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Dr Anne-Sophie Chauchat (CEA DAM Île-de-France, Université Paris-Saclay, CEA, Laboratoire Matière en Conditions Extrêmes)18/05/2026, 16:00MC7.T08: RF Power SourcesPoster Presentation
The 19 MeV electron linear accelerator ELSA at CEA DAM has been in operation for 30 years. A renovation of the RF system was necessary to improve the reliability of the system.
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The second part of the renovation concerns the 144 MHz RF amplifier supplying power to the photo-injector.
The former tetrode based amplifier has been replaced by a 1.6 MW Solid State Power Amplifier delivered by... -
Masao Kuriki (Hiroshima University)18/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
The six-imensional (6D) phase space distribution of beam is an extremely important indicator of beam performance and provides useful information for understanding the actual state of the accelerator. On the other hand, the beam diagnostics for the 6D phase space is generally difficult and only a projection on a 1D or 2D phase space is usually obtained. We developed an algorithm based on...
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Wencheng Fang (Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences)18/05/2026, 16:00MC8.U04: Isotope ProductionPoster Presentation
Ac-225 is a crucial isotope for targeted alpha therapy, yet its clinical application is severely constrained by supply shortages. The use of high-intensity proton beams to irradiate Ra-226 targets offers a viable approach to significantly enhance Ac-225 production, as it enables higher yields and greater scalability. However, the process is also accompanied by the generation of other isotopes...
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Pierre Korysko (University of Oxford)18/05/2026, 16:00MC1.A03: Linear Lepton CollidersPoster Presentation
Next generation electron–positron colliders such as the FCC, CLIC and the ILC require high beam stability and small beam sizes to reach their target luminosities. Meeting these demands requires highly refined Beam-Based Alignment (BBA) techniques, supported by both precise simulations and experimental validation.
In this paper, combined simulation and measurement studies using a newly...
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Alexander Herrod (Ion Beam Applications (Belgium))18/05/2026, 16:00MC7.T36: SustainabilityPoster Presentation
Particle accelerators typically use multiple times more electrical energy than the kinetic energy of the accelerated particles, resulting in low plug to beam efficiencies. The resources required for such machines are also substantial. Considering these points, we present a multifaceted approach with which we can calculate both the carbon emission impact for production and operation of particle...
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Mikhail Yakopov (European X-Ray Free-Electron Laser)18/05/2026, 16:00MC7.T15: Technology: Undulators and WigglersPoster Presentation
Precise magnetic-field measurements are essential for the characterization of both superconducting (SC) and permanent-magnet (PM) undulators. Since the accurate characterization of these devices relies directly on precisely calibrated Hall probes, a dedicated Hall-probe calibration setup for magnetic fields from -2T to +2T has been developed, produced, and commissioned at European XFEL,...
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Ms Eleni Marshall (Science and Technology Facilities Council)18/05/2026, 16:001MC7.T14: Vacuum TechnologyPoster Presentation
This paper explores a new technique for testing the RF resistivity of Non-Evaporable Getter (NEG) thin films. The technique can be applied to tubular samples, which are representative of the beamlines that would be coated within accelerators, and can also be used for pumping property measurements, so a full analysis of NEG coating properties can be made, and a NEG composition with best...
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Masao Kuriki (Hiroshima University)18/05/2026, 16:00MC8.U11: Outreach and CommunicationsPoster Presentation
ISBA25 (The 8th International School on Beam dynamics and Accelerator technology) was held from September 1 to 10 in Shanghai, China. This is the 8th school of the ISBA series, which is a international accelerator school for graduate students and young researchers who are new to the accelerator field. The school curriculum is composed of fundamental topics (e.g., RF theory), applications...
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Thakonwat Chanwattana (Synchrotron Light Research Institute)18/05/2026, 16:00MC6.T04: Accelerator/Storage Ring Control SystemsPoster Presentation
This paper presents the enhancement of photon beam position stability at the Siam Photon Source (SPS) through a real-time feedback control system based on a Sliding Mode Control (SMC) algorithm. The proposed system employs Photon Beam Position Monitor (pBPM) measurements within a global orbit feedback loop to minimize beam position fluctuations. The SMC-based Fault-Tolerant Control (FTC)...
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junjie ren (Institute of High Energy Physics)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The High Energy Photon Source(HEPS) is China's first and world-leading fourth-generation high performance synchrotron radiation light source. To meet beam commissioning requirements and better monitor the beam status of HEPS, a beam loss measurement(BLM) system based on scintillator detectors has been designed and installed. We conducted a quantitative analysis of beam loss data using neural...
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Abhishek Ganesh (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T09: Normal Conducting MagnetsPoster Presentation
A recent upgrade of the CERN Super Proton Synchrotron (SPS) quadrupole magnet measuring system enables high relative accuracy on the order of $10^{-5}$ over cycle sequences up to 800 seconds long, as needed for machine-learning based modeling and control of hysteresis effects in the frame of the Efficient Particle Accelerator (EPA) initiative. A new fluxmeter assembly integrates multiple...
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Ryan Yeung (Michigan State University)18/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
Performance drift has been a longstanding problem for accelerators. A desirable solution is to tune the machine slowly and gently to compensate for such drift. Previously, we presented a version of the Multi-Generation Gaussian Process Optimizer which tunes accelerator settings during operation to maintain optimal performance. In this paper, we present an improved version of the algorithm and...
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Rishvana Parveen (Applied Science Cluster UPES)18/05/2026, 16:00MC8.U08: Radiation EffectsPoster Presentation
YSZ and YSZ-MgO thin films were deposited on Si (100) substrates using RF sputtering and RF-DC co-sputtering techniques and studied under low-energy heavy-ion irradiation. Two sets of films were prepared: YSZ sputtered in argon environment and YSZ and Mg co-sputtered in argon and oxygen environment. Irradiation studies show enhanced crystallinity in single-component YSZ and significant...
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Yinan Wang (Rensselaer Polytechnic Institute), Mr Yue Zhao (Rensselaer Polytechnic Institute)18/05/2026, 16:001MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
Radio-frequency (RF) bunch-merging gymnastics is used in the RHIC heavy-ion program to combine individual source pulses into single bunches with suitable intensity. Preserving intensity and emittance during these gymnastics requires careful coordination of the voltages and phases of RF cavities at several harmonic numbers, which is labor-intensive and fragile against machine drift. Recent work...
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1603. Adaptive Reinforcement Learning Control for Long-Duration Stability of FEL Operation (MOP6601)Bowen Zhang (Shanghai Advanced Research Institute)18/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
During operation of free-electron laser (FEL) facilities, the beam trajectory is highly susceptible to parameter sensitivities, real-time drifts, and environmental disturbances, leading to significant degradation of beam quality. Conventional control methods rely on accurate system models and struggle to handle uncertainties, nonlinear couplings, and dynamic perturbations encountered in...
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Mr Artur Krawczyk (European Spallation Source)18/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
Since the last installation campaign, additional High-Beta (HB) cryomodules (CM) have been tested and qualified Ready-for-Installation (RFI) at the ESS Test Stand. Their installation was planned for the summer’25, right after the first Beam On Dump (BOD) commissioning phase and a complete warm-up of the accelerator. The number of HB CM has raised to 11 out of 21 allowing for a potential...
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Alexander Bainbridge (Science and Technology Facilities Council)18/05/2026, 16:00MC7.T34: Permanent MagnetsPoster Presentation
The Zero Power Tuneable Optics (ZEPTO) project at STFC Daresbury Laboratory has developed several prototype permanent magnet quadrupoles (PMQs) with the largest tuning range so far demonstrated for any PMQ. By moving permanent magnet blocks relative to fixed steel structures that define the flux path,gradient is adjusted whilst homogeneity remains defined by the steel shape. Maintaining stable...
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Daniele Sertore (Istituto Nazionale di Fisica Nucleare, Laboratori Acceleratori e Superconduttività Applicata)18/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
Plasma processing is increasingly recognized as an effective technique for mitigating field emission and restoring the performance of superconducting radiofrequency (SRF) cavities. A collaboration among CEA, ESS, and INFN is currently working to adapt and optimize this method for the medium- and high-beta elliptical cavities installed in the ESS linac.
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This contribution summarizes the... -
Mr Sankar Raj Rajendran (ISIS Neutron and Muon Source)18/05/2026, 16:00MC7.T35: Advanced Manufacturing Technologies for Accelerator ComponentsPoster Presentation
Additive manufacturing (AM) enables new design approaches for accelerator components by allowing internal features, such as conformal cooling channels, to be integrated directly into parts. At the ISIS Neutron and Muon Source, development began with a polycarbonate cooling jacket for an RF plasma chamber, later replaced with glass-filled nylon due to sealing limitations. The work was extended...
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Chuan Zhang (GSI Helmholtz Centre for Heavy Ion Research)18/05/2026, 16:00MC7.T35: Advanced Manufacturing Technologies for Accelerator ComponentsPoster Presentation
To reduce the footprint and construction costs of RF accelerators, there is a growing interest in operating at ultra‑high radio frequencies in the range of 0.3–3 GHz. At these frequencies, the longitudinal and transverse dimensions of accelerating structures shrink significantly, complicating the fabrication of intricate geometries and intensifying cooling challenges caused by high RF power...
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Thorsten Hellert (Lawrence Berkeley National Laboratory)18/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
Agentic artificial intelligence (AI) systems are emerging as a practical middle layer for intelligent, self-optimizing accelerator operations. Building on work at the Advanced Light Source, we have developed a modular agentic framework that integrates natural-language interfaces with control systems, archival data, simulation tools, and technical documentation, enabling context-aware reasoning...
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Charly Lassalle (Grand Accélérateur National d'Ions Lourds, Université de Caen Normandie)18/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
The SPIRAL2 superconducting LINAC at GANIL operates 26 quarter-wave resonator cavities whose online diagnostics currently rely on physics-based models limited to single operating points. This paper presents two complementary AI-based diagnostic tools: (i) neural-network heat-load virtual observers that estimate the cavity thermal dissipation — a proxy for the intrinsic quality factor Q0 — from...
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Eric Prebys (University of California, Davis)18/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
The 76-inch isochronous cyclotron at UC Davis is being modernized for digital control and data-driven optimization. A key challenge is stabilizing the extracted proton beam current, currently done by manually adjusting Trim Coil 10 (TC10) against magnetic drifts and source fluctuations.
This work develops a digital single-input single-output (SISO) controller that automates TC10 to regulate...
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Balsa Terzic (Old Dominion University)18/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
We propose to develop advanced ML models, such as physics informed neural network (PINN) based surrogate models, to accurately represent accelerator phase space transport. These surrogate models will enable precise diagnosis and prediction of beam phase space evolution along the beamline, facilitating real-time control and optimization. The developed models will be tested using the Upgraded...
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Dr Todd Satogata (Thomas Jefferson National Accelerator Facility)18/05/2026, 16:001MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
As part of the Nuclear Physics AI-Ready Accelerator Data (NARAD) project, Brookhaven National Laboratory is developing a demonstration use case based on the Booster-to-AGS (BtA) transfer line. We establish an AI-ready representation of the BtA lattice using the Particle Accelerator Language Standard (PALS), extended with semantic metadata linking lattice elements to control system signals and...
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Ricardo Parise (ALBA Synchrotron (Spain))18/05/2026, 16:00MC7.T14: Vacuum TechnologyPoster Presentation
ALBA is upgrading its storage ring into a 4th-generation diffraction-limited facility, which demands redesigned vacuum chambers. Most of the 268.8 m ring, divided into 16 arcs, will use OFHC-Cu or CuCrZr to dissipate synchrotron radiation and minimize resistive-wall impedance. To meet the injection-efficiency re-quirements, former 16 mm circular cross-section has been replaced by a rhombic...
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Dmitry Gudkov (Lawrence Berkeley National Laboratory)18/05/2026, 16:00MC7.T31: Subsystems, Technology and ComponentsPoster Presentation
The Advanced Light Source Upgrade (ALS-U) project faces strict schedule requirements demanding rigorous planning of manufacturing assembly activities well in advance of assembly and installation. Delays of module components, and changes to the module tunnel installation sequence may significantly impact the module assembly (Prestaging) schedule for all 48 Storage Ring (SR) modules and...
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Valentine PETIT (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T14: Vacuum TechnologyPoster Presentation
The electron-cloud-induced heat loads on the cryogenic system of the LHC at CERN, which exhibited unexpectedly high values over LHC’s Run 2 and 3, are recognized as a critical limitation to the achievable High-Luminosity LHC beam intensity. Amorphous carbon thin films, sputtered on the inner surface of the beam pipe and exhibiting a low Secondary Electron Yield, have proven to efficiently...
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Micha Dehler (Paul Scherrer Institute)18/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
For the 500 MHz cavities in the main storage ring of SLS 2.0, we plan to manufacture additional spares of the higher order mode (HOM) loads. We saw the current design using ferrite tiles as too risky for us to produce, so we did a redesign using silicon carbide (SiC) blocks, used already with good results for HOM damping in the SLS 2.0 stripline kickers. For good performance specially near...
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Tristan Calvet (European Organization for Nuclear Research)18/05/2026, 16:001MC7.T19: Technology: CollimationPoster Presentation
Following the detection of several edge-welded bellows (EWBs) leaks in the Large Hadron Collider (LHC) beam intercepting devices, an investigation campaign was initiated to better understand the fracture behaviour of EWBs subjected to lateral stroke loading. The campaign led to dedicated experimental fatigue tests performed on multiple EWB geometries, originating from different production...
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Nikita Kuklev (Fermi National Accelerator Laboratory)18/05/2026, 16:00MC6.T33: Online Modelling and Software ToolsPoster Presentation
As the design complexity of modern accelerators grows, there is more interest in using advanced simulations that have fast execution time or yield additional insights like gradients. The FAST/IOTA facility has been working on implementing and experimentally validating an end-to-end digital twin that is both fast and gradient-aware, allowing for rapid prototyping of new software and experiments...
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Yuxin Han (Shanghai Institute of Applied Physics)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationInvited poster
Shanghai High Repetition Rate XFEL and Extreme Light Facility (SHINE) is a continuous wave superconducting linear accelerator. It is the largest Chinese investment in scientific infrastructure ever. In order to achieve measurement of the electron beam position with a resolution of over 200 nm in the undulator, a new RF direct sampling electronics for the SHINE cavity BPM system was developed,...
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Haisheng Xu (Institute of High Energy Physics, Chinese Academy of Sciences)18/05/2026, 16:00MC6.T33: Online Modelling and Software ToolsPoster Presentation
The Plasma Wakefield Acceleration (PWFA) experimental platform consists of two beamlines. Beamline 1 (BL1) transports the electron-positron beams from the BEPCII linear accelerator to the experimental station, with a beam energy of 2 GeV. Beamline 2 (BL2) is a linear accelerator featuring an energy of 150 MeV and a bunch charge exceeding 5 nC. Currently, both beamline accelerators have entered...
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Weiwen Chen (Institute of High Energy Physics)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Two sets of Wall Current Monitors (WCMs) have been installed in the Rapid Cycling Synchrotron (RCS) of the China Spallation Neutron Source (CSNS) to fulfill three core beam diagnostic objectives: synchronous measurement of longitudinal bunch shapes across both macro and micro scales, accurate calculation of longitudinal emittance, and effective diagnosis of beam instabilities. This article...
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Yine Sun (Argonne National Laboratory)18/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
Effective knowledge management is essential to minimize downtime and maintain institutional memory in large-scale accelerator facilities. We present APS-RAG, a domain-aware Retrieval-Augmented Generation (RAG)* system currently deployed at the Advanced Photon Source (APS), designed to synthesize operational intelligence and facilitate semantic data retrieval from various dispersed databases....
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Thorsten Hellert (Lawrence Berkeley National Laboratory)18/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
Operational logbooks are essential for documenting accelerator performance, interventions, and operator experience, but their content is often inconsistent, unstructured, and difficult to search. This limits both human retrieval and the use of AI systems that rely on high-quality historical data. Project ARIEL (Agentic Retrieval Interface for Electronic Logbooks) introduces a modular,...
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Jan Uythoven (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A01: Hadron CollidersPoster Presentation
After every high-energy beam dump event at the Large Hadron Collider (LHC), the beam orbit before the dump, which is collected as part of the high-resolution post-mortem data, is analysed to identify any anomalous behaviour. This analysis is currently performed manually for both beams in both planes. Statistical methods based on post-mortem beam position monitor data from the years 2022-2024...
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Omar Hassan (TRIUMF)18/05/2026, 16:00MC6.T33: Online Modelling and Software ToolsPoster Presentation
Implementing automated tuning techniques has been a priority at TRIUMF, driven by the need to support the significant increase in RIB availability expected with the new Advanced Rare Isotope Laboratory (ARIEL). This efficiency boost will facilitate a broad spectrum of research in nuclear, particle, and astrophysics. This work outlines the shift from manual tuning to an automated approach for...
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Gianluca Martino (Lawrence Berkeley National Laboratory)18/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
We take a step beyond Operator-supervised optimization by introducing an agent that plans and executes fast, sample-efficient injector tuning constrained by competing goals (capture efficiency, energy spread, transmitted charge).
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We present an agent built on the Osprey agentic framework that can (i) author a machine-readable configuration for a configurable online optimizer, (ii) invoke that... -
Xing Yang (University of Science and Technology of China)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The Hefei Advanced Light Facility (HALF) is a fourth-generation, low-energy diffraction-limited synchrotron light source currently under construction. Its storage ring has an energy of 2.2 GeV, a circumference of 480 meters, and an emittance of 86 pm·rad. To ensure the smooth commissioning of HALF to meet its design specifications and to fully exploit the operational potential of this...
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Andrea Aguirre Polo (Deutsches Elektronen-Synchrotron DESY)18/05/2026, 16:00MC1.A02: Lepton Circular CollidersPoster Presentation
The next luminosity milestone at SuperKEKB requires improved emittance preservation of the injected beams, which remains a key limitation of the injector chain. Although emittance growth in the LINAC and beam-transport (BT) lines has been studied previously, the combined impact of collective effects, lattice imperfections, and other uncertainties is still not fully understood.
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A major... -
Evgenya Simakov (Los Alamos National Laboratory)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
We report on beam characterization studies of an 800-MeV proton beam using a 30-µm-thick single crystal diamond detector at Weapons Neutron Research facility at Los Alamos Neutron Science Center. Owing to its fast-timing response and high radiation tolerance, the detector enabled measurement of beam intensities spanning the full dynamic range from the outer halo to the high-density core....
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Lars Bozyk (GSI Helmholtz Centre for Heavy Ion Research)18/05/2026, 16:00MC7.T14: Vacuum TechnologyPoster Presentation
In oder to increase the maximum achievable intensity of medium charge state heavy ion beams in SIS18 at GSI for FAIR-operation, the installation of cryoinserts is foreseen. These cryogenic surfaces with high sticking probability provide high pumping speed, where most of the beam-loss induced gas desorption takes place. Such, gas particles get quickly removed, minimizing beam loss by charge...
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Yann Dutheil (European Organization for Nuclear Research)18/05/2026, 16:00MC1.T12: Colliders: Beam Injection/Extraction and TransportPoster Presentation
The FCC-ee collider complex relies on continuous top-up injection to maintain the high bunch charge and luminosity required to achieve its physics objectives. The injector complex will generate and accelerate electron and positron beams up to 20 GeV using linear accelerators, while a damping ring is foreseen to reach the emittance levels demanded by the high-energy booster.
This...
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Xiaobiao Huang (SLAC National Accelerator Laboratory)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Beam-based measurements of the thermal sensitivity of beam position monitor (BPM) electronics were performed in SPEAR a third-generation storage ring after more than twenty years of routine user operations. Controlled building-temperature excursions were applied to two equipment buildings containing key BPM front-end and digitiser racks. Using orbit- and charge-normalised BPM signals and...
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Lewis Kennedy (John Adams Institute for Accelerator Science, University of Oxford, European Organization for Nuclear Research)18/05/2026, 16:00MC1.A03: Linear Lepton CollidersPoster Presentation
Plasma-wakefield acceleration offers a promising path towards a next-generation collider, but poses significant beam-delivery challenges. We present initial designs for final-focusing systems capable of transporting beams from the plasma-based-collider concepts, ALiVE and HALHF, each with distinct beam dynamics constraints. For ALiVE, where the beams are intrinsically round, we demonstrate an...
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Kiel Hock (Brookhaven National Laboratory)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The EIC Hadron Storage Ring (HSR) reuses the RHIC yellow ring with substantial reconfiguration. A major challenge is mitigating beam-induced heating of cryogenic components caused by the shorter hadron bunches and an average beam current three times that of RHIC. In addition, large transverse beam offsets at injection due to helical magnet itself generate asymmetric resistive-wall losses in...
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Kate Taylor (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A25: Beyond CollidersPoster Presentation
The TWOCRYST experiment at CERN is a proof-of-principle setup designed to demonstrate the feasibility of the future ALADDIN experiment, part of the Physics Beyond Colliders programme. The setup comprises two bent crystals installed in the LHC beamline at Insertion Region 3 (IR3). The first crystal (TCCS) extracts particles from the beam and directs them onto the second crystal (TCCP). This...
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Pierluigi Fedeli (University of Ferrara)18/05/2026, 16:00MC7.T35: Advanced Manufacturing Technologies for Accelerator ComponentsPoster Presentation
Bent crystals, through the phenomenon of channeling, provide compact and passive deflection elements capable of delivering angular kicks equivalent to those of hundreds-tesla magnetic dipoles on selected portions of a beam. They are therefore attractive for a wide range of beam-manipulation tasks in circular proton and ion accelerators, including ion collimation as foreseen for HL-LHC, halo...
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Benno List (Deutsches Elektronen-Synchrotron DESY)18/05/2026, 16:00MC7.T38: Mechanical designPoster Presentation
The PETRA IV project at DESY in Hamburg aims for a new, 4th generation light source with first light in 2032. It comprises the installation of a completely new, 2.3km long 6GeV electron storage ring and a new injection chain, installation and refurbishment of 31 photon beam lines with 60 end stations, and the construction and refurbishment of 49 buildings including a new 600m long underground...
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Marc Petryk (GSI Helmholtz Centre for Heavy Ion Research)18/05/2026, 16:00MC7.T31: Subsystems, Technology and ComponentsPoster Presentation
The "Facility for Antiproton and Ion Research" (FAIR) is a new international accelerator complex, which is currently built in Darmstadt, Germany. Part of this complex is the SIS100 heavy ion synchrotron with a circumference of ~1086 m. One of the required extraction systems is the electrostatic septum. This septum was built by Danfysik. It is operating with voltages up to 180 kV. The...
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Michele Loffredo (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A04: Colliders: Circular Accelerators and Storage RingsPoster Presentation
The Long Shutdown 3 (LS3) of the Large Hadron Collider (LHC) represents a pivotal phase in the lifecycle of CERN’s accelerator complex. The unprecedented complexity of LS3 arises from the challenge of integrating the High-Luminosity LHC (HL-LHC) upgrade, together with multiple key projects, extensive maintenance and consolidation activities, into a single coherent schedule with a fixed...
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Zhicheng Huang (University of Science and Technology of China)18/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
The ASTERIX project, hosted by the INFN–LNF, seeks to achieve the first demonstration of a practical, meter-scale X-band RF accelerating structure suitable for operational linear accelerators (>100 MV/m accelerating gradient). The goal is to produce innovative RF structures to qualify as part of the world-wide scientific collaboration (SLAC/CERN/INFN-LNF/KEK/Tsinghua) for R&D in the...
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Yongtao Liu (Xihua University)18/05/2026, 16:00MC8.A28: Applications: Industrial AcceleratorsPoster Presentation
A compact X-band 2 MeV electron linear accelerator (linac) has been developed for on-site inspection applications, addressing the limitation of hundreds-kV X-ray sources in fully penetrating dense objects during field operations. The linac system comprises three modular units, each weighing less than 65 kg, enabling manual transport by operators without specialized equipment. This paper...
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Thomas Banks (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T20: Technology: Targetry and DumpsPoster Presentation
At CERN’s Future Circular Collider (FCC-ee), the beamstrahlung photon beams produced at each interaction point carry several hundred kilowatts of power, requiring a reliable and thermally efficient absorber. Building upon an initial slope-based liquid-lead concept, this work investigates two improved configurations: 1) a double-slope geometry, designed to mitigate photon backscattering...
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Ming-Chyuan Lin (National Synchrotron Radiation Research Center)18/05/2026, 16:00MC6.T27: Instrumentation: Low Level RFPoster Presentation
This paper presents a self-developed, comprehensive electronic control system for the Superconducting Radio-Frequency passive Harmonic Cavity (SRF HC) at the Taiwan Photon Source (TPS) in Hsinchu, Taiwan. The system integrates the Break Out Box (BOB) interfaces for the cavity, Valve Box (VB), cooling water signals, and interlock systems. Additionally, it includes an intuitive correction module...
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Thomas Banks (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T20: Technology: Targetry and DumpsPoster Presentation
Liquid lead is under investigation at CERN as a candidate material for a multi MW-Class production target for a future Muon Collider. A free-surface curtain was initially proposed to decouple structural walls from beam-driven shock waves resulting from the high instantaneous energy deposition on the target material. However, later studies revealed that the large vertical extent required for...
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Anton Malygin (Karlsruhe Institute of Technology)18/05/2026, 16:00MC7.T08: RF Power SourcesPoster Presentation
Exploration of accelerator technologies in the millimeter-wave regime offers a promising route to achieve extremely high accelerating gradients. Owing to the high shunt impedance and short filling times of mm-wave accelerating structures relative to conventional S- and C-band systems, GV/m-level accelerating gradients become attainable. Mm-wave accelerator concepts are therefore of strong...
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Yong Jiang (Particle Accelerator Research Foundation, Omega-P R&D, Inc.)18/05/2026, 16:00MC8.U03: Transmutation and Energy ProductionPoster Presentation
A novel compact neutron source driven by deuteron Cyclotron Auto-Resonance Accelerator (dCARA) is under development to produce neutrons via breakup of high current 40-MeV deuterons on a low-Z target. Compared to the proton-based Accelerator-Driven Systems (ADS), a dCARA system can be much more compact and cost effective, with notable features including continuous acceleration without...
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Vittorio Ferrentino (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T09: Normal Conducting MagnetsPoster Presentation
SHiP (Search for Hidden Particles) at CERN is a new experiment which aims to explore physics beyond the Standard Model by searching for long-lived, feebly interacting particles, as theoretically predicted by a large number of models.
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It will employ a dedicated Muon Shield (MS) to suppress the muon flux generated in proton–target interactions. The first magnet in the MS complex is the... -
Henrique de Oliveira Caiafa Duarte (MAX IV Laboratory)18/05/2026, 16:00MC7.T09: Normal Conducting MagnetsPoster Presentation
The MAX 4U project aims to reduce the natural horizontal emittance of the MAX IV 3 GeV storage ring from 328 pm rad to less than 75 pm rad. A key constraint for the new lattice design is the preservation of the 7-bend achromat structure layout. Each cell is implemented as a single magnet block, which includes an integrated dipole, removable quadrupole pole tips, and stand-alone sextupoles and...
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Alexander Ody (Argonne National Laboratory)18/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
The Argonne Wakefield Accelerator (AWA) test facility has recently upgraded its inhouse centralized control system to a modularized system using the EPICS control ecosystem, in a move to align with other large facilities and facilitate external collaboration to explore the implementation of machine learning techniques to beamline control and optimization. In particular, we aim to develop and...
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Ignacio Sampedro (IFMIF-DONES Spain Consortium)18/05/2026, 16:00MC7.T36: SustainabilityPoster Presentation
The International Fusion Materials Irradiation Facility-DONES (IFMIF-DONES) is a scientific infrastructure intended to test and qualify materials for fusion reactors by exposing them to intense neutron fluxes. Several auxiliary systems will ensure its continuous operation, among which the Heat Rejection System (HRS) is designed to remove and discharge to the environment the heat mainly...
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Andrea Vella (University of Malta)18/05/2026, 16:00MC1.T19: Colliders: CollimationPoster Presentation
The Large Hadron Collider (LHC) requires a collimation system to ensure safe operation with both proton and heavy-ion beams. As of 2023, a crystal collimation scheme using bent silicon crystals was introduced to improve the collimation efficiency for heavy-ion beams. However, drifts in the crystal angular position led to the loss of cleaning performance during physics fills. These drifts are...
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Alexey Gunya (GSI Helmholtz Centre for Heavy Ion Research)18/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
The HElmholtz LInear ACcelerator (HELIAC) at GSI is a superconducting continuous-wave (cw) LINAC, designed to deliver heavy-ion beams to user experiments at GSI. Building on the successful integration, commissioning and operation of the first cryomodule CM1 utilizing cavities CH0, CH1, and CH2, current efforts emphasize on fabrication and testing of the next series: CH3 - CH8.
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Cavities... -
André Donadon Servelle (European Organization for Nuclear Research)18/05/2026, 16:00MC1.T19: Colliders: CollimationPoster Presentation
The Xsuite framework offers a modern environment for high-performance accelerator physics simulations. Its Xcoll module handles particle-collimator interactions using dedicated scattering routines, both built-in and external. FLUKA, a well-established Monte Carlo code, can be coupled to Xcoll, enabling detailed modelling of particle-matter interactions and support for complex geometries. This...
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Jens Voelker (Helmholtz-Zentrum Berlin für Materialien und Energie)18/05/2026, 16:00MC7.T34: Permanent MagnetsPoster Presentation
HZB is developing BESSYIII, a future 4th-generation low-emittance diffraction-limited soft-to-tender X-ray synchrotron light source, as a green-field facility in 2035 on the premises of the Adlershof technological campus in Berlin, Germany. We are in the design phase of magnet concepts for all permanent-magnet (PM-)based linear and resistive multipole magnets, fulfilling the requirements of...
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Disha Yadav (University of Petroleum and Energy Studies)18/05/2026, 16:00MC8.U02: Materials Analysis and ModificationPoster Presentation
Accelerator-enabled ion irradiation is a versatile technique for tailoring the structural and electrical properties of materials. By enabling precise defect creation over targeted regions, ion beams provide an effective way for advancing oxide-based electronic devices. This capability is crucial for emerging memory technologies like Resistive Random Access Memory (RRAM), where defect...
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Mr Richard Kan (Paul Scherrer Institute)18/05/2026, 16:00MC7.T21: InfrastructuresPoster Presentation
Cooling circuits running with distilled water to cool copper structures like magnets or cooling plates are vul-nerable to air leaking in. The leaked-in air contains car-bon dioxide that lowers the pH from 7 to acidic condi-tions in distilled water and enables dissolved oxygen to react with the surface of the copper tubing, forming cop-per oxides that can grow and mechanically be displaced to...
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Marion Vanwelde (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A09: Muon Accelerators, Neutrino Factories, Muon CollidersPoster Presentation
A 10 TeV center-of-mass muon collider is a high-energy lepton collider that has the potential to achieve physics reach comparable to significantly larger hadron colliders. The final luminosity depends on the performance of the entire complex, from muon beam production to the collider ring, including the rapid cooling and acceleration stages. Achieving the target luminosity imposes stringent...
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Zexin Cao (University of Science and Technology of China)18/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
To meet the requirement for high-peak-power S-band microwave pulses at the beam test platform of the National Synchrotron Radiation Laboratory (NSRL), a compact Sband spherical pulse compressor has been designed and fabricated. The compressor employs a dual-polarization mode coupler to excite two orthogonal operating modes in a single spherical resonant cavity, enabling dual-mode energy...
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Tristan Calvet (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T20: Technology: Targetry and DumpsPoster Presentation
New beam dumps have been developed for the Isotope mass Separator On-Line facility (ISOLDE) at CERN, as part of the ISOLDE Beam Dump Replacement and Sustainability (IBDRS) project. The new design is engineered to ensure an operational lifetime of 30 years and, as by-product, to accommodate the planned doubling of beam power. The absorber assembly consists of water-cooled slices of cladded...
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Mr Sankar Raj Rajendran (ISIS Neutron and Muon Source)18/05/2026, 16:00MC7.T38: Mechanical designPoster Presentation
The ISIS Neutron and Muon Source has developed a new RF-driven H⁻ ion source to replace the caesiated Penning source in use since the 1980s. The new source operates without caesium and has achieved extracted beam currents of up to 18 mA. To increase the beam current further toward operational requirements, a passive caesium delivery system using Cs₂CrO₄ dispensers has been designed and...
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Chunyi Wu (National Synchrotron Radiation Research Center)18/05/2026, 16:00MC6.T04: Accelerator/Storage Ring Control SystemsPoster Presentation
The In-Vacuum Tapered Undulator (IUT24) was developed for the Phase-III beamline project at the Taiwan Photon Source (TPS). To counteract strong, non-linear magnetic attraction forces while maintaining precise synchronization between magnet arrays, a robust motion control architecture was implemented. This system integrates an EPICS-based supervisory layer with EtherCAT field I/O and BiSS-C...
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Thibaut Parmentier (European Organization for Nuclear Research)18/05/2026, 16:00MC1.T19: Colliders: CollimationPoster Presentation
CERN’s Transfer Tunnel 20 (TT20) connects the Super Proton Synchrotron (SPS) to three primary targets in the North Area which provide secondary particles to experiments further downstream. Two splitter collimators (TCSC) are installed along this line, each protecting their respective downstream Lambertson septum magnets, which distribute the slow-extracted 400 GeV/c proton beams among the...
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Francesco Grespan (Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro)18/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
The IFMIF-DONES facility will irradiate and characterize materials to be used in fusion reactors using a neutron flux produced by the interaction of a deuteron beam with a liquid lithium target. A superconducting RF linac will accelerate the beam to the final energy of 40 MeV through two series of superconducting half-wave resonators operating at 175 MHz. The study of a new design for the...
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Sladana Dordevic (Paul Scherrer Institute)18/05/2026, 16:00MC7.T16: Pulsed Technology (magnet and power supplies)Poster Presentation
In the SLS2.0 upgrade project at the Paul Scherrer Institute (PSI) the injector complex remained mostly unchanged, but we had to design three new storage ring injection elements: the thick septum, the thin septum and beam dump system. Because of the limited dynamic aperture of the upgraded machine, 1 mm septum wall thickness was necessary. To limit stored beam disturbance to 10% of the beam...
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Adnan Kurtulus (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
The design of the CLIC main beam injector linacs requires high-gradient, traveling-wave accelerating structures capable of handling substantial beam-loading effects due to high beam currents. In this work, we present a comprehensive design and optimization study of 2 GHz traveling-wave structures for the electron and positron linacs, which accelerate beams up to 2.8 GeV with a nominal bunch...
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Mr Ashish Sharma (Indian Institute of Technology Delhi)18/05/2026, 16:00MC6.T27: Instrumentation: Low Level RFPoster Presentation
The design of low-level feedback (LLRF) controllers used to stabilize the amplitude and phase of the field inside the RF cavities is typically customized, depending on the frequency and mode of operation. IUAC, New Delhi, India, operates accelerators with RF structures in the range of 12.125-97 MHz, in both normal and superconducting modes. Currently, all the LLRF controllers that have been...
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Joshua Gray (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A01: Hadron CollidersPoster Presentation
The High-Luminosity LHC (HL-LHC) upgrade imposes stringent requirements on optics design and correction to achieve its performance goals while maintaining beam stability, sufficient aperture margins, and controlled sensitivity to alignment and field imperfections. Among the explored configurations, flat optics—featuring asymmetric $\beta$-functions at the interaction points—has been proposed...
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Yelong Wei (University of Science and Technology of China)18/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
A phase shifter is a key component to tune the phase of RF power for accelerating or deflecting structures in linear accelerators (linacs). This paper presents the design of a compact C-band variable phase shifter for our high-power test platform. It consists of a dual-polarization mode coupler and a movable short-circuited piston for adjusting RF phases. In order to isolate the coaxial port...
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Muhammad Abdul Rehman (Institute of High Energy Physics)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Following the successful profile measurement of an 80 MeV negative hydrogen (H⁻) beam using a laser wire monitor at the China Spallation Neutron Source(CSNS), an emittance measurement system with a Low-Gain Avalanche Diode (LGAD) sensor has been developed and is currently under commissioning this year. This system utilizes the LGAD to reconstruct the spatial distribution of neutral hydrogen...
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Aditya Singh Thakur (European Organization for Nuclear Research)18/05/2026, 16:001MC7.T08: RF Power SourcesPoster Presentation
The RF gridded gun is a key component of the RF power sources chosen for the FCC-ee tristron. It enables the generation of bunched electron beams via the application of an RF voltage across the cathode-grid gap. The tristron allows a compact tube architecture and provides high RF power production efficiency. The emitted, grid intercepted, and transmitted beam currents are governed by the...
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Matilda Mwaniki (Illinois Institute of Technology)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The Integrable Optics Test Accelerator (IOTA) at Fermilab is transitioning from an electron beam facility to a proton beam facility for studies in nonlinear accelerator optics and space-charge dominated proton beams. This project involves the commissioning and fabrication of Ionization Profile Monitors (IPMs) to enable beam profile measurements at IOTA. In general, IPMs work on principle of...
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Ilias Efthymiopoulos (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A09: Muon Accelerators, Neutrino Factories, Muon CollidersPoster Presentation
Measurements of neutrino oscillations in low-energy regimes will require precise knowledge of neutrino-nucleus interaction cross sections for low-energy neutrinos. The ESSnuSB+ project aims to fill the gap in the interaction cross section data by creating a well-quantified neutrino beam from the circulation of stored muons in a low-energy racetrack decay ring, LEnuSTORM. To produce the...
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Xing Yang (University of Science and Technology of China)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
This paper presents a high-speed, high-precision sys-tem for measuring average beam current and lifetime, addressing the low data refresh rates of existing systems that fail to capture rapid beam dynamics. A comprehen-sive performance analysis identifies key error sources, including the beam probe, data acquisition card, elec-tromagnetic interference, and quantization noise. Exper-imental...
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Aashoo Sharma (MAX IV Laboratory)18/05/2026, 16:00MC7.T34: Permanent MagnetsPoster Presentation
As part of the RF2.0 project*, a permanent-magnet (PM) gradient dipole has been designed at MAX IV Laboratory to replicate the performance of a conventional electromagnet gradient dipole in Unit Cell-1 of the MAX IV 3.0 GeV storage ring. The new PM gradient dipole follows a modular design and utilizes NdFeB permanent-magnet blocks. The main advantage of this design is an expected reduction of...
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Alexander Ody (Argonne National Laboratory)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Phase-Diversity Electro-Optic Sampling (DEOS) is an attractive non-destructive diagnostic for measuring the longitudinal current profile of relativistic electron bunches. It is particularly suited for characterizing a wide range of temporal durations. This method supports acquisition windows exceeding 10 ps for long bunches while preserving sensitivity to sub-picosecond structures. We are...
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Nahikari Gonzalez (ALBA Synchrotron (Spain))18/05/2026, 16:00MC7.T38: Mechanical designPoster Presentation
The ALBA Synchrotron upgrade into the diffraction-limited ALBA II storage ring is currently in progress and scheduled for completion before the decade’s end. Delivering a twenty-fold reduction in emittance implies a new multibend-achromat lattice with more than twice the current number of magnets. Although the existing tunnel and infrastructure will be reused, a new girder system is required...
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Frédérick FOREST (SIGMAPHI)18/05/2026, 16:00MC7.T10: Superconducting MagnetsPoster Presentation
The P2 experiment aims for a high precision measurement of the parity violating asymmetry in the elastic scattering of polarized electrons off unpolarized nuclei. The expected data will be interpreted as a determination of the weak mixing angle, one of the fundamental parameters of the Standard Model, with a precision competitive with measurements at LEP or LHC. The experiment includes a large...
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Frédérick FOREST (SIGMAPHI), Raphael PASQUET (SIGMAPHI)18/05/2026, 16:00MC7.T10: Superconducting MagnetsPoster Presentation
The upgrade of the Swiss SLS towards the SLS 2.0 ring belongs to the worldwide major upgrade/new construction programs to increase the ring performance by approximately two orders of magnitude. At two locations along the ring, the 1.35 T permanent bending magnets will be replaced by superconducting bending magnets (named SUPERBEND)) with a peak field up to 5 T. The two SUPERBEND magnets were...
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Frédérick FOREST (SIGMAPHI)18/05/2026, 16:00MC7.T16: Pulsed Technology (magnet and power supplies)Poster Presentation
Advanced Light Source Upgrade project (ALS-U) is an upgrade project to the LBNL Advanced Light Source (ALS). The ALS is a 1.9 GeV storage ring operating at 500 mA of beam current. It is optimized to produce intense beams of soft x-rays, which offer spectroscopic contrast, nanometer-scale resolution, and broad temporal sensitivity. A new pulsed septum magnet system is required to build a...
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Frédérick FOREST (SIGMAPHI)18/05/2026, 16:00MC7.T10: Superconducting MagnetsPoster Presentation
The C400 IONS developed by Normandy Hadron Therapy and IBA is an isochronous superconducting cyclotron for cancer therapy which can deliver high intensity of alphas to carbons at 400 Mev/amu and protons at 260 MeV. A set of 4 large superconducting coils embedded in a single cryostat for a total weight of 30 tons and outer diameter 4.7 meters is combined with a magnetic steel yoke of 750 tons...
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Edward Barnes (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A01: Hadron CollidersPoster Presentation
For the High-Luminosity LHC (HL-LHC), the Vacuum Assembly for eXperiments (VAX) of the ATLAS and CMS experiments required a major redesign to improve accessibility and reduce personnel exposure to radiation during its exploitation and maintenance. In the current LHC configuration, the VAX is located at a closed end of the tunnel, where the risk of oxygen-deficiency is also present. To address...
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Niels Bidault (University of Hawaiʻi at Mānoa)18/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
The University of Hawai‘I at Mānoa (UHM) linac delivers up to 45 MeV electron beams to a Free-Electron Laser(FEL) oscillator.
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As the linac is being recommissioned for renewed FEL operation, we are developing simulation and optimization tools to recover operational settings and to explore the landscape of beam-manipulation techniques for future experimental apparatus.
This paper benchmarks... -
Francis Perez (ALBA Synchrotron (Spain))18/05/2026, 16:00MC7.T16: Pulsed Technology (magnet and power supplies)Poster Presentation
The Double Dipole Kicker (DDK) topology has been designed to perform off-axis injection into the ALBA II storage ring, currently under design. The DDK creates a multipole magnetic field by summing two opposite dipo-lar fields generated by four inner and four outer conduc-tor rods. The two dipolar fields are powered by two inde-pendent pulsed power supplies that deliver identical pulses of up...
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Chunguang Jing (Euclid Techlabs (United States))18/05/2026, 16:00MC8.A28: Applications: Industrial AcceleratorsPoster Presentation
Compact SRF industrial linacs can deliver beam powers exceeding 500 kW within the 10 MeV regulatory limit that is difficult to achieve with normal-conducting linacs in a constrained footprint. Although SRF technology was historically too costly and complex for widespread industrial deployment, the advent of conduction cooling has enabled compact, stand-alone SRF systems suitable for both...
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Riku Nomaru (The University of Tokyo, High Energy Accelerator Research Organization)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationInvited poster
SuperKEKB is an electron–positron collider that aims to exceed its own world-record instantaneous luminosity by an order of magnitude. During high-current collision operation, various beam instabilities—such as sudden beam loss, electron-cloud effects, and fast-ion instability—can limit beam performance and stable machine operation. To better understand these phenomena, fast diagnostic systems...
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liang xu (Institute of High Energy Physics, Chinese Academy of Sciences)18/05/2026, 16:00MC6.T05: Beam Feedback SystemsPoster Presentation
This paper introduces the development and preliminary testing of a digital bunch-by-bunch feedback system designed to suppress beam oscillations. Coupled-bunch instabilities, which arise under high-current and multi-bunch operation modes, can induce beam oscillations that significantly degrade collision luminosity and reduce beam lifetime. These instabilities necessitate active feedback...
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Jialan Pan (Shanghai Institute of Applied Physics)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Real-time bunch-by-bunch monitoring of transverse position and longitudinal phase has become increasingly important for the stable operation of storage ring light sources and for accelerator physics studies. This paper presents a real-time three-dimensional bunch-by-bunch position measurement system based on machine learning. The system eliminates the need for sampling delay adjustment and...
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Christoph Julien Wegmann (Technical University of Darmstadt)18/05/2026, 16:00MC7.T31: Subsystems, Technology and ComponentsPoster Presentation
The SIS100 heavy-ion synchrotron under construction at GSI/FAIR will contain a total of 4 broadband cavities for barrier bucket and longitudinal feedback operation. These need to generate non-harmonic gap voltages with relevant spectral components in a range from 100 kHz to 15 MHz. Previous analyses showed that the input capacitance of the tetrode amplifier limits the cavity’s upper cutoff...
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Rui Simpson (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T21: InfrastructuresPoster Presentation
Electrical safety has been identified as one of the main risks in large research infrastructures. At CERN, new regulations for electrical safety are being reviewed to align with current best practices and harmonise the approach. Among other aspects, it covers the compliance of electrical equipment and installations before they are put into operation, to further reduce the risk of accidents, to...
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Rémi Martinie (Paul Scherrer Institute)18/05/2026, 16:00MC7.T20: Technology: Targetry and DumpsPoster Presentation
The Targeted Alpha Tumor Therapy and Other Oncological Solutions (TATTOOS) facility at the Paul Scherrer Institute (PSI) will address the growing demand for medically relevant radionuclides using proton-induced spallation at the PSI High Intensity Proton Accelerator (HIPA). The target is designed to operate with a 100 microA - 590 MeV proton beam at up to 2400 °C for 2–5 weeks. To study...
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Iago Carvalho de Almeida (Brazilian Center for Research in Energy and Materials)18/05/2026, 16:00MC6.T27: Instrumentation: Low Level RFPoster Presentation
The SIRIUS storage ring RF system currently operates with two 500 MHz superconducting cavities, each powered by a 130 kW RF plant composed of two solid-state amplifiers (SSA) and a 200 mA beam current. A passive 2-cell superconducting 3rd-harmonic cavity (3HC) is planned for installation in 2027 to increase beam lifetime through bunch lengthening and allow the beam current to be increased to...
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Yong Liu (High Energy Accelerator Research Organization)18/05/2026, 16:00MC6.T05: Beam Feedback SystemsPoster Presentation
In the J-PARC LINAC, the beam monitor and LLRF systems operate with independent RF references. The LLRF system at 312 MHz and 960 MHz incorporates active environmental compensation to enhance stability. However, the 324-MHz beam-monitor RF reference lacks such functionality, resulting in humidity-dependent phase drift. To improve environmental long-term stability, we have developed a...
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SangChul Mun (Korea Institute of Radiological and Medical Sciences)18/05/2026, 16:00MC8.U02: Materials Analysis and ModificationPoster Presentation
Particle Induced X-ray Emission (PIXE) is a non-destructive analytical technique widely used for the precise identification of elemental compositions in materials. This project aims to develop a PIXE system utilizing the MC50 cyclotron beamline, designed to enhance analytical precision and versatility across a broad range of applications. The current infrastructure includes proton and neutron...
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Wei-Yu Lin (National Synchrotron Radiation Research Center)18/05/2026, 16:00MC6.T22: Reliability, OperabilityPoster Presentation
A real-time waveform monitoring system has been developed for the pulsed
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power supplies in the injection chain of the Taiwan Photon Source (TPS).
The system covers eight kicker and septum magnets spanning the Booster
Ring and Storage Ring injection path. Two operational incidents involving
SR Injection Septum~1 motivated its development: in both cases, waveform
anomalies that were... -
Xing Yang (University of Science and Technology of China)18/05/2026, 16:001MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Beam diagnostic systems are crucial for the Hefei Ad-vanced Light Facility (HALF), a fourth-generation light source under construction. However, the testing of its key devices—such as Digital Beam Position Monitors (DBPMs), the Fast Orbit Feedback (FOFB) system, and Bunch-by-Bunch (BbB) processors—is limited by the lack of a laboratory signal generator capable of simulat-ing accelerator...
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Dr Seyoung Oh (Korea Institute of Radiological and Medical Sciences)18/05/2026, 16:00MC8.U02: Materials Analysis and ModificationPoster Presentation
The integration of real-time mechanical testing with non-destructive elemental analysis under radiation exposure represents a major advancement in characterizing materials in extreme environments. This work focuses on developing an integrated universal testing machine (UTM) and particle-induced X-ray emission (PIXE) system using the MC50 cyclotron beamline, enabling simultaneous evaluation of...
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Chunyi Wu (National Synchrotron Radiation Research Center)18/05/2026, 16:00MC6.T27: Instrumentation: Low Level RFPoster Presentation
The Linac of Taiwan Light Source (TLS) has operated for over thirty years, necessitating modernization to ensure sustainability operation. A new digital low-level RF (DLLRF) control system has been developed to replace aging components and address the situation of having only a single backup unit. The MTCA.4 platform was adopted for its scalability and high-performance throughput. The system...
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Zhiyuan Zhang (Institute of Advanced Light Source Facilities, Shenzhen)18/05/2026, 16:00MC6.T26: Instrumentation: Photon Beam Lines and ComponentsPoster Presentation
This report presents the development and validation of a high-speed data acquisition system for Gas Monitor Detectors at the Shenzhen Superconducting Soft X-ray Free-Electron Laser (S3FEL). The system is designed to support real-time, pulse-by-pulse monitoring of photon intensity and beam position across six beamlines operating at up to 1 MHz repetition rate. Based on the MTCA.4 platform, the...
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Renjun Yang (Institute of High Energy Physics)18/05/2026, 16:001MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The analog electronics for the Beam Loss Monitoring (BLM) system in the superconducting section of CSNS II is mainly used for signal conditioning of the output signals from BLM beam loss detectors. For the BLM electronics of CSNS I, a single-channel transimpedance circuit was designed. The overall response time of the detector, transmission cable, and electronics is approximately 150 μs, with...
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Naoko Iida (High Energy Accelerator Research Organization)18/05/2026, 16:00MC6.T05: Beam Feedback SystemsPoster Presentation
In SuperKEKB, the emittance of the injected beam is an essential parameter that significantly affects the injection rate. In the linac, the beam tail can be kicked depending on the orbit through the accelerating structures, which leads to a degradation of the emittance. Fortunately, these effects can be minimized by appropriately optimizing the beam trajectory. On the other hand, the KEKB...
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eunsang kwon (Institute for Basic Science)18/05/2026, 16:00MC6.T04: Accelerator/Storage Ring Control SystemsPoster Presentation
The Beam Permit System (BPS) has been implemented as a software-level permit and verification layer for the Rare isotope Accelerator complex for ON-line experiments (RAON), a heavy-ion accelerator being commissioned at the Institute for Basic Science (IBS) in Korea. While the Machine Protection System (MPS) provides fast hardware signal-based protection against beam-induced equipment damage,...
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Gaël Le Bec (European Synchrotron Radiation Facility)18/05/2026, 16:00MC7.T15: Technology: Undulators and WigglersPoster Presentation
The Insertion Devices and Magnets group at the ESRF is developing new methods and software tools for optimizing undulator assemblies. Measurements of the individual magnet blocks are used to build a model of the undulator, which is updated during assembly and employed for field optimisation and shimming. This software – written in Python and interfaced with magnetic measurement benches – is...
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1344. Diagnosing ghost bunches with the upstream extinction monitor in the Mu2e experiment (MOP6370)Ryan Hensley (University of California, Davis)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The Mu2e experiment has a stringent requirement for extinction of the pulsed proton beam, referring to the elimination of particles between proton bunches to a relative level of $10^{-10}$, which means a single out-of-time particle in the inter-pulse gaps for every 250 complete proton pulses. As the construction of the Mu2e experiment nears completion, it is crucially important to make an...
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MyungHoon Cho (Pohang Accelerator Laboratory)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Diagnosing the longitudinal phase space of electron beams is crucial for characterizing and optimizing FEL performance in X-ray Free Electron Laser (XFEL). Because of GeV level energy and tens of femtosecond duration, diagnosing methods are limited, and the X-band Transverse Deflection Cavity (XTCAV) became a conventional equipment, which employs short RF waves (X-band) to transversely deflect...
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Axel Perez Ruiz (Université Paris-Saclay, CNRS/IN2P3, IJCLab, Accelerators & Cryogenic Systems)18/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
PERLE, under construction at IJCLab, is a multi-turn Energy Recovery Linac designed for high intensity electron beams of 10 MW peak power (20 mA, 250 MeV). Simulations of its SRF cryomodule * predict more than 100 W of higher-order-mode (HOM) power per cavity induced by the short bunches, indicating that Beam Line Absorbers (BLAs) at 40 K may be required between cavities to dissipate the HOM...
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Kiel Hock (Brookhaven National Laboratory)18/05/2026, 16:001MC6.T33: Online Modelling and Software ToolsPoster Presentation
The NASA Space Radiation Laboratory (NSRL) at Brookhaven National Laboratory simulates the galactic cosmic ray space radiation environment by delivering high energy heavy ions and protons to the NSRL Target Room for radiobiology studies and microelectronics testing. The AGS Booster synchrotron delivers beams to the NSRL beamline via resonant slow extraction. NSRL tuning is difficult due to the...
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Fang Li (University of Science and Technology of China)18/05/2026, 16:00MC6.T04: Accelerator/Storage Ring Control SystemsPoster Presentation
The fourth-generation synchrotron radiation source, with its ultra-high brightness and nanometer-level spatial resolution, has become a core facility supporting cutting-edge scientific research. The Hefei Advanced Light Source comprises over 2,000 magnet power supplies, requiring remote online adjustment and synchronized current settings to meet the physical requirements of the electron beam....
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Dora Gibellieri (European Organization for Nuclear Research, Université de Caen Normandie)18/05/2026, 16:001MC1.A02: Lepton Circular CollidersPoster Presentation
Operating at 45.6 GeV with high beam current, low emittances, and long damping times, the FCC-ee low-energy collider configuration is particularly sensitive to collective effects and impedance-induced beam instabilities. Controlling these effects requires a continuously refined impedance model to guide design choices and to establish reliable instability thresholds. Recent studies identify the...
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ShengBin Ye (ShanghaiTech University)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The slice energy spread is a critical parameter in free-electron laser (FEL) facilities. A high-brightness injector is typically characterized by a low slice energy spread, which can induce micro-bunching instability and consequently degrade the FEL lasing process. Conventional mitigation involves controlling the slice energy spread using a laser heater, making its precise measurement...
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Lucien Porta (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T31: Subsystems, Technology and ComponentsPoster Presentation
The layout of the FCC-ee collider requires the separa-
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tion of the electron and positron beams, which are circu-
lating in opposite directions, on either side of the RF sys-
tem. Only one of the two beams must be deflected, while
the other one (the beam circulating in the direction of the
RF) shall remain untouched to avoid synchrotron radiation
being emitted toward the RF section. This... -
Patrick Krkotic (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T14: Vacuum TechnologyPoster Presentation
Beam-induced heating has become increasingly relevant for vacuum interconnect modules with the continuing rise in the LHC beam intensity, thereby heightened their sensitivity to electromagnetic resonances. While the heating itself is not the primary subject of this work, the associated failures have motivated a broader examination of how the different geometries of the vacuum interconnect...
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Jeffrey Dooling (Argonne National Laboratory)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
With the commissioning and operation of the Advanced Photon Source Upgrade storage ring, higher charge is demanded from the injectors including the particle accumulator ring (PAR). Increased charge leads to a growth in PAR bunch length which can lead to inefficient injection into the booster synchrotron. Reduction in the extracted PAR bunch duration has been observed after modifications...
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Domenico Caiazza (Elettra-Sincrotrone Trieste S.C.p.A.), Davide Castronovo (Elettra-Sincrotrone Trieste S.C.p.A.)18/05/2026, 16:00MC7.T09: Normal Conducting MagnetsPoster Presentation
The Elettra 2.0 project involves the installation of 648 new electromagnets for the upgrade of the existing light source [1]. Following the design and prototyping phase, the magnet series are currently being manufactured and delivered to Elettra to be suitably characterized before the installation. To this aim, a new magnetic measurement laboratory has been built and equipped during last...
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Roberto Visintini (Elettra-Sincrotrone Trieste S.C.p.A.)18/05/2026, 16:00MC7.T21: InfrastructuresPoster Presentation
On July 2, 2025, at Elettra, we began the “Dark Period” (DP): the definitive shutdown of Elettra's Storage Ring (SR) with its auxiliary equipment and most of its beamlines. During the first phase of the DP, we removed the entire SR lattice structure with its associated cabling, piping, and supports. At the same time, the Service Area (SA), where most of the equipment for operating the SR was...
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Nuaman Shafqat (Elettra-Sincrotrone Trieste S.C.p.A.)18/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
The 500 MHZ Elettra type cavity have been implemented in the 3rd generation light source Elettra Synchrotron Light Source since the beginning of its operations. It is a normal conducting, single cell cavity with no High Order Modes (HOM) dedicated dampers. The very same cavity will be used for the new low emittance Elettra 2.0 (E2.0) project. E2.0 will host four independent RF accelerating...
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Borja Rodriguez Mateos (European Organization for Nuclear Research)18/05/2026, 16:001MC6.T04: Accelerator/Storage Ring Control SystemsPoster Presentation
Power supply ripples at various frequencies - characteristic to the magnet circuits or from the electrical network - have always been an issue in accelerator operations, with several mitigation measures put in place over the years. This contribution summarises the efforts in the CERN SPS over the last years to compensate the ripple at 50 Hz and its harmonics in the main quadrupole circuits,...
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Anna Radoslavova (European Organization for Nuclear Research, Goethe University Frankfurt)18/05/2026, 16:001MC1.A01: Hadron CollidersPoster Presentation
Transverse emittance growth can adversely affect the luminosity production performance of colliders such as the Large Hadron Collider (LHC) at CERN. While Intra-Beam Scattering (IBS) and Synchrotron Radiation (SR) effects represent important ingredients for the emittance evolution, measurements in the LHC do not match predictions from these two effects, suggesting the presence of additional...
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Thomas Zickler (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T36: SustainabilityPoster Presentation
The North Experimental Area at CERN is a versatile experimental facility that provides proton, hadron, electron, muon, and ion beams to over 2000 users annually for detector R&D and fixed-target experiments. Currently, this facility, which is more than 45 years old, is undergoing a consolidation program to enhance availability and reliability and to prepare for new experiments and test beams...
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Lina VALLE (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A04: Colliders: Circular Accelerators and Storage RingsPoster Presentation
Beams in FCC-ee are injected from a full-size booster synchrotron, placed on top of the collider in the same tunnel. The booster prepares electron and positron bunch trains alternately for all foreseen beam energies from 45.6 GeV to 182.5 GeV and operation modes such as filling the collider from scratch or top-up. Polarized bunches could furthermore be supplied for the beam energy calibration....
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Giuseppe Scarantino (Istituto Nazionale di Fisica Nucleare, Laboratori Acceleratori e Superconduttività Applicata, Sapienza University of Rome)18/05/2026, 16:00MC7.T10: Superconducting MagnetsPoster Presentation
The 6D cooling section of a Muon Collider is essential to produce a high-brightness muon beam. To demonstrate the technological feasibility of this system, the IMCC has started a Muon Cooling Demonstrator programme. Within the programme, test stands integrating 3 GHz RF cavities and superconducting solenoids will be developed to test the RF breakdown limit in a 7 T background magnetic field....
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Ms Agnieszka Zwozniak (European Spallation Source)18/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
In this paper we present the results of European Spallation Source (ESS) Superconducting Linac (SCL) cavities measurements which allowed us to determine crucial parameters for future SCL operation and Low-Level Radio Frequency (LLRF) systems tuning. The campaign of measurements was performed during the SCL commissioning for the second beam on dump campaign and prior to beam on target. All the...
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Ms Agnieszka Zwozniak (European Spallation Source)18/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
The ESS (European Spallation Source) is presently configured as a 1.3 GeV linac, with three superconducting cavity sections starting from 90 MeV. For the moment in operation, we have 82 superconducting cavities: 26 double spoke resonators (b=0.5), 36 medium and 20 high beta elliptical cavities (respectively b=0.67 and 0.86). In this paper we would like to present the restart of the Linac after...
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Eric Baussan (Institut Pluridisciplinaire Hubert Curien), Julien Hiegel (Centre National de la Recherche Scientifique)18/05/2026, 16:00MC1.A09: Muon Accelerators, Neutrino Factories, Muon CollidersPoster Presentation
The ESSnuSB+ project aims to produce an intense neutrino beam using the high-power proton linac of the European Spallation Source (ESS). A key element of the facility is the target station, where a 2.5 GeV proton beam interacts with a granular titanium-sphere target to generate an intense pion-meson beam. These pions are focused by a magnetic horn and directed toward a storage ring before...
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Pau Jordan Oliveras Cejas (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T31: Subsystems, Technology and ComponentsPoster Presentation
Ethernet-enabled Data Acquisition and Supervision (EDAQ) systems have become the standard platform for commissioning, controlling, and supervising the next generation of Quench Protection Systems (QPS) at CERN. EDAQ-equipped QPS devices have been installed in recent upgrades to magnet test facilities, most notably in the IT-String test facility.
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This contribution summarizes the operational... -
Ilias Efthymiopoulos (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T21: InfrastructuresPoster Presentation
The European Laboratories for Accelerator Based Sciences (EURO-LABS) programme advances research frontiers by providing unified Transnational Access (TNA) to leading European Research Infrastructures (RIs) in the Physical Sciences. It brings together the nuclear physics, accelerator, and detector R\&D communities to foster collaboration and stimulate synergies. With 33 partners...
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Thorsten Hellert (Lawrence Berkeley National Laboratory)18/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
Large language models are becoming increasingly relevant for accelerator operations, where they assist with common tasks like retrieving historical data, preparing analysis scripts, and coordinating multi-step procedures. At the Advanced Light Source (ALS), these operators use their personal jargon (e.g. “sector 4 beam current”) to search for the correct PV name from numerous channels,...
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Roberto Fernandez Bautista (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T17: Technology: Alignment and SurveyPoster Presentation
The Future Circular Collider (FCC-ee) is a next-generation electron-positron collider under design at CERN to advance particle physics beyond the Large Hadron Collider (LHC) era. This 91 km circumference accelerator, located at a depth of about 200 m underground, raises significant challenges for the alignment of its components. Thousands of elements must be positioned within a few tens of...
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Patrick Ellison (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T31: Subsystems, Technology and ComponentsPoster Presentation
With more than 30km of beam lines and over 10,000 devices, CERN's particle accelerators are rich sources of data, providing real opportunities for developing new equipment monitoring and automation tools using data analysis and machine learning.
The ready availability of low-cost computers and microcontrollers, such as Raspberry Pi and ESP32 devices, could enable a flexible data acquisition...
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Max Joseph Kellermeier (Deutsches Elektronen-Synchrotron DESY)18/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
Laser-based high power THz generation advances rapidly, enabling THz-driven electron acceleration beyond the breakdown limits of conventional RF-driven structures. For this purpose the polarization of the externally coupled THz pulse has to match the required TM₀₁ mode. Vice versa, beam-driven high power THz generation also relies on the TM₀₁ mode and requires efficient out-coupling and...
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VIVEK KUMAR (Jawaharlal Nehru University)18/05/2026, 16:00MC8.U08: Radiation EffectsPoster Presentation
To evaluate radiation tolerance, 25 mol% Gd₂O₃-doped CeO₂ nano powders were synthesized by a sol-gel combustion route and sintered at 800°C, 1000°C, and 1300°C to obtain different grain sizes. The pellets were irradiated with 100 MeV iodine ions to simulate fission-fragment damage, and structural and electronic changes were examined using synchrotron GIXRD, Raman spectroscopy, EXAFS, XPS, and...
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Delphine Domange (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T10: Superconducting MagnetsInvited poster
Superconducting magnets of high-energy accelerators are vulnerable to beam-induced damage and previous experiments have characterized the damage limits of Nb$_3$Sn sample coils under proton-beam impact. This paper presents a follow-up experiment at CERN's HiRadMat facility investigating the combined effect of radiation ageing and beam impact on superconducting sample coils. The coils were...
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Philipp Ziegler (Goethe University Frankfurt, European Organization for Nuclear Research)18/05/2026, 16:00MC1.A02: Lepton Circular CollidersPoster Presentation
Beam losses caused by interactions between the circulating beam and dust grains have been observed at many particle accelerators, leading to premature beam dumps, quenches of superconducting magnets, and vacuum pressure bursts. At some facilities, these events have a significant impact on the overall accelerator performance.
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The mechanisms by which dust grains detach from vacuum-chamber... -
Tatiana Pieloni (École Polytechnique Fédérale de Lausanne)18/05/2026, 16:001MC1.A01: Hadron CollidersPoster Presentation
Accurate luminosity calibration is essential for precise cross-section measurements and reliable machine performance optimization. In colliders with several interaction points, the cumulative beam–beam effects depend on the number of collision partners of individual bunches, which can bias luminosity calibration if not properly accounted for. To investigate this experimentally, a dedicated...
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1232. Experimental validation of an additively manufactured 1.3 GHz radio frequency cavity (MOP7171)Mr Hermann Winter (Universität der Bundeswehr München)18/05/2026, 16:00MC7.T35: Advanced Manufacturing Technologies for Accelerator ComponentsPoster Presentation
A compact continuous-wave (CW) 1.3GHz linear par
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ticle accelerator (linac) is currently under development as
the core component of a high energy positron annihilation
lifetime spectroscopy setup. The associated thermal load
imposes stringent requirements on the design and manu
facturing of the underlying multi-cell radio-frequency (RF)
cavity. Metal-based laser powder bed fusion... -
Yong Liu (High Energy Accelerator Research Organization)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The J-PARC linac accelerates a 50 mA H⁻ beam up to 400 MeV for user
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operation. To mitigate emittance growth caused by space-charge effects,
transverse beam profiles are measured using wire scanner monitors (WSMs)
for routine beam tuning. Tungsten is generally used as the wire
material. However, the WSMs employ carbon nanotube (CNT) wires in the low-energy region between the RFQ and... -
Balsa Terzic (Old Dominion University)18/05/2026, 16:00MC6.T22: Reliability, OperabilityPoster Presentation
At Jefferson Lab, the Continuous Electron Beam Accelerator (CEBAF) features a unique design with two linear accelerators and two arc sections allowing for multiple turns of the electron beam, as well as four experimental end stations. This topology leads to increased beam losses, especially in the spreader and recombiner regions connecting the arcs to the LINACs and in the extraction regions...
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Nikolai Yampolsky (Los Alamos National Laboratory)18/05/2026, 16:00MC6.T04: Accelerator/Storage Ring Control SystemsPoster Presentation
Accelerator complexes contain tens of thousands of interdependent components, and aging infrastructure amplifies the risk of equipment faults and costly, unscheduled shutdowns. At the Los Alamos Neutron Science Center (LANSCE), we are developing a data-driven framework that flags developing problems early enough to address them during scheduled maintenance, thereby improving reliability and...
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Jacqueline Keintzel (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A02: Lepton Circular CollidersPoster Presentation
The FCC-ee aims at delivering high-precision particle-physics measurements over a wide beam-energy range, from the Z pole at 45.6 GeV up to 182.5 GeV, above the top-pair production threshold. Achieving the target physics precision requires an exceptionally accurate determination of the centre-of-mass energy and, consequently, of the beam energies. The baseline approach relies on resonant...
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Paolo Craievich (Paul Scherrer Institute)18/05/2026, 16:00MC1.A02: Lepton Circular CollidersInvited poster
The FCC-ee demands an injector complex capable of delivering high-current, high-brightness electron and positron beams with exceptional efficiency. Within the CHART/FCC-ee Injector Study collaboration, a revised injector layout has been developed to optimize performance, cost, and power consumption. A central pillar of this effort is the tuning-free, high-gradient normal-conducting RF...
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Jacqueline Keintzel (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A02: Lepton Circular CollidersPoster Presentation
The Future electron positron Circular Collider, FCC-ee, is a proposed next-generation facility designed to deliver very high luminosities across a broad beam-energy range, from the Z pole at 45.6 GeV up to 182.5 GeV. Achieving the target performance in the presence of realistic lattice imperfections represents a significant challenge. To address this, a comprehensive commissioning strategy is...
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Dr Marcos Quispe (ALBA Synchrotron (Spain))18/05/2026, 16:00MC7.T31: Subsystems, Technology and ComponentsPoster Presentation
In the context of the experiments to be carried out at the fast X-ray tomography and radioscopy beamline (FAXTOR-BL31) of the ALBA synchrotron, a Fast Periodic Shutter (FPS) is being designed. Its purpose is to prevent a high dose rate on the sample and to provide synchronization with the acquisition protocol. This FPS is based on the combination of tungsten blades driven by a servomotor....
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Sean OTool (Stanford University)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
We report a technique for fabricating optically transparent x-ray optics by laser drilling precision pinholes in diamond membranes. This work supports a novel diagnostic under development at SLAC which will profile the Coulomb field of relativistic electron bunches with femtosecond-um spatio-temportal resolution.
Diamond is chosen for its specific transmission window extending from RF...
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Nuaman Shafqat (Elettra-Sincrotrone Trieste S.C.p.A.)18/05/2026, 16:00MC1.A08: Colliders: Linear AcceleratorsPoster Presentation
The FERMI seeded free-electron laser (FEL), located at the Elettra laboratory in Trieste, is a 4th-generation light source operating in the vacuum ultraviolet to soft X-rays range. In order to extend the FEL spectral range to shorter wavelengths, an increase in the linear accelerator (linac) energy from 1.5 to 2.0 GeV is required. S-band HG module is designed to fulfil the upgrade requirement...
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Clément Zrounba (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T31: Subsystems, Technology and ComponentsPoster Presentation
The CERN Electrical Power Converters (EPC) group operates thousands of converters, most via the Function Generator/Controller (FGC) device family. Its new generation, FGC4, built on an AMD Zynq UltraScale+ MPSoC, will support future EPC applications. Some, like POPS+, require low‑latency inter‑FGC communication. We present the FGC Private Network (FPN) protocol stack and library enabling this...
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Matthias Bonora-Tam (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T10: Superconducting MagnetsPoster Presentation
This paper presents the main results of the magnetic measurements performed on the available MQXFB quadrupoles at room and cryogenic temperature. The measurement program, carried out during the different stages of the magnet assembly and by using different instruments such as the rotating-coil and stretched-wire systems, allows an early identification of the field errors and a comprehensive...
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Gábor Anda (HUN-REN Centre for Energy Research)18/05/2026, 16:00MC7.T34: Permanent MagnetsPoster Presentation
A tunable permanent-magnet quadrupole based on two independently rotatable Halbach rings has been developed for compact, low-energy beam transport systems. Previously characterized with Hall-probe measurements, the same prototype is here studied using a high-precision rotating-coil bench at CERN, in the frame of a long-standing collaboration with the Wigner Institute. The integrated gradient,...
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Sergey Kutsaev (RadiaBeam Technologies (United States))18/05/2026, 16:00MC8.A28: Applications: Industrial AcceleratorsPoster Presentation
This talk reports on the design, fabrication, and beam testing of a novel 2 MeV Ku-band (15.14 GHz) traveling wave electron linear accelerator developed by RadiaBeam Technologies for a battery-powered, hand-portable X-ray generator intended for field radiography and non-destructive testing (NDT). The goal is to replace hazardous isotopes, such as Ir-192, Cs-137, and bulky betatrons with a...
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Dr Driss Oumbarek Espinos (High Energy Accelerator Research Organization)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The SuperKEKB collider aims to surpass the previous luminosity record of its predecessor by 40 times. The understanding of the electron and positron beam phase-space (P-S) is of upmost importance to understand the efficiency of the machine and also to be able to plan possible improvements and anticipate the machine limits. Multiple diagnostics are capable of giving global information about the...
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Jorg Wenninger (European Organization for Nuclear Research), Tatiana Pieloni (École Polytechnique Fédérale de Lausanne)18/05/2026, 16:00MC1.A01: Hadron CollidersPoster Presentation
During the operation of the Large Hadron Collider (LHC), regular beam separation (luminosity) scans are essential for accurately determining beam emittance and give valuable observables for monitoring the stability of luminometers. These scans provide a critical insight into beam quality and detector performance. In this study, we investigate how beam-beam interactions influence luminosity...
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Massimo Giovannozzi (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A16: Colliders: Advanced ConceptsPoster Presentation
Experimental observations indicate that a significant fraction of the stored beam energy in the CERN Large Hadron Collider (LHC) is contained in the transverse beam halo. Combined with the anticipated increase in beam brightness in the High-Luminosity LHC (HL-LHC) and new expected fast failure scenarios resulting in a loss of large-amplitude particles, an overpopulated beam halo poses risk to...
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Dr Ahmed Elghandour (European X-Ray Free-Electron Laser)18/05/2026, 16:00MC7.T15: Technology: Undulators and WigglersPoster Presentation
European XFEL is planning the installation of superconducting undulators as afterburners downstream with respect to SASE2, one of the hard X-ray undulator lines, to provide even harder X-ray photon energies and a larger tuning range. The Superconducting undulator PRE-SerieS mOdule (S-PRESSO) consisting of two pair of coils, a phase shifter, and correction coils is in production by Bilfinger...
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Frank Zimmermann (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A10: Colliders: Damping RingsPoster Presentation
The FCC-ee injector complex includes a dedicated damping ring planned to operate at 2.86 GeV energy to reduce the emittance of the incoming electron and positron beams prior to their injection into the high-energy linac, where they will be accelerated up to 20 GeV for the main booster ring. Ionization of the residual gas caused by interacting with the circulating bunches may occur, and these...
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Marcin Patecki (Warsaw University of Technology)18/05/2026, 16:00MC1.A25: Beyond CollidersPoster Presentation
The ALICE fixed-target (ALICE-FT) programme uses crystal-assisted halo splitting to send a controlled flux of beam-halo particles onto an internal target upstream of the ALICE interaction point, enabling a rich fixed-target physics programme in parallel to collider running. We present the final feasibility assessment for operation with HL-LHC Pb beams.
Using SixTrack–FLUKA tracking with...
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Benno List (Deutsches Elektronen-Synchrotron DESY)18/05/2026, 16:00MC7.T38: Mechanical designPoster Presentation
The future PETRA IV synchrotron radiation facility at DESY, Hamburg will be a 4th generation light source in the 2.3km long PETRA tunnel, with first light in 2032. It comprises 8 straight sections and 8 arcs with 288 girders and space for 72 insertions.
The hybrid 6 bend achromat accelerator lattice aims for as much periodicity as possible to maximise symmetry, which is beneficial for beam...
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Dr Marcel Himmerlich (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T35: Advanced Manufacturing Technologies for Accelerator ComponentsPoster Presentation
Functionalized amorphous carbon (a-C) coatings are being developed to reduce the secondary electron emission yield (SEY) and to control the surface resistance of ceramic supports for the new generation of HL-LHC injection kicker magnets. Pressure spikes observed during high-voltage pulsing of the new injection kicker magnets are attributed to flashovers caused by high electron emission and...
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Michael Kaemingk (Los Alamos National Laboratory)18/05/2026, 16:00MC6.T33: Online Modelling and Software ToolsPoster Presentation
Important RF cell parameters such as the shunt impedance 𝑅𝑠, the quality factor 𝑄, and the ratio of accelerating to peak field, depend on the cell geometry. Thus, it is desirable to optimize the cell profile to optimize the performance of the cell. The use of B-splines to optimize cell profiles with a genetic algorithm has been demonstrated. The RF field solver Superfish, however, does not...
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Kyle Hazelwood (Fermi National Accelerator Laboratory)18/05/2026, 16:001MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
The resistive wall current monitor (RWCM) data from the Fermilab Recycler Ring (RR) is used to reconstruct the longitudinal profile of proton beams circulating in the machine. This procedure, commonly referred to as tomography, has proved to be invaluable in tuning the machine. In 2013 Recycler was re-purposed as a proton stacker and charged with implementing slip-stacking to double the...
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Guido Sterbini (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A01: Hadron CollidersPoster Presentation
During dedicated machine development periods in 2025, the LHC operated with High-Luminosity LHC (HL-LHC) beam parameters to study transverse beam dynamics in a high-intensity and high pile-up regime. For the first time, collisions with trains of $2.3\times10^{11}$~ppb were achieved, reaching a pile-up of 150 and reproducing operational conditions close to those foreseen for the HL-LHC. These...
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Wei Hou Tan (SLAC National Accelerator Laboratory)18/05/2026, 16:00MC6.T27: Instrumentation: Low Level RFPoster Presentation
High precision Low-level RF (LLRF) control and monitoring systems for future particle accelerators will be a significant technical challenge as the requirements in performance, flexibility and affordability become increasingly stringent. We have developed an RF system-on-chip (RFSoC) based next generation LLRF (NG-LLRF) for S-band accelerating structures, which samples and synthesizes the RF...
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Yan Zhao (Tsinghua University)18/05/2026, 16:00MC8.A28: Applications: Industrial AcceleratorsPoster Presentation
Electron accelerators with high average power output are widely used in radiation processing fields such as material modification, food sterilization, and environmental pollutant treatment. This paper presents a comprehensive high-power test of a 40kW electron accelerator. Key parameters including electron beam energy, average beam current, output power, and pulse characteristics were...
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Vasco Gomes Namora (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T16: Pulsed Technology (magnet and power supplies)Poster Presentation
Two sets of 6 fast-pulsed vertical and two sets of 4 fast-pulsed horizontal dilutor kicker magnets form part of the so-called LHC beam dumping system, which removes the counter-rotating beams safely from the collider onto an absorber block. Each vertical and horizontal diluter magnet is powered by a pulse generator via a low-impedance transmission line resulting in maximum damped sinusoidal...
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Franck Esnault (Grand Accélérateur National d'Ions Lourds, Commissariat à l'Énergie Atomique et aux Énergies Alternatives)18/05/2026, 16:00MC7.T35: Advanced Manufacturing Technologies for Accelerator ComponentsPoster Presentation
The “Super Separator Spectrometer” project S3 is under technical commissioning at the GANIL facility (Caen-France). It is a new research installation designed for fundamental physics experiments with high intensity radioactive heavy ions beams produced by the SPIRAL2 linear accelerator. This spectrometer will open new horizons for nuclear physics.
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The S3 spectrometer is made of 77... -
Carlota Pereira Carlos (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
Nb-coated Cu Superconducting Radio Frequency (SRF) cavities are a key technology for the Future Circular Collider (FCC), requiring performance beyond the current state of the art. Recent Nb/Cu coatings deposited by High Power Impulse Magnetron Sputtering (HiPIMS), together with advances in Cu cavity manufacturing and surface preparation, have already shown promising results*.
To further...
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Chiara Pasquino (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A17: Colliders: High Intensity AcceleratorsPoster Presentation
A new Beam Gas Ionisation monitor is being designed for the HL-LHC era. The paper described the challenges for the mechanical design of the instrument taking into consideration the instrument functionality, impedance compatibility, vacuum acceptance and tunnel integration. The new design takes into consideration as well the lessons learnt from the operation of these monitors in the injectors...
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Gianluca Martino (Lawrence Berkeley National Laboratory)18/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
Reliable hands-off injector operation calls for fast, sample-efficient tuning under drift and competing goals (e.g., capture efficiency, energy spread, transmitted charge). We present an autotuning framework for the ALS injector combining complementary online optimizers for robust performance under strict machine-protection/operability constraints. The controller alternates methods based on...
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Quentin Bruant (Commissariat à l'Énergie Atomique et aux Énergies Alternatives)18/05/2026, 16:00MC1.A02: Lepton Circular CollidersPoster Presentation
We present the impact of the main dipole field quality on the dynamic aperture (DA) and the emittance tuning of the High Energy Booster (HEB) of the leptonic version of the future circular colliders. Multipole field imperfections up to order six (normal: b2–b6; skew: a2–a6) are introduced into the main dipoles using measured values, interpolated at 8.8 mT (the HEB injection energy), and...
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Paula Desire Valdor (European Organization for Nuclear Research, University of Groningen)18/05/2026, 16:00MC1.A09: Muon Accelerators, Neutrino Factories, Muon CollidersPoster Presentation
The cooling process is one of the most critical challenges for the future Muon Collider, as muons are initially produced with a very large emittance that must be significantly reduced before acceleration. This cooling must occur rapidly, well within the muon lifetime. At low energies, collective effects such as space charge and intrabeam scattering can strongly influence emittance growth and...
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Lisa Soubirou (Université Paris-Saclay)18/05/2026, 16:00MC1.A09: Muon Accelerators, Neutrino Factories, Muon CollidersPoster Presentation
Circular muon colliders offer a promising route to multi-TeV center-of-mass energies with high luminosity. The baseline design for the high-energy complex includes a chain of pulsed synchrotrons covering energies from 63 GeV to 5 TeV. This chain combines normal and hybrid synchrotrons, using both fixed-field superconducting and pulsed normal-conducting magnets. The short muon lifetime (2.2...
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Charles Rohde (Los Alamos National Laboratory)18/05/2026, 16:00MC6.T25: Instrumentation: LasersPoster Presentation
We present the detailed design and hardware implementation required to build a laser wire scanner for H- bunches at the Los Alamos Neutron Science Center (LANSCE) in the low energy beam transport (LEBT) section of the LANSCE beam line. The presented design is modular and supports a variety of input laser beam orientations, as well as differing laser beam diameters and powers. A custom-built...
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Jui-Che Huang (National Synchrotron Radiation Research Center)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
A high-resolution, real-time bunch-by-bunch phase detection system has been developed and deployed at the Taiwan Photon Source (TPS) to monitor and analyze synchronous phase behavior. The system is integrated with the control system to implement the remote phase adjustment function. The detector architecture utilizes an analog I/Q demodulation scheme operating at the 1.5 GHz third harmonic of...
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Chunyi Wu (National Synchrotron Radiation Research Center)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
A fast beam-based alignment (BBA) method has been implemented at the Taiwan Photon Source to significantly enhance the efficiency of aligning beam position monitors with quadrupole magnet centers. By utilizing sinusoidal excitation of correctors and employing synchronous detection algorithms, alignment offsets are efficiently extracted across the entire storage ring. Experimental results...
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Dr Marcos Quispe (ALBA Synchrotron (Spain))18/05/2026, 16:00MC7.T13: CryogenicsPoster Presentation
Efficient use of gaseous and liquid helium, a non-renewable resource essential for accelerator-based experiments, is a key priority at ALBA Synchrotron Light Source. This work presents the operational status of ALBA’s helium liquefaction plant and the liquid-helium production achieved in recent years, based on recovery from its use in the BOREAS, LOREA, CLAESS and MSPD beamlines. The helium...
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Joel Valerian (The University of Melbourne)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Radiative temporal diagnostics like Cherenkov diffraction radiation easily offer ps-resolution but require in-vacuum operation. For detectors in air, prompt Cherenkov radiation (ChR) provides ps-resolution while greatly reducing deployment complexity. We investigate such in-air ChR diagnostics to resolve sub-ns bunch structure at the Australian Synchrotron's injector linac. Existing monitors...
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Chahinez Boutelaa (Université Paris-Saclay, CNRS/IN2P3, IJCLab)18/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
Specific heat treatments applied to superconducting radio-frequency (SRF) cavities, such as nitrogen infusion or Mid-T baking, aim to improve the quality factor (Qo) at medium accelerating fields (˜10–20 MV/m). These treatments reduce the BCS surface resistance by tuning the mean free path of niobium over a few hundred nanometers, either by diffusing oxygen from the native oxide layer or by...
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Michael Ronniger (European X-Ray Free-Electron Laser)18/05/2026, 16:00MC7.T15: Technology: Undulators and WigglersPoster Presentation
The pulsed wire technique has been used in the past mainly for trajectory control
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in wigglers and undulators. Including dispersion and pulse width corrections improved significantly the quality of these measurements, especially for short period and/or long undulators. Recent approaches use the direct measured pulse instead of the model of an idealized rectangular pulse and the impact of tiny,... -
Atoosa Meseck (Helmholtz-Zentrum Berlin für Materialien und Energie, Johannes Gutenberg University Mainz)18/05/2026, 16:00MC7.T15: Technology: Undulators and WigglersPoster Presentation
Since 2018, the BESSY II storage ring has operated a cryogenic permanent magnet undulator (CPMU), which was developed and constructed in-house. With a period of 17 mm, CPMU17 was the first in-vacuum undulator to be installed at BESSY II. Another CPMU (CPMU20) and the world’s first in-vacuum APPLE II undulator (IVUE32) are currently under construction and will be installed at BESSY II within...
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Marcus Lau (TRUMPF Huettinger GmbH)18/05/2026, 16:00MC7.T08: RF Power SourcesPoster Presentation
The overall efficiency of rf power amplifier has a crucial impact on the operating costs, especially for high power systems and when the total installed power is high. There are ways for optimizing the overall efficiency by design and by operational settings. Here we present a way to optimize the efficiency, and therefore directly the operating costs, by adaption of the drain voltage....
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Thomas Bauler (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T21: InfrastructuresPoster Presentation
The High-Luminosity Large Hadron Collider (HL-LHC) project at CERN is a major upgrade LHC’s today instantaneous luminosity by a factor of five and today total integrated luminosity by ten. This involves extensive new infrastructure, including underground galleries, access shafts, and surface facilities, pushing accelerator technology beyond current limits. Managing this complexity requires...
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Sen Yue (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T16: Pulsed Technology (magnet and power supplies)Poster Presentation
CERN is working towards a new, larger circular collider complex, the Future Circular Collider (FCC-ee), with a perimeter of 90.7 km. This paper addresses some of the challenges associated with beam-transfer equipment. The FCC-ee requires numerous kicker systems for beam disposal and transfers from injectors to the main collider ring. To standardise hardware parameters across machines and...
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Giulia Nigrelli (Sapienza University of Rome, Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, European Organization for Nuclear Research)18/05/2026, 16:00MC1.A26: Colliders: Machine Detector InterfacePoster Presentation
The electron–positron Future Circular Collider (FCC-ee) is a proposed high-energy lepton collider designed to achieve unprecedented luminosity and precision in the study of fundamental particle physics. To fully exploit this potential, it is crucial to control beam-induced experimental backgrounds to ensure safe operation and optimal detector performance. This is particularly challenging due...
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Ilias Efthymiopoulos (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A01: Hadron CollidersPoster Presentation
In the Large Hadron Collider (LHC) the multi-bunch protons beams of collide at the four main interaction points along its 26.7~\unit{\km} circumference. While global beam parameters provide a macroscopic view of machine performance, a detailed bunch-by-bunch analysis offers a unique “radiograph” of the underlying beam dynamics and collective effects. In this work, we present a...
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Matthieu Marchand (Institut National de Physique Nucléaire et de Physique des Particules)18/05/2026, 16:00MC7.T10: Superconducting MagnetsPoster Presentation
High Temperature Superconductors (HTS) and Canted Cosine Theta (CCT) technologies have been extensively studied in recent years, particularly for high-field accelerator magnets. Their application to next-generation particle accelerators is especially promising. This article presents the combination of these two technologies for the FCC-ee Final Focus (FF) quadrupole QC1L/R1, including its...
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Illya Drebot (Istituto Nazionale di Fisica Nucleare)18/05/2026, 16:00MC1.A02: Lepton Circular CollidersPoster Presentation
Precise regulation of the bunch population in FCC-ee is required to maintain the charge imbalance between collision bunches within the 3-5% tolerance that preserves beamstrahlung limits, bunch-length stability, and avoids flip–flop behaviour. Laser-driven Compton backscattering (CBS) has been proposed as an active actuator for bunch-by-bunch intensity control.
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An Xsuite-based simulation... -
Cheng-Yuan Lin (National Synchrotron Radiation Research Center)18/05/2026, 16:00MC6.T17: Instrumentation: Alignment and SurveyPoster Presentation
The growing demand for high-throughput XAS measurements at next-generation synchrotron light sources makes On-the-Fly Scan indispensable. Original software-based implementations improved efficiency but were limited by slow PC communication (~8 Hz) and soft-trigger jitter (<10 ms), restricting precise synchronization for multi-axis, non-linear trajectories and long-range energy scans.
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This... -
Mathieu Taquet (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T08: RF Power SourcesPoster Presentation
The progressive obsolescence and the discontinuation of vacuum tube production are driving the transition towards solid-state alternatives in RF acceleration systems. In the 10 MHz RF system of the Proton Synchrotron (PS) at CERN, the discontinuation of a specific tetrode model used in the amplifier chain has motivated the evaluation of solid-state technology as a potential replacement. In...
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Guimei Wang (National Synchrotron Light Source II)18/05/2026, 16:00MC6.T05: Beam Feedback SystemsPoster Presentation
We present an accelerator-based X-ray beam stabilization approach that integrates X-ray beam position monitor (XBPM) signals into the fast orbit feedback (FOFB) system at NSLS-II. A high-speed electrometer and fiber-optic data link were developed to transmit XBPM position data to the storage-ring feedback controller at a 10 kHz rate. On the accelerator side, the XBPM signal is incorporated...
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Tatiana Pieloni (École Polytechnique Fédérale de Lausanne)18/05/2026, 16:00MC1.A01: Hadron CollidersPoster Presentation
With the LHC reaching percent-level luminosity precision, controlling systematic biases in luminosity calibration has become essential. Among these, the interplay between linear coupling and beam–beam interactions can alter the measured luminosity and consequently the visible cross-section during van der Meer (vdM) scans. The combined effect of nonlinear beam–beam forces and linear coupling...
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Purinut Lersnimitthum (Université Paris-Saclay)18/05/2026, 16:00MC1.A02: Lepton Circular CollidersPoster Presentation
Vibrations cause emittance growth, beam misalignment at the interaction point, and particle loss, limiting accelerator performance. Ground motion and technical noise are characterized by absolute power spectral density (PSD) and spatial correlation. Mechanical support resonances, which amplify these effects, are determined via transfer functions. A method to generate random displacements from...
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Muhammad Abdul Rehman (Institute of High Energy Physics)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Diagonal-cut plane Beam Position Monitors (BPMs) are used to measure the transverse position of the proton beam in the Rapid Cycling Synchrotron (RCS) at the China Spallation Neutron Source (CSNS). Significant transverse beam position offsets were observed at several locations along the RCS. These offsets are potentially attributable to abrupt changes in the cross-section of the upstream and...
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Liangting Sun (Institute of Modern Physics, Chinese Academy of Sciences)18/05/2026, 16:00MC8.U04: Isotope ProductionPoster Presentation
The global adoption of targeted alpha therapy (TAT) using actinium-225(²²⁵Ac)-labeled radiopharmaceuticals is rapidly expanding, driving an urgent need to scale up ²²⁵Ac production and improve supply reliability. Among potential production methods, accelerator-based high-energy proton irradiation of thorium-232(²³²Th) targets via the ²³²Th(p,x)²²⁵Ac reaction represents a promising and...
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Yoichi Sato (Japan Proton Accelerator Research Complex)18/05/2026, 16:00MC8.U11: Outreach and CommunicationsPoster Presentation
The Productive Research Environment (PRE) session at IPAC’25 explored practices and challenges in fostering sustainable and motivating research environments in the accelerator community. A preliminary survey of 51 managers and leaders revealed high levels of motivation during the early career stage, but also highlighted concerns regarding staffing shortages, budgetary constraints, and the...
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Tristan Calvet (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T21: InfrastructuresPoster Presentation
The CERN ISOLDE Facility is a premier Radioactive-Ion-Beams (RIBs) facility using the ISOL (Isotope Separation On-Line) method to provide RIBs at energies from 30 keV to 10 MeV/u for a large variety of experiments. Recognized worldwide for its significant contributions to nuclear physics, ISOLDE now faces the challenges of its aging infrastructure. As a consequence, a comprehensive improvement...
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Dr Bennet Krasch (Karlsruhe Institute of Technology)18/05/2026, 16:00MC7.T15: Technology: Undulators and WigglersPoster Presentation
Undulators are widely used in synchrotron storage rings and free-electron laser facilities. With the advent of low-temperature superconductors (LTS), a new generation of superconducting undulators (SCUs) emerged, including the recent new THz LTS undulator for FLUTE. At KIT, state-of-the-art magnetic and cryogenic measurement capabilities — provided by the Magnet and Cryogenics Facilities (MCF)...
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Jie Liu (Institute of Modern Physics, Chinese Academy of Sciences)18/05/2026, 16:00MC6.T04: Accelerator/Storage Ring Control SystemsPoster Presentation
The large-scale accelerator complex control system, LACCS, based on the self-developed high-speed and high-security communication protocol, CVLink, has been successfully deployed at HIAF (High Intensity heavy ion Accelerator Facility), a major national science and technology infrastructure in China. It has integrated the control of about 330,000 variables corresponding to 141 beam dynamics and...
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Mr Bernard Henrist (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T35: Advanced Manufacturing Technologies for Accelerator ComponentsPoster Presentation
The new beam screens for the High Luminosity LHC (HL-LHC) will be coated with a low Secondary Electron Yield (SEY) amorphous carbon (a-C) thin film to suppress electron multipacting and reduce heat loads to the cryogenic system. The production will cover 40 beam screens for the new superconducting magnets of the inner triplets in LHC interaction regions 1 (ATLAS) and 5 (CMS), as well as 24...
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Laurent Delprat (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T13: CryogenicsPoster Presentation
Large-scale helium refrigeration cryogenic systems are a key element, essential to the safe and reliable operation of particle accelerators using superconducting devices such as radio-frequency cavities or magnets. The long-term success of the LHC operation with an outstanding physics production to date paves the way towards the High-Luminosity LHC (HL-LHC) upgrade to be operated until the...
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ZhenWei Wang (Shanghai Institute of Applied Physics, Chinese Academy of Sciences)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationInvited poster
The precise measurement of electron beam profiles is important for accelerator diagnostics. Laser wire scan is a classical and practicable method for beam size measurement which is based on Laser Compton scattering. Conventional laser wire scan methods require two separate scans: one for the horizontal and one for the vertical size. However, the slant-scattering geometry of Shanghai Laser...
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Petar Trifunović (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T14: Vacuum TechnologyPoster Presentation
MolFlow is a test-particle Monte Carlo code for ultra-high vacuum simulations, primarily intended for use in the field of particle accelerators. This contribution gives an overview of updates made to the code in recent years. The graphical user interface has been improved and a new feature has been added for extracting simulation results along user-defined 3D paths. Additionally, the code can...
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Guido Sterbini (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A01: Hadron CollidersPoster Presentation
The magnetic coupling between nearby accelerator rings can introduce unwanted perturbations to beam dynamics, representing a potential concern for future colliders such as the High-Luminosity Large Hadron Collider, or multi-ring facilities such as the Future Circular Collider or the Muon Collider complex. To explore and benchmark this effect, dedicated tests were performed to study the...
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Ting Wing CHOI (Uppsala University)18/05/2026, 16:00MC1.A09: Muon Accelerators, Neutrino Factories, Muon CollidersPoster Presentation
The LEnuSTORM (low-energy neutrinos from stored muons) is a proposed facility that enhances the performance of the ESSnuSB* (European Spallation Source Neutrino Super Beam) project by measuring neutrino cross sections in the energy range 200-600\,MeV, where data is largely missing. The facility utilizes a 1.25\,MW proton beam from the European Spallation Source linac, which is compressed in an...
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Joseph Calvey (Argonne National Laboratory)18/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
The reliability of cooling systems is critical for removing substantial amounts (in megawatts) of waste heat from numerous high-power accelerator components (e.g., magnets, RF structures, power supplies) and beamline components*. Reliance on manual inspection of hundreds of pumps is inefficient and increases the risk of costly component damage and unplanned downtime. This study introduces a...
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Stephane Fartoukh (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A01: Hadron CollidersPoster Presentation
Initially planned to start in 2021 and to end up in 2024, the third exploitation period of the LHC (Run 3) started in 2022 and was extended by two years to fit the adjusted schedule of the High Luminosity LHC (HL-LHC) project. Run 3 was not only marked by the exceptional performance of the machine (with 125 1/fb delivered to the two high luminosity experiments ATLAS and CMS, both in 2024 and...
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Jorg Wenninger (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A01: Hadron CollidersPoster Presentation
The harmonic components of the LHC superconducting magnets exhibit a characteristic decay at low-field, primarily caused by current redistribution within the superconducting cables. This redistribution leads to variations in the multipolar components of the magnetic field, which in turn induce changes in the beam tune and chromaticity. To counteract these effects, a feed-forward compensation...
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Reyes Alemany-Fernandez (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A01: Hadron CollidersPoster Presentation
During summer 2025, the CERN Large Hadron Collider operated for the first time with oxygen and neon ion beams. Three different machine configurations---with collisions of p‑O, O‑O, and Ne‑Ne and with varying beam energies and optics---had to be commissioned and exploited for physics operation during the eight days allocated. This short run was challenging because of its very tight schedule,...
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Rasha Abukeshek (Université Paris-Saclay, CNRS/IN2P3, IJCLab)18/05/2026, 16:00MC1.A18: Colliders: Energy Recovery Linacs (ERLs)Poster Presentation
PERLE is a multi-turn Energy Recovery LINAC, currently under construction at IJCLab in Orsay (France). It is designed to accelerate electrons of 20 mA beam current to an energy of 250 MeV through three accelerating followed by three decelerating passes to dump the beam at injection energy (7 MeV). The first order lattice design has emerged. Therefore, assessing the sensitivity of the optics...
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Jean-Pierre Adam (CEA Gramat)18/05/2026, 16:00MC7.T08: RF Power SourcesPoster Presentation
Modern photomultipliers (PMs) are affordable, highly sensitive, easy to operate, compact, and sufficiently robust for demanding accelerator environments. In systems such as the Linear IFMIF Prototype Accelerator (LIPAc) in Rokkasho, Japan, whose radiofrequency (RF) subsystem delivers over 2 MW of RF power distributed among all the accelerating cavities, these characteristics make PMs...
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Kiel Hock (Brookhaven National Laboratory)18/05/2026, 16:00MC6.T33: Online Modelling and Software ToolsPoster Presentation
The Collider-Accelerator Department (C-AD) maintains and operates an injector complex that provides beams for the Relativistic Heavy Ion Collider (RHIC) and the future Electron-Ion Collider (EIC). Beams traveling in accelerator rings are grouped in bunches, where their profiles can be measured and displayed by a Wall Current Monitor (WCM). By analyzing those WCM signals, conclusions can be...
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Wei-Yu Lin (National Synchrotron Radiation Research Center)18/05/2026, 16:00MC6.T22: Reliability, OperabilityPoster Presentation
In early 2025, Linac modulator 3 at the Taiwan Photon Source (TPS) exhibited signs of performance degradation. To reduce electrical stress and prevent an unplanned failure during user operations, BR injection feasibility was evaluated at 130 MeV, 140 MeV, and the nominal 150 MeV. Two compounding mechanisms limit low-energy injection efficiency: increased geometric emittance from the Linac, and...
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Dr Mael Le Garrec (Laboratoire d’Annecy de Physique des Particules, Centre National de la Recherche Scientifique, Institut National de Physique Nucléaire et de Physique des Particules)18/05/2026, 16:00MC1.A02: Lepton Circular CollidersPoster Presentation
Ground motion can significantly impact beam stability in the FCC-ee, potentially degrading luminosity at the interaction point (IP). The study models vibrations of accelerator components, including the interaction region cryostats at the Machine Detector Interface (MDI) and the quadrupole girders in the arcs. Using measured power spectral densities (PSDs) and component-specific transfer...
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Christopher Leon (Los Alamos National Laboratory)18/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
Manually calibrating the HPSim simulator to the LANSCE accelerator is time-intensive and demands substantial domain expertise. In this work, we investigate the use of machine learning (ML) to automate much of the calibration process and substantially reduce tuning time. Specifically, our focus is the calibration of the front-end of the accelerator, which involves obtaining the amplitudes and...
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Xiaohan Lu (Institute of High Energy Physics)18/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
The rapid cycling synchrotron (RCS) of The China Spallation Neutron Source (CSNS) accumulates and accelerates the injection beam from 80 MeV/300MeV to the energy of 1.6 GeV and then extracts the high energy beam to the target. During each cycle of the RCS ring, beam positions at the same BPM vary over time due to energy and mode transitions. Traditional orbit correction averages turn-by-turn...
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Chong Shik Park (Korea University Sejong Campus)18/05/2026, 16:00MC6.T33: Online Modelling and Software ToolsPoster Presentation
We present a machine-learning surrogate model for the RAON LEBT that enables fast prediction of beam centroids at multiple diagnostics. A dataset of TRACK simulations spanning relevant steering-magnet and electrostatic-quadrupole settings is used to train fully connected neural networks. The surrogate model reproduces the underlying beam dynamics with high accuracy while providing...
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Jonathan Edelen (RadiaSoft (United States))18/05/2026, 16:001MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
Digital twins of particle accelerators are increasingly used for experiment planning, machine studies, and model‑based control. Achieving high‑fidelity predictions requires knowledge of machine properties that are difficult to measure directly, such as magnet alignments, transfer function variations, nonlinearities, and stray fields. In this work, we introduce parameterizations to capture...
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Chamseddine Benabderrahmane (European Synchrotron Radiation Facility)18/05/2026, 16:00MC7.T09: Normal Conducting MagnetsPoster Presentation
Projects to improve the injection performance of the storage ring and to reduce the equilibrium emittance of the booster are currently in progress at the ESRF. The booster light upgrade involves replacing 18 existing quadrupoles with 3 families (6 magnets per family) of quadrupoles featuring different yoke lengths. An upgrade of the injection zone includes the installation of a Non-Linear...
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Albert Hovhannisyan (Center for the Advancement of Natural Discoveries using Light Emission)18/05/2026, 16:00MC7.T35: Advanced Manufacturing Technologies for Accelerator ComponentsPoster Presentation
This report presents a carried out study of the technology and performance of three-dimensional printing for the production of parts intended for ultra-high-vacuum assemblies. The simple part geometry was taken as the reference sample. Computer-aided design and finite element method (FEM) analysis are employed to predict thermomechanical stresses and deformations at the sintering stage....
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Chiara Maccani (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A25: Beyond CollidersPoster Presentation
The TWOCRYST experiment at the CERN Large Hadron Collider provides a unique setup to study the behaviour of high-energy beam particles channelled by bent crystals. Two two-dimensional detectors in Roman Pots enable direct observation of channelled protons at energies from 0.45 TeV to 6.8 TeV. We present measured channelled-beam distributions for two bent silicon crystals with 50 urad and 7000...
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Philipp Müller (Goethe University Frankfurt)18/05/2026, 16:00MC7.T35: Advanced Manufacturing Technologies for Accelerator ComponentsPoster Presentation
To include 3D printed polymer-based materials in accelerator parts the relative permittivity and the dielectric loss tangent of these materials have to be well known. A quarter wave cavity was built to measure these properties at a resonance frequency of 500 MHz by inserting a cylinder of the material under test, resulting in a frequency and quality factor shift of the cavity. By fitting the...
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18/05/2026, 16:00MC8.A28: Applications: Industrial AcceleratorsPoster Presentation
Tong Chen (RefleXion Medical Inc.)
Liang Huo, Tong Li, Hao Tao, Zhen Feng, Liang Hu, Lin Zhou, Yongtao Liu (Chengdu Elekom Vacuum Electron Technology Co. Ltd)Beam energy is an important parameter of linear accelerator. Compact linacs for medical or industrial applications are usually not equipped with beam monitors. The commonly used methods are “half value layer” (HVL) in industrial...
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Amaia Villa (Tekniker), Andoni Egurrola Areta (Tekniker), Jorge Feuchtwanger (Ikerbasque)18/05/2026, 16:00MC7.T38: Mechanical designPoster Presentation
This contribution presents the development of a 750 MHz IH DTL cold model, a prototype of the second accelerating structure of the LINAC7 proton linac. The compact geometry required at this frequency imposes micron level tolerances, making mechanical alignment especially challenging. This constraint motivated the implementation of a virtual assembly workflow to control GD&T from the early...
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Oscar Azzolini (Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro)18/05/2026, 16:00MC7.T37: Innovation ProcessesPoster Presentation
The MAAT (Metal Additive Manufacturing for Accel-erator Technologies) project is a three-year INFN re-search programme launched in 2026, aimed at establish-ing Additive Manufacturing (AM) as a validated produc-tion route for high-performance accelerator components. MAAT brings together three INFN units: Legnaro (LNL), Padova (PD), and Milano LASA, combining complemen-tary expertise in...
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Veronica Guo (Stanford University)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Achieving high-precision, in situ measurements of electric fields is a critical challenge in ultrafast science and accelerator diagnostics. We report the progress in developing an approach using photoconductive sampling with micro-fabricated devices to map electron beam fields with unprecedented spatiotemporal resolution. This technique enables the first direct 3D vector field measurements of...
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René Schöder (Helmholtz-Zentrum Berlin für Materialien und Energie)18/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
Mid-T (ca. 220 to 350°C) heat treatment is known to improve the dissipation of superconducting Nb cavities by dissolving the surface oxide and diffusing oxygen into the near-surface bulk. HZB explores the use of RF power coupled into the cavity as a technique to perform the heat treatment directly in the cryostat, thereby also avoiding venting and re-oxidation following the treatment. Such an...
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Chin-Kang Yang (National Synchrotron Radiation Research Center)18/05/2026, 16:00MC6.T04: Accelerator/Storage Ring Control SystemsPoster Presentation
The Taiwan Photon Source (TPS) control system originally adopted the Extensible Display Manager (EDM) as its primary display framework. However, this architecture has gradually become insufficient in terms of maintainability, scalability, and system integration. To address these limitations, the TPS control system migration introduces Phoebus as the next-generation operator interface framework...
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Yoann Rozier (Epsyl, AVELION)18/05/2026, 16:00MC7.T31: Subsystems, Technology and ComponentsPoster Presentation
Radio-frequency (RF) windows are sensitive components that ensure both RF power transmission and vacuum integrity in linear accelerators (LINACs). In the X-band frequency, improving reliability is critical for compact LINAC systems, including application in non-destructive testing and medical technologies.
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This study presents an RF window designed for operation at 9.3 GHz with a 2.0 MW... -
Philipp Ziegler (European Organization for Nuclear Research, Goethe University Frankfurt)18/05/2026, 16:00MC1.A02: Lepton Circular CollidersPoster Presentation
Interactions of dust grains with the particle beams can degrade the performance of modern high-intensity accelerators. Existing models developed for the LHC assume grains smaller than the beam size and therefore a spatially uniform primary-particle flux through the grain. This approximation breaks down in flat lepton beams, where the vertical beam size can be smaller than the dust grain.
To...
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Anna Korsun (Université Paris-Saclay, CNRS/IN2P3, IJCLab)18/05/2026, 16:00MC1.A02: Lepton Circular CollidersPoster Presentation
Monochromatization is one of the most intriguing proposed operation modes of the FCC-ee, enabling a significant reduction of the centre-of-mass (CM) energy spread to a level comparable to the Higgs boson’s natural width produced through the s-mode direct channel at 125 GeV.
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Previous studies demonstrated its feasibility using earlier versions of the FCC-ee Global Hybrid Correction (GHC)... -
Roberto Cala' (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A01: Hadron CollidersPoster Presentation
The dominant background at the SND@LHC experiment consists of muons reaching the detector after traversing several tens of meters of rock. Monte Carlo simulations were instrumental in the experiment design and the background study. For the latter, a two-step workflow was adopted, first simulating with FLUKA proton$-$proton collisions in ATLAS and recording secondary muons on a virtual...
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Ms UPASANA BORDOLOI (Indian Institute of Technology Delhi)18/05/2026, 16:00MC8.U02: Materials Analysis and ModificationPoster Presentation
Ion beam irradiation is a powerful technique for defect engineering, offering precise control over ion fluence and energy. In this study, tellurium thin films deposited by thermal vapor evaporation were irradiated with 80 MeV Ag⁷⁺ ions at fluences ranging from 1×10¹¹ to 3×10¹² ions/cm². XRD shows a reduction in crystallite size and increasing tensile strain with fluence, supported by...
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Roberta Bianco (Istituto Nazionale di Fisica Nucleare)18/05/2026, 16:00MC7.T38: Mechanical designPoster Presentation
The CMS experiment at the CERN Large Hadron Collider features a high-precision electromagnetic calorimeter (ECAL) made of 61,200 lead tungstate crystals in its central (barrel) part. The crystals are both heavy and fragile, requiring extreme care during handling. As part of the HL-LHC upgrade, the ECAL barrel front-end electronics will be replaced, requiring the extraction, refurbishment, and...
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Dr Shane Koscielniak (TRIUMF)18/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
The relative fractional change of resonance frequency equals the fractional change in stored energy. This relation predicts the change of EM frequency when the walls of a metallic cavity are deformed or small objects inserted. J.M. Mueller derived this formula in 1939 by conceptual and mathematical errors. Casimir corrected those errors in 1949. The formula is also associated with J.C....
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Thomas Lucas (Paul Scherrer Institute)18/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
Local X-ray production, beam losses, and surface discolouration in colloidal graphite coated regions of the cavity indicate that multipacting continues to affect the operation of the 150 MHz flat-top cavity of the HIPA Ring Cyclotron.
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Particle-in-cell simulations were performed to confirm the phenomenon driving the issues and identify the specific operational conditions where it is driven.... -
Cristian Pira (Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro)18/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
The successful development of Nb3Sn/Cu coatings for the SRF cavities of next generation particle accelerators would allow for the operation of the SRF system at 4.5 K, resulting in a reduction of the needed cryogenic power by a factor 3 with respect to what normally needed for bulk Nb cavities, operated at 2 K. In the framework of I.FAST and ISAS collaborations, an optimized recipe for Nb3Sn...
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Prof. Xiaofang Hu (University of Science and Technology of China)18/05/2026, 16:00MC6.T27: Instrumentation: Low Level RFPoster Presentation
In free-electron laser facilities, the amplitude-phase flatness of the Radio Frequency (RF) pulses driving the electron beam is a key factor determining beam energy spread. Imperfections in the RF driving chain, such as the static nonlinearities of the vector modulator and the high-power amplifier, can significantly increase the intra-pulse flattop amplitude error and degrade the pulse...
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Helene Guerin (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A09: Muon Accelerators, Neutrino Factories, Muon CollidersPoster Presentation
Intense and highly collimated neutrino beams are intrinsic by-products of muon decays in a high-energy muon collider. The large boost of the primary muons confines the emitted neutrinos within angular spreads of order ($10^{-5}$ rad), resulting in fluxes far exceeding those achievable in conventional neutrino facilities. Their unique properties also open opportunities for high-energy neutrino...
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Tomás Silva (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T14: Vacuum TechnologyPoster Presentation
Warm vacuum interconnections are critical components used to couple adjacent vacuum chambers in the warm sectors of the LHC. Their primary functions are to ensure vacuum tightness, to accommodate small radial misalignments between chamber flanges, and to compensate for longitudinal thermal expansion/contraction of the Long Straight Sections during bakeout operations. Within the framework of...
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Aaron Gobeyn (Technical University of Darmstadt)18/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
Bulk niobium (Nb) is the standard material for superconducting radiofrequency (SRF) cavities, due to its high critical temperature and high critical magnetic field among pure metals. The performance of these cavities has, in recent years, approached their theoretical limits [1]. The superconductor-insulator-superconductor (SIS) multilayer approach offers
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an alternative by using a thin... -
Albert Hovhannisyan (Center for the Advancement of Natural Discoveries using Light Emission)18/05/2026, 16:00MC7.T14: Vacuum TechnologyPoster Presentation
The stress-strain state of titanium foils used for accelerator output windows was investigated with various foil thicknesses and titanium grades. Initial material data included deformation diagrams, densities, Young’s moduli, and Poisson’s ratios for each grade. Experimental studies were performed to validate the central displacements of Titanium Grade 2 foils. Measurements were conducted...
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Weiwen Chen (Institute of High Energy Physics)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The China Spallation Neutron Source (CSNS) accelerator, consisting of a $\rm H^-$ linac and a rapid cycling synchrotron (RCS), is undergoing an upgrade to increase the average beam power to 500~kW. At the CSNS linac, shorted-stripline beam position monitor~(BPM) determines beam position by averaging over the entire macro-pulse. However, significant intra-macropulse beam position fluctuations...
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Anna Radoslavova (European Organization for Nuclear Research, Goethe University Frankfurt)18/05/2026, 16:00MC1.A01: Hadron CollidersPoster Presentation
In the Large Hadron Collider (LHC), several beam diagnostic systems provide turn-by-turn and bunch-by-bunch position, enabling a precise characterization of the transverse beam spectra up to high frequency. Using these instruments, the presence of external excitations at 50 Hz harmonics have been observed to affect the beam motion. In this work, we combine these measurements to study the...
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Sen Yue (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A02: Lepton Circular CollidersPoster Presentation
To reach and maintain its maximum luminosity despite a beam lifetime well below 1 h, the Future Circular Lepton Collider (FCC-ee) relies on top-up injection. The present baseline scheme uses on-axis injection with a conventional one-turn orbit bump. This scheme was selected for the conceptual design study for its reliability and because it is expected to minimise background for the...
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Youpeng Xie (Institute of High Energy Physics, Chinese Academy of Sciences)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Beam Position Monitors (BPMs) are essential for the commissioning and stable operation of fourth-generation synchrotron light sources such as the High Energy Photon Source (HEPS). Building on the theoretical beam–electrode response of circular‑section button BPMs, we extract a set of channel‑specific coefficients from in‑situ BPM data. These coefficients remain nearly constant under varying...
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Guimei Wang (Brookhaven National Laboratory)18/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
The injector of the NSLS-II consists of a linear accelerator (LINAC) that accelerates the electron beam to 170 MeV, followed by a linac-to-booster (LTB) transport line and a booster synchrotron that further increases the beam energy to 3 GeV. The performance of LINAC and LTB is critical to achieve efficient and stable beam injection. Automated online tuning is an effective method to improve...
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Michele Bertucci (Istituto Nazionale di Fisica Nucleare)18/05/2026, 16:00MC7.T08: RF Power SourcesPoster Presentation
In this contribution we report on the operational experience gained with a commercial off-the-shelf solid-state RF power amplifier equipped with an embedded low-level RF (LLRF) control system, in use for the sub-harmonic buncher cavity of the HB2TF project at INFN LASA. We summarize the motivations behind adopting a turnkey solution, highlighting expected benefits in terms of reliability,...
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Mr Artur Krawczyk (European Spallation Source)18/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
The European Spallation Source (ESS) is undergoing its next technical commissioning run, with the goal of achieving first Beam On Target (BOT). This milestone requires the full superconducting linac—27 cryomodules consisting of 26 Spoke, 36 Medium‑Beta, and 20 High‑Beta cavities—to achieve nominal parameters. This paper presents a statistical study of the Cold Tuning System (CTS) based on data...
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Sara Morales Vigo (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A01: Hadron CollidersPoster Presentation
At the Large Hadron Collider (LHC) at CERN, nearly 3600 ionization chambers composing the Beam Loss Monitoring (BLM) system are distributed along the ring and at each collimator. They are responsible for protecting the machine against energy deposition originated from beam losses by requesting the beam extraction when the measured signals are above certain predetermined thresholds. The setup...
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18/05/2026, 16:001MC7.T37: Innovation ProcessesPoster Presentation
The Operational Sequencer is a software framework developed to automate complex and frequently executed high-level procedures that are essential to the operation of accelerator systems at the European Spallation Source (ESS). By transforming manual control room tasks into predefined sequences, the tool enhances process repeatability, reliability, and safety by reducing human error.
Designed...
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Riccardo De Maria (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A01: Hadron CollidersPoster Presentation
We present an update of the optics cycles foreseen during physics operation in the High-Luminosity LHC (HL-LHC) era.
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New optics around the upgraded ATLAS and CMS experiments are needed due to the new quadrupole layout and lower $\beta^*$. In addition, thanks to numerous studies and lessons learnt during Run 3, the entire machine's optics will be modified to improve key aspects such as machine... -
Riccardo De Maria (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A01: Hadron CollidersPoster Presentation
The HL-LHC will operate with very low $\beta^*$ and tight alignment constraints around the upgraded ATLAS and CMS experiments. An optimised commissioning time to reach the most pushed optics will be key to integrating significant luminosity already in the first years of operation.
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The contribution presents the status and perspectives of the solutions put in place to prepare machine models... -
Mr Leonard Thiele (University of Rostock)18/05/2026, 16:00MC1.A09: Muon Accelerators, Neutrino Factories, Muon CollidersPoster Presentation
The Muon Collider requires fast acceleration to preserve the intensity of the decaying muons. The current design uses a chain of four rapid-cycling synchrotrons (RCS), where tens of turns are used per ring to accelerate from 63 GeV to 5000 GeV. Because of the short muon lifetime, the design uses injection and extraction while the magnets are ramping (accelerating buckets). Due to the different...
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Maria Aquilina (University of Malta, European Organization for Nuclear Research)18/05/2026, 16:00MC1.A01: Hadron CollidersPoster Presentation
The main performance indicator of a particle collider is the integrated luminosity. It depends not only on operational efficiency, but also on a range of beam parameters to be optimised to enhance performance. It is common to operate a collider with decaying luminosity, due to beam burn-off. However, the planned luminosity upgrade of the LHC (HL-LHC) is based on luminosity levelling: a time...
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Weiling Huang (Institute of High Energy Physics)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
DC Current Transformers (DCCTs) are essential instruments for non-interceptive beam current measurement in particle accelerators. The zero-flux modulation principle demands exceptional symmetry between paired magnetic cores to achieve sub-$\mu$A offset stability. Conventional core matching based on static magnetic parameters provides only an engineering approximation, as it neglects the...
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Nikita Kuklev (Fermi National Accelerator Laboratory)18/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
PIP-II project will raise Fermilab Booster intensity and ramp rate. Beam losses will limit maximum power and are hard to simulate. Presently, Booster uses operator-guided empirical tuning - a challenging task due to high dimensionality, multiple objectives, critical safety constraints, and drifts. We developed a synergistic suite of Bayesian optimization (BO) and reinforcement learning (RL)...
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Ricardo Monroy-Villa (Johannes Gutenberg University Mainz)18/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
An optimized design of a Ferroelectric Fast Reactive Tuner (FE-FRT) capable of modulating high reactive power in 1.3 GHz superconducting radiofrequency (SRF) TESLA-type cavities at the Mainz Energy-Recovering Superconducting Accelerator (MESA) on sub-microsecond time scales is presented. To mitigate microphonics-induced detuning of up to ±25 Hz in these cavities, the FE-FRT employs low-loss...
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Dr Jean-Baptiste Lagrange (Science and Technology Facilities Council)18/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
Over the past four decades, the accelerator community has made substantial progress in advancing both normal-conducting and superconducting RF cavity design and fabrication technologies. As the global demand for new accelerator facilities continues to increase, the development of low-cost, high-efficiency RF cavities has become essential for ensuring the long-term sustainability of accelerator...
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Cristian Pira (Istituto Nazionale di Fisica Nucleare), Oscar Azzolini (Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro)18/05/2026, 16:00MC7.T35: Advanced Manufacturing Technologies for Accelerator ComponentsPoster Presentation
The performance of Superconducting Radio Frequency (SRF) cavities is critically dependent on surface quality. While Electropolishing (EP) has traditionally been the standard for achieving low-roughness surfaces on Niobium (Nb) and Copper (Cu) substrates, it relies on hazardous and corrosive acids. Since 2019, Legnaro National Laboratories (LNL) has developed an eco-friendly alternative: Plasma...
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Xing Yang (University of Science and Technology of China)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Abstract: The longitudinal density distribution of electron bunch-es is a critical parameter for evaluating the performance of storage rings. To meet the requirements for real-time, cost-effective, and flexible longitudinal diagnostics for the Hefei Advanced Light Facility (HALF), we have devel-oped a Time-Correlated Single Photon Counting (TCSPC) measurement system based on a general-purpose...
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Sara Casalbuoni (European X-Ray Free-Electron Laser)18/05/2026, 16:00MC7.T15: Technology: Undulators and WigglersPoster Presentation
This contribution describes the recent progress of the European XFEL superconducting undulators (SCUs) program. This includes: an industrially-produced NbTi-based SCU afterburner foreseen for one of the two hard X-ray lines; a prototype SCU module (S-PRESSO) in production by Bilfinger; two magnetic measurement test stands to perform quality assurance; and further development of SCU technology...
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Yuwen An (Institute of High Energy Physics, Spallation Neutron Source Science Center)18/05/2026, 16:00MC6.T22: Reliability, OperabilityPoster Presentation
The China Spallation Neutron Source（CSNS） is the first large-scale pulsed spallation neutron source in China and the fourth of its kind in the world. It is a large multidisciplinary user facility. The facility passed national acceptance and officially opened for operation in 2018. It has been in operation for seven years. During this period, the beam power has continually increased, and both...
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Jean-Luc Vay (Lawrence Berkeley National Laboratory)18/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligenceInvited poster
: On November 24, 2025, the U.S. government launched the Genesis Mission (https://genesis.energy.gov/), a national mission to accelerate science through artificial intelligence. As part of Genesis, the US DOE Multi-Office particle Accelerator Team (MOAT) project is a bold and cross-cutting effort to leverage the power of AI at DOE’s current and future particle accelerator facilities. MOAT’s...
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Matheus Velloso (Brazilian Synchrotron Light Laboratory, Universidade Estadual de Campinas (UNICAMP))18/05/2026, 16:00MC6.T04: Accelerator/Storage Ring Control SystemsPoster Presentation
In fourth-generation light sources such as SIRIUS, tight orbit tolerances require accurate knowledge of BPM offsets with respect to the magnetic center of nearby quadrupoles. This work presents the implementation and experimental validation, at the SIRIUS storage ring, of the Parallel Beam-Based Alignment (PBBA) method proposed by X.~Huang. This method allows the simultaneous calibration of...
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Dario Nicolosi (SAES Getters S.p.A.)18/05/2026, 16:00MC7.T14: Vacuum TechnologyPoster Presentation
Non-evaporable getter (NEG) pumps are being used to maintain ultra-high vacuum in the beamline of superconducting radio-frequency (SRF) accelerators, such as the Continuous Electron Beam Accelerator Facility (CEBAF) at Jefferson Lab. Because of the sensitivity of the performance of SRF cavities to particulate contamination, it is important to evaluate the integrity of the NEG material after...
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Giulia Nigrelli (European Organization for Nuclear Research, Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, Sapienza University of Rome)18/05/2026, 16:00MC1.A26: Colliders: Machine Detector InterfacePoster Presentation
The electron-positron Future Circular Collider (FCC-ee) is a proposed high-luminosity lepton collider which will operate at energies ranging from 45.6 to 182.5 GeV. Each beam will radiate up to 50 MW of synchrotron radiation power, whose disposal poses obvious challenges for the machine and for the experiments. The lattice design upstream of the interaction point employs weak dipoles, within...
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Nuria Catalan-Lasheras (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T08: RF Power SourcesPoster Presentation
Since a number of years, energy efficiency has become a priority for particle accelerators both in operation and under design. Klystrons and other RF sources have been the subject of revised design in order to decrease energy consumption and increase their beam to RF efficiency. However, ancillary systems like HV systems and electromagnets can be a non-negligible power sink and may spoil the...
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Yihao Gong (Shanghai Synchrotron Radiation Facility)18/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
To advance autonomous operation at the Shanghai Synchrotron Radiation Facility (SSRF), we developed a diagnostic agent using a locally deployed Qwen3-30B model. Unlike black-box predictors, this agent employs physics-informed context engineering by langgraph to emulate expert reasoning: it iteratively excludes healthy subsystems, identifies parameter drifts, and validates hypotheses by...
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Tobia Romano (Politecnico di Milano, Riga Technical University)18/05/2026, 16:00MC7.T35: Advanced Manufacturing Technologies for Accelerator ComponentsPoster Presentation
The utmost design freedom of additive manufacturing can be leveraged to fabricate complex particle accelerator components, such as the radiofrequency quadrupole (RFQ). However, the high surface roughness typical of as-printed parts represents a major barrier to the integration of additive manufacturing technologies into established fabrication workflows. This work investigates finishing...
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Ibon Bustinduy (ESS Bilbao), Juan Luis Muñoz (ESS Bilbao)18/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
The ARGITU RFQ at ESS-Bilbao is a 352.2 MHz, 4-vane RFQ that will
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accelerate protons from 45 keV to 3.0 MeV. The RF power comes from a
modulator/klystron by rectangular waveguides that end in coaxial lines
that are finished by the two loop power couplers. The couplers are made
of copper and no brazing has been used in their production. For this
reason, the vacuum/air window is made of... -
Fulvio Boattini (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A09: Muon Accelerators, Neutrino Factories, Muon CollidersPoster Presentation
The development of a power converter for the resistive magnets of the Muon Collider Rapid Cycling Synchrotron (RCS) represents one of the most critical challenges of the muon accelerator system, given the required peak power levels in the 50–100 GW range. To address this, a modular resonant converter is proposed, consisting of several hundred identical series-connected cells interleaved with...
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Renjun Yang (Institute of High Energy Physics)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The power upgrade of the China Spallation Neutron Source Phase II (CSNS-II) requires the Rapid Cycling Synchrotron (RCS) BPM system to operate under an extreme 107 dB ultra-wide dynamic range (20 mV to 50 V) and high signal power. The primary design challenges are mitigating thermal drift, suppressing reflections from impedance mismatch, and enhancing low-energy SNR.This paper presents the...
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Zhiyuan Zhang (Institute of Advanced Light Source Facilities, Shenzhen)18/05/2026, 16:00MC6.T05: Beam Feedback SystemsPoster Presentation
The Shenzhen Superconducting Soft X-ray Free Electron Laser (S3FEL) requires a high-quality electron beam with stable energy, bunch length, and arrival time to ensure efficient lasing. To maintain stringent beam quality, a comprehensive beam feedback system has been preliminarily designed, incorporating five dedicated feedback loops:
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1.Gun Feedback: Monitors bunch charge and arrival time... -
Dr Frédéric Bouly (Laboratoire de Physique Subatomique et de Cosmologie)18/05/2026, 16:00MC7.T36: SustainabilityPoster Presentation
The PERLE project aims to build a high power electron Energy Recovery Linac (ERL) demonstrator (5 MW) to develop and apply the energy recovery technique in a multi turn configuration. In an initial intermediate phase PERLE will operate in a single turn mode with a 5 mA beam at 89 MeV. In its final layout the machine will run in a three turn mode, delivering a 20 mA electron beam at 250 MeV....
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Jui-Che Huang (National Synchrotron Radiation Research Center)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The Taiwan Photon Source (TPS) booster synchrotron has been in routine operation since 2015, accelerating electron beams from 150 MeV to 3 GeV at a 3 Hz repetition rate. Ensuring beam stability during the energy ramp is essential, particularly through tune correction to mitigate particle loss associated with betatron resonances. Tune variations primarily arise from magnetic field...
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Ixone Angulo Vaquero (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A17: Colliders: High Intensity AcceleratorsPoster Presentation
The High-Intensity ECN3 (HI-ECN3) Project will upgrade the ECN3 underground experimental area in CERN’s North Area, to host the Beam Dump Facility (BDF) and the SHiP experiment. The required refurbishment of underground infrastructure and associated surface facilities is scheduled for Long Shutdown 3 (LS3), while installation of BDF and SHiP is foreseen in 2030 and beam commissioning of the...
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Jian Chen (Shanghai Synchrotron Radiation Facility)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Accurate measurement of electron bunch length is critical for the performance optimization of X-ray free-electron lasers (FELs). Conventional techniques face challenges in achieving simultaneous single-shot, non-destructive, and femtosecond-level resolution. This paper presents a novel diagnostic method based on quantum wireless sensing using Rydberg atoms. The principle utilizes the extreme...
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Mattia Stefanelli (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A01: Hadron CollidersPoster Presentation
In 2026, the Large Hadron Collider will conclude its final operational run, before being upgraded to the High-Luminosity Large Hadron Collider during the following long-shutdown. Originally conceived with a nominal beta* of 0.55m in both planes, over successive years, its optics design has been steadily pushed beyond those initial goals, with round optics down to 0.25m/0.25m (2018), and flat...
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Josef Sestak (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T14: Vacuum TechnologyPoster Presentation
For the High-Luminosity LHC (HL-LHC) era following the third long shutdown (LS3), new generations of experimental vacuum chambers will be installed in the ATLAS, ALICE, CMS, and LHCb experiments. These chambers, located at the interaction points, ensure the required beam vacuum conditions while minimizing the impact of chamber materials on detector performance. The HL-LHC upgrade imposes...
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Chunguang Jing (Euclid Techlabs (United States))18/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
Fast tuning of SRF cavities at high power is critically important for applications like correction of microphonics, transient beam loading and fast frequency switching. With the talk, we present recent developments of the active elements for the high-power Ferroelectric Fast Reactive Tuners (FRT)*. This technique has now become practically feasible due to the recent development of a new...
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David Sagan (Cornell University (CLASSE))18/05/2026, 16:00MC6.T33: Online Modelling and Software ToolsPoster Presentation
The Particle Accelerator Language Standard (PALS) is a community effort to create an open standard to promote lattice information exchange for particle accelerators. PALS development is a community-wide international effort involving accelerator physicists from multiple institutions. While it started as a lattice standard for beam dynamics simulations, it is now being extended to support other...
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Weiwen Chen (Institute of High Energy Physics, Chinese Academy of Sciences)18/05/2026, 16:00MC6.T05: Beam Feedback SystemsPoster Presentation
The Rapid Cycling Synchrotron (RCS) of the China Spallation Neutron Source (CSNS) is planned to upgrade its beam power from the current 100 kW to 500 kW in the CSNS-II phase. However, significant beam-intensity-dependent transverse instability has already been observed during routine 100 kW operation. As the beam power increases further, this instability is expected to become much stronger. To...
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Ramy Cherif (GSI Helmholtz Centre for Heavy Ion Research)18/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
Additive manufacturing enables compact accelerating
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structures with complex internal features such as inte-grated cooling channels. Within the Resonators Additively Constructed for Experiments project at GSI, a 3D-printed 704.4 MHz CH cavity was developed as a compact high-frequency H-mode prototype. This paper reports on the progress from the first low-level radio-frequency (RF)... -
Jacqueline Keintzel (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A02: Lepton Circular CollidersPoster Presentation
Precise optics measurements will be crucial for commissioning and optimising the Future Circular electron-positron Collider, FCC-ee, across its full energy range. To prepare for this challenge, simulation studies have been performed to evaluate the accuracy and robustness of Turn-by-Turn (TbT) based optics diagnostics applied to the FCC-ee. A central element of this effort is the use of an...
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Weihong Huang (Tsinghua University)18/05/2026, 16:00MC8.A28: Applications: Industrial AcceleratorsPoster Presentation
Relativistic electron beam pulse compression can enhance the beam current intensity within the pulse and generate higher peak current, showing significant potential for applications such as FLASH radiotherapy and wakefield acceleration. This paper proposes a proof-of-principle experimental design for a solenoid-based electron beam pulse compression scheme. The core device of the experiment,...
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1371. Proposed collimation layout for the FCC-ee with local chromaticity correction optics (MOP1052)Giovanni Iadarola (European Organization for Nuclear Research)18/05/2026, 16:00MC1.T19: Colliders: CollimationPoster Presentation
The Future Circular electron–positron Collider (FCC-ee), with a circumference of approximately 90 km, is designed to push both the luminosity and energy frontiers for high-brightness lepton beams. The unprecedented stored beam energy, reaching up to 17.7 MJ -- around two orders of magnitude greater than in any previous lepton collider -- poses major challenges for safe operation. Uncontrolled...
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Lorenzo Bortot (European Synchrotron Radiation Facility)18/05/2026, 16:00MC7.T10: Superconducting MagnetsPoster Presentation
The European Synchrotron Radiation Facility (ESRF) is developing a compact high-temperature superconducting (HTS) wiggler for beamline BM18, consisting of three pole pairs delivering up to 1.58 T, with variable field capability within a minimal footprint. ReBCO HTS tapes enable high current densities and allow current-controlled field scans, eliminating bulky mechanical phase shifters.
The...
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Jens Voelker (Helmholtz-Zentrum Berlin für Materialien und Energie), Jordi Marcos (ALBA Synchrotron (Spain))18/05/2026, 16:00MC7.T34: Permanent MagnetsPoster Presentation
Within the Research Facility 2.0 (RF2.0)* project, one of the objectives is the development of novel permanent-magnet technologies and refurbishment strategies aimed at reducing energy consumption in accelerator facilities. In this context, ALBA, ELYTT, and HZB are jointly developing a tunable quadrupole prototype based on permanent magnets, conceived as a demonstrator for next-generation,...
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Antonio De Santis (Istituto Nazionale di Fisica Nucleare)18/05/2026, 16:00MC1.A04: Colliders: Circular Accelerators and Storage RingsPoster Presentation
The PADME-X17 experiment is searching for a light dark matter candidate. The experiment would greatly benefit from the availability of a dedicated beam with long pulse duration and minimal instantaneous current. In this contribution, a third-order resonant slow-extraction scheme is considered, starting from the present lattice of the DAFNE damping ring. This solution, already integrated with...
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Sung-Woo Lee (Oak Ridge National Laboratory)18/05/2026, 16:00MC6.T27: Instrumentation: Low Level RFPoster Presentation
The RF Test Facility (RFTF) at the Spallation Neutron Source (SNS) is used for RF conditioning of components such as ceramic windows and couplers prior to their installation in charged-particle accelerators. This process involves exposing components to high-power RF fields and thermal cycling to improve performance and remove impurities. To automate and optimize this process, a Python-based...
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Marc-Hervé Stodel (Grand Accélérateur National d'Ions Lourds)18/05/2026, 16:00MC7.T10: Superconducting MagnetsInvited poster
In order to achieve optimal performance in terms of transmission and separation for the S3 spectrometer, the project team decided to design superconducting magnets integrating 11 magnetic functions in a single cryostat. There are seven of these magnets, called Superconducting Multipole Triplets, in the spectrometer, and they operate at liquid helium temperature. These are unique objects with...
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Dominika Sadowska (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T14: Vacuum TechnologyPoster Presentation
The HL-LHC project is currently in the fabrication and assembly phase for numerous components and systems, in particular the new beam-screen assemblies to be installed inside the upgraded final-focusing superconducting magnets operating at 1.9 K. These complex beam screens integrate tungsten absorbers and exist in two variants: the Q1 and Q2 types, with absorber thicknesses of 16 mm and 6 mm,...
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Michele Bertucci (Istituto Nazionale di Fisica Nucleare, Laboratori Acceleratori e Superconduttività Applicata)18/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
A joint LASA–Fermilab activity is in progress to study the impact of key surface processing steps on the performance of LB650 superconducting cavities in view of future series production. Among the several cavity preparation steps, electropolishing (EP) and mid-temperature heat treatment are considered the most critical and require specific optimization for the LB650 geometry. Single-cell and...
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Xing Yang (University of Science and Technology of China)18/05/2026, 16:00MC6.T05: Beam Feedback SystemsPoster Presentation
The Hefei Advanced Light Facility (HALF) is designed to generate and operate with a beam current of up to 350 mA while maintaining the beam emittance at the diffraction-limited level. The bunch-by-bunch feedback system serves as a critical tool for suppressing beam instabilities, requiring feedback control targeting the position oscillations of each bunch. To meet this demand, the engineering...
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Yongtao Liu (Xihua University)18/05/2026, 16:00MC8.A28: Applications: Industrial AcceleratorsPoster Presentation
Electron linear accelerators(linacs) have been widely used in industrial Non-Destructive Testing (NDT) and cargo scanning for decades, exploiting their X-ray radiography features. The focal spot size is a critical parameter of an X-ray source, where a smaller focal spot size generally yields higher image resolution. To enhance system image resolution, Chengdu Elekom Vaccum Electron Technology...
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Kate Taylor (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A02: Lepton Circular CollidersPoster Presentation
The betatron and momentum collimation system of the the Future Circular Collider (FCC-ee) is essential to isolate losses away from the experiments and other machine elements, thus reducing the radiation background in the experiments, and avoiding damage to the machine in case of accidental beam losses. The primary and secondary collimators of the collimation hierarchy, employed to scatter halo...
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Kate Taylor (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A02: Lepton Circular CollidersPoster Presentation
In a high-energy lepton collider such as the Future Circular Collider (FCC-ee) at CERN, several phenomena create a challenging radiation environment for accelerator components and equipment including cables and electronics. This paper examines synchrotron radiation (SR), dominating at the highest beam energies (ttbar) for two different optics schemes.
Recent developments in the design of...
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Vincent Schoefer (Brookhaven National Laboratory)18/05/2026, 16:00MC1.A30: Colliders: Polarized beamsPoster Presentation
One of the greatest challenges for the EIC’s proposed Rapid Cycling Synchrotron will be to achieve high polarization transmission to 18 GeV. While SVD based orbit smoothing should be sufficient to achieve over 99% polarization transmission up to 10 GeV, the growth in the strength of residual imperfection spin resonances make achieving polarization transmission of 90% and above to 18 GeV more...
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Logan Knudson (University of California, Davis)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The UC Davis Crocker Nuclear Laboratory (CNL) operates a 76-inch isochronous cyclotron dating to the 1960s, with limited internal beam diagnostic instrumentation. Direct measurements of the Cyclotron beam are challenging due to the harsh environment, including high radiation, strong magnetic fields, RF interference, and spatial constraints. A novel beam probe has been developed for...
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Auralee Edelen (SLAC National Accelerator Laboratory)18/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
Characterizing the full 6-dimensional phase-space distribution of beams from the LCLS-II photoinjector is essential for understanding and optimizing downstream accelerator performance. Long-term monitoring of this distribution is equally important for detecting drifts in machine state and implementing timely corrective actions. Continuous 6D characterization during routine operation demands...
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Yixuan Luo (Tsinghua University)18/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
Accurate acquisition of the longitudinal phase space distribution is crucial for synchrotron optimization, but traditional tomography requires minutes per reconstruction, preventing real-time diagnostics. To resolve this, we propose a novel spatio-temporal neural network integrating 1D Convolutional Neural Networks (CNN) and Transformers. This hybrid model achieves end-to-end continuous...
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Xiaohan Lu (Institute of High Energy Physics)18/05/2026, 16:00MC6.T33: Online Modelling and Software ToolsPoster Presentation
To meet the beam commissioning requirements of the High Energy Photon Source (HEPS), a new pure-Python framework named Pyapas was developed, serving as the foundation for all high-level applications (HLAs) at HEPS. Beam commissioning of the Linac began on March 9, 2023, where the HLAs performed exceptionally well, enabling the Linac to achieve its design specifications and pass acceptance. By...
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Xianghe Fang (Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati)18/05/2026, 16:00MC7.T24: Technology: Timing and SynchronizationInvited poster
The plasma wakefield acceleration is becoming the most promising acceleration scheme because of its high accelerating gradient and compactness, but it also suffers from unstable operation since the acceleration is accomplished in a short, steep and nonlinear gradient region. This puts forward a very strict synchronization requirement on the subsystems of the entire facility. For the...
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Keng-Hao Hsu (National Synchrotron Radiation Research Center)18/05/2026, 16:00MC6.T22: Reliability, OperabilityPoster Presentation
In late 2024, the vibration monitoring system at the Taiwan Photon Source (TPS) was upgraded to enhance stability and usability. The system now includes beamline-floor measurement points and a central measurement center for station management, data export, automated reporting, and web-based access to real-time vibration levels and spectra. During more than a year of routine operation, issues...
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Paul Jurj (Imperial College London)18/05/2026, 16:00MC1.A09: Muon Accelerators, Neutrino Factories, Muon CollidersPoster Presentation
The muon collider has great potential for enabling high-luminosity multi-TeV lepton–
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antilepton collisions provided low-emittance, high-intensity muon beams can be
produced. Ionization cooling is the proposed technique to achieve the required muon
beam emittance. The International Muon Collider Collaboration aims to demonstrate the
integration and reliable operation of a 6D ionization... -
Jui-Che Huang (National Synchrotron Radiation Research Center)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The TPS is a newly constructed 3-GeV third-generation synchrotron light source featuring ultra-high photon brightness with extremely low emittance. The stripline electrodes are adopted to replace magnet shakers on the booster synchrotron considering more power strength to excite beam to extract tune. Agilent arbitrary signal generator would provide band-limited, strength-adjustable excite signal.
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Amaia Villa (Tekniker), Andoni Egurrola Areta (Tekniker)18/05/2026, 16:00MC7.T14: Vacuum TechnologyPoster Presentation
Maintenance in hostile environments where human access is limited or prohibited requires remotely operated systems capable of delivering high precision, reliability, and minimal setup time to ensure safe and efficient operation. Tekniker addresses these challenges through its Remote Handling specialization line, developing systems able to perform accurate mechanical tasks within highly...
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Antoine WAGRET QUATROMME (Grand Accélérateur National d'Ions Lourds)18/05/2026, 16:00MC7.T10: Superconducting MagnetsPoster Presentation
In order to achieve optimal performance in terms of transmission and separation for the S3 spectrometer, the project chose to design superconducting magnets integrating 11 magnetic functions in a single cryostat. There are seven of these magnets, called Superconducting Multipole Triplets, in the spectrometer. The compactness of these magnets makes them remarkable and unique, but has led to...
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Dr Shane Koscielniak (TRIUMF)18/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
The static and dynamic Lorentz force detuning (LFD) derive from the sum of many mechanical modes and their interplay with EM radiation pressure. The LFD may give rise to instabilities in which the EM resonance frequency moves away from the “set point” value. The usual analytic theory for the oscillatory instability, and its threshold, are for a single, isolated mechanical mode; not a sum. We...
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Alex Hinton (ASTeC, STFC Daresbury Laboratory, Cockcroft Institute)18/05/2026, 16:00MC7.T34: Permanent MagnetsPoster Presentation
The Hybrid Electromagnet-Permanent Magnet Tuneable Optics magnet has been designed and built as part of the I.Fast collaboration as an energy saving alternative to traditional resistive electromagnets. The prototype magnet has been designed to meet the magnetic field requirements of the combined function dipole-quadrupole (DQ) magnets required for the Diamond-II upgrade. The prototype contains...
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Silvia Verdu-Andres (Brookhaven National Laboratory)18/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
The interaction region (IR) crab cavity system is a special RF system designed to compensate for the luminosity loss caused by the 25 mrad crossing angle at the interaction point (IP) of the Electron-Ion collider (EIC). The configuration includes six crab cavities in the Hadron (proton or ion) Storage Ring (HSR) - four operating at 197 MHz and two at 394 MHz - installed on each side of the IP,...
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Andrea Pisent (Istituto Nazionale di Fisica Nucleare), Francesco Grespan (Istituto Nazionale di Fisica Nucleare)18/05/2026, 16:00MC7.T31: Subsystems, Technology and ComponentsPoster Presentation
The IFMIF DONES CW RFQ is feed by 8 RF power couplers for a total power capability of 1.6MW. A new set of couplers is going to be produced by INFN as backup solution for long term LIPAC operation and as first candidate for the IFMIF DONES RFQ. The couplers are equipped with cooled brazed alumina RF window. The same RF window design will be used for SPES RFQ.
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The physical design of the RF... -
Lina VALLE (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T08: RF Power SourcesPoster Presentation
The FCC-ee high-energy booster RF system consists of 112 superconducting cavities at 800 MHz for the operation modes at Z, WW, and H(ZH) energies, with an additional 408 cavities for the t t̄ stage. The first set of working points requires a wide total voltage range from 50 MV to 2 GV. To cover this huge range, Reverse Phase Operation (RPO) will be employed. It groups the cavities into...
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Micha Dehler (Paul Scherrer Institute)18/05/2026, 16:00MC7.T14: Vacuum TechnologyPoster Presentation
We report on the measurement of the surface impedance of thin sub-micron non-evaporable getter (NEG) coatings on a copper substrate, as used for distributed pumping in the vacuum system of the Swiss Light Source upgrade (SLS 2.0). Given the low electrical conductivity of NEG, a sub micron thickness with well known properties is required to avoid heat up and beam instabilities. Measurement...
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Francesco Grespan (Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro)18/05/2026, 16:00MC7.T31: Subsystems, Technology and ComponentsPoster Presentation
Thin titanium coatings were deposited on alumina RF windows at CERN to reduce the secondary electron emission yield. The deposition process was optimized to ensure uniform coverage of the components used in high-power RF systems. Witness samples were characterized to assess their suitability for accelerator applications. Surface resistivity was measured under controlled conditions, while the...
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Rachel Margraf-O'Neal (Argonne National Laboratory)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
A nanopatterned microbunching collaboration has been formed to test the production of electron microbunches by rotating transverse beamlets into the longitudinal plane using the emittance exchange (EEX) beamline of the Argonne Wakefield Accelerator (AWA).-* This mechanism has been suggested, such as by the Compact X-ray Free-Electron Laser (CXFEL) group at Arizona State University, to hold...
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Tirsi Prebibaj (École Polytechnique Fédérale de Lausanne)18/05/2026, 16:00MC1.A02: Lepton Circular CollidersPoster Presentation
The control of nonlinear beam dynamics is essential for achieving the luminosity targets of FCC-ee, particularly in the presence of strong beam–beam interactions and machine imperfections. Resonance Driving Terms (RDTs) provide a systematic framework to characterize nonlinear dynamics and quantify the strength of resonances excited by nonlinear magnetic elements in the lattice. This...
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Gaël Sattonnay (Université Paris-Saclay, CNRS/IN2P3, IJCLab)18/05/2026, 16:00MC7.T14: Vacuum TechnologyPoster Presentation
Multipacting and electron cloud formation remain major limitations for the performance of modern particle accelerators. In superconducting radio-frequency (SRF) cavities, multipacting can prevent stable cavity operation and restrict achievable accelerating gradients. In positively charged particle machines such as the LHC, the build-up of electron clouds results in beam instabilities, vacuum...
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Xinru Gao (University of Science and Technology of China)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
This work presents a comprehensive simulation study aimed at validating key optical models for X‑ray pinhole cameras and Fresnel zone‑plate (FZP) imaging lines designed for the Hefei Advanced Light Faclilty (HALF). Accurate transverse beam diagnostics are essential for beamline performance, and simplified approximations—such as the square‑aperture pinhole model, Gaussian point‑spread function...
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Paul Jurj (Imperial College London)18/05/2026, 16:00MC1.A11: Colliders: Beam CoolingPoster Presentation
The muon collider has great potential for enabling high-luminosity multi-TeV lepton–antilepton collisions provided low-emittance, high-intensity muon beams can be produced. Ionization cooling is the proposed technique to achieve the required muon beam emittance. The rectilinear cooling lattice used to compress the six-dimensional (6-D) phase-space volume of the beam comprises solenoids for...
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WONJONG CHANG (University of Warwick, STFC Rutherford Appleton Laboratory)18/05/2026, 16:00MC1.A09: Muon Accelerators, Neutrino Factories, Muon CollidersPoster Presentation
nuSTORM (neutrinos from Stored Muons) is a future-generation accelerator-based neutrino facility that is currently being designed to have %-level flux uncertainty which obtains neutrinos from muon decay in a storage ring. nuSTORM will be able to measure ν-A cross-section with great precision for both electron and muon neutrinos. The storage ring will store muons with a momentum range of 1–6...
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Giulia Nigrelli (European Organization for Nuclear Research, Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, Sapienza University of Rome)18/05/2026, 16:00MC1.A02: Lepton Circular CollidersPoster Presentation
SuperKEKB is an electron-positron collider providing beam to the Belle-II experiment. The design luminosity has not yet been achieved, partly due to limited injection efficiency in both rings, which limits the achievable beam current. In addition, the injection process generates significant background in the Belle-II detector, requiring vetoes during data taking that reduce the detector...
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Tirsi Prebibaj (École Polytechnique Fédérale de Lausanne)18/05/2026, 16:00MC1.A02: Lepton Circular CollidersPoster Presentation
The control of the optics in the Future Circular electron–positron Collider (FCC-ee) is a challenging but crucial task for meeting its performance goals. Lattice imperfections, such as magnet misalignments and field errors, introduce distortions in the phase advance between the Interaction Points (IPs), which could affect the Dynamic Aperture (DA) and degrade luminosity, particularly in the...
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Anthony Harrison (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T14: Vacuum TechnologyPoster Presentation
The series of SMAUG experiments performed at the HiRadMat facility within the CERN accelerator complex investigated the performance limits of materials suitable for particle beam windows under extreme proton beam conditions. Materials including; Glassy Carbon, Beryllium (grades I-220-H, S-200-FH, PF-60®), and Silicon Nitride (Si₃N₄) were exposed to 440 GeV/c proton beams with total intensities...
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Renjun Yang (Institute of High Energy Physics)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
In the upgraded accelerator of the China Spallation Neutron Source Phase II (CSNS-II) project, several multi-channel beam diagnostic detectors are installed, including a Ionization Profile Monitor (IPM) for measuring the injection beam profile and a Multi-Wire Profile Monitor for measuring the target beam profile. In the China Spallation Neutron Source (CSNS), similar multi-channel detectors...
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Donish Khan (SLAC National Accelerator Laboratory)18/05/2026, 16:00MC6.T04: Accelerator/Storage Ring Control SystemsPoster Presentation
In this paper, we present the orbit response matrix (ORM) measurements for the SPEAR3 booster obtained using a set of Libera Spark ERXR beam-position processors. The turn-by-turn acquisition capability of these processors enables continuous tracking of the beam trajectory throughout the full energy ramp prior to injection into SPEAR3. This dataset provides sufficient resolution to extract the...
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Giovanni Iadarola (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A30: Colliders: Polarized beamsPoster Presentation
Precise modelling of spin dynamics is essential for the energy-calibration programme of the FCC-ee collider, where resonant depolarization measurements require accurate predictions of polarization buildup and of the spin-tune response to machine errors. We present spin modeling capabilities recently implemented in the Xsuite simulation framework, enabling high-performance six-dimensional...
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Joyce Samantha Romero Jiménez (University of the Basque Country)18/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
Sustainability is a key issue for both current and future particle accelerators. Superconducting RF cavities with high loaded quality factors play an important role in not only lowering the energy demands of particle accelerators but also the initial investment in RF amplifiers. But the narrow bandwidth associated with this high loaded quality, makes the need to minimize cavity detuning...
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Cristian Pira (Istituto Nazionale di Fisica Nucleare)18/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
The next SRF2027 conference will be organized by INFN and will be held from Sunday, June 27 to Friday, July 2 at the Padova Congress in Padua, Italy, with tutorial sessions at the University of Milan from June 24 to 26. Guided tours of the INFN National Laboratories in Legnaro and INFN LASA in Segrate will be organized during the event.
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The SRF conference series has long provided a vibrant... -
Mr Pol Solans (ALBA Synchrotron (Spain))18/05/2026, 16:00MC7.T08: RF Power SourcesPoster Presentation
ALBA is a 3rd generation synchrotron light source and is member of the RF2.0 project, which aims to reduce the carbon footprint of this kind of large research facilities by improving its efficiency, reliability and operational sustainability. In this contribution, we present the work done together with our partner COMMTIA, that has developed the Adaptive Power and Digital Control (APDC) for a...
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Dr Andrey Mishin (Varex Imaging (United States)), Rich LaFave (Varex Imaging (United States)), Stanislav Proskin (Varex Imaging (United States))18/05/2026, 16:00MC8.A28: Applications: Industrial AcceleratorsPoster Presentation
At Varex Imaging Corporation, High Energy Systems (HES) Department staff with help and support of our Production and Imaging groups continue adding new features to our LINATRON linear accelerator (LINAC) systems and transitioning new developments to our products. HES is at the final stages of productizing our usual LINATRONs, equipped with our new, in-house developed and built Accelerator Beam...
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Alberto Bellelli (European Organization for Nuclear Research, TU Wien)18/05/2026, 16:00MC7.T09: Normal Conducting MagnetsPoster Presentation
To ensure precise control of field quality in normal-conducting accelerator magnets, it is essential to develop models that accurately represent magnetic hysteresis during operational cycles. This study focuses on the dipole magnets of the CERN Super Proton Synchrotron (SPS) and investigates how variations in operational cycles produce different hysteresis and dynamic patterns in the...
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Jordi Marcos (ALBA Synchrotron (Spain))18/05/2026, 16:00MC7.T09: Normal Conducting MagnetsPoster Presentation
The upgrade project of the ALBA Synchrotron Light Source is gaining momentum following the official approval of the required funds at the end of 2025. The design of the magnets for the new ALBA II storage ring began in 2021 with the launch of a comprehensive prototyping program aimed at developing and validating the various magnet types required by the new multi-bend achromat (MBA) lattice....
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Thorsten Hellert (Lawrence Berkeley National Laboratory)18/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
Operating large-scale scientific facilities requires coordinating diverse subsystems, translating operator intent into precise hardware actions, and maintaining strict safety oversight. Language-model agents offer a natural interface for these tasks, but most existing approaches are not yet reliable or safe enough for production use. We introduce Osprey, a framework that wraps a coding agent...
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Dariusz Bocian (Institute of Nuclear Physics, Polish Academy of Sciences), Jacek Swierblewski (Institute of Nuclear Physics, Polish Academy of Sciences)18/05/2026, 16:00MC7.T31: Subsystems, Technology and ComponentsPoster Presentation
The European Spallation Source (ESS), as one of the complex accelerators require installation and commissioning of many systems and components. One of them is the accelerator which is composed with the cryomodules uses to accelerate of the particles. Taking into account that ESS is one of the most technological advanced accelerators in the world we can expect also that accelerator is very...
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Daniele Sertore (Istituto Nazionale di Fisica Nucleare, Laboratori Acceleratori e Superconduttività Applicata)18/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
INFN LASA started an R&D activity dedicated to the development of knowledge needed to understand how to improve SRF cavity performances to reach High Q and High G values to accomplish the sustainability and cost reduction requests, as needed for the future large particle accelerators. This R&D activity, funded by INFN, is also enriched by synergies with other LASA activities as PIP-II low beta...
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Vincent Schoefer (Brookhaven National Laboratory)18/05/2026, 16:00MC1.A04: Colliders: Circular Accelerators and Storage RingsPoster Presentation
The spin-preserving Rapid Cycling Synchrotron (RCS) is an integral component of the Electron-Ion Collider (EIC) complex. It will accelerate 750 MeV electrons from the Beam Accumulator Ring (BAR) to 5, 9, or 18 GeV, as required by the Electron Storage Ring (ESR), all while preserving the polarization. We discuss here the design considerations and the current optics solution, including...
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Takeshi Toyama (High Energy Accelerator Research Organization)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Calibration with stretched wire on a test bench is widely used for beam position monitors. Addressing impedance mismatches at both ends of the system is difficult, especially at high frequencies exceeding 100 MHz. Tapered pipes are sometimes utilized for better impedance matches which is difficult for applying to the BPMs, because the wire position moves in horizontal and vertical directions....
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Marcin Patecki (Warsaw University of Technology)18/05/2026, 16:00MC1.T19: Colliders: CollimationPoster Presentation
The Large Hadron Collider (LHC) at CERN operates with lead-ion beams for about one month each year, requiring a high-performance collimation system to protect the machine from beam losses. The baseline ion-collimation scheme includes crystal collimation. In 2025, additional ion runs were carried out using oxygen and neon beams, enabling the first experimental comparison of collimation...
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Roberto Cala' (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A01: Hadron CollidersPoster Presentation
During the 2024 and 2025 LHC proton-proton runs, the LHCb experiment, following its upgrade, achieved a substantial increase in delivered luminosity compared to previous years, exceeding the level of 10 fb-1 per year. While this enhancement greatly expands LHCb’s physics reach, it also leads to a marked rise in radiation levels in the experimental insertion region, originally designed for a...
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Mr Pol Solans (ALBA Synchrotron (Spain))18/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
ALBA, a 3rd generation synchrotron light source in Barcelona, Spain, is currently preparing its upgrade to the 4th generation low emittance machine ALBA II. As part of this upgrade, an active normal conducting harmonic RF system will be installed to improve beam lifetime. However, discountinuities in the filling pattern, such as ion clearing gaps, induce RF cavity voltage variations along the...
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Zhicheng Huang (University of Science and Technology of China)18/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
Asterix project a worldwide collaboration involving SLAC, CERN, INFN-LNF, KEK, and Tsinghua University, focused on the study and optimization of advanced X-band (11–12 GHz) accelerating structures. These structures, made of hard copper to ensure better high-gradient performance compared to soft copper, employ various geometries such as open-type cells and use alternative, braze-free joining...
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Helene Guerin (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A01: Hadron CollidersPoster Presentation
The High-Luminosity Large Hadron Collider (HL-LHC) will mark a new phase of LHC operation, aiming to reach an integrated luminosity of 3000 fb$^{-1}$ over 10 years of operation. A key element to achieve the target luminosity is the beam intensity increase, nearly doubling the number of protons per bunch compared to the initial LHC design. This increases the load on the collimators protecting...
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18/05/2026, 16:00MC1.A01: Hadron CollidersPoster Presentation
Besides its proton–proton physics programme, the LHC operates with 208-Pb ion beams colliding in its four experiments. At the interaction point, bound-free pair production (BFPP), occurring when an electron produced in an electromagnetic interaction is captured by one of the colliding nuclei, is one of the most critical processes in terms of beam losses. In fact, BFPP leads to the creation of...
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Shalva Bilanishvili (Istituto Nazionale di Fisica Nucleare)18/05/2026, 16:00MC1.A10: Colliders: Damping RingsPoster Presentation
The design of the FCC-ee damping ring is progressing,
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with ongoing optimisation of beam parameters and key accelerator systems.
Accordingly, the coupling impedance model is updated to reflect the latest vacuum chamber and hardware layouts.
In parallel, the estimates of collective effects and
impedance-related instabilities are being refined.
This paper presents the current wakefield and... -
Lise Pauwels (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A02: Lepton Circular CollidersPoster Presentation
The Future Circular electron-positron Collider (FCC-ee) is a design study for a 90.7 km circumference high-luminosity and high-energy e+e- collider. In electron and positron machines, the Touschek effect can cause large transverse-to-longitudinal momentum exchange, leading to particle losses that can limit the beam lifetime and produce distinct beam loss patterns. A quantitative assessment of...
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Dr Marco Modica (Elettra-Sincrotrone Trieste S.C.p.A.)18/05/2026, 16:00MC7.T10: Superconducting MagnetsPoster Presentation
All third generation synchrotron radiation sources are currently planning upgrades toward diffraction-limited storage rings with brightness close to the theoretical limit and higher hard-x-ray production. In these new photon sources superconducting bending (superbending) magnets may play an important role to extend the useful photon energy range. The radiation produced by superbending magnet...
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Ms Mahazbeen Sayed (Rajiv Gandhi Technical University)18/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
Abstract: A SCILAB Xcos model has been redesigned using Super Blocks to simulate electron trajectories in different undulator schemes. The use of Super Blocks simplifies the model structure, reduces configuration complexity, and enhances modularity for further extension. This improvement allows easy modification of parameters and undulator configurations without rebuilding the complete model....
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Nikita van Gils (European Organization for Nuclear Research, University of Groningen)18/05/2026, 16:00MC1.A02: Lepton Circular CollidersPoster Presentation
A new Energy Compression System (ECS), consisting of four RF cavities, was installed in the SuperKEKB electron transfer line (BTe) during the 2025 summer shutdown. Optimising BTe performance using full multi-turn injection simulations is computationally demanding. To accelerate this process, we compare the beam tracked through BTe — including the ECS — to the dynamic aperture of the...
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Romain Ganter (Paul Scherrer Institute)18/05/2026, 16:00MC7.T14: Vacuum TechnologyPoster Presentation
After more than two decades of user operation, the Swiss Light Source (SLS) entered a major upgrade phase in October 2023, targeting a 40-fold reduction of electron-beam emittance via a new 7-bend achromat lattice at 2.7 GeV. The vacuum system, central to machine performance, was completely rebuilt to meet the stringent requirements imposed by the compact lattice. The new storage ring vacuum...
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Frank Zimmermann (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A01: Hadron CollidersPoster Presentation
At the proposed future circular hadron collider, FCC-hh, the strong synchrotron radiation emitted inside the cold superconducting magnets represents a significant heat load, which is likely to limit the total beam current. This contribution discusses a new approach, namely synchrotron radiation power levelling: The idea is to adjust the beam energy during a physics store, either continually or...
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Zahid Mamud (The Assam Royal Global University)18/05/2026, 16:00MC8.U02: Materials Analysis and ModificationPoster Presentation
The global transition to sustainable energy demands validation of unconventional lithium reservoirs, particularly pyrite (FeS₂) within organic-rich black shales (Bhattacharya et al., 2024). This study proposes the application of Synchrotron X-ray Fluorescence (XRF), an accelerator-based, high-resolution materials characterization technique, to investigate sediment-hosted lithium enrichment in...
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Thomas Banks (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T21: InfrastructuresPoster Presentation
The Search for Hidden Particles (SHiP) is a new high-intensity fixed-target experiment to be located within the Experimental Cavern North 3 (ECN3) at CERN’s North Area, utilising a 400 GeV proton beam from the SPS. The construction of a Beam Dump Facility (BDF) target complex is required for the successful operation of SHiP. It comprises an underground target station within the Tunnel Target...
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Tania de Melo Mendonca (Tera-Care Foundation)18/05/2026, 16:00MC7.T20: Technology: Targetry and DumpsPoster Presentation
Astatine-211 (At-211) is a highly promising radionuclide for Targeted Alpha Therapy, particularly for the treatment of metastatic cancers. However, its clinical adoption remains limited by production challenges. At-211 is typically produced by irradiating bismuth targets with 28-30 MeV alpha particles. Conventional cyclotrons are commonly used for this purpose, although their beam currents...
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xiao qu (University of Science and Technology of China)18/05/2026, 16:00MC6.T04: Accelerator/Storage Ring Control SystemsPoster Presentation
Maintaining a constant phase difference between the reference (Ref) and cavity voltage sampling (Pt) signals is critical for stable operation of the Hefei Light Source (HLS) storage ring's RF system. This requires high-precision real-time phase detection capable of identifying lead or lag, to quickly restore the preset phase after startup or recovery, and to maintain the relationship between...
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Maurizio Vretenar (European Organization for Nuclear Research), Prof. Toms Torims (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T37: Innovation ProcessesPoster Presentation
Next-generation particle accelerators demand innovative technologies able to meet the performance and sustainability requirements of particle physics and applied science, while ensuring high efficiency and reduced costs for industrial and societal applications.
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The I.FAST (Innovation Fostering in Accelerator Science and Technology) Project, supported by the European Commission under the... -
Guimei Wang (National Synchrotron Light Source II)18/05/2026, 16:00MC6.T05: Beam Feedback SystemsPoster Presentation
In 2019, the NSLS-II fast orbit feedback (FOFB) system was upgraded by reducing BPM and Cell Controller latency, increasing the closed-loop bandwidth from about 250 Hz to 400 Hz. The dynamic behavior of the power supply, magnet, and vacuum chamber, however, had not been directly measured and was treated as a lumped delay. To provide baseline parameters for the NSLS-IIU upgrade, we developed a...
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Artur Gevorgyan (European Spallation Source)18/05/2026, 16:00MC7.T14: Vacuum TechnologyPoster Presentation
For the ESS superconducting linac in Sweden, four compact beam stops were designed instead of bulky beam dumps. The beam stops dump protons either up to 100 MeV or 250 MeV; the most demanding beam modes have an average beam power of 700 or 1100 W, respectively.
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The beam stops are water-cooled and moved by pneumatic actuators.
The beam stops were designed at the ESS in Sweden and... -
Francesco Bardi (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T10: Superconducting MagnetsPoster Presentation
A single-aperture, two-layer Canted-Cosine-Theta (CCT) sextupole magnet using high-temperature superconducting (HTS) ReBCO tape has been developed for the short straight sections (SSS) of FCC through the FCCee-HTS4 project. The magnet was designed, manufactured and tested under cryogenic conditions. Two HTS tapes from two manufacturers have been qualified for this specific application. Design...
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Pascal Anger (Grand Accélérateur National d'Ions Lourds)18/05/2026, 16:00MC7.T21: InfrastructuresPoster Presentation
For over 40 years, the GANIL facility has been supplying stable beams (carbon to uranium, 60 keV/A to 95 MeV/A) and low- and high-energy radioactive ion beams for fundamental, applied and industrial research from a set of 5 cyclotrons.
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Since 2010, due to the SPIRAL2 construction and compliance projects associated with the French safety regulations, the cyclotrons maintenance and refurbishment... -
Hongping Jiang (Lancaster University)18/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
A Twin-axial type Ferro-Electric Fast Reactive Tuner (FE-FRT) is under development for the SASE, aiming to provide a fast and efficient microphonics suppression. The tuner consists of two magnetically coupled cylindrical resonators operating out of phase. In high-frequency FE-FRT, the temperature rise may limit the tuning range. The twin-axial configuration doubles the tuning range for the...
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Longwei Lai (Shanghai Advanced Research Institute)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
As part of the intelligent upgrade, Shanghai Synchrotron Radiation Facility (SSRF) requires the digital BPM signal processors (DBPM) including White Rabbit timing signal, to enable intelligent beam commissioning. A new digital BPM processor was developed for SSRF to fulfil this requirement. The processor consists of a digital signal processing motherboard and an RF signal conditioning and...
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Adam Steinberg (The University of Melbourne)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
In charged particle therapy, high energy layer switching times prolong beam delivery time, limiting treatment efficiency and accuracy. The TURBO (Technology for Ultra-Rapid Beam Operation) project aims to build a low-energy (0.5-3 MeV) demonstrator beamline for proton therapy with a large momentum acceptance (±42%), enabling rapid delivery over the full clinical energy range, alleviating this...
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Agnieszka Chmielinska (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T10: Superconducting MagnetsPoster Presentation
The superconducting magnet circuits of the Large Hadron Collider (LHC) at CERN undergo a commissioning campaign at regular intervals, referred to as Hardware Commissioning (HWC), to validate magnet powering and protection functions. During each campaign, more than 1,500 circuits must be commissioned, requiring the execution and analysis of several thousand powering tests. Historically, this...
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Dr Peter Williams (STFC Daresbury Laboratory, Cockcroft Institute)18/05/2026, 16:00MC1.A03: Linear Lepton CollidersPoster Presentation
A 550 GeV centre-of-mass Higgs factory is presented, the
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Linear Ghost Collider (LGC). Acceleration and deceleration
are performed within SRF linacs where the bunches trans-
ported are net neutral, comprising equal charges of electrons
and positrons, termed ghost bunches. Within these, one
charge partner accelerates, and the other decelerates. En-
ergy is recovered after a collision, and... -
Antonio Trigilio (Istituto Nazionale di Fisica Nucleare)18/05/2026, 16:00MC7.T09: Normal Conducting MagnetsPoster Presentation
Accurate calibration of NMR probes is essential for high-quality magnetic-field measurements. Within the PNRR IRIS project, the Magnetic Measurement Facility (MMF) at LNF-INFN has implemented a new dedicated calibration system designed and manufactured by CAYLAR. The setup includes a 2.23 T dipole magnet with a 35 mm gap, a 1ppm four-quadrant power supply for low-field operation, and three NMR...
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Michael Mayerhofer (Universität der Bundeswehr München)18/05/2026, 16:00MC7.T35: Advanced Manufacturing Technologies for Accelerator ComponentsInvited poster
A variety of studies show that additive manufacturing (AM) of particle-accelerator components using laser powder bed fusion (PBF-LB/M) offers significant potential to reduce investment costs while simultaneously improving figures of merit. However, the classical PBF-LB/M process does not support combining different materials within a single piece. Conventional manufacturing routines are...
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Abderraouf OUAZIB (Synchrotron soleil)18/05/2026, 16:001MC7.T09: Normal Conducting MagnetsPoster Presentation
The SOLEIL II upgrade relies on a lattice combining 7BA
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and 4BA High-Order Achromat (HOA) cells. Strict compact-
ness constraints and energy efficiency objectives have driven
the adoption of permanent magnet based technology for
the main bending and focusing elements, while quadrupole
correctors, sextupoles, and octupoles remain resistive to pre-
serve operational flexibility. This... -
Thomas Schmidt (European X-Ray Free-Electron Laser)18/05/2026, 16:00MC7.T15: Technology: Undulators and WigglersPoster Presentation
EUXFEL is preparing a combined Hall probe, moving and pulsed wire measuring system (SUNDAE2), which conceptual design has been presented already before. Now the hardware realization with functional tests can be reported. The challenge is to operate these systems under vacuum to magnetically characterize S-PRESSO (Superconducting undulator PRE-SerieS mOdule), in construction at Bilfinger and...
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Kei Sugita (GSI Helmholtz Centre for Heavy Ion Research)18/05/2026, 16:00MC7.T10: Superconducting MagnetsInvited poster
Superconducting magnets are widely used in the FAIR facility in Darmstadt, Germany. For the main accelerator, the heavy-ion synchrotron SIS100, the iron dominated superconducting magnets are fast ramped, with up to 4 T/s for the dipole magnet. The ion-optical elements of Super-FRS are realized by large aperture superconducting magnets mostly.
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The large aperture dipole magnet will be... -
Chengzhe Wang (National Synchrotron Radiation Laboratory, University of Science and Technology of China)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Accurate characterization of longitudinal properties in ultrashort electron bunches constitutes a fundamental prerequisite for advancing scientific applications of compact particle accelerators. Here, we present an on-chip integrated terahertz (THz)-driven dielectric particle deflector based on the inverse Cherenkov effect: by coherently illuminating a high-breakdown-threshold right-angle...
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Patrick Krkotic (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T14: Vacuum TechnologyPoster Presentation
The design of the Future electron--positron Circular Collider (FCC-ee) vacuum system integrates vacuum engineering, impedance mitigation, and surface functionalisation to achieve compatibility with high beam currents and sustained operational stability. Based on these design principles, this contribution presents an overview of the principal vacuum components and outlines the studies conducted...
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Dr Marcel Himmerlich (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T14: Vacuum TechnologyPoster Presentation
Laser-induced surface roughening facilitates secondary electron yield reduction of materials [1]. The lab-based demonstration on small scale in 2014 motivated an initiative to scale-up the technology for processing of long vacuum components with inner surfaces to be treated in apertures < 50 mm, which is challenging. To address this, we have developed a technique that enables the selective...
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Dr Lorenzo BORTOT (European Synchrotron Radiation Facility)18/05/2026, 16:00MC7.T10: Superconducting MagnetsPoster Presentation
High-temperature superconducting (HTS) magnets are increasingly considered for compact, high-field accelerator applications due to their large current capacity, thermal stability, and reduced cryogenic requirements. No-insulation (NI) HTS coils further provide compact winding and intrinsic self-protection, but their transient current redistribution during ramping or local quench can introduce...
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Kévin André (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A02: Lepton Circular CollidersPoster Presentation
The Future Circular Collider – electron-positron (FCC-ee) aims to deliver ultra-low emittance beams to enable precision measurements across multiple energy regimes. Achieving and maintaining optimal machine performance requires robust tuning methods capable of correcting a wide range of imperfections. In this contribution, we evaluate the impact of realistic misalignment errors and magnet...
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Lewis Kennedy (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A03: Linear Lepton CollidersPoster Presentation
The ultra-low 𝛽𝑦* optics at the Accelerator Test Facility 2 (ATF2) enables studies of final focus systems under chromatic conditions relevant for future linear colliders. Following the installation of a new final doublet with improved field quality, the achievable beam size and the contribution of nonlinear aberrations are re-evaluated. Using high-order tracking with MAD-NG, the vertical beam...
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Matthew Jones (ASTeC, STFC Daresbury Laboratory)18/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
At the start of superconducting radiofrequency cavity testing, cavity time constant measurements are taken and from these measurements the field probe external quality factor is calculated. This value is then used for the calculation of quality factor and accelerating gradient for the remainder of the testing process. In previous analyses the uncertainty of the time constant measurement has...
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Cornelia Marion Schmitt (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T21: InfrastructuresPoster Presentation
Large research facilities with continuously evolving electrical installations and many stakeholders often face unique challenges in implementing electrical safety. The Electrical Safety Project at CERN aims to standardize methods and processes in order to improve electrical risk management during maintenance and operation of the CERN accelerator complex. The project focuses on several axes for...
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Chuyu Liu (Brookhaven National Laboratory), Vincent Schoefer (Brookhaven National Laboratory)18/05/2026, 16:00MC1.A01: Hadron CollidersPoster Presentation
The Electron Ion Collider Hadron Storage Ring (HSR) will be built on the campus of Brookhaven National Laboratory. The injection into the HSR will be vastly different from what is currently performed in the Relativistic Heavy Ion Collider. This paper will highlight the differences from RHIC, present the injection optics, and layout of the current design.
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Adnan Kurtulus (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
The high-energy (HE) linac for the FCC-ee injector complex must deliver 20 GeV beams with high stability for top-up injection. Following an initial design at 2.8 GHz, the RF frequency has been updated to 3 GHz to align with the European S-band standard, enhancing compatibility with existing high-power RF components and industrial manufacturing for the Technical Design Report (TDR) phase....
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Keon Hee Kim (Grand Accélérateur National d'Ions Lourds)18/05/2026, 16:00MC1.A02: Lepton Circular CollidersPoster Presentation
Following the Future Circular Collider (FCC) Feasibility Study completion, the impedance model for the FCC-ee High-Energy Booster (HEB) has been significantly expanded beyond the initial copper vacuum pipe resistive wall analysis. This paper presents a comprehensive impedance and wake budget incorporating RF cavities, bellows, and beam position monitors, evaluated through 3D electromagnetic...
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Julian Gethmann (Karlsruhe Institute of Technology)18/05/2026, 16:00MC7.T21: InfrastructuresPoster Presentation
The thermal well system to support the cooling plant of the accelerator test facility Karlsruhe Research Accelerator (KARA) at the Karlsruhe Institute of Technology (KIT) is in test operation after about one year of commissioning. To avoid any impact on the environment, follow the governmental regulations, and document different aspects and operation statistics, KIT developed a special robust...
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Michael Bousonville (Deutsches Elektronen-Synchrotron DESY)18/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
When planning the European XFEL, the decision was made to avoid using SF6 in the waveguide systems. Instead, air was used at slight to high overpressure. When slight overpressure is used, the air is also in motion. The air flow travels from the RF source towards the cavities and is released again before the coupler. This ensures that, in our non-gas-tight waveguide system, the air quality in...
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Thibaut Parmentier (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T20: Technology: Targetry and DumpsPoster Presentation
As part of the consolidation of CERN’s North Experi-mental Area (NA-CONS project), a dump located in the TT20 transfer line has been redesigned to comply with the higher beam intensities required for the future BDF/SHiP facility, and to improve its operational relia-bility. The new dump must be capable of dissipating up to 45 kW of steady-state power generated by the slow extraction of 400...
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Quentin Bruant (Commissariat à l'Énergie Atomique et aux Énergies Alternatives)18/05/2026, 16:00MC1.A02: Lepton Circular CollidersPoster Presentation
In order to consistently operate collider at peak luminosity, one have to know in detail the full magnetic lattice of the colliding rings, and to know in particular the deviation of the real lattice from the model used in the design phase.
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Turn-by-turn BPMs surveys are one of the method available to measure this deviation. Based on the n-BPM method developped at CERN, the spectral response of... -
Gabriel Soto (University of California, Davis)18/05/2026, 16:00MC6.T04: Accelerator/Storage Ring Control SystemsPoster Presentation
Crocker Nuclear Laboratory has been going through a modernization in its control system. One of the projects being made for the modernization is using machine learning to model the isochronous cyclotron environment & to use that model for autonomous control. The model uses convoluted neural networks, and uses 32 controlled parameters that all affect the beam current and stability. This model...
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Maria Carmen Giordano (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T14: Vacuum TechnologyPoster Presentation
AWAKE is the proton-driven plasma-wakefield acceleration experiment at CERN, currently preparing a major upgrade for Run-2c, scheduled to start in 2029. This phase will introduce new beamlines and extended infrastructure, including separate proton bunches-modulation and electron-acceleration stages, achieved in two plasma cells. These planned additions impose complex integration constraints...
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Luisa Spallino (Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati)18/05/2026, 16:00MC7.T14: Vacuum TechnologyPoster Presentation
A thorough understanding of material properties in vacuum, including cleanliness and storage conditions, is critical for ensuring the longevity of accelerator vacuum systems. Originally established for the design, testing, and installation of components for projects like Adone, DAΦNE, and SPARC, the LNF-INFN vacuum laboratory has evolved into a strategic infrastructure supporting current and...
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Alessio Galloro (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T14: Vacuum TechnologyPoster Presentation
The High Luminosity Large Hadron Collider (HL-LHC) is entering its final development phase, requiring the optimisation of its vacuum layout to ensure reliable operation. The main upgrades with respect to the current LHC involve the Long Straight Sections next to the two large, general-purpose experiments (ATLAS and CMS), including new final focusing magnets and a full crab crossing...
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Marios Kyprianidis (European Organization for Nuclear Research)18/05/2026, 16:00MC7.T14: Vacuum TechnologyPoster Presentation
The High Luminosity LHC project requires a flexible approach to collimator vacuum conditioning that addresses both operational vacuum performance and the maintenance constraints associated with highly radioactive equipment. This work combines outgassing studies and LHC pressure profile analyses to optimize the vacuum conditioning procedure for collimators used for betatron cleaning installed...
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Nicolas Mounet (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A01: Hadron CollidersPoster Presentation
The High Luminosity (HL–LHC) project aims to increase the integrated luminosity of CERN’s Large Hadron Collider (LHC) up to 3 ab−1, and 4 ab−1, as Nominal and Ultimate goals, respectively, over the full lifetime of the facility. The large boost in bunch population and beam brightness, compared to the currently achieved beam parameters in the LHC and stemming from the LHC injector upgrade...
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Marion Vanwelde (European Organization for Nuclear Research)18/05/2026, 16:00MC1.A09: Muon Accelerators, Neutrino Factories, Muon CollidersPoster Presentation
Muons offer several advantages for circular colliders: as leptons, they allow for high-precision and similar physics reach as larger hadron colliders, while their higher mass suppresses the synchrotron radiation that limits circular electron colliders. The main challenge of muon colliders is the short lifetime of muons. Muon decay generates an intense neutrino flux emitted in a narrow cone...
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Hans-Walter Glock (Helmholtz-Zentrum Berlin für Materialien und Energie)18/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
The VSR Demo project aims for the validation of a cavity design suitable for the application in electron storage rings, characterized by currents of several hundreds of mA and a dense wakefield spectrum caused by inhomogeneous fill patterns. The cavities are equipped with five waveguides plus a coaxial fundamental power coupler, forming two groups of three radial extensions at either cavity...
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Moe Sugita (Japan Atomic Energy Agency)18/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
The J-PARC RCS uses four horizontal and two vertical painting magnets to generate a high-intensity beam through painting injection. Their IGBT-chopper power supplies can reproduce current waveforms with an accuracy of better than 1%. Combining automatic generation of input voltage (IV) patterns with manual fine-tuning keeps the current deviation of the painting pattern (PP) within...
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Euan Smith (University of Manchester, Cockcroft Institute)18/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
Very high energy electrons (VHEE) are a potential future modality in the field of radiotherapy. They have garnered considerable interest because they possess a unique combination of several properties including: being capable of deep tissue penetration (>30 cm), relative insensitivity to tissue inhomogeneities and being well suited to FLASH therapy. FLASH is the use of ultra-high dose rates...
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Gabriel Ascenção (Brazilian Synchrotron Light Laboratory)18/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The set of X-ray Beam Position Monitors (XBPMs) at SIRIUS, the Brazilian Synchrotron Light Laboratory (LNLS), is not yet fully operational due to ongoing calibration challenges. These SIRIUS XBPMs employ a blade-type design, which exhibits a linear response only in its central region. Minor asymmetries in device construction and variations in individual blade gains can amplify distortions in...
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Ameya Patwardhan (Eindhoven University of Technology)19/05/2026, 16:00MC3.T02: Advanced techniques/Novel sources: Electron SourcesPoster Presentation
Time resolved crystallography of biological systems has become increasingly popular with the development of X ray Free Electron Lasers. In addition to X rays, high quality electron beams can also be used for diffraction. However, the large lattice constant of protein crystals poses strict requirements on the transverse emittance of the electron beam. The ultracold electron source is a...
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Ruifeng Zhang (Institute of Modern Physics, Chinese Academy of Sciences)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
The Proton Radiation Effects Facility (PREF) was designed and constructed by the Institute of Modern Physics (IMP), Chinese Academy of Sciences. It aims to provide low to medium energy protons from 10-60 MeV, which is an excellent range for experimental research on the displacement damage effect studies. The facility uses a compact, four-vane RFQ with dual-port as its injector, powered by two...
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Ping-Shun Chuang (National Synchrotron Radiation Research Center)19/05/2026, 16:00MC7.T13: CryogenicsPoster Presentation
The current helium cryogenic system at the Taiwan Photon Source (TPS) is a single-plant configuration designed to support up to four superconducting RF cavities. While reliable in routine operation, the single-system architecture poses a critical vulnerability: any warm-up maintenance, scheduled overhaul, or unexpected repair requires a complete shutdown of the cryoplant, interrupting helium...
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Helena Jaworska (Heinrich Heine University Düsseldorf)19/05/2026, 16:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationPoster Presentation
The Electron-Ion Collider (EIC) is presently under construction at Brookhaven National Laboratory, and will collide electrons with an energy of up to 18 GeV with hadrons of up to 275 GeV. In this work we evaluate the feasibility of using proton-driven plasma wakefield acceleration to accelerate electron bunches to full energy for injection into the EIC Electron Storage Ring. Particle-in-cell...
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John Lyles (Los Alamos National Laboratory), Michael Brown (Los Alamos National Laboratory), Steven Russell (Los Alamos National Laboratory)19/05/2026, 16:00MC7.T08: RF Power SourcesPoster Presentation
The Los Alamos Neutron Science Center (LANSCE) accelerator is an 800 MeV, high-power proton machine that services numerous experimental areas that include proton radiography, spallation neutron source targets, and an end station dedicated to isotope production. Now in its sixth decade of operation, LANSCE accelerates its H- beam from 100 to 800 MeV using an 805 MHz coupled cavity linear...
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LINGLONG MAO (Shanghai Institute of Applied Physics, Chinese Academy of Sciences)19/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
The design of fourth-generation synchrotron light sources based on Hybrid Multi-Bend Achromat (H-MBA) structures faces significant challenges due to the high dimensionality of design variables and the strong nonlinear effects induced by strong focusing forces. The traditional paradigm of ``manual matching followed by stepwise fine-tuning'' encounters bottlenecks in optimization efficiency and...
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Sung-Woo Lee (Oak Ridge National Laboratory)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
Efficient and reliable RF power couplers in accelerating cavities require precise impedance matching and mechanical stability to ensure optimal beam energy transfer. In radio-frequency quadrupole (RFQ) accelerators, power is commonly delivered using waveguide iris or coaxial loop couplers. Iris couplers can handle high RF power but lack tunability, while coaxial loop couplers offer tuning...
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Toshiya Tanabe (Brookhaven National Laboratory)19/05/2026, 16:001MC7.T15: Technology: Undulators and WigglersPoster Presentation
A standardized magnetic measurement system exists for evaluating the field characteristics of conventional insertion devices, including in-vacuum undulators designed for NSLS-II, which employ a rectangular measurement window. A In-Vacuum Magnetic Measurement System (IVMMS) valid for 1.5 m long CPMU was developed during the NSLS-II project. However, in the case of cryogenic permanent magnet...
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Jin Lin (Tsinghua University)19/05/2026, 16:00MC2.A26: Photon sources: Compton sourcesPoster Presentation
We proposed a novel method of using nuclear resonance fluorescence (NRF) as a probe for spectrum measurements. By utilizing the continuous tunability of an ICS source, NRF photons can be excited at different points across the spectrum. The shape of the energy spectrum can then be effectively scanned and reconstructed by recording the relative NRF yields at different energy points. The...
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Vitaliy Goryashko (Uppsala University)19/05/2026, 16:00MC2.A08: Photon sources: Linear AcceleratorsPoster Presentation
The SACLA linear accelerator employs a DC gun with a thermionic cathode, valued for high beam quality, excellent operational stability, and minimal maintenance. We present a comprehensive beam-dynamics analysis of this source and outline a path toward sub-micrometer (0.1 um) normalized emittance. We provide analytical estimates and particle tracking results for four dominant emittance-growth...
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Hywel Owen (Science and Technology Facilities Council)19/05/2026, 16:00MC8.U01: Health & BiologyPoster Presentation
LhARA is multidisciplinary collaboration that is embarking on an initiative to use laser-driven ions in a hybrid acceleration scheme with a fixed-field alternating gradient (FFA) accelerator to deliver a systematic radiation biology programme and lay the technological foundations for the transformation of proton and ion beam therapy. LhARA is in an R&D phase of activity that is overseeing the...
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Lina Valle (European Organization for Nuclear Research)19/05/2026, 16:00MC8.U11: Outreach and CommunicationsPoster Presentation
Early-career researchers (ECRs) are central to the advancement of accelerator science and technology, contributing across all areas - from R\&D, theory, and design to experiment, commissioning, and operation - at all scales, from small medical accelerators to large colliders. While accelerator projects are often high-cost, long-timescale, and resource-intensive, ECR perspectives are...
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Oleh Svystunov (National Science Center Kharkiv Institute of Physics and Technology)19/05/2026, 16:00MC3.A15: Advanced techniques/Novel sources: New Acceleration Concepts and TechniquesPoster Presentation
The acceleration of electrons in dielectric laser accelerators (DLAs) with a triangular ridge profile on the structure's surface was investigated. The aim was to to determine the maximum acceleration gradients when using DLA with triangular profiles. Single chip structures with a triangular profile, both transparent and reflective to laser radiation, were considered. The acceleration gradients...
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Vadim Sajaev (Argonne National Laboratory)19/05/2026, 16:001MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
A well-corrected lattice is essential for the performance of any modern synchrotron light source. Beyond the standard motivations -- such as preserving optimized nonlinear dynamics and maintaining sufficient dynamic and momentum acceptance -- accurate lattice correction is particularly important in APS-U for achieving the predicted emittance reduction associated with insertion-device...
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Hanxiang Yang (Shanghai Advanced Research Institute)19/05/2026, 16:001MC2.A06: Free Electron Lasers (FELs)Poster Presentation
Externally seeded free-electron lasers (FELs) are promising approaches for generating fully coherent soft-X-ray radiation. Their extension to shorter wavelengths and MHz-level repetition rates is, however, constrained by the limited availability of high-repetition-rate seed lasers with sufficient energy modulation. Recent self-amplification and direct-amplification experiments at the Shanghai...
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Leonardo Thome (University of Bonn)19/05/2026, 16:00MC8.U01: Health & BiologyPoster Presentation
Ultra-high-energy electrons are used to investigate their effects on cell samples in nanosecond to microsecond pulses at the electron accelerator facility ELSA. This may allow highly efficient treatment of deep-seated tumors through the FLASH effect. Previous studies at ELSA using an inital extraction mode with 250 ns long pulses from the 1.2 GeV booster synchrotron demonstrated the...
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Xiaopeng Xu (University of Science and Technology of China)19/05/2026, 16:00MC7.T14: Vacuum TechnologyPoster Presentation
The Hefei Advanced Light Facility (HALF), currently under construction, is a fourth-generation synchrotron radiation source operating in the low-energy region (2.2 GeV) and based on diffraction-limited storage ring technology. The storage ring employs a modified hybrid 6BA lattice with a beam emittance of 86.3 pm·rad and consists of 20 achromat cells with a total circumference of approximately...
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qiuyu zhang (University of Science and Technology of China)19/05/2026, 16:00MC7.T17: Technology: Alignment and SurveyPoster Presentation
The storage ring of the Hefei Advanced Light Facility has a circumference of approximately 480 m and consists of 20 hybrid six-bend achromatic (H6BA) lattice units with a natural emissivity of approximately 86 pm·rad. High-brightness diffraction-limited light sources place higher demands on alignment. This paper focuses on the HALF lattice and uses the Accelerator Toolbox (AT) utility program...
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Arthur Clairembaud (Max Planck Institute for Physics)19/05/2026, 16:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationPoster Presentation
In AWAKE, the wakefields - and therefore the accelerating gradient - are generated through the self-modulation of a long, 400GeV proton bunch from the SPS. We present here the first experimental measurement of the event-to-event reproducibility of the wakefield amplitude produced by the self-modulation process.
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Using two independent diagnostics, i.e., rms size of the bunch downstream of the... -
Zhouyu Zhao (National Synchrotron Radiation Laboratory)19/05/2026, 16:001MC2.A24: Photon sources: Accelerators and Storage Rings, OtherPoster Presentation
The Hefei Advanced Light Facility (HALF) is a diffraction-limited storage ring light source with a beam energy of 2.2 GeV. There are 13 insertion devices (IDs) will be installed in the storage ring, which will have severe impacts on the low-energy beam. Especially for the long-period EPU, the non-linear effect will significantly reduce the dynamic aperture of the storage ring. In this paper,...
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jinya chen (Shanghai Advanced Research Institute, Chinese Academy of Sciences)19/05/2026, 16:001MC7.T15: Technology: Undulators and WigglersPoster Presentation
Synchrotron radiation facilities impose stringent requirements on the magnetic field quality, stability, and lifetime of undulators. During long-term operation of a beamline at the Shanghai Synchrotron Radiation Facility (SSRF), a gradual degradation of photon-beam performance was observed. To identify the cause, the cryogenic permanent magnet undulator of this beamline was warmed up and...
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Shengjin LIU (China Spallation Neutron Source)19/05/2026, 16:00MC2.T02: Photon sources: Electron SourcesPoster Presentation
In the research on high-gradient photocathode electron guns, the existence of dark current not only affects the measurement of photo-beam but also causes problems such as secondary electron multiplication and an increased difficult of condition. In this paper, the sources of dark current emission inside the electron gun and their impact duiring the power test are discussed through simulations....
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Wencai Cheng (Shanghai Advanced Research Institute, Chinese Academy of Sciences)19/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
Intra-beam scattering (IBS) can substantially enhance the slice energy spread of high-brightness electron beams, thereby degrading the performance of free-electron laser (FEL) facilities. This effect is particularly detrimental for advanced operation modes such as self-seeding, which impose stringent requirements on beam longitudinal coherence. Consequently, an accurate evaluation of IBS...
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Samuel Marini (Commissariat à l'Énergie Atomique et aux Énergies Alternatives)19/05/2026, 16:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationPoster Presentation
Achieving plasma-based accelerators for users demands careful control not only of the beam energy and energy spread, but also of transverse beam properties such as emittance, size, and divergence. Since plasma-based accelerators typically produce beams with significantly larger energy spread and emittance than conventional RF accelerators, several questions remain to be addressed,...
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Paula Desire Valdor (European Organization for Nuclear Research, University of Groningen)19/05/2026, 16:00MC3.A09: Advanced techniques/Novel sources: Muon Accelerators, Neutrino Factories, Muon CollidersPoster Presentation
Muon colliders require strong beam cooling to reduce the large phase space of muon beams produced from pion decay. The final stage of ionization cooling employs high-field solenoids, absorbers, and RF cavities, where precise beam matching is essential to avoid emittance growth. In this work, we present a beam-parameter–based approach to design and optimize solenoid lattices for the final...
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Tianlong He (University of Science and Technology of China)19/05/2026, 16:00MC7.T14: Vacuum TechnologyPoster Presentation
To coat the inner surface of antechamber type vacu-um chamber for Hefei Advanced Light Facility (HALF) with nonevaporable getter (NEG) fillm, a dedicated magnetron sputtering setup has been prepared at National Synchrotron Radiation Laboratory (NSRL). The magnetron sputtering device and the coating method are introduced in this paper. The properties of the films were tested. This coating...
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Xinzhong Liu (Shanghai Advanced Research Institute, Chinese Academy of Sciences)19/05/2026, 16:00MC2.T15: Photon sources: Undulators and WigglersPoster Presentation
A deep-learning-based feedforward scheme has been developed to compensate insertion-device (ID) effects in the Shanghai Synchrotron Radiation Facility (SSRF). Neural networks predict orbit and betatron-coupling perturbations caused by ID gap and phase changes. The orbit model reduces residual closed-orbit distortion (COD) to below 2 um and shortens preparation time by about a factor of 50...
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Ihar Lobach (Brookhaven National Laboratory)19/05/2026, 16:00MC2.A24: Photon sources: Accelerators and Storage Rings, OtherPoster Presentation
In NSLS-II storage ring, the 10 kHz orbit data are always available and can be collected at any time interval. At this moment, they are being collected every 10 minutes to review the machine stability status or investigate orbit related issues impacting user satisfaction. To improve the machine performance, we are studying the machine learning techniques with which we can detect any orbit...
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Yasuyuki Sugiyama (High Energy Accelerator Research Organization)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
Magnetic-Alloy-loaded cavities have been used for many applications; beam accelerations of high-intensity proton and heavy ion beams, beam manipulations, medical accelerators and anti-proton decelerations. The material has a large permeability and the cavities have bandwidth below approximately 10 MHz. Using an external inductor for reducing the effective inductance of a cavity system, the...
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Yong Luo (Argonne National Laboratory)19/05/2026, 16:00MC2.A24: Photon sources: Accelerators and Storage Rings, OtherPoster Presentation
Radiofrequency (RF) power for the Argonne Advanced Photon Source (APS) storage ring (SR) and Booster cavities is currently supplied by multiple klystrons. APS is in the process of transitioning to 160 kW solid state amplifier (SSA) system per SR cavity. Several SSA systems have already been delivered, and site acceptance testing (SAT) has been completed on four units. New 200 kW circulators...
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Farhad Rahimi (TRIUMF)19/05/2026, 16:00MC7.T14: Vacuum TechnologyPoster Presentation
The ARIEL facility expands TRIUMF’s isotope production by adding two new target stations operating in parallel with the existing infrastructure, enabling high-intensity Radioactive Ion Beam (RIB) production. At the core of this facility, a complex vacuum system is designed to maintain the conditions required for RIB production while safely managing radioactive gases generated during...
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Kiyomi Seiya (High Energy Accelerator Research Organization)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
The J-PARC Main Ring plans to increase its beam power from 830 kW to 1.3 MW for the Hyper-Kamiokande neutrino experiment by 2028. To enable this higher-power operation, the RF system has been upgraded by increasing both the number of cavities and the anode current of the tetrode tubes. However, the required anode current is now approaching the maximum capability of the tubes, and several...
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Foteini Asvesta (European Organization for Nuclear Research)19/05/2026, 16:00MC8.U11: Outreach and CommunicationsPoster Presentation
Beyond providing Transnational Access to major Research Infrastructures (RIs) across Europe, the European Laboratories for Accelerator Sciences (EURO-LABS) programme supports advanced training activities. Within this framework, an Advanced Training School on the Operation of Accelerators (ATSOA) is organised at CERN. The school targets students, young researchers, and professionals in the...
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Chenzhi Xu (Shanghai Institute of Applied Physics)19/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
Attosecond X-ray pulses are essential for probing ultrafast electron dynamics in condensed matter systems, molecular processes, and strongly correlated materials. Recent progress in X-ray free-electron lasers (XFELs) has significantly advanced the generation of such pulses, opening new frontiers in ultrafast science. Building on this, the attosecond operation mode of SHINE, termed AttoSHINE,...
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Edda Gschwendtner (European Organization for Nuclear Research)19/05/2026, 16:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationPoster Presentation
The AWAKE programme at CERN has evolved from its initial proof-of-principle phase to a comprehensive facility dedicated to advancing proton-driven plasma wakefield acceleration towards first particle-physics applications. In preparation for this next stage, AWAKE will undergo a major upgrade during CERN’s Long Shutdown 3 enabling the demonstration of electron acceleration to 6-10 GeV in a 10 m...
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Tao He (University of Science and Technology of China)19/05/2026, 16:00MC2.A24: Photon sources: Accelerators and Storage Rings, OtherPoster Presentation
For storage rings, bending magnets with transverse gradient are commonly adopted to reduce the natural emittance. These magnets are typically offset quadrupoles, which generate combined dipole and quadrupole fields. Therefore, it is crucial to ensure that the beam travels at the designed off-axis position within the target magnets. Otherwise, particles would experience an additional dipole...
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Yi Jiao (Institute of High Energy Physics, Chinese Academy of Sciences)19/05/2026, 16:00MC2.A04: Photon sources: Circular AcceleratorsPoster Presentation
In modern storage ring light source, large offset of quadrupoles will degrade the beam quality in the ring. Beam based alignment(BBA) methods have been used widely in storage rings, to correct the orbit of the beam to the magnetic center of quadrupoles. The BBA algorithm and commissioning procedure at HEPS is described in this paper
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Kritsada Kittimanapun (Synchrotron Light Research Institute)19/05/2026, 16:00MC7.T20: Technology: Targetry and DumpsPoster Presentation
A 280-MeV electron linear accelerator has been designed to expand the research capabilities and applications of high-energy electron beams in Thailand. For commissioning and energy verification, two dedicated beam dumps are positioned downstream of the bending magnet. This work presents the simulation-based design and optimization of these beam dumps using the PHITS Monte Carlo radiation...
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Ms Fengyi Zhang (University of Science and Technology of China)19/05/2026, 16:00MC2.A24: Photon sources: Accelerators and Storage Rings, OtherPoster Presentation
Electron microtrons are extensively employed as injectors for tabletop light source facilities. In this paper, a 5 MeV electron microtron is designed, and an external injection scheme is adopted to achieve a large stable longitudinal phase region. We investigated the beam dynamics of this microtron using General Particle Tracer (GPT). After optimization, the width of stable longitudinal phase...
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Thomas Fogg (Particle Therapy Research Center)19/05/2026, 16:00MC8.U01: Health & BiologyPoster Presentation
Ultra-High-Dose-Rate (UHDR) / FLASH radiotherapy with proton pencil beams requires particle fluxes that saturate current clinical dosimetry, such as ionisation chambers. Before UHDR proton therapy can be clinically implemented, novel dosimetry techniques must be developed that reduce the uncertainty on delivered dose to within clinical accuracies. One promising solution is to image gas Beam...
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Yosuke Ueda (Japan Synchrotron Radiation Research Institute)19/05/2026, 16:00MC7.T14: Vacuum TechnologyPoster Presentation
SPring-8-II, a major upgrade of the third generation light source SPring-8, aims to achieve low emittance below 100 pm·rad and to reduce the power consumption of the light source machine. High magnetic field magnets for SPring-8-II naturally result in narrow bore diameters and are densely distributed. As a result, vacuum chambers along the entire storage ring are designed with narrow...
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Helena Lefebvre (Extreme Light Infrastructure Beamlines)19/05/2026, 16:00MC3.A15: Advanced techniques/Novel sources: New Acceleration Concepts and TechniquesPoster Presentation
In accelerator physics, particle channelling in crystals is a well-established phenomenon. By carefully selecting crystal orientation, particle’s trajectories can be controlled and guided along desired paths. Bent crystals have been used at worldwide particle accelerators as optical elements to steer charged particle beams.
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Laser-induced accelerators could also benefit from the bent crystal... -
Salim Ogur (Thomas Jefferson National Accelerator Facility)19/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
The Low Energy Recirculator Facility (LERF) at Jefferson Lab, formerly operated for the Free-Electron Laser program, has been proposed as the injector complex for the planned 12 GeV CEBAF positron upgrade (Ce+BAF), with an additional pathway to support a potential 22 GeV CEBAF electron upgrade. In this configuration, LERF would generate and pre-accelerate positrons to 123 MeV, matching the...
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Shu Takagi (Mitsubishi Heavy Industries Machinery Systems, Ltd.)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
Our 6 MeV medical C-band accelerating structure is assembles using the disk-stacked method, where multiple oxygen-free copper components are stacked along the beam axis. The design incorporates the side-coupled (SC) structure and the re-entrant structure with an accelerating gap at the center of the cavity. Due to the complex shape and the large number of components, there are difficulties in...
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Daniel Dewitt (Technical University of Darmstadt)19/05/2026, 16:00MC3.A15: Advanced techniques/Novel sources: New Acceleration Concepts and TechniquesPoster Presentation
Laser-plasma acceleration can generate short, intense ion beams with energies up to several hundred MeV. However, the intrinsic large divergence and broad energy spectrum of these beams necessitate dedicated capture and transport beamlines to achieve high particle yields for applications. In this work, we use the LIGHT beamline with the PHELIX laser at GSI as an example case to develop and...
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Enrica Chiadroni (Sapienza University of Rome)19/05/2026, 16:00MC3.A16: Advanced techniques/Novel sources: Advanced ConceptsPoster Presentation
The emission of betatron radiation from the beam-driven plasma wakefield acceleration is under consideration at SPARC_LAB [1], as a test-bed for the study and development of a plasma-based undulator device. In the framework of the EuPRAXIA ESFRI facility [2] and EuPRAXIA@SPARC_LAB project [3], there is a deep interest in developing a compact plasma-based user facility, not only for what...
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Prof. Carsten Welsch (Cockcroft Institute, Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati)19/05/2026, 16:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationPoster Presentation
The EuPRAXIA Doctoral Network (EuPRAXIA-DN) has delivered major advances over the past year in laser–plasma physics, beam diagnostics, and compact radiation-source concepts. Experiments demonstrated superradiant nonlinear Thomson scattering, showing collective enhancement of radiation from relativistic electron bunches interacting with azimuthally polarized laser pulses. Diagnostics...
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Charles Rohde (Los Alamos National Laboratory)19/05/2026, 16:00MC7.T25: Technology: LasersPoster Presentation
We present the design and initial amplification stages of a seeded Master Oscillator Power Amplifier (MOPA) laser for H- beam shaping applications. Customizable modulation of the input (seed) laser pulse shape will be shown to optimize the amplified laser pulse shape output at the nanosecond level, allowing for high speed ‘notching’ or ‘trimming’ of photo-ionized H- bunch shapes. By matching...
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Ward Wurtz (Canadian Light Source (Canada))19/05/2026, 16:00MC2.T12: Photon sources: Beam Injection/Extraction and TransportPoster Presentation
The Canadian Light Source recently replaced its aging linear accelerator (linac) with one procured from Research Instruments GmbH (RI). The original linac operated at a frequency of 2856 MHz, which is not a harmonic of the 500 MHz booster ring rf. The two rf systems were not synchronized and the linac beam was rebunched into the booster rf buckets, causing losses of at least 33% at...
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Michael Kaemingk (Los Alamos National Laboratory)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
Distributed drive linear accelerators (DDLs), in which each accelerating cell is independently powered, offer the flexibility to set the phase and amplitude of the RF fields in each cavity individually. In the limiting case of a linac composed entirely of independently-driven single-cell cavities, the RF power required per individual cavity can be a good match to the capabilities of...
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Dr John Lewellen (Los Alamos National Laboratory)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
We present a COMSOL Multiphysics®–based workflow, using the Optimization Module, to increase RF cavity shunt impedance (Rsh) by systematically reshaping the nose cones. The cavity being optimized is utilizing the Ceramic Enhanced Accelerating Structure (CEAS) approach with a ceramic tube insert at the inner electric field zero of the TM020 mode, which increases the efficiency by reducing power...
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Enrico Chesta (European Organization for Nuclear Research)19/05/2026, 16:00MC8.U06: EnvironmentInvited poster
The CERN Innovation Programme on Environmental Applications (CIPEA) was launched in 2022 as a call for ideas to stimulate novel environmental applications based on CERN’s technologies, scientific expertise and unique research infrastructure. CIPEA has since evolved into an integrated framework encompassing many CERN initiatives aimed at generating environmental impact beyond the Organization’s...
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Mr Jordan Byrne (University of Manchester, Cockcroft Institute)19/05/2026, 16:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationPoster Presentation
Laser Wakefield Acceleration (LWFA) enables GV/m acceleration gradients, promising compact accelerator designs with advantages in cost, environmental impact and portability. Standard LWFA schemes can suffer from poor shot-to-shot stability and beam quality, resulting in broad energy spectrums, beam current variations, high emittance and limited intensity. External injection schemes attempt to...
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Cornel Dinu Cirdei (Horia Hulubei National Institute for R and D in Physics and Nuclear Engineering, Universitatea Națională de Știință și Tehnologie Politehnica București)19/05/2026, 16:00MC7.T09: Normal Conducting MagnetsPoster Presentation
The ELI-GBS LINAC, designed to accelerate electrons up to 800 MeV, employs 23 quadrupole and 2 dipole magnets for beam focusing, steering and bending toward two diagnostic lines. Factory and laboratory measurements confirmed that both magnet types meet design specifications, with quadrupoles achieving high field homogeneity and dipoles exceeding integrated bending field requirements while...
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2519. Characterization of RF breakdown dynamics in a C-band distributed-coupling structure (TUP7322)Sophia Morton (SLAC National Accelerator Laboratory)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
Increasing accelerating gradients of accelerating structures promises higher particle energies, while reducing the total footprint and cost. Characterizing RF breakdown effects is crucial when pushing to higher gradients, as RF breakdown changes the reflected and transmitted power flow in traditional accelerators and can cause loss of operation and surface damage. In this work, we study low...
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Jan Mezger (Max Planck Institute for Physics), Jan Mezger (Max Planck Institute for Physics)19/05/2026, 16:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationPoster Presentation
AWAKE uses a long relativistic proton bunch (400 GeV, 48 nC) to drive wakefields in plasma. The amplitude of the wakefields increases along the plasma as the bunch undergoes self-modulation (SM). Wakefields are energy deposited in the plasma that must dissipate, a fraction of which is emitted as light. We measure the amount of light emitted to study the development of the wakefield amplitude...
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Chin-Kang Yang (National Synchrotron Radiation Research Center)19/05/2026, 16:00MC7.T10: Superconducting MagnetsPoster Presentation
The second-generation high-temperature superconductor (2G-HTS) is under consideration for accelerator applications because its operating temperature, which is higher than 4.2 K, eliminates the need for liquid helium. However, the relatively low engineering critical current, inter-layer insulation challenges, welding reliability and quench protection remain key technical issues. In this work,...
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Frédéric Le Pimpec (Canadian Light Source (Canada))19/05/2026, 16:001MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
In 2024, the CLS linac injector was removed and exchanged with a newer more compact injector capable of 10 Hz operation and producing an electron beam of 250 MeV. Unfortunately the commissioning did not go as planned and the facility stayed dark 1 year longer than planned. We are summarizing what it took to provide beam to our users and the plan to remediate to the existing deficiencies and...
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Andreas Peters (Heidelberg Ionenstrahl-Therapie Centrum)19/05/2026, 16:00MC8.U01: Health & BiologyInvited poster
There are different accelerator types used for proton therapy of diverse tumours. In use are mostly classical cyclotrons, synchrocyclotrons and synchrotrons. In addition, linear accelerators were or are under development. This paper will give an overview on commercially available systems. Not only technical aspects are discussed, but also new developments in treatment methods like ARC and...
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Jürgen Bundesmann (Helmholtz-Zentrum Berlin für Materialien und Energie)19/05/2026, 16:00MC8.U01: Health & BiologyPoster Presentation
The HZB cyclotron accelerator complex provides 68 MeV protons for therapy and related research. The main accelerator is an isochronous sector cyclotron served by two injectors.
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The treatment room is fixed according to the regulatory agencies and the adjoining experimental station is often overbooked with users for radiation hardness test and dosimetry. To widen the irradiation possibilities,... -
Yuhui Dong (Institute of High Energy Physics, Chinese Academy of Sciences)19/05/2026, 16:001MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
High Energy Photon Source (HEPS) is a 4th generation synchrotron radiation facility built in Beijng, China. The designed electron energy of HEPS is 6GeV and the emmitance is lower than 0.1nmrad. This machine can provide the hard X-ray with brilliance higher than 1022ph/s/mm2/mrad2/0.1%BW and photon energy higher than 300keV.
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The construction of HEPS started in June 2019, including a 500MeV... -
Bhuban Kumar Sahu (Inter-University Accelerator Centre)19/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Invited poster
A compact THz facility, based on Free Electron Laser (FEL) system has been commissioned at Inter University Accelerator Centre (IUAC), New Delhi. The design of the facility is based on pre-bunched FEL where a train of electron micro-bunches having maximum energy of 8 MeV are intended to be injected into a short undulator to produce the THz radiation in the range of 0.18 - 3.0 THz. The...
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Haisheng Xu (Institute of High Energy Physics, University of Chinese Academy of Sciences)19/05/2026, 16:00MC2.A24: Photon sources: Accelerators and Storage Rings, OtherPoster Presentation
The High Energy Photon Source (HEPS) is the first fourth-generation synchrotron light source in Asia. In HEPS storage ring, there are five 166.6 MHz superconducting cavities serving as fundamental cavities and two 499.8 MHz superconducting cavities as active third harmonic cavities. The employment of active harmonic cavities enables ‘ideal bunch lengthening’ at any beam current, laying a...
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Francesco Schillaci (ELI Beamlines Czech Republic)19/05/2026, 16:00MC3.T25: Advanced techniques/Novel sources: LasersPoster Presentation
The ELIMAIA–ELIMED user beamline at ELI Beamlines provides a versatile platform for acceleration, selection, and application of laser-driven ion beams. Designed to bridge laser–plasma acceleration research with multidisciplinary applications, it combines the L3 Petawatt laser with a particle beam transport, diagnostic, and dosimetry system named ELIMED.
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In this contribution, we present the... -
Joel Valerian (The University of Melbourne)19/05/2026, 16:00MC2.T02: Photon sources: Electron SourcesPoster Presentation
The University of Melbourne’s X-band Laboratory for Accelerators and Beams (X-LAB) is developing a compact electron linear accelerator. The injector system will consist of a 100 keV DC photogun, a pulsed UV laser, an S-band (2.9985 GHz) RF buncher, and magnetic elements for beam transport. This paper reports on the commissioning of the injector system. We present the characterisation of the...
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Zhe Duan (Institute of High Energy Physics)19/05/2026, 16:00MC2.T12: Photon sources: Beam Injection/Extraction and TransportPoster Presentation
The High Energy Photon Source (HEPS) adopts on-axis
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swap-out injection to relax the dynamic-aperture requirement of its ultralow-emittance storage ring. To provide
high-charge bunches for swap-out operation, a booster-based
beam-recycling scheme has been developed, in which a depleted storage-ring bunch is extracted, transported to the
booster, combined with a newly accelerated bunch at... -
Duan Gu (Shanghai Advanced Research Institute)19/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
The SHINE Linac consists of fifty-four 1.3GHz cryomodules and two 3.9GHz cryomudules, which can provide 8GeV high-repetition rate electron bunches. The commissioning of the first Linac section (L1) was carried out from August to November 2025. In this work, We present an overview of the commissioning results, including the achieved beam parameters, machine optimization strategy, injector...
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Sami Tantawi (Arizona State University)19/05/2026, 16:00MC7.T31: Subsystems, Technology and ComponentsPoster Presentation
We present an all-metal RF load that uses a series of mode conversions within an overmoded planar waveguide to extend the device's effective electric length. We present devices with two, three, and four modes operating simultaneously to achieve uniform power absorption across the broad side of the planar waveguide. The guide is made of highly conducting material, copper or aluminum, with a few...
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Manon Boucard (AVELION)19/05/2026, 16:00MC8.A28: Applications: Industrial AcceleratorsPoster Presentation
The progressive replacement of radioactive sources is stimulating growing interest in compact linear accelerators, which are better suited for field deployment. Such systems must emphasize modularity, transportability, and, above all, reliable performance under operational conditions.
This work introduces a family of compact X-band linear accelerators designed to produce electron beams in...
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Michael Ehrlichman (SLAC National Accelerator Laboratory)19/05/2026, 16:00MC2.A24: Photon sources: Accelerators and Storage Rings, OtherPoster Presentation
Electron storage ring light sources rely exclusively on RF cavities to restore energy to the beam that is lost to photon emission. A limitation of RF is that it can store particles in only a small region of the RF waveform, yielding a bunched beam. Only a few percent of the ring circumference actually contains charge. Thus, high average current entails high peak current. While high average...
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Adam Steinberg (The University of Melbourne)19/05/2026, 16:00MC7.T34: Permanent MagnetsPoster Presentation
Permanent magnet Halbach arrays can be used for beam steering and focusing for synchrotron light sources, Fixed Field Accelerators, and plasma accelerators. Conventional implementations require many custom wedge-shaped magnets with tailored geometries and magnetisation angles, preventing material reuse. We present a method for constructing Halbach arrays from many identical rectangular...
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Yin Kang (Shanghai Advanced Research Institute, Chinese Academy of Sciences)19/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
High-power, continuously tunable narrowband terahertz (THz) sources are essential for advancing nonlinear optics, THz-driven material dynamics, and ultrafast spectroscopy. Conventional techniques typically impose a trade-off between pulse energy and frequency tunability. Here, we demonstrate a novel free-electron laser approach that overcomes these limitations by pre-modulating a relativistic...
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Guangjiang Li (Brookhaven National Laboratory), Silvia Verdu-Andres (Brookhaven National Laboratory)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
In the Electron–Ion Collider (EIC), we plan to use 24.6 MHz normal-conducting cavities to provide 600 kV in the Hadron Storage Ring (HSR) for beam capture, acceleration, and transition crossing. The existing four 28 MHz cavities have been operating in RHIC for more than twenty years. To reduce costs, we will reuse their large outer conductor, power amplifier, and associated components for the...
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Jincheng Xiao (University of Science and Technology of China)19/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
The Ultra-fast Transient Experimental Facility (UTEF) at Chongqing University is currently constructing a 500MeV storage ring. This paper investigates the transverse coupled-bunch instabilities (TCBI) critical to its high-current operation. Building on a method previously developed at Diamond Light Source—which enables the calculation of all coupled-bunch instability modes within a single...
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Robert Ruprecht (Karlsruhe Institute of Technology)19/05/2026, 16:00MC3.A16: Advanced techniques/Novel sources: Advanced ConceptsPoster Presentation
The goals of the cSTART storage ring at Karlsruhe Institute of Technology (KIT) are to demonstrate the storage of ultra-short electron bunches and study their non-equilibrium dynamics. Furthermore, it aims to study the application of laser-plasma accelerators (LPAs) as injectors for storage rings. To allow the direct injection of LPA bunches with comparably large energy spread, cSTART has a...
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Dr Wei-Yuan Chiang (National Synchrotron Radiation Research Center)19/05/2026, 16:00MC7.T08: RF Power SourcesPoster Presentation
The NSRRC Taiwan Photon Source (TPS) LINAC system consists of a DC thermionic electron gun, a Sub-Harmonic Pre-Buncher, a Primary Buncher, a Final Buncher, three S-band LINAC sections, and three 35-MW S-band klystrons. The TPS LINAC was designed by Research Instruments (RI). In the original design, the S-band klystrons were Thales TH2100A tubes. Due to unstable production quality in recent...
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Yi-Chen Yang (National Synchrotron Radiation Research Center)19/05/2026, 16:00MC7.T14: Vacuum TechnologyPoster Presentation
The TPS is currently operating at a beam current of 500 mA for users. Until now, 17 insertion devices have been installed in the straight vacuum sections, and the associated vacuum components have been upgraded. The average vacuum pressure of the storage ring is 8.5 nPa, and the beam lifetime under 500 mA operation is approximately 6 hours. The behavior of vacuum readings, the pressure...
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Salim Ogur (Thomas Jefferson National Accelerator Facility)19/05/2026, 16:00MC3.T39: Advanced techniques/Novel sources: Positron sourcesPoster Presentation
A continuous wave (CW) positron source, as proposed Ce+baf at Jlab, produces positron beams of variable yield and polarization. Depending on users’ preferences, the Ce+baf positrons from the target needs to be selected and captured before being delivered to CEBAF linac at an energy of 123 MeV. An SRF cavity-solenoid capture scheme is proposed to accelerate and capture the CW positron beam...
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Chenzhi Xu (Shanghai Institute of Applied Physics)19/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
In the design of high-power attosecond X-ray free-electron laser (XFEL) pulses, strongly coupled collective effects and many tunable parameters turn layout and parameter choice into a challenging multi-objective optimization issue. Conventional evolutionary approaches such as NSGA-II and NSGA-III require a very large number of high-fidelity start-to-end simulations, which makes systematic...
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Lewis Boulton (Deutsches Elektronen-Synchrotron DESY)19/05/2026, 16:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationPoster Presentation
Electron bunches internally injected into plasma accelerators reach relativistic energies in giga-volt-per-metre-level fields, reducing emittance growth due to space charge and ultimately yielding high-brightness beams.Density downramps with steep gradients have provided an effective method of controllable injection into beam-driven plasma-wakefield accelerators, but previously have relied on...
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Kai Tian (SLAC National Accelerator Laboratory)19/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
Stripline kickers are widely used in particle accelerators. This paper presents the design of a fast stripline kicker operating at 1.28 MHz to enable pseudo-single-bunch mode in SPEAR3. The combination of the required kick strength and the high repetition rate creates significant challenges, primarily beam-induced heating of the kicker structure. The physics and mechanical designs were...
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Masanori Wakasugi (Kyoto University)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
The RIKEN SCRIT facility that involves an electron storage ring (SR2) is a dedicated RI-electron scattering experiment. In the SCRIT system, the target RI ions are confined at high density on the beam axis by the focusing force provided by the electron beam itself. Therefore, electron beam stability is essential to increase the luminosity and maintain it for a sufficient time during scattering...
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Wenbin Ma (High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences)19/05/2026, 16:00MC7.T10: Superconducting MagnetsPoster Presentation
Super Tau Charm Facility (STCF) is the third-generation e+-e- collider under design and R&D with a circumference of about 800-900 m, a center-of-mass energy range from 2-7 GeV and design luminosity higher than 0.5 x 1035 cm-2 s-1, about 100 times higher than BEPC-II. To squeeze the beam for higher luminosity, compact twin-aperture high gradient interaction region superconducting magnet (IRSM)...
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Zichen Zhong (University of Science and Technology of China)19/05/2026, 16:00MC7.T16: Pulsed Technology (magnet and power supplies)Poster Presentation
Abstract:
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The Super Taume-Charm Facility (STCF), a new generation of electron-positron collider led by the University of Science and Technology of China, requires a high-quality positron source to sustain high-luminosity continuous operation. The Adiabatic Matching Device (AMD) is a critical component for positron focusing, its excitation pulse source requires a peak current ≥15 kA and a... -
Xiaoxia Huang (Shanghai Synchrotron Radiation Facility)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
The dual-mode microwave structure is receiving increasing attention and research. In the application of dual-mode structures, it is necessary to solve the problem feeding microwave power at different frequencies. One method is to use complex waveguide components, such as first and second harmonic photocathode bimodal gun, which consists of the assembly of the directional coupler and the mode...
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Dmitry Gudkov (Lawrence Berkeley National Laboratory)19/05/2026, 16:00MC2.A24: Photon sources: Accelerators and Storage Rings, OtherPoster Presentation
The Advanced Light Source Upgrade (ALS-U) is an ongoing project at Berkeley Lab to transform the ALS into a fourth-generation synchrotron light source. To minimize the ALS users facility down time, the ALS-U Storage Ring (SR) is composed of 48 unique, highly integrated modules, each split into approximately 11 subsystems. There are over 3000 unique physical interfaces across the system, with...
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BaoHou Liu (University of Science and Technology of China)19/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
The Hefei Advanced Light Facility (HALF) is a fourth generation synchrotron light source under construction, centered on a 2.2 GeV diffraction limited storage ring (DLSR) with a design natural emittance below 86 pm·rad. The storage ring has a circumference of nearly 480 m and contains 880 magnets in 20 lattice cells, including longitudinal gradient bends (LGB), reverse bends (RB), quadrupoles...
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Yelong Wei (University of Science and Technology of China)19/05/2026, 16:00MC7.T13: CryogenicsPoster Presentation
A 3rd harmonic superconducting (SC) cavity working at 1.5 GHz is required to improve beam lifetime and provide Landau damping by lengthening the bunch without energy spread for storage ring of Hefei Advanced Light Facility(HALF). The cryostat, which is used to create a liquid helium temperature environment for the SC cavity, is a key device for stable operation of this SC cavity. This paper...
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Garam Hahn (Pohang Accelerator Laboratory)19/05/2026, 16:00MC2.T12: Photon sources: Beam Injection/Extraction and TransportPoster Presentation
The Korea-4GSR project is a 4-GeV diffraction-limited storage ring characterized by an ultra-low emittance of 60 pm and a stored beam current of up to 400 mA. The electron beam is accelerated to 200 MeV by a linear accelerator and further to 4 GeV by a booster synchrotron before top-up injection into the storage ring. This paper presents the specifications of the kickers and septa required for...
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Chin-Kang Yang (National Synchrotron Radiation Research Center)19/05/2026, 16:00MC2.T12: Photon sources: Beam Injection/Extraction and TransportPoster Presentation
The Taiwan Photon Source (TPS) currently utilizes a direct-drive type septum magnet for beam injection. To reduce the impact of stray magnetic fields on the stored beam during injection, we propose a conceptual design of an eddy current type septum as a replacement. This design is expected to significantly suppress leakage fields near the stored beam, thereby minimizing orbit distortion and...
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Xueying Lu (Northern Illinois University)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
High-gradient operation of normal-conducting radiofrequency (RF) cavities is fundamentally limited by RF breakdown, a phenomenon driven by processes including field emission, surface heating, multipacting and plasma formation. Recent studies have indicated that operating the cavities in a short-pulse regime, with RF pulses of only a few nanoseconds long, can modify the onset and dynamics of...
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Peizhi Fang (Tsinghua University)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
To meet the energy compensation requirements of Steady-State Micro-Bunching (SSMB), a 20 MHz RF cavity with extreme axial compactness is essential. This paper presents an innovative triple-folded quarter-wave cavity design that overcomes the size limitations of conventional structures. Based on cascaded transmission line theory, we established an analytical model to optimize the cavity’s shunt...
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Yelong Wei (University of Science and Technology of China)19/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
A 3rd harmonic superconducting (SC) cavity is being developed for lengthening bunch and improving beam lifetime in the Hefei Advanced Light Facility (HALF) storage ring. This SC cavity is excited by an electron beam with 350 mA current, 1 nC charge, and ~6.7 ps length and requires strong damping of higher-order-modes (HOMs) in order to meet beam instability requirements. This paper presents...
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Dinghui Su (Shanghai Institute of Applied Physics, University of Chinese Academy of Sciences)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
Ultra-low emittance is one of the primary directions for the development of synchrotron radiation facilities. To mitigate coupled-bunch instabilities and meet beam-lifetime requirements, higher-harmonic cavities are commonly required in diffraction-limited storage rings. Bimodal cavities are considered multifunctional and compact accelerating structures capable of integrating the functions of...
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JunHao Liu (Shanghai Advanced Research Institute)19/05/2026, 16:00MC2.A23: Other Linac Based Photon SourcesPoster Presentation
High energy resolution is essential for advanced spectroscopic studies of quantum materials, especially for resolving low-energy electronic features in angle-resolved photoemission spectroscopy (ARPES). However, existing light sources for ARPES still face difficulties in simultaneously providing narrow bandwidth and high photon flux. We are developing a 10-MHz coherent light source based on...
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Yusen Guo (Shanghai Synchrotron Radiation Facility)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
FLASH radiotherapy (FLASH-RT) demonstrates the potential to maintain tumor control while reducing normal tissue toxicity through ultra-high dose rates. This paper presents a novel compact X-band (9.3 GHz) accelerating system designed for FLASH-RT applications. The core innovation is a dual-structure common-source architecture: the first structure provides a fixed 6 MeV energy gain, while the...
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Jun Wang (Shanghai Advanced Research Institute)19/05/2026, 16:001MC7.T15: Technology: Undulators and WigglersPoster Presentation
Undulators are key insertion devices in synchrotron radiation and free-electron laser (FEL) facilities, where shortening the magnetic period is a crucial technical route to achieving compact machines and short-wavelength radiation. In our previous work, we proposed and experimentally validated an ultra-compact planar undulator that provides about a 48% increase in magnetic field strength...
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Vitaliy Goryashko (Uppsala University)19/05/2026, 16:00MC2.A08: Photon sources: Linear AcceleratorsPoster Presentation
SACLA, the most compact hard-X-ray free-electron laser, has delivered user beamtime reliably for more than a decade. To satisfy growing demand, a linac upgrade is planned to reach kHz-class repetition rates with higher brightness. At the heart of this program is a new injector derived from the existing pulsed DC gun with a thermionic cathode, chosen for its proven beam quality, stability and...
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Hao-Wen Luo (National Synchrotron Radiation Research Center)19/05/2026, 16:00MC2.T12: Photon sources: Beam Injection/Extraction and TransportPoster Presentation
The nonlinear kicker injection scheme is a potential option for the future Taiwan Photon Source. Compared to the current four-bump injection scheme, which occupies the entire 12-meter-long straight section, the nonlinear kicker requires only a few tens of centimeters in length. A new booster-to-storage-ring transfer line has been designed to create additional space for installing more...
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Zhengkai Wang (Tsinghua University)19/05/2026, 16:00MC2.T12: Photon sources: Beam Injection/Extraction and TransportPoster Presentation
Steady-State Microbunching(SSMB) light source is a highly potential new type of light source, which combines the advantages of synchrotron radiation and FEL. It possesses the characteristic of both high repeat frequency and high peak power. In order to build such a light source, we are trying to design a 20ns, 0.7A burst mode injector to produce high brightness electron beam, and we have...
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Yelong Wei (University of Science and Technology of China)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
This paper presents the design of an improved SLED pulse compressor for our beam test platform at National Synchrotron Radiation Laboratory (NSRL). It consists of a 3 dB hybrid, a TE10-TE01 mode converter, and a resonator storage cavity. Through geometrical optimizations, the resonator is designed to operate in the TE0,1,10 mode, which offers a high intrinsic quality factor while maintaining...
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Baiting Song (Tsinghua University)19/05/2026, 16:00MC2.A29: Ultrafast electron diffraction and ultrafast electron microscopyPoster Presentation
To address the electron source requirements for continuous-wave (CW) MeV electron microscopes (MV EM), we developed an L-band, normal-conducting (NC), CW accelerating structure operating in π-mode. With an input radiofrequency (RF) power below 20 kW, the accelerating structure delivers GHz bunch trains, accelerating electrons from 200 keV to 1.1 MeV. Comprehensive geometry optimization,...
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Chengzhe Wang (University of Science and Technology of China)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
This paper presents the design of a compact and efficient rectangular waveguide TE10 to circular waveguide TE01 mode converter operating in the X-band. By incorporating two choke slots, the design achieves a high-purity circular waveguide TE01 mode. The optimized results show that at the operating frequency of 11.424 GHz, the conversion efficiency for the circular waveguide TE01 mode is...
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Guimei Wang (Brookhaven National Laboratory)19/05/2026, 16:00MC2.A24: Photon sources: Accelerators and Storage Rings, OtherPoster Presentation
A novel Complex Bend (CB) magnet design has been developed at NSLS-II to support the future storage ring upgrade toward near-diffraction-limited performance. The CB concept replaces conventional dipole electromagnets with compact permanent-magnet combined-function elements, providing both strong focusing and bending within a single curved assembly. The NSLS-II upgrade will implement 120 CBs to...
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Tianlong He (University of Science and Technology of China)19/05/2026, 16:00MC7.T14: Vacuum TechnologyPoster Presentation
The design of a distributed pumping system using NEG (Non-Evaporable Getter) strips for the slender beam pipes of the Hefei Advanced Light Fa-cility (HALF) is presented. To achieve a high pumping speed and pumping capacity in a limited pumping space, a NEG strip with distributed pumping capacity was considered. A prototype of HALF vacuum cham-ber, which can be inserted into NEG strip and...
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Guanzheng Wu (University of Science and Technology of China)19/05/2026, 16:00MC7.T34: Permanent MagnetsPoster Presentation
In the fourth-generation light sources, storage ring lattices are typically compact, potentially leading to serious cross-talk effects. Reducing the leakage field of a magnet offers an effective solution. In this paper, a novel permanent dipole magnet structure is proposed to address the magnetic flux leakage in conventional designs. Compared to traditional steel sheet shielding, this...
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Hideki Dewa (Japan Synchrotron Radiation Research Institute)19/05/2026, 16:00MC7.T14: Vacuum TechnologyPoster Presentation
SPring-8-II, the forthcoming fourth-generation light source upgrade of SPring-8, aims to achieve X-ray brilliance approximately two orders of magnitude higher than that of the current facility by reducing the electron beam emittance to 100 pm·rad or less. To accommodate the narrow-bore five-bend lattice, the vacuum system features discrete photon absorbers with dedicated pumps along with...
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Zexin Cao (University of Science and Technology of China)19/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
Design studies of a high-power infrared-terahertz free-electron laser facility are presented. The facility is based on a high-repetition-rate superconducting linac and is designed to generate electron beams with energies up to about 60 MeV. A third-harmonic linearizing cavity and a C-type magnetic chicane are used to control the longitudinal phase space of the bunch. Start-to-end beam dynamics...
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Takao Asaka (National Institutes for Quantum Science and Technology)19/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
The high-brightness synchrotron radiation facility “NanoTerasu” provides users with extremely stable synchrotron radiation by top-up injecting an electron beam from a 3-GeV linear accelerator into a diffraction-limited storage ring. NanoTerasu plans to develop a soft X-ray free-electron laser (SX-FEL) using the linear accelerator. To realize SX-FEL with practical gain length, it is required...
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Zhicheng Huang (University of Science and Technology of China)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
To meet the requirement for high-gradient accelerating structures in future compact accelerator systems, this work presents the design, fabrication, and preliminary testing of an X-band 11.424 GHz parallel-coupled accelerating structure. The structure consists of 16 cells and operates in the π mode, with an optimal filling time of approximately 50 ns under over-coupling conditions. The...
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Chengzhe Wang (University of Science and Technology of China)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
An improved TM020-mode RF cavity has been developed for the collider rings of the Super Tau-Charm Facility (STCF). By utilizing a higher TM020-mode for beam acceleration, this cavity has a lower R/Q = 83.5 Ω and a higher unloaded Q = 61300, compared with conventional TM010-mode cavities. These characteristics help reduce the required detuning frequency and significantly suppress coupled-bunch...
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Jack Hirschman (Stanford University, SLAC National Accelerator Laboratory)19/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
Next-generation XFELs require electron beams with reproducible current profiles, reduced longitudinal curvature, and stable compression behavior. At LCLS-II, we employ a hybrid programmable-laser architecture: combining IR-domain programmable shaping with dispersion-controlled nonlinear synthesis (DCNS)*, to generate tuned flattop ultraviolet (UV) temporal profiles that reshape the...
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Chunguang Jing (Euclid Techlabs (United States))19/05/2026, 16:00MC3.A16: Advanced techniques/Novel sources: Advanced ConceptsInvited poster
Structure Wakefield Acceleration (SWFA) powered by ultra-short RF pulses (~10 ns) generated by Two-Beam Acceleration (TBA) at the Argonne Wakefield Accelerator (AWA) has demonstrated effective suppression of RF breakdowns and achieved gradients exceeding 400 MV/m at X-band frequencies. To fully exploit the benefits of this short RF pulse operation, an accelerating structure must simultaneously...
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Noppharit Wasanbongngem (Synchrotron Light Research Institute)19/05/2026, 16:001MC7.T15: Technology: Undulators and WigglersPoster Presentation
This paper details the development of Thailand’s first prototype in-vacuum wiggler (IVW). The project initiated with 3D magnetic field simulations using the RADIA package to define the optimal magnetic configuration. To verify their magnetic properties and ensure field quality, individual magnet blocks are characterized using a Helmholtz coil system operated via in-house developed control...
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Pei Zhang (Institute of High Energy Physics)19/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
The storage ring of the High Energy Photon Source (HEPS) is driven by 166.6 MHz β=1 quarter-wave superconducting cavities. Five higher-order-mode-damped 166.6 MHz cavities were designed to provide a total of 850 kW beam power and to accelerate the electron beam to 200 mA. The beamline elements of the module were designed to meet the compact requirements. Given the large beam aperture of 505 mm...
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Ningfei Wei (Institute of Modern Physics, Chinese Academy of Sciences)19/05/2026, 16:00MC7.T14: Vacuum TechnologyPoster Presentation
Particle accelerators are continuously advancing toward high repetition rates, aiming to provide higher energy and beam intensity for frontier research across multiple disciplines, including nuclear physics and life sciences. However, the increase in repetition rate intensifies the eddy current effects induced by high-frequency magnetic fields in the vacuum chamber walls, becoming a critical...
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Thanapong Phimsen (Synchrotron Light Research Institute)19/05/2026, 16:00MC7.T14: Vacuum TechnologyPoster Presentation
The development of the Siam Photon Source II (SPS-II), a fourth-generation light source, represents a significant leap in Thailand’s synchrotron infrastructure. A primary objective of the project is the establishment of domestic technical expertise and industrial capability for producing high-precision vacuum components. This paper details the manufacturing and geometric validation of two...
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Katsuya Okamura (High Energy Accelerator Research Organization)19/05/2026, 16:00MC7.T11: Power SuppliesPoster Presentation
Application of a 10 Hz fast-cycling induction synchrotron (IS) to the next generation of heavy ion therapy called Energy Sweep Compact Rapid Cycling Hadron Therapy (ESCORT), where the ion beam with energy sweeping is delivered tracking a tumor target in a deformed and moving organ and monitoring the irradiation dose profile in a real-time during irradiation, is under investigation* ** in the...
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Bao-Sheng Wang (National Synchrotron Radiation Research Center)19/05/2026, 16:00MC7.T11: Power SuppliesPoster Presentation
A modular GaN-FET-based fast corrector magnet power supply has been developed for the Taiwan Pho-ton Source (TPS). The high switching speed of GaN devices enables a significant increase in the output current bandwidth, which improves the response of the fast orbit feedback (FOFB) system and enhances the overall beam stability and photon beam quality of TPS. In the existing FOFB system, the...
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Carolina Amoedo (European Organization for Nuclear Research)19/05/2026, 16:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationPoster Presentation
Plasma wakefield acceleration (PWFA) is a promising route to compact, high-energy accelerators. Achieving TeV-scale electron energies for high-energy physics experiments requires multiple acceleration stages in electron-driven PWFA schemes, which remains a significant challenge.
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The AWAKE experiment at CERN explores a proton-driven approach, utilising the kJ-level energy of proton bunches... -
Hyeonjun Jang (Pohang Accelerator Laboratory)19/05/2026, 16:00MC7.T11: Power SuppliesPoster Presentation
The storage ring of the Korea-4GSR (Korea 4th Generation Synchrotron Radiation) facility currently under construction consists of a total of 1184 magnets, of which 792 are large-capacity magnets requiring rated currents of 140A or 280A.
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To drive these large-capacity magnets, magnet power supplies (MPSs) are required to support parallel operation in order to minimize the number of MPS types,... -
Mr Zichen Zhong (University of Science and Technology of China)19/05/2026, 16:00MC7.T08: RF Power SourcesPoster Presentation
This paper presents a highly integrated solid-state modulator designed to drive high-power klystrons in linear accelerators. The modulator employs a vertically integrated architecture in which the solid-state module array is directly combined with the high-voltage pulse transformer. This configuration eliminates long high-voltage cable connections, reduces parasitic inductance, and improves...
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Kei IMAMURA (Japan Synchrotron Radiation Research Institute)19/05/2026, 16:00MC7.T15: Technology: Undulators and WigglersPoster Presentation
In undulator development, strong attractive force acting between the top and bottom magnetic arrays is one of the important factors for determining the required specification of an undulator flame. An attractive force cancellation scheme using monolithic multipole magnets is implemented in In-Vacuum Undulator for SPring8-II(IVU-II) to relax the required specification. In theory, the scheme...
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Dennis Sauerland (University of Bonn), Henry Schumacher (University of Bonn)19/05/2026, 16:00MC8.U02: Materials Analysis and ModificationPoster Presentation
The Bonn Isochronous Cyclotron provides light ion beams with a charge-to-mass ratio Q/A ≥ 1/2 and kinetic energies below 14 MeV per nucleon to one of five experimental sites. It is planned to extend the facility’s analytic capabilities through the development and installation of an ion beam material analysis setup.
It is intended to use low energy alpha particles with energies between 2 and...
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Sebastian Lorenz (Extreme Light Infrastructure ERIC (Czech Republic))19/05/2026, 16:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationPoster Presentation
Laser–plasma acceleration experiments rely critically on advanced gas-target systems capable of delivering well-defined density profiles within a high-vacuum environment. The properties of the resulting particle beams and radiation are highly sensitive to the target’s density distribution, making precise control and characterization essential. In this contribution, we present the development...
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Yan Cong (Institute of Modern Physics, Chinese Academy of Sciences)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
The High Intensity Heavy-ion Accelerator Facility (HIAF) is currently under construction at the Institute of Modern Physics (IMP), Chinese Academy of Sciences. It aims to deliver high-intensity heavy-ion beams for exploring effective interactions within atomic nuclei, revealing the origin of heavy elements in the universe, and addressing key technical challenges related to irradiation effects....
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Katrina Howard (University of Chicago)19/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
Fermilab is one of the leaders in development of vapor diffused Nb3Sn films inside niobium cavities. This material has a higher critical temperature (Tc) than niobium, enabling cavity operation at 4.2 K. This higher operational temperature significantly reduces the infrastructure required for cooling compared to 2 K systems, making superconducting radio-frequency (SRF) technology more...
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Geonhee Choi (Korea Basic Science Institute)19/05/2026, 16:00MC2.T15: Photon sources: Undulators and WigglersPoster Presentation
Precise magnetic-field characterization of in-vacuum undulators is essential for achieving stable beam dynamics in synchrotron light sources. This work presents an in-situ measurement platform that integrates a SAFALI-based Hall probe scanner with a stretched-wire measurement system. The Hall probe unit measures the local magnetic-field distribution along the undulator, achieving...
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Wilfrid Farabolini (European Organization for Nuclear Research)19/05/2026, 16:00MC8.U01: Health & BiologyPoster Presentation
Very High Energy Electrons (VHEE) are an emerging radiotherapy modality offering magnetic steering and focusing for conformal treatments, with potential for compact, cost-efficient clinical systems. VHEE beams may also enable Ultra-High Dose Rate (UHDR) delivery for the FLASH effect, which can selectively spare healthy tissue while maintaining tumour toxicity. A key challenge is achieving...
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Sungil Kwon (Los Alamos National Laboratory)19/05/2026, 16:00MC7.T08: RF Power SourcesPoster Presentation
Because of aging, and product discontinuity, LANSCE is investigating the replacement of high power RF amplifi-ers. A promising candidate is the GaN solid-state power amplifier (SSPA). The outphasing technique provides high efficiency operation of the SSPA. A key element of the outphasing technique is the signal component separa-tor(SCS), which converts an Amplitude Modulation-Phase...
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Delphine Domange (European Organization for Nuclear Research)19/05/2026, 16:00MC1.A02: Lepton Circular CollidersInvited poster
The electron-positron Future Circular Collider (FCC-ee) will initially operate at the Z-pole energy of 45.6 GeV with beams composed of 12 000 bunches, storing a total energy of 17.5 MJ per beam. Combined with small emittances, this results in extremely high beam energy densities that pose a significant damage risk to accelerator components. A comprehensive
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assessment of powering failure... -
Yongtao Liu (Xihua University)19/05/2026, 16:00MC2.A08: Photon sources: Linear AcceleratorsPoster Presentation
Tong Chen (RefleXIon Medical Inc.)
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Hao Tao, Liang Huo, Tong Li, Zhen Feng, Lin Zhou, Yongtao Liu (Chengdu Elekom Vacuum Electron Technology Co. Ltd)
It has been commonly observed that the beam spot profile of compact standing wave linacs have a dual Gaussian distribution. Further study of this paper shows that the two Gaussian distribution is generated by different acceleration process... -
Jincheng Xia (University of Science and Technology of China)19/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
The dynamic aperture(DA) is one of the most important parameters of nonlinear beam dynamics in storage rings. It describes the transverse phase space region where the motion of a particle can remain stable. In the design and optimization of storage rings, long-term particle tracking is usually required to ensure an sufficient DA. However this process is very time consuming. This study explores...
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Ping-Shun Chuang (National Synchrotron Radiation Research Center)19/05/2026, 16:00MC7.T13: CryogenicsPoster Presentation
Liquid nitrogen (LN2) cooling is widely utilized in the cooling systems of superconducting devices and scientific instruments. During the cooling process, the boiling heat transfer mechanism plays a decisive role. When the solid surface temperature significantly exceeds the saturation temperature of the liquid nitrogen, the Leidenfrost effect occurs, forming a vapor film at the solid-liquid...
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Mariia Seniak (Lviv University)19/05/2026, 16:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationPoster Presentation
Laser wakefield acceleration is considered a promising and efficient method for increasing electron bunches energy. Despite advantages in acceleration gradients (accelerating field amplitudes up to 1 TV/m), the issue of dephasing between the electron bunch and the accelerating field, caused by the bunch energy gain, remains a complex task. The use of a conical plasma channel leads to an...
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Arthur Clairembaud (Max Planck Institute for Physics)19/05/2026, 16:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationPoster Presentation
The injection of the witness electron bunch in the AWAKE Run 2c experiments will occur in a $\sim30\,$cm gap separating two plasmas. In this gap, the $400\,$GeV, self-modulated drive proton bunch and witness bunch will co-propagate in a Rubidium vapor. This vapor will be partially ionized by the protons through impact ionization, and will thus result in the presence of a low-density...
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Henry Freund (University of Maryland, College Park)19/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
Recent progress in short wavelength free-electron lasers (FELs) from the extreme ultraviolet through x-rays has opened new avenues for industrial and research applications. Most such FELs rely on Self-Amplified Spontaneous Emission (SASE) in which the optical pulse grows from noise in a single pass through the undulator. However, this results in significant shot-to-shot fluctuations in the...
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Weibo Hu (University of Science and Technology of China)19/05/2026, 16:00MC7.T16: Pulsed Technology (magnet and power supplies)Poster Presentation
An 8-conductor nonlinear kicker (NLK) is proposed for the Hefei Advanced Light Facility (HALF) injection system. Its design is highly sensitive to conductor positions and must accommodate a vacuum chamber. This study develops an automated toolchain combining Opera-2D and Python with Bayesian optimization (Optuna) to search for feasible conductor configurations under strict magnetic and spatial...
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Gabriele Maria Grittani (Extreme Light Infrastructure ERIC (Czech Republic))19/05/2026, 16:00MC3.A15: Advanced techniques/Novel sources: New Acceleration Concepts and TechniquesInvited poster
Laser wakefield acceleration (LWFA) is the most compact technique to produce GeV electron beams as short as few fs. To achieve optimal LWFA conditions, the laser pulse energy, time duration and focal spot size must be properly set. Limiting factors to the maximum attainable energy are the depletion of the pump laser and the dephasing of the electrons with the accelerating field, since the...
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Dmitry Gudkov (Lawrence Berkeley National Laboratory)19/05/2026, 16:00MC2.A24: Photon sources: Accelerators and Storage Rings, OtherPoster Presentation
The ALS-U (Advanced Light Source Upgrade) project is an upgrade to the ALS at the Lawrence Berkeley National Laboratory.
The new multibend achromat (Storage Ring) will be installed in 16 months. To meet the tight schedule and space constraints, the 48 modules of magnets (called rafts) are prestaged and aligned in advance. All local electrical wiring is prestaged to reduce the installation...
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Xinghao Guo (Shanghai Advanced Research Institute)19/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
The SHINE project is a high-repetition-rate hard X-ray Free Electron Laser (XFEL) facility driven by a superconducting RF linear accelerator with an energy exceeding 8.0 GeV. The linear accelerator (LINAC) of SHINE consists of six hundred 1.3 GHz 9-cell cavities for acceleration, producing photons with energies ranging from 0.4 to 25 keV. This study focuses on the first single-cavity...
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Pavel Bláha (Extreme Light Infrastructure Beamlines)19/05/2026, 16:00MC8.U01: Health & BiologyPoster Presentation
With the growing interest in advanced radiotherapy approaches, laser-driven accelerators offer a potential alternative to conventional technologies. At ELI Beamlines, the ELIMAIA–ELIMED beamline has matured into an operational platform capable of delivering multi-shot laser-driven proton (LDP) beams for radiobiological studies. The system, powered by the L3 HAPLS 1 PW laser, currently provides...
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19/05/2026, 16:00MC2.A26: Photon sources: Compton sourcesPoster Presentation
The standard bow-tie (SBT) planar four-mirror optical enhancement cavity can amplify laser power, circulate laser pulses, and adjust the laser beam waist. It is widely applied in fields such as steady-state micro-bunching light sources, inverse Compton scattering light sources and fusion energy. However, the different effective radii of curvature in the sagittal and tangential directions vary...
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Xiazhen Xu (University of Science and Technology of China)19/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
Coherent terahertz (THz) radiation sources based on storage rings hold significant future for generating high-average-power THz radiation, owing to the high revolution frequency of the electron beam. However, the achievable repetition rate is limited by the long time required for the ring's damping mechanism to dissipate the phase-space perturbation introduced by the modulation and radiation...
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JianJun XIAO (ShanghaiTech Laboratory for Topological Physics, School of Physical Science and Technology, ShanghaiTech University, State Key Laboratory of Quantum Functional Materials, School of Physical Science and Technology, ShanghaiTech University)19/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
Conformal deposition of high-performance superconducting films on complex cavity geometries, particularly ensuring robust film-substrate adhesion, remains a fundamental challenge. We address this by introducing a novel high-power impulse magnetron re-sputtering and sputtering (HiPIMRS) system designed for uniform niobium (Nb) film deposition on the interior surfaces of 1.3 GHz copper cavities....
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Juwan Kim (Institute for Basic Science)19/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
The SSR2 superconducting cryomodule is analyzed in terms of static and dynamic heat loads and the associated entropy rates at the 2 K stage. The reference cryomodule contains six superconducting single-spoke resonator cavities. Static heat loads arise from conduction through cryomodule supports, couplers, cables, and beam-pipe interfaces, and from radiation through the insulation vacuum....
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Roberto Cala' (European Organization for Nuclear Research)19/05/2026, 16:001MC8.U08: Radiation EffectsPoster Presentation
The Beam Dump Facility (BDF) will host the Search for Hidden Particles (SHiP) experiment at CERN’s Super Proton Synchrotron. BDF/SHiP is designed to search for feebly interacting particles in a region of mass and coupling accessible only with a dedicated beam-dump configuration*. With a beam intensity of 4E19 POT per year at 400 GeV, the High-Intensity ECN3 (HI-ECN3) Project will enable the...
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Seohyeon An (Pohang Accelerator Laboratory)19/05/2026, 16:00MC2.A24: Photon sources: Accelerators and Storage Rings, OtherPoster Presentation
Korea-4GSR is a new 4 GeV synchrotron light source under construction since 2021, targeting ultralow emittance performance of 60 pm rad. To reach this regime, the lattice uses a hybrid multi-bend achromat (HMBA) configuration, which increases the number of magnets per cell resulting in magnetic cross-talk. The short magnet spacing may degrade field quality, perturbing particle orbits and...
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Yuta Kawase (Iwate University)19/05/2026, 16:00MC7.T16: Pulsed Technology (magnet and power supplies)Poster Presentation
In the J-PARC muon g-2/EDM experiment, precise control of the muon beam is essential to achieve the required measurement accuracy. For this purpose, the development of a new high-voltage and high-current pulse power supply(kicker power supply) is indispensable. Because the accuracy of the g-2 measurement strongly depends on the uniformity of the magnetic field, and the muon beam must remain...
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Foteini Asvesta (European Organization for Nuclear Research)19/05/2026, 16:00MC8.U01: Health & BiologyPoster Presentation
Within the framework of the Next Ion Medical Machine Study (NIMMS) collaboration at CERN, closed orbit correction schemes are developed for the Helium Light Ion Compact Synchrotron (HeLICS) - a novel synchrotron design in development for cancer treatment. Different options for closed orbit correction are presented, including the possibility of applying beam-based quadrupole alignment without...
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Amelia Pollard (STFC Daresbury Laboratory, Cockcroft Institute)19/05/2026, 16:00MC3.T02: Advanced techniques/Novel sources: Electron SourcesPoster Presentation
The Compact Linear Accelerator for Research and Applications (CLARA) at Daresbury Laboratory has recently undertaken an upgrade of its photocathodes from using a copper emission surface to using caesium telluride (Cs\textsubscript{2}Te). During the conditioning of the first Cs\textsubscript{2}Te cathode a significant number of RF breakdowns were detected, and so that cathode was replaced;...
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Omar Kamalou (Grand Accélérateur Nat. d'Ions Lourds)19/05/2026, 16:00MC3.A20: Advanced techniques/Novel sources: Radioactive IonsPoster Presentation
The GANIL facility (Grand Accélérateur National d’Ions Lourds) in Caen has been delivering stable and radioactive ion beams since 1982 for experimental research in nuclear physics, atomic physics, radiobiology, and materials science.
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At GANIL, radioactive ion beams are produced using two complementary approaches. The first is the Isotope Separation On-Line (ISOL) method implemented at the... -
Ward Wurtz (Canadian Light Source (Canada))19/05/2026, 16:00MC2.T12: Photon sources: Beam Injection/Extraction and TransportPoster Presentation
Due to linac operational issues, the Canadian Light Source has recently reduced the injection energy of its booster synchrotron from 250 MeV to 152 MeV. We found that we needed to be increasingly careful with the booster ring transverse tunes as we decreased the injection energy. We needed to make fine adjustments of the tunes during the low energy part of the ramp, requiring new software. ...
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Lanpeng Ni (Shanghai Institute of Applied Physics)19/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
X-ray frequency combs (XFCs) hold significant potential for advanced applications in precision spectroscopy, resonant inelastic X-ray scattering (RIXS), and fundamental physics studies. This paper reports on the experimental preparation for generating high-power tunable XFCs at the Shanghai soft X-ray Free-Electron Laser facility (SXFEL). Building on our theoretical framework, we have...
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Charles Zhang (Cornell University (CLASSE))19/05/2026, 16:00MC2.T02: Photon sources: Electron SourcesPoster Presentation
We use the PHOEBE test beamline at Cornell to experimentally demonstrate a simple method for reconstructing the transverse 4D phase space of an electron beam at the source from downstream aperture scans of the beam. This method does not rely on detailed knowledge of the beamline transport, besides assuming that linearity and symplecticity are satisfied. We apply this method to measure the...
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HeeSu Park (Kiswire Advanced Technology Ltd.)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
The KU–KEK–KAT collaboration produced a 1.3 GHz copper 9-cell cavity with the goal of establishing a domestic Nb cavity fabrication flow in Korea, and performed pre-process verification under the same conditions as the Nb fabrication procedure. Prior to fabrication, the reliability of the actual manufacturing was enhanced through EM simulations and engineering simulations using CST, and the...
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Natalya Winters (GSI Helmholtz Centre for Heavy Ion Research, Facility for Antiproton and Ion Research)19/05/2026, 16:001MC8.U11: Outreach and CommunicationsPoster Presentation
The Facility for Antiproton and Ion Research (FAIR), currently under construction in Darmstadt, Germany, is one of the largest and most technically challenging research infrastructure projects in Europe. The project combines large-scale civil construction, complex accelerator and infrastructure systems, and scientific installations within a highly interconnected international project...
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Dr Weilun Qin (Institute of High Energy Physics, Chinese Academy of Sciences)19/05/2026, 16:00MC2.A04: Photon sources: Circular AcceleratorsPoster Presentation
X-ray Free-Electron Laser Oscillators (XFELOs) driven by Diffraction Limited Storage Rings (DLSRs) promise ultra-narrow-bandwidth X-rays at high repetition rates. However, simulating the multi-pass laser build-up and saturation is a severe computational bottleneck. We present a simplified and highly efficient fast modeling framework for DLSR-XFELOs, which is capable of capturing power growth,...
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Yuting WANG (Laboratoire de Physique des 2 Infinis Irène Joliot-Curie)19/05/2026, 16:00MC3.T39: Advanced techniques/Novel sources: Positron sourcesPoster Presentation
A high-performance positron source is a crucial component of FCC-ee delivering the low-emittance, high-intensity beams. In particular, operation at the Z pole demands positron bunch charges of up to 5 nC at the Damping Ring (DR) injection. In the Feasibility Study Report, the positron source concept is based on a 2.86 GeV electron drive beam impinging on a 15 mm tungsten target. The capture...
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Dr Weilun Qin (Institute of High Energy Physics, Chinese Academy of Sciences)19/05/2026, 16:00MC2.A04: Photon sources: Circular AcceleratorsPoster Presentation
X-ray Free-Electron Laser Oscillators (XFELOs) utilize Bragg crystal-based x-ray cavities to generate high-brightness x-ray pulses with ultra-fine bandwidth. The successful realization of XFELOs would greatly benefit high-resolution photon-hungry experiments, such as nuclear resonant scattering and inelastic x-ray scattering. Existing XFELO proposals, constrained by either the electron beam...
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Jiawen Kan (Institute of High Energy Physics)19/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
Nb₃Sn (Tc ≈ 18.3 K, μ₀H_sh ≈ 400 mT) is a leading candidate for next-generation SRF cavities, and its deposition on copper offers further gains in cost and cryogenic heat load. Uniform coating and reliable adhesion on the curved inner surface of a closed cavity, however, remain a key challenge for magnetron sputtering.
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A 6 GHz oxygen-free copper cavity was therefore fabricated as two... -
Marco Hartmann (TRIUMF)19/05/2026, 16:00MC2.T02: Photon sources: Electron SourcesPoster Presentation
The CANadian Rare isotope facility with Electron Beam
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ion source (CANREB) is an important component of the
Advanced Rare IsotopE Laboratory (ARIEL) at TRIUMF.
CANREB will deliver highly charged radioactive ion (HCI)
beams for post-acceleration to nuclear physics experiments.
Ion beams injected into CANREB are bunched using a ra-
diofrequency quadrupole (RQB) cooler-buncher and... -
Salim Ogur (Thomas Jefferson National Accelerator Facility)19/05/2026, 16:00MC2.A08: Photon sources: Linear AcceleratorsPoster Presentation
The electron beam degrader in the Continuous Electron Beam Accelerator Facility (CEBAF) injector at Jefferson Lab serves to generate electron beams with transverse emittance over 10x the nominal values, with the ultimate goal of using degraded electron beams to measure machine acceptance. Electron beams are degraded through multiple scattering in thin carbon foils, and maximum transverse...
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Axel Bernhard (Karlsruhe Institute of Technology)19/05/2026, 16:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationPoster Presentation
A transport line for laser-plasma accelerated electrons is proposed based on the fixed-field alternating gradient accelerator (FFA) concept. To accommodate the large LPA energy spread and match the beam to a transverse gradient undulator (TGU), the lattice incorporates matching cells with high-temperature superconducting quadrupoles providing gradients up to 220 T/m, along with a compact FFA...
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Dinh Nguyen (xLight Incorporated)19/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
Extreme Ultraviolet (EUV) lithography has established itself as a key technology in the semiconductor chip manufacturing that supports many aspects of life in modern society. Almost all current EUV lithography tools use plasma-based light sources that deliver broad-band EUV emission from laser-irradiated molten tin droplets [1]. These standalone plasma-based EUV light sources are inefficient...
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Ibrahim Kesgin (Argonne National Laboratory)19/05/2026, 16:001MC7.T15: Technology: Undulators and WigglersPoster Presentation
The Advanced Photon Source (APS) continues to advance short-period superconducting undulator (SCU) technology using NbTi, Nb₃Sn, and 2G-HTS. Recent 16.5-mm-period NbTi SCUs (K ≈ 1.63) incorporate design changes to improve coil-to-ground insulation and enhanced quench protection, enabling training up to 500 A with fewer than fifteen quenches in 1.5-m magnets, ensuring reliable operation at...
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Ting-Yi Chung (National Synchrotron Radiation Research Center)19/05/2026, 16:00MC7.T15: Technology: Undulators and WigglersPoster Presentation
Abstract
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The pulsed-wire method (PWM) is employed for magnetic-field characterization of accelerator insertion devices. However, reflected transverse waves in PWM systems can introduce significant errors in the reconstructed magnetic-field distribution. These reflections arise because the conductor must be fixed at both ends, causing any traveling wave reaching a fixed boundary to generate... -
David Squires (Karlsruhe Institute of Technology)19/05/2026, 16:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationPoster Presentation
Laser-plasma accelerators (LPAs) generate ultrashort high intensity electron bunches from a compact source size. At the Karlsruhe Institute of Technology (KIT), we will use an LPA as one of the injectors for the compact, high-momentum acceptance, non-equilibrium storage ring cSTART.
The LPA injector with a length of only a few millimeters will be optimized to match the cSTART operation...
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Namseok Go (Pohang Accelerator Laboratory)19/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
The Korea-4GSR (4th Generation Storage Ring) requires a highly stable and precisely synchronized laser pulse train to drive its photocathode RF gun in multi-bunch mode. To meet this requirement, we developed a laser system capable of generating nanosecond-interval pulse trains with femtosecond-level timing control. The pulse train is formed using a beam-split/delay-and-combine method,...
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Mr Haowei Hu (Tsinghua University)19/05/2026, 16:001MC2.T26: Photon sources: Photon Beam Lines and ComponentsPoster Presentation
Accurate simulation of partially coherent beam transport and coherence evolution is critical for next-generation accelerator-based light sources. In this work, we develop a dedicated numerical approach for partially coherent EUV beamline propagation to support the optical design and optimization of Steady-State Microbunching (SSMB) beamlines under development at Tsinghua University.* A...
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Juwan Kim (Institute for Basic Science)19/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
A fixed-volume comparison of three-dimensional hard-wall quantum confinement is extended to a volume-dependent frequency model for superconducting quantum systems. The equivalent quantum frequency is obtained from the lowest Dirichlet eigenvalue and compared with radio-frequency (RF) scales used in supercon-ducting radio-frequency (SRF) cavities. The calculation separates the Schrödinger...
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Ibon Bustinduy (ESS Bilbao)19/05/2026, 16:00MC3.T28: Advanced techniques/Novel sources: Neutron SourcesPoster Presentation
ESS-Bilbao, JCNS, and LLB joined forces to develop Europe’s first HICANS Platform (HiCANS stands for "High Current Accelerator-driven Neutron Source"). This project aims to integrate the high current proton accelerator system, currently under construction at ESS Bilbao, with the target-moderator-reflector unit that has been successfully built and operated at Forschungszentrum Jülich, and the...
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Xavier Davoine (CEA DAM Île-de-France, Laboratoire Matière en Condition Extrêmes)19/05/2026, 16:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationPoster Presentation
Sources of energetic electrons accelerated by ultra-intense lasers have diverse applications across various research fields. This presentation details recent numerical and experimental findings on electron acceleration using the ~0.7 kJ, ~0.7 ps LMJ-PETAL laser system. Due to the long pulse duration, the interaction of the PETAL beam with a gas jet (~cm in length) accelerates electrons in the...
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Evgenya Simakov (Los Alamos National Laboratory)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
This presentation will report on the status of fabrication, tuning, and high gradient testing of a two-cell accelerator cavity with distributed coupling and higher-order-mode (HOM) damping slots covered with nickel-chromium (NiCr) absorbing material. The cavity is designed with a specific purpose to demonstrate applicability of NiCr material for damping HOMs in a C-band distributed-coupling...
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John Lyles (Los Alamos National Laboratory)19/05/2026, 16:00MC7.T08: RF Power SourcesPoster Presentation
The Los Alamos Neutron Science Center uses a coupled-cavity linac to accelerate H- ions from 100 to 800 MeV. It is powered by forty-four 1.25 MW 805 MHz klystrons, each capable of 150 kW of average power. A prototype solid-state amplifier that meets these requirements is in development. Commercial silicon LDMOS transistors have reduced power above 600 MHz and are also limited by the maximum...
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Zexin Cao (University of Science and Technology of China)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
In order to realize a compact scheme and high accelerating efficiency for the linear injector of the proposed Jinhua light source (JHLS) project, a 1-meter constant gradient (CG) C-band traveling-wave (TW) accelerating structure has been developed and constructed to achieve a high acceleration gradient of > 50 MV/m. This C-band accelerating structure operates at 3π/4 mode and achieves an...
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Chikara Kondo (Japan Synchrotron Radiation Research Institute, RIKEN SPring-8 Center)19/05/2026, 16:001MC7.T11: Power SuppliesInvited poster
We have developed new magnet power supply (PS) system for the forthcoming green light source facility, SPring-8-II. Aiming at highly reliable and energy conscious accelerator operations, various PSs with a variety of output current and voltage settings are designed such that (i) each PS with an output current larger than 250 A includes Silicon Carbide switching devices, achieving a conversion...
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Yine Sun (Argonne National Laboratory)19/05/2026, 16:00MC2.A08: Photon sources: Linear AcceleratorsPoster Presentation
The recent installation of a new photocathode drive laser has significantly improved the reliability of photoinjector operations at the Advanced Photon Source (APS), Argonne National Laboratory. The photoinjector can operate in either high-charge or high-brightness mode. The high-charge mode is ultimately intended to support direct injection from the linac into the booster ring, eliminating...
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Dr Yoshihisa Iwashita (The University of Osaka)19/05/2026, 16:00MC7.T34: Permanent MagnetsPoster Presentation
Neutron guide tubes are used to transport neutrons efficiently. However, it requires very precise alignment, which is costly and vulnerable to shocks from earthquakes and other incident. It also is very sensitive to the surface condition such as cracks or dusts on the mirror. We are developing a new type of neutron mirror by utilizing the deflection of neutrons in a gradient magnetic field....
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Andres Leiva Genre (University of Pecs)19/05/2026, 16:00MC3.A15: Advanced techniques/Novel sources: New Acceleration Concepts and TechniquesPoster Presentation
The relatively new sub-field of dielectric terahertz-driven accelerators (DTAs), which combines terahertz (THz) technology with dielectric laser accelerators, has gained relevance in recent years. To achieve high acceleration gradients, high-intensity THz fields are required. Therefore, high-gradient DTAs encompass the design of compact, high-intensity THz pulse sources.
In this work, we...
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Maria Sanchez Barrueta (Los Alamos National Laboratory)19/05/2026, 16:00MC7.T08: RF Power SourcesPoster Presentation
As part of the LANSCE Accelerator Modernization Project (LAMP), critical portions of the proposed accelerator will be tested as proof of concept and aid in planning the installation of LAMP at Los Alamos Neutron Science Center. As part of this demonstration, the radio frequency quadrupole (RFQ) and the first drift-tube linac (DTL) cavity will be tested with beam. For this purpose, high-power...
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Zexin Cao (University of Science and Technology of China)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
In order to enhance the accelerating gradient of the 1-meter C-band Traveling-wave accelerating structure prototype, as well as meet the physics requirements on the linear injector of the proposed Jinhua light source (JHLS) project, a compact C-band spherical pulse compressor was developed to boost the output power from klystron. This pulse compressor excites TE114 modes inside the spherical...
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Joel Valerian (The University of Melbourne), Matteo Volpi (The University of Melbourne)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
Mel-BOX, the reinstallation of half of CERN’s XBOX3 test stand, has been operating at the University of Melbourne’s X-LAB for over few years. The facility provides 12 GHz high-power pulsed RF for testing high-gradient travelling-wave accelerating structures and associated X-band components relevant to the CLIC baseline.
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Two TD24 structures, previously conditioned at CERN and stored for five... -
Dr Sheying LI (Shanghai Advanced Research Institute, Chinese Academy of Sciences)19/05/2026, 16:00MC7.T16: Pulsed Technology (magnet and power supplies)Poster Presentation
A kicker magnet system is under development for the Shanghai High repetition rate X-ray Free Electron Laser and Extreme Light Facility (SHINE) at the Shanghai Advanced Research Institute, Chinese Academy of Sciences (SARI, CAS). Mitigating thermal drift during extended operation is essential to maintain the beam distribution stability. A high-precision current feedback control system has been...
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Dr Yoon Geol Choi (Pohang University of Science and Technology)19/05/2026, 16:00MC7.T31: Subsystems, Technology and ComponentsPoster Presentation
For the reduction of beam emittance in a Korea-4GSR project, the storage ring will be equipped with 344 quadrupole, 168 sextupole, and 56 octupole magnets. These multipole magnets require precise magnetic measurements to verify not only the field strength but also harmonic components within the specified tolerances over a good field region with a diameter of 30 mm. To meet this requirement, a...
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Neil Stilin (Thomas Jefferson National Accelerator Facility)19/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
The Higher Order Modes (HOMs) on each of 8 Superconducting Radio Frequency (SRF) cavities have been measured as the result of surveys on newly installed C100 and C75 cryomodules at the CMTF cave and the CEBAF tunnel during their commissioning. We are going to report the measurement, data analysis techniques and the result against its HOM damping specification for the multi-turn dipole Beam...
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Gabriel Ascenção (Brazilian Synchrotron Light Laboratory)19/05/2026, 16:00MC2.T15: Photon sources: Undulators and WigglersPoster Presentation
This work evaluates the effects of the first vertical polarization undulators (VPUs) installed in the SIRIUS storage ring on electron-beam dynamics. These insertion devices (IDs) are light sources for the CARNAÚBA and CATERETÊ beamlines at the Brazilian Synchrotron Light Laboratory (LNLS). The analysis combines numerical simulations and beam-based measurements to quantify static and dynamic...
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Seong-Hoon Kwon (Pohang Accelerator Laboratory)19/05/2026, 16:00MC7.T25: Technology: LasersPoster Presentation
PAL-XFEL is preparing for a two-bunch operation, in which two electron bunches separated by 25 ns are accelerated within a single RF field. This mode enables simultaneous 60 Hz operation for two beamlines without the need for additional accelerating structures. To support this operation, a UV laser system capable of generating two temporally separated pulses was developed. The...
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Chin-Kang Yang (National Synchrotron Radiation Research Center)19/05/2026, 16:001MC7.T15: Technology: Undulators and WigglersPoster Presentation
A permanent-magnet (PM) phase shifter for phase matching between tandem elliptically polarizing undulators (EPUs) at the Taiwan Photon Source (TPS) has been developed, and its initial version has already been installed in the storage ring. Current efforts focus on improving the device by enhancing the mechanical precision of the gap-adjustment system, maintaining magnetic-field quality, and...
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Jincheng Xia (University of Science and Technology of China)19/05/2026, 16:00MC7.T10: Superconducting MagnetsPoster Presentation
ReBCO coated conductors are promising for compact high-field bending magnets and are being considered for use in the Hefei Advanced Light Facility (HALF) to enhance the photon energy from bending-magnet radiation. However, screening-current effects induced during excitation remain an important issue for such magnets. In this work, these effects are investigated in the proposed bending magnet...
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Dr Pascal Jardin (Grand Accélérateur National d'Ions Lourds), Dr Pierre Chauveau (Grand Accélérateur National d'Ions Lourds), Pierre Delahaye (Grand Accélérateur National d'Ions Lourds)19/05/2026, 16:00MC3.A20: Advanced techniques/Novel sources: Radioactive IonsPoster Presentation
The MORA experiment is looking for a possible signature for CP violation in the decay of radioactive trapped and polarised ions [1]. The two main candidates for measurements at MORA are 23Mg+ and 39Ca+, that will be delivered by the SPIRAL 1 facility in GANIL as of 2029.
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The 39Ca+ beam requires a challenging development. To achieve a sufficient beam intensity - more that 1E7 pps - the... -
Yuichiro Kida (Japan Synchrotron Radiation Research Institute)19/05/2026, 16:001MC7.T15: Technology: Undulators and WigglersPoster Presentation
In the SPring-8-II project, a major upgrade of the synchrotron radiation facility SPring-8, numerous insertion devices (IDs) will be replaced by new ones such as the standard/tapered in-vacuum undulators for SPring-8-II (IVU-II) for hard x-rays, the helical 8 undulators for soft x-rays with variable polarizations, and damping wigglers for emittance control. Among these, the standard IVU-II...
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Ambra Morana (Pantechnik)19/05/2026, 16:00MC3.T01: Advanced techniques/Novel sources: Proton and Ion SourcesPoster Presentation
This paper presents the technical improvements and experimental
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characterisation of a hybrid superconducting 18\,GHz Electron Cyclotron Resonance Ion Source
(ECRIS) manufactured by Pantechnik. Since the last one manufactured in 2011, the source has undergone significant upgrades to enhance its performance and reliability for heavy ion beam production. Key improvements include optimisation of... -
Mohamed Hedi TRABELSI (CNSTN)19/05/2026, 16:00MC8.A28: Applications: Industrial AcceleratorsPoster Presentation
This work details the qualification of a semi-industrial 10 MeV, 5 kW pulsed electron Linear Accelerator (Linac) facility, following critical maintenance on the modulator. The accelerator operates using a thermoionic emission source and a traveling-wave accelerating structure. The maintenance involved replacing a damaged Pulse Forming Network (PFN) component.
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The objective of this... -
Martin Pieck (Los Alamos National Laboratory)19/05/2026, 16:001MC8.U07: SustainabilityPoster Presentation
The sustained reliability and availability of the LANSCE accelerator depend on a clearly defined and integrated “systems” framework. This foundation links five core sustainment strategies: Asset Management, Risk Management, Conduct of Engineering, Training & Qualification, and Data Collection & Analysis. Unifying these under a common structure enables consistent decision-making, coordinated...
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Yin Kang (Shanghai Advanced Research Institute, Chinese Academy of Sciences)19/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
High-power multi-color terahertz (THz) radiation exhibits extraordinary scientific application prospects at various scientific frontiers, for its capacity to deliver THz excitation at multiple frequencies simultaneously. However, the generation of high-power multi-color THz radiation with tunable frequencies remains a challenge for existing techniques. Here, a technique by combining the...
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Prof. Carsten Welsch (University of Liverpool, Cockcroft Institute)19/05/2026, 16:00MC3.A15: Advanced techniques/Novel sources: New Acceleration Concepts and TechniquesPoster Presentation
Recent research into the interaction between high-intensity beams and surface plasmas has revealed the significant potential of generating extremely strong (~TV/m) fields for particle acceleration and radiation production. This new approach has emerged by overcoming several challenges in beam-solid interactions. It therefore holds great promise for reshaping the research direction of...
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Tong Li (Tsinghua University)19/05/2026, 16:00MC2.A25: THz sourcesPoster Presentation
We study undulator radiation observed away from the beam axis for terahertz (THz) free-electron laser (FEL) beams. Earlier work on a single short bunch relates the continuous off-axis spectrum to the longitudinal bunch profile , without a discrete angular ‘resonance’ tied to micro-bunch harmonics. For a pre-bunched pulse-train beam, the bunching factor develops narrow spectral lines at the...
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Tianlong He (University of Science and Technology of China)19/05/2026, 16:00MC7.T14: Vacuum TechnologyPoster Presentation
The Hefei Advanced Light Facility (HALF) is the fourth-generation synchrotron radiation light source based on Diffraction-limited Storage Ring (DLSR) with low beam emittance, high brightness and coherent photon flux. According to the physical design re-quirements of the HALF, the vacuum chamber struc-tural materials should have low outgassing rate, good electrical and thermal conductivity,...
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Sean Moskaitis (Facility for Rare Isotope Beams)19/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
Superconducting radio-frequency (SRF) cavity surface treatment with nitrogen-doping (N-doping) was a breakthrough in cavity processing which was found capable of increasing the cavity quality factor (Q0) by more than a factor of 2 compared to standard electropolish (EP) surface treatments, as well as achieving a highly desirable anti-Q slope behavior, an increase of Q0 with increasing...
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Xinyu Jin (University of Science and Technology of China)19/05/2026, 16:00MC7.T14: Vacuum TechnologyPoster Presentation
Maintaining an ultra-high vacuum (UHV) environment is essential for the Hefei Advanced Light Facility (HALF) to achieve its design performance. Owing to the dimensional limitations imposed by small-aperture vacuum chambers, non-evaporable getter (NEG) films are commonly applied to the inner walls to enhance vacuum performance. However, conventional NEG films increase the resistive-wall...
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Naoto Yamamoto (High Energy Accelerator Research Organization)19/05/2026, 16:00MC2.A24: Photon sources: Accelerators and Storage Rings, OtherPoster Presentation
Bunch lengthening technique is most reliable method to mitigate the intrabeam scattering in synchrotron light sources. The performance of the bunch lengthening can be degraded by a transient beam-loading (TBL) effect, which becomes large when long gaps are introduced in the bunch filling pattern. To mitigate the TBL effect, we have proposed a compensation method using a broadband cavity [1]. We...
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Giovanna Vandoni (European Organization for Nuclear Research)19/05/2026, 16:00MC8.U10: Technology Transfer and Lab IndustryPoster Presentation
The HL-LHC project is a major upgrade of CERN’s LHC, aiming to enhance the collider’s integrated luminosity by a factor ten within ten operational years. Endorsed as top priority for the European Strategy for Particle Physics in 2013, the project was formally approved by CERN’s Council in 2015.
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To achieve its performance goal, HL-LHC relies on several technology drivers. Among the new... -
wenjun Xie (Institute of Modern Physics, Chinese Academy of Sciences)19/05/2026, 16:00MC7.T14: Vacuum TechnologyPoster Presentation
The vacuum system of the High Intensity heavy ion Accelerator Facility (HIAF) is critical for stable high-intensity beam transport and long-term reliable operation. This system, which spans 2 kilometers, faces numerous technical challenges. To reduce eddy current effects caused by rapidly changing magnetic fields, the Booster Ring (BRing) adopts an innovative titanium alloy-lined...
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Zhou Yang (Tsinghua University)19/05/2026, 16:00MC7.T25: Technology: LasersPoster Presentation
Optical resonators serve as excellent spatiotemporal filters and are widely used for suppressing laser phase noise and stabilizing laser frequency. They can also function as passive optical enhancement cavities, providing power gains of thousands to tens of thousands. High-power optical enhancement cavities hold promise for applications such as steady-state microbunching (SSMB) advanced light...
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Jiaqi Zhang (University of Manchester)19/05/2026, 16:00MC3.T25: Advanced techniques/Novel sources: LasersPoster Presentation
Laser wakefield acceleration (LWFA) can produce accelerating fields of several hundred GV/m, greatly reducing accelerator size and cost. Carbon nanotube (CNT) bundles, featuring high plasma density (>10$^{19}$ cm$^{-3}$), tunable effective density, excellent thermal properties, and empty channels that enable laser propagation, have attracted interest as solid-state plasma sources. Previous...
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Alex Whitehead (Extreme Light Infrastructure Beamlines, Czech Technical University in Prague)19/05/2026, 16:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationPoster Presentation
Laser-plasma accelerators (LPAs) can generate high-energy, high-quality electron beams, paving the way for a new generation of compact free-electron lasers (FELs).
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To achieve this, beam stability and repeatability must improve, relying on advances in high-power lasers and plasma-source development. These are key technologies for the 100 Hz LPA-based FEL, under development at ELI ERIC for... -
Alexander Saw (Karlsruhe Institute of Technology)19/05/2026, 16:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationPoster Presentation
Laser-plasma accelerators (LPAs) generate ultrashort, high-intensity electron bunches in a compact form factor. At Karlsruhe Institute of Technology (KIT), we are developing an LPA for direct injection into a specifically built storage ring with high momentum acceptance. The cSTART storage ring (compact storage ring for accelerator research and technology) can be tuned to energies between 50 –...
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Feng Zhou (SLAC National Accelerator Laboratory)19/05/2026, 16:00MC2.T02: Photon sources: Electron SourcesPoster Presentation
The Linac Coherent Light Source II (LCLS-II) has been in user operations since 2023 and has successfully ramped up the beam repetition rate to 93 kHz. The LCLS-II photoinjector has demonstrated the ability to deliver a high-brightness, low-emittance electron beam at high repetition rates, meeting key performance targets. However, several operational challenges have emerged during commissioning...
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Tao He (University of Science and Technology of China)19/05/2026, 16:00MC2.A24: Photon sources: Accelerators and Storage Rings, OtherPoster Presentation
The beam lifetime is critical for the synchrotron radiation light source storage rings. By increasing the coupling of the storage ring, the beam lifetime can be improved. However, due to the increased coupling, the beam size around the entire ring also increases. A larger beam size degrades the performance of synchrotron radiation from insertion devices in the straight sections. By using skew...
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Victor Smaluk (National Synchrotron Light Source II)19/05/2026, 16:00MC2.A24: Photon sources: Accelerators and Storage Rings, OtherPoster Presentation
We revisit the applicability of standard intrabeam scattering (IBS) theories to modern high-density, ultra-low-emittance beams in diffraction-limited storage rings. Classical IBS formalisms by Piwinski, Martini and Bjorken–Mtingwa are derived under assumptions of Gaussian phase-space distributions, small-angle diffusion and weak perturbations. For the parameter range of interest these premises...
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Nicole Verboncoeur (Cornell University (CLASSE))19/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
Exploration of new recipes and novel materials for superconducting RF cavities is necessary to push to higher quality factors and accelerating gradients. The superheating field is the material property that sets the limit on the maximum accelerating gradient achievable for a superconducting cavity of a given geometry. The Cornell SuperHeating Radiofrequency Pulsed Power Probe (C-SHRP^3) is a...
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Hongtao Hou (Shanghai Advanced Research Institute)19/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
Aiming to increase the beam lifetime and to enhance single bunch beam current threshold required by fast X-ray imaging beam line in SSRF beamline phase-II project, a passive superconducting third harmonic cryomodule has been developed. It has been put into Operation since 2021. The development history and long time operation performance will be reported in this paper.
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Mr Ashish Sharma (Indian Institute of Technology Delhi)19/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
This project develops a machine learning–based system to prevent RF cavity trips in the free-electron laser by autonomously controlling the applied RF power. Sudden vacuum and current fluctuations within the cavities can cause reflections that trip the machine, and continuous manual monitoring throughout the conditioning process isn't feasible. To address this and potentially improve the...
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BaoHou Liu (University of Science and Technology of China)19/05/2026, 16:001MC7.T09: Normal Conducting MagnetsPoster Presentation
The Hefei Advanced Light Facility (HALF), a fourth-generation light source based on a multi-bend achromat (MBA) lattice, is currently under construction. The storage ring consists of 20 cells and requires over 800 magnets. To assess the magnetic field quality and perform magnet fiducialization, several dedicated measurement systems have been developed. These include rotating-coil,...
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BaoHou Liu (University of Science and Technology of China)19/05/2026, 16:00MC7.T17: Technology: Alignment and SurveyPoster Presentation
To meet the stringent alignment requirements for accelerator magnets in the Hefei Advanced Light Facility (HALF),
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accurate fiducialization of the magnetic center is essential.
This paper presents a high-precision and efficient fiducialization method developed for HALF, based on a single stretched
wire bench integrated with a precision surface plate. The
system enables precise... -
Nonthaphat Sutthimon (Synchrotron Light Research Institute)19/05/2026, 16:00MC7.T15: Technology: Undulators and WigglersPoster Presentation
This paper presents the comprehensive magnetic design and simulation-based optimization of a prototype hybrid in-vacuum undulator (IVU), developed as a proof-of-concept for the 4th generation synchrotron light source (SPS-II) at the Synchrotron Light Research Institute (SLRI). Synchrotron radiation spectra simulations were performed using SPECTRA to calculate the expected photon flux for a...
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Jun Wang (Shanghai Advanced Research Institute), jinya chen (Shanghai Advanced Research Institute, Chinese Academy of Sciences)19/05/2026, 16:00MC7.T15: Technology: Undulators and WigglersPoster Presentation
The Shanghai High-Repetition-Rate XFEL Facility (SHINE), a hard X-ray free-electron laser currently under construction in Zhangjiang, Shanghai, will start with three undulator lines, FEL-I, FEL-II and FEL-III, covering a photon-energy range from 0.4 to 25 keV. In the initial construction phase, nearly 100 undulators are required, mainly including 42 U26 undulators for FEL-I and 18 U55 plus 14...
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Hongtao Hou (Shanghai Advanced Research Institute)19/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
Mass production of 1.3 GHz high-Q superconducting cavities for the Shanghai High repetition rate XFEL and extreme light facility (SHINE) has now been successfully carried out. Both high temperature nitrogen doping (N-doping) recipe and mild temperature (Mid-T) baking recipe have been adopted to achieve high-Q performance. The production are shared by five companies to provide cavities at...
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Mr Matthias Kausel (MedAustron)19/05/2026, 16:00MC8.U01: Health & BiologyPoster Presentation
The implementation of a sequential injection scheme for mixing helium and carbon ions from different ion sources at the MedAustron accelerator facility enabled the first successful delivery of a mixed helium and carbon ion beam in a synchrotron therapy facility. Precise knowledge of both the helium and the carbon properties is an essential input for designing treatment monitoring experiments,...
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Thongchai Leetha (Synchrotron Light Research Institute)19/05/2026, 16:00MC7.T09: Normal Conducting MagnetsPoster Presentation
A series of magnet prototypes have been developed for the storage ring of Siam Photon Source II, the second synchrotron light source in Thailand. The prototypes include dipole, combined dipole, quadrupole, sextupole and octupole magnets for half of the Double Triple Bend Achromat (DTBA) lattice. To validate prototype performance, magnetic field characterization was carried out using stretched...
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Veronica Guo (Stanford University)19/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Invited poster
Electron dynamics in molecules occur on sub-femtosecond timescales and drive fundamental processes such as photosynthesis, catalysis, and chemical bond transformations. Attosecond XFELs provide the temporal resolution and pulse power necessary to probe these phenomena. Emerging superconducting accelerator technology further enables high-repetition-rate operation, enhancing statistical...
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Kantanat Phochanasombut (Chulalongkorn University)19/05/2026, 16:00MC7.T16: Pulsed Technology (magnet and power supplies)Poster Presentation
The Synchrotron Light Research Institute of Thailand is developing a new eddy-current septum magnet as part of the pulsed magnet systems for its next-generation synchrotron light source, the Siam Photon Source II (SPS-II). This work focuses on mechanical design and structural analysis of the septum magnet to improve the prediction of anomalies and potential failures over the machine's...
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Ms Fengyi Zhang (University of Science and Technology of China)19/05/2026, 16:00MC2.T02: Photon sources: Electron SourcesPoster Presentation
Slice energy spread is a key beam-quality parameter that limits the compression of ultrashort electron bunches. To suppress the RF-dominated slice-energy-spread growth in a photocathode RF gun, a 2.3--2.3 cell configuration with a cascaded cavity with a decelerating field is proposed on the basis of the quasi-DC 2.3-cell X-band gun. Simulations show that, without space-charge effects, the...
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Fancong Zeng (Chinese Academy of Sciences)19/05/2026, 16:001MC2.A06: Free Electron Lasers (FELs)Poster Presentation
In advanced accelerator-based light sources and colliders, bunch compressors like arc-type (DBA) and linear-type (chicane) are widely used to generate high-quality electron beams with kiloampere (kA)-level peak currents. However, a serious problem in increasing the peak current even higher is the significant degradation of beam quality caused by the Coherent Synchrotron Radiation (CSR) effect....
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Dr Bennet Krasch (Karlsruhe Institute of Technology)19/05/2026, 16:00MC8.U08: Radiation EffectsPoster Presentation
The understanding of the interaction of high-intensity particle beams with matter is an important aspect for the development of novel accelerator instrumentation. Recently, methods for delivery of ultra-high dose rate radiation have become an increasingly important area of accelerator technology; for example, in the context of FLASH radiotherapy, dosimetry, and particle detector development....
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Cecilia Abbamonte (Cornell University (CLASSE))19/05/2026, 16:00MC2.A29: Ultrafast electron diffraction and ultrafast electron microscopyPoster Presentation
Controlling the energy profile of an electron beam is important for continuous and time resolved spectroscopic and imaging applications that require narrow energy spreads. The energy spread of an electron beam is fundamentally limited by the source, but energy spread that is correlated in time or space can be corrected using an appropriate time- and space-varying force. We present a method of...
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Zhouyu Zhao (University of Science and Technology of China)19/05/2026, 16:00MC7.T11: Power SuppliesPoster Presentation
A control scheme for a high-density multi-channel regulated current power supply based on a compact high-speed PLC is proposed. This scheme adopts a hybrid analog-digital dual-loop control method. The power modules utilize mature commercial modules with built-in analog voltage control loops, while a single PLC constructs the current feedback loops for multiple power modules.
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The scheme has... -
Emily Jayne Brookes (Helmholtz-Zentrum Berlin für Materialien und Energie)19/05/2026, 16:00MC3.T02: Advanced techniques/Novel sources: Electron SourcesPoster Presentation
Optimising SRF photoinjectors is a challenging task due to the high-dimensional, nonlinearly coupled parameters and competing objectives such as transverse emittance and bunch length. Conventional methods such as manual tuning or MOGA require thousands of evaluations and are impractical for routine operation or computationally expensive simulations. This work presents a multi-objective...
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Xiaodan Liu (Hunan University)19/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
Femtosecond hard X-ray radiation beyond 12.4 keV enables unprecedented opportunities for probing matter at atomic scales, however, its generation remains challenging for self-amplified spontaneous emission (SASE)-based XFELs due to reduced FEL gain, leading to extended undulator requirements and limited radiation efficiency. To address this issue, we investigate a multi-stage optical-klystron...
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Frederic Chautard (Grand Accélérateur Nat. d'Ions Lourds)19/05/2026, 16:00MC3.A17: Advanced techniques/Novel sources: High Intensity AcceleratorsPoster Presentation
A new project, NEWGAIN (NEW GAnil Injector), is under construction at GANIL, and aims to build a second injector for heavier beams with A/q up to 7, as an extension of the SPIRAL2 accelerator. With this upgrade, SPIRAL2 will provide high intensity beams, from proton to uranium, thus increasing GANIL international competitiveness both in fundamental science and associated applications.
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The... -
Sami Tantawi (Arizona State University)19/05/2026, 16:00MC2.A26: Photon sources: Compton sourcesPoster Presentation
In recent years, there has been interest in developing compact x-ray light sources that are significantly smaller and cheaper to build than a conventional XFEL or synchrotron facility. As part of this effort, the compact x-ray light source (CXLS) at Arizona State University is an x-ray source based on Inverse Compton Scattering that produces a high-brightness, short pulse duration x-ray beam....
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Dr Shane Koscielniak (TRIUMF)19/05/2026, 16:001MC7.T06: Normal Conducting RFPoster Presentation
Ferrites may be used to shrink cavity resonator size. If a variable magnetic bias field is applied, the resonance frequency may be varied to follow proton/ion revolution frequency. The RF magnetic field can be applied either parallel or perpendicular to the bias. If the ferrite is near saturation, the incremental permeability is dominated by the electron spins - which are described by the...
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John Farmer (Max Planck Institute for Physics)19/05/2026, 16:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationPoster Presentation
The AWAKE experiment harnesses the 400 GeV proton beam from the CERN SPS to drive plasma wakefields, which in turn accelerate a witness bunch of electrons to high energy. Upgrades are currently being carried out to facilitate the experimental programme of Run 2c, which includes control of the witness bunch quality during acceleration. We here present the first full simulations of the...
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Guimei Wang (Brookhaven National Laboratory)19/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
NSLS-II, a 3 GeV third-generation synchrotron light source at Brookhaven National Laboratory, was commissioned in 2014 with the ultimate performance goal of achieving 500 mA beam current and a vertical emittance at the 8 pm diffraction limit. Since commissioning, the facility has made steady progress, reaching routine 500 mA operation in 2025. Along this path, several challenges were...
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Guimei Wang (Brookhaven National Laboratory)19/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
The NSLS-II Accelerator Division is actively pursuing R&D aimed at enhancing storage ring operational reliability, beam stability, high-current performance, and readiness for future upgrades. Recent achievements include reaching 500 mA operation, applying machine learning techniques for reliability improvement, and deploying a Unified Orbit Feedback (UOFB) system that delivers sub-micron beam...
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Mariia Seniak (Lviv University)19/05/2026, 16:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationPoster Presentation
Plasma-based accelerators can produce high-brightness, high-energy electron bunches and are considered a promising alternative to conventional accelerator technology and a potential upgrade path for existing large-scale facilities.
Collider concepts based on plasma wakefield acceleration have already been proposed, and plasma-based injectors for XFELs are under active development.
Both...
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Haiyang Li (Shanghai Institute of Applied Physics, Chinese Academy of Sciences)19/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
Plasma-wakefield-based acceleration offers a route to realize compact X-ray free-electron lasers, but its application is currently limited by beam quality. Two-color X-ray FEL pulses provide a powerful tool for probing ultrafast dynamics. Here we propose a scheme for generating such pulses by using an off-axis elliptical hollow-channel plasma to tailor the electron-beam phase space while...
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Anton Malygin (Karlsruhe Institute of Technology)19/05/2026, 16:00MC7.T11: Power SuppliesPoster Presentation
The Karlsruhe Research Accelerator (KARA) booster synchrotron, normally used to accelerate electrons from 53 MeV to 500 MeV for injection into the KARA storage ring, has recently been successfully operated in a stand-alone storage ring mode. This capability was enabled by the modernization of its magnet power supplies and their integration into an EPICS-based control system. Operating the...
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Simone Di Mitri (Elettra-Sincrotrone Trieste S.C.p.A., University of Trieste)19/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
We investigate the upgrade of the Elettra 2.0 diffraction-limited storage ring light source with radiofrequency transverse deflecting cavities generating picosecond-long X-ray pulses of moderate intensity and high repetition rate. Based on a preliminary RF design, operational aspects, challenges and solutions to make the crab cavity scheme simultaneous to the standard operation of the...
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Pengcheng Wang (University of Science and Technology of China, Institute of High Energy Physics, Chinese Academy of Sciences)19/05/2026, 16:00MC7.T14: Vacuum TechnologyPoster Presentation
Since the China Spallation Neutron Source (CSNS) was officially commissioned in 2018, its operational performance has been continuously improved. To date, the beam power has reached 185 kW, which is 85% higher than the design value, with a stable annual beam delivery time of more than 5000 hours and good overall operational reliability. The vacuum system serves as the core support for stable...
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Mauro Pivi (EBG MedAustron GmbH)19/05/2026, 16:00MC8.A28: Applications: Industrial AcceleratorsPoster Presentation
At MedAustron, a synchrotron-based cancer therapy center located in Austria, Optical Emission Spectroscopy (OES) has proven to be an effective technique for monitoring ion source stability, offering a non-invasive alternative to traditional beam diagnostic devices such as Faraday Cups (FCs). Measurements were performed at the MedAustron injector on one of the three identical Electron Cyclotron...
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Tianlong He (University of Science and Technology of China)19/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
The Hefei Advanced Light Facility (HALF), a soft X-ray diffraction-limited storage ring light source at NSRL, began construction in 2023. This paper presents the optimization and update of the physics design for the HALF storage ring in the past two years.
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Ms Fengyi Zhang (University of Science and Technology of China)19/05/2026, 16:00MC2.A08: Photon sources: Linear AcceleratorsPoster Presentation
In this paper, the Non-dominated Sorting Genetic Algorithm II (NSGA-II), combined with the beam dynamics code ASTRA, was employed for the multi-objective optimization of the output performance of an electron linear accelerator (linac). Taking the pre-injector of a storage ring light source as an example, the electron linac consists of a thermionic cathode high-voltage electron gun, a...
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Haisheng Xu (Institute of High Energy Physics)19/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
Measurement of the response matrix serves as the foundation for orbit correction and OPICTS correction. To obtain more accurate response matrix data while minimizing the measurement time, we have meticulously optimized parameters such as the number of data points collected by Beam Position Monitors (BPMs) and the waiting time. Additionally, due to the long overall measurement duration for the...
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Stefano Farina (Sapienza University of Rome)19/05/2026, 16:00MC3.T02: Advanced techniques/Novel sources: Electron SourcesPoster Presentation
Electron LINACs are key tools for radiotherapy. Conventional low-energy ones can treat only superficial tumors. Achieving Very High Energy Electrons (VHEE, >100 MeV) enables treatment of deep-seated tumors. Furthermore, electrons are well-suited for delivering Ultra-High Dose Rates (UHDR) required for FLASH therapy, which improves healthy-tissue sparing. Combining VHEE and FLASH in a hospital...
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Fancong Zeng (Institute of High Energy Physics, Chinese Academy of Sciences, University of Chinese Academy of Sciences)19/05/2026, 16:001MC2.A24: Photon sources: Accelerators and Storage Rings, OtherPoster Presentation
Achieving higher spectral brightness in fourth-generation light sources like the Southern Advanced Photon Source (SAPS) through integrated free-electron laser (FEL) oscillators presents significant challenges. In response, we present a systematic optimization of the parameters for a low-gain FEL oscillator on the SAPS storage ring. Our work quantitatively evaluates how a transverse gradient...
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Enchen Wu (University of Science and Technology of China)19/05/2026, 16:00MC7.T17: Technology: Alignment and SurveyPoster Presentation
With the advancement of large-scale scientific projects, engineering control networks face higher demands. This study focuses on particle accelerator tunnel control networks, addressing key challenges in automated design, data fusion, and deformation prediction. Three main contributions are presented:(1) Automated simulation of laser tracker networks using Spatial Analyzer's Measurement Plans,...
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Victor Smaluk (Brookhaven National Laboratory)19/05/2026, 16:00MC2.A04: Photon sources: Circular AcceleratorsPoster Presentation
The most updated complex bend achromat lattice for the high-brightness upgrade of NSLSII provides a record-low electron beam emittance of 23 pm at 3 GeV. However, collective effects of beam dynamics, especially intra-beam scattering, are the main limiting factors of emittance and brightness at operational beam Intensity. Since the emittance and collective effects are strongly dependent on the...
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Ivan Podadera (Consorcio IFMIF-DONES España)19/05/2026, 16:00MC3.A17: Advanced techniques/Novel sources: High Intensity AcceleratorsInvited poster
IFMIF-DONES (International Fusion Materials Irradiation Facility, DEMO-Oriented Neutron Early Source) is a cutting-edge neutron irradiation facility designed for the study and qualification of materials intended for use in fusion reactors. It also contributes to the development of tritium and breeding blanket technologies. As part of the European roadmap to fusion electricity, its primary...
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1247. Performance analysis of a Mach-Zehnder interferometer using synthetic interferograms (TUP3063)Fatimah Alharthi (University of Manchester, Cockcroft Institute, University of Bisha)19/05/2026, 16:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationPoster Presentation
In this work, we assess the performance and limitations of Mach-Zehnder interferometry for plasma diagnostics using a fully synthetic, numerically generated dataset. We explore regions of parameter space that are difficult to access experimentally, including fringe behaviour under different plasma density profiles, the dynamic range of measurable phase shifts, and the resolution limits for...
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Hongtao Hou (Shanghai Advanced Research Institute, Chinese Academy of Sciences)19/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
The SHINE Linac was optimized to accelerate the beam to 8 GeV with 54 high-Q cryomodules (CMs), benefiting from the higher performance of the cavities and CMs. Currently, the mass production of SHINE cavities and CMs is ongoing. Up to now, around 350 high-Q cavities with mid-T baking or N-doping recipes have been fabricated and tested. Most of them have been assembled in CMs. More than 30 CMs...
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Jianliang Chen (Chinese Academy of Sciences)19/05/2026, 16:001MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
The Southern Advanced Photon Source (SAPS) is a planned 3.5 GeV ultra-low emittance storage ring based on a modified hybrid 7-bend achromat (H-7BA) lattice, located in Dongguan, China. To achieve an extremely low natural emittance, the lattice incorporates a novel unit cell consisting of a 'Sandwich' bending magnet combined with reverse bends. This design has resulted in a remarkable natural...
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Randy Ollier (Laboratoire de Physique des 2 Infinis Irène Joliot-Curie)19/05/2026, 16:00MC3.A15: Advanced techniques/Novel sources: New Acceleration Concepts and TechniquesPoster Presentation
The development of a compact electron accelerator is presented as part of the TWAC (Terahertz Wave Accelerating Cavity) EIC pathfinder project. To reduce the footprint, the project proposes to accelerate the electrons with a 100 MV/m THz travelling wave propagating inside a hollow cylindrical dielectric waveguide. In such a case, particle acceleration depends heavily on the dispersion...
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2253. Physics Design of a High-Performance Linac for Plasma Wakefield Acceleration at IHEP (TUP3028)Jingyi Li (Institute of High Energy Physics)19/05/2026, 16:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationPoster Presentation
Beam-driven plasma wakefield acceleration (PWFA) holds considerable promise for next-generation electron-positron colliders and high-energy free-electron lasers, owing to its ultrahigh accelerating gradients. In particular, sustained experimental breakthroughs worldwide indicate that the field is now entering a critical phase toward key advances. To address fundamental physics and technical...
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19/05/2026, 16:00MC3.T01: Advanced techniques/Novel sources: Proton and Ion SourcesPoster Presentation
We present here simulations of ALISES 3, a single-charged Electron Cyclotron Resonance (ECR) ion source developed at CEA, and comparisons with experiments. This source can produce high-intensity proton beams. Using commercial simulation tools, we simulate the key physical parameters such as the RF, magnetic, and electrostatic fields, as well as particle dynamics. These simulations describe...
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Zhen Wang (Shanghai Advanced Research Institute)19/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
Shanghai soft x-ray free electron laser (SXFEL) facility is China's first x-ray free electron laser facility, which opened to users in 2023. It consists of one 1.5GeV linac, two undulator lines, two beamlines and 6 end-stations. We built a plasma wakefield acceleration (PWFA) platform between the linac and the in-vacuum undulator line, including a 200TW laser system, a pair of IR grating for...
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Hiroyasu Ego (KEK Accelerator Laboratory)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
The KEK electron and positron injector linac uses pulse compressors that amplify the high-power RF waves generated from S-band 40 MW klystrons. It is necessary to precisely tune the compressors operating in high-power operation so that their VSWR is minimal and their output power is maximized. We have developed a real-time and labor-saving tuning system for the compressors. The system...
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Jincheng Xia (University of Science and Technology of China)19/05/2026, 16:00MC7.T13: CryogenicsPoster Presentation
This paper focuses on a preliminary design study of the cryostat for the insertion device magnet—specifically, a high-temperature superconducting bending magnet—in the HALF (Hefei Advanced Light Facility) national major science and technology infrastructure project. Based on three-dimensional modeling and finite element analysis, the structural and thermal performance of the cryostat was...
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Zhiyuan Zhang (Institute of Advanced Light Source Facilities, Shenzhen)19/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
This report presents the preliminary design of two motor drivers developed for the S3FEL project: one for cavity tuning and the other for coupler adjustment. Both drivers control stepper motors to regulate the resonant frequency and coupling degree of the 1.3 GHz superconducting cavity, respectively. Each driver comprises two functional modules: a motor driver board and a limit signal...
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Jianliang Chen (Chinese Academy of Sciences)19/05/2026, 16:001MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
The pursuit of diffraction-limited storage rings has driven emittance targets into the picometer regime. This paper presents a novel Single Hybrid Multi-Bend Achromat (SH-MBA) lattice design for the Southern Advanced Photon Source (SAPS), targeting an emittance at the 1 pm level. The compact SH‑16BA design, operating at 3.5 GeV with 36 periods and a 945 m circumference, employs high‑gradient...
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XiongHao Yuan (Shanghai Institute of Applied Physics, Chinese Academy of Sciences)19/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
Conventional electron guns face limitations in achieving the required accelerating gradients while maintaining satisfactory beam quality for our application. To overcome this challenge, we have developed a superconducting radiofrequency (SRF) electron gun. This gun is specifically designed and operated at a high cathode gradient of 30 MV/m. We present a comprehensive evaluation of its key...
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Xiaopeng Xu (University of Science and Technology of China)19/05/2026, 16:00MC7.T14: Vacuum TechnologyPoster Presentation
The Hefei Advanced Light Facility (HALF) is a fourth-generation synchrotron radiation light source based on diffraction-limited storage ring. NEG coated vacuum chambers provide an effective route for the acquisition of ultra-high vacuum in DLSRs. The vacuum performances of the NEG coated vacuum chamber greatly affect the long-term stability and reliability of vacuum systems. In this work,...
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YUXIN CHENG (Shanghai Institute of Applied Physics)19/05/2026, 16:00MC2.T02: Photon sources: Electron SourcesPoster Presentation
Abstract
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Cs$_3$Sb photocathodes are promising electron sources for accelerators because of their high quantum efficiency (QE) under visible light, but the low robustness under low vacuum limits practical operation. In this work, Cs$_3$Sb photocathodes coated with CsBr were prepared and characterized. The experimental results indicate that the coating improved the pressure adaptability of... -
Freddy Poirier (Cyclotron ARRONAX)19/05/2026, 16:00MC8.U04: Isotope ProductionPoster Presentation
The Arronax C70XP cyclotron is used to extract positive ions at fixed energy and protons from 35 to 70 MeV for irradiations. In order to support lower energy irradiations, an internal target system that can be positioned at various radius is being built. Several studies are being performed to investigate the beam behaviour. These studies include intensity profile of the beam as a function of...
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Javier Vega (Los Alamos National Laboratory)19/05/2026, 16:00MC7.T31: Subsystems, Technology and ComponentsPoster Presentation
The high-power radio frequency (HPRF) test facility that was developed at the Los Alamos Neutron Science Center (LANSCE) to evaluate components of a RF Solid-State Amplifier (SSA) system operating at 805 MHz has had significant results towards the targeted final output power of 1.25 MW. The system is powered by a 100 V DC supply and stabilized with a 0.1 F capacitor bank to support transient...
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Seohyeon An (Pohang Accelerator Laboratory), YoungGyu Jung (Pohang Accelerator Laboratory)19/05/2026, 16:00MC7.T09: Normal Conducting MagnetsPoster Presentation
A 4th generation storage ring based light source is being developed in Korea since 2021. It features <60 pm rad intrinsic beam emittance, about 800 m circumference, 4 GeV e-beam energy, full energy booster injection, and more than 40 beamlines which includes more than 24 insertion device (ID) beamlines. To optimize the beam emittances, longitudinal gradient bending magnet is applied in the...
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Yi Jiao (Chinese Academy of Sciences)19/05/2026, 16:00MC2.A04: Photon sources: Circular AcceleratorsPoster Presentation
The High Energy Photon Source (HEPS) is a 35-pm, 1360-m storage ring light source being built in the suburb of Beijing, China. The HEPS construction started in 2019, with the main civil construction finished at the end of 2021. In the past two years, the beam commissioning of the HEPS storage ring had been started and bascially finished. In this paper, we will briefly introduce commissioning...
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Oscar Blanco-García (ALBA Synchrotron (Spain))19/05/2026, 16:00MC7.T16: Pulsed Technology (magnet and power supplies)Poster Presentation
A measurement bench, dedicated to the characterization of pulsed magnets such as injection kickers, is under development at ALBA.
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The bench employs a modified vibrating wire technique allowing to measure high frequency magnetic fields in the range of hundreds of kHz.
In the traditional vibrating wire technique an AC current carrying wire is stretched through the bore of the magnet and the... -
Silvia Verdu-Andres (Brookhaven National Laboratory)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
The Normal-Conducting Radiofrequency (NCRF) systems for the Electron-Ion Collider Hadron Storage Ring (EIC HSR) comprise four unique cavity systems. These systems include a 24.6 MHz capture and acceleration system, a combined 49.2 MHz and 98.4 MHz bunch splitting system, and a 197 MHz storage system for collider operations. All systems have successfully passed their final design reviews, and...
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Wesley Hall (Los Alamos National Laboratory)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
The resonance control system for the cavity-coupled linear accelerator (CCL) portion of the Los Alamos Neutron Science Center (LANSCE) has been a consistent source of operational downtime. The present system has been used since installation with only minor upgrades, so a system is being developed to replace it with modern components to reduce maintenance and downtime. The present control...
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Neil Stilin (Thomas Jefferson National Accelerator Facility)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
This work presents current progress on the conditioning of two new 25 kW couplers optimized for use in a compact, conduction-cooled SRF cryomodule. A connecting waveguide, previously used for conditioning the 805 MHz SNS couplers, was altered for use at 915 MHz. The necessary modifications were determined via RF modeling, while thermal analysis results identified additional cooling...
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John Farmer (Max Planck Institute for Physics)19/05/2026, 16:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationPoster Presentation
Plasma wakefield acceleration offers high field gradients, typically on the order of 10 to 100x larger than conventional RF cavities. Currently available proton beams have sufficient energy to maintain these wakefields over significant distances, allowing a witness bunch of leptons to be accelerated to the energy frontier, with the plasma acting to mediate energy transfer from the proton...
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Taylor Yan (Synchrotron Light Research Institute)19/05/2026, 16:00MC7.T16: Pulsed Technology (magnet and power supplies)Poster Presentation
Thailand’s upcoming 3 GeV light source (SPS-II), based on compact fourth-generation storage ring design, requires precise and reliable operation of pulsed magnet systems for successful beam injection and extraction. The requirements exceed our experience from operations of Thailand’s current synchrotron, and also poses significant technical challenge beyond the currently demonstrated...
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Weibo Hu (University of Science and Technology of China)19/05/2026, 16:00MC2.T12: Photon sources: Beam Injection/Extraction and TransportPoster Presentation
A pulsed power supply based on a high-voltage op-tically triggered thyristor has been developed for the nonlinear kicker (NLK) magnet of the off-axis injec-tion system at the Hefei Advanced Light Facility (HALF). The NLK requires a short high-current pulse with a waveform close to a half-sinusoidal waveform, fast current rise, and low distortion. An LC resonant topology was adopted and an...
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Chuan Zhang (GSI Helmholtz Centre for Heavy Ion Research)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
RFQ (Radio frequency quadrupole) accelerating structures for RF frequencies lower than 400 MHz have been intensively investigated for decades. To realize modern medical accelerators with more compact layouts, there is an increasing interest to use ultra-high frequencies (UHF: 0.3 - 3 GHz). This study performs R&D towards efficient UHF RFQ structures. The design and simulation results will be presented.
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Kai ZHANG (Zhangjiang Laboratory)19/05/2026, 16:00MC7.T15: Technology: Undulators and WigglersPoster Presentation
A 50-period, helium-free high-temperature superconducting undulator (HTSU12) has been under development at Zhangjiang Laboratory (ZJLAB) since 2023 for potential deployment at the Shanghai Soft X-ray Free-Electron Laser facility. This prototype device is conduction-cooled using GM cryocoolers and has recently demonstrated an on-axis peak field of ~1.8 T at a period length of 12 mm and a...
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Dr Armen Grigoryan (Center for the Advancement of Natural Discoveries using Light Emission, Yerevan State University)19/05/2026, 16:00MC3.A15: Advanced techniques/Novel sources: New Acceleration Concepts and TechniquesPoster Presentation
The problem of determining the radiation field of a point charged particle in a cylindrical resonator with a multilayer wall is considered. An idealized case is considered: the resonator consists of a segment of a multilayer cylindrical waveguide of finite length, closed on both sides by infinitely thin ideally conducting surfaces. In this case, the radiation field of the particle can be...
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Dr Armen Grigoryan (Center for the Advancement of Natural Discoveries using Light Emission)19/05/2026, 16:00MC3.A16: Advanced techniques/Novel sources: Advanced ConceptsPoster Presentation
А semi-infinite waveguide with a multilayer wall, the input aperture of which is covered by an infinitely thin ideally conducting plane is being considered. The regularities of the propagation of wave fronts of transition radiation and wake radiation accompanying the motion of a particle are determined for a single-layer resistive and a two-layer copper-dielectric waveguide. For the same...
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Dr Gevick Davoodi (Armenian National Agrarian University), Laya Anjo (Center for the Advancement of Natural Discoveries using Light Emission), Mrs Milena Yazichyan (Center for the Advancement of Natural Discoveries using Light Emission)19/05/2026, 16:00MC8.U08: Radiation EffectsPoster Presentation
The operation of particle accelerators subjects shielding materials to high thermomechanical and irradiation stresses. This study offers a theoretical and computational investigation of the radiation-tolerant properties of TiO₂–ZrO₂ nano-oxide composites. The combination of defect-sensitive TiO₂ (high efficiency for charge trapping) and phase-stable ZrO₂ (transformation toughening) would...
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Ihar Lobach (Brookhaven National Laboratory)19/05/2026, 16:00MC2.A24: Photon sources: Accelerators and Storage Rings, OtherPoster Presentation
Recently, an EPICS IOC server was installed in NSLS-II storage ring which provides real-time optics information during the user service periods. The server calculates the storage ring optics using the turn-by-turn (TBT) BPM data triggered by the disturbance from the injection kickers. The data are verified to be reliable, and the efforts are being invested to implement optics feedback system...
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Xuanying Song (Tsinghua University)19/05/2026, 16:00MC2.T26: Photon sources: Photon Beam Lines and ComponentsPoster Presentation
Wave-optical simulation of undulator radiation through X-ray beamlines is computationally prohibitive, limiting real-time optimization. The high-frequency diffraction structures and extreme dynamic range of focal spot distributions pose significant challenges to conventional surrogate models. We propose a log-manifold surrogate modeling framework that represents intensity distributions in...
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Simone Di Mitri (Elettra-Sincrotrone Trieste S.C.p.A.)19/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
In regime of diffraction-limited electron beams at x-ray wavelengths, the spectral width of fundamental spontaneous undulator radiation is at ~1% level, and down to 0.01% for free-electron lasers (FELs). Consequently, the traditional characterization of brilliance in units of 0.1% bandwidth tends to overestimate the actual brilliance of longitudinally coherent sources. An update version of the...
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Frank Jackson (Science and Technology Facilities Council)19/05/2026, 16:00MC3.T02: Advanced techniques/Novel sources: Electron SourcesPoster Presentation
The CLARA accelerator at Daresbury Laboratory has recently commissioned a new electron gun as part of a larger upgrade to the machine. The new gun (‘HRRG’) is a high rep rate (400 Hz) 1.5 cell cavity (3 GHz fundamental frequency) designed to produce low emittance beams up to 5 MeV/c, with cathode fields up to 120 MV/m and RF pulse lengths of up to 3 us. The previous CLARA gun (‘LRRG’) was a...
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Donish Khan (SLAC National Accelerator Laboratory)19/05/2026, 16:00MC2.A04: Photon sources: Circular AcceleratorsPoster Presentation
We report on the development of an advanced storage ring lattice, the Stanford Diffraction-Limited Light Source (SDLS), tailored for installation in the existing PEP-II tunnel at SLAC. The design is based on the hybrid 6-bend achromat (H6BA) architecture optimized for ultra-low emittance while maintaining robust nonlinear dynamics, essential for diffraction-limited synchrotron radiation...
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Yin Kang (Shanghai Advanced Research Institute, Chinese Academy of Sciences)19/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
Vortex radiation carries orbital angular momentum (OAM) and is attractive for applications including chiral characterization, magnetic imaging, and ultrafast light--matter interaction studies. A scheme for vortex radiation generation and diagnostics at the Shanghai Soft X-ray Free-Electron Laser facility (SXFEL) based on wavefront shaping of a 266 nm external seed laser is studied....
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Minxin Wu (Anhui University)19/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
Since May 2022, the researchers at Anhui University, Hefei, China have been constructing an internationally advanced infrared free-electron laser (IR-FEL) facility. The project mainly includes one FEL light source device, six experimental stations, and other supporting systems. The tunable IR-FEL system covers the mid-infrared to far-infrared bands. Its linear accelerators provide an electron...
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Mr Michael Sigrist (Canadian Light Source (Canada))19/05/2026, 16:00MC7.T15: Technology: Undulators and WigglersPoster Presentation
The Canadian Light Source (CLS) currently operates a 1.9 T superconducting wiggler (SCW) that has been in service since 2005. As the risk of failure and maintenance requirements for this aging device increase, and funding for a permanent replacement remains pending, an interim solution is needed to ensure continued beamline operation. Reconfiguring a decommissioned permanent magnet undulator...
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Andrea Cernuschi (Laboratoire de Physique Subatomique et de Cosmologie)19/05/2026, 16:00MC3.A15: Advanced techniques/Novel sources: New Acceleration Concepts and TechniquesPoster Presentation
This study presents the current advancement on our investigation of the Electron Cyclotron Resonance Ion Plasma Accelerator (ECRIPAC), revisiting and greatly expanding this original accelerator concept initially developed in the nineties*. ECRIPAC is an innovative compact plasma device able to generate energetic pulsed ion beams using robust and well mastered electron cyclotron resonance ion...
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Yubin Zhao (Shanghai Advanced Research Institute, Chinese Academy of Sciences)19/05/2026, 16:00MC2.A08: Photon sources: Linear AcceleratorsPoster Presentation
SHINE is an 8 GeV continuous-wave (CW) free-electron laser (FEL) facility, mainly composed of an injector, a linear accelerator, an undulator segment, and experimental beamlines. Currently, for the accelerator section, the commissioning of the injector and the L1 segment of the linear accelerator has been completed. The RF structures in these two segments include a VHF electron gun, an L-band...
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Niels Bidault (University of Hawaiʻi at Mānoa)19/05/2026, 16:00MC2.A08: Photon sources: Linear AcceleratorsPoster Presentation
The S-band electron linac and free-electron-laser facility at the University of Hawai‘i at Manoa is being recommissioned after an extended period of inactivity. Following the restoration of vacuum and thermionic cathode systems, recent work focused on the high-power RF chain and on conditioning of the linac and microwave electron gun. We report RF conditioning measurements obtained during...
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Vladimir Zvyagintsev (TRIUMF)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
The horizontal injection section of the TRIUMF 500 MeV cyclotron has been replaced after 50 years of operation and the historic buncher configuration which consists of two separated double-gap bunchers for the 1st and 2nd harmonics of the cyclotron RF frequency of 23.06 MHz were successfully replaced with a multi-harmonic buncher operating on three harmonics. The novel multi-harmonic buncher...
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Zhicheng Huang (University of Science and Technology of China)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
In this paper, we present the RF design of a brazing-free high repetition S-band photogun, emphasizing the innovative use of brazing-free technology to enhance performance and reliability. The primary objective is to optimize the structural parameters to achieve a repetition frequency of 100Hz while simultaneously reaching a cathode field strength of 100 MV/m. Through simulations, we...
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Zexin Cao (University of Science and Technology of China)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
This paper presents the design of a compact X-band two-stage pulse compression system featuring bowl-shaped open cavities, developed for a newly acquired 6-MW X-band klystron. The system consists of a correction cavity chain, a first-stage and a second-stage storage cavity. By employing bowl-shaped geometries, which have an unloaded quality factor ($Q_0$) higher than those of spherical...
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Xiaowei Wu (Zhangjiang Laboratory)19/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
Superconducting radio-frequency (SRF) cavities represent a key technology for modern particle accelerators. In high-current energy recovery linac (ERL) facilities, suppressing higher-order modes (HOMs) is critical to ensure beam stability and minimize additional cryogenic heat loads. This work introduces a waveguide-based scheme to extract and damp harmful HOMs excited by intense beams. A...
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Louise Cowie (ASTeC, STFC Daresbury Laboratory)19/05/2026, 16:00MC3.T02: Advanced techniques/Novel sources: Electron SourcesPoster Presentation
The RUEDI RF photoinjector will have a 2.4 cell S-band gun producing electrons at 4 MeV. The gun is designed to operate at 1 kHz repetition rate. This will be achieved by a combination of RF over-coupling to reduce the pulse length, and an advanced water cooling system based on that of the CLARA 400 Hz photoinjector. The shorter pulse length is also intended to limit the dark current, along...
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Silvia Verdu-Andres (Brookhaven National Laboratory)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
Two normal-conducting RF cavities at 49 MHz and 98 MHz have been developed for the bunch-splitting system in the Hadron Storage Ring of the Electron-Ion Collider. Both cavities use compact quarter-wave-resonator structures to satisfy RF, mechanical, and tunnel-integration constraints. Key components, including the fundamental power coupler (FPC), fundamental mode damper (FMD),...
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YUXIN CHENG (Shanghai Institute of Applied Physics, Chinese Academy of Sciences, University of Chinese Academy of Sciences)19/05/2026, 16:00MC2.A29: Ultrafast electron diffraction and ultrafast electron microscopyPoster Presentation
We formulate the design of a UED-oriented RF gun as a constrained longitudinal-dynamics problem and obtain a nonuniform 2.33-cell S-band solution with controlled longitudinal dispersion. The representative solution, (0.4, 0.93, 1), operated near 45 MV/m, brings the phases of maximum energy gain and minimum time of flight (TOF) into near coincidence and thereby yields a well-defined gun...
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Michael Ehrlichman (SLAC National Accelerator Laboratory)19/05/2026, 16:00MC2.A08: Photon sources: Linear AcceleratorsPoster Presentation
RF kicks are produced by misalignments between an electron beam in the acceleration structure. By analyzing these kicks, produced by the super conducting standing wave accelerator for the Linac Coherent Light Source (LCLS-II), a few unexpected observations were recognized. Initially an out-off-phase (90 deg off the accelerating phase) component was observed, which is similar in size to the...
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Kai Shih (Realta Fusion), Joey Eickman (Realta Fusion), Antoine Latrille (Realta Fusion)19/05/2026, 16:00MC8.A28: Applications: Industrial AcceleratorsPoster Presentation
This work presents Particle-in-Cell (PIC) simulations using WarpX [1] to study neutral beam injection (NBI) [2] physics in Wisconsin HTS Axisymmetric Mirror (WHAM) [3-5]-class beamlines as part of a DOE INFUSE collaboration between Realta Fusion and Lawrence Berkeley National Laboratory. The goal is to develop a self-consistent model that couples beam extraction, gas neutralization,...
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Weibo Hu (University of Science and Technology of China)19/05/2026, 16:00MC7.T34: Permanent MagnetsPoster Presentation
We present a septum magnet based on permanent magnet (PM) for HEFEI ADVANCED LIGHT FACILITY (HALF). Permanent magnet are expected to save more energy and take up less space.
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Maria Ilaria Besana (Paul Scherrer Institute)19/05/2026, 16:00MC3.T39: Advanced techniques/Novel sources: Positron sourcesPoster Presentation
The Future Circular Electron-Positron Collider (FCC-ee) is a proposed next-generation particle accelerator, planned as the first stage of the larger Future Circular Collider project at CERN. It is an electron-positron collider designed to be a precision instrument for studying fundamental physics.
The PSI Positron Production (P$^{3}$) is the planned proof-of-principle experiment for the...
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Evan Ericson (Paul Scherrer Institute)19/05/2026, 16:00MC3.A16: Advanced techniques/Novel sources: Advanced ConceptsPoster Presentation
SwissFEL has two 1 m-long planar dielectric wakefield structures used for dechirping electrons in its hard X-ray beamline, Aramis. Simulations show the structures also support wakefields that can be used to accelerate following particle beams. Here we introduce the dielectric wakefield structures and ECHO2D simulations that show the longitudinal wake potential dependence on structure gap and...
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Lodewyk Steyn (Laboratoire de Physique des Gaz et des Plasmas (LPGP), CNRS, Université Paris-Saclay)19/05/2026, 16:001MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationPoster Presentation
The quality of electron beams produced by Laser Wakefield Acceleration (LWFA), is controlled through laser parameters and plasma density distribution during the injection and acceleration phases, and in some cases, a specific device providing beam selection or shaping to achieve the electron beam quality needed the envisaged application.
A major challenge in the generation of LWFA electron...
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19/05/2026, 16:001MC2.T12: Photon sources: Beam Injection/Extraction and TransportPoster Presentation
This study investigates the feasibility of high-charge, low-energy 300 MeV linac-to-booster injection for the High Energy Photon Source (HEPS) injector. The primary aim is to enable a klystron hot-standby for the HEPS linac, thereby enhancing its operational reliability. Energy ramping simulations for the booster were conducted using elegant. Both Gaussian and non-Gaussian bunches were...
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Guanzheng Wu (University of Science and Technology of China)19/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
Hefei infrared Free Electron Laser (HiFEL) facility aims to provide high-quality lasers with wavelengths covering the mid to far infrared range. However, there is an obvious decrease in the output power at long wavelengths. The mode field mismatch and truncation loss at the waveguide to free space region are the main reasons for low output power. We propose a full waveguide design and...
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Jean-Michel Horodynski (Centre National de la Recherche Scientifique)19/05/2026, 16:00MC8.U06: EnvironmentPoster Presentation
The Simβ-AD project has been launched in 2022 to resolve the issue regarding the radiological characterization of radioactive waste generated by cyclotron facilities, including β only emitters such as 63Ni, ⁵⁵Fe and ⁴⁹$V. The main goal of Simβ-AD is to develop a methodology that couples an innovative active neutron detector with Monte Carlo simulations. Neutron fluence computed by the RayXpert...
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Gabriel Ascenção (Brazilian Synchrotron Light Laboratory, Universidade Estadual de Campinas (UNICAMP))19/05/2026, 16:00MC2.A24: Photon sources: Accelerators and Storage Rings, OtherPoster Presentation
The SIRIUS is a fourth-generation Brazilian synchrotron light source whose high brilliance performance is determined by its low nominal electron beam emittance. The measurement of this parameter is crucial to validate the machine design, perform diagnostics, and guarantee beam quality for users. This work presents a methodology to measure the emittance at SIRIUS, combining spectral and spatial...
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Dr Alan Marcia (Fondazione Bruno Kessler, University of Trento)19/05/2026, 16:00MC3.A15: Advanced techniques/Novel sources: New Acceleration Concepts and TechniquesPoster Presentation
The miniaturization of particle accelerators via Dielec
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tric Laser Acceleration (DLA) * offers a route to ultra
compact, cost-effective devices poweredbycommerciallaser
systems. This work explores the extension of DLA technol
ogy—historically focused on electrons—to protons, aiming
to enable "on-chip" sources of high energy hadrons. We
present the design and simulation of a novel... -
Taylor Roybal (Los Alamos National Laboratory)19/05/2026, 16:00MC7.T38: Mechanical designPoster Presentation
The Los Alamos Neutron Science Center (LANSCE) uses 1.25 MW 805 MHz klystrons to power the coupled cavity linac (CCL) that accelerates H- beam from 100 to 800 MeV. Solid-state amplifiers can replace klystrons while providing the same energy input to the CCL. The solid-state amplifiers will require cooling to ensure the radio frequency (RF) components don’t overheat.
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The existing water system... -
Mr Christopher Roper (Los Alamos National Laboratory, Georgia Institute of Technology)19/05/2026, 16:00MC3.T02: Advanced techniques/Novel sources: Electron SourcesPoster Presentation
The aim of this research is to improve the design and physics basis of a modulating-anode electron gun for future space-based electron accelerator missions. Unlike grid-controlled sources, a mod-anode introduces a separate biased electrode between the cathode and main anode, allowing direct control of the accelerating field profile. We investigate how the mod-anode potential shapes the...
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Mariia Seniak (Lviv University)19/05/2026, 16:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationPoster Presentation
Plasma Accelerators can generate high-energy electron bunches over just a few centimetres of distance, offering the potential to become a promising alternative to conventional particle accelerators.
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In our work we performed numerical simulations of wakefield excitation by a strong laser pulse using the OSIRIS code to investigate the mechanisms for controlling the accelerated bunch. We... -
Johan Ribbing (Uppsala University)19/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
Free electron lasers can now generate xray pulses with durations in the attosecond regime.
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Optimal utilization of the short pulses for attosecond science necessitates precise measurement of the pulse durations which there are promising methods to achieve.
However, these are developing experimental techniques, not yet routine procedure.
Until they mature, there is a wealth of information in... -
Haisheng Xu (Institute of High Energy Physics, Chinese Academy of Sciences)19/05/2026, 16:00MC2.A04: Photon sources: Circular AcceleratorsPoster Presentation
The High Energy Photon Source is the first fourth-generation synchrotron light source in Asia. As a green-field facility, HEPS began construction in 2019 and now the commissioning of the storage ring has been basically finished. The booster synchrotron, serving as the second-stage accelerator, completed its initial beam commission-ing between July and November 2023 and was officially put into...
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Evgenya Simakov (Los Alamos National Laboratory)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
This presentation will report on the status of assembling and commissioning of the Cathodes And Radio-frequency Interactions in Extremes (CARIE) C-band high gradient photoinjector test facility and the status of high gradient testing of a 1.6 cell C-band RF photoinjector at Los Alamos National Laboratory (LANL). The construction of CARIE began in October of 2022. CARIE will house a high...
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Stefano Farina (Sapienza University of Rome)19/05/2026, 16:00MC3.T02: Advanced techniques/Novel sources: Electron SourcesPoster Presentation
FLASH radiotherapy is emerging as a transformative modality in cancer treatment, capable of achieving tumor control while significantly reducing normal-tissue toxicity, thereby improving the overall therapeutic index. To fully exploit this effect—particularly for deep-seated tumors—Very High-Energy Electrons (VHEE) in the 50–150 MeV range are required.
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Within this framework, and as part of... -
Stewart Boogert (Cockcroft Institute)19/05/2026, 16:00MC7.T34: Permanent MagnetsPoster Presentation
The proposed energy upgrade of the Continuous Electron Beam Accelerator Facility (CEBAF) incorporates Fixed-Field Alternating-gradient (FFA) arcs utilizing permanent magnet technology. Given the radiation environment within the CEBAF tunnel enclosure, validating the long-term magnetic stability of these materials is a critical step for the project's technical feasibility. This contribution...
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Shota Nishi (The Graduate University for Advanced Studies, SOKENDAI)19/05/2026, 16:00MC7.T10: Superconducting MagnetsPoster Presentation
KEK Photon Factory is developing a Nb_3 Sn superconducting multipole wiggler (SC-MPW) for a next generation light source ring. The test coil unit has three round Nb_3 Sn coils and works as a three-pole wiggler. Nb_3 Sn superconductivity is strain sensitive, and training of resin impregnated Nb_3 Sn magnets could be limited by wire motion or cracks of the resin. Thus, it is important to monitor...
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Josef Troxler (Ampegon Power Electronics AG)19/05/2026, 16:00MC8.U10: Technology Transfer and Lab IndustryPoster Presentation
The Accelerator Industry Permanent Forum (AIPF) has rapidly evolved into a strategic platform connecting industry and research institutions across Europe. AIPF’s mission is to enhance cooperation within the accelerator ecosystem, fostering industrial engagement in Big Science initiatives.
In two years since its creation, AIPF has been involved in several high-level European policy-shaping...
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Pierre Korysko (University of Oxford), Wilfrid Farabolini (European Organization for Nuclear Research)19/05/2026, 16:00MC8.U01: Health & BiologyPoster Presentation
The CERN Linear Electron Accelerator for Research (CLEAR) provides versatile electron beams for multidisciplinary studies, including advanced research on Very High Energy Electrons (VHEE, 100–200 MeV) at Ultra-High Dose Rates (UHDR >10⁸ Gy/s) for radiotherapy in the FLASH regime, in which normal tissue toxicity is reduced when the dose is delivered within milliseconds. Leveraging CLEAR’s...
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Xueting Wu (University of Science and Technology of China), Fang Li (University of Science and Technology of China)19/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
The autonomous alignment and optimization of synchrotron beamlines pose significant challenges. Traditionally, manual alignment is a time-consuming and experience-dependent process, often requiring extensive diagnostic efforts and data collection. With the construction of the Hefei Advanced Light Facility (HALF) underway, the development of a virtual platform for beamlines will be an...
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Shoaib Akbar (Sapienza University of Rome)19/05/2026, 16:00MC3.T02: Advanced techniques/Novel sources: Electron SourcesPoster Presentation
A 24-MeV prototype LINAC is under development at Sapienza University of Rome for FLASH radiobiological studies. The injector is a 12-keV triode thermionic electron gun from HeatWave Labs, providing grid-controlled current modulation for high current, low perveance, and short-pulse operation. To optimize its integration with the 24 MeV C-band hybrid standing and travelling wave structure,...
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Chengzhe Wang (University of Science and Technology of China)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
The TM020-mode cavity offers a high quality factor, a large shunt impedance, and effective higher order modes (HOMs) damping, while maintaining a compact longitudinal structure. However, in single-input cavities, the coupling iris experiences excessive thermal loading as the input power increases, and insufficient cooling eventually degrades cavity performance. To address this issue, we...
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Yuejing Huang (National Synchrotron Radiation Laboratory)19/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
The SOLEIL II storage ring will be equipped with many in-vacuum undulators (IVUs) and superbends, which are vulnerable to gas scattering–induced beam losses due to their small vertical gaps. In this paper, gas scattering–induced beam losses in SOLEIL II are studied with tracking simulations. The results show that, without vertical scrapers, 53$\%$ of elastic scattering–induced losses happen at...
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Chi Hyun Shim (Pohang Accelerator Laboratory)19/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
Recent experiments at the PAL-XFEL hard X-ray beamline have reported that X-ray microscopy measurements performed with an XFEL beam of 10 keV fundamental photon energy exhibit a significantly improved signal-to-noise ratio when using self-seeded FEL pulses compared to SASE FEL pulses. A possible explanation suggested in those studies is that self-seeded FELs produce substantially lower...
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Yi-Chen Yang (National Synchrotron Radiation Research Center)19/05/2026, 16:00MC7.T14: Vacuum TechnologyPoster Presentation
High-energy electron beams operating in accelerator vacuum chambers can easily cause heat accumulation on the surfaces of in-vacuum components. When convective cooling and effective conductive heat dissipation are limited, the thermal radiation capability of material surfaces becomes an important heat dissipation mechanism. In this study, copper oxide (CuO) thin films were deposited on...
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NanRui Yang (University of Science and Technology of China)19/05/2026, 16:00MC2.T15: Photon sources: Undulators and WigglersPoster Presentation
The fast polarization switching of undulator radiation has attracted more and more attention in recent years. Recently, a new method has been proposed for fast polarization switching up to kilohertz of undulator radiation by using magnetic field modulation generated from low-current electromagnetic coils. Through fast switching the power of coils, the radiation spectra of two undulators can be...
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Tao Guo (University of Science and Technology of China)19/05/2026, 16:00MC7.T14: Vacuum TechnologyPoster Presentation
Non-evaporable getter (NEG) thin films are essential for achieving ultra-high vacuum in the narrow-bore chambers. Pd/Ti bilayer NEG thin films were deposited on oxygen-free copper and silicon substrates by DC magnetron sputtering. The microstructure and elemental distribution were characterized by scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS). The films...
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Mr Aras Amini (University of Manchester, Cockcroft Institute)19/05/2026, 16:00MC3.A16: Advanced techniques/Novel sources: Advanced ConceptsPoster Presentation
There is a growing demand for generating and transporting very short femtosecond-scale, high-charge-density relativistic electron bunches [1-2]*. Applications range from extreme light sources such as free-electron lasers to future linear colliders. Laser-plasma wakefield accelerators (LWFA) [3] offer a promising approach for compact high-gradient acceleration, but electrons generated directly...
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Kota Ueshima (National Institutes for Quantum Science and Technology)19/05/2026, 16:00MC2.A24: Photon sources: Accelerators and Storage Rings, OtherPoster Presentation
NanoTerasu is a newly constructed 3 GeV light source located in Sendai, Japan. The circumference of storage ring (SR) is 349 m and the natural emittance is 1.1 nm rad which is realized by the double-double-bend achromat lattice. The compact normal-conducting RF cavity operating in the TM020 mode with higher-order mode (HOM) dampers is employed for beam acceleration. The commissioning of the SR...
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Ping-Shun Chuang (National Synchrotron Radiation Research Center)19/05/2026, 16:00MC7.T13: CryogenicsPoster Presentation
At the Taiwan Photon Source (TPS) a cryogenic permanent magnet undulator, CUT18, utilizes the latent heat of vaporization of liquid nitrogen for magnet cooling. After a period of operation, some condensed water, which caused rust at the structure of CUT18, appeared at the flange connecting the cooling system and the vacuum beam chamber of CUT 18. This condensed water was mainly due to...
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Jui-Che Huang (National Synchrotron Radiation Research Center)19/05/2026, 16:00MC7.T15: Technology: Undulators and WigglersPoster Presentation
A sustainability-oriented cryogenic permanent magnet undulator, the LN₂-enabled C³-CPMU, has been success-fully demonstrated at the Taiwan Photon Source (TPS). The system is designed to address cryogenic performance, thermal stability, and cost efficiency for high-current storage ring operation (up to 500 mA). The undulator employs a conduction-cooled architecture combined with an LN₂...
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Zhuoyuan Liu (Tsinghua University)19/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
Coherent synchrotron radiation (CSR) is a critical effect in the design and operation of high-brightness electron accelerators, as it can lead to significant energy loss and emittance growth. In this paper, we present SymCSR, a first-principle tracking program for simulating the 6D phase space dynamics of electron beams under the influence of CSR. SymCSR computes the radiation reaction field...
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Dr Weijie Fan (Shanghai Advanced Research Institute, Chinese Academy of Sciences)19/05/2026, 16:00MC2.A24: Photon sources: Accelerators and Storage Rings, OtherPoster Presentation
Strong wigglers are installed in the storage ring to provide a strong damping effect and thus can make the particle beam reach an equilibrium state quickly. Nevertheless, particle tracking of damping wigglers with strong peak field strengths typically uses the field map analysis approach, which does not account for radiation effects and quantum excitations in ELEGANT. To address this, the...
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Sung-Woo Lee (Oak Ridge National Laboratory)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
The Spallation Neutron Source (SNS) Drift Tube Linac (DTL) employs iris couplers to efficiently deliver RF power into the accelerating structure. To support the development, tuning, and high-power conditioning of these couplers prior to installation in the actual DTLs, a dedicated test cavity and an iris-to-coaxial transition structure have been designed. This work presents the electromagnetic...
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Stefano Farina (Sapienza University of Rome)19/05/2026, 16:00MC8.U01: Health & BiologyPoster Presentation
Delivered at Ultra-High Dose Rates (UHDR), in the so-called FLASH regime, electron irradiation has shown the remarkable ability to spare healthy tissues while preserving tumor control, opening new perspectives for next-generation cancer treatments. The advancement of high-gradient accelerating structures has enabled the development of compact and cost-effective linear accelerators suitable for...
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Frank Tecker (European Organization for Nuclear Research)19/05/2026, 16:00MC8.U11: Outreach and CommunicationsPoster Presentation
The field of accelerator science and technology is crucial for advancements in fundamental physics, medical applications, and industrial processes, and via its technological inventions has a considerable impact on society.
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The specialized nature of the accelerator domain necessitates highly skilled personnel. However, the domain of accelerator science and technology is rarely taught as it... -
Yi-Chieh Chang (National Synchrotron Radiation Research Center)19/05/2026, 16:00MC2.A08: Photon sources: Linear AcceleratorsPoster Presentation
The NSRRC photoinjector generates ultrashort electron beams for the production of superradiant radiation in the 100–500 μm wavelength range using a gap tunable U100 planar undulator. The accelerator consists of an S band, laser driven photocathode RF gun equipped with a compensation solenoid, followed by a 5 m long linear accelerator. Sub picosecond electron bunches are achieved through...
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Yan Zhao (Tsinghua University)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
A quasi-traveling-wave parallel-coupled (TWPC) accelerating structure is proposed for compact linacs requiring both high RF efficiency and improved frequency tolerance. In contrast to conventional standing-wave parallel-coupled structures, the proposed topology enables partial reflected power generated under detuned conditions to be redistributed through the feeding manifold and reabsorbed by...
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Binghao Zhang (National Synchrotron Radiation Laboratory, USTC)19/05/2026, 16:00MC2.T15: Photon sources: Undulators and WigglersPoster Presentation
The APPLE-KNOT undulator forms composite magnetic fields by superimposing APPLE and KNOT fields with different period lengths. In this configuration, in which the APPLE field serves as the dominant component to approximate the target photon energy, while the KNOT field acts as an additional component to transversely deflect the electron beam off-axis. Although variable polarization modes can...
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Chunguang Jing (Euclid Beamlabs)19/05/2026, 16:00MC7.T07: Superconducting RFInvited poster
We are excited to report on the first beam produced by the world’s first conduction cooled SRF photogun. Over the past five years, Euclid, working in collaboration with Fermilab and Argonne National Laboratory, has been developing a continuous-wave (CW), 1.5-cell, MeV-scale, conduction-cooled SRF photogun operating at 1.3 GHz. The primary objective of this effort is to demonstrate ultra-stable...
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647. The Generation of Variable Polarization States in Terawatt X-Ray Free-Electron Lasers (TUP2313)Henry Freund (University of Maryland, College Park)19/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
Terawatt x-ray free-electron lasers (XFELs) represent the frontier in further development of x-ray sources and require high current densities with strong transverse focusing. In this paper, we investigate the implications/potentialities of TW XFELs on the generation of variable polarization states. The simulations indicate that significant power levels are possible with polarizations ranging...
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Johan Ribbing (Uppsala University)19/05/2026, 16:00MC3.A15: Advanced techniques/Novel sources: New Acceleration Concepts and TechniquesPoster Presentation
When charged particles interact with laser fields,
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they are usually thought to be pushed out from the regions of higher laser intensity
via the mechanism known as the ponderomotive force (PMF).
In contrast to the existing theories, we show that there exist several regimes
in which charged particles are drawn into the regions of strongly focused laser fields.
We derive a simple,... -
Xianghe Fang (Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
The TEX (TEst stand for X band) facility at INFN-LNF is a high-power RF test stand dedicated to the qualification of X-band components and accelerating structures for the EuPRAXIA@SPARC_LAB linac and related projects. An upgrade program is underway to extend its capabilities by increasing the available peak and average power, repetition rate, and operational flexibility for both X-band (11.994...
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Jose Manuel Perez (Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas)19/05/2026, 16:00MC8.U10: Technology Transfer and Lab IndustryPoster Presentation
European accelerator research involves more than 150 institutions –research and technology infrastructures, universities and industry– meaning that impactful R&D requires large, well-structured collaborations among all innovation actors. The European Commission’s framework programmes can play a strategic role in enabling these collaborations, but their effectiveness depends on coherent...
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Zhouyu Zhao (University of Science and Technology of China)19/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
Seeded free-electron lasers (FELs) are advanced, accelerator-based light sources characterized by high coherence and stability. In our previous research, we proposed an intelligent optimization framework for studying the micro-bunching process in seeded FELs. Using this framework for exploratory optimization, we identified a novel seeded FEL scheme. This scheme employs an optical layout...
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Zipeng Liu (Shanghai Zhangjiang Laboratory)19/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
Free-electron lasers (FELs) have promising application prospects in diverse fields such as physics, chemistry, and materials science. FEL facilities based on continuous-wave superconducting linear accelerators represent the state-of-the-art and future direction for FEL development. Generating high-brightness electron beams is essential for producing high-quality FEL pulses. The injector for...
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Dr Shane Koscielniak (TRIUMF)19/05/2026, 16:00MC7.T06: Normal Conducting RFPoster Presentation
Yttrium-Iron-Garnet (YIG) ferrites have one-to-two orders of magnitude smaller magnetic permeability than Ni-Zn ferrites. In the frequency range above 10 MHz, Ni-Zn ferrites are too lossy to be useful. However in the frequency range roughly 30-120 MHz, YIG has high magnetic (and electrical) quality factor. Further, ferrites perpendicular-biased near saturation, have large incremental...
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Giovanna Vandoni (European Organization for Nuclear Research)19/05/2026, 16:00MC8.U11: Outreach and CommunicationsPoster Presentation
Across Europe, several large-scale particle accelerator and big-science projects — each exceeding hundreds of millions of euros and extending over a decade — are under design or construction, with comparable initiatives underway in the US and China. Despite remarkable scientific achievements, many of them face cost and schedule drift, even when scientific performance targets haven’t been...
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Frank Herfurth (GSI Helmholtz Centre for Heavy Ion Research)19/05/2026, 16:00MC3.A21: Advanced techniques/Novel sources: Secondary BeamsPoster Presentation
The HITRAP decelerator facility has been designed to supply heavy, highly charged ions with low energy and momentum spread for use in physics experiments. It comprises several accelerator components for deceleration and a Penning trap for cooling ion bunches using electrons. The most exotic heavy, highly charged ions as for example bare Uranium ions are produced using the GSI accelerator...
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Jack Phillips (Particle Beam Physics Lab (PBPL))19/05/2026, 16:00MC2.A25: THz sourcesPoster Presentation
Dielectric wakefield acceleration, driven by electron beams, generates high-power, narrowband terahertz radiation via the coherent Cherenkov emission. While conventional dielectric-lined waveguides have been studied extensively for fundamental mode excitation, recent theory suggests higher-order modes carrying orbital angular momentum (OAM) can be deliberately excited in modified structures....
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Dr Thilo Egenolf (Technical University of Darmstadt)19/05/2026, 16:00MC3.A16: Advanced techniques/Novel sources: Advanced ConceptsPoster Presentation
Dielectric laser acceleration (DLA) enables compact, chip-scale accelerators. Recent demonstrations of multi-stage acceleration, alternating-phase focusing and interaction length in the millimeter range in dielectric nanostructures have verified the scalability of DLA concepts but the compactness places extreme demands on beam diagnostics due to submicron apertures, sub-fs bunch lengths and...
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Jack Hirschman (Stanford University, SLAC National Accelerator Laboratory)19/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
LCLS-II introduces MHz-rate operation and sub-femtosecond X-ray pulses, creating a need for high-rate control mechanisms at the photoinjector and diagnostic systems capable of extracting pulse structure on every shot. This work presents two key components toward meeting these requirements. First, a programmable photoinjector-laser system combining a spatial light modulator with...
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Laury Batista (Commissariat à l'Énergie Atomique et aux Énergies Alternatives)19/05/2026, 16:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationPoster Presentation
Compared to RF accelerators, laser-plasma interaction produces beams with significantly larger emittance, energy spread, and divergence, necessitating dedicated transport line designs. This study investigates beam dynamics in various transport line configurations between plasma stages and towards the end users. Design and optimization of these lines are performed according to the requests on...
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Bhavini Singh (Los Alamos National Laboratory), Taylor Roybal (Los Alamos National Laboratory)19/05/2026, 16:00MC7.T38: Mechanical designPoster Presentation
High-power accelerators intended for space require more efficient cooling technologies. Flow boiling, a two-phase process, where water is boiled to dissipate the heat reduces size, weight, and power (SWaP) of thermal control systems (TCS).
The purpose of this work is to understand the flow and bubble dynamics of two-phase flows designed for space TCS. We present the experimental setup to...
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Dr Miriam Brosi (Karlsruhe Institute of Technology)19/05/2026, 16:00MC8.U01: Health & BiologyPoster Presentation
The linac-based test facility FLUTE at the Karlsruhe Institute of Technology (KIT) can be operated with a wide range of beam parameters, such as bunch charge, bunch length and repetition rate. This flexibility makes FLUTE an interesting test-bed for studies of accelerator-based ultra-high dose-rate irradiation with electron beams. Based on the time structure of the produced electron pulses,...
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Nicolas Burdet (SLAC National Accelerator Laboratory), Rachel Margraf-O'Neal (Argonne National Laboratory)19/05/2026, 16:00MC2.T25: Photon sources: LasersPoster Presentation
Low-loss ultraviolet (UV) transverse shaping has emerged as a critical enabling technology for modern photoinjectors, with fused-silica phase-plates offering a robust alternative to conventional shaping methods. Building on our NAPAC2025 work, we introduce a new generation of enhanced UV phase-plates that use genetically seeded structured-stochastic designs and multi-level nanofabrication....
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Katrina Howard (University of Chicago)19/05/2026, 16:00MC7.T07: Superconducting RFPoster Presentation
The SRF community has shown that high temperature annealing can improve the flux expulsion of niobium cavities during cooldown. The required temperature will vary between cavities and different batches of material, typically around 800 C and up to 1000 C. However, for niobium with a low residual resistance ratio (RRR), even 1000 C is not enough to improve its poor flux expulsion. The purpose...
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Junha Kim (Pohang Accelerator Laboratory)19/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
Beam orbit stability is a critical requirement for fourth-generation synchrotron radiation facilities. An initial evaluation for the Korea-4GSR quantified expected orbit disturbances from ground vibration, magnet current ripple, and energy oscillations. Since that baseline study, additional measurements and refined models have enabled a more accurate assessment. Newly acquired ground-motion...
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Xiujie Deng (Tsinghua University)19/05/2026, 16:00MC2.A04: Photon sources: Circular AcceleratorsPoster Presentation
In this paper, we propose to use longitudinal strong focusing principle to lower particle beam energy spread locally in a storage ring. An example application of the proposed scheme in reversible Echo SSMB for high-power EUV radiation generation is presented. We believe strong focusing in the longitudinal dimension has a wide application potential.
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Dr Weilun Qin (Institute of High Energy Physics, Chinese Academy of Sciences)19/05/2026, 16:00MC2.A29: Ultrafast electron diffraction and ultrafast electron microscopyPoster Presentation
Femtosecond electron beams serve as effective tools for investigating ultrafast dynamic processes in matter, providing complementary capabilities to femtosecond laser beams. We propose and demonstrate the feasibility of a scheme combining an undulator with THz modulation to generate isolated few-femtosecond electron bunches. We have developed a theoretical method that incorporates the...
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Thongchai Leetha (Synchrotron Light Research Institute)19/05/2026, 16:00MC7.T38: Mechanical designPoster Presentation
Achieving high beam stability in the 3 GeV SPS-II storage ring critically depends on the precision of its quadrupole magnets.This work presents a crucial phase of the magnet prototype development, which is central to fostering domestic high-technology manufacturing with Thai industry partners.Field measurements on the initial quadrupole design featuring removable poles revealed a critical...
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Joey Eickman (Realta Fusion), Antoine Latrille (Realta Fusion)19/05/2026, 16:00MC3.T01: Advanced techniques/Novel sources: Proton and Ion SourcesPoster Presentation
The US Department of Energy INFUSE collaboration between Realta Fusion and Lawrence Berkeley National Laboratory (LBNL) aims to extend WarpX towards high fidelity modeling of neutral beam injection (NBI) systems. WarpX is a parallel, open source, and portable particle-in-cell (PIC) code with an active developer community and demonstrated scalability. In this work, we implement and validate the...
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Prof. Mark Boland (University of Saskatchewan)19/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Invited poster
The WaterFEL is a national Infrared Free Electron Laser (IR FEL) facility that is funded and currently under development. Ground breaking for the new building that will house the facility has taken place at the University of Waterloo, Ontario, Canada. A design based on a similar facility at the Fritz Haber Institute in Berlin is being adapted for the WaterFEL accelerator and beamlines. The IR...
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Lanpeng Ni (Shanghai Institute of Applied Physics)19/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
Optical frequency comb (OFC) technology provides precise measurement tools for optical frequencies, leading to revolutionary changes in the field of optics.OFCs consist of a series of uniformly spaced spectral lines resembling the teeth of a comb, and they have found widespread applications in timing, precision spectroscopy, and fundamental physics.Extending this technology into the EUV to...
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jinke Xiong (Shanghai Institute of Applied Physics, Chinese Academy of Sciences)19/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
The ultrashort pulse concept, known as "measurement-before-destruction," pioneers ultrafast probing of sensitive states by allowing signal capture before significant laser-induced changes occur. While Free-Electron Lasers (FELs) drive progress in attosecond X-ray generation for electron dynamics, the next frontier—time-resolved nuclear dynamics—demands sub-attosecond to zeptosecond pulses at...
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Kyle Hazelwood (Fermi National Accelerator Laboratory)20/05/2026, 16:001MC4.A04: Hadron accelerators: Circular AcceleratorsInvited poster
In June 2024, the Fermilab Main Injector recorded its greatest one hour average beam power delivered to NuMI. The record 1.018 MW power was the culmination of years of work, involving upgrades to various systems to allow for greater beam intensity, better loss control and faster ramping of the machine. Following the record achievement, the Main Injector complex suffered a series of failures...
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Chuhao Li (Tsinghua University)20/05/2026, 16:001MC4.A04: Hadron accelerators: Circular AcceleratorsPoster Presentation
The longitudinal localized excitation slow extraction method reduces the energy spread of the extracted beam by applying transverse excitation exclusively within specific phase intervals at the edges of the longitudinal phase space of the bunch. For localized square-wave excitation, conventional amplitude modulation formula struggles to achieve uniform beam spill, while the temporal uniformity...
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Andrew Potter (Diamond Light Source)20/05/2026, 16:001MC6.T23: Machine ProtectionPoster Presentation
Due to the high energy density of the Diamond-II low-emittance electron beam, the risk of damage to storage ring components is considered high. A dedicated beam abort system is one way to safely dump the beam and protect the machine from damage. In this paper, we present the design of a beam abort system for the Diamond-II storage ring. The requirements of the key components will be described,...
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Siyuan Feng (Institute of High Energy Physics, Chinese Academy of Sciences)20/05/2026, 16:00MC1.A04: Colliders: Circular Accelerators and Storage RingsPoster Presentation
Electron cloud build-up simulations rely on accurate self-consistent electric field computation to correctly model the secondary emission cascade. The PyECLOUD code solves this via a Particle-in-Cell (PIC) approach using the Shortley-Weller finite-difference (SW-FD) Poisson solver. This work presents a Boundary Element Method (BEM) formulation for the electrostatic space-charge field that...
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1990. A Compatible Injection Scheme Design for the Super Tau-Charm Facility Collider Rings (WEP1624)Linhao Zhang (University of Science and Technology of China)20/05/2026, 16:00MC1.T12: Colliders: Beam Injection/Extraction and TransportPoster Presentation
The Super Tau-Charm Facility (STCF), a new-generation electron-positron collider proposed in China, is a major international scientific facility designed to operate in the center-of-mass energy range of 2–7 GeV, with luminosity at 4 GeV beyond 5x1034 cm-2s-1. It adopts third-generation collider design concepts, including ultra-small beam size, a large Piwinski angle, and the crab waist scheme....
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Emanuele Laface (European Spallation Source)20/05/2026, 16:00MC5.D03: Calculations of EM fields Theory and Code DevelopmentsPoster Presentation
The Radiofrequency Quadrupole (RFQ) is the initial accelerating device in many modern linear accelerators (linacs), such as the European Spallation Source (ESS), where it accelerates protons from 75 keV to 3.6 MeV. Due to its complex geometry, RFQ beam dynamics are typically studied using finite element solvers, which, while accurate, are computationally intensive and unsuitable for online...
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Gianluca Martino (Lawrence Berkeley National Laboratory)20/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
Advanced Light Source (ALS) control systems operate with continuous streams of more than 200\,000 EPICS Process Variables~(PVs). While most alarms are handled by manually setting a threshold, we present a configurable service that scores live PV streams for anomalies in real time, providing a flexible fault discrimination tool for operators. The service applies a recurrent neural network to...
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Alice Renaux (Laboratoire de Physique des 2 Infinis Irène Joliot-Curie)20/05/2026, 16:00MC6.T24: Instrumentation: Timing and SynchronizationInvited poster
Large-scale accelerators, including colliders and accelerator-based light sources, require synchronization and time distribution over distances of several tens of kilometers. Precisions of femtoseconds have been demonstrated, but the systems used to reach such specifications are costly and difficult to integrate in a particle accelerator environment. Applications such as bunch-per-bunch...
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Christian Carli (European Organization for Nuclear Research)20/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
Precise beam energy calibration is a basic requirement for FCC-ee operation at the Z and WW energies. The present baseline foresees to polarize low intensity bunches in the collider using asymmetric wigglers during about one hour prior to ramping up the intensity of bunches brought into collision for physics. Generation of polarized bunches at low energy in a dedicated ring is proposed as...
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Michele Bozzolan (European Organization for Nuclear Research)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The bunch-by-bunch and turn-by-turn beam trajectory measurement system of the CERN PS accelerator has been in operation for several years. To ensure long-term reliability, the consolidation of the analogue acquisition chain is foreseen during the upcoming LS3 long shutdown including a new architecture with improved performance, which is currently under test in the PS accelerator for final...
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Dr Michele Corvino (SYES)20/05/2026, 16:00MC6.T27: Instrumentation: Low Level RFPoster Presentation
The SYES LLRF Systems of latest generation are Easy to Use, Efficient, Flexible and especially Affordable.
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They can be fully software customisable to customer needs, in Fully Wide Band (30-900MHz) applications. The units feature Precise Frequency, Amplitude and Phase Control in continuous wave (CW) or Pulsed applications with real-time monitoring of RF signals.
The units assure full... -
1577. A Novel Approach for Transverse Instability Detection in the CERN Proton Synchrotron (WEP6082)Amaury Beeckman (European Organization for Nuclear Research)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The CERN Proton Synchrotron faces increasingly demanding requirements from its user community, driven by the need for higher-intensity beams that push the machine to the limits of beam stability. Transverse instabilities, such as head-tail and transverse-mode-coupling instabilities, can arise at specific stages of the machine cycles, depending on the beam parameters. This work introduces a...
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Hangzhou Li (University of Science and Technology of China)20/05/2026, 16:00MC1.A04: Colliders: Circular Accelerators and Storage RingsPoster Presentation
The Super Tau-Charm Facility (STCF), a next-generation electron-positron collider, requires ultra-low emittance and high luminosity, demanding strong synchrotron radiation damping. Due to limited ring circumference, conventional damping from bending magnets is insufficient, necessitating numerous damping wigglers. However, conventional electromagnetic wigglers face peak field limitations. To...
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Patrick Schreiber (Karlsruhe Institute of Technology)20/05/2026, 16:00MC6.T04: Accelerator/Storage Ring Control SystemsPoster Presentation
Many measurements in accelerator physics require dedicated scans of parameters, such as the main frequency of the RF system for chromaticity measurements or a variation of quadrupole strength for beta function measurements, etc. Such measurements cannot be performed by simply reading an instrument, but require a certain measurement procedure. These measurements are typically implemented as...
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Tianlong He (University of Science and Technology of China)20/05/2026, 16:00MC5.D05: Coherent and Incoherent Instabilities Theory, Simulations, Code DevelopmentPoster Presentation
Modern fourth-generation storage ring light sources predominantly utilize digital I/Q-based proportional-integral (PI) feedback for their radio-frequency (rf) systems. This paper introduces a dedicated PI feedback model implemented in the STABLE tracking code to enable accurate longitudinal beam dynamics simulations. The model's key innovation lies in its treatment of the continuous...
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Giovanni Iadarola (European Organization for Nuclear Research)20/05/2026, 16:001MC5.D11: Code Developments and Simulation TechniquesPoster Presentation
Accurate and stable integration of charged-particle motion in complex magnetic fields is essential for beam-dynamics simulations in accelerators and beam lines.
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For the Xsuite simulation framework we have recently developed a spatially discretized Boris-like algorithm that advances particle coordinates using the longitudinal position as the independent variable.
The scheme retains the... -
Jun Tamura (Japan Atomic Energy Agency)20/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
The Japan Atomic Energy Agency (JAEA) is designing a 30-MW linear proton accelerator (linac) for the Accelerator-Driven Systems (ADS) to address the nuclear waste storage challenges. For Accelerator-Driven Systems (ADS) technology to be viable, it is necessary to minimize both the number of beam trips and their duration, thereby exceeding the performance of current linacs. JAEA is focused on...
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Maria Paula Rey Barrera (Paul Scherrer Institute)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
A visible-light 2D imaging monitor was developed and commissioned in the Swiss Light Source (SLS) 2.0 booster ring to characterize transverse beam behavior during the energy ramp.
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Installed downstream of a bending magnet, it extracts visible synchrotron radiation via an in-vacuum gold-coated mirror and uses a CMOS camera with motorized optics and filters.
The setup accommodates the evolving... -
Vincent Schoefer (Brookhaven National Laboratory)20/05/2026, 16:00MC4.A30: Hadron accelerators: Polarized beamsPoster Presentation
Partial snakes are used at the Brookhaven AGS to avoid strong vertical spin resonances during acceleration of polarized proton beam from 2.5 to 23 GeV. An unfortunate side effect is that these snakes excite numerous weak resonances associated with the horizontal betatron motion. We present experimental demonstration and operational experience of the compensation of these resonances during...
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Andrei Seryi (Old Dominion University)20/05/2026, 16:00MC1.A19: Lepton-Hadron CollidersInvited poster
The Electron-Ion Collider (EIC) Mission Need requires √s = 20–100 GeV (upgradable to 140 GeV) and luminosity 10³³–10³⁴ cm⁻² s⁻¹. The current ring-ring baseline achieves the full scope, including ~10³⁴ cm⁻² s⁻¹ across all energies. However, when the design is re-optimized for the lower boundary — accepting ~10³³ cm⁻² s⁻¹ and prioritizing cost — an alternative configuration emerges as more...
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Frank Herfurth (GSI Helmholtz Centre for Heavy Ion Research)20/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
The new accelerator complex, FAIR (the International Facility for Antiproton and Ion Research), will soon be commissioned to deliver ion beams using its injector and the GSI accelerator complex. In order to extend the operation of the GSI to include the FAIR and due to some ageing components, a new control system has been implemented.
The time- and resource-efficient setup of complex ion...
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Srinivas Krishnagopal (Fermi National Accelerator Laboratory)20/05/2026, 16:001MC4.A04: Hadron accelerators: Circular AcceleratorsPoster Presentation
The Proton Improvement Plan - II (PIP-II) injector linac is an 800 MeV superconducting H- linac that will replace the existing 400 MeV injector to the accelerator complex at Fermilab. The higher energy, intensity and repetition rate require various upgrades to the existing accelerator complex consisting of the Booster, the Recycler Ring and the Main Injector, in order to be able to accept and...
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Elian Bouquerel (Institut Pluridisciplinaire Hubert Curien)20/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
The ESSnuSB project aims to generate an intense neutrino beam and the associated muon flux, using a 5 MW high-power proton driver, requiring precise and reliable transport of the accumulated beam to the target station. To achieve this, a dedicated transfer line guides the extracted protons from the accumulator toward the neutrino beam direction while meeting strict geometric constraints.
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The... -
Dan Abell (University of Maryland, College Park)20/05/2026, 16:00MC5.D11: Code Developments and Simulation TechniquesPoster Presentation
The design of accelerator lattices involves evaluating and optimizing Figures of Merit (FoMs) that characterize a beam’s properties. These properties—hence the FoMs—depend on the many parameters that describe a lattice, including the strengths, locations, and possible misalignments of focusing elements. Often what is required is the gradient of the FoM with respect to each of the parameters....
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Carlo Zannini (European Organization for Nuclear Research)20/05/2026, 16:00MC5.D04: Beam Coupling Impedance Theory, Simulations, Measurements, Code DevelopmentPoster Presentation
Accurate beam coupling impedance modeling is essential for predicting collective effects and ensuring stable high-intensity operation in the LHC and its High-Luminosity upgrade. Operational experience has shown that even small mechanical details can have a significant impact on the impedance of accelerator components, potentially leading to performance degradation or hardware failure. In...
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Laurent Deniau (European Organization for Nuclear Research)20/05/2026, 16:00MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsPoster Presentation
Advanced linear and non-linear optics studies require accurate and efficient tools for high-order beam dynamics computations. MAD-NG provides a unique framework combining linear and nonlinear optics modelling, high-order parametric differential map computation through precise automatic differentiation, and Lie-algebraic operations central to nonlinear normal form analysis, all within a unified...
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Marcel Coly (European Organization for Nuclear Research)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Over the past years, the beam quality delivered by the CERN Proton Synchrotron (PS) has significantly improved, driven by major upgrades to both the accelerator and its controls infrastructure. As a result, user requirements have become increasingly demanding, particularly for high-brightness beams for the LHC, but also for fixed-target beams. The PS, known for its versatility in supplying...
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Wojciech Soroka (S2Innovation Sp z o. o. [Ltd.])20/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
The key to successful AI-Chatbot implementation is integrating multiple data sources across the scientific facility. At ELI Beamlines, the system will aggregate heterogeneous operational data sources, including control system logs and archived telemetry, alarm system records, digital logbook entries, and other knowledge bases. This integrated repository forms the foundation for an AI chatbot...
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Roberto Fernandez Bautista (European Organization for Nuclear Research)20/05/2026, 16:00MC6.T17: Instrumentation: Alignment and SurveyPoster Presentation
The High Luminosity upgrade of the Large Hadron Collider (HL-LHC) at CERN requires exceptional alignment accuracy of accelerator components to reach the luminosity targets and to ensure reliable beam operation. This accuracy is achieved with the help of the Full Remote Alignment System (FRAS), which employs a capacitive Wire Positioning System (WPS) to monitor the position of magnets, RF...
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Frank Zimmermann (European Organization for Nuclear Research)20/05/2026, 16:00MC1.A10: Colliders: Damping RingsPoster Presentation
The new FCC-ee injector complex design, as outlined in the feasibility report, consists of an electron source, two separate linacs for electron and positron beams to accelerate beams up to 2.86 GeV, a positron production target, a damping ring at 2.86 GeV energy for emittance cooling, a bunch compressor, a high energy linac to accelerate the beam up to 20 GeV, and an energy compressor.
The...
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Dr Ye Zou (University of Science and Technology of China)20/05/2026, 16:00MC1.A04: Colliders: Circular Accelerators and Storage RingsPoster Presentation
The Super Tau-Charm Facility (STCF), proposed by the University of Science and Technology of China, is a next-generation electron-positron collider designed to achieve a luminosity exceeding 5×10^34 cm^-2s^-1, approximately two orders of magnitude greater than that of BEPCII. Large Piwinski angle with the crab waist collision scheme is applied. However, the extremely small βy* (<1 mm)...
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Juan Carlos Fernández Ortega (Instituto de Física Corpuscular)20/05/2026, 16:00MC6.T27: Instrumentation: Low Level RFPoster Presentation
A complete analog readout system designed to extract reference and position signals from a single cavity Beam Position Monitor (cBPM) has been developed for a proto type from CEA Saclay. The complete system underwent beam testing at the Accelerator Test Facility (ATF). The monitor operates with a dipole mode centered at 1.725 GHz, requiring translation to lower frequencies for digitization and...
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Ian Martin (Diamond Light Source)20/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
The close proximity of the magnets on the Diamond-II girders leads to significant crosstalk effects. This is of particular concern for the dipole component of the bending magnets, as the truncation of the fringe fields reduces the integrated strength and distorts the closed orbit. Tuning of the field strength and accurate alignment of the magnets is required to recover the target bend angles....
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Victor Smaluk (Brookhaven National Laboratory)20/05/2026, 16:00MC1.A17: Colliders: High Intensity AcceleratorsPoster Presentation
We have done analytical estimates of beam intensity limitations in the Beam Accumulator Ring (BAR), a part of the Electron-Ion Collider injector complex under development at Brookhaven National Laboratory. Analytical models of longitudinal and transverse collective eJects are developed using a broadband impedance model calibrated with the beam-based measurement results from NSLS VUV. The study...
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Silke Van der Schueren (European Organization for Nuclear Research)20/05/2026, 16:00MC5.D11: Code Developments and Simulation TechniquesPoster Presentation
Planar particle channelling describes the motion of high-
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energy particles trapped in the potential well formed by
crystal lattice planes, allowing their trajectories to be de-
flected in a controlled manner. Within the Molière approx-
imation, which incorporates atomic screening and thermal
vibrations, this motion is typically either approximated by
a harmonic potential or evaluated... -
Francis Osswald (Institut Pluridisciplinaire Hubert Curien)20/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
Automatic image reconstruction tools are essential in fields such as physics, astronomy, and biology. In particle accelerators like CERN’s LHC, they are particularly important for evaluating beam quality through beam distribution measurement as position, profile, and emittance. Traditional analysis tools no longer meet the accuracy and efficiency demands of future facilities. We developed a...
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Ivan Morozov (Elettra-Sincrotrone Trieste S.C.p.A.)20/05/2026, 16:00MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsPoster Presentation
Turn-by-turn (TbT) data are readily available in modern circular accelerators and are widely used to infer machine parameters in both simulations and experiments. In the latter case, TbT data record transverse beam-centroid positions from beam position monitors (BPMs) and therefore include measurement noise and decoherence. We construct high-dimensional time-delay embedding of TbT time series,...
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Martin Kay (Los Alamos National Laboratory)20/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
Traditional phase scans at LANSCE are useful for tuning longitudinal capture but provide only indirect information about the bunch distribution. This work extends a deep neural network-based reconstruction method to the first two modules of the side-coupled cavity linac. Simulated two-dimensional phase scans were generated with HPSim by varying the RF phases of Modules 5 and 6 and recording...
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Pedro Calvo (Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas)20/05/2026, 16:00MC5.D03: Calculations of EM fields Theory and Code DevelopmentsPoster Presentation
This work presents a comprehensive study of manufacturing and assembly errors in a 750 MHz Interdigital H-mode Drift Tube Linac (IH-DTL) cavity designed for a compact and efficient ion beam inyector. Operating at such a high RF frequency significantly reduces the cavity dimensions but it also increases the sensitivity to geometric imperfections, posing a substantial technological challenge for...
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Julian Gethmann (Karlsruhe Institute of Technology)20/05/2026, 16:00MC6.T22: Reliability, OperabilityPoster Presentation
For the cSTART project the Institute for Beam Physics and Technology (IBPT) at the Karlsruhe Institute of Technology (KIT) introduced with Snipe-IT a new system to manage all accelerator related components. As the new components arrive, one of the first step is entering them into the asset database, which creates a unique identifier. This identifier is then also used during the quality...
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Jaroslaw Szumega (European Organization for Nuclear Research)20/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
In accelerator facilities, the control and assessment of a high-quality beam delivery require capable monitoring systems, including both hardware and software components. In most accelerator beamlines, precise measurements and reliable beam delivery are critical factors in their operation. At the CERN IRRAD facility, the transverse beam profile carries the essential information about the beam...
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Bradley Wilson (ASTeC, STFC Daresbury Laboratory)20/05/2026, 16:00MC6.T33: Online Modelling and Software ToolsPoster Presentation
In this paper we present the design and deployment of the software tools used for the automated parallel conditioning of 7 RF cavities on CLARA (Compact Linear Accelerator for Research Applications). The software tools consist of 4 distributed tools with the following responsibilities: Control, Acquisition, Visualisation, and Communication. In combination, these tools enabled the...
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Amro Aljadaa (Synchrotron-Light for Experimental Science and Applications in the Middle East)20/05/2026, 16:00MC6.T33: Online Modelling and Software ToolsPoster Presentation
Managing large number of Input / Output Controllers (IOCs) and Graphical User Interfaces (GUIs) in a multi-network facility is challenging, since there are several resources of failures large scientific facilities may face in their life cycle, including hardware failures in servers and networks, operating system issues like high CPU and memory usage, and application issues such as crashes and...
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Joshua Gregory (Lancaster University)20/05/2026, 16:00MC6.T24: Instrumentation: Timing and SynchronizationPoster Presentation
The Advanced Wakefield Experiment (AWAKE) at CERN demands state-of-the-art timing and synchronisation performance. Upgrades due for completion 2029 require sub-50 fs laser synchronisation from its distributed laser systems to achieve experiment baselines. Accordingly, a time-of-flight stabilised all-optical timing distribution network in development with Lancaster University aims to establish...
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Lukas Felsberger (European Organization for Nuclear Research)20/05/2026, 16:00MC6.T22: Reliability, OperabilityPoster Presentation
Run 3 represents the final operational phase of the LHC before the transition to the High-Luminosity (HL) LHC era. It covers the operational years 2022 to 2026 and ends just before Long Shutdown 3, starting in July 2026. This period is defined by the successful restart of beam operation following the maintenance and upgrades during Long Shutdown 2, the establishment of a stable operational...
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Johan Lundquist (Lund University)20/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
Reaching design performance in modern particle accelerators is a challenge involving many tasks which are time-consuming and difficult to perform. It is always an advantage to be able to simplify high-level operational tasks and measurements through the assistance of optimization techniques. In this work we applied Bayesian optimization via the XOpt framework with the aim to simplify and...
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Masahito Yoshii (High Energy Accelerator Research Organization)20/05/2026, 16:00MC4.A04: Hadron accelerators: Circular AcceleratorsPoster Presentation
In a rapid cycling synchrotron, sinusoidal excitation using an LC resonant circuit is commonly used as the current pattern for the main magnets. In this case, dB/dt reaches its maximum value at the 1/4 cycle period, and the time variation of dB/dt is important in determining the required RF acceleration voltage. Multi-harmonic excitation can be considered as a method to reduce the time...
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Dr Taichi Sakai (High Energy Accelerator Research Organization)20/05/2026, 16:00MC1.A08: Colliders: Linear AcceleratorsPoster Presentation
KEK-LINAC is an electron/positron linear accelerator used as the injector for the synchrotron radiation facilities (PF ring and PF-AR) and SuperKEKB. The stable operation of experiments at these facilities requires reliable beam supply from the LINAC. We have newly introduced an analytical method based on gradient boosting decision tree (GBDT) to further enhance our beam adjustment...
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Aaron Heinz (Goethe University Frankfurt), Areso Sherjan (GSI Helmholtz Centre for Heavy Ion Research)20/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
At GSI Darmstadt, the ESR storage ring is a fundamental device for atomic physics experiments. The operation of this storage ring requires precise control of the machine optics. However, the ESR has suffered from imprecise optics control, which yielded a mismatch of about $\sim0.1$ in the tune predicted by the MAD-X model.
In this work, we present a beam-based method to reduce these...
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Simona Bettoni (Paul Scherrer Institute)20/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
The FCC-ee injector complex is designed to deliver tunable, high-charge electron and positron bunches for injection into the collider over a center-of-mass energy range of 90--365~GeV. A key element is the high-energy (HE) linac, which accelerates the beam from about 3 to 20~GeV before injection into the booster. In this work, we present beam-dynamics studies aimed at minimizing emittance...
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Ryo Ogawara (RIKEN Nishina Center)20/05/2026, 16:00MC4.A24: Hadron accelerators: Accelerators and Storage Rings, OtherPoster Presentation
Research on short-lived unstable nuclei (radioactive isotopes, RIs) has progressed rapidly in recent years, driven by advances in accelerator technology and in the production and separation of RIs. Consequently, nuclear reaction experiments using rare RIs far from the valley of stability have attracted increasing attention. To improve the measurement accuracy of nuclear reactions involving...
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Dr Armen Grigoryan (Center for the Advancement of Natural Discoveries using Light Emission)20/05/2026, 16:00MC5.D09: Emittance manipulation, Bunch Compression and CoolingPoster Presentation
High-brightness and low-emittance beams generated in RF-gun–based accelerators are essential for a number of applications, such as free-electron lasers (FELs), ultrafast electron Diffraction facilities and THz radiation sources. In these accelerators, the final beam characteristics are determined both, by the properties of the electron gun and by the influence of the electromagnetic system...
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Collette Pakuza (European Organization for Nuclear Research)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The AWAKE experiment at CERN is a proof-of-principle facility that uses proton-driven plasma wakefields to accelerate externally injected electrons. Since initial operations in 2016, multiple experimental phases have been completed, with the most recent being Run 2b. Beam diagnostics played a crucial role during this phase, enabling reliable operation and characterisation of the particle...
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Jan Uythoven (European Organization for Nuclear Research)20/05/2026, 16:00MC1.A01: Hadron CollidersPoster Presentation
The High-Luminosity Large Hadron Collider (HL-LHC) will increase the nominal LHC integrated luminosity by a factor of 10 and operate with proton beams storing up to 700 MJ of energy per beam. In this upgraded machine, a new quench protection system, the Coupling-Loss Induced Quench (CLIQ) system, will be installed in combination with conventional quench heaters to protect the Nb3Sn inner...
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Jiacheng Wu (Deutsches Elektronen-Synchrotron DESY)20/05/2026, 16:00MC6.T18: Instrumentation: Radiation Monitoring and SafetyPoster Presentation
The European XFEL is a free-electron laser facility based on a superconducting linac with high bunch repetition rates of up to 4.5 MHz. An L-shaped corrugated structure has been installed upstream of the SASE1 undulator for fresh-slice operation and ultrashort-pulse generation. As the electron beam passes through the structure, strong longitudinal and transverse wakefields are excited which...
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Keyvan Tabaei (University of Isfahan)20/05/2026, 16:00MC5.D04: Beam Coupling Impedance Theory, Simulations, Measurements, Code DevelopmentPoster Presentation
The 30 MeV Karaj-C30 cyclotron, developed for medical and industrial radioisotope production, accelerates H⁻ ions to 15–30 MeV and D⁻ ions below 15 MeV using a carbon stripper foil for extraction. The system features a filament-based negative hydrogen multicusp ion source providing 1–2 mA, an injection line with optical elements, a two-sector electromagnet, and an RF resonator. Beam profiles...
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Dr Mohammed Ben Abdillah (Université Paris-Saclay, CNRS/IN2P3, IJCLab)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
PERLE is an Energy-Recovery Linac (ERL) to be constructed at IJCLab in Orsay. It will be the First ever multi-turn ERL with superconducting RF (SRF) acceleration, and the first ERL with the ambition to reach 5MW beam operation. Diagnostics are a key element for PERLE operation and among diagnostics, Beam position monitors (BPMs) cover a wide range of applications. We report BPM goals for a...
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Massimo Giovannozzi (European Organization for Nuclear Research)20/05/2026, 16:00MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsPoster Presentation
An RF phase modulation whose frequency is set close to a resonant condition with the synchrotron tune can be used to form resonance islands in the longitudinal phase space. A slow variation of the modulation amplitude and frequency can be performed to trap particles inside the island structure and to realise adiabatic transport, according to adiabatic theory for Hamiltonian systems. However,...
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Dong-O Jeon (Institute for Basic Science)20/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
Various studies have been conducted to tune the linac. The RF set-points of the superconducting linac is determined with phase scan technique with BPMs. With the BPM calibration, the beam energy is quite accurately determined. We check the beam energy from phase scan with dipole scan method. Transverse beam matching between sections of the linac has been tried successfully. Tomography...
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Vadim Gubaidulin (Synchrotron soleil)20/05/2026, 16:00MC5.D06: Coherent and Incoherent Instabilities Measurements and CountermeasuresPoster Presentation
In the context of the ongoing SOLEIL II upgrade, a measurement campaign was conducted to characterise and understand the behaviour of single- and coupled-bunch instabilities, and the performance of the transverse bunch-by-bunch feedback system at the present SOLEIL storage ring. This paper presents the key results of beam current thresholds measurements; growth-damp measurements with resistive...
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Patrick Schreiber (Karlsruhe Institute of Technology)20/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
One of the objectives of the cSTART project (compact STorage ring for Accelerator Research and Technology) is the injection and storage of ultra‑short electron bunches into a storage ring. With a storage time of 100 ms, resulting from the 10 Hz repetition frequency, and a beam energy between 40 and 90 MeV, the beam will not reach equilibrium conditions. KIT plans injection from two sources, a...
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Vladimir Litvinenko (Stony Brook University)20/05/2026, 16:00MC1.A03: Linear Lepton CollidersPoster Presentation
Recycling collided particles and their energy opens path to very high luminosity O(E36) e+e- linear colliders aka ReLiC [1]. The main challenges of such concept are in computing low energy tail caused by beamstrahlung and limiting emittance blow-out during collisions. Beamstrahlung control requires colliding super-flat beams with size ratio exceeding 1,000. We present detailed simulations of...
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Divya Divya (TU Wien)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Accurate measurement of shot-to-shot fluctuations in electron beams produced by laser-plasma accelerators (LPAs) is important for their development. Reliable monitoring of beam reproducibility and stability is crucial for accelerator operation. However, the high peak current and electromagnetic pulse environment make beam diagnostics challenging. In this work, preliminary results of bunch...
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Yan Wang (Huazhong University of Science and Technology)20/05/2026, 16:00MC1.T12: Colliders: Beam Injection/Extraction and TransportPoster Presentation
The Super Tau-Charm Facility (STCF) is a tau–charm electron-positron collider currently under design, with a projected single-bunch charge of up to 8 nC and an average beam current as high as 2 A. On-axis swapping injection is one of the feasible injection schemes; however, the high-current beam can induce severe heating effects on the electrodes of the stripline kicker. Based on theoretical...
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Alexandre Lasheen (European Organization for Nuclear Research)20/05/2026, 16:00MC5.D09: Emittance manipulation, Bunch Compression and CoolingPoster Presentation
To produce beam for the nTOF and East Area experimental facilities at CERN, the Proton Synchrotron (PS) simultaneously accelerates two bunches with very different intensities. This combined acceleration cycle gains time and flexibility for beam sharing across the accelerator complex. However, to fulfil the demanding beam requests for future facilities like the Search for Hidden Particles...
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Mrs Milena Yazichyan (Center for the Advancement of Natural Discoveries using Light Emission)20/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
AREAL linear accelerator, presently operating at CANDLE SRI generates 5-MeV ultrashort electron beams for a wide range of applications. The planned upgrade program aims to increase the beam energy up to 50 MeV in order to expand experimental capabilities and enable the generation of THz radiation. For this purpose, two 1.6-m-long accelerating structures are foreseen to be installed. To ensure...
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Vaibhavi Gawas (European Organization for Nuclear Research)20/05/2026, 16:00MC5.D10: Beam-Beam Effects Theory, Simulations, Measurements, Code DevelopmentsPoster Presentation
Beamstrahlung and secondary pair production are relevant sources of backgrounds but can also be exploited as potential tuning signals at the FCC-ee. They depend on possible interaction point (IP) optics errors and on general beam–beam conditions. Using GUINEA-PIG, we simulate beamstrahlung photons, and pair production through Breit–Wheeler, Bethe–Heitler, and Landau–Lifshitz processes and...
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Giovanni Iadarola (European Organization for Nuclear Research), Jorg Wenninger (European Organization for Nuclear Research)20/05/2026, 16:00MC5.A30: Beam Dynamics: Polarized beamsPoster Presentation
The 26.7 km long Large Electron Positron collider (LEP) was operated at CERN between 1989 and 2000. The most precise measurements of the Z boson mass and width were made possible thanks to high precision energy calibration of the LEP beams with resonant depolarization. Transversely polarized beams had to be established at LEP to achieve this goal, providing a rich legacy of data on polarized...
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Lennert De Keukeleere (Belgian Nuclear Research Centre)20/05/2026, 16:00MC6.T33: Online Modelling and Software ToolsPoster Presentation
At the Nuclear Research Center SCK CEN in Belgium, the first phase of the MYRRHA project (an accelerator driven system) is under construction. Included in MYRRHA Phase 1 are a 17 MeV normal conducting injector linac (RFQ + CH cavities) and a super conducting linac (60 single spoke cavities), providing a CW proton beam of 4 mA at 100 MeV.
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In this contribution, beam dynamics simulations of the... -
Dr Yuri Kubyshin (Universitat Politècnica de Catalunya)20/05/2026, 16:00MC5.D11: Code Developments and Simulation TechniquesPoster Presentation
This work benchmarks the PENELOPE/PENH (2021 version) and PHITS Monte Carlo codes for calculating beam quality correction factors (kQ) in therapeutic proton beams. The latest PENH extension to PENELOPE enables proton transport simulation, including an approximate description of nuclear reactions and neutron production. PHITS, conversely, is an established multi-particle transport code covering...
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Haroon Rafique (ISIS Neutron and Muon Source)20/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
ISIS operates an 800 MeV Rapid Cycling Synchrotron (RCS) delivering protons to neutron and muon targets with a beam power of 0.2 MW. A reliable lattice description is essential for advancing low-loss, high-intensity operation and supports emerging model-driven optimisation enabled by forthcoming Python-accessible controls. A new consolidated low-intensity linear optics model of the ISIS RCS,...
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Dr Yuri Kubyshin (Universitat Politècnica de Catalunya)20/05/2026, 16:00MC5.D11: Code Developments and Simulation TechniquesPoster Presentation
This study provides a benchmark of the PENELOPE/PENH (2021 version) Monte Carlo code for proton transport using reference results from the established PHITS code. The comparison focuses on absorbed-dose distributions generated by a finite-spot proton pencil beam. Integrated depth-dose curves were simulated for monoenergetic beams ranging from $100 \text{ to } 250 \text{ MeV}$ incident on a...
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Jesus Avila Pulido (Paul Scherrer Institute)20/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
The Swiss Light Source upgrade, SLS 2.0, is a fourth generation storage ring based on a seven-bend achromat design and is currently under commissioning. Precise knowledge and control of the linear optics are essential for optimal machine performance. This contribution presents measurements of the beta function using the quadrupole variation method at 264 locations around the ring. The...
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Takashi Mori (High Energy Accelerator Research Organization)20/05/2026, 16:00MC1.A03: Linear Lepton CollidersPoster Presentation
Because of the strong beam-beam force at the interaction points in the FCC-$ee$ collider, the charge balance of two beams opposing each other is vitally important. The injection of a high charge beam derives the imbalance of two beams, which causes the instability of the beams. To avoid this imbalance, the bootstrapping injection has been adopted for the FCC-$ee$ collider. The conditioning of...
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Murilo Barbosa Alves (MAX IV Laboratory)20/05/2026, 16:00MC5.D05: Coherent and Incoherent Instabilities Theory, Simulations, Code DevelopmentInvited poster
MAX IV is engaged in the design of a major upgrade to its 3 GeV ring, called MAX 4U. The upgrade aims at an improvement in light source performance to maintain MAXIV’s competitive edge beyond the end of this decade. In this contribution, we report on the studies of the performance of double- and triple-rf systems for bunch lengthening with MAX4U parameters. The stationary bunch profiles and...
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Victor Smaluk (Brookhaven National Laboratory)20/05/2026, 16:00MC1.T12: Colliders: Beam Injection/Extraction and TransportPoster Presentation
High single-bunch charge in the EIC Beam Accumulator Ring (BAR) leads to strong impedance-induced bunch lengthening that exceeds the requirements for injection into the Rapid Cycling Synchrotron. Using geometric and resistive-wall impedance model and multi-particle tracking with ELEGANT, we study RF phase-jump schemes that rotate the longitudinal phase space to transiently shorten the bunch...
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Javier Bañuelos Sánchez (ALBA Synchrotron (Spain))20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The ALBA synchrotron is preparing its upgrade to ALBA II, a fourth-generation storage ring that will require improved bunch by bunch beam diagnostics in order to fully characterize the beam. To meet these requirements and based on the analysis developed using the HOTCAP code [1], we are integrating an oscilloscope-based analysis tool that processes BPM signals to extract bunch-by-bunch charge,...
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Arthur Spierer (European Organization for Nuclear Research)20/05/2026, 16:00MC6.T05: Beam Feedback SystemsPoster Presentation
As part of the High-Luminosity LHC (HL-LHC) project, the Super Proton Synchrotron (SPS) Low-Level RF (LLRF) system has undergone a major upgrade during the machine shutdown in 2019-20 to meet the performance requirements of the LHC ion program and high-intensity proton beams. A key development in this context is the implementation of a bunch-by-bunch measurement chain, designed to provide...
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Laura Torino (ALBA Synchrotron (Spain))20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Non-Redundant Aperture Interferometry (NRAI) is a beam characterization technique developed at ALBA in collaboration with radio-astronomy institutes. It enables the single-acquisition measurement of the full 2D transverse profile of the electron beam using visible synchrotron radiation. To better understand the technique limitations and performance, we performed extensive SRW simulations and...
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Simon Hirlaender (University of Salzburg)20/05/2026, 16:00MC6.T04: Accelerator/Storage Ring Control SystemsPoster Presentation
Robust accelerator control increasingly relies on data-driven optimisation, yet balancing adaptability with safety remains challenging. Simulation-driven physics-informed reinforcement learning (RL) relies on soft constraints without firm safety guarantees, and classical matrix inversion becomes suboptimal under noise and hard actuator limits. Using the AWAKE electron beam steering task at...
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Mr Alexandre Leduc (Grand Accélérateur National d'Ions Lourds), Dr Angie Orduz (Grand Accélérateur Nat. d'Ions Lourds)20/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
The SPIRAL2 LINAC at GANIL (Caen, France) was commissioned in 2019 and became operational for users in 2022. During these years, there have been various issues with amplifiers and cavities, which have caused the LINAC to operate without a cavity. Within the framework of the ReFilL project, several cases with one cavity out of order were simulated with TraceWin. Three cases were tested...
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Carlo Zannini (European Organization for Nuclear Research)20/05/2026, 16:00MC5.D04: Beam Coupling Impedance Theory, Simulations, Measurements, Code DevelopmentPoster Presentation
A comprehensive impedance model is required to ensure beam stability and optimize performance in the FCC-ee main rings. The model integrates contributions from a wide range of components, accounting for both resistive-wall and geometric effects. In this paper, we discuss the main challenges introduced by the peculiar FCC-ee parameter regime. A first difficulty arises from the combination of...
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Dr Vanessa Ling Jen Phung (Horia Hulubei National Institute for R and D in Physics and Nuclear Engineering, Extreme Light Infrastructure - Nuclear Physics)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Laser-plasma acceleration (LPA) is a transformative approach in high-energy physics, promising applications from nuclear isomer production to medical treatment, astrophysics, and beyond. However, accurate, in-situ measurement of the accelerated electron beam charge remains fundamentally challenged by the intense operational environment. At ELI-NP, the Turbo-Integrating Current Transformer...
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Michael Holz (MAX IV Laboratory)20/05/2026, 16:00MC6.T22: Reliability, OperabilityPoster Presentation
Four Libera Beam Loss Monitors (BLMs) were installed downstream of in-vacuum insertion devices at MAX IV 3 GeV storage ring. The monitors were operated in counting mode, with the loss-detection threshold defined from measurements taken with no stored beam. The BLMs were configured to provide stable, high-dynamic-range loss detection.
A series of controlled studies was performed to compare...
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Roberta Provvedi (Paul Scherrer Institute)20/05/2026, 16:00MC5.D06: Coherent and Incoherent Instabilities Measurements and CountermeasuresPoster Presentation
Longitudinal electron beam quality is key at X-ray free-electron lasers (FELs), where electron beams with small slice energy spread and a well-preserved current profile are required to ensure optimal, stable performance. Collective effects such as microbunching instability (MBI) and intrabeam scattering (IBS) can significantly degrade the longitudinal phase-space of the electron beam during...
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Bamunuvita Gamage (Thomas Jefferson National Accelerator Facility), Dr Peter Williams (Cockcroft Institute)20/05/2026, 16:00MC1.A03: Linear Lepton CollidersPoster Presentation
The GHOST collider final focus system is a pure quadrupole-drift beamline targeting $\beta^* = 2$ mm at four serial interaction points, with peak $\beta$-functions reaching ${\sim}65$ km in the final triplet. Beam tracking simulations reveal that a nominal bunch develops a pronounced C-shape in longitudinal phase space at IP1, where $\sigma_z$ grows from $0.15$ mm to ${\sim}2.3$ mm—a factor of...
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Joshua Gray (European Organization for Nuclear Research)20/05/2026, 16:00MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsPoster Presentation
Turn-by-turn (TBT) BPM data in the LHC is often affected by noise, limiting the extraction of resonant driving terms (RDTs) and reducing the precision of nonlinear optics studies. We developed a denoising autoencoder trained on simulated tracking data to reconstruct clean transverse oscillations and suppress noise directly in the time domain. The method produces cleaner frequency spectra and...
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Leonie Bauer (Goethe University Frankfurt)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Raspberry Pi cameras (single board CMOS cameras) have already been successfully implemented for ion beam characterization at IAP Frankfurt and are now also being used to investigate multipacting during cavity conditioning. Multipacting appears caused by resonant secondary electron emission.
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For the standalone rf conditioning of the FRANZ (Frankfurt Neutron Source) RFQ (Radio-Frequency... -
Rahul Singh (GSI Helmholtz Centre for Heavy Ion Research)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Pulse pile-up limits the count rate, timing precision, and energy resolution of radiation detection systems in accelerator beam instrumentation and downstream experiments. We present the project status of a machine-learning based pile-up recovery system designed for real-time particle counting and time of arrival determination at pulse rates exceeding $10^7$~particles/s. The convolutional...
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Vladimir Litvinenko (Stony Brook University)20/05/2026, 16:00MC1.A11: Colliders: Beam CoolingPoster Presentation
Vladimir N Litvinenko for CeC team
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Coherent electron Cooling (CeC) has potential to provide strong cooling for high energy hadron beam. Coherent electron Cooling experiment at Relativistic Heavy Ion Collider (RHIC), started about 10 years ago, went through a number of significant modification and it will end by the end of January 2026 with the end of RHIC operations. In this presentation we... -
Ryotaro Muto (High Energy Accelerator Research Organization)20/05/2026, 16:00MC4.A04: Hadron accelerators: Circular AcceleratorsPoster Presentation
The J-PARC Main Ring (MR) has achieved a high extraction efficiency above 99.5% during 30 GeV slow extraction at the current beam power of 92 kW (8.1x10^13 ppp). However, at beam powers above 30 kW, we observed ring-wide beam loss due to transverse beam instability associated with vacuum pressure rise and electron cloud, believed to be triggered by longitudinal microwave structure in the beam....
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2085. Coherent Transverse Instabilities on the ISIS Proton Synchrotron at Injection Energy (WEP5115)David Posthuma de Boer (ISIS Neutron and Muon Source)20/05/2026, 16:00MC5.D06: Coherent and Incoherent Instabilities Measurements and CountermeasuresPoster Presentation
ISIS is the short-pulsed spallation neutron and muon source at the Rutherford Appleton Laboratory in the UK. Its rapid-cycling synchrotron accelerates up to 3e13 protons per pulse from 70 to 800 MeV at 50 Hz, delivering them to fixed targets for neutron and muon production. As a beam-loss limited facility, increasing operational intensity necessitates the reduction of beam losses. Although...
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Dmitrii Rabusov (Diamond Light Source)20/05/2026, 16:00MC5.D04: Beam Coupling Impedance Theory, Simulations, Measurements, Code DevelopmentPoster Presentation
Impedance and collective effects are significant concerns for the design of modern accelerators. During development of the Diamond-II storage ring, effort was initially focussed on design for the arcs containing the majority of magnets, and geometric impedance was focussed on single bunch effects. We now present updates to the Diamond-II impedance database and the impact on collective effects...
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Jianliang Chen (Chinese Academy of Sciences)20/05/2026, 16:00MC4.A17: Hadron accelerators: High Intensity AcceleratorsPoster Presentation
Based on the beam commissioning of CSNS-I RCS, the current tune above half-integer exhibits extremely small parameter margins and severe instabilities. Therefore, to further increase beam power in Phase II, significant optimization of the tune is required.Through extensive simulations, we identified that the tunes below half-integer (near 4.3/5.3) show no instabilities, which is crucial...
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Haisheng Xu (Institute of High Energy Physics)20/05/2026, 16:00MC1.A04: Colliders: Circular Accelerators and Storage RingsPoster Presentation
The upgrade of Beijing Electron and Positron Collider-II has begun since the shutdown of BEPCII on July 1st in 2024. The hardware replacement and upgrade is expected to finish by the end of the year 2024, and the machine commissioning of BEPCII upgrade project will start at the beginning of the year 2025. In this paper, we will show the commissioning results of the BEPCII uprade project.
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Vsevolod Kamerdzhiev (GSI Helmholtz Centre for Heavy Ion Research)20/05/2026, 16:00MC6.T04: Accelerator/Storage Ring Control SystemsPoster Presentation
The FAIR Control Centre (FCC) has been purpose-built on the GSI campus to meet the complex operational demands of the FAIR/GSI large scale accelerator facility. It hosts the Main Control Room (MCR), seminar and meeting rooms of various sizes, offices, and dedicated technical rooms.
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The 640 m² MCR is an open, collaborative workspace for accelerator experts, experiment teams, and technical... -
Giovanni Campri (Elettra-Sincrotrone Trieste S.C.p.A.)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The Electro-Optical Sampling (EOS) system uses the electro-optic effect to map the transient field of the beam onto a probe laser pulse, enabling direct reconstruction of the temporal current distribution.
Temporal profiles acquired with the EOS were compared with independent measurements from the RF deflector, used as the reference diagnostic. The two techniques show good agreement in...
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Aleksandr Romanov (Fermi National Accelerator Laboratory)20/05/2026, 16:00MC4.A17: Hadron accelerators: High Intensity AcceleratorsInvited poster
The Proton Injector for the IOTA storage ring (IPI) has been successfully constructed and commissioned at the Fermilab Accelerator Science and Technology (FAST) facility. It has demonstrated the capability to produce proton pulses of up to 14 mA at 2.5 MeV. Operating alongside with the existing electron injector, IPI enables expanded beam physics research and supports the development of novel...
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Toby Overton (Science and Technology Facilities Council)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
A passive energy dechirper has been installed on CLARA, a 250 MeV electron beam user facility at Daresbury Laboratory. The device, comprising two orthogonal sets of planar dielectric-lined waveguides, is designed to manipulate the longitudinal phase space of the electron bunch, reducing energy spread and thereby delivering higher quality beams for user experiments. We present preliminary...
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Kunihiro Kojima (Japan Atomic Energy Agency)20/05/2026, 16:00MC4.A04: Hadron accelerators: Circular AcceleratorsPoster Presentation
In the J-PARC 3-GeV rapid cycling synchrotron, second-order random resonances are excited by shifting the operating point to a higher tune side. To mitigate resonance-induced beam loss and further enhance tunability of the operating point, we studied the compensation of second-order resonances. By controlling the timing when the beam approaches resonance through adjusting the momentum offset...
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Axel Bernhard (Karlsruhe Institute of Technology)20/05/2026, 16:00MC5.D03: Calculations of EM fields Theory and Code DevelopmentsPoster Presentation
The linac-based test accelerator FLUTE contains a bunch compressor to create few-fs scale bunches that generate coherent radiation in the THz regime. The form and spectrum of the THz pulse strongly depend on the evolution of the bunch along the bunch compressor, and hence on the paths of the particles. From a given path of a charged particle, one can compute the emitted radiation by means of...
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David Ondreka (GSI Helmholtz Centre for Heavy Ion Research), Oleksiy Dolinskyy (GSI Helmholtz Centre for Heavy Ion Research)20/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
Within the FAIR project, SIS18 is planned to be used as an injector and booster to increase the intensity of ion beams. To achieve higher intensities, a two-plane multi-turn injection scheme for SIS18 is being developed at GSI. The new injection system will allow a substantial increase in the number of accumulated turns with high efficiency, significantly reducing beam losses at the...
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Mingxuan Chang (Institute of Modern Physics, Chinese Academy of Sciences)20/05/2026, 16:00MC1.A10: Colliders: Damping RingsPoster Presentation
The Super Tau-Charm Facility (STCF) is a new generation tau-charm factory designed to collect an enormous and unique dataset in the tau-charm energy region. In order to supply high-quality electron and positron beams to the collider, the STCF injector employs a compatible injector scheme that supports both off-axis and swap-out injection modes. This paper introduces the conceptual design of a...
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Xiaoxia Huang (Shanghai Synchrotron Radiation Facility)20/05/2026, 16:00MC4.T01: Hadron accelerators: Proton and Ion SourcesPoster Presentation
Proton therapy has attracted increasing attention because of its favorable dose distribution enabled by its Bragg-peak behavior. Motivated by the proton therapy facility project at Shanghai Synchrotron Radiation Facility (SSRF), a 2.45 GHz ECR ion source has been designed and fabricated. This paper presents the conceptual design of the prototype, together with simulation results of the...
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Yusen Guo (Shanghai Synchrotron Radiation Facility)20/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
A new 425 MHz injector has been designed for proton and helium therapy facility. The LINAC consisted of a 3.0 m length RFQ and a 2.8 m length IH-DTL, which was designed to accelerate H2+ and He2+ beams to 8 MeV/u. The beam dynamics of the linac were designed based on comprehensive 3D electromagnetic field simulations, followed by particle tracking to optimize beam quality and transmission...
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Javier Martínez Samblas (European Organization for Nuclear Research)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
We have developed a new automated system to continuously monitor the health and performance of the LHC Beam Position Monitors (BPMs) at CERN. We preprocess turn-by-turn and bunch-by-bunch data through denoising and normalization before analyzing it using a combination of basic quality tests with rule-based checks and anomaly detection algorithms. All real-time acquisitions are processed on a...
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Thomas Sieber (GSI Helmholtz Centre for Heavy Ion Research)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Cryogenic Current Comparators (CCC) are superconducting devices for beam current monitoring, based on azimuthal magnetic field (fT range) measurement with ultrasensitive SQUID magnetometers. They are able to provide a calibrated non-destructive measurement of beam current with a resolution of 10 nA or better, independent from ion species and without tedious calibrations procedure.
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We have... -
Jesus Avila Pulido (Paul Scherrer Institute, École Polytechnique Fédérale de Lausanne)20/05/2026, 16:00MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsPoster Presentation
The Swiss Light Source upgrade, SLS 2.0, is a next-generation storage ring featuring an ultra-low-emittance lattice based on a seven-bend achromat design. Achieving such low emittance requires strong focusing, which in turn generates large negative chromaticities. These are corrected using powerful sextupole magnets, introducing nonlinear effects in the beam dynamics. In particular,...
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Ruben Heine (Technische Universität Berlin)20/05/2026, 16:00MC5.D05: Coherent and Incoherent Instabilities Theory, Simulations, Code DevelopmentPoster Presentation
Coupled-bunch instabilities restrict the beam intensity in many synchrotrons. These limitations can be mitigated by adding a higher-harmonic radiofrequency (RF) system, which modifies the potential well. Of particular interest is the bunch lengthening mode (BLM), in which the higher-harmonic voltage produces a defocusing effect at the bunch centre. By decreasing the peak line density,...
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Sergey Kurennoy (Los Alamos National Laboratory)20/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
The Los Alamos Neutron Science Center (LANSCE) accelerator complex delivers both protons and negative hydrogen ions with various beam time patterns simultaneously to multiple users. An upgrade of its front end to a modern, RFQ-based version – a part of the LANSCE Accelerator Modernization Project (LAMP) – is now in the conceptual design stage. The LAMP will need fast beam choppers both in the...
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Massimo Giovannozzi (European Organization for Nuclear Research)20/05/2026, 16:00MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsPoster Presentation
Precise optics control around the main interaction regions of the HL-LHC is essential to reach the target values of $\beta^*$ and the collider's nominal performance, while maintaining sufficient beam aperture and satisfying machine protection constraints. The field quality of the high-luminosity insertion-region magnets is critical for the accelerator performance, possibly impacting the...
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Max Joseph Kellermeier (Deutsches Elektronen-Synchrotron DESY)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Advanced accelerating techniques are evolving rapidly, enabling high energetic electron beams with significantly decreasing footprint. While the accelerating structures shrink impressively, longitudinal diagnostic components with femtosecond resolution like transverse deflecting structures still demand a significant amount of space and complex infrastructure, are costly and require precise...
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Sophia Morton (SLAC National Accelerator Laboratory)20/05/2026, 16:00MC1.A08: Colliders: Linear AcceleratorsPoster Presentation
For next generation particle collider designs, such as the Cool Copper Collider, small beam sizes, short bunch spacing, and beam stability are required to reach the luminosities desired to search for new physics. One challenge to overcome is damping the excitation of higher order modes in accelerating cavities. These modes are excited by wakefields induced by the beam, and must be removed...
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Adrian Menor de Onate (European Organization for Nuclear Research)20/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
To minimize beam intensity loss during a cycle in the CERN Super Proton Synchrotron (SPS), several machine parameters must be adjusted as functions of cycle time, spanning injection, injection plateau, acceleration, and extraction plateau. Today, these functions are typically tuned manually – a cumbersome procedure that can require hours of operator effort. This paper presents the progress...
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Guimei Wang (Brookhaven National Laboratory)20/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
There are numerous experimental techniques to quantify errors in a particle accelerator so that they can be corrected to improve the performance of the accelerator. However, these techniques are often limited in scope, for example, identifying only the errors in quadrupole strengths, sextupole strengths, or the centers of these magnets. In this paper, we propose a data-driven method that can...
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Joshua Gray (European Organization for Nuclear Research)20/05/2026, 16:00MC5.D11: Code Developments and Simulation TechniquesPoster Presentation
Deep Lie Map Networks (DLMN) were introduced in earlier work as an optimisation framework that adjusts lattice parameters by fitting simulated beam trajectories to measured BPM data. In this contribution, we present a new implementation of DLMN based on the single-pass forward differentiation capability of MAD-NG, allowing exact derivatives of the particle coordinates with respect to lattice...
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Jacqueline Keintzel (European Organization for Nuclear Research)20/05/2026, 16:00MC1.A02: Lepton Circular CollidersInvited poster
The Future Circular electron-positron Collider (FCC-ee), with a circumference of approximately 91 km, is being rapidly developed by CERN and its collaborators. Two collider-ring optics proposals have been developed in parallel over recent years. Each proposal features its own strengths and challenges.
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The Global Hybrid Correction optics (GHC) came first with a ring-distributed correction of... -
Prateek Rao (University of Wisconsin–Madison)20/05/2026, 16:00MC1.A09: Muon Accelerators, Neutrino Factories, Muon CollidersPoster Presentation
This study investigates magnetic horn focusing as an alternative to superconducting solenoids for the Muon Collider Demonstrator. We explored a double horn structure as an R&D exercise for a possible muon-collider frontend, tailored to capture pions in the 100-400 MeV/c momentum range. An XGBoost-based optimization pipeline was applied to refine geometric and current parameters to maximize...
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Oleksiy Dolinskyy (GSI Helmholtz Centre for Heavy Ion Research)20/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
Two-plane multiturn injection is planned for SIS18 to enable the delivery of high-intensity heavy-ion beams, which will subsequently be accelerated and extracted toward SIS100 at a repetition rate of 2.7 Hz. To accommodate this new injection scenario, the existing SIS18 injection line must be redesigned to allow simultaneous injection into both the horizontal and vertical planes of the...
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Juan Fernández (Safran Electronics & Defense Spain S.L.)20/05/2026, 16:00MC6.T27: Instrumentation: Low Level RFPoster Presentation
This work presents the hardware design and performance evaluation of a new Low-Level Radio Frequency (LLRF) system developed for the ALBA synchrotron, operating at the third harmonic frequency of 1.5 GHz. The system is implemented on a MicroTCA (uTCA) platform and is composed of a Rear Transition Module (RTM) that performs the analog front-end processing and down-conversion to an intermediate...
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Daniel Marx (Brookhaven National Laboratory)20/05/2026, 16:00MC1.A04: Colliders: Circular Accelerators and Storage RingsPoster Presentation
The Electron-Ion Collider (EIC), which is currently being designed for construction at Brookhaven National Laboratory, will collide polarized electron beams (5-18 GeV) with polarized hadron beams (41-275 GeV for protons) at luminosities up to $10^{34} \textrm{cm}^{-2} \textrm{s}^{-1}$ in a 3.8-kilometer ring. The EIC will be the only lepton-hadron collider since HERA at DESY and, in contrast...
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Delvon Alexander (Illinois Institute of Technology)20/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
A 1 GeV superconducting proton linac is being proposed as a driver for an accelerator driven system (ADS) for nuclear waste transmutation. In 2014, a compact design for an ADS driver linac based on state-of-the-art Niobium superconducting RF technology was developed at Argonne National Lab. Since then, a new and transformational SRF technology has emerged based on Nb3Sn material. The new ...
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Yixing Lu (Shanghai Synchrotron Radiation Facility)20/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
A 714 MHz proton linac was designed for medical applications. The linac aims for both sychrotrons and S-band linacs. Proton beams can be accelerated to 8 MeV with high transmission.
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Dr Tianjue Zhang (China Institute of Atomic Energy), wei fu (China Institute of Atomic Energy)20/05/2026, 16:00MC4.A13: Hadron accelerators: CyclotronsPoster Presentation
The growing demand for medical isotopes and mobile neutron sources has motivated the development of compact and multifunctional accelerators. The China Institute of Atomic Energy has developed an ultra-compact superconducting cyclotron, CYCIAE-36A, capable of accelerating H₂⁺ and α particles and delivering proton and α beams for applications including ²¹¹At production, PET isotope supply,...
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Mr Zhiqiang Zhang (Institute of Modern Physics, Chinese Academy of Sciences)20/05/2026, 16:00MC4.A11: Hadron accelerators: Beam CoolingPoster Presentation
To address the beam quality deterioration of high-energy, high-intensity ion beams in HIAF-BRing caused by heating effects such as intra-beam scattering (IBS), a high-energy electron cooling scheme based on an energy recovery linac (ERL) is proposed. In this scheme, the ERL is used to generate high-quality electron beams, which are then injected into an electron storage ring for multi-turn...
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Duan Gu (Shanghai Advanced Research Institute)20/05/2026, 16:00MC1.A04: Colliders: Circular Accelerators and Storage RingsPoster Presentation
We present the recent progress on the injector design for the Super Tau-Charm Facility (STCF). As an integral part of the STCF accelerator complex, the injector is a sophisticated accelerator system. Its primary role is providing high-quality, full-energy electron and positron beams for injection into the collider rings, serving as a key component for realizing high luminosity at the STCF. We...
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Thomas Banks (European Organization for Nuclear Research)20/05/2026, 16:00MC1.A02: Lepton Circular CollidersPoster Presentation
In the Future Circular Collider (FCC-ee) at CERN, lead shielding will be required on the collider arc dipoles around synchrotron radiation (SR) absorber locations to reduce radiation levels in the tunnel and protect sensitive components. The shielding assemblies will be mounted around the yokes, where scattered SR photons are expected to deposit 10-15 MW of power in total (across all absorber...
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Kiel Hock (Brookhaven National Laboratory)20/05/2026, 16:00MC1.A01: Hadron CollidersPoster Presentation
During the Relativistic Heavy Ion Collider (RHIC) Run 24 operations with
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100 GeV/u Au beams, significant backgrounds were observed at the sPHENIX
MAPS-based VerTeX (MVTX) detector. Extensive studies were performed dur-
ing RHIC operation to diagnose the source of the background. Through track-
ing simulations, the primary source of the backgrounds were found and removed
prior to beam... -
Julian Gethmann (Karlsruhe Institute of Technology)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Significant beam dynamics parameters, such as energy spread or transversal beam size, can be calculated from the transversal bunch profile.
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At the Karlsruhe Research Accelerator (KARA), located at the Karlsruhe Institute of Technology (KIT),
the beam size in the storage ring is being investigated using the KArlsruhe Linear arraY detector for MHz rePetition rate SpectrOscopy (KALYPSO), a... -
Max Herrmann (Deutsches Elektronen-Synchrotron DESY)20/05/2026, 16:00MC6.T27: Instrumentation: Low Level RFPoster Presentation
At the European Free-Electron Laser (EuXFEL) superconducting linac, a revised normal-conducting gun design with symmetrical feed was successfully installed and tested. Thermal expansion of the solid copper body dominantly affects the detuning transients of this cavity. To improve accuracy, and add time resolution over the duration of a pulse, we implemented and tested an observer that...
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Victoria Isensee (Technical University of Darmstadt)20/05/2026, 16:00MC5.D11: Code Developments and Simulation TechniquesPoster Presentation
For maintaining the designed optical performance of machines like the GSI heavy-ion synchrotron SIS18 or the FAIR fragment separator SFRS, accurate knowledge of magnetic field and element alignment is crucial. A Gaussian Process model with a physics-informed kernel based on a stochastic ensemble of lattices is proposed.
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Key advantages compared to LOCO (Linear Optics from Closed Orbits)... -
Shotaro Matsui (The University of Osaka)20/05/2026, 16:00MC4.T01: Hadron accelerators: Proton and Ion SourcesPoster Presentation
In order to achieve high energy resolution in nuclear physics experiments, it is important to maintain the beam quality during beam transport from the injector to the accelerator and to the experimental instruments. At the Research Center for Nuclear Physics (RCNP), the University of Osaka, high-resolution beams are currently obtained by injecting beams from an ECR ion source into the...
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ShaoHang Ma (University of Science and Technology of China)20/05/2026, 16:001MC1.A08: Colliders: Linear AcceleratorsPoster Presentation
The Super Tau-Charm Facility (STCF) is a next-generation electron-positron collider under development, with a designed center-of-mass energy of 2–7 GeV. Positrons generated by a high-energy electron beam striking a target are captured and accelerated to 200 MeV using large-aperture traveling-wave accelerating structures to reduce beam loss. A constant-aperture cavity geometry, in which the...
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ShaoHang Ma (University of Science and Technology of China)20/05/2026, 16:00MC1.A08: Colliders: Linear AcceleratorsPoster Presentation
The Super Tau-Charm Facility (STCF) is a next-generation electron-positron collider project proposed in China, designed to explore frontier physics in the tau-charm energy region. The facility's accelerator is required to provide electron and positron beams with tunable energies ranging from 1.0 to 3.5 GeV. This study presents the design of a traveling-wave accelerating structure for the STCF....
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Adem Ates (Goethe University Frankfurt), Leonie Bauer (Goethe University Frankfurt)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The Frankfurt Neutron Source (FRANZ) at the Institute for Applied Physics in Frankfurt (IAP) is advancing toward the commissioning of proton beams up to 2 MeV. To support beam tuning behind the RFQ–IH acceleration chain, a dedicated diagnostics section is being installed downstream of the IH structure. The setup focuses on transverse beam characterization using scintillation screens combined...
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Xing Yang (University of Science and Technology of China)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The Hefei Advanced Light Facility (HALF) is a fourth-generation synchrotron radiation light source in the low-energy region, based on a diffraction-limited storage ring. The high stability requirements for the beam orbit in a diffraction-limited storage ring necessitate that the digital beam position monitor processor (DBPM) achieve high-precision measurements. While compensating for...
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Zhiyuan Zhang (Institute of Advanced Light Source Facilities, Shenzhen)20/05/2026, 16:00MC6.T27: Instrumentation: Low Level RFPoster Presentation
The development of high-repetition-rate superconducting linear accelerators for advanced light sources imposes stringent demands on the performance of the Low-Level Radio Frequency (LLRF) control system. This report presents the design, implementation, and operational results of a high-precision LLRF system developed for the Dalian Advanced Light Source (DALS) injector—a 1 MHz superconducting...
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Cristina Pasotti (Elettra-Sincrotrone Trieste S.C.p.A.)20/05/2026, 16:00MC6.T27: Instrumentation: Low Level RFPoster Presentation
The new digital electronics of the four Radio Frequency
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(RF) plants for Elettra 2.0 (E2.0) is fully designed in house,
both hardware and firmware. The Digital Low-Level Radio
Frequency (DLLRF) works on a non-IQ sampling technique
and it is benefiting from the huge internal development
of a System On Chip (SoC) Field Programmable Gate Array
(FPGA) boards realized for the electron beam... -
David Gancarcik (European Organization for Nuclear Research)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The BDF/SHiP experiment requires precise monitoring of the beam dilution pattern on the high-power target absorbing up to 350kW (avg.). This paper presents the conceptual design of a dedicated Beam Dilution Monitor (BDM), which will enable observation of the circular beam sweep pattern during 400GeV/c proton operation. The proposed system is based on Secondary-Emission Monitor (SEM) grids...
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Inci Karaaslan (University of Chicago)20/05/2026, 16:00MC1.A09: Muon Accelerators, Neutrino Factories, Muon CollidersPoster Presentation
Reaching $10^{34}$ $\rm{cm}^{-2}s^{-1}$ luminosity range in a $10$ TeV Muon Collider within the short lifetime of the muon requires the reduction of the 6D emittance of the muon beam in a process described as muon ionization cooling. In the final cooling stage, the transverse emittance must be reduced to $22 \mu$m, typically by allowing longitudinal emittance growth up to downstream acceptance...
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554. Double RF system design using normal conducting passive harmonic cavity for SOLEIL II (WEP5092)Alexis Gamelin (Synchrotron soleil)20/05/2026, 16:00MC5.D05: Coherent and Incoherent Instabilities Theory, Simulations, Code DevelopmentPoster Presentation
Double rf systems are critical for achieving the parameters of fourth-generation synchroton light sources. These systems relax stochastic collective effects but also introduce instabilities, such as Robinson and periodic transient beam loading (PTBL) instabilities, which depend heavily on the cavity parameters. In the framework of the SOLEIL II project, we demonstrate how we can use...
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Alexei Blednykh (Brookhaven National Laboratory)20/05/2026, 16:00MC1.A04: Colliders: Circular Accelerators and Storage RingsPoster Presentation
The Electron-Ion Collider (EIC) Rapid Cycling Synchrotron (RCS) accelerates electrons from 750 MeV to 10 GeV over approximately 64.7 ms. While the baseline design simultaneously ramps both RF voltage and phase, this study evaluates an alternative where RF cavities are divided into two groups, each operating at a fixed 6.5 MV, with the effective voltage synthesized through phase control. In the...
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Frank Zimmermann (European Organization for Nuclear Research)20/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
With a perfect two-fold superperiodicity in a storage ring, the half integer resonance is not excited and can be overlapped by the beam tune spread induced, e.g., by beam-beam collisions in a collider or space charge in a hadron storage ring, without any detrimental effect on the beam.
If the superperiodicity of the quadrupolar lattice is broken, either by design or due to machine...
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Vaibhavi Gawas (European Organization for Nuclear Research)20/05/2026, 16:00MC5.D10: Beam-Beam Effects Theory, Simulations, Measurements, Code DevelopmentsPoster Presentation
The luminosity performance of FCC-ee is sensitive to spurious optics errors at the Interaction Point (IP), notably to nonzero waist shift, vertical dispersion, and transverse coupling. Using the code Xsuite, we study how these aberrations influence beam sizes, luminosity, and beamstrahlung power, for the FCC-ee baseline parameters. Multi-turn simulations have been carried out to study the...
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Annemarie Lauterbach (Goethe University Frankfurt)20/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
Beamlets provided by LINACs for injection into ring accelerators are subject to interplane correlation effects. Preliminary studies have shown that these correlations negatively affect the efficiency of 1-plane multiturn injection*. This study shows the effect of different grades of correlation between the transverse planes of the injected beamlets on the injection efficiency of...
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Chiara Maccani (European Organization for Nuclear Research)20/05/2026, 16:00MC5.D07: High Intensity Circular Machines Space Charge, HalosPoster Presentation
Hollow electron lenses are a promising tool for controlling beam halo at high-intensity colliders like the HL-LHC. A perfect lens can efficiently deplete particles above the inner radius of the electron beam while leaving the core – which travels through a nominally zero-field region – unaffected. However, residual multipolar fields in the electron beam and non-ideal compensations of entry and...
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Osama Mohsen (Argonne National Laboratory), Yine Sun (Argonne National Laboratory)20/05/2026, 16:00MC6.T33: Online Modelling and Software ToolsPoster Presentation
Precise reconstruction of the beam sigma matrix is critical for transport-line modeling and injection optimization. Our earlier work demonstrated that the differentiable simulation framework Cheetah enables gradient-based recovery of the 5×5 transverse sigma matrix at the APS-U BTS transport line using quadrupole scans. In this paper, we extend the method to improve efficiency and robustness....
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Julian Gethmann (Karlsruhe Institute of Technology)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Pulse parameters such as height, width and peak time provide valuable information about the source. However, real-time evaluation is currently hardly possible for high repetition rates such as those as found in a synchrotron. In this contribution, we record the summed signal from beam position monitors at the Karlsruhe Research Accelerator (KARA) with the FPGA-based pulse digitizer KAPTURE-2...
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Stefano Cleva (Elettra-Sincrotrone Trieste S.C.p.A.)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
To reliably and repeatably validate the electromagnetic behavior of the pickup prototypes designed for the Elettra 2.0 button-type beam position monitors, two different radio-frequency test fixtures have been developed. The first test fixture, based on a coaxial-line design that emulates the TEM excitation generated by a relativistic beam, allows to measure the transmission performance of the...
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Luisella Lari (Brookhaven National Laboratory)20/05/2026, 16:00MC1.A04: Colliders: Circular Accelerators and Storage RingsPoster Presentation
The Electron–Ion Collider (EIC) Project is a top priori-ty for the U.S. Department of Energy (DOE) and is ex-pected to be completed in the 2030s. The EIC facility is designed to map the internal structure of nucleons (pro-tons and neutrons) to understand how quarks and gluons generate their properties. The EIC is being built at Brookhaven National Laboratory (BNL), in partnership with the...
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Yuji Yamaguchi (Japan Atomic Energy Agency)20/05/2026, 16:00MC4.T12: Hadron accelerators: Beam Injection/Extraction and TransportPoster Presentation
A 3-GeV proton beam from a rapid cycling synchrotron (RCS) is provided to muon and neutron production targets at Materials and Life Science Experimental Facility by a 3-GeV RCS to Neutron facility Beam Transport (3NBT) line in J-PARC. In the 3NBT line, the 3-GeV proton beam is deflected in the vertical direction due to fringe field of a large aperture solenoid for capturing secondary particles...
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Dennis Proft (University of Bonn)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The electron accelerator facility ELSA houses two external high-energy beam lines. These deliver primary electron beams with energies between 0.8 and 3.2 GeV, extracted via slow resonant extraction from a synchrotron to a total of three different experimental sites. One beam line hosts two hadron physics experiments, while the second, located on the opposite side of the synchrotron, is used...
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Dr Salvador Sosa Guitron (Los Alamos National Laboratory)20/05/2026, 16:00MC4.A17: Hadron accelerators: High Intensity AcceleratorsPoster Presentation
The LANSCE Accelerator Modernization Project (LAMP) aims to modernize the existing LANSCE front-end technologies. Two existing 750-keV Cockcroft Waltons are planned to be replaced by a single radio-frequency quadrupole (RFQ), and a new 100 MeV DTL will be installed. The new LAMP front-end is required to deliver beams with similar timing patterns to what is currently delivered to the...
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Ivan Morozov (Elettra-Sincrotrone Trieste S.C.p.A.)20/05/2026, 16:00MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsPoster Presentation
Estimating the stability domain in view of its characterization and optimization is one of the primary topics of single-particle non-linear beam dynamics. The border of the stability domain or dynamic aperture (DA) has a complicated fractal boundary that cannot be reliably estimated by analytical means. Instead, a numerical computation is used to estimate the DA with the additional constraint...
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Kiyomi Seiya (High Energy Accelerator Research Organization)20/05/2026, 16:00MC4.A04: Hadron accelerators: Circular AcceleratorsPoster Presentation
The Fermilab Booster will accept a 600 µs beam pulse from the new superconducting Linac for PIP-II operations. The Booster is a rapid-cycling synchrotron that uses a resonant magnet circuit ramping at 15 Hz. For PIP-II, the cycle rate will increase to 20 Hz, and the injection pulse length will expand from 40 µs to 600 µs due to the lower output current from the new Linac. Because the Booste...
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Mr Dorian Coves (Bergoz Instrumentation (France))20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
To integrate the signals of beam current transformers into accelerator control systems, particle accelerators require high-performance digitizers with optimized bandwidth, sampling rate, and dynamic range. They must be accurate and reliable. And they should be easy to deploy and operate.
A specialized digitizer was developed to interface the Bergoz Instrumentation ACCT sensor and its analog...
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Ed Rial (Helmholtz-Zentrum Berlin für Materialien und Energie)20/05/2026, 16:00MC6.T22: Reliability, OperabilityPoster Presentation
Undulators at BESSY II are routinely inspected for their impact on the machine tune and orbit, with the goal of ensuring tune and orbit feedforward tables remain fit for purpose. In particular this is necessary following modifications to the storage ring, as well as more obvious cases such as the installation of new devices and repositioning of existing devices. To that end a commissioning...
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Tobias Habermann (Fulda University of Applied Sciences)20/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
This work investigates the effect of different training strategies on the performance of convolutional neural networks (CNNs) for real-time pile-up identification and correction in single particle counters at the GSI Helmholtz Centre for Heavy Ion Research. Building on a previously developed CNN capable of detecting particle pulses without domain-specific knowledge, we examine the influence of...
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Michael Kaemingk (Los Alamos National Laboratory)20/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
The Distributed-Drive Linac (DDL) concept allows independent control of the radiofrequency (RF) power and phase of each accelerator cell, realized by an RF power system consisting of discrete solid-state amplifiers (SSAs). The DDL concept is under investigation at Los Alamos Neutron Science Center (LANSCE) as a candidate for the future upgrade of the 805-MHz Coupled-Cavity Linac. Independently...
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Mr Volker Kleipa (GSI Helmholtz Centre for Heavy Ion Research)20/05/2026, 16:00MC6.T04: Accelerator/Storage Ring Control SystemsPoster Presentation
The control system of the GSI accelerator complex dates back to the early 1990s.
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It is based on a derivative of the MIL-1553 field bus, providing around 1 Mbit/s throughput and deterministic real-time operation.
Although a modern control architecture with smart front-ends (System Control Units, SCUs), Ethernet, and White Rabbit is now widely deployed at GSI, several hundred devices still... -
Dr Todd Satogata (Thomas Jefferson National Accelerator Facility)20/05/2026, 16:00MC1.T12: Colliders: Beam Injection/Extraction and TransportPoster Presentation
The electron injector for the Electron-Ion Collider (EIC) consists of a linear accelerator, a beam accumulation ring, and the Rapid Cycling Synchrotron (RCS) before the electrons are injected into the Electron Storage Ring (ESR) and collided. Extraction out of the RCS is complicated by limited space and the nominal beam pipe aperture, while injection into the ESR is complicated due to the...
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Mattia Stefanelli (European Organization for Nuclear Research, National Institute for Subatomic Physics)20/05/2026, 16:00MC5.D11: Code Developments and Simulation TechniquesPoster Presentation
Segment-by-Segment (SbS) analysis is employed in accelerators for the determination of lattice errors and corrections, by identifying deviations between optics functions propagated through a modelled lattice segment and measured values. For the Large Hadron Collider (LHC), this method is routinely used during optics commissioning for the compensation of strong local errors in the experimental...
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Helene Guerin (European Organization for Nuclear Research)20/05/2026, 16:00MC5.D11: Code Developments and Simulation TechniquesPoster Presentation
Accurate geometric representation is essential in accelerator beam-matter interaction Monte-Carlo simulations, yet conventional Constructive Solid Geometry (CSG) modeling of beamline elements or tunnels remains time-consuming and error-prone. Recent FLUKA developments offer a robust alternative to manual CSG implementation by introducing a CAD-based (Computer Aided Design) workflow. The new...
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Oleksiy Dolinskyy (GSI Helmholtz Centre for Heavy Ion Research)20/05/2026, 16:00MC5.D09: Emittance manipulation, Bunch Compression and CoolingPoster Presentation
The barrier bucket antiproton accumulation scheme is investigated for the RESR ring, which is proposed to be constructed using the existing COSY ring magnets. In the baseline design, RESR serves as an intermediate storage and accumulation ring for antiprotons precooled in the Collector Ring (CR) by stochastic cooling. The main objective is the accumulation of up to 10¹¹ antiprotons within a...
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Debdeep Ghosal (University of Liverpool)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
AWAKE is CERN's proton-driven plasma wakefield acceleration experiment, currently advancing toward Run-2c to demonstrate the higher energy acceleration of electrons while maintaining the beam quality. A second electron beam (of 150 MeV energy), produced in a newly installed electron source, will be injected and accelerated to several GeVs while aiming to keep good emittance. Diagnostics are...
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Johan Lundquist (MAX IV Laboratory, Lund University)20/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
Accelerator operators and beamline users can highly benefit from accurate and efficient measurements of FEL (free-electron laser) pulse power profiles. The use of machine learning to predict such profiles is an area of rapid development in the field. This work presents recent measurements and tests at the FLASH FEL at DESY of an image-based machine learning application developed to facilitate...
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Lewis Kennedy (European Organization for Nuclear Research, John Adams Institute for Accelerator Science, University of Oxford)20/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
The Final Focus System (FFS) results for CLIC at 1.5 TeV have thus far been estimated using a 3 TeV system operated at reduced energy. Here, we present a dedicated design for the 1.5 TeV stage, where we exploit reduced radiation effects to allow stronger dispersion and weaker chromaticity-correcting sextupoles, thereby mitigating beam transport nonlinearities. The resulting design is 220 m...
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Alexander Aleksandrov (Oak Ridge National Laboratory)20/05/2026, 16:00MC4.T12: Hadron accelerators: Beam Injection/Extraction and TransportInvited poster
Lasers are used in many applications with H⁻ beams, including laser charge exchange, laser wire scanners, and laser temporal pulse patterning. In these applications, the H⁻ beams exhibit a wide range of bunch lengths that depend on the focusing of the RF cavities, the energy spread of the beam, and space charge forces. Achieving the required laser pulse length for complete overlap with the H⁻...
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Stefan Funkner (Karlsruhe Institute of Technology)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The Ferninfrarot Linac- und Test-Experiment (FLUTE) at the Karlsruhe Institute of Technology (KIT) is a compact linac test facility providing sub-picosecond to femtosecond short electron bunches with energies up to several tens of MeV. The transient electric near-field of such bunches is relevant for understanding coherent THz emission and for developing compact field-sensitive beam...
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Christian Goffing (European Organization for Nuclear Research)20/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
The Large Hadron Collider (LHC) is a circular hadron collider for high-energy particle physics. Off-centre beam passage through quadrupoles results in additional deflection, which needs to be compensated by corrector magnets. Beam-based alignment is an option to reduce the beam offset in the quadrupoles by using an estimate for the Beam Position Monitor (BPM) to magnet offset as reference for...
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Helene Guerin (European Organization for Nuclear Research)20/05/2026, 16:00MC1.A09: Muon Accelerators, Neutrino Factories, Muon CollidersPoster Presentation
A multi-TeV muon collider relies on a particle souce based on a megawatt-scale proton beam striking a target to produce muons and pions immersed in a 20 T solenoid, followed by a tapering region and a chicane in solenoid magnets to capture and guide the pions and then muons toward cooling sections. For the characteristic target lengths that maximise the pion yield, a fraction of the proton...
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Ruaa Alharthy (University of Wisconsin–Madison)20/05/2026, 16:00MC1.A09: Muon Accelerators, Neutrino Factories, Muon CollidersPoster Presentation
This study uses FLUKA simulations to investigate pion production from proton interactions with a graphite target for muon collider applications. A 40 cm target is struck with 0.8 GeV and 8 GeV/c proton beams, and pion yields are evaluated in terms of angular and energy distributions. The dependence of pion yield on target length is also examined, showing saturation near one interaction length...
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Oksana Geithner (GSI Helmholtz Centre for Heavy Ion Research)20/05/2026, 16:00MC6.T33: Online Modelling and Software ToolsPoster Presentation
Commissioning of accelerator facilities involves many repetitive hardware tests and verification steps. At GSI, the large number of devices already makes it difficult to check all components manually after each shutdown, a challenge that will grow further during FAIR commissioning. To reduce operator workload and ensure consistent procedures, an automation tool has been developed that executes...
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Tilen Zagar (Cosylab)20/05/2026, 16:00MC6.T33: Online Modelling and Software ToolsPoster Presentation
Area Detector is widely used in accelerator and observatory control systems to build data processing pipelines for images and waveforms, but adding new processing stages normally requires specialized C++ development. This slows prototyping and limits access to modern analysis tools that are predominantly available in Python. We present a new Area Detector plugin that executes user-defined...
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Yong Liu (High Energy Accelerator Research Organization)20/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
A fundamental challenge in large-scale accelerator operation is to infer internal machine states from limited monitoring. In the J-PARC linac, errors in RF cavities lead to momentum drifts observable through beam phase monitors. Although the number and placement of monitors satisfy the solvability condition, the cumulative and sequentially coupled nonlinear nature of beam dynamics makes the...
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Stuart Walker (Deutsches Elektronen-Synchrotron DESY)20/05/2026, 16:00MC6.T33: Online Modelling and Software ToolsPoster Presentation
Controlling the beam longitudinal phase space (LPS) distribution is crucial for advanced free-electron laser operation modes. At the European XFEL, this task is particularly challenging due to the complex compression scheme, which includes three bunch compressors. We present an approach based on Bayesian optimisation that simplifies the search for compression configurations yielding current...
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Denis Ilia (Deutsches Elektronen-Synchrotron DESY, Universität Hamburg)20/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
Achieving low emittance at the photoinjector is essential for meeting the performance targets of the European XFEL, particularly for high photon energies and future high-duty-cycle operation. Both the temporal structure of the drive-laser pulse and the RF-gun settings contribute significantly to the final beam quality, yet their optimization is complicated by strong nonlinearities in the laser...
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Oksana Geithner (GSI Helmholtz Centre for Heavy Ion Research)20/05/2026, 16:00MC6.T22: Reliability, OperabilityPoster Presentation
We present operational statistics for the GSI accelerator complex during the FAIR construction phase from 2012 to 2025, covering UNILAC, SIS18, ESR, HEST and CRYRING@ESR. The analysis is based on beam-time schedules, availability monitoring, and fault annotations from the Operator Logbook (OLOG). During the last five years, failure entries were systematically reviewed and reclassified to...
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Vladimir Litvinenko (Stony Brook University)20/05/2026, 16:00MC1.A19: Lepton-Hadron CollidersPoster Presentation
Hadrons collision with electron beam in ring-ring collider differ from those in hadron collider. The main difference is that transverse position of electrons is changing at each turn by quantum fluctuations of synchrotron radiation. This random changes in position result in local density modulation and in additional transverse diffusion and emittance growth of the hadron beam. In this paper we...
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Kiel Hock (Brookhaven National Laboratory)20/05/2026, 16:00MC1.A01: Hadron CollidersPoster Presentation
The Electron Ion Collider (EIC) calls for collisions of longitudinally polarized
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protons and helium-3 on electrons. The polarized hadron beams will be accel-
erated and stored in the Hadron Storage Ring (HSR). To achieve longitudinal
polarization at the interaction point (IP), spin rotators are placed on either side
of the IP at 35.28 and -61.35 mrad. Due to the asymmetry of the rotators,... -
Arnaud CIEPLAK (Laboratoire de Physique des 2 Infinis Irène Joliot-Curie)20/05/2026, 16:00MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsPoster Presentation
PERLE (Powerful Energy Recovery Linac for Experiments) is a multi-turn, high-current energy-recovery linac under development at IJCLab, designed to operate at 20~mA and 250~MeV.
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To limit beam-induced losses in downstream superconducting sections, halo particles must be intercepted at low energy.
In this work, halo cleaning in the merger is studied using a 6D particle distribution obtained... -
Igor Ivanov (Institute of Nuclear Physics)20/05/2026, 16:00MC4.A13: Hadron accelerators: CyclotronsPoster Presentation
The electron cyclotron resonance (ECR) ion source DECRIS-3 of the DC-60 cyclotron* is one of the key components of the accelerator complex. It can operate both as an injector of heavy ions into the cyclotron to produce high-energy ion beams, and in standalone mode, providing low-energy beams. The ECR-source, as part of the DC-60 heavy-ion accelerator, was commissioned in 2006.
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To ensure the... -
Stuart Walker (Deutsches Elektronen-Synchrotron DESY)20/05/2026, 16:00MC6.T33: Online Modelling and Software ToolsPoster Presentation
Longitudinal phase space (LPS) measurements at the EuXFEL are reliant on several hardware and software subsystems. Previously, LPS measurements have required explicit manual operation of many of these subsystems by a specially-trained operator, which could be both time consuming and error prone. In order to make these measurements routine, fast, and simple enough that non-specialist...
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Silvia Verdu-Andres (Brookhaven National Laboratory), Wencan Xu (Brookhaven National Laboratory)20/05/2026, 16:00MC1.A04: Colliders: Circular Accelerators and Storage RingsPoster Presentation
Electron-Ion Collider (EIC) is a next generation particle accelerator to be built at Brookhaven National Laboratory, in partnership with Thomas Jefferson National Accelerator Facility. In EIC Cryomodules, there are SiC BLA for HOM absorbing. The power handling test was carried out and a second BLA high power test will be completed in early 2026. This paper presents the latest results of high...
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Silvia Verdu-Andres (Brookhaven National Laboratory), Wencan Xu (Brookhaven National Laboratory)20/05/2026, 16:00MC1.A04: Colliders: Circular Accelerators and Storage RingsPoster Presentation
Electron-Ion Collider (EIC) is a next generation particle accelerator to be built at Brookhaven National Laboratory, in partnership with Thomas Jefferson National Accelerator Facility. In Electron Storage Ring (ESR), 18 single-cell 591 MHz SRF cavities are required to compensate for up to 10 MW energy loss due to synchronic radiation. Two high power FPCs for each cavity are used to deliver up...
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Erdong Wang (Brookhaven National Laboratory)20/05/2026, 16:00MC1.A11: Colliders: Beam CoolingPoster Presentation
The hadron cooler is an essential system for achieving high luminosity in the Electron-Ion Collider (EIC). The required electron source parameters exceed the current state of the art. We are conducting an electron-source R&D program aimed at producing an average current above 75 mA with bunch charges of 1–3 nC.
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This proceeding outlines the high-voltage design of a DC gun operating at 500 kV,... -
Borja Rodriguez Mateos (European Organization for Nuclear Research)20/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
Recent advances in high-dimensional Bayesian Optimization have opened the door to new tools for beam commissioning. At the CERN Low Energy Ion Ring (LEIR), several tuning challenges arise from the complex parameter space governing beam transfer and accumulation dynamics. In this paper we benchmark several state-of-the-art High Dimensional Bayesian Optimization methods to optimize the transfer...
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Sergey Kurennoy (Los Alamos National Laboratory)20/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
Increasing energy of proton beam at the Los Alamos Neutron Science Center (LANSCE) from 800 MeV to 3-5 GeV will improve radiography resolution ten-fold. This energy boost can be achieved with a compact cost-effective linac based on normal conducting high-gradient (HG) RF accelerating structures operating at liquid nitrogen temperatures (cryo-cooled). Such an HG booster is feasible for proton...
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Ihar Lobach (Brookhaven National Laboratory)20/05/2026, 16:00MC1.A04: Colliders: Circular Accelerators and Storage RingsPoster Presentation
The Beam Accumulator Ring (BAR) is part of the Electron-Ion Collider (EIC) injector complex at Brookhaven National Laboratory. It is designed to accumulate a polarized 750 MeV electron beam up to a single-bunch charge of 28 nC for injection into the Rapid Cycling Synchrotron (RCS). A compact double-bend achromat lattice is based on the NSLS VUV ring. The BAR design incorporates well-proven...
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Guangling Chen (Horia Hulubei National Institute for R and D in Physics and Nuclear Engineering)20/05/2026, 16:00MC5.D11: Code Developments and Simulation TechniquesPoster Presentation
The ELI-NP (Extreme Light Infrastructure – Nuclear Physics) Gamma-ray Beam Source (ELI-GBS), currently under construction, employs an 800 MeV linear accelerator (LINAC) to generate high-brightness gamma rays through laser–electron interactions. Its control system is designed as a distributed, EPICS-based architecture, where engineering-level control is provided for devices such as LLRF,...
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Dr Dragana Popovic Renella (SENIS AG)20/05/2026, 16:00MC6.T17: Instrumentation: Alignment and SurveyPoster Presentation
This paper presents the design of a high-precision three-axis Teslameter and its application for magnetic field alignment of a superconducting magnet prior to gyrotron installation, at the Swiss Plasma Center. The instrument integrates an advanced 3-axis Hall sensor with an ultra-compact sensitive volume of 0.10×0.01×0.10 mm³, enabling true point-like vector field measurements. We describe the...
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Dr Weilun Qin (Institute of High Energy Physics, Chinese Academy of Sciences)20/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
Wakefields induced during the interaction of beam-environment could cause strong distortion of electron beam longitudinal and transverse phase space. Numerical modeling of the effect often relies on approximating the externally obtained point-charge wake with second-order Taylor expansion and convolving with beam distribution during particle tracking. In this contribution, we extend the method...
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Philipp Niedermayer (GSI Helmholtz Centre for Heavy Ion Research)20/05/2026, 16:00MC6.T05: Beam Feedback SystemsPoster Presentation
At the GSI SIS18 synchrotron, the Spill Optimization System (SOS) has been established as a key tool to improve spill quality during resonant slow extraction. During the 2025 beam times, the SOS was routinely used with the radio frequency knock-out (RF-KO) method for several experimental campaigns, enabling improved spill stability and more efficient beam delivery to users under various...
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Massimo Giovannozzi (European Organization for Nuclear Research)20/05/2026, 16:00MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsPoster Presentation
The production of the new superconducting magnets for the luminosity upgrade of the LHC is in full swing. The performance of the magnets is probed by means of detailed magnetic measurements of the transfer function and field quality of the various families of magnets, i.e. triplet quadrupoles and separation and recombination dipoles. In this paper, the current situation in terms of magnetic...
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Raphaël Roux (Université Paris-Saclay, CNRS/IN2P3, IJCLab)20/05/2026, 16:00MC5.D04: Beam Coupling Impedance Theory, Simulations, Measurements, Code DevelopmentPoster Presentation
The injector for the PERLE ERL in construction at IJCLab is based on a booster containing 4 superconducting cavities to reach 7 MeV for 20 mA of cw current. The cavities are single cell at 801.58 MHz. Due to the high average current, issues of beam break-up and power dissipation induced by the higher order modes of the cavities are a matter of concern. In this paper, we will report on the...
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Jorge Herranz (IFMIF-DONES España, Universidad de Granada)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The IFMIF-DONES facility located at Escúzar in Spain will consist of an accelerator delivering 125 mA of 40 MeV deuterons onto a liquid lithium target. The beam profile at the target will have a rectangular footprint with two side peaks to satisfy the irradiation requirements. The environment conditions are characterized by a high radiation background and the presence of lithium vapor....
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Manuel J. Gutiérrez (IFMIF-DONES España)20/05/2026, 16:00MC6.T04: Accelerator/Storage Ring Control SystemsPoster Presentation
IFMIF-DONES is an accelerator-based neutron source under construction in Granada, Spain. Its goal is to generate an intense and continuous flux of fusion-like neutrons to qualify the materials to be placed in nuclear-fusion reactors. Meeting its ambitious availability targets imposes stringent reliability requirements on all components, particularly transversal systems such as Control...
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Oleksandr Naumenko (European Organization for Nuclear Research)20/05/2026, 16:00MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsPoster Presentation
For multi-turn extraction at the CERN Proton Synchrotron, the beam is transversally split into five separate beamlets. It has been shown that an AC dipole excitation effectively controls the characteristics of these beamlets. For this purpose, the AC dipole is set in resonance with the horizontal betatron tune while the horizontal tune crosses the 4th-order resonance, creating a...
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Chiara Maccani (European Organization for Nuclear Research)20/05/2026, 16:00MC5.D07: High Intensity Circular Machines Space Charge, HalosPoster Presentation
The distribution of beam halo particles in the Large Hadron Collider (LHC) is affected by non-linear fields, in particular by the Landau octupoles used to provide tune spread for beam stabilization. These elements introduce amplitude-dependent tune shifts that deform the transverse phase-space and may alter the steady-state halo population. In this study, tracking simulations are performed to...
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Anna Radoslavova (European Organization for Nuclear Research)20/05/2026, 16:00MC1.A02: Lepton Circular CollidersPoster Presentation
The electron–positron Future Circular Collider (FCC-ee)
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is a proposed lepton collider for high-energy particle physics
as a possible successor of the Large Hadron Collider (LHC).
The extremely tight emittance and beam stability require-
ments of the FCC-ee make the control of time-dependent
magnetic field variations critical. Power supply ripples in-
troduce fluctuations in the magnetic... -
Hangzhou Li (University of Science and Technology of China)20/05/2026, 16:00MC1.A04: Colliders: Circular Accelerators and Storage RingsPoster Presentation
The Super Tau-Charm Facility (STCF), a next-generation high-luminosity frontier collider, adopts a large crossing angle with the Crab-Waist scheme to enhanced collision luminosity. The center-of-mass energy range of STCF is 2-7 GeV, and the designed collision luminosity will exceed $0.5 \times 10^{-35} \, \text{cm}^{-2} \text{s}^{-1}$. The STCF’s collider rings are two high-current,...
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Victor Smaluk (Brookhaven National Laboratory)20/05/2026, 16:00MC1.T12: Colliders: Beam Injection/Extraction and TransportPoster Presentation
The Beam Accumulator Ring (BAR) in the EIC injector chain accumulates charge from multiple linac pulses to provide the high-intensity polarized electron beam required for ESR injection. At the design single-bunch charge, beam–impedance effects become a key performance and stability limit, so initial broadband-resonator estimates must be refined with a realistic impedance budget. We use the 3D...
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Anthony Gilfellon (Cockcroft Institute)20/05/2026, 16:00MC5.D03: Calculations of EM fields Theory and Code DevelopmentsPoster Presentation
The UK XFEL (United Kingdom X-ray Free Electron
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Laser) is a proposed accelerator facility that will use pre-
dominantly superconducting RF structures to accelerate and
manipulate the transiting electron bunches. Deviations from
design longitudinal length of these Niobium RF cavities,
or cells within, caused by errors in manufacturing, fabrica-
tion tolerances, assembly and installation... -
Alexis Gamelin (Synchrotron soleil)20/05/2026, 16:00MC5.D04: Beam Coupling Impedance Theory, Simulations, Measurements, Code DevelopmentPoster Presentation
When computing the resistive wall impedance, one must account for variations in beam pipe aperture, conductivity, and beta function. This can be done by either summing individual contributions or using an "effective radius" in an analytic formula. However, the standard "effective radius" formula has limitations: it ignores cross-plane influences and lacks formulas for quadrupolar or monopolar...
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Natalia Milas (European Spallation Source)20/05/2026, 16:00MC5.D07: High Intensity Circular Machines Space Charge, HalosPoster Presentation
In the current design of the International Muon Collider Collaboration proton complex, a compressor ring rotates the proton beam in longitudinal phase space to produce the short pulses required for muon production. Previous simulation studies of this compressor have relied on 2.5D Particle-in-Cell (PIC) space charge in Xsuite, which employs a static mesh (i.e., it does not adapt to an evolving...
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Mrs Esraa Khidr (Johannes Gutenberg University Mainz)20/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
MESA, the Mainz Energy-Recovery Superconducting Accelerator, currently under commissioning at Johannes Gutenberg University Mainz, is designed to operate in two modes: external beam (EB) mode, with 150 μA polarized electrons at 155 MeV serving the P2 experiment, and energy-recovery linac (ERL) mode, with an unpolarized beam of 1–10 mA at up to 105 MeV for the MAGIX experiment. The latter...
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Shaun Preston (University of Oxford, John Adams Institute for Accelerator Science, Diamond Light Source)20/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
Injection efficiency into the Diamond Light Source Storage Ring (SR) is currently optimised by operators performing a grid scan over the final pair of corrector magnets inside the Booster-to-Storage Ring (BTS) transfer line. The phase advance between the pair is sufficient to provide good control over the position and angle of the beam as it enters the SR. However, the method is slow and the...
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jaehoon cha (Science and Technology Facilities Council)20/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
Accurate prediction of localised beam features such as peak loss and rapid envelope oscillations is essential for reliable operation of the Medium Energy Beam Transport (MEBT) at ISIS. Standard neural network surrogate models often struggle to capture these effects due to spectral bias, favouring smooth variations over sharp changes. In this work, we investigate the use of Fourier feature...
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Pierre Delahaye (Grand Accélérateur National d'Ions Lourds)20/05/2026, 16:00MC5.A30: Beam Dynamics: Polarized beamsPoster Presentation
The MORA experiment is looking for a signature of CP violation in the nuclear beta decay of trapped and laser polarised ions [1]. The polarisation technique is more efficient than traditional atom trapping techniques by several orders of magnitude, as recently demonstrated on line at IGISOL, in the university of Jyväskylä, Finland [2, 3]. This technique could ultimately enable the delivery of...
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Stephen Brooks (Brookhaven National Laboratory)20/05/2026, 16:00MC1.A01: Hadron CollidersPoster Presentation
In developing an alternative method of jumping transition in the Electron Ion Collider Hadron Storage Ring, simulations have been performed to show feasibility. Many challenges occur while ramping trapped beam. The effect of snapback on the superconducting magnets, longitudinal oscillations, and evolution of the island tune will be presented.
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Laurent Nadolski (Synchrotron soleil)20/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
Injection losses are a key challenge for SOLEIL II commis-
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sioning because the reduced storage-ring acceptance makes
off-axis injection highly sensitive to transport and optics
errors. We use multiparticle tracking with a corrected lat-
tice model including realistic static and jitter errors in the
booster and Transfer Line 2 (TL2). The results show that
losses are primarily governed by... -
Yue Hao (Facility for Rare Isotope Beams)20/05/2026, 16:00MC1.A19: Lepton-Hadron CollidersPoster Presentation
The Electron–Ion Collider (EIC) will be the first collider to use electron swap-out injection to maintain high bunch polarization during operation. Meeting the EIC performance goals places stringent requirements on the Electron Storage Ring (ESR) injection process: the injected bunch must be introduced with minimal disturbance to the hadron beam, and electron losses must remain negligible to...
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Felipe Donoso (Karlsruhe Institute of Technology)20/05/2026, 16:00MC6.T33: Online Modelling and Software ToolsPoster Presentation
The numerical solution of the Vlasov–Fokker–Planck (VFP) equation is a well-established method to simulate the dynamics of electron bunches in storage rings, including their self-interaction through wake fields. Inovesa is an efficient VFP solver architecture that enables accurate simulations of phase space evolution, capturing phenomena such as coherent synchrotron radiation (CSR) and the...
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Tilen Zagar (Cosylab)20/05/2026, 16:00MC6.T24: Instrumentation: Timing and SynchronizationPoster Presentation
Accelerators often use separate infrastructures for precise timing and machine protection, which increases cabling, integration complexity and operational overhead. We describe an approach that enhances a standard event-based timing system to provide fast beam interlock functionality on the same platform. Protection logic, flag distribution and rapid reaction paths are implemented directly in...
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Najmeh Mirian (Helmholtz-Zentrum Dresden-Rossendorf)20/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
The efficient operation of accelerator facilities increasingly relies on rapid access to heterogeneous operational knowledge, including logbooks, interlock reports, machine parameters, and historical archive data. At ELBE (Electron Linac for beams with high Brilliance and low Emittance) we are developing a Retrieval-Augmented Generation (RAG) framework that integrates facility documentation...
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Jan Uythoven (European Organization for Nuclear Research)20/05/2026, 16:00MC1.A01: Hadron CollidersPoster Presentation
The Large Hadron Collider operates with 24 power converter circuits supplying the lattice skew quadrupole magnets for coupling correction. These circuits are currently not interlocked via the Powering Interlock Controller. Recent operational experience shows that a trip of one of these circuits can cause beam losses that can lead to beam dumps via beam loss monitors.
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This study employs Xsuite... -
Vincent Schoefer (Brookhaven National Laboratory)20/05/2026, 16:00MC4.A30: Hadron accelerators: Polarized beamsPoster Presentation
Compensation of depolarizing partial snake resonances using betatron coupling has been demonstrated at the Brookhaven AGS. At the nominal acceleration rate, the depolarization of the proton beam from any one of the 82 resonances is too small to optimize the compensation each individual resonance empirically. The compensation therefore requires accurate modeling of the accelerator lattice and...
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Patrick Hunchak (University of Saskatchewan)20/05/2026, 16:00MC1.A02: Lepton Circular CollidersPoster Presentation
The non-linear effects that arise from misalignment and field errors have been shown to degrade both the dynamic aperture (DA) and (MA) in simulation of the Future Circular Collider electron-positron machine (FCC-ee). This study focuses on using multipoles, such as octupoles, to control the amplitude detuning and higher-order chromaticity as well as investigation of dedicated non-linear...
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Ziga Brencic (Jožef Stefan Institute, University of Ljubljana)20/05/2026, 16:00MC5.D11: Code Developments and Simulation TechniquesPoster Presentation
In every accelerator beamline, the goal is to achieve the highest possible desired beam throughput.
When the beamline consists of only a few ion optical elements, beam transport optimization is achieved by adjusting a few knobs, by an experienced operator.
At the Jožef Stefan Institute, we are currently developing the Low Energy Branch (LEB) *, designed for high-precision ion...
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Rancheng Bi (Lancaster University, Cockcroft Institute)20/05/2026, 16:001MC5.D12: Electron Cloud and Trapped Ion EffectsPoster Presentation
An Energy Recovery Linac based strong hadron cooler was previously considered for the Electron-Ion Collider. The required electron beam parameters for variable-energy strong hadron cooling place significant constraints on ion trapping and collective effects. This paper presents initial studies of these constraints through a combination of analytical modelling and numerical simulations of ion...
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Simon Hirlaender (University of Salzburg)20/05/2026, 16:00MC6.T04: Accelerator/Storage Ring Control SystemsPoster Presentation
Particle accelerators generate vast amounts of historical data from logs, yet learning-based control often still relies on risky online optimisation. To better utilise this data and avoid online exploration, we present an offline reinforcement learning (RL) workflow. First, we use XSuite to generate high-fidelity trajectories for steering tasks across representative scenarios, including optics...
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Mark Gulley (Los Alamos National Laboratory)20/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
The Los Alamos Neutron Science Center (LANSCE) User Facility has just celebrated over 53 years of beam operations. LANSCE is a kilometer-long H+/H- linear accelerator serving five active and unique user facilities. In 2024, due to several issues, including spare klystron inventory being at a critically low level, operations were limited to a low energy. In 2025, resuming full-energy operations...
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Remington Thornton (Los Alamos National Laboratory)20/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
The LANSCE Accelerator Modernization Project (LAMP) is designing a modernized front-end, up to 100-MeV, for the LANSCE accelerator. The LAMP front-end will replace the two Cockcroft-Waltons with a single Radiofrequency Quadrupole and replace the Drift Tube Linac (DTL) with a modernized version. As part of the Technical Readiness Evaluation there are Critical Technical Elements (CTEs) that need...
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Silke Van der Schueren (European Organization for Nuclear Research)20/05/2026, 16:00MC5.D03: Calculations of EM fields Theory and Code DevelopmentsPoster Presentation
HeLICS (Helium Light-Ion Compact Synchrotron) is a proposed cancer treatment facility developed within the Next Ion Medical Machine Study (NIMMS) at CERN, designed both for clinical treatment with protons and research with helium ions. Consisting of a triangular lattice with six 60 degree combined-function magnets with 30 degree edge angles, this machine challenges the current treatment of...
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Zhiyuan Zhang (Institute of Advanced Light Source Facilities, Shenzhen)20/05/2026, 16:00MC6.T27: Instrumentation: Low Level RFPoster Presentation
This paper presents the design and preliminary test results of a Low-Level Radio Frequency (LLRF) prototype system developed for the 1.3 GHz standard cryomodule of the Shenzhen Superconducting Soft X-ray Free Electron Laser (S3FEL). The system is implemented within an MTCA.4 platform, integrating eight RF controller boards for superconducting cavity field acquisition and microwave excitation...
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Mr Qiyuan Xu (Cockcroft Institute)20/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
Transverse beam imaging in radiation areas can be supported by relaying scintillation light through a multimode fiber (MMF) to a camera placed in a shielded area. However, the MMF scrambles the input, so a trained model is required to recover the beam distribution. This work studies a data efficient calibration method in which measured input and MMF output basis pairs are used as building...
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Giuliano Franchetti (GSI Helmholtz Centre for Heavy Ion Research)20/05/2026, 16:00MC5.D03: Calculations of EM fields Theory and Code DevelopmentsPoster Presentation
Modeling of the beam dynamics of high intensity bunched beams including
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the effect of Coulomb collision is challanging. This is because the
proper modeling of the collisionality must be consistent with the
computation of the mean field. To model this process a Monte-Carlo-
based PIC framework has been developed and implemented in the MICROMAP
library in order to compute collisionality and... -
Chunyi Wu (National Synchrotron Radiation Research Center)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The Taiwan Photon Source (TPS) streak camera system has been used for longitudinal beam studies since the early commissioning stage. This paper first presents a representative high-current instability observation associated with the CU15 insertion device taper and then recent measurements of bunch length and synchronous phase under operation with the superconducting RF (SRF) + passive 3rd...
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Nimue Schmidt (GSI Helmholtz Centre for Heavy Ion Research, Technical University of Darmstadt, Helmholtz Institute Mainz)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
At the heavy-ion accelerator UNIversal Linear ACcelerator (UNILAC) at GSI Helmholtz Center for Heavy Ion Research (GSI) in Darmstadt, measurements of the longitudinal emittance were performed using a Fast Faraday Cup (FFC) installed in a dispersive section. The FFC provides high-resolution, time-resolved measurements of the charge distribution along the longitudinal beam profile. Different...
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Yasuyuki Sugiyama (High Energy Accelerator Research Organization)20/05/2026, 16:00MC4.A17: Hadron accelerators: High Intensity AcceleratorsPoster Presentation
The J-PARC Main Ring (MR) is a high-intensity proton synchrotron, which accelerates protons from 3 GeV to 30 GeV.
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In addition to protons, we are considering accelerating heavy ions to GeV/u energies in the MR as part of the J-PARC heavy-ion program (J-PARC HI).
The heavy ions will be injected from the new heavy-ion injector into the J-PARC Rapid Cycling Synchrotron (RCS) and delivered to... -
Ivan Karpov (European Organization for Nuclear Research)20/05/2026, 16:00MC5.D05: Coherent and Incoherent Instabilities Theory, Simulations, Code DevelopmentPoster Presentation
Recent studies showed that the broadband impedance in synchrotrons can significantly alter the longitudinal multi-bunch instability threshold. The results of the beam-based impedance measurement campaign in the Large Hadron Collider (LHC) reveal a discrepancy with predictions based on the present impedance model. A larger imaginary impedance with a lower roll-off frequency would reproduce the...
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Janine Issa (Laboratoire de Physique des 2 Infinis Irène Joliot-Curie)20/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
In an Energy Recovery Linac (ERL), precise longitudinal dynamics control is essential for both delivering the required bunch parameters at the interaction points and for enabling energy recovery. This paper will specifically talk about these studies for the PERLE accelerator. PERLE (Powerful Energy Recovery Linac for Experiments) is a proposed high-power ERL delivering a 250 MeV, 20 mA beam (5...
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Alexandre Lasheen (European Organization for Nuclear Research)20/05/2026, 16:00MC5.D06: Coherent and Incoherent Instabilities Measurements and CountermeasuresPoster Presentation
The beam quality of high-intensity proton and ion bunches in the CERN Proton Synchrotron (PS) is limited by a longitudinal microwave instability at transition crossing. This single-bunch instability manifests itself as a rapid longitudinal emittance blow-up and impacts, for instance, the intensity and bunch length to the AWAKE experiment. In this contribution, results of complete parameter...
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Kouki Hirosawa (National Institutes for Quantum Science and Technology)20/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
Recent hadron linacs, such as the IFMIF accelerator [1], aim to achieve an average beam current beyond 100 mA. In addition, a single-cell cavity linac for nuclear waste transmutation [2], which just started its development, is expected to deliver continuously a D+ beam of 1 A. In such high-intensity beam linacs, even sub-percent levels of beam losses can lead to significant activation....
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Binghao Zhang (University of Science and Technology of China)20/05/2026, 16:00MC1.T12: Colliders: Beam Injection/Extraction and TransportPoster Presentation
The Super Tau-Charm Facility is a high-luminosity electron–positron collider operating at a center-of-mass energy range of 2–7 GeV. The stringent requirements for beam brightness and stability pose significant challenges to the injector transport system, especially the positron transport lines of the damping ring. Beam transverse emittance is one of the primary parameters, which is influenced...
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Ayaka Kondo (Nagoya University)20/05/2026, 16:00MC4.A09: Hadron accelerators: Muon Accelerators, Neutrino Factories, Muon CollidersPoster Presentation
A muon linear accelerator is under development at J-PARC for precise measurement of the muon anomalous magnetic moment (g-2) and search for the electric dipole moment (EDM). The disk-and-washer (DAW) structure is employed to accelerate muons from 30% of the speed of light (kinetic energy = 4 MeV) to 70% (40 MeV) at 1296 MHz. The muon DAW consists of tanks accelerating the muons and bridge...
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Antoine Breteaux (École Nationale Supérieure d'Ingénieurs de Caen)20/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
Lutex is a high-performance irradiation facility providing the world’s largest testing area (400 × 700mm2). It delivers light-ion beams with very high fluxes at 300keV/u (∼5000km/s) for H+ up to 4×109 protons/cm2/s. This enables rapid reproduction of extreme exposure conditions and allows for short time qualification of a material lifetime. For comparison, a typical solar storm reaches only...
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Aleksandr Gorn (European Organization for Nuclear Research)20/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
The new beam-dump production target serving for Search for Hidden Particles (SHiP) experiment will be built just upstream of the ECN3 experimental cavern in CERN’s North Area. The future experiment requires an increase in the number of protons delivered to this location to over 4e19 per year. This necessitates upgrades of the primary beam transfer lines and their optics coming from SPS...
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Yuwen An (Institute of High Energy Physics)20/05/2026, 16:00MC4.A14: Neutron Spallation FacilitiesPoster Presentation
During the beam power upgrade of the Rapid Cycling Synchrotron (RCS) of the China Spallation Neutron Source (CSNS), 16 additional trim quadrupoles were installed for beam optics correction. However, they are relatively close to the nearby main quadrupole magnets, resulting in a strong field interference effect. The interference causes a serious distortion of the lattice parameters and can lead...
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Stephen Brooks (Brookhaven National Laboratory)20/05/2026, 16:00MC4.A11: Hadron accelerators: Beam CoolingPoster Presentation
A method has been developed to match large three-dimensional Coulomb crystals into existing accelerators. Simulations show bunch temperatures below 1 Kelvin persisting for thousands of turns in the BNL Booster and for tens of thousands of turns in an idealised ring (both with no cooling). Focussing forces balance space charge to give zero net phase advance and the crystal structure can be...
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Mattia Stefanelli (European Organization for Nuclear Research, National Institute for Subatomic Physics)20/05/2026, 16:00MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsPoster Presentation
The $3Q_y$ resonance is of particular concern at LHC injection given its potential to degrade the lifetime and the machine dynamic aperture. During measurements of the chromatic linear optics for the 2025 LHC commissioning, a large variation of the $3Q_y$ resonance strength at different momentum deviations $\delta$ was noticed. Further studies have been performed in order to assess the...
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Shin-ichiro Meigo (Japan Atomic Energy Agency, Japan Proton Accelerator Research Complex)20/05/2026, 16:00MC4.T20: Hadron accelerators: Targetry and DumpsPoster Presentation
As a material-damage index due to the radiation, displacement per atom (dpa) is used widely, which is given by the particle fluence and the displacement cross section. The displacement cross section can be obtained by the electrical resistivity change of target materials due to the proton irradiation by the Matthiessen rule. The sample had to be cooled at cryogenic temperature to observe the...
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Mattia Stefanelli (European Organization for Nuclear Research, National Institute for Subatomic Physics)20/05/2026, 16:00MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsPoster Presentation
Local chromaticity can be defined as the local variation of the total betatron phase advance with momentum deviation $\delta$, and it can be interpreted as a measurement of the chromaticity generated over a limited segment of the lattice, rather than for the entire ring. It can be a useful tool to understand various insights of the beam operation, in particular how the phase is locally...
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Stefan Funkner (Karlsruhe Institute of Technology)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Electro-optical detection provides a powerful method for characterizing the electric fields of relativistic electron beams and their emitted radiation. We report on the use of novel thin-film lithium niobate electro-optical sensors for the detection of freely propagating terahertz (THz) pulses and, for the first time, measurements of coherent synchrotron radiation (CSR) at the Karlsruhe...
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Vadim Gubaidulin (Synchrotron soleil)20/05/2026, 16:00MC5.D05: Coherent and Incoherent Instabilities Theory, Simulations, Code DevelopmentPoster Presentation
There are two main sources of high-frequency longitudinal impedance: coherent synchrotron radiation (CSR) and high-frequency NEG-coated resistive wall impedance. They can drive microbunching instability, which is a potential risk to maintaining stable and low energy spread beam. To address this, these effects are now integrated into the particle tracking code \texttt{mbtrack2}. This paper...
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Giuliano Franchetti (GSI Helmholtz Centre for Heavy Ion Research)20/05/2026, 16:00MC5.D07: High Intensity Circular Machines Space Charge, HalosPoster Presentation
The periodic resonance crossing induced by space charge in bunched beams has been studied
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in many aspects. The criticality of the phenomenon appears in regimes of storage for hundreds
of synchrotron oscillations, by inducing a slow diffusion, which is very difficult to contain.
The pseudo-stochasticity of the dynamics of the periodic crossing makes the phenomenon
very difficult to frame in... -
Dr Armen Grigoryan (Center for the Advancement of Natural Discoveries using Light Emission)20/05/2026, 16:00MC6.T24: Instrumentation: Timing and SynchronizationPoster Presentation
Efficient electron beam acceleration requires precise synchronization between beam dynamics and RF phase–amplitude modulation, which demands fast and reliable tuning systems. Conventional ferrite or mechanical regulators are limited by slow response times, prompting interest in ferroelectric materials for high-power RF phase shifters and tuners. In this work, self-propagating high-temperature...
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Alan Williams (Los Alamos National Laboratory)20/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
The Isotope Production Facility (IPF) at Los Alamos Neutron Science Center (LANSCE) contains an adjustable collimator, able to handle various aperture sizes. The collimator contains integrated temperature and current measurements provided for each collimator segment, for diagnostic and feedback purposes. To simplify collimation, we plan to replace this collimator system with a 'virtual'...
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Halil Deveci (European Organization for Nuclear Research)20/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
This contribution presents the modeling of the dipole magnets of the Low-Energy Ion Ring (LEIR) at CERN. The LEIR dipoles are iron-dominated C-type 90° sector magnets. Each LEIR dipole consists of 6 blocks of 1-meter-long laminated steel yoke with copper coils. The biggest challenges of the design stem from the axial air gaps and the varying angles between the blocks, causing unwanted...
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Silke Van der Schueren (European Organization for Nuclear Research)20/05/2026, 16:00MC5.D03: Calculations of EM fields Theory and Code DevelopmentsPoster Presentation
The ELENA (Extra Low ENergy Antiproton) ring is a compact synchrotron designed to decelerate antiprotons delivered by the Antiproton Decelerator. In ELENA, the beam dynamics is dominated by the dipole edges, making this machine an ideal tool for benchmarking theoretical fringe field models against direct beam measurements. In this paper, we present a comparison of theoretical models and...
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Rama Calaga (European Organization for Nuclear Research)20/05/2026, 16:00MC1.A01: Hadron CollidersPoster Presentation
Roughly 2500 bunches are accelerated to collision energy during physics production in the Large Hadron Collider (LHC). Due to the beam production scheme in the injector chain, a certain spread in bunch length and intensity at injection into the LHC is unavoidable. The variation in these parameters has implications for RF capture, leakage of particles from the buckets at flat-bottom, and...
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Annemarie Lauterbach (Goethe University Frankfurt)20/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
Multiturn Injection is an essential tool for achieving high beam intensities in synchrotrons. At SIS-18, a significant increase in the intensity of the uranium beam is foreseen, by several orders of magnitude up to 1.5x10e15 ions per injection cycle, prior to acceleration and extraction to SIS-100. Under these conditions, any beam losses during injection become critical, both in terms of beam...
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Jonas Christ (Technical University of Darmstadt)20/05/2026, 16:00MC5.D11: Code Developments and Simulation TechniquesPoster Presentation
Simulations of particle beam dynamics in electron accelerators need to account for both internal space charge effects and transient electromagnetic waves scattered at chamber walls. Commonly, these effects are treated separately using very different simulation techniques. We have developed a coupling procedure to account for both effects simultaneously by using a scattered field formulation....
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Mr Corey Lehmann (University of Oxford)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The losses measured by Beam Loss Monitors (BLMs) at synchrotron light source facilities offer useful but indirect insight into the state of the beam. Frequent changes to insertion devices, beam current, temperature, humidity, and other factors make the line between normal operation and anomalous behaviour unclear. Data was collected passively during user beam on the storage ring of Diamond...
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Vaibhavi Gawas (European Organization for Nuclear Research)20/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
Accurate control of the transverse linear coupling is important for achieving the target luminosity in FCC-ee. We have implemented a simplified FCC-ee coupling model in Xsuite based on linear maps and on local lattice coupling matrices. This approach is benchmarked against the full FCC-ee optics model, showing good agreement in the behavior of betatron tunes, beta functions, and...
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Anna Alexander (Los Alamos National Laboratory)20/05/2026, 16:00MC4.T12: Hadron accelerators: Beam Injection/Extraction and TransportPoster Presentation
The LANSCE Accelerator Modernization Project (LAMP) will replace the front-end of the existing LANSCE accelerator, from ion sources through the end of the 100-MeV drift-tube linac. LAMP, and the RFQ Test Stand (RFQTS), assume high space charge neutralization in the low energy beam transport (LEBT) as solenoids are not sufficient to focus the beams and prevent beam blow up. We present the...
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1279. Modelling of the HB2TF injector in COMSOL with benchmarking using Astra and RF-track (WEP5081)Illya Drebot (Istituto Nazionale di Fisica Nucleare)20/05/2026, 16:00MC5.D03: Calculations of EM fields Theory and Code DevelopmentsPoster Presentation
A comprehensive electromagnetic and beam-dynamics model of the High Brightness Beam Test Facility (HB2TF) electron injector under development at INFN-LASA has been implemented using COMSOL Multiphysics. The model incorporates the DC photocathode gun and the low-energy transport line. Three-dimensional electric and magnetic field distributions were computed and employed for particle tracking...
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Dr Miriam Brosi (Karlsruhe Institute of Technology)20/05/2026, 16:00MC6.T25: Instrumentation: LasersPoster Presentation
The linac-based test facility FLUTE (Ferninfrarot Linac- Und Test-Experiment) at the Karlsruhe Institute of Technology (KIT) was designed as a test bench for accelerator technologies with a broad range of beam parameters. The electron bunches are generated in a UV photo-injector which offers laser pulse shaping as control of the beam parameters. The imprint of a transverse laser profile...
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James Jones (ASTeC, STFC Daresbury Laboratory, Cockcroft Institute)20/05/2026, 16:00MC6.T33: Online Modelling and Software ToolsInvited poster
Digital shadows offer a methodology for bridging physical particle accelerators with their virtual counterparts, enabling predictive modelling, automated control, and improvements in facility design and implementation. A digital shadow for the CLARA accelerator is being developed, integrating two complementary tools: LAURA, an ontology-driven description language for particle accelerator...
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Sara Dastan (Elettra-Sincrotrone Trieste S.C.p.A.)20/05/2026, 16:00MC5.D05: Coherent and Incoherent Instabilities Theory, Simulations, Code DevelopmentPoster Presentation
We present a systematic multi-bunch longitudinal beam dynamics study for the Elettra 2.0 storage ring [1] equipped with a double RF system (main RF cavity plus passive third-harmonic cavity). The higher-order modes (HOMs) of the main RF cavity, obtained from 3D eigenmode simulations, are used as input to coupled-bunch instability models [2]. For these HOMs, we compute growth rates using a...
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Ibon Bustinduy (ESS Bilbao), Juan Munoz (ESS Bilbao)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The ISOLDE Superconducting Recoil Separator (ISRS) at CERN is a rotatable high-resolution spectrometer able to separate reaction fragments induced by HIE-ISOLDE beams, from the lightest to the heavies nuclear species, at collision energies up to 10 MeV/u. The injection of the ISOLDE beam into this ring requires a more compact bunch structure, so a Multi-Harmonic Buncher (MHB) device was...
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Sami Tantawi (Arizona State University)20/05/2026, 16:00MC1.A08: Colliders: Linear AcceleratorsPoster Presentation
We present a novel linac topology based on the distributed-coupling paradigm, operating with a 3pi/4 phase advance. Distributed coupling 3pi/4 phase advance structures require four manifolds to supply RF power to the cavities while maintaining a π phase shift between cavities connected to each manifold to ensure equal power distribution. In the topology presented here, the number of physical...
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Yelong Wei (University of Science and Technology of China)20/05/2026, 16:00MC1.A10: Colliders: Damping RingsPoster Presentation
For the TM020 cavity used for collider ring beam en-ergy replenishment in the proposed Super Tau-Charm Facility (STCF) project, a waveguide-type power coupler capable of handling CW 300 kW power has been adopted. The power coupler assembly comprises a cavity-welded waveguide coupling port, an online ad-justable movable tuner, a 90° waveguide bend, an RF window and a stepped waveguide...
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Yoshihiro Ishi (Kyoto University)20/05/2026, 16:00MC1.A12: Colliders: Fixed Field Accelerators (FFAs)Poster Presentation
Muon catalyzed fusion(MuCF) using negative muons is expected to be one of the possibilities for future energy generation. To make this a reality, negative muons must be produced as energy-efficiently as possible. In this paper, we propose a hadron beam collider using a two-way FFAG accelerator as a scheme for achieving this, and discuss its feasibility.
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Bozo Richter (Deutsches Elektronen-Synchrotron DESY, Hamburg University of Technology)20/05/2026, 16:00MC6.T27: Instrumentation: Low Level RFPoster Presentation
TESLA 9-cell elliptical cavities are used in the accelerators of the European XFEL and LCLS-II. The high duty cycle upgrade study for EuXFEL and the LCLS-II-HE program target loaded Quality factors of 6e7 and beyond, leading to RF cavity half bandwidths below 11Hz. Stable operation in these conditions heavily relies on active RF resonance control, as required RF drive power to maintain...
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Gediminas Stankunas (Lithuanian Energy Institute)20/05/2026, 16:00MC6.T18: Instrumentation: Radiation Monitoring and SafetyPoster Presentation
This work presents detailed neutronics simulations of the NEAR station at the CERN n_TOF facility, aimed at characterizing neutron spectra and activation responses for different irradiation configurations. The analysis was performed using the MCNP Monte Carlo transport code with the FENDL-3.2 nuclear data library, ensuring reliable modelling across the broad neutron-energy range delivered at...
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Dr Mael Le Garrec (Institut National de Physique Nucléaire et de Physique des Particules)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Accurate Beam-Position Monitor (BPM) calibration is essential for high-quality optics measurements and reliable beam-based diagnostics in the Large Hadron Collider. Recent in-depth analyses combining advanced optics-measurement techniques, including measurements of a novel $60^{\circ}$ optics, with cross-checks from complementary beam instrumentation have revealed the presence of a previously...
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Dr Yu. Bylinskii (TRIUMF)20/05/2026, 16:00MC4.A13: Hadron accelerators: CyclotronsPoster Presentation
A new 40 m long electrostatic beamline has replaced the original 50-year-old injection line at the 500 MeV cyclotron.
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A novel suppression scheme for the cyclotron stray magnetic field has been implemented using a continuous, in-vacuum µ-metal shield. Beam bunching is performed with a new three-harmonic buncher, whose amplitude has been calibrated through beam-based techniques. Advanced... -
Guangjiang Li (Brookhaven National Laboratory), Silvia Verdu-Andres (Brookhaven National Laboratory)20/05/2026, 16:00MC1.A04: Colliders: Circular Accelerators and Storage RingsPoster Presentation
Ferrite fast tuner enables accelerating voltage phase modulation in sub-millisecond during the gamma jump coordinating with magnet lattice to keep longitudinal stability of the beam. Due to the three times higher beam current in hardon storage ring (HSR) of Electron-Ion Collider (EIC) than that in RHIC, the beam loading induced frequency detuning will be also multiplied. Hence a higher...
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Linhao Zhang (University of Science and Technology of China)20/05/2026, 16:00MC1.A02: Lepton Circular CollidersPoster Presentation
The Super Tau-Charm Facility is a new-generation electron-positron collider in the beam energy range of 1-3.5 GeV, with a target luminosity exceeding $5×10^{34}\ \text{cm}^{−2}\text{s}^{−1}$ at 2 GeV using a large Piwinski angle and crab-waist collision scheme. However, the required sub-millimeter vertical beta function ($\beta_y^*$ < 1 mm) induce strong nonlinear chromaticity, which severely...
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Helena Alamprese (Facility for Rare Isotope Beams)20/05/2026, 16:00MC1.A01: Hadron CollidersPoster Presentation
Beam–beam interactions are well known to limit the performance of high-energy hadron colliders, as they can degrade beam quality and reduce particle lifetime. When the strengths of the beam–beam and space-charge forces become comparable, as in high-intensity, mid-energy colliders, their interplay results in complex nonlinear dynamics and the excitation of resonances.
In this project, we...
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Gangtak Nanpon (Joseph Sarwuan Tarka University Makurdi)20/05/2026, 16:00MC5.D03: Calculations of EM fields Theory and Code DevelopmentsPoster Presentation
Nonlinear plasma wakefield excitation by an ultra-relativistic square Gaussian beam is simulated using FBPIC code. The beam interaction with the background plasma electrons revealed blowout cavity formation. As the beam propagates further into the plasma, blowout cavity elongation along the beam propagation direction was observed. The corresponding electromagnetic field components excited...
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Massimo Camarda (STLab srl, SenSiC GmbH (Switzerland))20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
We present a combined theoretical and experimental study of Silicon Carbide–based sensors for X-ray white-beam monitoring and diagnostics in synchrotron facilities. Two complementary sensor architectures have been analysed: hole-type sensors, offering mature operation and high spatial sensitivity, and blade-type sensors, providing enhanced robustness under large beam missteers and suited as...
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Zoltán Kormány (HUN-REN Institute for Nuclear Research)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Time-of-flight (TOF) measurements are superior to other methods of measuring beam energy, since the quantity being measured is directly related to the velocity, and therefore the kinetic energy, of the particles. Conventional TOF systems use independent sensors in the beam transport system, each with a separate signal path to the measuring electronics. The difference in signal delay between...
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Hiren Dave (Brookhaven Science Associates)20/05/2026, 16:00MC1.A04: Colliders: Circular Accelerators and Storage RingsPoster Presentation
The National Synchrotron Light Source II (NSLS-II) storage ring requires a high-current (400 A), high-voltage (1 kV) dipole power supply system to maintain stable beam operations. Despite the high reliability of the primary system, a 2022 failure event resulted in over 20 hours of beam downtime, highlighting the necessity for enhanced operational resilience. This paper presents the design and...
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Erion Gjonaj (Technical University of Darmstadt)20/05/2026, 16:00MC5.D11: Code Developments and Simulation TechniquesPoster Presentation
A simple and cost effective approach to a beam-driven THz-source is based on the interaction of the particle beam with its own wakefield. The latter is generated in a dielectric loaded or otherwise inhomogeneous waveguide-like structure, which supports the propagation of slow-wave electromagnetic modes. Recently, the application of Antiresonant Fibers (ARFs) has been proposed for use as a...
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Dr David Olsson (MAX IV Laboratory)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The MAX IV storage rings use passive Landau cavities to achieve the desired bunch lengthening, and thus the desired performance in terms of beam lifetime and beam stability. It is therefore important to know the magnitude of the fields in these cavities during operation. Since the Landau cavities are passive, the calibration has to be done with beam present and is usually done at low current...
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Mr Anas Mohammad (Synchrotron-Light for Experimental Science and Applications in the Middle East)20/05/2026, 16:00MC6.T22: Reliability, OperabilityPoster Presentation
In this work, we present the use of PandABox timing
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module to implement position-based and time-based on-
the-fly scanning to continuously acquire data at the X-ray
Absorption Fine Structure (XAFS) and X-ray Fluorescence
(XRF) beamline of SESAME synchrotron light source. For
position-based scanning, we first developed a module that
automatically partitions the user-defined energy and... -
Marcel Hun (Heidelberg Ion Beam Therapy Centre)20/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
The Heidelberg Ion Beam Therapy Centre (HIT) plans to implement multi-energy extraction, which allows faster cancer treatment by re-accelerating unextracted beam in the synchrotron. Thus an increase of the number of particles injected into the synchrotron would directly benefit patient treatment time and consequently also the number of patients treated. However, optimization of beam line...
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Mr Matthias Bonora-Tam (European Organization for Nuclear Research)20/05/2026, 16:00MC6.T22: Reliability, OperabilityPoster Presentation
At CERN, B-Train systems provide real-time magnetic field information to the RF and other subsystems with high precision and reliability, with less than 3 beam-hours lost per year per machine. Using the Proton Synchrotron Booster (PSB) as a case study, we describe a software performance-monitoring framework, currently in the prototyping phase, aimed at improving the absolute accuracy and...
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Borja Rodriguez Mateos (European Organization for Nuclear Research)20/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
Stripper foil degradation at the CERN Low Energy Ion Ring (LEIR) poses a significant challenge for beam operations. As the heavy ion beam passes through the stripper foil at the end of the injecting linac, the foil degrades over time, altering the beam energy distribution and reducing the achievable accumulated intensity in the ring. Addressing this operational limitation using traditional...
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Shengjin LIU (China Spallation Neutron Source)20/05/2026, 16:00MC4.T01: Hadron accelerators: Proton and Ion SourcesPoster Presentation
The CSNS ion source has been in operation over 10 years since 2015. It has provided a stable beam current, progressing from an initial beam commissioning power of 10 kW to the current 170kW. The CSNS ion source is responsible for delivering 30-40 mA H- at 50kV. During CSNS phase I, a Penning surface negative ion source was used, based on the ISIS ion source prototype. It met the operational...
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Takamitsu Nakanoya (Japan Atomic Energy Agency)20/05/2026, 16:00MC4.T32: Ion Beam StrippingPoster Presentation
At the J-PARC 3 GeV Rapid Cycling Synchrotron (RCS), a 400 MeV negative hydrogen (H-) beam from the linac is converted to proton (H+) using a charge-exchange foil and then accelerated to 3 GeV. As the beam power has increased toward the design value of 1 MW, foil de-formation and breakage of the SiC support fibers caused by beam irradiation have become major issues, leading to beam dump...
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Panagiotis Zisopoulos (European Organization for Nuclear Research)20/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
Following the SPS crab cavity tests in 2025, dedicated machine studies were carried out to investigate optics perturbations introduced by the cavity module and their relation to resonance driving terms. Particular emphasis was placed on identifying possible sextupolar components and assessing their impact on the betatron tune. Measurements using controlled orbit bumps were performed to isolate...
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Yuwen An (Institute of High Energy Physics)20/05/2026, 16:00MC4.A04: Hadron accelerators: Circular AcceleratorsPoster Presentation
Optics correction has been essential to the performance of the China Spallation Neutron Source (CSNS) since its beam commissioning in 2017. This work comprehensively reviews the beam tuning, optics measurements, and lattice model corrections carried out over the years. We summarize the evolution of methodologies, key challenges in different phases, and the application of techniques including...
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Yixing Lu (Shanghai Synchrotron Radiation Facility)20/05/2026, 16:00MC4.A04: Hadron accelerators: Circular AcceleratorsPoster Presentation
Under the framework of the SSRF proton-and-helium therapy facility project, a compact synchrotron with a 28-meter circumference has been designed for the generation of high-intensity proton and helium beams. To achieve the high-dose-rate design objective, the optics design of this synchrotron has been further optimized. This optimization successfully reduced the maximum value of the envelope...
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1573. Optimisation of the transition energy crossing optics in the CERN Proton Synchrotron (WEP5050)Foteini Asvesta (European Organization for Nuclear Research)20/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
In view of optimising the performance for the fixed-target experiments in the CERN accelerator complex, studies aimed at increasing intensity in the Proton Synchrotron (PS) are currently taking place. Measurements have revealed losses along the PS cycle for the high intensity beams destined for the nTOF facility, with the majority originating from the transition energy crossing. As well as...
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Ihar Lobach (Brookhaven National Laboratory)20/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
The Electron-Ion Collider (EIC) Beam Accumulator Ring (BAR) is crucial for polarized electron charge accumulation prior to injection into the Rapid Cycling Synchrotron (RCS). The preliminary BAR lattice, based on the NSLS VUV ring, utilized a lattice with 4 Double-Bend Achromat (DBA) cells. This work details the optimization effort to transition to a more compact design with 2 Multi-Bend...
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Konstantinos Paraschou (Deutsches Elektronen-Synchrotron DESY)20/05/2026, 16:00MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsPoster Presentation
As is typical for a design of a 4th generation light source, that of PETRA IV includes strong quadrupolar and sextupolar magnets which makes the beam dynamics of the storage ring sensitive to magnetic field imperfections. In particular, we show that field imperfections in the quadrupoles can drive non-linear resonances which can limit the efficiency of the top-up injection scheme in PETRA IV...
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Mr Corey Lehmann (Optimal Operations)20/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
Recent advancements in AI and Machine Learning capabilities have shown potential for improving operations at accelerator facilities, but require significant infrastructure changes to take full advantage of. Optimal Operations (OptOps) is an open-source suite of software being developed for AI-assisted operation and support of particle accelerator facilities. A modular set of tools have been...
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Dr Todd Satogata (Thomas Jefferson National Accelerator Facility)20/05/2026, 16:00MC1.T12: Colliders: Beam Injection/Extraction and TransportPoster Presentation
A dedicated electron transfer line from Rapid Cycling Synchrotron (RCS) to Electron Storage Ring (ESR), referred to as the RTE line has been designed for the Electron-Ion Collider (EIC). The beamline follows a straight-line geometry, with a length of 133 m, and is consists with two matching sections and a FODO section for beam diagnostics. Imperfections with magnet alignments introduce orbit...
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Rama Calaga (European Organization for Nuclear Research)20/05/2026, 16:00MC1.A01: Hadron CollidersPoster Presentation
Limitations in RF power at the injection plateau of the Large Hadron Collider (LHC) have been a major concern for the High-Luminosity (HL) LHC era. The increased bunch charge requires more RF power to compensate beam loading. A higher RF voltage at the injection plateau is moreover vital for both the RF capture and to counteract particle leakage from the buckets. The projected RF power with...
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Dr Mohammed Ben Abdillah (Université Paris-Saclay, CNRS/IN2P3, IJCLab)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
PERLE is an Energy Recovery Linac (ERL) that will be built at the IJCLab in Orsay. It will be the first multiturn ERL with the ambition to reach a beam power of 5 MW. Diagnostics are a key element for the functioning of PERLE, an overview of these diagnostics is discussed. The article focuses on the design and the operation of the diagnostics for PERLE injector. Finally, the article presents...
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Kip Bishofberger (Los Alamos National Laboratory)20/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
The LANSCE Accelerator Modernization Project (LAMP) will replace the front-end of the 50-year-old LANSCE accelerator, specifically to maintain beam delivery to all user stations while improving beam availability and reliability. We present an overview of the current LAMP conceptual design, including requirements, beam physics results, design decisions, and key component capabilities.
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Jilei Sun (Paul Scherrer Institute)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationInvited poster
The High Intensity Proton Accelerator (HIPA) at the Paul Scherrer Institute (PSI) delivers a continuous-wave (CW) proton beam at a frequency of 50.63 MHz, with currents up to 2.2 mA and a maximum energy of 590 MeV. The beam is successively directed to two meson production targets before reaching the spallation target.
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To monitor key beam parameters, various diagnostics based on the RF beam... -
Christian Goffing (European Organization for Nuclear Research)20/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
The Future electron-positron Circular Collider (FCC-ee) is a proposed lepton collider for high-energy particle physics succeeding the High-Luminosity Large Hadron Collider (HL-LHC). Its ambitious design goals demand excellent orbit and optics control and, therefore, set strict limits on alignment tolerances. Beam-based alignment (BBA) is used to relax the mechanical alignment tolerances by...
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Tatiana Pieloni (École Polytechnique Fédérale de Lausanne)20/05/2026, 16:00MC5.D12: Electron Cloud and Trapped Ion EffectsPoster Presentation
The buildup of electron clouds (EC) within the beam chamber limits machine performance by causing heating, beam instabilities, and other undesirable effects. Macroparticle simulations show that EC density can be modelled as a smooth curve with superimposed oscillations of a frequency corresponding to the beam bunch spacing. The saturation density and rate of electron cloud buildup can be...
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Yuri Batygin (Los Alamos National Laboratory)20/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
The proposed 100 MeV injector* is designed to renovate LANSCE accelerator facility by replacing the 750-keV Cockcroft-Walton injectors, supporting its unique function of delivering multiple, simultaneous beam flavors to several targets. Accelerating multiple beam types in a single RFQ at LANSCE restricts the ability to optimally tune acceleration and focusing due to inherent differences in...
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Dr John Heron (European Organization for Nuclear Research)20/05/2026, 16:00MC6.T22: Reliability, OperabilityPoster Presentation
The Future Circular Electron-Positron Collider (FCC-ee) is CERN’s leading proposal for the next generation of energy-frontier particle accelerators. At 91 km, it is ambitious in size, complexity and technical objectives. Availability is a significant challenge. Rising to this ambition requires a coordinated availability-driven design strategy. Three broad objectives are identified: (1) R\&D...
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Dimitre Dimitrov (Los Alamos National Laboratory)20/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
The Los Alamos Neutron Science Center (LANSCE) accelerator delivers different beams to multiple experimental stations simultaneously. These beams have different intensity and time structure. The LANSCE Accelerator Modernization Project (LAMP) seeks to upgrade the technology in the front-end while preserving the unique capabilities of LANSCE. LAMP seeks to replace the two 750-keV...
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Felipe Donoso (Karlsruhe Institute of Technology)20/05/2026, 16:00MC5.D11: Code Developments and Simulation TechniquesPoster Presentation
This study presents the first experimental application of longitudinal phase space tomography constrained by the Vlasov–Fokker–Planck equation (VFPE) using electro-optical spectral decoding (EOSD) diagnostics at the Karlsruhe Research Accelerator (KARA). The EOSD measurements are modeled as the convolution of the system’s impulse response with the charge density profile at the time of...
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Alexander Klemps (Hamburg University of Technology)20/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
We present a beam dynamics study aimed at characterizing and optimizing the transverse emittance of electron bunches in a photoinjector, motivated by the performance requirements of Free-Electron Lasers. The study is conducted using the accelerator configuration of the Photo Injector Test Facility at DESY in Zeuthen (PITZ), with the overarching goal of developing emittance optimization...
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Shaun Preston (University of Oxford, John Adams Institute for Accelerator Science, Diamond Light Source)20/05/2026, 16:00MC6.T33: Online Modelling and Software ToolsPoster Presentation
Development shifts on accelerators are usually time-constrained and infrequent. Meanwhile, control room PCs are not designed for scrappy R\&D, and maintaining multiple workflows with python scripts is prone to error. GUI apps have been successfully deployed and used in the past to perform optimisation at accelerator facilities. However, bookkeeping can become difficult in complex tasks....
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Francisco Javier Diaz Ferreira (European Organization for Nuclear Research)20/05/2026, 16:00MC6.T27: Instrumentation: Low Level RFPoster Presentation
The CERN Proton Synchrotron (PS) Low Level RF (LLRF) system is composed of cavity controllers, which regulate the field in the cavities, and a beam control, in charge of maintaining the required longitudinal beam specifications and managing the injection and extraction processes. The current beam control system, implemented using mainly analogue electronics in NIM and VME formats, is set to be...
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Evgenya Simakov (Los Alamos National Laboratory)20/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
We report the plans for testing a four-cell C-band (5.712 GHz) normal conducting radiofrequency (RF) accelerator cavity at liquid-nitrogen temperature under high accelerating gradient, being prototyped and proposed for the booster linear accelerator (linac) upgrade for the proton radiography (pRad) facility at Los Alamos National Laboratory. Operating RF structures at cryogenic temperature...
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Erdong Wang (Brookhaven National Laboratory)20/05/2026, 16:00MC1.A30: Colliders: Polarized beamsPoster Presentation
To mitigate beam instabilities associated with low magnetic fields, the Rapid Cycling Synchrotron (RCS) for EIC has been redesigned to operate with a higher injection energy of 750 MeV, accepting only one bunch at a time and accelerating it immediately to collision energy. As a result, the electron pre-injector must also be updated to supply an appropriately matched beam. In the latest...
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Xing Yang (University of Science and Technology of China)20/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
The online optimization and debugging of particle accelerator devices have always been a challenging task. Traditional manual debugging is time-consuming and labor-intensive, and there is a phenomenon of slow drift in the machine's operating state after debugging, requiring experts to repeatedly debug. With the improvement of computing power, machine learning has developed rapidly in recent...
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Giuseppe Scarantino (Istituto Nazionale di Fisica Nucleare, Laboratori Acceleratori e Superconduttività Applicata)20/05/2026, 16:00MC1.A09: Muon Accelerators, Neutrino Factories, Muon CollidersPoster Presentation
The rectilinear 6D cooling channel is a key element of the Muon Collider baseline, enabling the large emittance reduction required before acceleration. The Muon Collider Cooling Demonstrator aims to validate, at engineering scale and in relevant conditions, the integration of a single B5-like cooling cell. This paper presents the preliminary design of the Cooling Cell, developed within the...
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Nicolas Mounet (European Organization for Nuclear Research)20/05/2026, 16:00MC1.A01: Hadron CollidersInvited poster
One of the main drivers of integrated luminosity production in the High-Luminosity LHC (HL-LHC) era is the bunch intensity, expected to reach $2.3\times10^{11}$~protons per bunch at injection compared to the maximum $1.8\times10^{11}$ achieved in Run~3 operation. Such high intensities bring significant challenges, in particular localized beam induced heating due to impedance and the associated...
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Siobhan Alden (John Adams Institute, Royal Holloway University of London)20/05/2026, 16:00MC5.D11: Code Developments and Simulation TechniquesPoster Presentation
Beam Delivery Simulation (BDSIM) is a Monte Carlo program (written in C++ ) that creates a 3D radiation transport model designed for the simulation of accelerators and beamline modelling. BDSIM uses Geant4 for precise particle-matter interactions combined with particle-tracking through 3D geometries of accelerators and their environments. All particle species are tracked, allowing for studies...
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Silvia Verdu-Andres (Brookhaven National Laboratory)20/05/2026, 16:00MC1.A04: Colliders: Circular Accelerators and Storage RingsPoster Presentation
The Electron-Ion Collider (EIC) under construction at Brookhaven National Laboratory (BNL) is being developed in partnership with DOE’s Thomas Jefferson National Accelerator Facility. The EIC will deliver high-luminosity, variable center-of-mass energy collisions of highly polarized electron beams with highly polarized proton beams and ion beams. RF Systems for the EIC provide a variety of...
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Xing Rao (Facility for Rare Isotope Beams)20/05/2026, 16:00MC4.A21: Hadron accelerators: Secondary BeamsPoster Presentation
A variable wedge system is being developed for the FRIB-Advanced Rare Isotope Separator (ARIS) facility to provide flexible control of beam energy loss. This research evaluates two parallel strategies: a multi-material six-piece solid wedge system and a liquid-filled wedge system. For the solid wedge, the control model and optimization algorithms have been developed and verified, with...
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Jaroslaw Szumega (European Organization for Nuclear Research, Mines Paris, PSL University), Federico Ravotti (European Organization for Nuclear Research)20/05/2026, 16:00MC6.T33: Online Modelling and Software ToolsPoster Presentation
The IRRAD Proton Facility, located on T8 beamline at CERN PS East Hall, is an experimental infrastructure hosting irradiation tests and experiments of various nature. It focuses on the development of equipment and electronics for High-Energy Physics (HEP) experiments.
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Over the years of operation, multiple data-management systems were designed and implemented to operate the facility and... -
Felipe Donoso (Karlsruhe Institute of Technology)20/05/2026, 16:00MC6.T33: Online Modelling and Software ToolsPoster Presentation
Modern accelerator facilities generate heterogeneous data from diagnostics, sensors and simulations, making it difficult to manage, reproduce, and contextualize results as software and models evolve. While FAIR principles (Findable, Accessible, Interoperable, Reusable) are increasingly applied to research data, the iterative development of scientific software, with its rich metadata and...
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Elaf Musa (Deutsches Elektronen-Synchrotron DESY)20/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
We present a newly developed Python-based tool implementing the Linear Optics from Closed Orbits (LOCO) method. The tool provides a fast and flexible framework for lattice-parameter fitting and linear-optics correction in storage rings. Experimental validation at PETRA III and ESRF-EBS demonstrates its robustness and accuracy for optics correction in machine operation, as well as its use as a...
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Mrs Milena Yazichyan (Center for the Advancement of Natural Discoveries using Light Emission)20/05/2026, 16:00MC6.T04: Accelerator/Storage Ring Control SystemsPoster Presentation
AREAL linear accelerator constructed in Yerevan, Armenia, is designed to generate low-emittance, ultra-short electron beam pulses to enable advanced research in novel accelerator technologies, advanced coherent radiation sources, and dynamics of atomic and molecular processes.
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This paper presents an overview of the complex Python-based control system developed for the AREAL accelerator. It... -
Stewart Boogert (Cockcroft Institute)20/05/2026, 16:00MC5.D11: Code Developments and Simulation TechniquesPoster Presentation
FLUKA simulations of beam lines are essential for understanding different aspects of accelerators, including beam losses, backgrounds, activation, and shielding. Creating a beam line simulation using FLUKA is a time-consuming and error-prone process. This paper describes updates to pyflubl (Python FLUKA beam-line), a set of Python tools
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which can create a FLUKA simulation using a Python... -
Cornelia Marion Schmitt (European Organization for Nuclear Research)20/05/2026, 16:00MC6.T22: Reliability, OperabilityPoster Presentation
To assure all deliverables for the Long Shutdown 3 (LS3) will be met, the Accelerator Beam Transfer (ABT) group has launched a coordinated initiative to strengthen Quality Management (QM), Project Management (PM), and Enterprise Asset Management (EAM). A harmonized QM framework and enhanced Non-Conformity Report (NCR) process enable early anomaly detection and structured follow-up across...
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Dr Sven Zander (Deutsches Elektronen-Synchrotron DESY)20/05/2026, 16:00MC6.T18: Instrumentation: Radiation Monitoring and SafetyPoster Presentation
DESY draws on more than six decades of experience in the development, operation, and radiation protection of large-scale user facilities such as PETRA III, FLASH, and the European XFEL. In parallel, the investigation of novel accelerator technologies for future applications has become a key focus. Laser-plasma acceleration (LPA) offers the potential for highly compact, high-gradient sources,...
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Jean-Baptiste PRUVOST (Synchrotron soleil)20/05/2026, 16:00MC6.T18: Instrumentation: Radiation Monitoring and SafetyPoster Presentation
The SOLEIL II storage ring upgrade project aims at reducing drastically the horizontal emittance of the electron beam from 4 nm.rad for the present ring down to 80 pm.rad for the SOLEIL II new 4th generation storage ring. It is based on the replacement of the present double bend achromat by a mixed multi bend achromat, the so-called 4BA-7BA lattice [*] and a general use of permanent magnets...
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Julian Melbinger (TU Wien, CIVIDEC Instrumentation (Austria))20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Diamond detectors are widely used in harsh radiation environments due to their intrinsic radiation hardness. At high particle fluxes, single-particle measurements in counting mode are challenging because of pile-up, requiring a transition to current measurement. In this study, a 500 MBq $^{90}$Sr beta source was used to investigate the limitations of the counting mode and the transition to...
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Niccolò La Rosa (University of Catania, STLab s.r.l. (Italy)), Massimo Camarda (STLab s.r.l. (Italy), SenSiC GmbH (Switzerland))20/05/2026, 16:00MC6.T05: Beam Feedback SystemsPoster Presentation
Beam stability is essential in beamline experiments, where vibrations, thermal drifts, misalignment of the optical components (mirrors, monochromators), beam energy variations and electronic noise can influence the beam position leading to non-negligible drifts, degrading the quality of the measurements, as observed during X-Ray Absorption Spectroscopy (XAS) experiments. To address these...
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Sergei Sherstiuk (Technical University of Darmstadt)20/05/2026, 16:00MC5.D08: High Intensity in Linear Accelerators Space Charge, HalosPoster Presentation
Real-time measurement and control of the longitudinal momentum spread during the beam transfer from the transfer channel (TK) into the SIS18 synchrotron is needed for the low-loss high-intensity operation. For this purpose, two Feschenko-type beam shape monitors (BSM) will be installed in TK. This will enable the single-pass measurements and real-time reconstruction. Simulations using a...
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Yoichi Sato (Japan Proton Accelerator Research Complex)20/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
The Japan Proton Accelerator Complex (J-PARC) linac delivers the negative hydrogen (H-) ion beam with a peak current of 50 mA to the Material and Life science experimental Facility (MLF) and the Main Ring synchrotron (MR) through the Rapid Cycling Synchrotron (RCS).
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The Radio-Frequency Quadrupole linac Test Stand (RFQ-TS) in the J-PARC linac building is utilized for the evaluation of the beam... -
Dr Salvador Sosa Guitron (Los Alamos National Laboratory)20/05/2026, 16:00MC4.A17: Hadron accelerators: High Intensity AcceleratorsPoster Presentation
Linear Accelerator Modernization Project (LAMP) at Los Alamos National Laboratory is under development. One of the significant parts of this project is replacement of the existing 50-years old Drift Tubes Linac (DTL). The perspective DTL will inherit the existing DTL species, namely protons and H- ions, as week as frequency of 201.25 MHz and the output energy of 100 MeV. The input energy of...
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Michela Neroni (European Organization for Nuclear Research)20/05/2026, 16:00MC5.D04: Beam Coupling Impedance Theory, Simulations, Measurements, Code DevelopmentPoster Presentation
In the High-Luminosity LHC (HL-LHC) era, increased beam intensities and brightness impose stringent requirements on the beam-coupling impedance of accelerator components. This contribution summarizes recent studies on impedance mitigation for several new devices to be installed in the framework of the HL-LHC upgrades, illustrating design optimizations based on results from electromagnetic...
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Tatiana Pieloni (École Polytechnique Fédérale de Lausanne)20/05/2026, 16:00MC5.D04: Beam Coupling Impedance Theory, Simulations, Measurements, Code DevelopmentPoster Presentation
A flexible simulation scheme has been developed as a high-level Python wrapper around RF-Track to enable fully self-consistent simulations of recirculating and energy-recovery linear accelerators (ERLs). This framework dynamically routes multi-bunch beams through multiple beamlines based on their evolving phase-space parameters and is integrated directly into the RF-Track tracking workflow....
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Hitomi Ikeda (High Energy Accelerator Research Organization)20/05/2026, 16:00MC1.A02: Lepton Circular CollidersPoster Presentation
Sudden beam loss (SBL) is one of the major problems facing SuperKEKB, and various efforts have been made to solve it. SBL is a beam loss event in which a signifi-cant percentage of the beam current is lost in an instant. Beam loss begins within 10 microseconds, the equivalent of one revolution, and as a result, tens of percent of the total charge is lost in a few revolutions before the beam is...
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Simon Hirlaender (University of Salzburg)20/05/2026, 16:00MC6.T04: Accelerator/Storage Ring Control SystemsPoster Presentation
Most accelerator control systems assume that the effect of an action can be evaluated locally and immediately. While
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greedy approaches work in near-linear regimes and Bayesian Optimisation (BO) is now standard for black-box tuning,
both are essentially static optimisers and struggle in dynamic tasks with delayed consequences, where even adaptive
BO remains time-myopic and lacks explicit... -
Yangho Lee (Institute for Basic Science)20/05/2026, 16:00MC1.A08: Colliders: Linear AcceleratorsPoster Presentation
This paper presents a case study on the reinstallation of heavy weight cryomodule (HWR-B #11, HWR-A #9 & #13) for the SCL3 beamline maintenance. Our HWR-B combines a cryogenic module with a warm section assembled with a quadrupole magnet and a vacuum chamber, with a total weight exceeding 12.5 tons (HWR-A over 7.0 tons). After each annual beam commissioning, some low-efficiency modules were...
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Lukas Felsberger (European Organization for Nuclear Research)20/05/2026, 16:00MC6.T22: Reliability, OperabilityPoster Presentation
The Quench Detection Systems (QDS) are essential for protecting the LHC superconducting magnets and circuits during quench events. During the upcoming Long Shutdown 3 (2026-2030), several of these systems will undergo major renovation, including those for Individually Powered Quadrupole and Dipole magnets and the Inner Triplets. To secure the continued high performance of machine protection...
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Dr John Lewellen (Los Alamos National Laboratory)20/05/2026, 16:00MC4.A14: Neutron Spallation FacilitiesPoster Presentation
The Los Alamos Neutron Science Center (LANSCE) consists of an 800-MeV dual-species (H+ and H-) accelerator serving five separate user facilities, each of which can concurrently receive unique beam delivery patterns tailored for their specific requirements. The LANSCE Accelerator Modernization Project (LAMP) will replace the front-end of the 50-year-old LANSCE accelerator, from ion sources...
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Xing Yang (University of Science and Technology of China)20/05/2026, 16:00MC6.T05: Beam Feedback SystemsPoster Presentation
Hefei Advanced Light Facility (HALF) Fast Orbit Feedback (FOFB) system uses 80 fast corrector magnets to stabilize beam orbit measured at 80 Beam Position Monitors (BPM). In order to achieve a closed-loop bandwidth of 500Hz, the system operates with a correction rate of approximately 20kHz. A distributed fast orbit feedback system is designed to control the instability of the beam orbit in...
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Carmelo Barbagallo (European Organization for Nuclear Research)20/05/2026, 16:00MC1.A09: Muon Accelerators, Neutrino Factories, Muon CollidersPoster Presentation
The rectilinear cooling channel of a muon collider requires high-gradient normal-conducting RF cavities to enable ionization cooling, which is essential to achieve high luminosity. Reaching this performance demands bunches containing $\sim 10^{12}$ muons. At these intensities, beam-induced wakefields can cause significant beam loading, reducing the accelerating gradient and affecting beam...
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Dr Frédéric Bouly (Laboratoire de Physique Subatomique et de Cosmologie)20/05/2026, 16:00MC6.T22: Reliability, OperabilityPoster Presentation
The PERLE project aims to construct a novel high power Energy Recovery Linac (ERL) demonstrator (5 MW) for developing and applying the energy recovery technique in a multi-turn configuration. In its final layout the machine will operate in a three turn mode, delivering a 20 mA electron beam at 250 MeV. These challenging parameters make PERLE a unique multi turn ERL facility operating in an...
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Jindong Liu (Chinese Academy of Sciences)20/05/2026, 16:00MC1.A08: Colliders: Linear AcceleratorsPoster Presentation
To enhance the energy efficiency and cost-effectiveness of large-scale particle accelerator facilities, energy recovery has emerged as a key research direction. From the perspective of radio frequency (RF) power sources, this article reports on the latest research progress in this field at IHEP. First, the fundamental principles of energy recovery based on RF power sources are elaborated,...
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Max Herrmann (Deutsches Elektronen-Synchrotron DESY)20/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
The superconducting linac at the European X-ray Free-Electron Laser (EuXFEL) in Hamburg Germany has been operating at 2 K since its initial cool-down in 2016. After nearly ten years of user operation at cryogenic temperature, the linac was warmed up for the first time in summer 2025 for its first long maintenance period and successfully cooled down again in December 2025. This marks the first...
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Dr Frédéric Bouly (Laboratoire de Physique Subatomique et de Cosmologie)20/05/2026, 16:00MC6.T27: Instrumentation: Low Level RFPoster Presentation
The PERLE project consists of a 5MW at 250 MeV Energy Recovery Linac (ERL) demonstrator, with the accelerating cavities operating at 801.58MHz and 2K. The superconducting cavities needs to be regulated in terms of amplitude, phase and frequency due to perturbations such as microphonics, Lorentz forces and Beam loading. New developments dedicated to PERLE are in progress in order to achieve the...
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Nirav Joshi (Science and Technology Facilities Council, ASTeC, STFC Daresbury Laboratory)20/05/2026, 16:00MC6.T04: Accelerator/Storage Ring Control SystemsPoster Presentation
The CLARA facility has been upgraded in Phase-II to deliver electron bunches of up to 250 MeV using a standing wave photo-injector gun, four linac structures and a fourth harmonic lineariser cavity. A transverse deflecting cavity (TDC) is also employed to measure key bunch parameters. To support reliable and efficient operation, a comprehensive RF Application Programming Interface (RF-API) has...
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Kiel Hock (Brookhaven National Laboratory)20/05/2026, 16:00MC1.A01: Hadron CollidersPoster Presentation
The Relativistic Heavy Ion Collider (RHIC) Run 25 operations consisted of collisions of 100 GeV/u Au beams and a short 100 GeV polarized proton run for the STAR and sPHENIX experiments. A magnet wiring short resulting from the Run 23 failure repair resulted in a 2 month delay to the start of the run. Machine optimizations produced the highest ion performance in the history of the complex but...
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Michiko Minty (Brookhaven National Laboratory)20/05/2026, 16:00MC1.A01: Hadron CollidersPoster Presentation
A failure of the RHIC superconducting circuit occurred at the end of Run 23 and led to an unplanned shutdown and extensive work to replace a damaged superconducting dipole magnet. After an in-depth investigation, the failure was determined to have originated from an electrical breakdown within a superconducting current lead. The short-circuit through the arc led to large spilling of current...
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Shaun Preston (John Adams Institute for Accelerator Science, Diamond Light Source, University of Oxford)20/05/2026, 16:00MC6.T33: Online Modelling and Software ToolsPoster Presentation
It is desirable to reduce the convergence time of optimisers used by large accelerator facilities to maximise user time. A popular technique is Bayesian optimisation which typically use Gaussian Processes (GP) to construct a surrogate of the real machine response to decision variables. GPs belong to a class of algorithms called kernel methods that assign pairwise similarities to all data...
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Yoshihiro Saito (The Graduate University for Advanced Studies, SOKENDAI, High Energy Accelerator Research Organization)20/05/2026, 16:00MC4.A04: Hadron accelerators: Circular AcceleratorsPoster Presentation
In the main ring (MR) at the Japan proton accelerator research complex (J-PARC), beam-based alignment (BBA) is essential for precise calibration of beam position monitors relative to quadrupole magnet centers. With the upgrade of the beam position monitor (BPM) system for better precision scheduled in this summer, frequent and accurate BBA will become increasingly important to optics and orbit...
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Rahul Singh (GSI Helmholtz Centre for Heavy Ion Research)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
A proof of principle implementation in software-defined radio (SDR) for signal processing at multiple harmonics of the revolution frequency for intensity measurement applications is presented. Two off-the-shelf SDR front ends, USRP X310 and ADALM2000, are combined with the GNU Radio framework to provide real-time signal filtering. A maximum signal processing rate of 5 MSa/s is achieved, and...
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Christian Goffing (European Organization for Nuclear Research)20/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
Designed to succeed the High-Luminosity Large Hadron Collider (HL-LHC), the Future electron-positron Circular Collider (FCC-ee) is a proposed next-generation collider focused on lepton collisions for high-energy physics experiments. Achieving ambitious design goals requires excellent control of the orbit and optics. Off-centre beam passage through the sextupoles results in additional focusing...
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Kyosuke Adachi (Japan Atomic Energy Agency)20/05/2026, 16:00MC4.A17: Hadron accelerators: High Intensity AcceleratorsPoster Presentation
The 3GeV Rapid-Cycling Synchrotron (RCS) at J-PARC supplies the proton beam to the Materials and Life Science Experimental Facility (MLF), where it is utilized for the production of secondary particle beams such as muons and neutrons. Secondary particle beams are used in experiments in condensed matter physics, polymer chemistry, biophysics, and other fields. Experiments requiring high time...
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JUBA TAMAZIRT (Centre National de la Recherche Scientifique)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
This work focuses on the energy calibration of the FCC-ee and aims to develop precise techniques for ensuring accurate beam energy measurements, essential for improving the precision of electroweak parameter determinations. To do so, resonant depolarisation technique will be employed, requiring the continuous operation of a depolariser and Compton polarimeters for both electrons and positrons...
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Pascal Reinhart (Technical University of Darmstadt)20/05/2026, 16:00MC5.D04: Beam Coupling Impedance Theory, Simulations, Measurements, Code DevelopmentPoster Presentation
In accelerators, collimators are used to shape the beam
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and protect the machine against damage. They have however
an adverse effect on the beam quality. We present a
trapped-mode analysis of the new collimators for PETRA IV
and their impact on beam dynamics. Wakefield and eigenmode
simulations are used to determine the beam-coupling
impedance of the collimators. From that, the quality... -
Ryotaro Muto (High Energy Accelerator Research Organization)20/05/2026, 16:00MC4.T12: Hadron accelerators: Beam Injection/Extraction and TransportPoster Presentation
Reduction of beam loss at the Electrostatic Septum (ESS) during the slow extraction process is one of the major challenges for the J-PARC Main Ring (MR) slow extraction operation, which aims to increase beam power beyond 150 kW. Researchers at the CERN SPS have reported that beam loss at the ESS can be effectively reduced by installing a bent silicon crystal upstream of the ESS to utilize its...
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Erin L. Flannigan (Science and Technology Facilities Council)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Strong space charge effects in pulsed, high-intensity hydrogen ion beams lead to transport losses in the Low Energy Beam Transport (LEBT) of particle accelerators. The space charge compensation (SCC) process lowers the potential of the beam by trapping compensating particles produced by beam-induced ionisation of residual gas. Significant beam losses during compensation build-up necessitate...
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Erdong Wang (Brookhaven National Laboratory)20/05/2026, 16:00MC1.A30: Colliders: Polarized beamsPoster Presentation
We are designing a high-charge, high-polarization preinjector for the EIC. Employing a Wien filter as the spin rotator immediately after the gun offers multiple advantages over the traditional dipole–solenoid spin rotator placed after the linac. However, this represents the first attempt to operate a Wien filter in a strong–space-charge environment. The energy spread and space-charge forces...
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Patrick O'Shea (University of Maryland, College Park)20/05/2026, 16:00MC1.A11: Colliders: Beam CoolingPoster Presentation
Idealized physics models of charged-particle beam transport predict beam distribution second moments and envelopes, but not the detailed beam structure. We combine experiment and simulation to explore the interplay of space charge and angular momentum with realistic beam distributions in a low-energy transport system. Our realistic phase-space distributions derive from direct experimental...
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Stephan Reimann (GSI Helmholtz Centre for Heavy Ion Research, Facility for Antiproton and Ion Research)20/05/2026, 16:00MC6.T04: Accelerator/Storage Ring Control SystemsPoster Presentation
The increasing complexity of particle accelerators and the growing demand for operational efficiency have intensified the focus on automation in accelerator control systems. However, there is still a lack of a common language to describe and compare the level of automation across different facilities. This article presents a generic classification scheme for accelerator automation, defining...
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Oscar Blanco-García (ALBA Synchrotron (Spain))20/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
A 5BA lattice with an emittance of 200 pm*rad at 3 GeV and a circumference of 268.8 m is under design for ALBA-II. The injection is performed off-axis in a straight section only 4.7 m long with a single non-linear kicker needing a horizontal dynamic aperture larger than 6 mm. An optics of the injection section with asymmetric waists of the beta functions, low horizontal beta at the septum...
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Zhe Duan (Institute of High Energy Physics)20/05/2026, 16:00MC1.A30: Colliders: Polarized beamsPoster Presentation
A laser Compton polarimeter is being developed at the Beijing Electron Positron Collider (BEPCII) for non-destructive diagnostics of transverse electron beam polarization. The project reuses a dismantled wiggler
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beamline and experimental hutch to transport a circularly polarized 532 nm pulsed laser beam to the electron ring and to guide the backscattered photons to a detector in the hutch.... -
Raphaël Roux (Université Paris-Saclay, CNRS/IN2P3, IJCLab)20/05/2026, 16:00MC5.D08: High Intensity in Linear Accelerators Space Charge, HalosPoster Presentation
The ERL accelerator called PERLE is under construction on the campus of Paris-Saclay university. PERLE is an Energy Recovery Linac which aims to reach 250 MeV 20 mA cw, namely 5 MW of beam power. First brick of this accelerator is the injector whom the main components are the DC photo-injector and a booster holding 4 superconducting cavities. This paper will give an overview of the injector’s...
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Ivan Karpov (European Organization for Nuclear Research)20/05/2026, 16:00MC5.D05: Coherent and Incoherent Instabilities Theory, Simulations, Code DevelopmentPoster Presentation
Beam dynamics studies, and in particular detailed macroparticle simulations, are challenging for high-energy hadron synchrotrons due to the large number of circulating bunches. The High-Luminosity Large Hadron Collider (HL-LHC) will accelerate beams with about twice the initial LHC design intensity. It will also feature additional installations such as the crab cavities, which increase the...
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Elene Kravishvili (Université Paris-Saclay)20/05/2026, 16:00MC6.T05: Beam Feedback SystemsPoster Presentation
In upgrading the present SOLEIL ring, it has been decided to introduce longitudinal bunch-by-bunch feedback (LFB) in addition to the already existing transverse feedback (TFB), because studies indicate that the new normal conducting fundamental RF cavities may excite longitudinal coupled-bunch instabilities (LCBI) due to their higher-order-modes (HOMs). SOLEIL II also plans to use...
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730. Studies of unusual pickup geometries for the arc beam position monitors of the FCC-ee (WEP6090)Emily Howling (John Adams Institute)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The electron-positron Future Circular Collider (FCC-ee) has challenging requirements for beam instrumentation, including the need for thousands of high-resolution beam position monitors (BPMs) presenting low impedance to the circulating beam. This paper presents studies of different unusual pickup geometries including elliptical, asymmetric and retracted buttons. The impact of the different...
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Cheng-Hsu Nee (University of Wisconsin–Madison)20/05/2026, 16:00MC1.A09: Muon Accelerators, Neutrino Factories, Muon CollidersPoster Presentation
We present optimization studies for a site-specific muon production and transport demonstrator for the Muon Collider planned at Fermilab. The design considers proton beams at 0.8, 8, and 120 GeV available from Fermilab accelerator facilities. The optimization work focuses on the performance of the target system and captures solenoid, a dedicated pion decay channel, a momentum selection...
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Dario Giove (Istituto Nazionale di Fisica Nucleare)20/05/2026, 16:00MC1.A09: Muon Accelerators, Neutrino Factories, Muon CollidersPoster Presentation
The Muon Cooling Complex is a crucial component of the future high-energy Muon Collider, where the ionization cooling technique is employed to reduce muon beam emittance by several orders of magnitude.
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The proposed cooling scheme requires the cooperation in the same geometric section of static magnetic fields and radiofrequency electric fields of extremely high values. This feature... -
Dario Giove (Istituto Nazionale di Fisica Nucleare, Laboratori Acceleratori e Superconduttività Applicata)20/05/2026, 16:00MC1.A09: Muon Accelerators, Neutrino Factories, Muon CollidersPoster Presentation
One of the essential features of the normally conductive RF cavities for the Muon Collider is the presence of thin windows that cover the irises of the cavities.
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This feature addresses the need to increase the on-axis accelerating fields of the cavities and simplify their design.
This paper summarizes the work done to date, both in terms of materials and geometric conformations, and in terms... -
Tianlong He (University of Science and Technology of China)20/05/2026, 16:00MC5.D05: Coherent and Incoherent Instabilities Theory, Simulations, Code DevelopmentPoster Presentation
The Super Tau-Charm Facility (STCF), a next-generation electron-positron collider in China, is designed to achieve a peak luminosity above 0.5 × 10³⁵ cm⁻²s⁻¹ at 4 GeV in the center-of-mass frame. This paper investigates beam instability issues for the STCF, with the aim of identifying and mitigating risks from coupling impedance. Our work analyzes key contributors such as coherent synchrotron...
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Yanliang Han (Institute of High Energy Physics)20/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
The China Spallation Neutron Source (CSNS) is currently undergoing an upgrade to increase its beam power from 100 kW to 500 kW. As part of this enhancement, the linear accelerator's beam energy will be boosted from 80 MeV to 300 MeV, and the beam current will be raised from 10 mA to 40 mA. To achieve the higher beam energy, 52 superconducting cavities will be added following the drift tube...
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Alexis Ribet (Grand Accélérateur National d'Ions Lourds)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Non-interceptive online diagnostics are essential for monitoring ion sources, particularly during physics experiments. Optical emission spectroscopy, already used in other laboratories, has been tested at GANIL. The light emitted by the plasma is captured by a CCD camera placed behind a glass window aligned with the ion source and by an optical fiber connected to an optical spectrometer...
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Ana Guisao-Betancur (University of Liverpool, Cockcroft Institute)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Coherent transition radiation (CTR) has been widely used for developing diagnostics of particle beams due to its broadband spectrum, which provides information on the particle distribution, and its relatively simple experimental setup compared to other sources of coherent radiation. For short and ultrashort electron bunches, ps- to fs-long, methods such as CTR spectrometry and interferometry...
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Oliver Betteridge (Cockcroft Institute)20/05/2026, 16:00MC5.D03: Calculations of EM fields Theory and Code DevelopmentsPoster Presentation
A field-driven method is presented for synthesising multipolar transverse-electric cavities. Cylindrical standing-wave TE solutions are superimposed analytically, and the cavity surface is reconstructed by enforcing perfect-electric-conductor boundary conditions. The method produces closed hybrid cavity geometries whose modal content is validated against CST eigenmode simulations. Two examples...
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Jun Tamura (Japan Atomic Energy Agency)20/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
Japan Atomic Energy Agency (JAEA) has been proposing an accelerator-driven nuclear transmutation system (ADS). As a first step toward the practical design of the JAEA-ADS linac, we have been prototyping a low-beta (~0.2) single-spoke cavity. Fabrication of the prototype spoke cavity was finally completed in FY2024. We are currently working on surface preparation for a high-field cavity testing...
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Stuart Walker (Deutsches Elektronen-Synchrotron DESY)20/05/2026, 16:00MC6.T33: Online Modelling and Software ToolsPoster Presentation
Numerical beam dynamics simulation codes are essential for designing and studying particle accelerators, but their computational cost can make them unsuitable for online use and predictions during operations. The use of machine learning-based surrogate models can significantly reduce the required computational time whilst still providing an accurate prediction of the beam properties. In this...
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Prof. Xiaodong Yang (Institute of Modern Physics, Chinese Academy of Sciences)20/05/2026, 16:00MC4.A11: Hadron accelerators: Beam CoolingPoster Presentation
In the cooling storage ring, a low-temperature electron beam from the electron cooling device overlaps with a high-temperature ion beam in the storage ring. The overlap occurs at the same average velocity for a certain distance. Through Coulomb interaction, electrons absorb excess energy from ions. This reduces the transverse emittance and longitudinal momentum spread of the ion beam, and...
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Christoph Reinwald (Technical University of Darmstadt)20/05/2026, 16:00MC6.T05: Beam Feedback SystemsPoster Presentation
High-intensity operation of the new SIS100 synchrotron is expected to be sensitive to coupled and single-bunch instabilities *. To counter these effects, a Bunch-By-Bunch Longitudinal Feedback System is currently in development. Operating this feedback system during acceleration and for arbitrary revolution frequencies presents several challenges. Thereby, this article focuses on the timing...
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Svenja Kolbe (Ernst Abbe University of Applied Sciences Jena)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Cryogenic Current Comparators (CCC) with SQUID readout are used at GSI Darmstadt and the future FAIR facility for non-invasive measurements of low-intensity ion beams. The current resolution of the device depends strongly on the magnetic and electric disturbances from the surrounding environment, which also vary over time. This work systematically investigates the signal characteristics to...
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Adeel Amjad (Deutsches Elektronen-Synchrotron DESY)20/05/2026, 16:00MC6.T05: Beam Feedback SystemsPoster Presentation
A fast orbit feedback system is currently being developed for the upcoming PETRA IV at DESY Hamburg. The performance of the FOFB system depends mainly on the frequency response of the subsystems, i.e. the corrector magnets, power supplies, cables and vacuum chambers. A test bench is being developed for measuring the field quality of FOFB corrector magnets and system identification of all...
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Konstantinos Paraschou (Deutsches Elektronen-Synchrotron DESY)20/05/2026, 16:00MC5.D11: Code Developments and Simulation TechniquesPoster Presentation
The design of 4th generation synchrotron light sources employs such strong quadrupolar and sextupolar magnets, that the motion of electrons in the storage ring is extremely sensitive to the misalignment and the field imperfection of magnets. As a result, it has become common practice to simulate the steps followed during the commissioning of a light source to compare the sensitivity to...
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Martin Droba (Goethe University Frankfurt)20/05/2026, 16:00MC5.D12: Electron Cloud and Trapped Ion EffectsPoster Presentation
Experimental results of the beam transport through a Gabor lens system were not fully understood in the past. The measurement campaign presented at IPAC2013 will be considered as an example with an alternative explanation. Simulation results done by the TraceWin code will be presented and beam impact on the electron column discussed. Especially production of secondary electrons by an ion...
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Kiel Hock (Brookhaven National Laboratory)20/05/2026, 16:00MC4.A04: Hadron accelerators: Circular AcceleratorsPoster Presentation
To preserve polarization in the Alternating Gradient Synchrotron (AGS), two
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partial snakes are used to avoid both imperfection resonances and vertical in-
trinsic resonances. One of these partial snakes is superconducting and the other
is normal conducting, the cold and warm partial snakes. Simulations show that
adding an additional cold partial snake improves polarization transmission... -
Dr Armen Grigoryan (Center for the Advancement of Natural Discoveries using Light Emission, Yerevan State University)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The beam trace resulting from electron beam irradiation of glass plates can be photographed on the plates and the distribution of beam particles on the transversal plane can be obtained as a result of digital image processing, which can be used in the calculation of absorbed dose transversal profile and numerical modeling of beam interaction with the target in the irradiation experiments. The...
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Dr Daniel Winklehner (Massachusetts Institute of Technology)20/05/2026, 16:00MC4.A13: Hadron accelerators: CyclotronsPoster Presentation
The High-Current H2+ Cyclotrons (HCHC) were originally conceived for the IsoDAR experiment, which would place an intense accelerator-driven electron-antineutrino source near a high-resolution underground scintillator detector to enable precision beyond-standard-model searches (e.g., sterile neutrino oscillations). The HCHC design accelerates 5 mA of...
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Anna Alexander (Los Alamos National Laboratory)20/05/2026, 16:00MC4.T12: Hadron accelerators: Beam Injection/Extraction and TransportPoster Presentation
The LANSCE Accelerator Modernization Project (LAMP) will replace the front-end of the existing LANSCE accelerator, from ion sources through the end of the 100-MeV drift-tube linac. The RFQ test stand (RFQTS) currently consists of an H+ ion source, LEBT, and RFQ, but will be expanded to add an H- ion source and LEBT. It is intended as a flexible testing platform for technology maturation and...
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Gregory Dale (Los Alamos National Laboratory)20/05/2026, 16:00MC4.A14: Neutron Spallation FacilitiesPoster Presentation
The LANSCE accelerator has been in operation for more than 50 years, and many of the accelerator structures, such as the Cockcroft-Walton injectors and drift-tube linac tanks, are original. To address end-of-life concerns and position the facility for extended operation into the future, the LANSCE Accelerator Modernization Project (LAMP) encompasses replacement of the upstream portions of the...
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Dr Salvador Sosa Guitron (Los Alamos National Laboratory)20/05/2026, 16:00MC4.A17: Hadron accelerators: High Intensity AcceleratorsPoster Presentation
The Los Alamos Neutron Science Center (LANSCE) accelerator at Los Alamos National Laboratory delivers different beams to multiple experimental stations simultaneously. These beams have different intensity and time structure. The LANSCE Accelerator Modernization Project (LAMP) seeks to upgrade the technology in the front-end while preserving the unique capabilities of LANSCE. LAMP seeks to...
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Andrea Bellandi (Belgian Nuclear Research Centre)20/05/2026, 16:00MC6.T27: Instrumentation: Low Level RFPoster Presentation
The first 100 MeV stage of the MYRRHA superconducting RF linear accelerator is under construction in Mol, Belgium. The machine produce an instantaneous proton beam current of 4 mA and represents the first step toward the construction of the MYRRHA Accelerator-Driven System (ADS). Such a machine presents several technical challenges for the control of its RF cavities. First, the required field...
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Mr Benjamin Bolling (European Spallation Source, Lund University)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Beam Position Monitors (BPMs) are used as part of normal routines to measure the dipole component of a charged particle beam in order to determine its transverse position. However, BPMs are also sensitive to higher-order moments of the beam charge distribution, including the quadrupolar component, which provides access to the difference in horizontal and vertical beam RMS sizes. This work...
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Zhe Duan (Institute of High Energy Physics)20/05/2026, 16:00MC1.A08: Colliders: Linear AcceleratorsPoster Presentation
In theory, a 180° or 90° hybrid bridge can be used as a variable power divider and combiner. This study focuses on the related theoretical research, the Magic Tee and 3 dB bridge are selected as the required 180° and 90° hybrid bridges. Based on scattering matrix of the four-port microwave network, the relationship between the input and output amplitude and phase, the phase difference of the...
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Simona Bettoni (Paul Scherrer Institute)20/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
The FCC-ee injector design requires operation with relatively long, high-charge bunches, conditions that enhance the influence of transverse wakefields on beam dynamics. A critical aspect of the future electron–positron collider design is the mitigation of transverse beam jitter both along the FCC-ee linacs and at their exit. The most common approach to suppress such jitter is the...
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1476. Towards fast orbit correction: a modular and extensible global orbit feedback system (WEP6114)Amro Aljadaa (Synchrotron-Light for Experimental Science and Applications in the Middle East)20/05/2026, 16:00MC6.T05: Beam Feedback SystemsPoster Presentation
At SESAME, the orbit correction system was originally implemented in MATLAB and operated at a correction rate of 0.2 Hz. While adequate for initial deployment, this setup proved insufficient for production environments due to its limited speed and scalability. To address these shortcomings, a complete implementation was carried out in the C programming language, resulting in a...
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Adrian Menor de Onate (European Organization for Nuclear Research)20/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
Beam commissioning of slow extracted beams from the CERN Super Proton Synchrotron (SPS) to the North Area experimental targets requires trajectory control through multiple transfer lines using corrector magnets—a process that traditionally demands significant expert intervention. Previous work demonstrated the feasibility of applying reinforcement learning (RL) for automated trajectory...
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Ivan Morozov (Elettra-Sincrotrone Trieste S.C.p.A.)20/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
Accurate linear models of insertion devices (IDs) are essential for optics correction, coupling control, and feed-forward strategies in modern light sources. We present a systematic framework that builds a linear transverse symplectic parameterization, including leading-order chromatic effects, directly from Radia’s Runge–Kutta (RK) particle tracking. We compare the resulting matrices with...
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Fatima Basbous (GIP ARRONAX, Nantes Université)20/05/2026, 16:001MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
In the context of the operational monitoring of the ARRONAX C70XP cyclotron, our previous work addressed the limitations of the Isolation Forest (IF) algorithm in detecting local anomalies, particularly those occurring near the mean of normal data, due to its reliance on axis-parallel splits. To overcome this issue, we developed and validated a hybrid model combining an autoencoder and IF,...
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Dong-O Jeon (Institute for Basic Science)20/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
Tomographic phase space reconstruction method based on the beam dynamics code Travel is applied to the RAON linear accelerator in the LEBT and in the MEBT. Due to the low beam energy and the two dipoles in the LEBT, it matters to include the space charge effect and the second-order effects of dipoles. When compared with the Allison scanner emittance data in the LEBT, the phase space tomography...
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Dr Mark Johnson (Science and Technology Facilities Council, Cockcroft Institute)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
CLARA is a high-brightness electron beam facility at STFC Daresbury Laboratory, aiming to deliver ultra-short electron bunches to a wide range of user experiments. CLARA has recently resumed operations after a major upgrade, and is currently undergoing beam commissioning at its nominal energy (250 MeV) and bunch charge (250 pC). During commissioning, studies of the transverse beam dynamics...
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Maria Ünal (SOLARIS National Synchrotron Radiation Centre)20/05/2026, 16:00MC6.T05: Beam Feedback SystemsPoster Presentation
Precise control of betatron tune is essential for maintaining beam stability in modern synchrotron light sources. At the SOLARIS storage ring, tune perturbations induced by undulator gap and phase present a significant operational challenge. This study presents a method for local tune compensation during the gap and phase motion of Apple II type undulator, installed upstream of a dedicated...
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Harvey Stemmler (GSI Helmholtz Centre for Heavy Ion Research)20/05/2026, 16:00MC6.T33: Online Modelling and Software ToolsPoster Presentation
It is common practice during accelerator operation to continuously document all relevant machine states and activities. At GSI Helmholtz-Center for Heavy Ion Research, this is done using an electronic logbook (OLOG) developed in-house and adapted to the specific requirements of accelerator operations, allowing shift crews to record failure events, setup times, and other important information...
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Mr Siji Li (Institute of Modern Physics, Chinese Academy of Sciences)20/05/2026, 16:00MC4.T12: Hadron accelerators: Beam Injection/Extraction and TransportPoster Presentation
To meet the demand for high-intensity ion beams in FLASH radiotherapy and materials science, achieving millisecond-scale ultra-fast slow extraction from synchrotrons is a critical challenge. Conventional slow extraction methods, such as RF-KO, take seconds and are inadequate for FLASH's requirement of >40 Gy/s dose rates. Overcoming this requires innovative beam dynamics based on...
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Patrick Schreiber (Karlsruhe Institute of Technology)20/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
For more than two decades, the Karlsruhe Research Accelerator (KARA) — KIT’s synchrotron radiation source and accelerator test facility — has been routinely operated in short-pulse mode, which involves reducing the momentum compaction factor. Recent advancements, such as enhanced stability provided by new magnet power supplies, have enabled us to surpass previous limitations in achieving...
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Joshua Gray (European Organization for Nuclear Research)20/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
Small momentum offsets in the LHC can generate significant optics distortions, particularly at low $\beta$*. The beam energy carries a relative uncertainty of approximately $10^{-3}$, which is insufficient for precise optics control. To better understand the impact of energy on the optics, two beam-based techniques have been explored. The first applies a global linear response matrix between...
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Juan Fernández (Safran Electronics & Defense Spain S.L.)20/05/2026, 16:00MC6.T24: Instrumentation: Timing and SynchronizationPoster Presentation
Modern accelerator facilities require deterministic timing distribution, sub-nanosecond synchronization, and ultra-fast protection mechanisms to guarantee safe and coordinated operation across RF systems, diagnostics, and beam transport. White Rabbit (WR) technology has demonstrated exceptional performance in timing accuracy, but its integration into a complete timing and protection...
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Dr Gianluca Martino (Lawrence Berkeley National Laboratory)20/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
We present an unsupervised pipeline that learns a compact representation of beam-on machine state at the ALS, detects anomalies preceding beam-loss events, and highlights the responsible channels for operator diagnosis. Archiver data are resampled to a uniform time grid, filtered to beam-on intervals using stored current, and pruned by variability and principal-component analysis. A...
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Elene Kravishvili (Synchrotron soleil)20/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
SOLEIL II is a synchrotron light source aiming to deliver extremely high-brightness beams in the soft-tender X-ray range [1]. The storage ring will operate with an electron beam emittance below 100 pm·rad. To ensure efficient injection into the storage ring, the emittance of the electron beam extracted from the booster must be in the few-nm·rad range (5.2 nm·rad compared to 140 nm·rad for the...
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Daniele Sertore (Istituto Nazionale di Fisica Nucleare, Laboratori Acceleratori e Superconduttività Applicata)20/05/2026, 16:00MC1.A03: Linear Lepton CollidersPoster Presentation
The ITN-EU consortium, coordinated by CERN with the support of CEA-Saclay and INFN-LASA, is advancing Europe’s contribution to the International Linear Collider (ILC) through the development and validation of high-performance superconducting radiofrequency (SRF) cavities. Activities focus on establishing an optimized production chain, from single-cell R&D to the industrialization of 9-cell...
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Ruihu Zhu (Institute of Modern Physics, Chinese Academy of Sciences)20/05/2026, 16:00MC4.A09: Hadron accelerators: Muon Accelerators, Neutrino Factories, Muon CollidersPoster Presentation
The muon collider is a promising facility for exploring new physics at the energy frontier, combining the advantages of lepton collisions with multi-TeV center-of-mass energies. Achieving the required luminosity requires reducing the six-dimensional (6D) emittance of the muon beam by several orders of magnitude within the muons’ limited lifetime. This reduction can be achieved through...
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Sara Dastan (Elettra-Sincrotrone Trieste S.C.p.A.)20/05/2026, 16:00MC5.D04: Beam Coupling Impedance Theory, Simulations, Measurements, Code DevelopmentPoster Presentation
Elettra 2.0 is a diffraction-limited upgrade of the Elettra storage ring, where beam stability requires an accurate evaluation of the machine impedance. In this work, an updated impedance budget is presented including key vacuum chamber components such as flanges, beam position monitors (BPMs), the scraper system, and resistive wall (RW) effects. Numerical simulations performed with CST Studio...
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Michał Dziewiecki (GSI Helmholtz Centre for Heavy Ion Research)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The beam-loss monitoring system of the UNILAC heavy-ion linear accelerator is based on measuring the beam current at multiple locations along the beamline. Signals from beam–current transformers are amplified, converted into pulse trains and counted within a defined time window. The system has proven to be robust and operationally safe.
The ongoing upgrade aims to replace the...
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Arthur Spierer (European Organization for Nuclear Research)20/05/2026, 16:00MC6.T05: Beam Feedback SystemsPoster Presentation
In preparation for the High-Luminosity LHC (HL-LHC) era, a significant upgrade to the LHC Low-Level RF (LLRF) Beam-Control system is being implemented. The installation of crab cavities during Long Shutdown 3 (LS3, 2026-29), together with the obsolescence of existing components, necessitates a modernization of the LHC LLRF architecture.
The upgraded Beam-Control system - based on MicroTCA...
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Marie Penot (European Synchrotron Radiation Facility)20/05/2026, 16:00MC6.T05: Beam Feedback SystemsPoster Presentation
The Fast Orbit Feedback (FOFB) at the ESRF was initially developed in 2010. During the upgrade of the storage ring for the Extremely Brilliant Source (EBS) project in 2019, the FOFB architecture was adapted to the new ring, but no significant functional improvements were introduced. The current system is now obsolete in several respects, including the hardware and development tools and...
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Dennis Proft (University of Bonn)20/05/2026, 16:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The Electron Stretcher Facility (ELSA) in Bonn has the capability to accelerate spin-polarized electrons. To know the degree of polarization an in situ measurement is necessary. A Compton backscattering polarimeter located in the stretcher ring allows for in situ measurements of the beam polarization degree. Here a high power cw-laser beam is scattering with the electron beam. The...
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Francesca Curbis (Lund University), Sverker Werin (MAX IV Laboratory)20/05/2026, 16:00MC5.D11: Code Developments and Simulation TechniquesPoster Presentation
Teaching accelerator physics is performed in many different environments, where we often think in terms of the major schools: CAS, USPAS or JUAS. The first encounter with accelerators though is most often on undergraduate level as a side-track in a course for particle physics or an introductory course on accelerator technology. Here the high-level tools for simulation often become too...
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Ihar Lobach (Brookhaven National Laboratory)20/05/2026, 16:00MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsPoster Presentation
The Complex Bend Achromat (CBA) lattice for the NSLS-II Upgrade (NSLS-IIU) achieves an ultralow emittance of 23 pm, but currently relies on hard-edge element models. Accurate dynamic aperture simulation requires symplectic transfer maps derived from realistic field models. The overlapping fringe fields and large sagitta in the CBA preclude standard fringe field map approximations and surface...
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Austin Hoover (Oak Ridge National Laboratory)20/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
Intra-beam stripping (IBSt) is a critical beam-loss mechanism in high-intensity H- linacs and presents a significant limitation to increasing beam power. This work presents a computational framework to evaluate IBSt-induced beam losses along the Spallation Neutron Source (SNS) linac for arbitrary bunch distributions. The calculation is based on evaluating the IBSt loss integral using a...
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Oliver Betteridge (Cockcroft Institute)20/05/2026, 16:00MC5.D03: Calculations of EM fields Theory and Code DevelopmentsPoster Presentation
We benchmark analytic and numerical self-field models for a near-Gaussian photoinjector bunch. Kim's analytic three-dimensional Gaussian model is compared with OPAL's mesh-based space-charge solver and two in-house calculations: direct Coulomb summation and FFT-based Green-function convolution. The comparison is performed in the bunch rest frame for a 100 pC, $\gamma \approx 12$ Gaussian...
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Benoît Roche (European Synchrotron Radiation Facility)20/05/2026, 16:00MC6.T05: Beam Feedback SystemsPoster Presentation
Since the beginning of the ESRF-EBS operation in 2020, the storage ring has been routinely operated with an artificially increased vertical emittance (10 pm, 20 pm, or 40 pm depending on the filling mode) to enhance beam lifetime. Until recently, beam excitation was achieved using pseudo-random noise with a relatively large bandwidth*.
We recently have used the “Tune PLL” functionality of...
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Joseph Wolfenden (Cockcroft Institute, University of Liverpool)20/05/2026, 16:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
Beam parameters at the interaction point (IP) of a particle driven wakefield accelerator (PWFA) are carefully controlled to optimize the output energy and beam quality. However, regardless of the parameters achieved, misalignments of beams at a PWFA IP has been shown to produce significant detrimental effects to the output energy and quality. Online monitoring of pointing stability, or beam...
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Tatiana Pieloni (École Polytechnique Fédérale de Lausanne)20/05/2026, 16:00MC5.D11: Code Developments and Simulation TechniquesPoster Presentation
The Xboinc Python package extends the LHC@Home volunteer computing project by integrating the Xsuite simulation toolkit within the BOINC platform. Designed to be the successor to SixTrack's BOINC implementation, the Xboinc framework enables large-scale single-particle tracking based on the novel simulation package Xsuite. Using the computational power of global volunteer computing, Xboinc on...
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Masao Kuriki (Hiroshima University)21/05/2026, 16:00MC3.T02: Advanced techniques/Novel sources: Electron SourcesPoster Presentation
A superconducting accelerator is an excellent technology that can efficiently accelerate high-current beams and is being applied to free electron lasers and next-generation linear electron-positron colliders such as ILC. Not only for the fundamental science, but also the high current electron beam plays a rather important role in industrial and medical applications. This is because the demand...
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Dr Jean-Baptiste Lagrange (Science and Technology Facilities Council)21/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
There is increasing global interest in developing high-power neutron spallation sources. ISIS, as one of the leading facilities in this field, aims to upgrade its existing 800 MeV, 200 kW accelerator to a next-generation machine delivering 1–2 GeV beam energy and 1–2 MW power.
Several upgrade scenarios are under consideration, including RCS, ACS, and FFA-based concepts. In all cases, a 500...
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Pedro Calvo (Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas)21/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
Irradiation of tumours with heavy ions, such as 12C6+, represents one of the most advanced techniques currently available for cancer treatment. Its widespread deployment remains limited, requiring parallel advances in accelerator technologies that provide compact, efficient solutions and precise control over the irradiation parameters. Simultaneously, progress in radiobiology research is...
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Michael Bousonville (Deutsches Elektronen-Synchrotron DESY)21/05/2026, 16:001MC2.A24: Photon sources: Accelerators and Storage Rings, OtherPoster Presentation
The future fourth-generation synchrotron radiation source PETRA IV at DESY requires 24 third-harmonic cavities. Due to the large number of cavities, DESY decided in 2021 to launch an in-house cavity development program designed to meet several criteria: first, the cavities must be easy to manufacture; second, the cavity should be designed to prevent the excitation of higher-order modes (HOM)...
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Verena Kuemper (RI Research Instruments Gmbh)21/05/2026, 16:00MC2.A29: Ultrafast electron diffraction and ultrafast electron microscopyPoster Presentation
Current research in quantum, nano, and energy materials requires information about material structure on the atomic scale in space and time. These materials show a variety of ultra-fast phenomena such as light absorption, structural changes, phase transitions, thermal or non-thermal melting, all of which happen on the ps or sub-ps scale and involve position changes on the Ångström scale.
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In... -
Adam Dixon (MAX IV Laboratory)21/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
The spectral brightness of a free-electron laser (FELs) is strongly dependent on the properties of the electron beam used to generate the radiation. Bunches used to drive FELs must have high currents, which are produced through longitudinal bunch compression. However, collective effects (such as coherent synchrotron radiation) degrade the emittance and energy spread during the bunch...
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1516. A deflection arc for a proposed second fan at the European X-ray free electron laser (THP2146)Stuart Walker (Deutsches Elektronen-Synchrotron DESY)21/05/2026, 16:00MC2.T12: Photon sources: Beam Injection/Extraction and TransportPoster Presentation
Transporting low emittance, high current beams like those required for free electron lasers is non-trivial. A deflection arc designed without specific consideration for such high-quality beams may result in degraded performance in the downstream undulators due to non-zero longitudinal dispersion compressing or decompressing the beam or due to the coherent synchrotron radiation (CSR)...
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Balsa Terzic (Old Dominion University)21/05/2026, 16:00MC5.D10: Beam-Beam Effects Theory, Simulations, Measurements, Code DevelopmentsPoster Presentation
We present a new general analytic formula for radiation spectra of inverse
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Compton scattering due to a flat laser pulse at any scattering angle. Using the analytic solution for a flat laser pulse, we build an approximation of a Gaussian pulse as a series of flat pulses with varying field strengths. From this description we obtain an expression for the phase modulation between successive flat... -
Tristan Calvet (European Organization for Nuclear Research)21/05/2026, 16:00MC4.T20: Hadron accelerators: Targetry and DumpsPoster Presentation
CERN’s upcoming SPS Beam Dump Facility (BDF), in the framework of the HI-ECN3 project, will host the Search for Hidden Particles (SHiP) experiment to search for physics beyond the standard model. At the core of BDF is a solid, high-Z target designed to safely absorb the \SI{400}{\GeV/c} proton beam and dissipate an average deposited thermal power of 305 kW, while providing secondary particles...
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Yue Hao (Facility for Rare Isotope Beams)21/05/2026, 16:00MC5.D11: Code Developments and Simulation TechniquesInvited poster
In modern accelerator modeling, many lattice components can be accurately described using established first-principles physics. However, certain intricate effects, such as complex boundary conditions, collective interactions, and self-fields, remain difficult to model reliably and efficiently from theory alone. At the same time, high-resolution beam position and profile measurements provide...
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Akash Dhruv (Argonne National Laboratory), Nathan Cook (RadiaSoft (United States))21/05/2026, 16:00MC5.D11: Code Developments and Simulation TechniquesPoster Presentation
In this work, we present a numerical method for modeling phase transitions in solid–liquid–plasma systems under the high-energy-density conditions generated by beam strikes in fourth-generation storage-ring light sources. Our approach extends prior level set immersed boundary techniques by employing a signed distance function to represent multiphase interfaces and by coupling interface...
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Daniele D'Ago (University of Padua, Istituto Nazionale di Fisica Nucleare, Sezione di Padova)21/05/2026, 16:00MC4.A14: Neutron Spallation FacilitiesPoster Presentation
The European Spallation Source employs a LINAC with outstanding power, making it a natural candidate for a high-precision neutrino beam aimed at determining neutrino cross-sections at the sub-GeV scale with percent-level accuracy. This opportunity is currently being evaluated within Work Package 6 of the ESSnuSB+ Design Study. In this talk, we present the design of a neutrino beamline that...
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Alexandre Deville (CEA, Paris-Saclay University)21/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
The beam dynamics design of a Radio Frequency Quadrupole (RFQ) is usually optimized to match the beam parameters at the entrance and exit of the cavity. This design step defines the vane geometry—such as the distance from the vane tips to the beam axis, the vane-tip radius, the type and amplitude of the modulation, and the modulation length—and also provides the inter-vane voltage for the next...
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Yuejing Huang (National Synchrotron Radiation Laboratory, University of Science and Technology of China)21/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
To mitigate the intra-beam scattering effects and improve Touschek lifetime, a full-coupling operation based on the linear difference resonance is preliminarily studied for the Hefei Advanced Light Facility (HALF). The dependence of coupling ratio on skew quadrupole strength and the distance to the difference resonance is analyzed. With a coupling ratio of 90%, particle tracking simulations...
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Dr Mark Johnson (Science and Technology Facilities Council, Cockcroft Institute)21/05/2026, 16:00MC2.A08: Photon sources: Linear AcceleratorsPoster Presentation
The beam arrival time jitter is an important parameter for many advanced electron accelerators, including next-generation XFEL drivers. Accurate jitter modelling is particularly important during the design of a new facility, where it is often used to determine the tolerances of the RF sources and photoinjector laser. Conventionally, jitter is modeled using computationally intensive...
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Anahita Omoumi (European Organization for Nuclear Research)21/05/2026, 16:00MC2.T02: Photon sources: Electron SourcesPoster Presentation
The generation of ultrabright electron beams relies on photo-injectors, which are influenced by dynamic surface and collective field effects. Predicting the resulting bunch characteristics is complicated due to the superposition of RF field, near cathode image-charge field, and space-charge. These effects are particularly relevant in high charge density photo-injectors operating with sub-ps...
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Mathieu Lalande (Grand Accélérateur National d'Ions Lourds)21/05/2026, 16:00MC3.A16: Advanced techniques/Novel sources: Advanced ConceptsPoster Presentation
The demand for heavy-ion irradiation in space applications has grown significantly in recent years, surpassing the available beam time at GANIL. To address this, we are developing an innovative beam splitting system combining stripper/degrader techniques with two large-aperture DC magnetic septa.
The originality of this approach lies in generating and transporting three different charge...
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Riccardo De Maria (European Organization for Nuclear Research)21/05/2026, 16:00MC4.A04: Hadron accelerators: Circular AcceleratorsPoster Presentation
This contribution presents the results of a recent absolute-energy and machine-length calibration of the CERN Super Proton Synchrotron (SPS) using two different particle species on the same magnetic cycle. A recent review of the SPS ring geometry and magnet alignments resulted in a change of machine circumference in the optics models to better approach the as-built machine. This measurement...
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Prof. Andreas Lehrach (Forschungszentrum Jülich)21/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
Neutrons are an indispensable tool for science and industry to study the structure and dynamics of matter from the meso to the pico scale and from seconds to femtoseconds. An attractive way to provide urgently needed neutrons in the near future is to build efficient high-current, accelerator-based neutron sources (HiCANS) using pulsed proton beams.
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A new national research infrastructure that... -
Felix Armborst (Paul Scherrer Institute)21/05/2026, 16:00MC2.A04: Photon sources: Circular AcceleratorsPoster Presentation
With the transition from machine commissioning to beamline commissioning and user operation, long-term reliability and high availability of the SLS 2.0 accelerator complex have become critical. Rapid, systematic fault handling is essential to minimize downtime and protect the accelerator. This contribution presents the architecture and implementation of key systems developed for fault...
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David Sagan (Cornell University (CLASSE))21/05/2026, 16:00MC5.D11: Code Developments and Simulation TechniquesPoster Presentation
SciBmad is a new, fully differentiable software ecosystem for accelerator physics, usable in Julia and/or Python. Full differentiability enables efficient and numerically-reliable optimizations of particle accelerators, in particular with machine learning (ML) methods. One of the most commonly used ML frameworks is PyTorch, which provides powerful, versatile, and straightforward tools for such...
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Giovanni Campri (Elettra-Sincrotrone Trieste S.C.p.A.)21/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
FERMI has recently completed an early upgrade phase that has significantly extended its operational capabilities and positioned the facility on a clear path toward the future FERMI 2.0 program. The upgrade of the linac has enabled routine operation at increased beam energy, while the FEL-1 beamline can now be operated in EEHG mode with high reliability, complementing the established HGHG...
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Francis Perez (ALBA Synchrotron (Spain))21/05/2026, 16:00MC2.A04: Photon sources: Circular AcceleratorsPoster Presentation
ALBA is working on the upgrade project that shall transform the actual storage ring, in operation since 2012, into a 4th generation light source, in which the soft X-rays part of the spectrum shall be diffraction limited. The project was launched in 2021 with an R&D budget to build prototypes of the more critical components. The storage ring upgrade is based on a MBA lattice which has to...
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Valentine PETIT (European Organization for Nuclear Research)21/05/2026, 16:00MC4.T32: Ion Beam StrippingPoster Presentation
CCarbon foils are widely used in particle accelerators to produce ion beams with high charge states. These strip-per foils are primarily deposited on a soluble substrate, (e.g. NaCl or betaine-sucrose) that is subsequently dis-solved to provide a free-standing foil. For use in acceler-ators, the free-standing foils need then to be mounted on a metallic frame, a delicate and time consuming...
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David Sagan (Cornell University (CLASSE))21/05/2026, 16:00MC5.D11: Code Developments and Simulation TechniquesPoster Presentation
Tracking through RF cavities is complicated due to the presence of
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time-varying electric and magnetic fields, which are not amenable to
algorithms developed for static fields.
Many simulation programs use simplified models that neglect transverse focusing
even though it can play an important role at low energies.
Other programs track using field maps which can be slow and potentially... -
Alexandre Deville (Commissariat à l'Énergie Atomique et aux Énergies Alternatives)21/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
An upgrade of the High-Intensity Proton Injector (IPHI) at Saclay is currently under study. Among the options considered, this paper investigates the feasibility of a new Radio Frequency Quadrupole (RFQ). This RFQ would build upon operational feedback from both the IPHI and ESS RFQs and operate at the same frequency of 352.21 MHz. Unlike the existing RFQ, divided into three 2-m-long RF...
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Dennis Sauerland (University of Bonn)21/05/2026, 16:00MC4.A13: Hadron accelerators: CyclotronsPoster Presentation
The Bonn Isochronous Cyclotron provides light ion beams of a charge-to-mass ratio Q/A >= 1/2 with kinetic energies ranging from 7 to 14 MeV/A to five experimental sites.
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To improve operation reliability, the cyclotron's electrostatic extraction septum is upgraded using components, manufactured by laser-powder bed fusion (L-PBF).
The new copper septum blade holder reduces thermal load on the... -
Yan Wang (Huazhong University of Science and Technology)21/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
Accurate evaluation of the beam energy and energy spread plays a crucial role in the commissioning and operation of electron accelerators. The energy analysis (EA) system, consisting of a dipole with associated upstream and downstream drift sections, is widely applied in accelerator facilities due to its structural simplicity, large measurement range, and high resolution. However, assembly...
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Xueying Lu (Northern Illinois University, Argonne National Laboratory)21/05/2026, 16:00MC5.D09: Emittance manipulation, Bunch Compression and CoolingPoster Presentation
An experiment was conducted at Argonne Wakefield Accelerator to evaluate the efficacy of shielding plates with varying gap sizes on the suppression of coherent synchrotron radiation (CSR) effects in a compression environment. During the experiment, longitudinal phase spaces upstream and downstream of the compression beamline were measured with three different shielding gap sizes. Although the...
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Youngmin Park (Pohang University of Science and Technology)21/05/2026, 16:00MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsPoster Presentation
We present an analytic phase-space and spectral framework for single-particle dynamics near the third-integer resonance in circular accelerators, emphasizing amplitude-dependent nonlinear effects. Starting from a resonant Hamiltonian in action–angle variables, we derive closed-form relations among island action, separatrix geometry, and the amplitude-dependent tune for both the primary orbit...
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Matheus Velloso (Brazilian Synchrotron Light Laboratory, Universidade Estadual de Campinas (UNICAMP))21/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
The applicability of the Nonlinear Optics from Off-Energy Closed Orbits (NOECO) method to the SIRIUS storage ring is investigated. Off-energy orbit response matrices (OEORMs) were measured and used for sextupole strength calibration through a Levenberg-Marquardt (LM) fitting procedure with Tikhonov regularization. The fitted strengths reproduced the measured chromaticities with reasonable...
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Dr Nuan-Ya Huang (National Synchrotron Radiation Research Center)21/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
This work presents the development of a Python-based application program for resistive-wall (RW) impedance and instability analysis for the Taiwan Photon Source (TPS), with general applicability to both the storage ring (SR) and booster ring (BR). The program is intended to provide a practical and extensible tool for evaluating the impact of vacuum-chamber material, geometry, and segmented...
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Juan Luis Muñoz (ESS Bilbao)21/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
In this paper we describe the static tuning procedure of the ARGITU/HiCANS-platform RFQ at ESS-Bilbao. The machining and assembly of the RFQ were finished during 2025. The cavity is a 3.1 meters long, 4-vane cavity operating at 352.2 MHz. It will accelerate a 40 mA (designed up to 65 mA) proton beam from 45 keV to 3.0 MeV. The RFQ will operate at 1% duty cycle in the first stages of the ARGITU...
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Alex Fomin (Université Paris-Saclay, CNRS/IN2P3, IJCLab)21/05/2026, 16:00MC2.A18: Photon sources: Energy Recovery Linacs (ERLs)Poster Presentation
Integrating corrector coils into quadrupole magnets offers compact steering for high-current ERLs, but the quadrupole yoke distorts the corrector field, especially at large transverse offsets. In PERLE’s injector/merger region the beam is space-charge dominated, and the focusing must be kept weak to limit emittance growth. This creates a balance: a tighter beam increases space-charge effects,...
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Filippo Sottocorona (Deutsches Elektronen-Synchrotron DESY)21/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
The ASPECT project at the European XFEL (EuXFEL) aims to generate isolated attosecond X-ray pulses in the SASE1 beamline using compression-based beam manipulation. In the proposed scheme, the longitudinal phase space is tailored along the linac to produce a strong energy chirp and a localized current spike created in an ESASE chicane upstream of SASE1. The resulting high-current spike is used...
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Sabrina Appel (GSI Helmholtz Centre for Heavy Ion Research)21/05/2026, 16:00MC4.T12: Hadron accelerators: Beam Injection/Extraction and TransportPoster Presentation
The GSI heavy ion synchrotron SIS18 delivers ion beams via slow extraction
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to various experiments, for a wide range of ion species, beam energies,
and spill lengths. For the upcoming FAIR Early Science program, extraction
intensities of more than 1E9 uranium ions per second are required at
energies up to about 1 GeV/u. One of the most important tasks for the slow
extraction is... -
Tianlong He (University of Science and Technology of China)21/05/2026, 16:00MC5.D04: Beam Coupling Impedance Theory, Simulations, Measurements, Code DevelopmentPoster Presentation
The Hefei Advanced Light Facility (HALF), which is being built as a diffraction-limited storage ring in the low-energy regime, faces performance challenges directly from instabilities associated with beam coupling impedance. This paper details a systematic impedance modeling study based on two computational campaigns that established the narrow-band and broad-band impedance budgets. The...
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Dr Miriam Brosi (Karlsruhe Institute of Technology)21/05/2026, 16:00MC2.A08: Photon sources: Linear AcceleratorsPoster Presentation
The Ferninfrarot Linac- und Test-Experiment (FLUTE) facility at the Karlsruhe Institute of Technology (KIT) is designed to deliver ultra-short electron bunches offering a broad range of beam parameters for diverse applications and to provide coherent radiation in light pulses spanning the terahertz and far-infrared spectral range. Beyond its current role as a versatile accelerator test...
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Dr Konrad Altenmüller (ESS Bilbao)21/05/2026, 16:00MC4.T28: Hadron accelerators: Neutron SourcesPoster Presentation
We present beam dynamics studies for the future compact accelerator neutron source HiCANS platform, carried out with the simulation RF-Track code. The simulations were used to optimize the layout and geometry of various components of the beam line. The results are compared to other codes and measurements. The studied beamline consists of the LEBT with two solenoids, an RFQ and a dogleg style...
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Gustavo Perez Segurana (MAX IV Laboratory)21/05/2026, 16:00MC2.A24: Photon sources: Accelerators and Storage Rings, OtherPoster Presentation
MAX 4U is an upgrade of the 3 GeV storage ring at MAX IV Laboratory, meant to considerably reduce the emittance of the present machine (328 pm.rad), limiting changes to the present infrastructure, keeping the same beamline source points and minimizing costs and dark time for the MAX IV user community.
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The paper reports on the beam dynamics conceptual studies, from design to calculation of... -
Taylor Yan (Synchrotron Light Research Institute)21/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
The Siam Photon Source II (SPS-II) booster synchrotron plays a crucial role in delivering high-quality electron beams, enabling efficient injection, and ensuring stable and reliable operation of the fourth-generation storage ring. To improve booster performance and operational robustness, the linear accelerator (Linac) injection energy has been upgraded to 270 MeV. This work presents...
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Anthony Gilfellon (Cockcroft Institute)21/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
The baseline design for the proposed UK XFEL (United Kingdom X-ray Free Electron Laser) facility includes main linear accelerating linacs, which are comprised of 600 L-band 9-cell TESLA style superconducting (SC) RF cavities, which will accelerate a 1 MHz repetition-rate irregularly spaced composite electron beam comprised of varying bunch charges up to an energies of 8 GeV. Here the TESLA...
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Tao Li (Institute of Modern Physics, Chinese Academy of Sciences)21/05/2026, 16:00MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsPoster Presentation
In high-intensity accelerators, the space charge effect is typically a primary factor limiting the achievable beam intensity. For the High Intensity Heavy Ion Accelerator Facility (HIAF), the incorporation of a higher harmonic cavity effectively lengthens the bunch, reduces the peak current, thereby mitigating the space charge effect and increasing the beam intensity. Considering the...
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Foteini Asvesta (European Organization for Nuclear Research)21/05/2026, 16:00MC4.A04: Hadron accelerators: Circular AcceleratorsPoster Presentation
The Proton Synchrotron Booster (PSB) at CERN is the first synchrotron of the proton accelerator chain and provides beam not only to the LHC and the rest of the injector complex,
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but also serves directly ISOLDE. This facility is one of the most demanding users in terms of beam intensity, receiving more than 60% of the overall protons produced at CERN.
To further optimize beam delivery while... -
Xiaobiao Huang (SLAC National Accelerator Laboratory)21/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
We propose a method to perform beam-based alignment measurement for multiple sextupoles simultaneously by minimizing the induced orbit shifts from sextupole modulation through parallel local orbit optimizations. The parallel optimization is made possible by using local orbit bumps as knobs and separating the induced orbit kicks through model-based response matrices. The approach reduces slow,...
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Hiromi Iinuma (Ibaraki University)21/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
To measure spin precession in ultra-precise magnetic fields, we are developing a beam injection technique based on a three-dimensional spiral trajectory. As a representative case, the transverse phase-space requirements for injecting a 300 MeV/c muon beam into a solenoid-type storage magnet (central field: 3 T, local field uniformity controlled below 0.1 ppm using medical-MRI technology) were...
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Jincheng Xiao (University of Science and Technology of China)21/05/2026, 16:00MC5.D03: Calculations of EM fields Theory and Code DevelopmentsPoster Presentation
Photon masks and tapered transitions in the Hefei Advanced Light Facility (HALF) storage ring are typical transition structures that can make non-negligible contributions to the geometric impedance. In this work, ECHO3D is used to benchmark the CST calculations for these two types of structures. The longitudinal and transverse wake potentials, the corresponding impedance spectra, and the...
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Jeffrey Dooling (Argonne National Laboratory)21/05/2026, 16:00MC5.D11: Code Developments and Simulation TechniquesPoster Presentation
The HED-Melt (High Energy Density Modeling of Electron Beam Impacts Toolkit) software suite was developed for studying the damage resulting from beam impacts in accelerators. We have made additional improvements to the toolkit workflow and physics modeling, and have examined specific loss scenarios matching the operation conditions in the Advanced Photon Source Upgrade (APS-U) storage ring....
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Yitong Duan (Tsinghua University)21/05/2026, 16:00MC3.T02: Advanced techniques/Novel sources: Electron SourcesPoster Presentation
VHF CW photocathode electron guns suffer from severe multipactor effects that significantly degrade their operational performance. In this work, the RF cavity geometry was optimized via CST simulations to suppress multipactor, employing a three-phase strategy with fixed key structural parameters. Compared with the SHINE gun baseline, the optimized cavity achieves a much lower multipactor...
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Andrew Potter (Diamond Light Source)21/05/2026, 16:00MC2.A08: Photon sources: Linear AcceleratorsPoster Presentation
The existing 100 MeV linac at the Diamond Light Source will be used as the pre-injector into the upgraded Diamond-II booster ring for injection into the new 3.5 GeV storage ring. In preparation for the upcoming upgrade, we have characterised the linac beam properties, to provide an input for beam tracking simulations and to optimise the linac beam dynamics. We present the latest linac...
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Wiktoria Wiatrowska (SOLARIS National Synchrotron Radiation Centre)21/05/2026, 16:00MC2.A24: Photon sources: Accelerators and Storage Rings, OtherPoster Presentation
This work presents a comprehensive characterization of the linear and non-linear optics of the SOLARIS storage ring under various operational conditions, including post-shutdown recovery and routine operation. Long-term studies were conducted using key diagnostic systems: the Bunch-by-Bunch Feedback (BBBF) system, LUMOS visible-light diagnostics, the PINHOLE X-ray beamline, and Turn-by-Turn...
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3117. Characterization of a Radially Polarized Terahertz Pulse for Dielectric Acceleration (THP3005)Mervin Lim Pac Chong (Laboratoire de Physique des 2 Infinis Irène Joliot-Curie)21/05/2026, 16:00MC3.A15: Advanced techniques/Novel sources: New Acceleration Concepts and TechniquesPoster Presentation
In the last few decades, there has been an increased interest towards scaling down linear accelerators. The Terahertz (THz) Dielectric Accelerator developed, within the scope of the TWAC European project, is a technology that will tend toward that goal. The driving peak field for electron acceleration in the dielectric accelerator is directly related to the peak electric field and polarization...
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Anton Malygin (Karlsruhe Institute of Technology)21/05/2026, 16:00MC2.A25: THz sourcesPoster Presentation
FLUTE, the Ferninfrarot Linac- und Test-Experiment at KIT, is a compact linac-based accelerator test facility and provides electron bunch energies up to several tens of MeV with a wide range of charges. A bunch compressor allows tuning the bunch length from picoseconds down to the femtosecond-scale. FLUTE can therefore generate short, intense THz radiation for a large variety of applications....
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Simone Di Mitri (Elettra-Sincrotrone Trieste S.C.p.A.)21/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
We introduce a closed-form, verified through numerical integration, of the beam energy spread induced by oblique electron-laser interaction in a short undulator, so-called chicane-free laser heater. This scheme is relevant for high repetition rate free-electron lasers, space constrained, or subject to microbunching instability induced by a standard laser heater chicane. A calculation of the...
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Yuwen An (Institute of High Energy Physics, Chinese Academy of Sciences, Spallation Neutron Source Science Center)21/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
Closed orbit distortion (COD) is a critical factor affecting accelerator performance, and realignment serves as an effective measure to mitigate COD and reduce beam loss. The Rapid Cycling Synchrotron (RCS) of the China Spallation Neutron Source (CSNS) currently suffers from significant beam orbit distortion, particularly in the horizontal plane, which limits its operational efficiency. To...
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Giuliano Franchetti (GSI Helmholtz Centre for Heavy Ion Research)21/05/2026, 16:00MC5.D03: Calculations of EM fields Theory and Code DevelopmentsPoster Presentation
Most PIC solvers used in accelerator physics rely on 2D field models, which can limit accuracy for high-intensity beams where space-charge effects dominate. A common approach to compute the self-consistent electric field in particle-based simulation codes is the use of a spectral Poisson solver based on FFT. In the MICROMAP library, a fully 3D fft-based Poisson solver has been implemented. At...
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Thibaut Parmentier (European Organization for Nuclear Research)21/05/2026, 16:00MC4.T19: Hadron accelerators: CollimationPoster Presentation
"In the framework of the High Luminosity – Large Hadron Collider (HL-LHC) project, the
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accelerator’s collimation system will be upgraded. Thirty-six new collimators of 5
different designs will be produced in industry, including units of completely new
designs, as well as replacements for existing collimators and spares. The production of
these collimators is taking place in two stages:... -
Stefano Marangoni (National Center for Oncological Hadrontherapy)21/05/2026, 16:00MC4.T12: Hadron accelerators: Beam Injection/Extraction and TransportPoster Presentation
CNAO (Centro Nazionale di Adroterapia Oncologica) is one of the few hadrontherapy centres all around the world that produce both proton and carbon ions beams.
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It is based on a synchrotron in which the beams are ex-tracted by a slow extraction mechanism by means of either a betatron core or an RFKO electrostatic exciter.
Recently a third source, AISHa-CNAO (Advanced Ion Source for... -
Anna Alexander (Los Alamos National Laboratory)21/05/2026, 16:00MC4.T01: Hadron accelerators: Proton and Ion SourcesPoster Presentation
The LANSCE Accelerator Modernization Project (LAMP) will replace the front-end of the existing LANSCE accelerator, from ion sources through the end of the 100-MeV drift-tube linac. LAMP requires higher peak H- beam currents, and longer lifetimes, than provided by the existing LANSCE H- ion sources. The project is currently constructing an SNS multicusp cesiated source design with an internal...
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Franck Lutton (Grand Accélérateur National d'Ions Lourds), Marc-Hervé Stodel (Grand Accélérateur Nat. d'Ions Lourds)21/05/2026, 16:00MC4.A20: Hadron accelerators: Radioactive IonsPoster Presentation
The linear accelerator of the SPIRAL2 facility at GANIL delivers both light ions to study nuclear reactions with neutrons in the Neutron for Science (NFS) experimental hall, and heavier ions to produce exotic nuclei, like heavy and super heavy nuclei, in the Super Separator Spectrometer (S3). By combining electromagnetic components and thanks to their very large aperture, S3 is a powerful tool...
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Dmitrii Rabusov (Diamond Light Source)21/05/2026, 16:001MC2.A04: Photon sources: Circular AcceleratorsPoster Presentation
A beam-based alignment procedure is used to realign the beamt to the centres of the quadrupoles, enabling calibration of BPM offsets. Accurately determining these quadrupole centres is an important step that requires analyzing BPM data collected while modulating the nearby quadrupole and one or more corrector magnets in the ring. In this paper, several numerical methods to extract the...
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Pardis Niknejadi (Deutsches Elektronen-Synchrotron DESY)21/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
The dynamical focusing of FEL undulators with variable gap in
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FODO lattices with varying but overall low energy is detrimental the FODO optics.
In the absence of compensation by adjusting the FODO quadrupole strengths
it may drive the cell unstable.
Typical examples of FELs in the critical regime are FLASH at DESY and the
SXFEL-SBP at the Shanghai Synchrotron Radiation Facility.
... -
Wilfrid Farabolini (European Organization for Nuclear Research)21/05/2026, 16:00MC2.A08: Photon sources: Linear AcceleratorsPoster Presentation
The CERN Linear Electron Accelerator for Research (CLEAR) is a user facility providing a flexible 200 MeV electron beam for accelerator technology development, radiation studies, and interdisciplinary research. Since its commissioning in 2017, CLEAR has supported a wide range of experiments, often requiring rapid reconfiguration of setups and beam parameters. To address the need for faster...
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James Jones (ASTeC, STFC Daresbury Laboratory, Cockcroft Institute)21/05/2026, 16:00MC2.A08: Photon sources: Linear AcceleratorsPoster Presentation
CLARA is a 250 MeV/celectron beam user facility currently undergoing final beam commissioning at Daresbury Laboratory, in the UK. CLARA features a 4-dipole variable bunch compressor, allowing a wide range of R56 values up to 60 mm, coupled with an X-band fourth harmonic cavity (4HC) for longitudinal harmonic correction of the S-band main linacs. An S-band transverse deflecting cavity (TDC)...
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Francesco Grespan (Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro)21/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
A deuteron beam of unprecedented intensity will be used at the International Fusion Materials Irradiation Facility - DEMO Oriented Neutron Source (IFMIF-DONES) to produce a fusion-like neutron flux and characterize the properties of materials in the challenging environment of a fusion reactor. Recently, the possibility of extracting a small fraction of this beam for complementary experiments...
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Fatima Jafari (Goethe University Frankfurt)21/05/2026, 16:00MC4.A16: Hadron accelerators: Advanced ConceptsPoster Presentation
Dipole-magnets in linear accelerators or synchrotrons are used to bend ion beams. In case of
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intense ion beams, space charge compensation is a strategy to overcome intensity limits. So far
the reduction of the beams space charge is not investigated in bending magnets by experiments.
Therefore, a Gabor-lens was constructed and immersed in a H-type bending magnet to provide
a pure electron... -
Adriana Rossi (European Organization for Nuclear Research)21/05/2026, 16:00MC4.A11: Hadron accelerators: Beam CoolingPoster Presentation
A new electron cooler, replacing the 40 year old one, will be installed starting in 2027, during Long Shutdown 3, in the CERN Antiproton Decelerator ring. The new electron cooler aims to improve reliability, cooling time and beam losses. The design of the new electron cooler, very similar in geometry, electron intensity and energies to the present device, will add electron beam magnetic...
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Mr Alexandre Deville (Commissariat à l'Énergie Atomique et aux Énergies Alternatives)21/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
A new injector called NEWGAIN will be added to the SPIRAL2 Linear Accelerator in parallel with the existing one. It will be mainly composed of an ion source and a Radio Frequency Quadrupole (RFQ) connected to the superconductive LINAC. The RFQ is a standard four-vane bulk copper cavity, composed of 7 segments of about 1m. The new RFQ will accelerate at 88.05MHz particles with charge-over-mass...
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Ibon Bustinduy (ESS Bilbao), Juan Luis Muñoz (ESS Bilbao), David Fernandez-Cañoto (ESS Bilbao)21/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
The ARGITU RFQ at ESS-Bilbao is a 352.2 MHz, 4-vane RFQ that will
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accelerate protons from 45 keV to 3.0 MeV. The RFQ is a 3.1 meters long
structure machined in OHFC copper of high purity, and no brazing has
been used to assemble the vanes that conform each of the four segments.
The cooling of the structure is carried out by cooling channels that
runs longitudinally along the vane tips and... -
Sasha Horney (European Organization for Nuclear Research)21/05/2026, 16:00MC4.A04: Hadron accelerators: Circular AcceleratorsPoster Presentation
Optics measurements are usually performed with low-intensity, non-colliding pilot beams in the interest of machine safety. However, Long-Range Beam-Beam (LRBB) interactions can drive substantial optics perturbations. In 2024, a weak-strong measurement scheme was developed that probes the weak beam while leaving the strong beam unaffected, and machine tests validated this method. In 2025, a...
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Matheus Velloso (Brazilian Synchrotron Light Laboratory)21/05/2026, 16:00MC5.D03: Calculations of EM fields Theory and Code DevelopmentsPoster Presentation
The Trackcpp application, developed by the Accelerator Physics Group at the Brazilian Synchrotron Light Laboratory, models synchrotron accelerators and beam transport lines to perform six-dimensional particle tracking and optics calculations. The path length, one of the coordinates, measures the difference between a particle's arrival time, in units of length, and the accelerator cumulative...
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Pierluigi Fedeli (University of Ferrara)21/05/2026, 16:00MC2.A24: Photon sources: Accelerators and Storage Rings, OtherPoster Presentation
Radiation emitted by charged particles in ordered crystalline structures can, through channeling radiation and coherent bremsstrahlung, yield enhanced, quasi-monochromatic photon peaks compared with the broad spectra from amorphous bremsstrahlung targets.
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For electron beams from 50 MeV to several GeV, the photon yield can increase and the spectrum can be tuned by varying beam and crystal... -
Jun Kai NG (Shanghai Jiao Tong University)21/05/2026, 16:00MC3.A21: Advanced techniques/Novel sources: Secondary BeamsPoster Presentation
Shanghai High-repetition-rate XFEL and Extreme Light (SHINE) Facility provides an 8 GeV, 1 MHz, 100 pC electron beam, offers a unique driver for an electron-driven muon source complementary to existing proton-based facilities. Simulation studies have demonstrated the potential of such a source for muon-based fundamental physics and applied research. Realization of this type of muon beamline...
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Hugh Churn (ASTeC, STFC Daresbury Laboratory, Cockcroft Institute)21/05/2026, 16:00MC2.T02: Photon sources: Electron SourcesPoster Presentation
High performance electron accelerators require high
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brightness electron beams. To achieve this a photocathode
with a high quantum efficiency (QE) and low intrinsic emit-
tance is required while also being robust with a long lifetime
and low dark current. Photocathodes based on alkali metals
can fulfil these requirements and, as such, are an important
area of research for the accelerator... -
Christoph Kittel (Paul Scherrer Institute)21/05/2026, 16:00MC2.T15: Photon sources: Undulators and WigglersPoster Presentation
Modern synchrotron light sources employ various types of undulators to generate highly coherent and well collimated X-rays. A large and homogeneous magnetic field around the beam axis is typically the preferred configuration, since it simplifies both alignment and operation. Nevertheless, a nonhomogeneous field, such as that of a transverse gradient undulator (TGU), offers attractive...
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Xing Rao (Facility for Rare Isotope Beams)21/05/2026, 16:00MC4.T01: Hadron accelerators: Proton and Ion SourcesPoster Presentation
FRIB utilizes a 28-GHz HPECR ion source as the front end device for generating high-intensity, high-charge-state ion beams. In the middle of the device is a plasma chamber, located within the ion source vacuum vessel and positioned inside the strong axial and radial magnetic fields required for ECR plasma confinement. The plasma chamber serves several essential functions: 1 geometric vacuum...
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Jincheng Xiao (University of Science and Technology of China)21/05/2026, 16:00MC5.D11: Code Developments and Simulation TechniquesPoster Presentation
In next generation light sources, double RF systems are widely employed to lengthen bunches, thereby enhancing the Touschek lifetime and suppressing IBS effects. However, the harmonic cavity (HC) in such systems can drive various types of longitudinal instabilities, which severely impede effective bunch lengthening. In theory, a low-level feedback (LLRF) system can be used to selectively...
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Andrew Potter (Cockcroft Institute)21/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
The UK-XFEL spreader will distribute 1 MHz bunches between ten undulator beamlines. Each of the different paths through the spreader must transport an electron bunch to the undulator with minimal increase in the emittance and energy spread, whilst also conforming to various geometry constraints. To minimise the energy spread/emittance growth, the design was optimised to mitigate the effect of...
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Anna Alexander (Los Alamos National Laboratory)21/05/2026, 16:00MC3.A16: Advanced techniques/Novel sources: Advanced ConceptsPoster Presentation
The LANSCE Accelerator Modernization Project (LAMP) will replace the front-end of the existing LANSCE accelerator, from ion sources through the end of the 100-MeV drift-tube linac. The LAMP design includes injecting a bunched beam into an RFQ. The RFQ test stand (RFQTS) will demonstrate this technique using an existing RFQ. This paper discusses the design of the low frequency buncher for...
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Demetrio Hermenegildo Saucedo Cuberes (Universidad de Sevilla)21/05/2026, 16:00MC4.A13: Hadron accelerators: CyclotronsPoster Presentation
FLASH proton therapy has shown the potential to reduce normal-tissue toxicity while maintaining tumor control by delivering radiation in ultra-high dose-rate pulses (>40 Gy/s). However, more radiobiology experiments are needed to better understand the subjacent mechanism and optimize its application beam parameters. To explore this regime using the Cyclotron at Centro Nacionalicémoste de...
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Yoshihiro Ishi (Kyoto University)21/05/2026, 16:00MC3.A12: Advanced techniques/Novel sources: Fixed Field Accelerators (FFAs)Poster Presentation
Based on a scaling FFA lattice, a novel design concept for a heavy-ion storage ring for multi-charge-state beams is presented.
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Yoshihiro Shobuda (Japan Proton Accelerator Research Complex)21/05/2026, 16:00MC5.D03: Calculations of EM fields Theory and Code DevelopmentsPoster Presentation
Ceramic chambers are essential for rapidly accelerating high-intensity beams at the J-PARC RCS, as they mitigate the effects of eddy currents on the chambers. An analytical perspective could provide valuable insight into the design of ceramic chambers, though computer simulations and demanding measurements need to certify the estimates. The identity of bending magnets, including chambers, is a...
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Marco Marchetto (TRIUMF)21/05/2026, 16:00MC4.A14: Neutron Spallation FacilitiesPoster Presentation
A prototype Canadian compact accelerator-driven neutron source (PC-CANS) is proposed for installation at the University of Windsor. PC-CANS is designed to produce neutrons for materials science and BNCT applications, as well as protons for PET isotope production. The source employs a high-intensity compact proton RF linear accelerator delivering a peak current of 20 mA with a 5% duty factor at...
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Sena Maru (The University of Tokyo)21/05/2026, 16:00MC3.A15: Advanced techniques/Novel sources: New Acceleration Concepts and TechniquesPoster Presentation
Dielectric laser accelerator (DLA) is a novel acceleration scheme using dielectric nanostructures with high damage thresholds for the laser electric field. In DLA, the typical structural period is determined by the product of the Lorentz factor β and the laser wavelength λ. At low β, the structural period becomes extremely small, making fabrication impractical and limiting the range of initial...
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Duo Xu (Deutsches Elektronen-Synchrotron DESY)21/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
The Photo Injector Test Facility at DESY in Zeuthen (PITZ) is developing a THz free electron laser (FEL) as a potential source for pump-probe experiments at the European XFEL. Currently, pulse energies exceeding 100 µJ at 3 THz have been demonstrated in a proof-of-principle experiment using the LCLS-I undulator together with the 17 MeV/c electron beam with charges of up to 2.5 nC from the PITZ...
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Mina Akhyani (Forschungszentrum Jülich, École Polytechnique Fédérale de Lausanne)21/05/2026, 16:00MC4.A14: Neutron Spallation FacilitiesPoster Presentation
A dedicated low-frequency target station has been proposed at ESS to support neutron-scattering experiments using >40 T pulsed magnetic fields. These experiments require isolated proton pulses at mHz rates, demanding a specialized extraction system that operates without disturbing the neutron production beyond the extracted pulse.
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This study evaluates the feasibility of such an extraction and... -
Antonin Sauret (European Synchrotron Radiation Facility)21/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
The ESRF-EBS injection scheme consists in a classical four kickers off-axis injection. During injections, beam lines are perturbed and have to stop data acquisition. A new injection scheme using non-linear kickers was designed. The storage ring and transfer line optics and layout had to be modified to integrate the non-linear kickers in the injection cells and preserve injection efficiency in...
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Salih Colmekci (Northern Illinois University)21/05/2026, 16:00MC3.A15: Advanced techniques/Novel sources: New Acceleration Concepts and TechniquesPoster Presentation
Using short radiofrequency (RF) pulses is a promising method for increasing achievable accelerating gradients while significantly suppressing RF breakdown probability. However, short-pulse operation requires a structure with a commensurately low filling time to ensure efficient gradient buildup. To achieve this, we utilize a distributed power coupling scheme that delivers RF power to each...
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Jingyuan Zhao (Tsinghua University)21/05/2026, 16:00MC3.A15: Advanced techniques/Novel sources: New Acceleration Concepts and TechniquesPoster Presentation
Charged particle bunches excite wakefields in acceler-ating cavities, and the transverse components of these wakefields can degrade beam stability. Since these effects are mainly driven by higher-order modes (HOMs), effec-tive HOM suppression is essential for accelerator opera-tion. The choke-mode structure is one of the approaches used for HOM damping.
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This study presents the design of a... -
Simon Barg (The University of Melbourne)21/05/2026, 16:00MC3.A12: Advanced techniques/Novel sources: Fixed Field Accelerators (FFAs)Poster Presentation
The University of Melbourne’s TURBO (Technology for Ultra Rapid Beam Operation) project aims to improve charged particle therapy by developing large momentum acceptance beamlines to reduce the energy layer switching time, increasing the efficiency of delivery systems for cancer treatment. Previously, a closed-dispersion arc has been designed utilizing non-linear magnets built as Halbach...
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Guimei Wang (Brookhaven National Laboratory)21/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportInvited poster
The demands of a higher-brightness photon beam push the electron beam emittance of storage rings toward a diffraction-limited level. The complex bend lattice offers a new approach to achieve low beam emittance. To pave the way for a full lattice upgrade, NSLS-II is planning to replace two existing dipoles with complex bends as a feasibility demonstration. This paper presents the design of the...
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Thomas Lucas (Paul Scherrer Institute)21/05/2026, 16:00MC2.T02: Photon sources: Electron SourcesPoster Presentation
A novel travelling-wave (TW) RF photogun driven by ultra-short RF pulses has been successfully tested, stably reaching cathode fields of 170 MV/m for 100 ns pulses and 190 MV/m for a 10 ns pulse. This cathode surface electric field gradient far surpasses current S-band photoguns and represents a significant step toward increasing the brightness of future XFELs. Here we present an overview of...
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Andreas Grau (Karlsruhe Institute of Technology)21/05/2026, 16:00MC2.T15: Photon sources: Undulators and WigglersPoster Presentation
FLUTE, a short-pulse linac and short-bunch THz test facility, serves as an accelerator test setup for a variety of accelerator physics studies. In its final stage of expansion, it is foreseen to provide coherent radiation in ultra-short, very intense light pulses in the terahertz and far-infrared spectral range. A superconducting undulator (SCU) at the end of the accelerator structure offers...
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Eva Panofski (Deutsches Elektronen-Synchrotron DESY)21/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
DESY, an international accelerator research center, builds on over six decades of experience in the design, construction, and operation of world-class user facilities. The upcoming PETRA IV project represents a major upgrade from PETRA III into a 4th generation light source, involving a complete rebuild of the accelerator and a full redesign of its radiation-protection systems. This upgrade...
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Benedikt Günther (Technical University of Munich)21/05/2026, 16:00MC2.A26: Photon sources: Compton sourcesPoster Presentation
Compact Synchrotron X-ray sources can be realised by (inverse) Compton scattering of laser photons from a counterpropagating highly relativistic electron beam.
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In the case of a bandwidth-limited picosecond laser, the X-ray spectrum’s shape is mainly influenced by the electron beam’s mean energy, its energy spread and emittance.
This fact can be used to determine these electron beam... -
Je Hwan Han (Institute for Rare Isotope Science)21/05/2026, 16:00MC3.T01: Advanced techniques/Novel sources: Proton and Ion SourcesPoster Presentation
RAON is a heavy-ion accelerator facility in Korea that uniquely combines ISOL (Isotope Separation On-Line) and In-Flight (IF) techniques to produce a wide range of Rare Isotope (RI) beams. In the ISOL system, ion sources are continuously being developed to expand RI beam production capabilities. Among them, the Forced Electron Beam Induced Arc Discharge (FEBIAD) ion source is a promising...
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2472. Development and characterization of a neutron beam at the Bonn Isochronous Cyclotron (THP4113)Dennis Sauerland (University of Bonn), Maximilian Loepke (University of Bonn)21/05/2026, 16:00MC4.T28: Hadron accelerators: Neutron SourcesPoster Presentation
The Bonn Isochronous Cyclotron provides light ion beams with a charge-to-mass ratio Q/A ≥ 1/2 and kinetic energies ranging from 7 to 14 MeV per nucleon to one of five experimental sites. It is planned to extend the facility’s irradiation and experimentation capabilities by providing a neutron beam at one of the experimental areas in the near future. The neutrons are produced in a thick carbon...
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Simone Schwarz (Facility for Antiproton and Ion Research, Goethe University Frankfurt)21/05/2026, 16:00MC4.A24: Hadron accelerators: Accelerators and Storage Rings, OtherPoster Presentation
The Figure-8 Storage Ring (F8SR) is an innovative concept designed for storing low energy (<1MeV) proton and ion beams in stellarator-like geometry within strong magnetic field level (B~6-7T). Preliminary studies, presented at previous IPAC conferences, established key design principles and demonstrated the feasibility of a compact ring structure capable of high current beam confinement over...
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Rong Xiang (Helmholtz-Zentrum Dresden-Rossendorf)21/05/2026, 16:00MC2.T02: Photon sources: Electron SourcesPoster Presentation
A prototype of SRF Gun has been built and successfully tested at MSU for LCLS-II HE project. This gun uses an HZDR-type cathode and required the development and implementation of a special cathode transfer and insertion system to ensure reliable operation. The main objectives were to prevent particle contamination, achieve a transverse alignment accuracy of less than 100 µm over a transfer...
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Dipanwita Banerjee (European Organization for Nuclear Research)21/05/2026, 16:00MC4.A21: Hadron accelerators: Secondary BeamsPoster Presentation
The T09 beamline of the PS East Experimental Area delivers mixed secondary particle beams for diverse experiments and test beams. This requires the possibility of generating flexible beam conditions. Predicting beam parameters at the experimental area, such as particle composition, spatial profiles, and momentum spread, typically demands time-intensive simulations with tools like BDSIM and...
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Moenir Sakieldien (iThemba LABS)21/05/2026, 16:00MC4.T01: Hadron accelerators: Proton and Ion SourcesPoster Presentation
At iThemba Laboratory for Accelerator Based Sciences (LABS) proton beams, extracted from an internal Penning ion source, are pre-accelerated in a K8 injector cyclotron and further accelerated in a K200 Separated Sector Cyclotron. The accelerated beams are transported to various target stations used for radionuclide production. An important parameter of the Penning ion source is its lifetime....
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Andrea Denker (Helmholtz-Zentrum Berlin für Materialien und Energie)21/05/2026, 16:00MC4.A13: Hadron accelerators: CyclotronsPoster Presentation
The HZB cyclotron accelerator complex provides 68 MeV protons for proton therapy and related research. The main accelerator is an isochronous sector cyclotron served by two injectors. Originally, the cyclotron was designed for heavy ions. Hence, the beam profile monitors (BPM) on the high energy side are not appropriate for protons at the low intensities used for proton therapy.
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At the... -
Elian Bouquerel (Institut Pluridisciplinaire Hubert Curien)21/05/2026, 16:00MC4.A20: Hadron accelerators: Radioactive IonsPoster Presentation
A new mass-separation technique based on mass-dependent focusing in radio-frequency (RF) quadrupoles is presented. The focusing effect was originally observed during ion-optical simulations for the definition of the low-energy beamline of the S3 spectrometer and was subsequently developed further during a maturation project funded by SATT Conectus. The novel technique can be combined with the...
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Anna Piccoli (University of Ferrara, Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara)21/05/2026, 16:00MC4.A24: Hadron accelerators: Accelerators and Storage Rings, OtherPoster Presentation
Electric Dipole Moments (EDMs) are sensitive probes of CP violation and could help address some open questions of the Standard Model. Recent advances in storage ring and polarimetry technologies enabled the development of a new experimental method for EDM investigations. One of the main parameters involved in the EDM studies via storage rings is the Spin Coherence Time (SCT), i.e., the time...
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Joseph Devlin (Cornell University (CLASSE))21/05/2026, 16:00MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsPoster Presentation
SciBmad is a new software library for accelerator simulation and design. Three key pillars which drove the development of SciBmad’s tracking code are full differentiability (forwards-, backwards-, and Taylor-mode), high performance, and strict symplecticity. Differentiable integrators enable the trivial extraction of lattice functions and their higher-order generalizations, facilitate the use...
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Ferran Fernandez (ALBA Synchrotron (Spain))21/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
The 3.0 GeV ALBA Synchrotron Light Source, in user operation since 2012, is preparing for an upgrade aimed at increasing the brightness and coherence fraction of the delivered X-ray beam. The Storage Ring will be completely renewed while preserving the Insertion Device source points, the orbit length and the electron beam energy; the current injector will remain in use. The “dark period” is...
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Dr Ulf Lehnert (Helmholtz-Zentrum Dresden-Rossendorf)21/05/2026, 16:00MC2.A25: THz sourcesPoster Presentation
As the successor of ELBE, DALI will be an international user facility, designed to comprise versatile radiation sources from the mid-IR to the THz range as well as a powerful pulsed positron source. DALI will utilize the proven superconducting CW RF technology developed over 2 decades at ELBE. While the capability to provide continuous high-repetition rate narrow-bandwidth IR radiation from an...
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Qixin Chen (The University of Tokyo)21/05/2026, 16:00MC3.A15: Advanced techniques/Novel sources: New Acceleration Concepts and TechniquesPoster Presentation
Dielectric-laser accelerator (DLA) can provide accelerating gradients on the order of GV/m and is therefore considered a promising alternative to conventional radio-frequency accelerators. Extending DLA to relativistic electrons is still at an early stage and this research is important for achieving fully miniaturized accelerators. In this paper, we optimize dual-pillars DLA structures and...
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Yuejing Huang (National Synchrotron Radiation Laboratory, University of Science and Technology of China)21/05/2026, 16:00MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsPoster Presentation
Reducing the longitudinal variation of third-order resonance driving terms (RDTs) is much more effective in enlarging storage ring dynamic aperture (DA) than minimizing third-order one-turn RDTs. Recently, we proved the convexity of the quantitative expression for third-order RDT variations. Then, an efficient numerical method for DA optimization was developed, where a high-quality initial...
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Dan Abell (University of Maryland, College Park)21/05/2026, 16:00MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsPoster Presentation
Electron Ion Collider (EIC) will benefit from cooling protons at the highest collision energy (γ=294). The required cooling can be provided by the Ring Electron Cooler (REC) - an RF-based non-magnetized electron cooler employing an electron storage ring. As stored electrons cool the EIC protons, their emittance is gradually increased by both the intra-beam and beam-beam scattering. To...
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Kathrin Schulte-Urlichs (GSI Helmholtz Centre for Heavy Ion Research)21/05/2026, 16:00MC4.A16: Hadron accelerators: Advanced ConceptsPoster Presentation
At GSI the design of a prototype electron lens to demonstrate space charge compensation in bunched ion beams is being continued. The ultimate goal is to increase the beam intensity for FAIR by compensating for the space charge forces in the synchrotrons operating with high intensity beams by overlapping with a pulsed electron beam in the electron lens. The development of the key components —...
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Shaukat Khan (TU Dortmund University)21/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
Echo-enabled harmonic generation (EEHG) has been proposed as a seeding method for free-electron lasers but can also be employed to generate ultrashort radiation pulses at electron storage rings. With the interaction of electrons with femtosecond laser pulses in two undulators (”modulators”), each followed by a magnetic chicane, a longitudinal phase space structure with high harmonic content is...
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1696. Effect of the Laser Polarization on Electron Acceleration in Carbon Nanotube Targets (THP3317)Bruno Silveira Nunes (Instituto de Pesquisas Energéticas e Nucleares)21/05/2026, 16:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationPoster Presentation
Structured carbon-nanotube targets can be used as a medium for accelerating self-injected electrons within a laser-driven wakefield bubble, analogous to blowout laser wakefield acceleration (LWFA) in gaseous plasmas. A previous numerical work demonstrated this behavior using a three-cycle, 800 nm, circularly polarized laser pulse with a peak power of 35.5 TW. In this study, we compare electron...
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Amaia Villa (Tekniker), Andoni Egurrola Areta (Tekniker), Jorge Feuchtwanger (Ikerbasque), Pello Usabiaga (University of the Basque Country)21/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
LINAC7 is a project whose purpose is to design and fabricate a compact and low energy particle accelerator composed of two accelerating stages: an RFQ to increase the proton beam energy up to 3 MeV and an IH DTL to reach the final energy of 7 MeV. For the design of the IH DTL cavity, a cold model is developed to validate the proposed solution. For this, the following methodology and tools have...
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Serhii Kovalov (National Science Center Kharkiv Institute of Physics and Technology)21/05/2026, 16:00MC2.T12: Photon sources: Beam Injection/Extraction and TransportPoster Presentation
This work presents the development of a collimated electron beam suitable for acceleration in dielectric laser accelerators (DLA). A thermionic electron gun was designed to produce a stable ~0.2 mm beam under high-vacuum conditions with electron energies of 10–47 keV. Beam emission and focusing parameters were optimized to enable reliable injection into compact accelerating structures. To...
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Emanuel Karantzoulis (Elettra-Sincrotrone Trieste S.C.p.A.)21/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
With the definitive shutdown of Elettra on July 2, 2025, a new chapter opens for scientific and technological research in Trieste. After thirty-two years of activity with excellent results, Elettra, Italy’s 3rd generation light source is handing over the baton to the Elettra 2.0 project, a fourth-generation light source based on an ultra-low emittance and high transverse coherence storage...
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Guangling Chen (Horia Hulubei National Institute for R and D in Physics and Nuclear Engineering)21/05/2026, 16:00MC2.A26: Photon sources: Compton sourcesPoster Presentation
The high brilliance ELI – Gamma-ray Beam System (ELI-GBS) is under implementation at Extreme Light Infrastructure - Nuclear Physics (ELI-NP) in Romania. The system uses an 800 MeV S-band accelerator driver as an Inverse Compton Scattering (ICS) source coupled to an interaction laser and in the future to a high-finesse optical cavity.
The γ-ray beam will be available with energies up to...
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Chelsea-Lea Randall (Canadian Light Source (Canada), University of Saskatchewan)21/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
During the injection process at the Canadian Light Source (CLS), approximately one third of the electron beam is lost from the Booster Ring (BR) to the Storage Ring (SR) at controlled locations in the Booster-to-Storage Ring (BTS) transfer line. In 2021, the BTS was upgraded to allow the facility to run in Top-Up mode. Included in this upgrade was the installation of new diagnostic CCD cameras...
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Anatoliy Opanasenko (Uppsala University)21/05/2026, 16:00MC4.A24: Hadron accelerators: Accelerators and Storage Rings, OtherPoster Presentation
Laser-based H⁻ charge-exchange injection offers an attractive alternative to conventional carbon-foil stripping for injection into multi-megawatt proton rings. In foil-based systems, foil heating and degradation, radioactivation, uncontrolled beam losses, and transverse emittance growth are factors limiting the achievable average beam power. In this work, we evaluate the feasibility of...
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Antonin Sauret (European Synchrotron Radiation Facility)21/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
In the scope of the upgrade of its injection systems, the European Synchrotron Radiation Facility - Extremely Brilliant Source (ESRF-EBS) has decided to replace the classical 4-kicker bumps injection scheme by a Non-Linear Kickers (NLK) injection scheme in order to achieve a fully transparent injection into the storage ring and minimize the perturbations still seen by the beamlines users....
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Dr Shane Koscielniak (TRIUMF)21/05/2026, 16:00MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsPoster Presentation
The pendulum equation is the archetype for longitudinal motion within an RF bucket. The restoring force is sinusoidal. The case that the confining potential is composed of fundamental and second harmonic is called "dual harmonic". The solution to the pendulum equation of motion in terms of Jacobi elliptic functions is well known, for 140 years. The solution to the dual harmonic equation, also...
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Nikita Kuklev (Fermi National Accelerator Laboratory)21/05/2026, 16:00MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsInvited poster
Nonlinear integrable optics is a promising design approach for suppressing fast collective instabilities. To study it experimentally, a new storage ring, the Integrable Optics Test Accelerator (IOTA), was built at Fermilab. IOTA has recently completed its fourth scientific run, achieving the design 150 MeV energy and significantly improving on various beam parameters. We present the results of...
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2152. Experimental Characterization of Head–Tail Instabilities in the SOLARIS Storage Ring (THP2008)Jacek Biernat (SOLARIS National Synchrotron Radiation Centre)21/05/2026, 16:00MC2.A04: Photon sources: Circular AcceleratorsPoster Presentation
The SOLARIS 1.5 GeV storage ring featuring a compact 96 m circumference design, operates at currents up to 500 mA with a horizontal emittance of ~6 nm·rad, delivering high-brightness synchrotron radiation from the soft X-ray to ultraviolet range. Head–tail instabilities remain a significant limitation for the stable operation of modern synchrotron light sources, particularly as facilities...
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Mr Jinming Zhang (National Synchrotron Radiation Laboratory, University of Science and Technology of China)21/05/2026, 16:00MC5.D03: Calculations of EM fields Theory and Code DevelopmentsPoster Presentation
We present a design for the experimental validation of relativistic ponderomotive dynamics on a realistic MeV electron-beam platform. The scheme combines an S-band gun with a co-propagating focused laser pulse to induce longitudinal momentum modulation in relativistic electrons. Using a nonparaxial laser-field model and beam-dynamics simulations, we evaluate the expected post-interaction...
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Connor Monaghan (University of Liverpool)21/05/2026, 16:00MC2.A18: Photon sources: Energy Recovery Linacs (ERLs)Poster Presentation
The PERLE (Powerful Energy Recovery Linac for Experiments) project requires an injector which is capable of delivering a high-current, high-bunch-charge electron beam. Therefore, a key challenge is controlling the effects of space charge forces and the subsequent formation of halo. Beam dynamics simulations of the PERLE injector predict the onset of transverse halo due to a strong space charge...
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Areso Sherjan (GSI Helmholtz Centre for Heavy Ion Research)21/05/2026, 16:00MC4.A24: Hadron accelerators: Accelerators and Storage Rings, OtherPoster Presentation
The ESR storage ring at GSI unlocks the possibility for various atomic physics experiments with exotic beams. Therefore the operation of the ESR requires a wild change of parameters and cycles [1]. This may inadvertently push the machine tunes to cross a nonlinear resonance. This is particularly important especially in the process of deceleration, where the machine tune is moving quite notably...
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Jiacheng Wu (Deutsches Elektronen-Synchrotron DESY)21/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
Reverse tapering can suppress the FEL field while preserving electron microbunching for downstream radiators over an appropriate range of taper strength. In a monochromatically seeded FEL, one-dimensional small-signal theory suggests that the response to reverse tapering can be compared with the response to an accumulated resonance detuning. Here, we report on an experimental investigation of...
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Yan Zhao (Tsinghua University)21/05/2026, 16:00MC3.T25: Advanced techniques/Novel sources: LasersPoster Presentation
We present a four-mirror bowtie-type continuous-wave optical enhancement cavity capable of sustaining an average intracavity power exceeding 1 megawatt at a wavelength of 1064 nm for several minutes. The experiment achieved a maximum intracavity power of 1.15 MW, while the intracavity beam maintained a pure fundamental Gaussian lateral mode with an effective enhancement factor exceeding 9,000....
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Lise Pauwels (European Organization for Nuclear Research, Université Libre de Bruxelles)21/05/2026, 16:00MC4.T19: Hadron accelerators: CollimationPoster Presentation
Studies conducted at CERN's Super Proton Synchrotron (SPS) in 2017 showed an asymmetric off-momentum acceptance for Q20 optics. A systematic mechanical limitation near the defocussing quadrupoles -- the most restrictive regions of the ring in the Q20 optics -- was suggested as a possible explanation for this asymmetry and was addressed during LS2. However, improvements were only observed in...
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Sami Tantawi (Arizona State University)21/05/2026, 16:00MC5.D03: Calculations of EM fields Theory and Code DevelopmentsPoster Presentation
Radio frequency (RF) deflecting cavity structures are widely used in accelerator-based light sources for diagnostic and emittance-exchange (EEX) applications, including systems like the Compact X-ray Free Electron Laser (CXFEL) at ASU. The primary tool for designing and optimizing these cavities is the finite element method (FEM). Conventional approaches rely on edge-element formulations,...
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2048. Feasibility Study of In Situ Thermal Monitoring of Stripper Foils in the J-PARC RCS. (THP4606)Kunihiro Kojima (Japan Atomic Energy Agency)21/05/2026, 16:00MC4.T32: Ion Beam StrippingPoster Presentation
Stripper foils in high-intensity proton accelerators experience significant thermal loads during beam irradiation, causing deformation, degradation, and reduced lifetime. In the J-PARC Rapid Cycling Synchrotron (RCS), a carbon stripper foil is irradiated by a 400-MeV injecting H⁻ beam and the circulating proton beam, and simulations predict temperatures of up to about 1000 °C. Direct...
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Salim Ogur (Thomas Jefferson National Accelerator Facility)21/05/2026, 16:00MC3.A12: Advanced techniques/Novel sources: Fixed Field Accelerators (FFAs)Poster Presentation
Jefferson Lab is planning an upgrade of the Continuous Electron Beam Accelerator Facility (CEBAF) to deliver highly polarized electron beams up to 22 GeV using Fixed-Field Alternating-Gradient (FFA) magnets. As the application of FFA technology in the 10–22 GeV energy range is unprecedented, experimental validation is required prior to full-scale implementation. To support this effort, a...
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Dr Jean-Baptiste Lagrange (Science and Technology Facilities Council)21/05/2026, 16:00MC4.A12: Hadron accelerators: Fixed Field Accelerators (FFAs)Poster Presentation
The Fixed Field Alternating Gradient (FFA) accelerator is a natural candidate for a high-power pulsed proton driver, although no high-power FFA has yet been constructed. As a critical component of the accelerator, the main magnets have been the subject of particular study. Operational flexibility, in terms of machine optics, over a large range is an essential feature of such a machine. In...
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Dr Miriam Brosi (Karlsruhe Institute of Technology)21/05/2026, 16:00MC2.A08: Photon sources: Linear AcceleratorsPoster Presentation
The linac-based test facility FLUTE (Ferninfrarot Linac- und Test-Experiment) at the Karlsruhe Institute of Technology (KIT) was designed to operate over a broad range of beam parameters and to generate ultra-short electron bunches. This versatility enables studies beyond accelerator physics, including applications in medical research. In particular, FLUTE can be used to explore operation...
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Dr Hendrik Hähnel (Goethe University Frankfurt), Philipp Müller (Goethe University Frankfurt)21/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
We present results from a 1.4 MeV proton beam test of the first IH-Type linac structure additively manufactured (AM) from pure copper. The cavity has been tested up to 25 kW at a duty cycle of 2 %, which corresponds to a cavity voltage of 1 MV with peak fields at the drift tubes reaching up to 68 MV/m without RF breakdown at full power. A 1.4 MeV proton beam from a Van de Graaff accelerator...
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Dr Rainer Cee (Heidelberg Ion Beam Therapy Centre)21/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
The injector linac of HIT (Heidelberg Ion Beam Therapy Centre) has delivered sufficient beam for patient treatments over the past years, but the particle transmission of the RFQ has continually remained below expectations. To reduce overall treatment times and to provide higher particle intensities for the upcoming Multi-Energy Operation (MEO) mode of the synchrotron, HIT has developed a new...
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Raffael Niemczyk (Helmholtz-Zentrum Dresden-Rossendorf)21/05/2026, 16:00MC2.A29: Ultrafast electron diffraction and ultrafast electron microscopyPoster Presentation
Ultrafast electron diffraction (UED) allows for the characterization of structural and electronic dynamics in samples with sub-picosecond resolution. Utilizing a continuous wave photoinjector gives rise to MHz MeV UED, which has the benefits of better temporal resolution, higher beam coherence, higher resolution, and high repetition rates. A superconducting radiofrequency (SRF) photoinjector...
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Patrick Rauer (Deutsches Elektronen-Synchrotron DESY)21/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
Cavity-based X-ray Free Electron Lasers(CBXFELs) promise to transform the field of hard X-ray science by delivering radiation with exceptional brilliance, stability,and full three-dimensional coherence. At the European XFEL, we have recently achieved lasing with multi-pass gain in a proof-of-concept CBXFEL featuring a 132.8m round-trip hard X-ray cavity using diamond crystals in Bragg...
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Andrii Pastushenko (GSI Helmholtz Centre for Heavy Ion Research)21/05/2026, 16:001MC4.T12: Hadron accelerators: Beam Injection/Extraction and TransportPoster Presentation
The use of mixed ion beams is a developing approach aimed at improving current carbon-ion therapy by enabling online monitoring of dose deposition. In such a configuration, the main dose is still delivered by carbon ions, while lighter ions traverse the patient with negligible dose contribution and can be used for imaging. The main challenges of this approach include the need to simultaneously...
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Xing Rao (Facility for Rare Isotope Beams)21/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
The Facility for Rare Isotope Beams (FRIB) is planning four Accelerator Improvement Projects (AIPs) during a two-month summer shutdown to mitigate beam losses induced by the stripper. The motivation for this project has been described in previous publications. The implementation of these projects is required to accelerate multiple-charge-state heavy-ion beams simultaneously as beam power on...
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Dr Anne-Sophie Chauchat (CEA DAM Île-de-France, Université Paris-Saclay, CEA, Laboratoire Matière en Conditions Extrêmes)21/05/2026, 16:00MC2.T02: Photon sources: Electron SourcesPoster Presentation
The 19 MeV electron linear accelerator ELSA at CEA DAM operated as an IR‑FEL in the 1990s and is now a user facility that provides pulsed bremsstrahlung and Inverse Compton Scattering (ICS) X‑rays. Renovation of the facility is currently under way to improve system reliability. The 144 MHz photo‑injector gun is the key element for producing a low‑emittance beam for the ICS X‑ray source. While...
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Junyi Chen (University of Science and Technology of China)21/05/2026, 16:00MC5.A30: Beam Dynamics: Polarized beamsPoster Presentation
Vortex(twisted) electrons, which carry specific orbital angular momentum(OAM), have been utilized in electron microscopy over the past two decades. In the last decade or so, due to their unique quantum properties and collision characteristics, vortex electrons have emerged as a promising direction in the field of high-energy physics. The challenge of generating, maintaining, and accelerating...
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Antoine COURJAUD (Amplitude Laser)21/05/2026, 16:00MC2.T25: Photon sources: LasersPoster Presentation
Precise synchronization plays a major role in the stability of an accelerator-based light source, or for ultrafast dynamics studies. We will present our strategy and recent achievements applied to synchronize a kHz Ti:Sa ultrafast laser to a Terawatt Yb ultrafast laser. We report on the synchronization at few fs rms level, both on short-term and long-term.
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We first synchronize the slave... -
Peter Owusu (Arizona State University)21/05/2026, 16:00MC3.T02: Advanced techniques/Novel sources: Electron SourcesPoster Presentation
Alkali–antimonide photocathodes are promising candidates for high-brightness electron sources due to their combination of high quantum efficiency (QE) in the visible range and intrinsically low mean transverse energy (MTE). In this work, we present ongoing R&D aimed at understanding and optimizing their growth and performance. Using an ultra-high-vacuum (UHV) preparation and transfer system,...
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Lee Carver (European Synchrotron Radiation Facility)21/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
The ESRF foresees the installation of a 4th harmonic cavity system to provide bunch lengthening in both multi-bunch filling modes and high bunch current timing modes. Here we will present simulation results of the expected machine performance.
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Oscar Blanco-García (ALBA Synchrotron (Spain))21/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
The upgrade of ALBA to a fourth generation light source ALBA II forsees to reduce the electron beam emittance to about 200 pm while increasing the total stored current to 300 mA. This combination increases the risk of damage to elements in the accelerator when the beam is lost in a controlled or uncontrolled manner.
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We simulate the electron beam particle loss distribution for the most recent... -
Manuel Heilmann (GSI Helmholtz Centre for Heavy Ion Research)21/05/2026, 16:00MC4.A16: Hadron accelerators: Advanced ConceptsPoster Presentation
Space-charge lenses based on confined non-neutral plasmas, such as electron clouds, provide strong, axially symmetric focusing for high-intensity ion beams and serve as an alternative to conventional quadrupole magnets. The so-called Mobley drift tube integrates a Gabor-Lens (GL) into a drift tube of a linear accelerator, enabling beam focusing within an accelerating RF structure. The confined...
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Maud Baylac (Laboratoire de Physique Subatomique et de Cosmologie)21/05/2026, 16:00MC2.A18: Photon sources: Energy Recovery Linacs (ERLs)Poster Presentation
In an Energy Recovery Linac (ERL), the beam, after acceleration and interaction, is recirculated and decelerated in the accelerating cavities of the linac. In such a scheme, the power of the beam is recovered within the SRF cavities, leading to substantial savings in electrical power. PERLE (Power Energy Recovery Linac for Experiments) is a high-power ERL demonstrator in Orsay, aiming to...
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Adem Ates (Goethe University Frankfurt), Dr Hendrik Hähnel (Goethe University Frankfurt, HFHF - Helmholtz Research Academy Hesse for FAIR, Campus Frankfurt)21/05/2026, 16:00MC4.T28: Hadron accelerators: Neutron SourcesPoster Presentation
The Frankfurt Neutron Source FRANZ is a compact-accelerator driven neutron source based on the $^7Li(p,n)^7Be$ reaction using a 2 MeV proton beam. Following successful stand-alone RF conditioning of the IH-DTL up to 10 kW cw, the coupled RFQ-IH-DTL cavity was assembled, tuned and conditioned up to 200 kW. First beam experiments have been performed, demonstrating proton acceleration to 2 MeV....
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Anthony Gilfellon (Cockcroft Institute, Science and Technology Facilities Council)21/05/2026, 16:00MC2.T02: Photon sources: Electron SourcesPoster Presentation
In April 2024, work began at Daresbury Laboratory on the high-power conditioning of CLARA’s (Compact Linear Accelerator for Research and Applications) radio-frequency (RF) structures using proprietary automated RF conditioning software, N0-ARC (No Operator Automated RF Conditioner) to attain operational powers and pulse lengths. The four types of structure conditioned were an S-band...
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693. HIGH QUANTUM EFFICIENCY ALKALI-ANTIMONIDE PHOTOCATHODES FOR PERLE HIGH CURRENT DC GUN (THP2102)Gaël Sattonnay (Université Paris-Saclay, CNRS/IN2P3, IJCLab)21/05/2026, 16:00MC2.A18: Photon sources: Energy Recovery Linacs (ERLs)Poster Presentation
Modern particle accelerators, while enabling cutting-edge research, face major challenges in energy efficiency and beam intensity. The PERLE (Powerful Energy Recovery Linac for Experiments) project, developed at IJCLab/CNRS, aims to demonstrate a high-current energy recovery linac (ERL) using superconducting RF technology. By recovering the beam energy after use, PERLE drastically reduces RF...
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Xueying Lu (Northern Illinois University)21/05/2026, 16:00MC3.T02: Advanced techniques/Novel sources: Electron SourcesPoster Presentation
High-gradient operation in photocathode RF guns enables brighter beams and is often combined with high--quantum-efficiency semiconductor photocathodes such as Cs$_2$Te. To study photoemission from Cs$_2$Te under these conditions, we develop a Monte Carlo model of carrier transport and emission in a thin-film semiconductor that uses electronic, phonon, dielectric, and optical properties...
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Sami Tantawi (Arizona State University)21/05/2026, 16:00MC3.T02: Advanced techniques/Novel sources: Electron SourcesPoster Presentation
We present an RF photoinjector architecture that utilizes the TM$_{02}$ mode in the first half-cell housing the cathode. Unlike the conventional TM$_{01}$ mode configuration, this design introduces a controlled discontinuity in the surface field, producing a region free of surface currents. This unique topology allows the cathode to be mechanically separated from the gun body without...
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André Donadon Servelle (European Organization for Nuclear Research)21/05/2026, 16:00MC4.T19: Hadron accelerators: CollimationPoster Presentation
Due to the increase in stored beam energy to almost 700 MJ in the High-
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Luminosity LHC, the safe handling of any beam losses by the collimation system
is crucial. The cleaning performance of the collimation system could be negatively
impacted by imperfections and errors in machine elements. Errors in collimator jaw
positions and angles as well as imperfections of the machine aperture can... -
Mingxuan Chang (Institute of Modern Physics, Chinese Academy of Sciences)21/05/2026, 16:00MC5.D11: Code Developments and Simulation TechniquesPoster Presentation
HIAF is a high-intensity particle accelerator that will perform injection, acceleration, and extraction at a repetition rate of 3 Hz. The beam will be affected by a variety of high-intensity effects. In order to increase the beam intensity, we hope to fully and accurately simulate the impact of those effects so that we can take appropriate suppression measures. For this purpose, we are...
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Abhishek Pathak (Fermi National Accelerator Laboratory)21/05/2026, 16:00MC3.A16: Advanced techniques/Novel sources: Advanced ConceptsPoster Presentation
The Hofmann stability chart remains a standard for visualizing parametric resonances in space-charge–dominated linacs, but its use typically relies on non-oscillatory Vlasov dispersion relations with simplifying assumptions (continuous focusing, KV phase space, linear optics, limited transverse–longitudinal coupling). We revisit the chart for the PIP-II linac along three tracks. (1) We...
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Yang Xiong (Tsinghua University), Peizhi Fang (Tsinghua University)21/05/2026, 16:00MC5.D09: Emittance manipulation, Bunch Compression and CoolingPoster Presentation
A longitudinal localized kick-driven fast extraction technique has been employed to enable three-dimensional (3D) proton pencil beam scanning (PBS) at ultra-high dose rate (FLASH) for large-volume targets. However, it was observed that the longitudinal line density of the proton bunch significantly influences spot dose accuracy. In this study, a hollow bunch method—implemented by using two...
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Filip Peczek (University of Manchester, Cockcroft Institute)21/05/2026, 16:00MC3.A15: Advanced techniques/Novel sources: New Acceleration Concepts and TechniquesPoster Presentation
Downscaling particle accelerators is crucial to expanding their range of applications. Dielectric-lined waveguides (DLWs) can support hybrid modes with a strong accelerating component. Excited by terahertz (THz) frequency pulses, DLWs can deliver high accelerating gradients over cm-scale interaction lengths, promising the development of future compact electron accelerators. By precisely...
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Weihong Huang (Tsinghua University)21/05/2026, 16:00MC5.D05: Coherent and Incoherent Instabilities Theory, Simulations, Code DevelopmentPoster Presentation
Evaluating the energy spread growth due to radiation is crucial for the design of steady-state microbunching (SSMB) insertion section. This study systematically benchmarks a classical analytical formula against three-dimensional numerical simulations to validate its accuracy under varying initial energy spreads. Our findings reveal that while the formula provides reliable estimations for beams...
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Mihail Miceski (Extreme Light Infrastructure Beamlines, Czech Technical University in Prague)21/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
Recent advances in laser-plasma accelerators (LPAs) have generated high-quality electron beams characterised by high peak currents and low emittance, making them suitable for powering compact, next-generation free electron lasers (FELs). However, variations in laser performance from shot to shot cause mismatches in position and angle at the injection point, complicating efficient beam...
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Nicolas Mounet (European Organization for Nuclear Research)21/05/2026, 16:00MC5.D04: Beam Coupling Impedance Theory, Simulations, Measurements, Code DevelopmentPoster Presentation
Dedicated instability studies were performed in the LHC to quantify the impact of Landau octupoles on transverse beam stability. Controlled single-bunch instabilities were intentionally triggered at injection energy, and the corresponding growth rates were measured while systematically varying the Landau octupole knob. A clear correlation between the octupole current and the measured...
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Salim Ogur (Thomas Jefferson National Accelerator Facility)21/05/2026, 16:00MC3.A12: Advanced techniques/Novel sources: Fixed Field Accelerators (FFAs)Poster Presentation
Jefferson Lab is pursuing an upgrade to nearly double the beam energy of the Continuous Electron Beam Accelerator Facility (CEBAF) to 22 GeV, while maintaining high electron polarization. The upgrade’s cornerstone is a new pair of FFA arcs (Fixed Field Alternating Gradient) configured with Halbach style, combined-function permanent magnets, that would support simultaneous transport of...
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Iago Carvalho de Almeida (Brazilian Synchrotron Light Laboratory)21/05/2026, 16:00MC5.D04: Beam Coupling Impedance Theory, Simulations, Measurements, Code DevelopmentPoster Presentation
Beamlines of modern synchrotron light sources demand the installation of long undulators with small gaps in the storage ring. The vacuum chamber of these devices requires time-consuming wakefield simulations for impedance estimation. Furthermore, these structures can exhibit trapped modes, demanding extensive eigenmode simulations for impedance characterization. This paper presents a method to...
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Na Wang (Institute of High Energy Physics, Chinese Academy of Sciences, University of Chinese Academy of Sciences)21/05/2026, 16:00MC5.D04: Beam Coupling Impedance Theory, Simulations, Measurements, Code DevelopmentPoster Presentation
Electrostatic separator is a crucial component required in the Circular Electron Position Collider to separate electron and positron beams, therefore the two beams can share the RF cavities at high beam operation energies. The impedance contribution from the component is one of the main concerns during the design of the structure. In this paper, the impedance characteristic of the...
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Katrin Holzfeind (TU Wien)21/05/2026, 16:00MC4.T12: Hadron accelerators: Beam Injection/Extraction and TransportPoster Presentation
Moving from extracting one single energy per cycle to multiple energies promises improvements in time and power budgets of medical synchrotrons. To ensure reproducible and accurate beams for treatment, hysteresis effects must be considered. To avoid losses during energy changes, the beam has to be moved away from the extraction resonance. Different methods of moving the working point were...
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Ulrich Dorda (Belgian Nuclear Research Centre)21/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
This contribution provides an update on the development of the 4 mA, 100 MeV continuous-wave (CW) superconducting proton linac - the first stage of MYRRHA’s accelerator-driven system (ADS). We present the improved accelerator layout and beam optics design, outline the key design choices for critical components, and report on the latest manufacturing and civil construction progress.
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Gaël Le Bec (European Synchrotron Radiation Facility)21/05/2026, 16:00MC2.T15: Photon sources: Undulators and WigglersPoster Presentation
The European Synchrotron Radiation Facility (ESRF) operates a large number of in vacuum undulators (IVUs) and cryogenic permanent magnet undulators (CPMUs). Eight IVUs and nine CPMUs are currently in service, and a few more are under construction or planned. CPMU technology is used to build short period undulators with a wide tuning range. These insertion devices generate intense high order...
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Peter Forck (GSI Helmholtz Centre for Heavy Ion Research)21/05/2026, 16:00MC4.T12: Hadron accelerators: Beam Injection/Extraction and TransportPoster Presentation
Measurements and simulations of slowly extracted spills via tune scans at the GSI heavy ion synchrotron SIS18 were performed to study the formation of micro-structures on time scales of several 10 to 100 µs. A common technique to minimize the level of the spill micro-structure is the extraction of bunched beams. In regular operation, the bunches are built up by a ferrite-loaded rf-cavity...
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Daniele Sertore (Istituto Nazionale di Fisica Nucleare, Laboratori Acceleratori e Superconduttività Applicata)21/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
INFN LASA is advancing its in-kind contribution to the PIP-II project at Fermilab, with significant progress achieved in both cavity production and testing infrastructures.
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The main activity is the fabrication of 38 five-cell β = 0.61 superconducting cavities for the LB650 section of the linac. Manufacturing is well advanced with mechanical production of the series cavities progressing while... -
YuanYuan Qin (Tsinghua University)21/05/2026, 16:00MC3.T02: Advanced techniques/Novel sources: Electron SourcesPoster Presentation
High-quality electron beams are critical for imaging experiments that provide detailed microscopic structural insights into materials. The Very-High-Frequency electron gun, capable of operating in continuous and pulsed modes, is a preferable option. In this paper, we employ a tungsten tip with an apex radius of curvature approximately 100nm as a cold field emission cathode in the VHF gun and...
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Illya Drebot (Istituto Nazionale di Fisica Nucleare)21/05/2026, 16:00MC2.A26: Photon sources: Compton sourcesPoster Presentation
The initial commissioning has started at the STAR infrastructure (Southern Europe Thomson Back-scattering Source for Applied Research) hosted by the University of Calabria in Southern Italy. STAR is a Compact Light Source serving a user facility with monochromatic, tunable, polarized, ps-duration X-ray photon beams in the 40–350 keV energy range.
The STAR project, and its high-energy...
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Dmitrii Rabusov (Diamond Light Source)21/05/2026, 16:00MC2.A04: Photon sources: Circular AcceleratorsPoster Presentation
The Diamond-II booster ring is designed to reduce the emittance and the bunch length for efficient injection into the storage ring. Non-optimal commissioning of the injector might increase the dark-time period and the impact on the existing scientific program. This work explores the strategies for booster commissioning to predict and resolve possible issues. The results include tracking...
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Felix Armborst (Paul Scherrer Institute)21/05/2026, 16:00MC2.A04: Photon sources: Circular AcceleratorsPoster Presentation
Following successful machine commissioning, the Swiss Light Source upgrade, SLS 2.0, entered its first beamline commissioning and user operation phases. This contribution reports on the achieved storage-ring performance and operational stability during user operation. Storage-ring optics were tuned near design, achieving beta beating within a few percent and optimized dispersion. Sub-micron...
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Koryun Manukyan (Elettra-Sincrotrone Trieste S.C.p.A.)21/05/2026, 16:00MC2.T12: Photon sources: Beam Injection/Extraction and TransportPoster Presentation
A comprehensive evaluation of injection performance for Elettra 2.0 has been conducted to establish high-efficiency, low-perturbation top-up operation in the upgraded ultralow-emittance storage ring. The baseline four-kicker bump injection scheme, utilizing a 4.3 μs half-sine pulse and a −6 mm stored-beam orbit excursion, achieves injection efficiencies up to 100% under nominal conditions....
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Simona Bettoni (Paul Scherrer Institute)21/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
Accurate measurement of high-order multipoles in insertion devices is crucial for meeting the beam-dynamics requirements of Swiss Light Source 2.0. A beam-based method using transverse tune-shift measurements can effectively identify sextupole, octupole, and higher-order magnetic components under normal operating conditions, avoiding the need for dedicated magnetic tests. Among the upgraded...
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Dario Giove (Istituto Nazionale di Fisica Nucleare, Laboratori Acceleratori e Superconduttività Applicata)21/05/2026, 16:00MC2.A18: Photon sources: Energy Recovery Linacs (ERLs)Poster Presentation
A High Brightness Beams Test Facility (HB2TF) has been funded in 2023 at the INFN-LASA laboratory in Segrate (Italy). The Test Facility will allow to perform developments in ERL design and to carry out experiments with a high current CW electron beam in frontier areas of accelerator physics.
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In this paper we will report the status of the project and discuss the first tests underway on the... -
Ao Liu (ShanghaiTech University)21/05/2026, 16:00MC5.D05: Coherent and Incoherent Instabilities Theory, Simulations, Code DevelopmentPoster Presentation
Intrabeam scattering (IBS) increases emittance and energy spread in low-emittance beams. In angular-dispersion-induced microbunching (ADM) beam lines, nanometre-scale density peaks cannot be represented reliably by a single smooth rms bunch length. This work separates the classical local IBS source from the microbunching spectrum: the former supplies the lattice and phase-space scattering...
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Dr Driss Oumbarek Espinos (High Energy Accelerator Research Organization)21/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
The manipulation of particle beams is a cornerstone of modern science. From current colliders to unravel the particle structures to the generation of coherent radiation with free electron laser. All of these applications of particle beams have wildly different parameters. However, the thing they have in common is the need of a good control of beams to transport them to the interaction point...
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Daniele Sertore (Istituto Nazionale di Fisica Nucleare, Laboratori Acceleratori e Superconduttività Applicata)21/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
Multi-alkali antimonide photocathodes have emerged as promising photoemissive materials for electron sources in high-repetition-rate free-electron laser (FEL) applications due to their low thermal emittance and high quantum efficiency in the green wavelength region. To evaluate their feasibility for operation in high-gradient RF guns, a collaborative effort between DESY-PITZ and INFN-LASA was...
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Johan Holmberg (Lund University, European Spallation Source)21/05/2026, 16:00MC4.A09: Hadron accelerators: Muon Accelerators, Neutrino Factories, Muon CollidersPoster Presentation
Bunch compression is necessary for many accelerator applications, one of which being the creation of muons for the proposed muon collider. The design of a proton driver to deliver a short and very intense proton pulse to a target for the creation of muons is being developed. Some challenges with the proposed baseline design, notably the ambitious requirements for the radiofrequency system,...
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21/05/2026, 16:00MC5.D11: Code Developments and Simulation TechniquesPoster Presentation
There is a growing interest in differentiable simulations that have fast execution time and yield additional gradient information. Most differentiable codes use a single autodiff or truncated power series algebra library and then implement standard optics and particle tracking logic on top. This approach can be limiting due to performance/compilation/ease of use tradeoffs, especially when...
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Giovanni Dal Maso (European Organization for Nuclear Research)21/05/2026, 16:00MC4.A21: Hadron accelerators: Secondary BeamsPoster Presentation
The multi-purpose secondary beamlines of the SPS North Experimental Area are invaluable tools for a rich and diverse physics program, providing many different particle species and beam characteristics to fixed-target experiments and test-beam users. Many optical elements are required to enable such flexibility, posing a significant challenge in the design and optimization of the beamline...
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Jingyuan Zhao (Tsinghua University)21/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
Steady-state microbunching (SSMB) has been proposed as a new light source mechanism to generate high average power coherent radiation in electron storage rings. One approach to achieving SSMB is the reversible microbunching scheme, which introduces a laser-based energy modulation to electron bunches in a localized insertion section to form microbunching, and then uses a subsequent energy...
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Llibert Ribo (ALBA Synchrotron (Spain))21/05/2026, 16:00MC2.A24: Photon sources: Accelerators and Storage Rings, OtherPoster Presentation
ALBA Synchrotron Light Source will be upgraded into a diffraction limited machine by the replacement of the storage ring, which implies the reduction of the emittance by at least a factor of twenty. Compactness ratio of the magnetic elements has increased by a factor of 2. The new lattice has been designed with two big constrains. Firstly, keeping the same orbit length allows us to preserve...
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Feng Zhou (SLAC National Accelerator Laboratory)21/05/2026, 16:00MC5.D03: Calculations of EM fields Theory and Code DevelopmentsPoster Presentation
The RF analysis of the LCLS-II Gun fundamental power coupler (FPC), including the ceramic window, has been analyzed using SLAC-developed 3D parallel finite-element electromagnetic code suite, ACE3P. Comprehensive multipacting (MP) simulations were carried out to investigate potential discharge regions within the FPC coaxial line and window assembly. The results reveal strong two-point MP...
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Jonathan Edelen (RadiaSoft (United States)), Ningdong Wang (Cornell University)21/05/2026, 16:00MC5.D08: High Intensity in Linear Accelerators Space Charge, HalosPoster Presentation
Beam dynamics under collective effects such as space charge remains a computationally expensive challenge. We present a latent space surrogate model for collective beam dynamics that significantly accelerates these simulations. The method uses a variational autoencoder to compress 6D particle distributions into a low-dimensional latent space. A learned latent-space dynamical model then...
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Ian Martin (Diamond Light Source)21/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
The design performance of the 3.5 GeV Diamond-II low-emittance electron storage ring has been studied as a function of the linear and non-linear lattice tuning parameters. A Multi-Objective Genetic Algorithm (MOGA) has been implemented and refined to optimise both the beam lifetime and the injection efficiency for off-axis injection. The sextupole magnets have been further split into ten...
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Yingjie Dai (Tsinghua University)21/05/2026, 16:00MC5.D05: Coherent and Incoherent Instabilities Theory, Simulations, Code DevelopmentPoster Presentation
Steady-state microbunching (SSMB) is a promising mechanism for generating high-average-power coherent radiation by maintaining microbunches in a storage ring. In an SSMB laser modulator (LM), the interaction between electron bunches and the recirculating coherent undulator radiation can drive longitudinal beam instabilities, which may limit the overall performance. In this work, we investigate...
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Leandro Intelisano (European Organization for Nuclear Research)21/05/2026, 16:00MC4.A04: Hadron accelerators: Circular AcceleratorsPoster Presentation
In the framework of the High-Luminosity (HL) upgrade of the Large Hadron Collider (LHC), the bunch intensity from the injectors must be doubled with respect to the nominal design value. To meet these demands, the Super Proton Synchrotron (SPS) has been extensively upgraded to deliver $2.3 \times 10^{11}$ protons per bunch in multiple trains of up to 72 bunches. An extensive campaign of beam...
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Parker Landon (Boston University, Fermi National Accelerator Laboratory)21/05/2026, 16:00MC5.D09: Emittance manipulation, Bunch Compression and CoolingPoster Presentation
Investigation into laser-based manipulations on the longitudinal phase-space of bunches has been conducted experimentally at Fermilab’s linear accelerator. We continue to explore the advantages of using such a system in the application of beam-loss reduction. Particle bunches exiting the RFQ have been bunched to roughly 201 MHz or 4 ns FWHM. These particles then enter a small drift prior to...
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Lennert De Keukeleere (Belgian Nuclear Research Centre)21/05/2026, 16:00MC4.A17: Hadron accelerators: High Intensity AcceleratorsPoster Presentation
At the Nuclear Research Center SCK CEN in Belgium, the first phase of the MYRRHA project (an accelerator driven system) is under construction. Included in MYRRHA Phase 1 are a normal conducting injector linac (RFQ + CH cavities) and a super conducting linac (60 single spoke cavities), providing a CW proton beam of 4 mA and 100 MeV.
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In this contribution the recent changes to the MYRRHA Phase 1... -
Jack Phillips (University of California, Los Angeles)21/05/2026, 16:00MC5.D03: Calculations of EM fields Theory and Code DevelopmentsPoster Presentation
Precise 3D field measurements of large, complex magnet geometries are time-consuming and error-susceptible. For large magnets, it is common to record Hall probe data on a sparse grid, then use an interpolation algorithm to estimate field values at the remaining points. For common magnet geometries, such as quadrupoles and dipoles, linear interpolation often provides accurate results. However,...
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Sebastian C. Richter (Paul Scherrer Institute)21/05/2026, 16:00MC2.T15: Photon sources: Undulators and WigglersPoster Presentation
Recent developments at the Paul Scherrer Institute (PSI) include the creation of novel, compact, modular in-vacuum undulators for the upgraded Swiss Light Source, SLS 2.0. One of these new planar insertion devices has already been installed during the ongoing commissioning of SLS 2.0, providing light to its beamline: a 1-meter-long undulator with a 15 mm period length. Another 3-meter-long...
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Stephen Brooks (Brookhaven National Laboratory)21/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
It is currently planned to increase the energy of the CEBAF recirculating linear accelerator to 22GeV by adding two new recirculating arcs that contain multiple new energy passes. These new passes at six different energies must be matched to the existing linac simultaneously, as the beam is continuous (CW), so magnets cannot be ramped. This paper studies propagating several energies in the...
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Areso Sherjan (GSI Helmholtz Centre for Heavy Ion Research)21/05/2026, 16:00MC4.A24: Hadron accelerators: Accelerators and Storage Rings, OtherPoster Presentation
The ESR storage ring at GSI provides a variety of highly charged heavy ion beams over a wide range of $\beta_{rel}$ from $90\%$ down to $10\%$ to carry out atomic physics experiments [1]. According to experimental requirements the beam can be either stored and accumulated or decelerated. However, over the whole process of deceleration the beam intensity reduces by a significant factor, while...
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André Donadon Servelle (European Organization for Nuclear Research)21/05/2026, 16:00MC4.T19: Hadron accelerators: CollimationPoster Presentation
The Scattering and Neutron Detector at the LHC (SND@LHC), and the Forward
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Search Experiment (FASER), located on opposite sides of IP1 near the ATLAS detector, study high-energy neutrinos and dark matter produced from proton-proton
collisions. A key challenge for both experiments is the muon background from the collisions and proton losses in the LHC ring. In 2024, a reversal of the triplet... -
Trent Thompson (Oak Ridge National Laboratory)21/05/2026, 16:00MC5.D08: High Intensity in Linear Accelerators Space Charge, HalosPoster Presentation
Ongoing studies at the Spallation Neutron Source (SNS) Beam Test Facility (BTF) seek to characterize halo formation in the early stages of a high-power linac with specific focus on determining the contribution from mismatched beam transport and to replicate halo measurements using well-benchmarked particle-in-cell simulations. The BTF is a 2.5 MeV, 10- meter test beamline equipped with...
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Giovanni Iadarola (European Organization for Nuclear Research)21/05/2026, 16:00MC2.T15: Photon sources: Undulators and WigglersPoster Presentation
Insertion devices with longitudinally periodic fields—such as undulators, damping wigglers, and polarizing wigglers—play a central role in several stages of the FCC-ee injection chain. Accurate field models and efficient long-term tracking are required, as the strong longitudinal field variation cannot be captured reliably with standard multipole expansions. We introduce in the Xsuite...
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Lise Pauwels (European Organization for Nuclear Research, Université Libre de Bruxelles)21/05/2026, 16:00MC4.T19: Hadron accelerators: CollimationPoster Presentation
Studies are ongoing at CERN's Super Proton Synchrotron (SPS) to understand the origin and distribution of observed beam losses. The existing equipment in the machine allows for dedicated measurements to identify bottleneck regions with higher losses. A well-suited and accurate simulation model of the SPS is indispensable to be able to study the impact of underlying beam dynamics on the loss...
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Mr Leonard Thiele (European Organization for Nuclear Research, University of Rostock)21/05/2026, 16:00MC4.A09: Hadron accelerators: Muon Accelerators, Neutrino Factories, Muon CollidersPoster Presentation
The future multi-TeV muon collider facility will employ a superconducting radiofrequency (RF) system with thousands of cavities in the rapid-cycling synchrotron (RCS) chain. This RF system, common to both beams, will accelerate two counter-rotating $\mu^+$ and $\mu^-$ bunches simultaneously. Due to the high intensity of up to $2.7 \times 10^{12}$ particles per bunch, the induced voltage in...
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Nicolas Mounet (European Organization for Nuclear Research)21/05/2026, 16:00MC5.D11: Code Developments and Simulation TechniquesPoster Presentation
The CERN Proton Synchrotron (PS) accelerates proton and ion beams over an energy range that leads them to cross transition energy in routine operation. To improve the understanding of the transition energy crossing in the PS, detailed particle tracking simulations using the Xsuite code are being set up. The configuration of the simulation model incorporates, in stages, the complete...
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Alexander Ody (Argonne National Laboratory)21/05/2026, 16:00MC3.A16: Advanced techniques/Novel sources: Advanced ConceptsPoster Presentation
The Argonne Wakefield Accelerator (AWA) is a 1300 MHz, 65 MeV normal-conducting photoinjector LINAC supporting a broad research program in high-gradient RF acceleration, beam physics, and AI/ML-based accelerator operations. The facility produces electron bunches span-ning 1 pC to 100 nC, including high-charge (~100 nC, ~25 kA), high-brightness (~hundreds nm emittance), and arbitrarily shaped...
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Christoph Hessler (GSI Helmholtz Centre for Heavy Ion Research)21/05/2026, 16:00MC4.T12: Hadron accelerators: Beam Injection/Extraction and TransportPoster Presentation
The High-Energy Beam Transport at GSI (GSI-HEBT) is a system of transfer lines which delivers heavy ion beams from the SIS18 synchrotron to various experiments, the fragment separator and the storage rings ESR and CRYRING@ESR. The High-Energy Beam Transport for FAIR (FAIR-HEBT) will also branch off from the GSI-HEBT. This connection is currently under construction and requires several...
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1061. Monte-Carlo Simulations of Beamline-Induced Muon Backgrounds for the SHiP Experiment (THP4070)Florian Stummer (European Organization for Nuclear Research)21/05/2026, 16:00MC4.A21: Hadron accelerators: Secondary BeamsPoster Presentation
The Search for Hidden Particles (SHiP) experiment at the CERN SPS requires excellent control of muon backgrounds produced upstream of the detector. We present a first Monte-Carlo estimate of beamline-induced sources of muons from proton transport through the P42 beamline to the Beam Dump Facility (BDF) target. A detailed BDSIM model is used to evaluate muon fluxes at a plane upstream of the...
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Xueying Lu (Northern Illinois University)21/05/2026, 16:00MC5.D03: Calculations of EM fields Theory and Code DevelopmentsPoster Presentation
Mitigating collective beam effects such as coherent synchrotron radiation (CSR) is essential for generating high-brightness beams. In bunch compressors, several strategies have been proposed, including shielding by parallel plates in the dipole chamber, shaping the longitudinal current profile, and tuning the optical lattice. Recent work has shown that jointly optimizing multiple parameters...
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Pardis Niknejadi (Deutsches Elektronen-Synchrotron DESY)21/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
In echo-enabled harmonic generation, adjacent harmonics naturally carry comparable microbunching amplitudes. We investigate how coherent–synchrotron–radiation–induced gain shaping, controlled transverse structure in the seed lasers, and polarization tuning, tapering, and detuning of the radiators can be used to steer these neighboring harmonics into different FEL eigenmodes. Under suitable...
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Niketan Jakhar (Jawaharlal Nehru University)21/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
Electrostatic low-energy beam transport* (ELEBT) section as a part of future upgradation proposal in LINAC4 at CERN, is proposed to handle 45 keV H- ion beam with 70 mA max beam current. The design allows maximum input rms normalized emittance of 0.5 π mm mrad without significant growth. Dual einzel system is incooperated in deaccelerating-accelerating (DA) mode to control beam blow up...
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Jens Stadlmann (GSI Helmholtz Centre for Heavy Ion Research)21/05/2026, 16:00MC4.A04: Hadron accelerators: Circular AcceleratorsPoster Presentation
SIS18, the main synchrotron of the present GSI accelerator complex, will serve as booster for the FAIR facility. Several major and minor upgrade programs were realized since 2008 to improve SIS18 for this purpose. We will report on new capabilities of the synchrotron for present and future user operation, which were not directly attributed to FAIR injector operation.
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Namely, a spill feedback... -
Anton Malygin (Karlsruhe Institute of Technology)21/05/2026, 16:00MC2.A08: Photon sources: Linear AcceleratorsPoster Presentation
FLUTE (Ferninfrarot Linac- und Test-Experiment) is a compact and versatile linear accelerator at KIT designed for accelerator research and the generation of intense, ultrashort THz pulses for photon science. It will also serve as the injector for the Very Large Acceptance compact Storage Ring (VLA-cSR), which is being developed within the cSTART project. Stable RF power is essential for...
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Daniel Kallendorf (Technical University of Darmstadt, GSI Helmholtz Centre for Heavy Ion Research)21/05/2026, 16:00MC4.A20: Hadron accelerators: Radioactive IonsPoster Presentation
Next generation in-flight fragment separators like the Super-FRS are built with large apertures to accept high momentum spreads. The wide beam and momentum variation gives rise to large aberrations from non-linear effects, if not suppressed precisely.
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Models and simulations are able to predict most effects, but to achieve the highest performance, fine tuning of the ion optics with beams,... -
Sasha Horney (European Organization for Nuclear Research)21/05/2026, 16:00MC4.A04: Hadron accelerators: Circular AcceleratorsPoster Presentation
Optics errors from the interaction points of the LHC, where β* is most strongly squeezed, can significantly impact machine performance and protection. In anticipation of the HL-LHC, correction strategies extending up to dodecapole order are being targeted. Direct measurement of high-order resonance driving terms (RDTs) remains challenging, however. Applying crossing angle orbit bumps in the...
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Yitong Duan (Tsinghua University)21/05/2026, 16:00MC3.T02: Advanced techniques/Novel sources: Electron SourcesPoster Presentation
Multipactor in very-high-frequency (VHF) continuous-wave (CW) electron guns threatens stability, with non-resonant behavior and secondary electron yield (SEY) as key factors. This study clarifies non-resonant multipactor arises from weak local electric fields and disrupted electron-field resonance. It compares SEY models and adjusts the Furman model to match practical conditions. Combined with...
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Yuejing Huang (National Synchrotron Radiation Laboratory, USTC)21/05/2026, 16:00MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsPoster Presentation
The Hefei Advanced Light Facility (HALF) is a 4th-generation storage ring light source currently under construction in Hefei, China. Its storage ring utilizes a modified hybrid 6BA lattice. The HALF storage ring employs off-axis injection and is planned to operate in a full-coupling mode, which requires a large dynamic aperture and control of amplitude-dependent tune shifts. This paper...
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Simone Di Mitri (Elettra-Sincrotrone Trieste S.C.p.A., University of Trieste)21/05/2026, 16:00MC2.A08: Photon sources: Linear AcceleratorsPoster Presentation
The systematic comparison of two semi-analytical models of microbunching instability affecting electron beams in single pass or recirculating linear accelerators is reported. The comparison is comprehensive of numerous features of the instability, such as low and high gain contributions, either linearized or at second order, coherent synchrotron and edge radiation, Landau damping by transverse...
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Ming-Chyuan Lin (National Synchrotron Radiation Research Center)21/05/2026, 16:00MC2.A24: Photon sources: Accelerators and Storage Rings, OtherPoster Presentation
To utilize helium for experiments efficiently, our beamline people built a helium recovery system at the experimental hall of Taiwan Photon Source (TPS). This system includes four helium recovery spheres, each with a capacity of approximately 13.8 m^3, and is equipped with pressure relief valves. Considering the potential safety hazard of oxygen deficit in the vicinity when helium leak occurs,...
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Mr Jiangdong Li (Institute of Modern Physics, Chinese Academy of Sciences)21/05/2026, 16:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationPoster Presentation
Plasma-based acceleration (PBA) offers ultra-high accelerating gradients, but achieving high energy gain and beam quality remains challenging. This work presents the first investigation of PBA driven by heavy ion beams. Benefiting from high kinetic energy and charge density, heavy ions—such as those from the High Intensity heavy-ion Accelerator Facility (HIAF)—can excite wakefields up to 6...
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David El Khoury (Centre National de la Recherche Scientifique, Laboratoire d'Optique Appliquée, Institut Polytechnique de Paris)21/05/2026, 16:00MC2.A26: Photon sources: Compton sourcesPoster Presentation
Laser-driven Compton sources have emerged as a promising compact method for producing X-ray radiation with femtosecond pulse duration. They offer adjustable energy and bandwidth that can be controlled by the parameters of the electron beam and the colliding laser pulse. In addition, the transverse source size can be as small as a micrometer, making such sources of interest for high resolution...
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Lee Carver (European Synchrotron Radiation Facility)21/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
A low frequency oscillation at 360 Hz has been observed in the longitudinal plane at the ESRF. This oscillation has all the characteristics of a collective effect, for example it shifts with intensity, has a clear intensity threshold and can be modified by changing the bunch length. The third harmonic of this frequency overlaps with the synchrotron frequency, causing strong perturbations for...
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Adam Dixon (MAX IV Laboratory)21/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
The MAX IV injector, including a full energy linac
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and a photo gun, offers a unique capability to deliver low-
emittance, well-timed electron pulses suitable for injection.
This makes on-axis, off-phase, on-energy injection an at-
tractive option for future operation of the upgraded 3 GeV
storage ring, MAX 4U, where stronger focusing, reduced
magnet apertures, and narrow-gap undulators... -
Wenxuan Wu (Tsinghua University)21/05/2026, 16:00MC5.D10: Beam-Beam Effects Theory, Simulations, Measurements, Code DevelopmentsPoster Presentation
Traditional analytical models for intrabeam scattering (IBS) typically assume a Gaussian beam distribution in phase space. In this paper, we present an extended analytical IBS model that employs Hermite-Gaussian polynomials as basis functions to calculate the IBS diffusion coefficient for arbitrary phase space distributions. The generating function method is adopted to simplify the relevant...
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Jean-Luc Revol (European Synchrotron Radiation Facility)21/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
The European Synchrotron Radiation Facility – Extremely Brilliant Source (ESRF-EBS) represents a major upgrade that enables the scientific community to benefit from the first high-energy fourth-generation storage-ring light source. In December 2018, following three decades of operation, user activities were suspended for a 12-month shutdown to allow the installation of a completely new storage...
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Nuaman Shafqat (Elettra-Sincrotrone Trieste S.C.p.A.)21/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
We report here the Same-Order Modes (SOMs) and Higher-Order Modes (HOMs) analysis of the superconducting “crab cavity” module designed for the production of picosecond-long X-ray pulses with the Elettra 2.0 storage ring light source. The module consists of three radiofrequency (RF) transverse deflecting cavities operating at 3.0 and 3.25 GHz, corresponding to the 6th and 6.5th harmonic of the...
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Najmeh Mirian (Helmholtz-Zentrum Dresden-Rossendorf)21/05/2026, 16:00MC2.A25: THz sourcesPoster Presentation
We investigate the feasibility of extending the optical klystron (OK) concept into the terahertz (THz) regime, where strong radiation slippage and diffraction critically challenge efficient free-electron laser (FEL) operation. Numerical studies were performed for resonant wavelengths of 10, 30, and 100 µm using beam parameters relevant to the planned DALI facility. The results indicate that...
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Jincheng Xia (University of Science and Technology of China)21/05/2026, 16:00MC5.D03: Calculations of EM fields Theory and Code DevelopmentsPoster Presentation
The Hefei Advanced Light Source (HALF) covers the VUV to soft X-ray range and plans to replace two conventional 0.9 T B4 dipoles in the storage ring with 6 T superbends to extend the photon-energy reach. Increasing the peak field while keeping the field integral unchanged leads to significant changes in the field profile, which may affect the storage-ring optics and beam parameters. To...
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Yann Dutheil (European Organization for Nuclear Research)21/05/2026, 16:00MC4.T12: Hadron accelerators: Beam Injection/Extraction and TransportPoster Presentation
The Advanced Wakefield Experiment (AWAKE) is developing a novel plasma-based accelerator concept in which self-modulated proton bunches generate wakefields capable of accelerating electrons to energies relevant for particle physics. Completed in 2025, the Run 2b experimental phase aimed to demonstrate wakefield-amplitude stabilisation after saturation of the self-modulation process via a...
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xin xu (University of Science and Technology of China)21/05/2026, 16:00MC3.T39: Advanced techniques/Novel sources: Positron sourcesPoster Presentation
The longitudinal magnetic field profile of the Adiabatic Matching Device critically determines positron capture efficiency. While traditional designs prioritize the long adiabatic decay, this study investigates the often-overlooked non-adiabatic rise from the target exit field $B_0$, to the peak field $B_{\text{peak}}$. By systematically varying $B_0$, $B_{\text{peak}}$,, and the rise...
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Sydney Elkins (Illinois Institute of Technology)21/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
The objective of this project is to optimize the configuration of the horn focusing system used in neutrino beamlines to focus pions across a range of energies. This includes a study of the linearity of the analytical model for magnetic horn focusing put forth in the paper “Precision Beam Diagnostics at the NuMI Facility Using Muon Monitor Observations” by Katsuya Yonehara et al, as well as...
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Sabrina Appel (GSI Helmholtz Centre for Heavy Ion Research)21/05/2026, 16:00MC4.T12: Hadron accelerators: Beam Injection/Extraction and TransportPoster Presentation
In the SIS18 heavy-ion synchrotron at GSI, loss-induced vacuum degradation and reduced beam lifetime limit high-intensity operation with uranium ions. During multi-turn injection (MTI), even small localized losses can trigger pressure bump instabilities, making optimized injection control essential to reach FAIR intensity goals. We present a comprehensive study on optimizing the MTI process in...
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Junha Kim (Ulsan National Institute of Science and Technology, Pohang University of Science and Technology)21/05/2026, 16:00MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsPoster Presentation
Recent upgrades of synchrotron light sources aim to achieve ultralow emittances, requiring strong magnet strengths that inevitably lead to severe nonlinear effects. Consequently, securing a sufficient Touschek lifetime has become a critical challenge for storage rings, including the Korea-4GSR. In this study, we performed systematic scans of tune and chromaticity to identify optimal working...
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Suzanna Percival (Science and Technology Facilities Council, Cockcroft Institute)21/05/2026, 16:00MC2.T02: Photon sources: Electron SourcesPoster Presentation
The UK XFEL conceptual design and options analysis (CDOA) process has recently been completed. The UK XFEL design uses a superconducting linac operating with up to a 1 MHz repetition rate electron beam and demands beyond state of the art electron beam quality. This leads to strict requirements on the injector. The requirement for MHz repetition rates restricts the electron source technology to...
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Ivan Podadera (IFMIF-DONES Spain Consortium)21/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
IFMIF-DONES is an ESFRI facility based on a 40 MeV, 5 MW beam power deuteron accelerator and a liquid lithium target currently under construction in Granada (Spain) as part of the European roadmap to fusion electricity. Its main goal is to characterize and qualify materials under a neutron field with an induced damage similar to the one expected in a fusion reactor, developing a material...
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Dr Weilun Qin (Institute of High Energy Physics, Chinese Academy of Sciences)21/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Invited poster
The European XFEL combines a superconducting linear accelerator and long variable-gap undulators to deliver hard X-ray pulses at megahertz repetition rates in 10 Hz burst mode. Building on this capability, we have recently developed the so-called self-chirping operation mode at the SASE2 beamline to generate isolated high-power attosecond hard X-ray pulses. This contribution presents an...
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Vitaliy Goryashko (Uppsala University)21/05/2026, 16:00MC2.A29: Ultrafast electron diffraction and ultrafast electron microscopyInvited poster
Compact electron sources with cutting-edge beam quality are unlocking higher-fidelity experiments, both directly with electrons and indirectly via bright, compact X-ray generation. A prime example is ultrafast electron diffraction (UED), which relies on sub-picosecond, low-emittance bunches in the keV–MeV range to probe structural dynamics. Similar beam requirements underpin inverse Compton...
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Elham Salehi (European Spallation Source)21/05/2026, 16:00MC4.A09: Hadron accelerators: Muon Accelerators, Neutrino Factories, Muon CollidersPoster Presentation
The ESS neutrino Super Beam (ESSnuSB) project aims to produce a highly intense, second-generation neutrino beam optimized for precision measurement at the second neutrino oscillation maximum, providing an enhanced capability to discover CP violation in the leptonic sector and to measure the CP violating phase with high precision. ESSνSB will be integrated into the ESS accelerator facility,...
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Reyes Alemany-Fernandez (European Organization for Nuclear Research)21/05/2026, 16:00MC4.A24: Hadron accelerators: Accelerators and Storage Rings, OtherPoster Presentation
In 2025 CERN’s ion injector complex delivered both oxygen and neon ion beams to the Large Hadron Collider (LHC) for the first time, with oxygen ion beams only previously having been accelerated in the late 1980s for Super Proton Synchrotron (SPS) fixed-target experiments at CERN. In addition to the initially planned oxygen run, a run with a neon isotope with the same charge to mass ratio as...
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Zhouyu Zhao (National Synchrotron Radiation Laboratory)21/05/2026, 16:00MC5.D09: Emittance manipulation, Bunch Compression and CoolingPoster Presentation
The Hefei Advanced Light Facility (HALF) is a diffraction-limited storage ring light source, and the random adjustments in insertion device gaps can result in significant beam emittance variations. In prior work, we introduced a novel emittance compensation scheme based on the quantum excitation effect, utilizing a short variable-gap wiggler and a fixed dispersion. This paper investigates the...
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Wolfgang Höfle (European Organization for Nuclear Research)21/05/2026, 16:00MC4.A11: Hadron accelerators: Beam CoolingPoster Presentation
The Antiproton Decelerator (AD) is part of CERN’s antimatter factory which decelerates antiprotons from a momentum of 3.57 GeV/c to 100 MeV/c. Stochastic cooling is essential to reduce longitudinal and transverse emittances at the momentum plateaus in first part of the cycle. The present hardware of the stochastic cooling system is optimized for a momentum of 3.57 GeV/c while it has reduced...
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21/05/2026, 16:00MC4.A04: Hadron accelerators: Circular AcceleratorsPoster Presentation
In 2025, lead-ion (Pb-ion) physics was performed at multiple CERN experimental facilities, including East and North Experimental Areas, and the Large Hadron Collider (LHC) experiments. Success of this extensive program depended on the reliable operation of the full Pb-ion injector chain, comprising LINAC3, LEIR, the PS, and the SPS. Throughout the 2025 run, the injector complex demonstrated...
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Katrin Thoma (Goethe University Frankfurt, GSI Helmholtz Centre for Heavy Ion Research)21/05/2026, 16:00MC4.A16: Hadron accelerators: Advanced ConceptsPoster Presentation
Production, confinement and control of a long static electron column in Gabor-lens device GL2000 were discussed and presented in previous IPAC conferences. Reachable electron densities of about n~2.5*10e14me-3 and single pass ion beam transport with focusing in MeV range were demonstrated in 2025. The present study investigates the possible use of electron plasmas in periodic systems such as...
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Dmitrii Rabusov (Diamond Light Source)21/05/2026, 16:00MC2.A04: Photon sources: Circular AcceleratorsPoster Presentation
This work demonstrates that periodic transient beam loading can affect bunch lengthening as well as cause its variation over time in Diamond-II. The instability can be eliminated by increasing the detuning of the harmonic cavity. The results suggest that introducing longer gaps in the filling pattern might eliminate the instability, but this will reduce the effectiveness of the passive...
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Joachim Keil (Deutsches Elektronen-Synchrotron DESY)21/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
The synchrotron light source PETRA III is one of the core facilities at DESY and offers scientists outstanding opportunities for experiments with hard X-rays of very high brilliance since 2009. The 25 beamlines provide excellent and diverse experimental methods for more than 3500 users per year. The light source is operated mainly in two operation modes with 480 and 40 bunches at a beam energy...
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Sara Karbassi (ISIS Neutron and Muon Source)21/05/2026, 16:00MC4.A04: Hadron accelerators: Circular AcceleratorsPoster Presentation
The ISIS Neutron and Muon source produces pulsed neutrons and muons for multi-disciplinary scattering and spectrometry experiments. Up to 3e13 protons per pulse are accumulated over a ~200 µs injection period, then accelerated from 70 to 800 MeV in the 50 Hz rapid cycling synchrotron. This beam is then extracted to one of two spallation neutron targets.
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An electrostatic chopper is installed... -
Rong Xiang (Helmholtz-Zentrum Dresden-Rossendorf)21/05/2026, 16:00MC2.T02: Photon sources: Electron SourcesPoster Presentation
DALI is an accelerator-based terahertz (THz) light source that uses multiple superconducting accelerators to drive CW electron bunches through undulators to emit ultra-intense THz pulses, including two ELBE SRF photo injects as the e- sources for high bunch charge beamline and for the UED, respectively. It requires a versatile portfolio of photocathodes to support diverse electron gun...
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Dr Weijie Fan (Shanghai Institute of Applied Physics), Duan Gu (Shanghai Advanced Research Institute)21/05/2026, 16:00MC3.T02: Advanced techniques/Novel sources: Electron SourcesPoster Presentation
The photocathode in-situ research apparatus integrates preparation, characterization, and environmental control under ultra-high vacuum to prevent surface contamina-tion, establishing a real-time “preparation-monitoring-regulation” closed-loop for high-performance photocath-odes such as Cs2Te. Following comprehensive commis-sioning, which is utilized for Cs2Te photocathode prepara-tion, CsBr...
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Margarita Bulgacheva (Technical University of Darmstadt)21/05/2026, 16:00MC2.T02: Photon sources: Electron SourcesPoster Presentation
We present a simulation study of a nanostructured plasmonic copper photocathode for use in the new photoinjector that is presently being developed for the high-duty-cycle operation upgrade of the European XFEL. The simulations are based on a spatially resolved photoemission model using the Fowler-DuBridge formalism and including the Schottky effect induced by the accelerating field on the...
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Yan Wang (Huazhong University of Science and Technology)21/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
This paper presents the physical design of the Main Linac (ML) for the STCF, accelerating 1~GeV electron and positron beams to 1--3.5~GeV for both off-axis (1~nC) and swap-out (8.5~nC) injection. An interleaved scheme divides 36 accelerating structures into two groups, independently controlling energy gain and longitudinal phase space for each species. At the nominal 2~GeV output, simulations...
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Peizhi Fang (Tsinghua University)21/05/2026, 16:00MC5.D05: Coherent and Incoherent Instabilities Theory, Simulations, Code DevelopmentPoster Presentation
The Steady-State Micro Bunching (SSMB) scheme holds great promise for generating high-power extreme ultraviolet (EUV) radiation. To achieve a 1 kW EUV output, a storage ring operating with an average current of 1 A and harmonic cavities for bunch lengthening is required to mitigate intra-beam scattering (IBS). However, the combination of high beam current and harmonic cavities induces severe...
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Matthias Gross (Deutsches Elektronen-Synchrotron)21/05/2026, 16:00MC2.A08: Photon sources: Linear AcceleratorsPoster Presentation
At the Photo Injector Test facility at DESY in Zeuthen (PITZ) 22 MeV, high brightness electron beams are generated to serve mainly as a test facility for e.g. the European XFEL. Low emittance beams with bunch charges of less than a pC up to several nC are generated in an L-band photogun, which can provide bunch trains (4.5 MHz bunch repetition rate) of up to 1 ms in length at 10 Hz repetition...
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Keon Hee Kim (Grand Accélérateur National d'Ions Lourds)21/05/2026, 16:00MC5.D05: Coherent and Incoherent Instabilities Theory, Simulations, Code DevelopmentPoster Presentation
In a 4th generation electron storage ring, harmonic cavities are often employed for increasing bunch length and beam lifetime. Effective bunch lengthening can be achieved when the first derivative of total accelerating voltage is near zero. However, the accelerating voltage fluctuation due to transient beam-loading (TBL) effect can affect the bunch lengthening in the harmonic cavity system....
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Shengjin LIU (Spallation Neutron Source Science Center, Institute of High Energy Physics, University of Chinese Academy of Sciences)21/05/2026, 16:001MC3.T01: Advanced techniques/Novel sources: Proton and Ion SourcesPoster Presentation
A standard Interdigital Drift Tube Linac accelerates particles in a pi-mode cavity using drift tubes suspended alternately from opposite walls. It typically requires external magnetic quadrupoles in a Focusing-Drift-Defocusing-Drift lattice for transverse focusing.
The RF-focused DTL innovates by shaping the drift tubes themselves as RF quadrupoles (like a short section of an RFQ). This...
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Vadim Gubaidulin (Synchrotron soleil)21/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
A substantial fraction of the insertion devices (IDs) installed in SOLEIL will remain in operation during the first phase of the SOLEIL II project. Studies of their impact on the upgraded lattice have been initiated in order to define the preliminary technical requirements for compensation. In this paper, the ID-induced focusing and coupling effects are characterized, followed by...
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Sangya Li (University of Science and Technology of China)21/05/2026, 16:00MC5.D10: Beam-Beam Effects Theory, Simulations, Measurements, Code DevelopmentsPoster Presentation
To achieve its design luminosity of $1 \times 10^{35} \text{cm}^{-2}\text{s}^{-1}$, the Super Tau-Charm Facility (STCF) currently under design in China employs the crab-waist collision scheme with an ultra-low $\beta_y^*$. While this configuration enables a beam-beam parameter of $\xi_y \sim 0.1$, it also increases sensitivity of luminosity to beam-beam effects and their interplay with...
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Zeyuan Meng (University of Science and Technology of China)21/05/2026, 16:00MC5.D12: Electron Cloud and Trapped Ion EffectsPoster Presentation
We present simulation studies on the buildup of the electron cloud in the Super Tau-Charm Facility (STCF), considering the effects of key accelerator components and parameters. These include the solenoid, dipole, quadrupole, and sextupole magnetic fields, the presence of an antechamber, and the properties of chamber wall coatings. A preliminary estimate of the instability threshold for the...
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Yanxu Wang (Shanghai Institute of Applied Physics, Chinese Academy of Sciences, University of Chinese Academy of Sciences)21/05/2026, 16:00MC5.D10: Beam-Beam Effects Theory, Simulations, Measurements, Code DevelopmentsPoster Presentation
The storage ring–based coherent light source (SRCLS) operates under extreme conditions: ultra‑low emittance, short bunches, high current, and strong damping. In such a regime, collective effects become critically important. This paper presents a preliminary study of the key collective effects in the SRCLS, including the Touschek effect, intra‑beam scattering, resistive‑wall impedance, and ion...
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Dr Marco Modica (Elettra-Sincrotrone Trieste S.C.p.A.)21/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
Picosecond-long X-ray pulses of moderate intensity and high repetition rate are highly sought after by the light source community, especially for time-resolved fine spectroscopic analysis of matter in the linear response regime. We investigate the upgrade of the Elettra 2.0 diffraction-limited storage ring light source to supercon-ducting radiofrequency transverse deflecting cavities...
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liu yuanhao (Shanghai Institute of Applied Physics, Chinese Academy of Sciences)21/05/2026, 16:00MC3.T25: Advanced techniques/Novel sources: LasersPoster Presentation
Particle accelerators are key tools in scientific research, medicine, and industry. However, mainstream accelerator technologies face challenges such as large footprints and high costs. Dielectric laser accelerators (DLAs) utilize the interaction between high-frequency lasers and nanograting structures in dielectric media to generate high-intensity near-fields with electric field strengths...
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Dmitry Bazyl (Deutsches Elektronen-Synchrotron DESY)21/05/2026, 16:00MC2.T02: Photon sources: Electron SourcesPoster Presentation
A copper photocathode based on bulk Cu(100) substrate
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with a 50 𝜇m-diameter nanostructured region was fabricated
and integrated into an S-band radio-frequency gun. We
report the procedure for production and preparation of high-
quality copper cathodes with nanostructured area compatible
with state-of-the-art S-band RF gun. Experimental results
indicate absence of increased dark current... -
Haisheng Xu (Institute of High Energy Physics)21/05/2026, 16:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationPoster Presentation
Plasma acceleration is an innovative principle characterized by high acceleration gradients, which has attracted significant interest from major accelerator laboratories worldwide, because of its potential to increase accelerator energy and reduce size. One promising approach involves using existing conventional accelerators as external injectors for plasma-based accelerators, a topic of...
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Elisabeth Renner (TU Wien)21/05/2026, 16:001MC4.T12: Hadron accelerators: Beam Injection/Extraction and TransportPoster Presentation
The recent availability of mixed 4He2+ and 12C6+ beams for research on online treatment monitoring in carbon ion therapy is introducing new challenges for slow extraction from synchrotrons. Ideally, the mixed beam should be extracted with a constant helium-to-carbon ratio over the entire spill. This is complicated by species-dependent dynamics: the two ion species feature an effective rigidity...
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Jack Phillips (Particle Beam Physics Lab (PBPL)), Pratik Manwani (University of California, Los Angeles)21/05/2026, 16:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationPoster Presentation
Space plasma processes generate broad, structured electron energy spectra observed in near-planetary environments, yet reproducing these distributions in controlled laboratory settings remains challenging. Plasma wakefield acceleration (PWFA) provides a promising platform for generating analogous spectra through beam–plasma interactions. The beam parameters available at the MITHRA electron...
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Mr Yuta Kikuchi (Saitama University)21/05/2026, 16:00MC5.D12: Electron Cloud and Trapped Ion EffectsPoster Presentation
The SCRIT electron scattering facility at RIKEN RI Beam Factory is a unique facility dedicated to electron scattering off unstable nuclei. The SCRIT (Self-Confining Radioactive isotope Ion Target) method utilizes the phenomenon of ion trapping within an electron storage ring. This innovative technique forms a target by replacing the residual gas in the ring with incident radioactive isotope...
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Joseph Bradley III (Los Alamos National Laboratory)21/05/2026, 16:00MC5.D03: Calculations of EM fields Theory and Code DevelopmentsPoster Presentation
This paper shows the results of measurement on the 805 MHz Couple Cavity LINAC (CCL) at the Los Alamos Neutron Science Center (LANSCE). The CCL was installed and commissioned in 1972, and it has been in operation with regular yearly operations cycles for over half a century. This test was done with a Vector Network Analyzer (VNA), the results of the measurement are presented in the form of...
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Kalyan Tirumalasetty (University of Colorado Denver)21/05/2026, 16:00MC3.A16: Advanced techniques/Novel sources: Advanced ConceptsPoster Presentation
Extreme plasmons* that are nonperturbative excitations of quantum electron gas inherent in conductive, nanofabricated materials, open unprecedented PetaVolts per meter fields. PV/m fields enable concepts such as a collider on a chip, nano-wiggler based gamma-ray lasers, opening the vacuum using high-field polarizability etc.
This technique that relies on emergent properties of the...
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Arnold Kruschinski (Helmholtz-Zentrum Berlin für Materialien und Energie)21/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
Steady-state microbunching (SSMB) has been proposed as a scheme to generate high average power coherent synchrotron radiation at short wavelengths from an electron storage ring. To evaluate the feasibility of this scheme, a proof-of-principle experiment is conducted at the Metrology Light Source (MLS) in Berlin, the first phase of which (PoP I) was concluded in 2024. PoP I utilized a...
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Gustavo Perez Segurana (MAX IV Laboratory)21/05/2026, 16:00MC2.A04: Photon sources: Circular AcceleratorsPoster Presentation
Multi-bend achromat lattices allow for the design of extremely low-emittance electron storage rings and are a cornerstone of the performance of storage-ring-based synchrotron light sources. As part of the proposed MAX IV upgrade, MAX4U, we revise the impact of the insertion devices (IDs) on the beam. We extend the kickmap-based tracking analysis by including the effects of radiation and...
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Michael Bousonville (Deutsches Elektronen-Synchrotron DESY)21/05/2026, 16:00MC2.A04: Photon sources: Circular AcceleratorsPoster Presentation
A third harmonic system is planned for PETRA IV. One possible option for the third harmonic cavity is a novel single-mode cavity based on the choke-mode principle. The DESY device developed on this basis offers the following advantages over alternative designs:
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a) Very strong suppression of all unwanted modes.
b) Coupling factor adjustable during operation.
c) The wall currents induced by... -
Mr Leonard Thiele (University of Rostock)21/05/2026, 16:00MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsPoster Presentation
The Python-based Beam Longitudinal Dynamics (BLonD) simulation suite is an open-source framework for modelling the motion of charged particles in circular accelerators. BLonD has been in use since 2014 and is utilised successfully at several accelerator facilities such as J-PARC, ISIS, and CERN. Furthermore, BLonD is applied for the design of new synchrotrons such as the Future Circular...
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Dr Luc Perrot (Université Paris-Saclay, CNRS/IN2P3, IJCLab)21/05/2026, 16:00MC4.A21: Hadron accelerators: Secondary BeamsPoster Presentation
The ALTO research platform at the Laboratoire de physique des 2 infinis Irène Joliot Curie (IJCLab) is dedicated to wide-ranging research in nuclear physics, nuclear astrophysics and interdisciplinary activities such as health physics. ALTO-LEB is the low energy beam area of ALTO where neutrons rich exotic nuclei are studied. This paper focuses on the final analysis of beam emittance...
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Patrick Schreiber (Karlsruhe Institute of Technology)21/05/2026, 16:00MC2.A24: Photon sources: Accelerators and Storage Rings, OtherPoster Presentation
The KARA storage ring is operated as an accelerator test facility for research and development. It consists of four long and four short straight sections and presently operates five insertion devices (IDs). Four IDs are placed in the long straights with low vertical beta functions and one wiggler resides in a short straight section with a high vertical beta function. For future research and...
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Sara Sainz Perez (European Organization for Nuclear Research)21/05/2026, 16:00MC4.A04: Hadron accelerators: Circular AcceleratorsPoster Presentation
In preparation for High Luminosity (HL) LHC operation from 2030, a dedicated injector reliability run was undertaken in 2025 in the LHC injectors to evaluate the beam stability and reproducibility following the upgrade of the LHC injectors. The objective of this campaign was to demonstrate the capability of Linac4, PSB, PS, and SPS to deliver beams for the HL-LHC in a stable and reproducible...
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Julian Rausch (Goethe University Frankfurt)21/05/2026, 16:00MC4.A24: Hadron accelerators: Accelerators and Storage Rings, OtherPoster Presentation
In synchrotrons and storage rings, the longitudinal dynamics of bunched beams is crucial in understanding beam loss. A fast current transformer (FCT) can be used to monitor the longitudinal bunch distribution. We use consecutive FCT measurements to analyze the beam’s oscillations in the RF
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bucket at the Experimental Storage Ring (ESR) at GSI. At varying amplitudes of oscillation, the tunes in... -
Nuria Fuster-Martinez (Instituto de Física Corpuscular)21/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
This study presents a comprehensive methodology for the RF design and optimization of a 3 GHz SCDTL structure in terms of the modified Poynting vector $S_c$ and the effective shunt impedance $ZTT$. By systematically refining the geometry of both accelerating and side-coupling cavities, the design achieves a maximized effective shunt impedance and accelerating gradient, while ensuring...
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Cornel Dinu Cirdei (Horia Hulubei National Institute for R and D in Physics and Nuclear Engineering)21/05/2026, 16:00MC2.A08: Photon sources: Linear AcceleratorsPoster Presentation
The RF linac for the ELI - Gamma Beam Source (ELI-GBS) is being installed in Bucharest-Magurele (Romania). TW accelerating structures and SLED cavities are powered by klystrons via waveguide network that includes directional couplers for power monitoring and feedback. Before RF conditioning can begin, the linac must be properly tuned in terms of the RF phase and frequency.
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The waveguide... -
Martin Collet (CEA DAM Île-de-France, Université Paris-Saclay, CEA, Laboratoire Matière en Conditions Extrêmes)21/05/2026, 16:00MC2.A08: Photon sources: Linear AcceleratorsPoster Presentation
ELSA electron linear accelerator, operated at CEA/DAM for over three decades, is currently undergoing a major upgrade of its RF accelerating structures with the objective of enhancing operational reliability, availability, and performance.
The first phase targeted the second accelerating stage and involved the replacement of the 433 MHz klystron modulator. The new modulator, developed by...
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Stefano Marangoni (National Center for Oncological Hadrontherapy)21/05/2026, 16:00MC4.T12: Hadron accelerators: Beam Injection/Extraction and TransportPoster Presentation
CNAO is one of the few hadron therapy centres all around the world that produce both proton and carbon ions beams. It is based on a synchrotron in which the beams are extracted by a slow extraction mechanism that uses either a betatron core or an electrostatic exciter re-ferred to as RF-KO (Radio-Frequency Knock Out).
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The RF-KO extraction method has been commissioned and in May 2024 we... -
Sabrina Appel (GSI Helmholtz Centre for Heavy Ion Research)21/05/2026, 16:00MC4.T12: Hadron accelerators: Beam Injection/Extraction and TransportPoster Presentation
We present advancements in the data-driven Model Predictive Control (MPC) framework for optimizing multi-turn injection (MTI) into the SIS18 synchrotron. Building on our prior work on safe, sample-efficient optimization, we systematically investigate the impact of current noise and transverse emittance fluctuations. By incorporating realistic error models derived from dedicated measurements of...
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Joseph Devlin (Cornell University (CLASSE))21/05/2026, 16:00MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsPoster Presentation
We present SciBmad, a new accelerator physics software library developed to meet the needs of all accelerator design, analysis, and virtual modeling. SciBmad consists of a set of modular packages featuring fully differentiable and CPU/GPU-parallelized symplectic integrators, spin tracking and radiation, flexible and differentiable lattice definitions, nonlinear normal form analysis tools with...
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Austin Hoover (Oak Ridge National Laboratory)21/05/2026, 16:00MC5.D08: High Intensity in Linear Accelerators Space Charge, HalosPoster Presentation
This work proposes the use of generative models and differentiable simulations to search for smooth equilibrium phase space distributions in arbitrary external fields. The model parameters are optimized using a two-term loss function: one term suppresses density fluctuations, while a second term pulls the solution toward some target value, for example, to encourage smoothness. As an initial...
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Kyle Hazelwood (Fermi National Accelerator Laboratory)21/05/2026, 16:001MC4.T19: Hadron accelerators: CollimationPoster Presentation
A novel transverse beam collimation system has been installed and commissioned in the Fermilab Main Injector 8 GeV beamline. The new collimation system compliments existing collimators and helps ensure the Fermilab Main Injector and Recycler accelerators are capable of handling the increased beam power promised from the Fermilab PIP-II upgrade, currently underway. This paper will present the...
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Yongjun Li (Brookhaven National Laboratory)21/05/2026, 16:00MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsPoster Presentation
We revisit the nonlinear lattice design approach for the National Synchrotron Light Source II (NSLS-II) storage ring. By suppressing chaos, we identify alternative sextupole configurations to the original design, which relied on the conventional strategy of simultaneously minimizing Resonance Driving Terms (RDT) and Amplitude-Dependent Detuning (ADD). These alternatives achieve comparable...
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Ivan Karpov (European Organization for Nuclear Research)21/05/2026, 16:00MC4.A04: Hadron accelerators: Circular AcceleratorsPoster Presentation
The AWAKE facility utilises high-intensity single bunches to drive resonant wakes in plasma for the acceleration of electrons. Twice shorter bunches are required from the CERN Super Proton Synchrotron (SPS) for the next phase of the experimental programme. In addition, the reproducibility of the bunch distribution and intensity is essential. This contribution summarises the key improvements to...
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Jens Voelker (Helmholtz-Zentrum Berlin für Materialien und Energie)21/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
BESSY III will be a fourth-generation synchrotron light source that aims to deliver diffraction-limited, extremely brilliant soft X-rays, with the goal of becoming a key instrument for discoveries in materials and energy research. During the current design phase, extensive simulation studies are being performed to evaluate and improve the robustness and reliability of the candidate storage...
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Clara-Marie Alvinerie (Los Alamos National Laboratory)21/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
The Los Alamos Neutron Science Center (LANSCE) target stations require reliable beam quality to carry out experiments under optimal conditions. Maintaining the bunch structure through the beam transport from the 800-MeV Linac to the target stations is crucial. Currently, beam transport tuning is the primary tool to control the beam, although multiple simulation tools are being developed as...
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Nathan Cook (RadiaSoft (United States))21/05/2026, 16:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationPoster Presentation
Structured plasma channels are an essential technology for driving high-gradient plasma accelerator and for guiding charged particle beams in advanced concept accelerators. Carefully designed lasers can permit the generation of long plasma columns known as hydrodynamic, optically-field-ionized (HOFI) channels, which feature low on-axis densities and narrow radial extent. We present the...
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Jan Wirtz (GSI Helmholtz Centre for Heavy Ion Research, Technical University of Darmstadt)21/05/2026, 16:00MC4.A20: Hadron accelerators: Radioactive IonsPoster Presentation
Starting in 2027, the Super-FRS will produce and separate rare isotopes for nuclear physics experiments at the Facility for Antiproton and Ion Research (FAIR). To reach isotopes further toward the nuclear drip line, the separator uses heavy-ion beams of higher energy (>1.5 GeV/u) and intensity (>3*10^11 238U/s) compared to previous facilities. These primary beams, as well as the secondary...
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Joseph Devlin (Cornell University (CLASSE))21/05/2026, 16:00MC5.A30: Beam Dynamics: Polarized beamsPoster Presentation
In many modern accelerators, intrabeam scattering (IBS) leads to measurable changes in a beam’s dimensions during operation. For a Gaussian beam, there are many well-known methods to calculate the growth rates. However, while growth rates are very useful, they generally do not provide insight into how IBS interacts with effects beyond linear dynamics. To avoid this limitation, we apply IBS...
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Elham Salehi (European Spallation Source)21/05/2026, 16:00MC4.T12: Hadron accelerators: Beam Injection/Extraction and TransportPoster Presentation
In the ESS neutrino super beam (ESSnuSB) project, an efficient injection into the accumulator ring is required for minimizing beam loss during injection, reducing capital cost, and simplifying the overall project. To meet these requirements, the Liouvillian Injection Optimization (LIO) method has been developed for direct proton injection into the accumulator using a 4D multi-turn accumulation...
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Jingyu Tang (University of Science and Technology of China)21/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
Due to the complex optics and strong magnets of the Super Tau-Charm Facility (STCF) collider rings, the luminosity and beam dynamics are highly sensitive to magnetic field errors. Based on error sensitivity studies for the STCF and error tolerances adopted in other collider rings, a preliminary error budget has been established. This paper presents error correction results for STCF collider...
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Sumaira Zeeshan (Deutsches Elektronen-Synchrotron DESY)21/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
Developments of a superconducting radio-frequency (SRF) photoinjector for future continuous-wave (CW) operation of the European XFEL are currently underway at DESY. A superconducting L-band 1.6-cell cavity is considered as a high-brightness electron source capable of supporting CW operation and meeting the stringent beam-quality requirements of cutting edge XFEL facilities. Given the...
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Dinghui Su (Shanghai Institute of Applied Physics)21/05/2026, 16:001MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsPoster Presentation
Bimodal accelerating structure capable of supporting two resonant modes in a single cell is investigated as a compact solution for simultaneous acceleration and manipulation of the bunch length. Beam dynamics simulations performed with RF-Track are used to quantify the longitudinal phase-space evolution and are benchmarked against a conventional separated-function configuration. The bimodal...
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Jincheng Xiao (University of Science and Technology of China)21/05/2026, 16:00MC5.D05: Coherent and Incoherent Instabilities Theory, Simulations, Code DevelopmentPoster Presentation
In high-current electron storage rings, tuning the radio-frequency (RF) cavity’s proportional-integral (PI) controller is crucial for beam stability. Traditional online trial-and-error methods risk beam loss due to improper parameter settings. This paper proposes a pre-commissioning method based on particle-tracking simulations that self-consistently model the coupled beam-cavity-feedback...
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Juwan Kim (Institute for Rare Isotope Science)21/05/2026, 16:00MC5.D11: Code Developments and Simulation TechniquesPoster Presentation
There have been concerns regarding the uncertainties of Q-factor measurements in vertical test system when the coupling beta is too low or too high. Forward and reverse power readings can be affected by cross-contamination in the bidirectional coupler and by re-reflection from the circulator, resulting in increased measurement uncertainty. This uncertainty becomes more significant when the...
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David Ondreka (GSI Helmholtz Centre for Heavy Ion Research)21/05/2026, 16:00MC4.A16: Hadron accelerators: Advanced ConceptsInvited poster
In this contribution, we report on the successful simultaneous acceleration of a beam composed of two different ions with unequal mass-to-charge ratio within the same cycle of the heavy ion synchrotron SIS18 at GSI. While acceleration of multiple charge states of a single ion species has been accomplished in linear accelerators, in a synchrotron this has never been done before to the knowledge...
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Lars Bozyk (GSI Helmholtz Centre for Heavy Ion Research)21/05/2026, 16:001MC4.A04: Hadron accelerators: Circular AcceleratorsPoster Presentation
SIS100 is a new and unique heavy ion synchrotron presently under construction at GSI, Darmstadt. It becomes the main accelerator of the international FAIR project and shall provide intense beams of all ions from Protons to Uranium. SIS100 is a fast ramped superconducting synchrotron and comprises lots of new technical features dedicated to the operation with high intensity, low charge state...
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Vladimir Nagaslaev (Fermi National Accelerator Laboratory)21/05/2026, 16:00MC4.T12: Hadron accelerators: Beam Injection/Extraction and TransportPoster Presentation
Following the successful completion of the Muon g-2 experiment run at Fermilab, the Muon Campus facili-ty has been reconfigured from delivering 3 GeV muon beams to the g-2 storage ring to providing slow-extracted 8 GeV proton beam spills for the Mu2e ex-periment. The first full-scale commissioning run with slow extraction was conducted during the 2025 run, followed by the second run in early...
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Jom Luiten (Eindhoven University of Technology)21/05/2026, 16:00MC2.A26: Photon sources: Compton sourcesPoster Presentation
At Eindhoven University of Technology, a lab-based tabletop x-ray source has been commissioned based on inverse Compton scattering (ICS). In the ICS process monochromatic x-rays are produced by colliding relativistic electron bunches with intense laser pulses. This compact and tunable source bridges the gap between conventional lab sources and synchrotrons, making advanced x-ray diagnostics...
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Laurent Nadolski (Synchrotron soleil)21/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
SOLEIL, the French 2.75 GeV third-generation synchrotron light source, continues to operate as a high-performance research infrastructure supporting both academic and industrial communities. This contribution reviews the 2025 operational achievements, with emphasis on accelerator stability, availability, and the delivery of reliable photon beams to 29 beamlines. Key performance indicators and...
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Julian Rausch (Goethe University Frankfurt)21/05/2026, 16:00MC4.T01: Hadron accelerators: Proton and Ion SourcesPoster Presentation
The generation of high intensity ion beams requires high
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density plasma in the ion source. Earlier studies have
shown how high plasma densities can be achieved with a
combined RF- and arc-discharge without using a filament
as an electron emitter. While space charge compensation in
the extraction region could benefit the space charge limited
extraction of high intensity beam, in... -
Dan Abell (University of Maryland, College Park)21/05/2026, 16:00MC5.D07: High Intensity Circular Machines Space Charge, HalosPoster Presentation
The Ring Electron Cooler (REC) is designed to provide cooling to 275 GeV protons at Electron Ion Collider (EIC). The REC is a non-magnetized RF-based electron cooler employing a 150 MeV electron storage ring. Electron bunches of 21 nC are needed to achieve cooling rates required by EIC. The tune shift in the electron storage ring induced by e-bunch space charge (SC) is ≈0.14 in both planes....
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Rachel Margraf-O'Neal (Argonne National Laboratory)21/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
A chirper/de-chirper system based on transverse deflecting cavities has been studied for linear longitudinal phase space manipulation. Simulations have shown the efficacy of such a beamline, but scans of initial beam conditions reveal that strong second-order effects induce emittance growth. This computational study identifies the sources of these nonlinearities and assesses their impact on...
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Shaukat Khan (TU Dortmund University)21/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
High-gain harmonic generation (HGHG) is a seeding scheme for free-electron lasers (FELs), which improves the longitudinal coherence of the radiation output and reduces fluctuations of pulse energy, arrival time, and central wavelength compared to self-amplified spontaneous emission. In the HGHG scheme, laser-induced energy modulation is followed by a dispersive section, where part of the...
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Carlo Lazzarini (Extreme Light Infrastructure ERIC (Czech Republic))21/05/2026, 16:001MC3.T02: Advanced techniques/Novel sources: Electron SourcesPoster Presentation
Laser wakefield acceleration of electrons (LWFA) has emerged as one of the most transformative directions in compact accelerator research, offering ultrashort, high-brightness electron bunches and intrinsically synchronized broadband X-ray emission. At the Extreme Light Infrastructure ERIC (ELI ERIC), 4 dedicated LWFA electron beamlines have been already commissioned in the past 2 years. The...
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Salim Ogur (Thomas Jefferson National Accelerator Facility)21/05/2026, 16:00MC3.A12: Advanced techniques/Novel sources: Fixed Field Accelerators (FFAs)Poster Presentation
Jefferson Lab is exploring an upgrade to extend CEBAF’s energy to ~22 GeV within the existing tunnel by incorporating Fixed-Field Alternating-Gradient (FFA) arcs. In this scheme, the two lowest-energy electromagnetic arcs—one on each side of the racetrack— are removed, the remaining arcs are reassigned accordingly, and a new pair of high-energy FFA arcs enables six additional recirculations...
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Stefano Marangoni (National Center for Oncological Hadrontherapy)21/05/2026, 16:00MC4.T01: Hadron accelerators: Proton and Ion SourcesPoster Presentation
CNAO is one of the few centres all around the world able to treat patients affected from cancer by proton and carbon ions beams. The clinical beams are produced by a synchrotron equipped with two ECR (Electron Cyclotron Resonance) sources. A third source, based on the AISHa (Advanced Ion Source for Hadron therapy) source of the INFN-LNS laboratory, has been installed in order to pro-duce new...
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Ian Martin (Diamond Light Source)21/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
We report the status of the high-brightness, low-beta optics for the Diamond-II storage ring upgrade. Investigations into the dependence of lifetime and injection efficiency on betatron tunes will be presented. MOGA optimisation studies have been conducted to improve the nonlinear performance, including by increasing the number of sextupole families and varying the octupoles strengths. We...
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Markus Engart (Technical University of Darmstadt)21/05/2026, 16:00MC2.T02: Photon sources: Electron SourcesPoster Presentation
Photocathodes based on the III-V seminconductor GaAs are used as photo-electron sources to supply spin-polarized electron beams for accelerator applications. In order to achieve a sufficient electron yield, a thin surface layer of cesium combined with an oxidant is applied onto the cathode surface in a process called the cathode activation. It is typically done manually by an experienced...
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Sebastian Orth (GSI Helmholtz Centre for Heavy Ion Research)21/05/2026, 16:00MC4.T12: Hadron accelerators: Beam Injection/Extraction and TransportPoster Presentation
One of the planned slow extraction options for the SIS100 under construction at FAIR will be the excitation of a 3rd order resonance by means of the radio-frequency knock-out (RF KO) method. The system that is currently in its design phase will consist of two identical RF stations, each capable of providing a voltage amplitude of up to 5 kV between two electrodes (distance: 90 mm, length: 1.5...
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Samuel Kronenberg (University of Bonn)21/05/2026, 16:00MC2.T02: Photon sources: Electron SourcesPoster Presentation
A redesign of the injector beamline for the S-band linac at ELSA is underway, including the replacement of the existing electron gun by a hybrid gun that combines thermionic emission and thermally assisted photoemission in a single setup. The goal is to offer a new single-bunch injection mode alongside the long pulse mode already provided by the current gun. Measurements have been conducted to...
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Ali Dia (CEA Paris-Saclay)21/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
CEA is committed to delivering a LINAC in the frame of the ICONE project, in order to accelerate an 80-mA beam of protons up to 25 MeV, with a duty cycle of 6%. The LINAC project is divided into five workpackages: Source and LEBT, RFQ, MEBT, DTL and HEBT. The initial acceleration and bunching will be provided by a 4-vane RFQ cavity. For the DTL part, two solutions with copper cavities were...
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Manuel Heilmann (GSI Helmholtz Centre for Heavy Ion Research)21/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
The Alvarez-type drift-tube LINAC (DTL) at GSI presented here accelerates intense heavy-ion beams with A/q ≤ 8.5 from 1.4 to 11.4 MeV/u. It replaces a DTL being more than 45 years old, in order to satisfy the requirements of future FAIR operation. The 108.408 MHz Alvarez DTL design has been finalized since 2021, and all tank sections for the 55 m long post-stripper injector have been...
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Konstantinos Paraschou (European Organization for Nuclear Research)21/05/2026, 16:00MC2.A04: Photon sources: Circular AcceleratorsInvited poster
The PETRA IV project has finalised the engineering design for the construction of a new ultra-low emittance storage ring PETRA IV, based on hybrid 6-bend achromat lattice and the whole rebuild of the injector chain. We review here the latest development in the different technical subsystems, the status of the engineering integration and the plans for the implementation of the new ring in the...
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Yuejing Huang (National Synchrotron Radiation Laboratory, USTC)21/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
This paper presents a new method for nonlinear optics correction of storage ring lattices, which is based on locally generated orbit bumps and the corresponding response matrices. This method is conceptually similar to nonlinear optics from off-energy closed orbits (NOECO), but can be applied to the situation with harmonic sextupoles. Instead of off-energy closed orbits, it exploits the...
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Xiujie Deng (Tsinghua University)21/05/2026, 16:00MC5.D09: Emittance manipulation, Bunch Compression and CoolingPoster Presentation
Microbunching enables laser-like radiation generation from charged particle beam,
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and is one of the main driving forces advancing accelerator light sources in the past
decades. The most prominent example is free-electron laser. A natural approach of microbunching
creation is to imprint a coherent phase space correlation on the electron
beam using a conventional quantum laser, whose... -
Thomas Perron (European Synchrotron Radiation Facility)21/05/2026, 16:00MC2.T12: Photon sources: Beam Injection/Extraction and TransportPoster Presentation
Injection perturbation and beam losses on the ID low gaps are today's strongest limitation of the injection process in the ESRF-EBS storage ring, since it has started user operation in August 2020. While the use of non linear Kickers has been decided to achieve transparency, the development of a fast Strip-Line kicker has become increasingly interesting in several aspects, especially...
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David Sagan (Cornell University (CLASSE))21/05/2026, 16:00MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsPoster Presentation
Performance of Electron Ion Collider (EIC) will benefit from cooling of protons at the highest collision energy (γ=294). The required cooling can be provided by the Ring Electron Cooler (REC) – a non-magnetized RF-based electron cooler, employing an electron storage ring. The REC is a “racetrack” consisting of a 170 m long cooling section (CS), a wiggler section opposing the CS and containing...
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Björn Gålnander (GSI Helmholtz Centre for Heavy Ion Research)21/05/2026, 16:00MC4.T12: Hadron accelerators: Beam Injection/Extraction and TransportPoster Presentation
The synchrotron SIS100 at FAIR, under construction in Darmstadt, Germany, will deliver slow-extracted proton and ion beams up to 100 Tm using resonant extraction. The baseline method is transverse knock-out (KO) extraction, while the COSE (Constant Optics Slow Extraction) scheme has emerged as a promising alternative to quadrupole-driven extraction. This is particularly relevant for...
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Ingrid Mases (European Organization for Nuclear Research, Goethe University Frankfurt)21/05/2026, 16:00MC4.A17: Hadron accelerators: High Intensity AcceleratorsPoster Presentation
Transverse emittance growth was observed during the long injection plateau for high-intensity multi-bunch LHC-type beams in the CERN SPS, showing a clear dependence on the working point. Transverse tunes were increased to reduce emittance growth driven by integer resonances; however, a residual increase in emittance persists. To characterize this behavior and investigate its possible causes,...
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Areso Sherjan (GSI Helmholtz Centre for Heavy Ion Research)21/05/2026, 16:00MC4.A24: Hadron accelerators: Accelerators and Storage Rings, OtherPoster Presentation
The ESR (Experimental Storage Ring) at GSI is one of the very few facilities that can offer highly charged heavy ion beams for precise atomic physics experiments. With each experiment during the beam time the requirements on the storage ring are changing and so the machine needs to be prepared every time from the beam injection to the extraction accordingly. In order to find the optimal...
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Shamil Lachynov (Budker Institute of Nuclear Physics)21/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
Many applications of accelerator technology require electron bunches with length of up to 1 ps, the peak current exceeding 1 kA and the normalized emittance being less than 100 mm·mrad. To produce such bunches, special electron-optical systems ensuring beam bunching, known as magnetic bunchers, are widely used. Designing a 540° magnetic buncher has started several years ago at BINP [1]. Such a...
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Edgar Jair Villasenor Gonzalez (Universidad Autónoma de Sinaloa), Dr Elizabeth Castaneda (University of California San Diego)21/05/2026, 16:00MC5.D12: Electron Cloud and Trapped Ion EffectsPoster Presentation
The Electron Cloud (EC) effect is the main limiting factor in modern colliders and its study is widely conducted to reduce these effects. We present the studies of the EC effects on charged particle beams considering two cases on combined-function magnets (CFMs) for the FCC-ee collider. These studies are using PyECLOUD and Warp for performing the analysis in 2D and in 3D respectively. The aim...
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Yuejing Huang (National Synchrotron Radiation Laboratory, USTC)21/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
The reduction of beam emittance from third-generation to fourth-generation storage ring light sources is based on suppression of quantum excitation, while radiation damping becomes weaker. This leads to severe intra-beam scattering effect in fourth-generation light sources. To suppress this effect, this paper proposes a radiation damping enhanced lattice concept, which is numerically studied.
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YiQun Shi (Institute of High Energy Physics)21/05/2026, 16:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationPoster Presentation
Laser plasma accelerators (LPA) are expected to achieve acceleration gradients several orders of magnitude higher than conventional accelerators, thereby providing a promising route to the development of compact high-energy particle accelerators. However, the electron beams generated by current LPAs exhibit considerable energy spread and significant shot-to-shot energy jitter—issues that are...
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Hiromi Iinuma (Ibaraki University)21/05/2026, 16:00MC5.D03: Calculations of EM fields Theory and Code DevelopmentsPoster Presentation
To measure spin precession in ultra-precise magnetic fields, a method for injecting a beam with a three-dimensional spiral trajectory has been developed. For example, a muon beam with a momentum of 300 MeV/c must be confined within a controlled storage region (radius 33.3 ± 1.5 cm, height ± 5 cm) in a solenoid-type storage magnet (central magnetic flux density 3 T) based on medical MRI...
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Tianlong He (University of Science and Technology of China)21/05/2026, 16:00MC5.D05: Coherent and Incoherent Instabilities Theory, Simulations, Code DevelopmentPoster Presentation
Longitudinal higher-order modes (HOMs) trapped in vacuum components such as gate valves are a potential source of coupled-bunch instabilities in the HALF storage ring. Using macroparticle tracking simulations, we study these instabilities under bunch lengthening provided by a passive third-harmonic cavity. Two distinct instability types are identified: a centroid-oscillation mode and an...
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Zhiyuan Wang (Tsinghua University)21/05/2026, 16:00MC5.D09: Emittance manipulation, Bunch Compression and CoolingPoster Presentation
The generation of high-brightness electron beams with ultrashort duration and high temporal stability is essential for ultrafast electron diffraction (UED), which has become a powerful tool for ultrafast structural dynamics studies with high spatiotemporal resolution. However, simultaneously achieving sub-10 fs bunch duration and synchronization with pump laser remains challenging in practice....
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Stephane Pietri (GSI Helmholtz Centre for Heavy Ion Research), Dr Ahmed Ali (GSI Helmholtz Centre for Heavy Ion Research)21/05/2026, 16:00MC4.A21: Hadron accelerators: Secondary BeamsPoster Presentation
The Super-FRS project is a state-of-the-art spectrometer for nuclear physics studies, currently being built at the Facility for Antiproton and Ion Research (FAIR). The Super-FRS will serve as the workhorse of nuclear physics research, using intense primary beam from the synchrotrons of FAIR to produce, select, and identify rare isotopes. In addition to its technical capabilities for the...
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Karel Peetermans (Deutsches Elektronen-Synchrotron DESY)21/05/2026, 16:00MC2.A25: THz sourcesPoster Presentation
Accelerator-based THz sources offer high energy and repetition rates, making them attractive for pump-probe experiments at X-ray free-electron lasers. The superradiant terahertz radiation generation (STERN) experimental chamber was recently successfully integrated into the European XFEL electron beamline during its long installation and maintenance period. The setup incorporates Cherenkov...
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Arthur Delan (Helmholtz-Zentrum Dresden-Rossendorf, Johannes Gutenberg University Mainz)21/05/2026, 16:00MC2.A25: THz sourcesPoster Presentation
The Dresden Advanced Light Infrastructure (DALI), a 50 MeV superconducting linac currently under development at Helmholtz-Zentrum Dresden-Rossendorf, aims to deliver from one of its sources high-brightness, few cycle THz radiation through superradiant emission in a dedicated undulator. Efficient superradiant generation requires electron bunches with a form factor matched to the desired...
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Pardis Niknejadi (Deutsches Elektronen-Synchrotron DESY)21/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
Scientific data is commonly stored in formats such as CSV for small to medium datasets, HDF5 for complex hierarchical structures, and NetCDF for gridded and temporal variables. These formats provide robust mechanisms for structured storage, preparing hierarchical or multidimensional data for machine learning (ML) models and GPU-accelerated computation. However, often they incur substantial...
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Thomas Schietinger (Paul Scherrer Institute)21/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
SwissFEL, the free-electron laser facility at the Paul Scherrer Institute (PSI) in Switzerland, is about to complete its first decade of user operation. The knowledge gained during this period, together with important developments at FEL facilities worldwide, suggests a number of key upgrades to the accelerator and undulator complex that would substantially enhance the scientific capabilities...
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Fancong Zeng (Institute of High Energy Physics, Chinese Academy of Sciences, University of Chinese Academy of Sciences)21/05/2026, 16:001MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsPoster Presentation
Symplectic integration is essential for simulating the long-term stability of systems such as storage rings. In contrast, it has traditionally been considered unnecessary for single-pass free-electron laser (FEL) simulations. Consequently, standard FEL simulation codes, like Genesis, have not fully incorporated symplectic methods in their treatment of the beam dynamics. However, with the...
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Gabriel Ascenção (Brazilian Synchrotron Light Laboratory, Universidade Estadual de Campinas (UNICAMP))21/05/2026, 16:00MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsPoster Presentation
This paper presents the development of a symplectic integrator for particle tracking in insertion devices at SIRIUS. The method relies on analytical field representations specifically tailored to model the magnetic structure of the device accurately. Tracking results obtained with the new integrator are compared with those from traditional kickmaps, and the differences observed in dynamical...
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Dan Abell (University of Maryland, College Park)21/05/2026, 16:00MC5.D10: Beam-Beam Effects Theory, Simulations, Measurements, Code DevelopmentsPoster Presentation
Many accelerator tracking codes include interactions, models, and coordinate transformations that make it difficult to evaluate symplecticity analytically. The stability of long term tracking depends on preservation of Hamiltonian structure, making numerical verification of symplecticity important. We present a symplectic verification method based on truncated power series (TPS) propagation...
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Dr John Lewellen (Los Alamos National Laboratory)21/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
The LANSCE accelerator is extraordinarily flexible in its ability to simultaneously accelerate both H+ and H- beams, and provide concurrent beam delivery to five independent user stations. LANSCE has been in operation for more than 50 years, and many of the accelerator structures, such as the Cockcroft-Walton injectors and drift-tube linac tanks, are original. To address end-of-life concerns...
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Dmitrii Rabusov (Diamond Light Source)21/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
Diamond-II will use fast stripline kickers for transparent single bunch injection during top-up operations. A prototype stripline and pulser have been developed,and have undergone evaluation in the existing Diamond accelerator. Two types of feedthrough connector have been tested, and suitable cables and attenuators have been identified. We present results from an array of checks for the...
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Dr Iker Rodriguez (STFC Rutherford Appleton Laboratory), Jonathan Cawley (STFC Rutherford Appleton Laboratory)21/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
The quarter wave resonator (QWR, a.k.a. λ/4 resonator) for the new ISIS MEBT is a bunching cavity that longitudinally compresses the H- beam into smaller bunches. It has two gaps with a distance of βλ/2 between mid-gaps, and works in π mode at the resonant frequency of 202.5 MHz, with a phase angle of -90 degrees, and a maximum voltage per gap (E0L) of 55 kV. The detailed RF and thermal design...
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Gianluca Geloni (European X-Ray Free-Electron Laser)21/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
In this contribution we will discuss the “Attosecond Technology” program at the European XFEL. This strategic program is being launched to cross a new frontier in ultrafast science, enabling experiments that probe and control electron dynamics on their natural timescales. The program is structured into tightly coordinated projects that address the full chain of challenges required for reliable...
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Jens Voelker (Helmholtz-Zentrum Berlin für Materialien und Energie)21/05/2026, 16:00MC2.T12: Photon sources: Beam Injection/Extraction and TransportPoster Presentation
The HZB is currently in the CDR phase for a successor of its storage ring BESSY II, running since 1998 in Berlin Adlershof. BESSY III is planned to operate a high current beam of 300 mA at 2.5 GeV electron energy. The lattice will be based on a multi bend achromat, enabling a natural emittance of about 100 pm rad. However, due to the strong multipole magnets needed the dynamic aperture is much...
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Ms Lisa Beate Dingeldein (Technical University of Darmstadt)21/05/2026, 16:00MC2.A26: Photon sources: Compton sourcesPoster Presentation
The COBRA source (Compton Backscattering at a Recirculating Accelerator) utilizes a 100 W Yb:YAG laser that is synchronized with the electron beam of the superconducting Darmstadt linear accelerator S-DALINAC * for head-on collisions. The backscattered photons in the X-ray energy range can be collimated into a quasi-monochromatic beam for electron beam diagnostics and as a technology...
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Jean-Luc Revol (European Synchrotron Radiation Facility)21/05/2026, 16:00MC2.A24: Photon sources: Accelerators and Storage Rings, OtherPoster Presentation
The ESRF long term strategy for the injectors upgrade includes the possibility of a full energy 6GeV linac. This linac is supposed to fit on the ESRF site leading to a maximum footprint of ~130m. High gradient accelerating structure technology from SLAC* was selected as the enabling technology to realize such a compact injector linac. The use of a phogun and pulse compression would imply...
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1211. The first APPLE X knot undulators: magnetic characterization and initial performance (THP2158)Sebastian C. Richter (Paul Scherrer Institute)21/05/2026, 16:00MC2.T15: Photon sources: Undulators and WigglersPoster Presentation
Concepts for reducing on-axis heat load become essential as photon flux increases in next-generation synchrotrons, especially in the soft X-ray regime. Therefore, APPLE “knot” undulators are promising insertion devices, as they divert most of the energy off-axis without compromising polarization purity. The first two APPLE X knot undulators, 2 m long and with a period of 36 mm, were designed...
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Matthew Fraser (European Organization for Nuclear Research)21/05/2026, 16:00MC4.A17: Hadron accelerators: High Intensity AcceleratorsPoster Presentation
The Search for Hidden Particles (SHiP) fixed-target experiment has been approved to lead the search for dark matter at CERN, which has so far evaded discovery at the Large Hadron Collider. To meet SHiP’s demanding beam and infrastructure requirements, the High-Intensity ECN3 (HI-ECN3) project has been mandated with upgrading CERN’s North Area and equipping its only underground experimental...
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1709. The impact of transverse-longitudinal coupling on longitudinal microwave instability (THP5653)Jihong Bian (Tsinghua University)21/05/2026, 16:00MC5.D05: Coherent and Incoherent Instabilities Theory, Simulations, Code DevelopmentPoster Presentation
In a storage ring with an extremely small global phase slippage, the bunch length can vary significantly within one turn due to the partial phase slippage and transverse-longitudinal coupling, which means the adiabatic approximation usually adopted for longitudinal dynamics breaks down. The impact of such a bunch length variation and exchange of the head and tail part of the beam arising from...
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Lennert De Keukeleere (Belgian Nuclear Research Centre)21/05/2026, 16:00MC4.A17: Hadron accelerators: High Intensity AcceleratorsPoster Presentation
At the Nuclear Research Center SCK CEN in Belgium, the first phase of the MYRRHA project (an accelerator driven system) is under construction. Included in MYRRHA Phase 1 are a normal conducting injector linac (RFQ + CH cavities) and a super conducting linac (60 single spoke cavities), providing a CW proton beam of 4 mA and 100 MeV.
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In this contribution we present simulations of the Low Energy... -
Marie-Emmanuelle Couprie (Synchrotron soleil)21/05/2026, 16:00MC2.T15: Photon sources: Undulators and WigglersPoster Presentation
The SOLEIL II insertion devices will be presented. They range from long period Adjustable Phase Undulator of long period, APPLE X, Dual undulators for the intermediate energy spectral range, and in vacuum undulators, cryogenic permanent magnet undulators and wigglers for hard X-rays.
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Youngmin Park (Pohang University of Science and Technology)21/05/2026, 16:00MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsPoster Presentation
This study presents a theoretical investigation of steady-state microbunching (SSMB) within the design framework of the PAL-EUV ring. An analytic longitudinal dynamics model that includes laser-induced energy modulation, radiation damping and quantum excitation, and nonlinear momentum compaction is formulated to examine whether the baseline ring parameters can support sustained microbunch...
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Dmitry Bazyl (Deutsches Elektronen-Synchrotron DESY)21/05/2026, 16:00MC2.T02: Photon sources: Electron SourcesPoster Presentation
We assess the thermal behavior of a cryogenically cooled copper photocathode integrated into a continuous-wave superconducting radio-frequency injector cavity through direct thermal contact. A coupled three-dimensional thermal-electromagnetic model incorporating both the bulk photocathode and the injector cavity is presented. For the current injector design, the laser heat load is predicted to...
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Danyal Winters (GSI Helmholtz Centre for Heavy Ion Research)21/05/2026, 16:00MC4.A11: Hadron accelerators: Beam CoolingPoster Presentation
How to "cool" intense beams of relativistic heavy ions? This is a very challenging task, especially when established ion beam cooling techniques have profound difficulties under such conditions. At the heavy-ion synchrotron SIS100 of the Facility for Antiproton and Ion Research (FAIR) in Darmstadt, Germany, we will apply "bunched beam laser cooling" with a novel 3-beam concept, where laser...
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Baiting Song (Tsinghua University)21/05/2026, 16:00MC5.D09: Emittance manipulation, Bunch Compression and CoolingPoster Presentation
We propose a novel MeV UED beamline design based on a normal-conducting very-high-frequency (VHF) electron gun that generates a high-quality electron beam at a megahertz (MHz) repetition rate. Beam compression and time-of-flight (TOF) control are achieved using an alpha-magnet. Simulations show compression of the 4.1 fC electron beam to a duration of 4.7 fs RMS, with a TOF jitter of 1.9 fs...
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Julian Rausch (Goethe University Frankfurt)21/05/2026, 16:00MC4.A24: Hadron accelerators: Accelerators and Storage Rings, OtherPoster Presentation
For the analysis of longitudinal dynamics in synchrotrons and storage rings, the reconstruction of the beam distribution in longitudinal phase space is of high interest. This study applies a tomographic method to longitudinal beam profiles measured in the ESR to reconstruct longitudinal phase space. We show the limitations of these methods for the nonlinear beam dynamics in an RF bucket.
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Adriana Wawrzyniak (SOLARIS National Synchrotron Radiation Centre)21/05/2026, 16:00MC2.T12: Photon sources: Beam Injection/Extraction and TransportPoster Presentation
The development of top-up operation in the SOLARIS storage ring is essential for achieving high beam stability and meeting the demands of beamlines’ users. As part of this effort, we investigate solutions inspired by the successful implementation of the Multipole Injection Kicker (MIK) at MAX IV, where the nonlinear-field device enabled nearly transparent injection and significantly reduced...
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Andrew Potter (Diamond Light Source)21/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
Top-up operation at the Diamond-II storage ring will involve injecting bunches of electrons into the ring whilst the photon beamlines are in use. It is important, for the safety of the users, that electrons from the newly injected bunches cannot travel down the photon beampipe to the front end. For each beamline, all possible trajectories through the ID straight were identified and tracked...
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Dr Nuan-Ya Huang (National Synchrotron Radiation Research Center)21/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
The Taiwan Photon Source upgrade (TPS-II) study aims to realize an ultralow emittance lattice compatible with the existing TPS tunnel. This work presents an updated 6BA lattice design with a natural emittance of 67 pm-rad at 3 GeV, followed by an preliminary evaluation of its robustness study under machine errors. A key innovation in this design is the strategic integration of sextupole...
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Helene Guerin (European Organization for Nuclear Research)21/05/2026, 16:00MC4.T20: Hadron accelerators: Targetry and DumpsPoster Presentation
In the Large Hadron Collider (LHC), two beam dumps (TDEs) ensure the safe and reliable disposal of the extracted beams. During Run 4, the stored beam energy will increase from 490 MJ achieved so far during Run 3 to a maximum of 710 MJ. A new design, capable of withstanding the increase in dump energy, is therefore presented for the High Luminosity LHC (HL-LHC) TDEs. This contribution includes...
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Dr Adrien Plaçais (Laboratoire de Physique Subatomique et de Cosmologie)21/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
SPIRAL2 is a superconducting linac located in Caen, France. It is designed to accelerate intense ion beams with A/Q ratios ranging from 1 to 7, which can be used in various experimental facilities for nuclear physics and applied research. In this machine, RF systems have been identified as a major source of beam interruptions*, limiting the overall availability of SPIRAL2.
Cavity failure...
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Vladimir Litvinenko (Stony Brook University)21/05/2026, 16:00MC3.T02: Advanced techniques/Novel sources: Electron SourcesPoster Presentation
Polarized electron beams play critical role in fundamental physics research by providing additional observables and opening new channels of discoveries. T GaAs crystals illuminated by circular polarized IR lasers remain the best choice for generating polarized electrons. All current polarized sources are an electrostatic electron guns providing necessary extreme (XUV) vacuum conditions for...
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Laurent Nadolski (Synchrotron soleil)21/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
The SOLEIL II sextupoles are equipped with additional windings to provide normal and skew dipole corrections. Accurate modeling of these combined-function sextupole magnets are particularly challenging due to magnetic saturation, hysteresis, and internal cross-talk between channels. Based on 3D magnetic simulations, polynomial, interpolation-based, and neural-network models were developed to...
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Thomas Banks (European Organization for Nuclear Research)21/05/2026, 16:00MC4.T20: Hadron accelerators: Targetry and DumpsPoster Presentation
The High Luminosity (HL) upgrade of the Large Hadron Collider (LHC) requires the installation of two new beam dumps capable of safely absorbing energies of up to 710 MJ per beam. The beam dump consists of an 8.4 m long, 700 mm diameter, thin-walled cylinder containing a shrink-fitted internal core made of carbon-based materials. This contribution reports on the critical R&D activities...
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Christian Baumgarten (Paul Scherrer Institute)21/05/2026, 16:00MC4.A13: Hadron accelerators: CyclotronsPoster Presentation
Injector II is part of PSI's high intensity proton accelerator (HIPA)
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facility. It is to date the only cyclotron worldwide that makes use
of the a space-charge driven effect ("Vortex Effect") which causes
bunches not to expand but to "roll up" in the horizontal plane.
The effect prevents the cyclotron bunches from expanding
longitudinally so that the phase width stays unusually small... -
Jack Phillips (Particle Beam Physics Lab (PBPL)), Yunbo Kang (Particle Beam Physics Lab (PBPL))21/05/2026, 16:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationPoster Presentation
Plasma wakefield accelerators (PWFAs) driven by flat (transversely asymmetric) beams naturally excite non-axisymmetric blowout cavities. The resulting wakefields exhibit transversely non-uniform accelerating fields and transverse focusing forces with a nontrivial dependence on the co-moving longitudinal coordinate, i.e., a transverse–longitudinal wakefield coupling. Building on a recently...
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David Dunning (STFC Daresbury Laboratory, Cockcroft Institute)21/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Invited poster
UK scientists are amongst the leading users of pioneering X-ray free-electron laser (XFEL) facilities, which enable revolutionary atomic-level imaging and ultrafast time resolution far beyond other methods. Looking to the future for the UK community, the UK XFEL project has developed a science and technology case and a conceptual design for a next-generation XFEL that can utilise maturing...
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Shaukat Khan (TU Dortmund University)21/05/2026, 16:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
A low-intensity double-slit experiment in the time domain has been undertaken by measuring the spectral distribution of synchrotron light from a single relativistic electron in a storage ring. In two consecutive undulators with a dispersive section between them (known as optical klystron), an electron beam emits two temporally separated light pulses leading to a spectrum with interference...
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Dr Todd Satogata (Thomas Jefferson National Accelerator Facility)21/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
A new electron injector complex has been proposed within the Low Energy Recirculating Facility (LERF) vault, which would serve both the 22 GeV CEBAF and the positron programs, while being compatible with the electron source required to produce positrons for Ce+BAF. The baseline design of a 3-pass recirculator features a main linac configured with three C-75 cryo-modules, four isochronous arcs...
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Hitoshi Tanaka (RIKEN SPring-8 Center)21/05/2026, 16:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportInvited poster
We present a novel unified approach to the expression and correction of electron beam chromatic aberrations, which comprehensively covers optical systems of both a single-pass beam transport line and a circular accelerator satisfying periodic boundary conditions. In an electron circular accelerator, linear chromaticity has been utilized to express the first-order difference in beam focusing...
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Michael Holz (MAX IV Laboratory)21/05/2026, 16:00MC2.T15: Photon sources: Undulators and WigglersPoster Presentation
Currently, there are 17 Insertion Devices (ID) in operation at the MAX IV facility. The soft X-ray undulators are based on the 3 APPLE II undulator at the 3 GeV ring, 4 APPLE II and 1 planar undulators at the 1.5 GeV ring, and the hard X-ray IDs are based on room-temperature in-vacuum technology at the 3 GeV ring and the Short Pulse Facility.
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A recently funded Tomography beamline for... -
612. Update of the beam lines conception of the SPIRAL2-DESIR Project at GANIL Caen France (THP4063)Dr Luc Perrot (Université Paris-Saclay, CNRS/IN2P3, IJCLab, Laboratoire de Physique des 2 Infinis Irène Joliot-Curie)21/05/2026, 16:00MC4.A20: Hadron accelerators: Radioactive IonsPoster Presentation
The SPIRAL2 facility at GANIL (Caen, France) has been operational since 2019. In 2027, the DESIR facility will begin receiving beams from the SPIRAL1 facility. At a later stage, DESIR will also receive radioactive ion beams from the S3-LEB facility, connected to the S3 separator of SPIRAL2. Construction of the DESIR building was completed in 2025. Many components of the beamline systems have...
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Daniele Sertore (Istituto Nazionale di Fisica Nucleare, Laboratori Acceleratori e Superconduttività Applicata)21/05/2026, 16:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
INFN LASA is involved in delivery four MBcavities to ESS Eric as part of the Italian In-Kind Contribution to the “operation Phase”.
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The cavities have been fabricated and tested naked before the integration into the He-tank. After successful performance verification, the cavities have been integrated and finally validated at DESY AMTF before their delivery to CEA for installation into the... -
Katrin Holzfeind (TU Wien)21/05/2026, 16:00MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsPoster Presentation
This contribution summarizes recent developments in slow extraction studies at the MedAustron center for ion beam therapy and research. In particular studies concerning radio frequency knock-out (RFKO) and phase displacement extraction (PDE) are presented. The experimental RFKO studies employ a new signal generator system based on a micro-telecommunication architecture.
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Katja Honkavaara (Deutsches Elektronen-Synchrotron DESY)21/05/2026, 16:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
The Free-Electron Laser FLASH at DESY has provided more than 20 years XUV and soft x-ray SASE radiation for user experiments. In order to keep FLASH as a state-of-the-art FEL, the refurbishment and upgrade project FLASH2020+ was launched. The latest upgrade has been a complete replacement of the FLASH1 beamline in a 14 months shutdown in 2024/25. The new external seeded FLASH1 will provide...
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Michael Balcewicz (Fermi National Accelerator Laboratory)21/05/2026, 16:00MC5.D06: Coherent and Incoherent Instabilities Measurements and CountermeasuresPoster Presentation
For many synchrotrons which cross $\gamma_t$ transition, a high intensity threshold has been identified beyond which significant beam losses are observed. These losses are due to a a high intensity mode coupling instability, which can be suppressed by adjusting the chromaticity curve to cross zero slightly after $\gamma_t$ transition. This has been shown to be effective at several...
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Ihar Lobach (Brookhaven National Laboratory)21/05/2026, 16:00MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsInvited poster
We present a novel method to generate a symplectic transfer map for any beamline element defined by its magnetic vector potential, even when it is known only on a 3D grid. The method uses a neural network (NN) as an ansatz to solve the Hamilton-Jacobi (HJ) equation for the unknown generating function of the second kind. This generating function is chosen to connect the solution of a simpler...
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Suzanna Percival (ASTeC, STFC Daresbury Laboratory, Cockcroft Institute)21/05/2026, 16:00MC2.A29: Ultrafast electron diffraction and ultrafast electron microscopyPoster Presentation
The RUEDI (Relativistic Ultrafast Electron Diffraction & Imaging) ultrafast electron diffraction (UED) beamline aims to deliver MeV electron bunches for sub-10 fs timescale diffraction experiments. The achievable resolution of the diffraction pattern at the detector is determined by the quality and focusing of the beam at the sample, and the transport of the scattered beam to the detector. A...
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Michael Böge (Paul Scherrer Institute)21/05/2026, 16:00MC2.A04: Photon sources: Circular AcceleratorsPoster Presentation
The alignment of girders and individual magnetic elements according to the tight design specifications is of paramount importance for achieving the ultimate performance of the SLS 2.0 storage ring (SR) which is consisting of a large number of SR optics defining permanent magnets. As a result, alignment errors can easily overstrain the very limited capabilities of the electromagnetic dipole...
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Paul Volz (Helmholtz-Zentrum Berlin für Materialien und Energie)21/05/2026, 16:00MC2.T15: Photon sources: Undulators and WigglersPoster Presentation
The Helmhotz-Zentrum Berlin (HZB) is developing an elliptical in-vacuum undulator, IVUE32, following the APPLE-II design with a magnetic force compensation concept. The undulator will be installed in the BESSY II storage ring. It will feature a 7 mm minimum gap and four magnet rows that can be moved to adjust the polarization of the synchrotron radiation. This shift movement requires a complex...
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