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17/05/2026, 09:30
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Chuhao Li (Tsinghua University)17/05/2026, 14:001MC4.A04: Hadron accelerators: Circular AcceleratorsStudent Poster 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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Siyuan Feng (University of Chinese Academy of Sciences)17/05/2026, 14:001MC1.A04: Colliders: Circular Accelerators and Storage RingsStudent Poster 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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XinYa Sun (Shanghai Advanced Research Institute, Chinese Academy of Sciences)17/05/2026, 14:00
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 from linear accelerators to irradiate Ra-226 targets offers a viable approach to significantly enhance Ac-225 production. However, excessive proton energies, while increasing yield, promote the generation of impurity isotopes...
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Alice Renaux (Laboratoire de Physique des 2 Infinis Irène Joliot-Curie)17/05/2026, 14:00MC6.T24: Instrumentation: Timing and SynchronizationStudent Poster Presentation
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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LINGLONG MAO (Shanghai Institute of Applied Physics, Chinese Academy of Sciences), Shunqiang Tian (Shanghai Advanced Research Institute, Chinese Academy of Sciences), Xinzhong Liu (Shanghai Advanced Research Institute), Liyuan Tan (Shanghai Advanced Research Institute, Chinese Academy of Sciences), Yihao Gong (Shanghai Synchrotron Radiation Facility)17/05/2026, 14:00
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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2737. A novel approach for transverse instability detection in the CERN Proton Synchrotron (SUP6018)Amaury Beeckman (European Organization for Nuclear Research)17/05/2026, 14:00
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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Jin Lin (Tsinghua University)17/05/2026, 14:00
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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junjie ren (Institute of High Energy Physics)17/05/2026, 14:00
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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Maria Paula Rey Barrera (Paul Scherrer Institute)17/05/2026, 14:00
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. 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...
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Oleh Svystunov (National Science Center Kharkiv Institute of Physics and Technology)17/05/2026, 14:00MC3.A15: Advanced techniques/Novel sources: New Acceleration Concepts and TechniquesStudent Poster 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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Ryan Yeung (Michigan State University)17/05/2026, 14:00MC6.D13: Instrumentation: Artificial IntelligenceStudent Poster 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 (University of Petroleum and Energy Studies)17/05/2026, 14:00
Particle accelerators and synchrotron radiation facilities are pivotal tools in advancing nuclear materials research. In this study, we harnessed accelerator-driven ion beams and synchrotron-based spectroscopies to investigate the radiation tolerance of ceramic composites as candidates for Inert Matrix Fuel (IMF). Yttria-stabilized zirconia (YSZ) stands out as a potential material for IMF due...
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Yinan Wang (Rensselaer Polytechnic Institute), Mr Yue Zhao (Rensselaer Polytechnic Institute)17/05/2026, 14:001MC6.D13: Instrumentation: Artificial IntelligenceStudent Poster 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. To preserve both intensity and emittance during these gymnastics, the voltages and phases of RF cavities at several harmonic numbers must be carefully coordinated, which is labor-intensive and fragile. Recent work using a...
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Xiaopeng Xu (University of Science and Technology of China)17/05/2026, 14:00
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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Ysabella Kassandra Ong (Istituto Nazionale di Fisica Nucleare)17/05/2026, 14:00MC6.D13: Instrumentation: Artificial IntelligenceStudent Poster Presentation
The application of Artificial Intelligence (AI) and Machine Learning (ML) to particle accelerator systems has emerged as an effective strategy for managing complex operations and enhancing performance. At INFN-Legnaro National Laboratories (INFN-LNL), both offline and online AI/ML-driven approaches have been developed to improve beam dynamics, reduce setup times, and increase overall...
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Charly Lassalle (Grand Accélérateur National d'Ions Lourds, Université de Caen Normandie)17/05/2026, 14:00
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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qiuyu zhang (University of Science and Technology of China)17/05/2026, 14:00
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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Juan Carlos Fernández Ortega (Instituto de Física Corpuscular)17/05/2026, 14:00
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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Yan Wang (Huazhong University of Science and Technology)17/05/2026, 14:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportStudent Poster 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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Youngmin Park (Pohang University of Science and Technology)17/05/2026, 14:001MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsStudent Poster 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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Yuxin Han (Shanghai Institute of Applied Physics)17/05/2026, 14:00
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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Matheus Velloso (Brazilian Synchrotron Light Laboratory)17/05/2026, 14:001MC5.D01: Beam Optics Lattices, Correction Schemes, TransportStudent Poster 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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Jaroslaw Szumega (European Organization for Nuclear Research)17/05/2026, 14:00MC6.D13: Instrumentation: Artificial IntelligenceStudent Poster 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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Omar Hassan (TRIUMF, University of Victoria)17/05/2026, 14:00
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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Joshua Gregory (Lancaster University)17/05/2026, 14:00MC6.T24: Instrumentation: Timing and SynchronizationStudent Poster 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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Johan Lundquist (Lund University)17/05/2026, 14:00MC6.D13: Instrumentation: Artificial IntelligenceStudent Poster 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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Divya Divya (TU Wien)17/05/2026, 14:00
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 their operation. However, the very high instantaneous flux of electrons is a major challenge for any radiation diagnostics system. In this work, the characterisation of the...
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Andrea Aguirre Polo (Deutsches Elektronen-Synchrotron DESY)17/05/2026, 14:00
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... -
Thomas Fogg (Particle Therapy Research Center)17/05/2026, 14:00
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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Keyvan Tabaei (University of Isfahan)17/05/2026, 14:00MC5.D04: Beam Coupling Impedance Theory, Simulations, Measurements, Code DevelopmentStudent Poster 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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Daniel Dewitt (Technical University of Darmstadt)17/05/2026, 14:00MC3.A15: Advanced techniques/Novel sources: New Acceleration Concepts and TechniquesStudent Poster 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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Jesus Avila Pulido (Paul Scherrer Institute)17/05/2026, 14:001MC5.D01: Beam Optics Lattices, Correction Schemes, TransportStudent Poster 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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Yitong Duan (Tsinghua University)17/05/2026, 14:00MC3.T02: Advanced techniques/Novel sources: Electron SourcesStudent Poster 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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Mr Jordan Byrne (University of Manchester, Cockcroft Institute)17/05/2026, 14:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationStudent Poster 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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Wiktoria Wiatrowska (SOLARIS National Synchrotron Radiation Centre)17/05/2026, 14:001MC2.A24: Photon sources: Accelerators and Storage Rings, OtherStudent Poster 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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3119. Characterization of a Radially Polarized Terahertz Pulse for Dielectric Acceleration (SUP3025)17/05/2026, 14:00MC3.A15: Advanced techniques/Novel sources: New Acceleration Concepts and TechniquesStudent Poster 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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Roberta Provvedi (Paul Scherrer Institute)17/05/2026, 14:00MC5.D06: Coherent and Incoherent Instabilities Measurements and CountermeasuresStudent Poster 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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Jan Mezger (Max Planck Institute for Physics), Jan Mezger (Max Planck Institute for Physics)17/05/2026, 14:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationStudent Poster 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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Leonie Bauer (Goethe University Frankfurt)17/05/2026, 14:00
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... -
Joel Valerian (The University of Melbourne)17/05/2026, 14:00
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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Fatima Jafari (Goethe University Frankfurt)17/05/2026, 14:00
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... -
Ruben Heine (Technische Universität Berlin)17/05/2026, 14:00MC5.D05: Coherent and Incoherent Instabilities Theory, Simulations, Code DevelopmentStudent Poster 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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Andrea Vella (University of Malta)17/05/2026, 14:00
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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Pierluigi Fedeli (University of Ferrara)17/05/2026, 14:00MC2.A24: Photon sources: Accelerators and Storage Rings, OtherStudent Poster 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)17/05/2026, 14:00MC3.A21: Advanced techniques/Novel sources: Secondary BeamsStudent Poster Presentation
Shanghai High-repetition-rate XFEL and Extreme Light (SHINE) Facility provides an 8 GeV, 1 MHz, 100 pC electron beam, offering a unique high-duty-cycle driver for generating muons—ideal for certain types of muon experiments, such as muon spin rotation techniques and muon lifetime measurements. We proposed an alternative approach to muon production using high-repetition-rate (kHz-MHz) electron...
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Sophia Morton (SLAC National Accelerator Laboratory)17/05/2026, 14:00
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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Disha Yadav (University of Petroleum and Energy Studies)17/05/2026, 14:00
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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Wenxiang Hu (Paul Scherrer Institute, ETH Zurich)17/05/2026, 14:00
X-ray free-electron lasers (FELs) are powerful photon sources offering a wide wavelength range, subfemtosecond pulse duration, and high brightness. Most X-ray FELs are based on self-amplified spontaneous emission (SASE). SASE-FEL radiation has excellent transverse but only limited longitudinal or temporal coherence, with power and spectral profiles consisting of multiple randomly distributed...
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Zichen Zhong (University of Science and Technology of China)17/05/2026, 14:00MC7.T16: Pulsed Technology (magnet and power supplies)Student 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... -
Jincheng Xiao (University of Science and Technology of China)17/05/2026, 14:00MC5.D11: Code Developments and Simulation TechniquesStudent Poster 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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Zhicheng Huang (University of Science and Technology of China)17/05/2026, 14:00
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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Demetrio Hermenegildo Saucedo Cuberes (Universidad de Sevilla)17/05/2026, 14:00
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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Prateek Rao (University of Wisconsin–Madison)17/05/2026, 14:00MC1.A09: Muon Accelerators, Neutrino Factories, Muon CollidersStudent Poster 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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Peizhi Fang (Tsinghua University)17/05/2026, 14:00
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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Dinghui Su (Shanghai Institute of Applied Physics)17/05/2026, 14:00
Ultra-low emittance is one of the primary directions for the development of synchrotron radiation facilities. To manage coupled-bunch instabilities and achieve beam lifetime expectations, higher-harmonic cavities have become a common requirement for diffraction-limited storage rings. bimodal cavities are considered a multifunctional and compact accelerating structure capable of integrating the...
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JunHao Liu (Shanghai Advanced Research Institute)17/05/2026, 14:00
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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Lianmin Zheng (Tsinghua University), Yingchao Du (Tsinghua University), Zhengkai Wang (Tsinghua University)17/05/2026, 14:00MC2.T12: Photon sources: Beam Injection/Extraction and TransportStudent Poster 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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Salih Colmekci (Northern Illinois University)17/05/2026, 14:00MC3.A15: Advanced techniques/Novel sources: New Acceleration Concepts and TechniquesStudent Poster Presentation
Using short radiofrequency (RF) pulses is a promising
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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... -
Baiting Song (Tsinghua University)17/05/2026, 14:00MC5.D09: Emittance manipulation, Bunch Compression and CoolingStudent Poster 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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Yelong Wei (University of Science and Technology of China)17/05/2026, 14:00
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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Chengzhe Wang (University of Science and Technology of China)17/05/2026, 14:00
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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Simon Barg (The University of Melbourne)17/05/2026, 14:00MC3.A12: Advanced techniques/Novel sources: Fixed Field Accelerators (FFAs)Student 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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Matilda Mwaniki (Illinois Institute of Technology)17/05/2026, 14:00
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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Victoria Isensee (Technical University of Darmstadt)17/05/2026, 14:00MC5.D11: Code Developments and Simulation TechniquesStudent Poster 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)... -
Je Hwan Han (Institute for Rare Isotope Science)17/05/2026, 14:00MC3.T01: Advanced techniques/Novel sources: Proton and Ion SourcesStudent Poster 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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Riku Nomaru (The University of Tokyo)17/05/2026, 14:00
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)17/05/2026, 14:00
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)17/05/2026, 14:00
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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Shotaro Matsui (The University of Osaka)17/05/2026, 14:00MC4.T01: Hadron accelerators: Proton and Ion SourcesStudent Poster 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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Rémi Martinie (Paul Scherrer Institute)17/05/2026, 14:00
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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Mayu Wada (The University of Tokyo)17/05/2026, 14:00
The E34 experiment at J-PARC MLF aims to precisely measure the positive muon's anomalous magnetic moment and electric dipole moment.
Two technical challenges are critical. First, the ultraslow muon source (from muon cooling) must achieve its target intensity ($10^6 \mu^+/\text{sec}$) and low-emittance ($\epsilon_{x, \text{rms,normalized}}: \sim 0.3 \pi [\text{mm}\cdot\text{mrad}],...
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ShaoHang Ma (University of Science and Technology of China)17/05/2026, 14:00
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...
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Anna Piccoli (University of Ferrara, Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara)17/05/2026, 14:00MC4.A24: Hadron accelerators: Accelerators and Storage Rings, OtherStudent Poster 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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Axel Perez Ruiz (Accelerators & Cryogenic Systems, Université Paris-Saclay, CNRS/IN2P3, IJCLab)17/05/2026, 14:00
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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Evan Navar Root (Cornell University (CLASSE))17/05/2026, 14:00MC5.D10: Beam-Beam Effects Theory, Simulations, Measurements, Code DevelopmentsStudent Poster Presentation
A model of the beam-beam force for strong-weak simulations has been implemented in the SciBmad library, including variations of the beam size and beam centroid across the interaction region. Similar to models in the Bmad ecosystem, the SciBmad implementation simulates the weak-strong interaction of 6D beam distributions, where only the weak beam becomes non-Gaussian due to single-particle...
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Delphine Domange (European Organization for Nuclear Research)17/05/2026, 14:00Student Poster Presentation
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... -
Inci Karaaslan (University of Chicago)17/05/2026, 14:00MC1.A09: Muon Accelerators, Neutrino Factories, Muon CollidersStudent Poster 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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2909. Effect of the Laser Polarization on Electron Acceleration in Carbon Nanotube Targets (SUP3303)Bruno Silveira Nunes (Instituto de Pesquisas Energéticas e Nucleares)17/05/2026, 14:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationStudent Poster 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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Weibo Hu (University of Science and Technology of China)17/05/2026, 14:00MC7.T16: Pulsed Technology (magnet and power supplies)Student Poster Presentation
The beam injection system of the Hefei Advanced Light Source (HALF) utilizes a nonlinear kicker (NLK) based on an 8-conductor geometry. Due to the presence of the internal vacuum chamber and the high sensitivity of the magnetic field distribution to the conductor positions, the design of an 8-conductor NLK demands extreme precision and poses significant technical challenges. To address these...
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ShengBin Ye (ShanghaiTech University)17/05/2026, 14:00
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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Serhii Kovalov (National Science Center Kharkiv Institute of Physics and Technology)17/05/2026, 14:00MC2.T12: Photon sources: Beam Injection/Extraction and TransportStudent Poster 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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Mr Guojiang Zhang (Tsinghua University)17/05/2026, 14:00
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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Anna Radoslavova (European Organization for Nuclear Research, Goethe University Frankfurt)17/05/2026, 14:00
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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Sarah GEFFROY (Université Paris-Saclay, CNRS/IN2P3, IJCLab)17/05/2026, 14:00
On behalf of the GBAR collaboration
The GBAR (Gravitational Behavior of Antihydrogen at Rest) experiment receives particle beams from the AD/ELENA facility at CERN, the world's unique source of low-energy antiprotons.The AD/ELENA facility is also unique in its deceleration of GeV beams created using CERN proton-synchroton (PS) machine. * According to the 2023 review, the beam delivered...
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Xiazhen Xu (University of Science and Technology of China)17/05/2026, 14:00
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)17/05/2026, 14:00
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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Yuta Kawase (Iwate University)17/05/2026, 14:00MC7.T16: Pulsed Technology (magnet and power supplies)Student 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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Antonin Sauret (European Synchrotron Radiation Facility)17/05/2026, 14:00
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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VIVEK KUMAR (Jawaharlal Nehru University)17/05/2026, 14:00
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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Mr Jinming Zhang (National Synchrotron Radiation Laboratory, University of Science and Technology of China)17/05/2026, 14:00MC5.D03: Calculations of EM fields Theory and Code DevelopmentsStudent Poster 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)17/05/2026, 14:00MC2.A18: Photon sources: Energy Recovery Linacs (ERLs)Student 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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2811. Experimental Measurement of Wakefield Dephasing During Proton Bunch Self-Modulation. (SUP3014)Helena Jaworska (Heinrich Heine University Düsseldorf)17/05/2026, 14:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationStudent Poster Presentation
Dephasing between the driver and witness is one of the main mechanisms limiting witness energy gain in plasma acceleration. We show time-resolved, picosecond-scale measurements of the self-modulating proton driver in AWAKE (Advanced WAKefield Experiment at CERN) as a function of plasma length, revealing the evolution of this drive bunch caused by transverse wakefield development and dephasing....
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Charles Zhang (Cornell University (CLASSE))17/05/2026, 14:00
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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2943. Experimental Validation of an Additively Manufactured 1.3 GHz Radio Frequency Cavity (SUP7012)Mr Hermann Winter (Universität der Bundeswehr München)17/05/2026, 14:00MC7.T35: Advanced Manufacturing Technologies for Accelerator ComponentsStudent Poster 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... -
Lise Pauwels (European Organization for Nuclear Research, Université Libre de Bruxelles)17/05/2026, 14:00
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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Sean OTool (Stanford University)17/05/2026, 14:00
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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Lewis Kennedy (John Adams Institute for Accelerator Science, University of Oxford, European Organization for Nuclear Research)17/05/2026, 14:001MC5.D01: Beam Optics Lattices, Correction Schemes, TransportStudent Poster 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 performance of both...
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Aaron Liberman (Weizmann Institute of Science)17/05/2026, 14:00MC3.A09: Advanced techniques/Novel sources: Muon Accelerators, Neutrino Factories, Muon CollidersStudent Poster Presentation
Since their inception, laser-wakefield accelerators (LWFAs) have shown their capability to produce high-quality, monoenergetic electron beams. Yet, the push toward higher electron energies and more efficient accelerators is constrained by several limitations. Foremost among these are the dephasing and diffraction limits. A promising strategy to address these issues involves using structured...
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Ruaa Alharthy (University of Wisconsin–Madison)17/05/2026, 14:00MC1.A09: Muon Accelerators, Neutrino Factories, Muon CollidersStudent Poster 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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David Squires (Karlsruhe Institute of Technology)17/05/2026, 14:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationStudent Poster 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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Mr Haowei Hu (Tsinghua University)17/05/2026, 14:001MC2.T26: Photon sources: Photon Beam Lines and ComponentsStudent Poster 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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Denis Ilia (Deutsches Elektronen-Synchrotron DESY, Universität Hamburg)17/05/2026, 14:00MC6.D13: Instrumentation: Artificial IntelligenceStudent Poster 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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Peter Owusu (Arizona State University)17/05/2026, 14:00MC3.T02: Advanced techniques/Novel sources: Electron SourcesStudent Poster 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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Arnaud CIEPLAK (Laboratoire de Physique des 2 Infinis Irène Joliot-Curie)17/05/2026, 14:00MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsStudent Poster 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... -
Zexin Cao (University of Science and Technology of China)17/05/2026, 14:00
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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Yan Zhao (Tsinghua University)17/05/2026, 14:00Student Poster 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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Yang Xiong (Key Laboratory of Particle & Radiation Imaging (Tsinghua University), Ministry of Education, Beijing, China, Laboratory for Advanced Radiation Sources and Application, Tsinghua University, Beijing, China, Department of Engineering Physics, Tsinghua University, Beijing, China)17/05/2026, 14:00MC5.D09: Emittance manipulation, Bunch Compression and CoolingStudent Poster 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)17/05/2026, 14:00MC3.A15: Advanced techniques/Novel sources: New Acceleration Concepts and TechniquesStudent Poster 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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Jorge Herranz (IFMIF-DONES España, Universidad de Granada)17/05/2026, 14:00
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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Oleksandr Naumenko (European Organization for Nuclear Research)17/05/2026, 14:00MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsStudent Poster 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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Weihong Huang (Tsinghua University)17/05/2026, 14:00MC5.D05: Coherent and Incoherent Instabilities Theory, Simulations, Code DevelopmentStudent Poster 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)17/05/2026, 14:00
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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Paula Desire Valdor (European Organization for Nuclear Research, University of Groningen)17/05/2026, 14:00MC1.A09: Muon Accelerators, Neutrino Factories, Muon CollidersStudent Poster 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)17/05/2026, 14:001MC1.A09: Muon Accelerators, Neutrino Factories, Muon CollidersStudent Poster 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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Hangzhou Li (University of Science and Technology of China)17/05/2026, 14:00MC1.A04: Colliders: Circular Accelerators and Storage RingsStudent Poster 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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Katrin Holzfeind (TU Wien)17/05/2026, 14:00MC4.T12: Hadron accelerators: Beam Injection/Extraction and TransportStudent Poster 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. Four different methods of moving the working point...
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Anthony Gilfellon (Cockcroft Institute)17/05/2026, 14:00MC5.D03: Calculations of EM fields Theory and Code DevelopmentsStudent Poster Presentation
The UK XFEL (United Kingdom X-ray Free Electron Laser) is a proposed accelerator facility that will use predominantly 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, fabrication tolerances, assembly and installation can lead to...
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Mrs Esraa Khidr (Johannes Gutenberg University Mainz)17/05/2026, 14:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportStudent Poster 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)17/05/2026, 14:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportStudent Poster 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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Chahinez Boutelaa (Université Paris-Saclay, CNRS/IN2P3, IJCLab)17/05/2026, 14:00
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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YuanYuan Qin (Tsinghua University)17/05/2026, 14:00MC3.T02: Advanced techniques/Novel sources: Electron SourcesStudent Poster 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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Giulia Nigrelli (European Organization for Nuclear Research, Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, Sapienza University of Rome)17/05/2026, 14:00
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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Purinut Lersnimitthum (Université Paris-Saclay)17/05/2026, 14:00
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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Tong Li (Tsinghua University)17/05/2026, 14:00
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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Ao Liu (ShanghaiTech University), Ji Li (Shanghai Zhangjiang Laboratory)17/05/2026, 14:00MC5.D05: Coherent and Incoherent Instabilities Theory, Simulations, Code DevelopmentStudent Poster 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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Sean Moskaitis (Facility for Rare Isotope Beams)17/05/2026, 14:00
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)17/05/2026, 14:00
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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Johan Holmberg (Lund University)17/05/2026, 14:001MC4.A09: Hadron accelerators: Muon Accelerators, Neutrino Factories, Muon CollidersStudent Poster 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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Patrick Hunchak (University of Saskatchewan)17/05/2026, 14:00
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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3030. Laser phase noise measurements and analysis in High-power Optical Enhancement Cavity (SUP7622)Zhou Yang (Tsinghua University)17/05/2026, 14:00
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)17/05/2026, 14:00MC3.T25: Advanced techniques/Novel sources: LasersStudent Poster 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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ZhenWei Wang (Shanghai Institute of Applied Physics, Chinese Academy of Sciences)17/05/2026, 14:00
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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Alex Whitehead (Extreme Light Infrastructure Beamlines, Czech Technical University in Prague)17/05/2026, 14:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationStudent Poster 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)17/05/2026, 14:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationStudent Poster 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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Jingyuan Zhao (Tsinghua University)17/05/2026, 14:001MC5.D01: Beam Optics Lattices, Correction Schemes, TransportStudent Poster 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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Ting Wing CHOI (Uppsala University)17/05/2026, 14:00MC1.A09: Muon Accelerators, Neutrino Factories, Muon CollidersStudent Poster 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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Nicole Verboncoeur (Cornell University (CLASSE))17/05/2026, 14:00
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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Silke Van der Schueren (European Organization for Nuclear Research)17/05/2026, 14:00MC5.D03: Calculations of EM fields Theory and Code DevelopmentsStudent Poster 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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Mr Qiyuan Xu (Cockcroft Institute)17/05/2026, 14:00MC6.D13: Instrumentation: Artificial IntelligenceStudent Poster 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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Nimue Schmidt (GSI Helmholtz Centre for Heavy Ion Research, Technical University of Darmstadt)17/05/2026, 14:00
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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Yingjie Dai (Tsinghua University)17/05/2026, 14:00MC5.D05: Coherent and Incoherent Instabilities Theory, Simulations, Code DevelopmentStudent Poster 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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2809. Longitudinal Matching and Timing Control Studies for the PERLE Energy Recovery Linac (SUP5001)Janine Issa (Laboratoire de Physique des 2 Infinis Irène Joliot-Curie)17/05/2026, 14:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportStudent Poster 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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Parker Landon (Boston University, Fermi National Accelerator Laboratory)17/05/2026, 14:00MC5.D09: Emittance manipulation, Bunch Compression and CoolingStudent Poster 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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Ayaka Kondo (Nagoya University)17/05/2026, 14:00MC4.A09: Hadron accelerators: Muon Accelerators, Neutrino Factories, Muon CollidersStudent Poster 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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Mr Ashish Sharma (Indian Institute of Technology Delhi)17/05/2026, 14:00
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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Sophie Gresty (University of Liverpool, Cockcroft Institute)17/05/2026, 14:00
The design of multipole and other magnets for accelerators is typically an iterative process in which the magnet geometry is optimised for the required beam dynamics properties. Modelling the field for a given geometry can be computationally expensive, so exploring the parameter space can be a time-consuming procedure. The task is particularly challenging when complex field properties are...
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BaoHou Liu (University of Science and Technology of China)17/05/2026, 14:00
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... -
Jack Phillips (Particle Beam Physics Lab (PBPL), University of California, Los Angeles)17/05/2026, 14:00MC5.D03: Calculations of EM fields Theory and Code DevelopmentsStudent Poster 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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Annabella Zamora (University of Lausanne)17/05/2026, 14:00Student Poster Presentation
This contribution analyses particle accelerator research through a sociological lens by examining publication collaborations across regions and scientific fields. It combines a database of accelerator counts per country with a large corpus of accelerator-related publications from Web of Science. Rather than focusing on technical differences between machines, the study examines how publication...
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Chiara Maccani (University of Padua, European Organization for Nuclear Research)17/05/2026, 14:00
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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Mr Matthias Kausel (MedAustron)17/05/2026, 14:00
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. A precise knowledge of both the helium and the carbon properties is an essential input for designing treatment monitoring...
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Philipp Müller (Goethe University Frankfurt)17/05/2026, 14:00MC7.T35: Advanced Manufacturing Technologies for Accelerator ComponentsStudent Poster 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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Mattia Stefanelli (European Organization for Nuclear Research, National Institute for Subatomic Physics)17/05/2026, 14:001MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsStudent Poster 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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Arthur Clairembaud (Max Planck Institute for Physics)17/05/2026, 14:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationStudent Poster Presentation
Plasma wakefield accelerators can sustain very high accelerating gradients (1-100GeV/m), but energy gain is often limited by energy depletion of the drive bunch. The AWAKE experiment addresses this limitation by using a 400GeV proton bunch from the SPS. The bunch is much longer than the plasma wavelength and must first transform into a train of microbunches to excite large-amplitude...
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Kantanat Phochanasombut (Chulalongkorn University)17/05/2026, 14:00MC7.T16: Pulsed Technology (magnet and power supplies)Student 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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René Schöder (Helmholtz-Zentrum Berlin für Materialien und Energie)17/05/2026, 14:00
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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Ms Fengyi Zhang (University of Science and Technology of China)17/05/2026, 14:00
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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Trent Thompson (Oak Ridge National Laboratory)17/05/2026, 14:00MC5.D08: High Intensity in Linear Accelerators Space Charge, HalosStudent Poster 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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Fancong Zeng (Chinese Academy of Sciences)17/05/2026, 14:00
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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Annemarie Lauterbach (Goethe University Frankfurt)17/05/2026, 14:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportStudent Poster 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)17/05/2026, 14:00MC5.D11: Code Developments and Simulation TechniquesStudent Poster 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)17/05/2026, 14:00
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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Philipp Ziegler (European Organization for Nuclear Research, Goethe University Frankfurt)17/05/2026, 14:00
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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Vaibhavi Gawas (European Organization for Nuclear Research)17/05/2026, 14:001MC5.D01: Beam Optics Lattices, Correction Schemes, TransportStudent Poster 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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Mr Leonard Thiele (University of Rostock)17/05/2026, 14:00MC4.A09: Hadron accelerators: Muon Accelerators, Neutrino Factories, Muon CollidersStudent Poster 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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Cecilia Abbamonte (Cornell University (CLASSE))17/05/2026, 14:00MC2.A29: Ultrafast electron diffraction and ultrafast electron microscopyStudent Poster 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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Anna Korsun (Université Paris-Saclay, CNRS/IN2P3, IJCLab)17/05/2026, 14:00
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)... -
Ms UPASANA BORDOLOI (Indian Institute of Technology Delhi)17/05/2026, 14:00
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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Emily Jayne Brookes (Helmholtz-Zentrum Berlin für Materialien und Energie)17/05/2026, 14:00MC3.T02: Advanced techniques/Novel sources: Electron SourcesStudent Poster 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)17/05/2026, 14:00
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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Niketan Jakhar (Jawaharlal Nehru University)17/05/2026, 14:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportStudent Poster 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. A dual einzel system is incorporated in the decelerating-accelerating (DA) mode to control beam blow up...
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Yi Wu (École Polytechnique Fédérale de Lausanne)17/05/2026, 14:00
We propose Near Resonance Polarization Modulation (NRPM), a novel method for high-precise beam energy measurement in storage rings. In this technique, a constant-frequency AC kicker is applied near the spin precession frequency, driving the beam spins coherently. The spin tune can be reliably extracted from the time-dependent polarization signal, enabling a very high-precision determination of...
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Prof. Xiaofang Hu (University of Science and Technology of China)17/05/2026, 14:00
In free-electron laser facilities, the amplitude-phase stability of the microwave pulses driving the electron beam is a key factor determining beam energy spread. Aiming at the long bunch train operation mode, this paper proposes a neural network-based amplitude feedforward control for low-level radio frequency (LLRF) systems to suppress intra-pulse amplitude fluctuations. The algorithm has...
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Daniel Kallendorf (Technical University of Darmstadt, GSI Helmholtz Centre for Heavy Ion Research)17/05/2026, 14:00
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)17/05/2026, 14:00MC4.A04: Hadron accelerators: Circular AcceleratorsStudent Poster 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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Helena Alamprese (Facility for Rare Isotope Beams)17/05/2026, 14:00
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)17/05/2026, 14:00MC5.D03: Calculations of EM fields Theory and Code DevelopmentsStudent Poster 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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Aaron Gobeyn (Technical University of Darmstadt)17/05/2026, 14:00
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... -
David El Khoury (Centre National de la Recherche Scientifique, Laboratoire d'Optique Appliquée, Institut Polytechnique de Paris)17/05/2026, 14:00
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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Haiyang Li (Shanghai Institute of Applied Physics, Chinese Academy of Sciences)17/05/2026, 14:00
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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Wenxuan Wu (Tsinghua University)17/05/2026, 14:001MC5.D10: Beam-Beam Effects Theory, Simulations, Measurements, Code DevelopmentsStudent Poster 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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Youpeng Xie (Institute of High Energy Physics, Chinese Academy of Sciences)17/05/2026, 14:00
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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Borja Rodriguez Mateos (European Organization for Nuclear Research)17/05/2026, 14:00MC6.D13: Instrumentation: Artificial IntelligenceStudent Poster 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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Yixing Lu (Shanghai Synchrotron Radiation Facility)17/05/2026, 14:00MC4.A04: Hadron accelerators: Circular AcceleratorsStudent Poster 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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Jincheng Xia (University of Science and Technology of China)17/05/2026, 14:00
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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Maria Aquilina (University of Malta)17/05/2026, 14:00
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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xin xu (University of Science and Technology of China)17/05/2026, 14:00MC3.T39: Advanced techniques/Novel sources: Positron sourcesStudent Poster 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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Corinna Steffen (Heidelberg Ion Beam Therapy Centre)17/05/2026, 14:00MC6.D13: Instrumentation: Artificial IntelligenceStudent Poster Presentation
Previous work has shown that the efficiency of multi-turn injection (MTI) is heavily influenced by the injection bumper curve. By implementing a neural network with a custom loss function based on the given machine limitations from the HIT Medical Synchrotron, the curve was optimized via a sequence of third-order polynomial functions by online training. Experiments with variable epoch lengths...
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Stefano Farina (Sapienza University of Rome)17/05/2026, 14:00MC3.T02: Advanced techniques/Novel sources: Electron SourcesStudent Poster 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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Junha Kim (Pohang Accelerator Laboratory, Ulsan National Institute of Science and Technology)17/05/2026, 14:001MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsStudent Poster 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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Enchen Wu (University of Science and Technology of China)17/05/2026, 14:00
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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Christian Goffing (European Organization for Nuclear Research)17/05/2026, 14:001MC5.D01: Beam Optics Lattices, Correction Schemes, TransportStudent Poster 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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Fatimah Alharthi (University of Manchester)17/05/2026, 14:00Student Poster 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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Felipe Donoso (Karlsruhe Institute of Technology)17/05/2026, 14:00MC5.D11: Code Developments and Simulation TechniquesStudent Poster 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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Margarita Bulgacheva (Technical University of Darmstadt)17/05/2026, 14:00
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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Alexander Klemps (Hamburg University of Technology)17/05/2026, 14:00MC6.D13: Instrumentation: Artificial IntelligenceStudent Poster Presentation
We present a beam dynamics study aimed at 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 strategies for the...
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Mathias Barant (Commissariat à l'Énergie Atomique et aux Énergies Alternatives)17/05/2026, 14:00MC3.T01: Advanced techniques/Novel sources: Proton and Ion SourcesStudent Poster 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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Tobia Romano (Politecnico di Milano, Riga Technical University)17/05/2026, 14:00MC7.T35: Advanced Manufacturing Technologies for Accelerator ComponentsStudent Poster 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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XiongHao Yuan (Shanghai Institute of Applied Physics, Chinese Academy of Sciences)17/05/2026, 14:00
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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Sangya Li (University of Science and Technology of China)17/05/2026, 14:00MC5.D10: Beam-Beam Effects Theory, Simulations, Measurements, Code DevelopmentsStudent Poster 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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Yanxu Wang (University of Chinese Academy of Sciences)17/05/2026, 14:00MC5.D10: Beam-Beam Effects Theory, Simulations, Measurements, Code DevelopmentsStudent Poster 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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Weiwen Chen (Institute of High Energy Physics, Chinese Academy of Sciences)17/05/2026, 14:00
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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Mr Yuta Kikuchi (Saitama University)17/05/2026, 14:00
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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Zahid Mamud (The Assam Royal Global University)17/05/2026, 14:00
The global transition toward sustainable energy technologies has intensified the search for unconventional lithium resources, including pyrite-bearing organic-rich black shales. This work evaluates the potential application of synchrotron X-ray fluorescence (SXRF) and coupled SXRF–XRD mapping for investigating lithium occurrence in shale systems of North-East India. Conventional analytical...
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Mr Kalyan Tirumalasetty (University of Colorado Denver)17/05/2026, 14:00MC3.A16: Advanced techniques/Novel sources: Advanced ConceptsStudent Poster 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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Julian Melbinger (TU Wien, CIVIDEC Instrumentation (Austria))17/05/2026, 14:00
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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Logan Knudson (University of California, Davis)17/05/2026, 14:00
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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Sergei Sherstiuk (Technical University of Darmstadt)17/05/2026, 14:00MC5.D08: High Intensity in Linear Accelerators Space Charge, HalosStudent Poster 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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Yixuan Luo (Tsinghua University)17/05/2026, 14:00Student Poster 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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Xuanying Song (Tsinghua University)17/05/2026, 14:00MC2.T26: Photon sources: Photon Beam Lines and ComponentsStudent Poster 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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Xianghe Fang (Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati)17/05/2026, 14:00
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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Andrea Cernuschi (Laboratoire de Physique Subatomique et de Cosmologie)17/05/2026, 14:00MC3.A15: Advanced techniques/Novel sources: New Acceleration Concepts and TechniquesStudent Poster 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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Prof. Chao Feng (Shanghai Advanced Research Institute), Qiang Gu (Shanghai Advanced Research Institute, Chinese Academy of Sciences), YUXIN CHENG (Shanghai Institute of Applied Physics, Chinese Academy of Sciences, University of Chinese Academy of Sciences)17/05/2026, 14:00MC2.A29: Ultrafast electron diffraction and ultrafast electron microscopyStudent Poster 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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Yoshihiro Saito (The Graduate University for Advanced Studies, SOKENDAI)17/05/2026, 14:00MC4.A04: Hadron accelerators: Circular AcceleratorsStudent Poster 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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Xinru Gao (University of Science and Technology of China)17/05/2026, 14:00
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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Jan Wirtz (GSI Helmholtz Centre for Heavy Ion Research, Technical University of Darmstadt)17/05/2026, 14:00
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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Evan Ericson (Paul Scherrer Institute)17/05/2026, 14:00MC3.A16: Advanced techniques/Novel sources: Advanced ConceptsStudent Poster 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)17/05/2026, 14:001MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationStudent Poster 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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JUBA TAMAZIRT (Centre National de la Recherche Scientifique)17/05/2026, 14:00
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)17/05/2026, 14:00MC5.D04: Beam Coupling Impedance Theory, Simulations, Measurements, Code DevelopmentStudent Poster 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... -
Guanzheng Wu (University of Science and Technology of China)17/05/2026, 14:00
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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Dr Alan Marcia (Fondazione Bruno Kessler, University of Trento)17/05/2026, 14:00MC3.A15: Advanced techniques/Novel sources: New Acceleration Concepts and TechniquesStudent Poster 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... -
Johan Ribbing (Uppsala University)17/05/2026, 14:00
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... -
Mr Christopher Roper (Los Alamos National Laboratory, Georgia Institute of Technology)17/05/2026, 14:00MC3.T02: Advanced techniques/Novel sources: Electron SourcesStudent Poster 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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Joyce Samantha Romero Jiménez (University of the Basque Country)17/05/2026, 14:00
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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Alberto Bellelli (European Organization for Nuclear Research, TU Wien)17/05/2026, 14:00
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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Markus Engart (Technical University of Darmstadt)17/05/2026, 14:00
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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Shota Nishi (The Graduate University for Advanced Studies, SOKENDAI)17/05/2026, 14:00
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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Elene Kravishvili (Université Paris-Saclay)17/05/2026, 14:00
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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Ingrid Mases (European Organization for Nuclear Research)17/05/2026, 14:00MC4.A17: Hadron accelerators: High Intensity AcceleratorsStudent Poster 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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Emily Howling (John Adams Institute)17/05/2026, 14:00
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)17/05/2026, 14:00MC1.A09: Muon Accelerators, Neutrino Factories, Muon CollidersStudent Poster 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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Areso Sherjan (GSI Helmholtz Centre for Heavy Ion Research)17/05/2026, 14:00MC4.A24: Hadron accelerators: Accelerators and Storage Rings, OtherStudent Poster 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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Shoaib Akbar (Sapienza University of Rome)17/05/2026, 14:00MC3.T02: Advanced techniques/Novel sources: Electron SourcesStudent Poster 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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Shamil Lachynov (Budker Institute of Nuclear Physics)17/05/2026, 14:00
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)17/05/2026, 14:00
The electron cloud effect is the main limiting factor in modem colliders. Therefore, this work studies the effects of electron cloud on charged particle beams in combined-function magnets for the FCC-ee collider using simulations in PyECLOUD and WARP to characterize the maximum secondary electron saturation levels and thus quantify the viability of the accelerator scheme. So on, compared the...
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Yuejing Huang (University of Science and Technology of China)17/05/2026, 14:00
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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YiQun Shi (Institute of High Energy Physics)17/05/2026, 14:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationStudent Poster 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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NanRui Yang (University of Science and Technology of China)17/05/2026, 14:00
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)17/05/2026, 14:00
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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Ana Guisao-Betancur (University of Liverpool, Cockcroft Institute)17/05/2026, 14:00
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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Mr Aras Amini (University of Manchester, Cockcroft Institute)17/05/2026, 14:00MC3.A16: Advanced techniques/Novel sources: Advanced ConceptsStudent Poster 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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Zhiyuan Wang (Tsinghua University)17/05/2026, 14:00MC5.D09: Emittance manipulation, Bunch Compression and CoolingStudent Poster 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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Ms Mahazbeen Sayed (Rajiv Gandhi Technical University)17/05/2026, 14:00
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)17/05/2026, 14:00
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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Oliver Betteridge (Cockcroft Institute)17/05/2026, 14:00MC5.D03: Calculations of EM fields Theory and Code DevelopmentsStudent Poster 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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Karel Peetermans (Deutsches Elektronen-Synchrotron DESY)17/05/2026, 14:00
The Superradiant Terahertz Radiation Generation (STERN) experimental chamber has recently been successfully integrated into the EuXFEL electron beam line. The setup incorporates Cherenkov wakefield structures and a diffraction radiation sheet to generate superradiant Terahertz (THz) pulses as the electron beam passes through. In future operation, these pulses are planned to be delivered to the...
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Zhuoyuan Liu (Tsinghua University)17/05/2026, 14:00
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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Gabriel Ascenção (Brazilian Synchrotron Light Laboratory)17/05/2026, 14:00MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsStudent Poster 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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xiao qu (University of Science and Technology of China)17/05/2026, 14:00MC6.T04: Accelerator/Storage Ring Control SystemsStudent Poster 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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Ms Lisa Beate Dingeldein (Technical University of Darmstadt)17/05/2026, 14:00
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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Binghao Zhang (University of Science and Technology of China)17/05/2026, 14:00
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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3040. The impact of transverse-longitudinal coupling on longitudinal microwave instability (SUP5612)Jihong Bian (Tsinghua University)17/05/2026, 14:00MC5.D05: Coherent and Incoherent Instabilities Theory, Simulations, Code DevelopmentStudent Poster 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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Julian Rausch (Goethe University Frankfurt)17/05/2026, 14:00MC4.A24: Hadron accelerators: Accelerators and Storage Rings, OtherStudent Poster 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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Jack Hirschman (Stanford University, SLAC National Accelerator Laboratory)17/05/2026, 14:00
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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Fatima Basbous (GIP ARRONAX, Nantes Université)17/05/2026, 14:00MC6.D13: Instrumentation: Artificial IntelligenceStudent Poster 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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Maria Ünal (SOLARIS National Synchrotron Radiation Centre)17/05/2026, 14:00
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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Joshua Gray (European Organization for Nuclear Research)17/05/2026, 14:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportStudent Poster 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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Katrina Howard (University of Chicago)17/05/2026, 14:00
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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Quentin Bruant (Commissariat à l'Énergie Atomique et aux Énergies Alternatives)17/05/2026, 14:00
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)17/05/2026, 14:00MC6.T04: Accelerator/Storage Ring Control SystemsStudent Poster 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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Euan Smith (University of Manchester, Cockcroft Institute)17/05/2026, 14:00
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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Lanpeng Ni (Shanghai Institute of Applied Physics)17/05/2026, 14:00
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)17/05/2026, 14:00
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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Peter McIntosh (Science and Technology Facilities Council)18/05/2026, 09:00
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Stefano Panebianco (Ministère de l’Enseignement Supérieur et de la Recherche)18/05/2026, 09:05
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Jean Daillant (European Synchrotron Radiation Facility)18/05/2026, 09:15
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Jean SUSINI (Synchrotron soleil)18/05/2026, 09:20
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Pierre Vedrine (Commissariat à l'Énergie Atomique et aux Énergies Alternatives)18/05/2026, 09:25
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Hervé Savajols (Grand Accélérateur National d'Ions Lourds)18/05/2026, 09:30Invited Oral Presentation
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Dr Hanna Franberg Delahaye (Grand Accélérateur National d'Ions Lourds)18/05/2026, 09:35Invited Oral Presentation
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Robin Ferdinand (Grand Accélérateur National d'Ions Lourds, Commissariat à l'Energie Atomique)18/05/2026, 09:40
The Grand Accélérateur National d'Ions Lourds (GANIL) is a multi-beam facility, unique in intensity, particle types and simultaneous production. The Sys-tème de Production d’Ions Radioactifs en Ligne de 2ème génération (SPIRAL2) facility covering an excep-tionally broad intensity range, from nanoamperes to milliamperes further enhances the scientific opportu-nities of the laboratory. The first...
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Mark Thomson (University of Cambridge)18/05/2026, 10:10
The Update for the European Strategy for Particle Physics will take place over 2025, with various community inputs and an open symposium. Many are eagerly awaiting the outcome and what it means for CERN and large collider projects worldwide. If the response from the ESPP is clear and decisive, then this talk will be an opportunity to elaborate CERN's plans with the international accelerator...
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Laurent Chapon (Advanced Photon Source)18/05/2026, 11:10
Synchrotron light sources are undergoing a major transformation, driven by the need for higher brilliance, greater efficiency, and more advanced experimental capabilities. The transition to 4th generation synchrotrons is enabling groundbreaking research in imaging, spectroscopy, and materials science, with improvements in accelerator design, beam stability, and data handling. Key advancements...
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Masashi Otani (High Energy Accelerator Research Organization, Japan Proton Accelerator Research Complex)18/05/2026, 11:401MC4.A09: Hadron accelerators: Muon Accelerators, Neutrino Factories, Muon CollidersInvited Oral Presentation
The realization of low-emittance muon beams through cooling and acceleration is a pivotal technology with significant potential to advance various scientific disciplines, ranging from fundamental particle physics to applied material science. Recently, we successfully demonstrated, for the first time, the acceleration of positive muons generated by resonant multi-photon ionization of muonium...
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Natalia Milas (European Spallation Source)18/05/2026, 12:10
The European Spallation Source (ESS) is in the final stages of commissioning its linear accelerator (linac), which will deliver a high-power proton beam for neutron production. The commissioning process involves progressive testing of subsystems, including the ion source, radio-frequency quadrupole (RFQ), and superconducting cavities, to ensure stable and reliable beam operation. Key...
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Mr Mathieu VALLEAU (Synchrotron soleil)18/05/2026, 14:00
Undulators are widely employed on accelerator-based light sources. The length of these devices is usually constrained by the length of the straight sections, and this will become even more critical for Diffraction Limited Storage Rings based on existing Synchrotrons, where the number of magnets required to store the electron beam is huge. Thus, to reach high brightness and flux, the total...
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Jingyu Tang (University of Science and Technology of China)18/05/2026, 14:00MC1.A02: Lepton Circular CollidersInvited Oral Presentation
The Super Tau-Charm Facility (STCF) was proposed as a third-generation circular electron-positron collider in the energy range of 2-7 GeV (CoM) and with a luminosity greater than 5*10^34 cm^-2s^-1 @4 GeV, aiming to explore charm physics and tau physics in the next decades. This presentation will introduce the facility design and R&D efforts for STCF, including the design goal, accelerator and...
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Stephane Sanfilippo (Paul Scherrer Institute)18/05/2026, 14:302MC7.T10: Superconducting MagnetsInvited Oral Presentation
Over the past decade, the Magnet Section at the Paul Scherrer Institute (PSI) has developed extensive expertise in superconducting magnet design, construction, and testing, forming the foundation for SMILE (Superconducting Magnets to Improve Large Research Facilities Efficiency) - a proposed R&D initiative that brings together PSI experts and international partners. SMILE’s primary goal is to...
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Steinar Stapnes (European Organization for Nuclear Research)18/05/2026, 14:30
Linear e⁺e- colliders can provide a broad physics programme spanning centre-of-mass energies from the Z pole to the TeV scale, enabling precision measurements of the Higgs boson, top quark, and the electroweak sector with polarised beams. Two mature accelerator technologies are under development for a possible linear collider facility (LCF) at CERN beyond the HL-LHC: the superconducting RF...
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Pei Zhang (Institute of High Energy Physics, University of Chinese Academy of Sciences)18/05/2026, 15:00MC7.T07: Superconducting RFContributed Oral Presentation
The High Energy Photon Source (HEPS), recently commissioned in Beijing, is a 6 GeV diffraction-limited storage-ring light source. A double-frequency RF system was adopted, comprising five 166.6 MHz superconducting RF (SRF) cavities acting as the fundamental and two 499.8 MHz SRF cavities serving as the third harmonic for bunch lengthening. A β=1 quarter-wave SRF cavity was developed in-house...
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Jorg Wenninger (European Organization for Nuclear Research)18/05/2026, 15:00
The Large Hadron Collider (LHC) run in 2025 was the last long production year of LHC Run 3 (2022 to 2026). To mitigate potential radiation damage to magnets installed in the low-beta sections due to the integrated radiation dose near the high luminosity experiments, a flat optics was used for the first time in beam operation, underlining the adaptability of the LHC. A record production of 125...
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Paul Jurj (Imperial College London)18/05/2026, 15:201MC1.A02: Lepton Circular CollidersContributed Oral Presentation
The muon collider concept promises a unique opportunity to push the energy frontier in particle physics. The large muon mass suppresses synchrotron radiation and allows the acceleration and collision of the beams in rings and the use of technology more similar to hadron colliders. Muons are point-like, in contrast to protons, and thus can achieve a similar physics reach with less energy,...
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Ting-Yi Chung (National Synchrotron Radiation Research Center)18/05/2026, 15:20MC7.T15: Technology: Undulators and WigglersContributed Oral Presentation
To generate white beam with various polarization, we have designed and constructed tapered APPLE undulators. A typical APPLE adjusts the polarization and photon energy through four-axis phase motions and a single-axis gap change. In addition to these mechanisms, our design incorporates rotational and translational structures to further extend the accessible energy spectrum. In this...
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Sophie Gresty (University of Liverpool, Cockcroft Institute)18/05/2026, 15:401MC7.T09: Normal Conducting MagnetsContributed Oral Presentation
The design of multipole and other magnets for accelerators is typically an iterative process in which the magnet geometry is optimised for the required beam dynamics properties. Modelling the field for a given geometry can be computationally expensive, so exploring the parameter space can be a time-consuming procedure. The task is particularly challenging when complex field properties are...
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Robert Apsimon (Lancaster University, Cockcroft Institute)18/05/2026, 15:401MC1.A03: Linear Lepton CollidersContributed Oral Presentation
The Ghost Collider is a proposal for a 550 GeV center-of-mass (275 GeV per beam) linear collider with four interaction regions, each with the design luminosity. The primary innovation is the use of “ghost bunches” containing equal numbers of electrons and positrons, therefore being electrically neutral. In the linacs, energy is transferred between electrons and positrons in the same bunch,...
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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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
: 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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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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Yuhui Dong (Chinese Academy of Sciences)19/05/2026, 09:001MC2.A05: Synchrotron Radiation FacilitiesInvited Oral Presentation
The first 4th generation light source in China, HEPS, has been constructed and commissioned. The new light source is expected to produce the emittance of less than 100 pm.rad that can provide hard X-rays with the brilliance higher than 10^22 photons/sec/mm^2/mrad^2/0.1%B.W. In order to stably operate this ultra-low emittance ring, HEPS accommodated the advanced swap-out beam injection scheme,...
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Adrian Hillier (Science and Technology Facilities Council)19/05/2026, 09:001MC8.U02: Materials Analysis and ModificationInvited Oral Presentation
Muons are generated at several accelerator-based facilities around the world and can be implanted into a wide range of materials, acting as a local probe of the surrounding atomic environment. By measuring the muon’s precession and relaxation can provide an understanding of the material of interest and, from this, unique information is obtained on the static and dynamic properties. This has...
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Elisabeth Renner (TU Wien)19/05/2026, 09:301MC8.U01: Health & BiologyContributed Oral Presentation
Patient irradiation with mixed 4He2+ and 12C6+ ion beams is a promising proposal for online monitoring in carbon ion therapy. Over the past years, major developments have enabled the generation of such beams at MedAustron, where they are now used in accelerator, detector, and medical physics research projects.
This contribution summarizes the key innovations that made this achievement...
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Laurent Nadolski (Synchrotron soleil)19/05/2026, 09:301MC2.A05: Synchrotron Radiation FacilitiesContributed Oral Presentation
SOLEIL II [1] is the French upgrade project of SOLEIL delivering next-generation synchrotron light source through a full renewal of the accelerator complex, the upgrade of 29 beamlines and three laboratories, and a major IT transformation. The compact 2.75 GeV, 354 m Storage Ring will reach 50 pm round-beam emittance using an atypical 7BA–4BA lattice, extensive use of permanent-magnet...
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Giulia Bazzano (ENEA Frascati Research Centre)19/05/2026, 09:501MC8.U08: Radiation EffectsContributed Oral Presentation
The ENEA Frascati Particle Accelerator Laboratory operates a set of S-band electron and proton linear accelerators providing beams relevant for radiation-effects studies in the aerospace sector. The TOP-IMPLART proton LINAC delivers low-energy (1–6 MeV) and high-energy (up to 71 MeV) beams, while the REX and TECHEA facilities supply 3.5–5 MeV and 1–3 MeV electron beams, respectively; both can...
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Dr Alexander Molodozhentsev (Extreme Light Infrastructure Beamlines)19/05/2026, 09:502MC2.A06: Free Electron Lasers (FELs)Contributed Oral Presentation
The ELI Beamlines Centre, situated near Prague in the Czech Republic and operating as part of ELI ERIC, has been designated as the second pillar of the EuPRAXIA distributed user facility. It is developing a user-focused programme centred on laser–plasma accelerators (LPAs). A key initiative involves creating an LPA-driven free-electron laser (FEL) for the XUV and soft X-ray water-window...
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Bo Liu (Shanghai Advanced Research Institute, Chinese Academy of Sciences)19/05/2026, 10:10MC2.A06: Free Electron Lasers (FELs)Contributed Oral Presentation
The SHINE is a high repetition-rate X-ray FEL facility, based on an 8-GeV CW superconducting RF linac, which will become one of the most powerful photon srouces in the world. This project is initiated in 2018 and is under construction up to now. It has been designed to build an 8 GeV CW SCRF linac at repetition rate as high as 1 MHz, 2 beamlines to deliver photons between 0.2 and 15 keV and 6...
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Annabella Zamora (University of Lausanne)19/05/2026, 10:101MC8.U11: Outreach and CommunicationsContributed Oral Presentation
This contribution examines particle accelerator research through a sociological lens. It combines a database of accelerator counts per country with a large corpus of accelerator-related publications from Web of Science to analyse how infrastructure distribution shapes scientific collaboration across regions and disciplines. The results reveal marked geographical asymmetries: some regions...
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Brigitte CROS (Laboratoire de Physique des Gaz et des Plasmas)19/05/2026, 11:001MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationInvited Oral Presentation
Laser wakefield acceleration (LWFA) of electrons occurs when an intense short laser pulse focused in an underdense plasma drives in its wake a plasma wave with an amplitude large enough to trap and accelerate electrons. Relativistic electron bunches are easily obtained through this mechanism and have given rise to a large number of studies and publications. Despite these efforts, the...
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Jiancheng Yang (Institute of Modern Physics, Chinese Academy of Sciences)19/05/2026, 11:00MC4.A17: Hadron accelerators: High Intensity AcceleratorsInvited Oral Presentation
HIAF is one of the next generation heavy ion accelerators under construction in China. It is composed of a superconducting ion linear accelerator, a high-energy synchrotron booster, a high-energy radioactive isotope beam line, an experimental storage ring and multiple experimental setups. Characterized by unprecedented intense ion beams from hydrogen through uranium, HIAF can produce a large...
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Aaron Liberman (Weizmann Institute of Science)19/05/2026, 11:30MC3.A09: Advanced techniques/Novel sources: Muon Accelerators, Neutrino Factories, Muon CollidersInvited Oral Presentation
Since their inception, laser-wakefield accelerators (LWFAs) have shown their capability to produce high-quality, monoenergetic electron beams. Yet, the push toward higher electron energies and more efficient accelerators is constrained by several limitations. Foremost among these are the dephasing and diffraction limits. A promising strategy to address these issues involves using structured...
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Haik Simon (GSI Helmholtz Centre for Heavy Ion Research), Helmut Weick (GSI Helmholtz Centre for Heavy Ion Research), Martin Winkler (GSI Helmholtz Centre for Heavy Ion Research)19/05/2026, 11:30
Generation of rare isotope beams by means of in-flight separation of nuclear fragments and fission products requires complex optical structures usually comprising multiple separator stages. Large apertur magnets providing maximum acceptance, radiation hard and superconducting are used to separate the reference isotope from the bulk of the primary and secondary heayv ion beam. The pre-separator...
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Mary Convery (Fermi National Accelerator Laboratory)19/05/2026, 12:001MC4.A04: Hadron accelerators: Circular AcceleratorsInvited Oral Presentation
The largest hadron accelerator facility in the US is undergoing radical changes and the undertaking of new HEP-driven neutrino research. This talk will discuss the wide-ranging projects and impacts to the accelerator community taking place at FNAL.
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Eito Iwai (Japan Synchrotron Radiation Research Institute, RIKEN SPring-8 Center)19/05/2026, 12:00MC6.D13: Instrumentation: Artificial IntelligenceInvited Oral Presentation
Leveraging Machine Learning (ML), we aim to automate and simplify the complex tuning of the XFEL light source accelerator, SACLA, thereby delivering extreme XFEL performance tailored to experimental user needs. Since 2020, we have implemented a Bayesian Optimization (BO)-based automated tuning framework at SACLA. This enables us to meet the detailed XFEL requirements for the approximately ten...
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Grace Cho (RFHIC Corporation)19/05/2026, 13:30MC7.T35: Advanced Manufacturing Technologies for Accelerator ComponentsSponsored presentation
RFHIC presents measured performance from its 150 kW, 500 MHz GaN-on-SiC Solid-State Amplifier system, for the 4th Generation Synchrotron Radiation (4GSR) project at Pohang Accelerator Laboratory. Results demonstrate 62% system efficiency, sub-0.25 dB gain flatness, sub-1° phase variation over 48 hours, MTTF exceeding one million hours, and validated graceful degradation under multi-module...
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Agostino Marinelli (SLAC National Accelerator Laboratory)19/05/2026, 14:00MC2.A06: Free Electron Lasers (FELs)Invited Oral Presentation
Following the first demonstration of isolated attosecond FEL pulses in 2018 and the Nobel prize in (tabletop) attosecond science in 2023, demand for attosecond x-ray pulses has increased exponentially.
This talk would review recent advances in attosecond pulse generation, including: attosecond lasing at LCLS-II; the first demonstration of attosecond super-radiance; and a measurement of FEL...
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Maud Baylac (Laboratoire de Physique Subatomique et de Cosmologie)19/05/2026, 14:00
Particle accelerators have become essential instruments for fundamental research and also to improve our health, high-tech abilities or safety. Accelerating particles to high energies require a large amount of energy and energy sustainability is an unavoidable challenge for future accelerators. Among several solutions developed to minimize energy consumption, the project Innovate for...
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Iryna Chaikovska (Laboratoire de Physique des 2 Infinis Irène Joliot-Curie)19/05/2026, 14:30MC2.A26: Photon sources: Compton sourcesInvited Oral Presentation
ThomX is a compact Compton-based X-ray source demonstrator constructed and operated at IJCLab on the Université Paris-Saclay campus (Orsay, France). The facility comprises a 70 MeV linac, a transfer line, an 18 m storage ring and an extraction line. At the interaction point, laser pulses stored in a high-finesse Fabry-Perot cavity collide with circulating electron bunches, generating X-rays...
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Aditya Singh Thakur (European Organization for Nuclear Research), Audrey Piccini (European Organization for Nuclear Research), Chiara Marrelli (European Spallation Source), Graeme Burt (Lancaster University), Igor syratchev (European Organization for Nuclear Research), Lee Millar (European Organization for Nuclear Research), Nuria Catalan-Lasheras (European Organization for Nuclear Research), Zaib Un Nisa (Lancaster University)19/05/2026, 14:301MC7.T08: RF Power SourcesInvited Oral Presentation
The tristron was already proposed many years ago but was never developed to a stage, where it could be mass produced. Based on IOTs, the tristron promises to achieve RF efficiencies above 90% for a wide frequency and power range. Building on the development of high-efficiency klystrons, CERN is proposing this new device as the power source of choice for future colliders like the FCC. The talk...
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Joseph Calvey (Argonne National Laboratory)19/05/2026, 15:001MC2.A05: Synchrotron Radiation FacilitiesContributed Oral Presentation
For swap-out operation in the APS-Upgrade storage ring, the injector must supply a full charge bunch in one shot. For 200 mA operation in 48 bunch timing mode, the required charge per bunch is 16 nC, which is challenging for the injector chain. In this paper we report on the present status of high charge operation and discuss upcoming improvements to increase the charge limit. We also...
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Susana Izquierdo Bermudez (European Organization for Nuclear Research)19/05/2026, 15:001MC7.T10: Superconducting MagnetsContributed Oral Presentation
Future high-energy proton colliders will require high-field accelerator magnets beyond the capabilities of Nb-Ti technology. The Nb₃Sn quadrupole magnets developed for the High-Luminosity LHC upgrade represent the first large-scale application of this technology in an operational accelerator. Following an extensive short-model R&D program—comprising about 40 coils and seven 1.5 m-long...
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Chad Pennington (University of California, Los Angeles)19/05/2026, 15:20MC7.T06: Normal Conducting RFContributed Oral Presentation
The electron source at the MOTHRA beamline is a novel 0.5-cell cryogenic C-band photoinjector designed to operate at gradients up to 200 MV/m. This work reports on recent developments toward implementing a load lock and modular cathode backplane that enables the insertion and testing of next-generation photocathode materials and structures under high-field, cryogenic operating conditions. The...
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Dr Mark Johnson (Science and Technology Facilities Council)19/05/2026, 15:201MC2.A08: Photon sources: Linear AcceleratorsContributed Oral Presentation
The CLARA facility at Daresbury Laboratory is a medium energy user facility for wide range of applications such as novel acceleration, cancer-therapy, and advanced diagnostics research. CLARA is currently finalising beam commissioning after an extended period of technical systems commissioning. During this period CLARA hosted its first set of “friendly” user experiments in its dedicated...
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Nicole Neveu (SLAC National Accelerator Laboratory)19/05/2026, 15:40MC7.T07: Superconducting RFContributed Oral Presentation
LCLS-SC achieved first light in 2023, and continues to ramp up performance. The linac consists of 35 cryomodules at 1.3 GHz, plus two cryomodules operating at the 3rd harmonic (3.9 GHz). The high repetition rate linac has been operating at 3.8 GeV regularly since 2024. As with any SRF machine, quenches occurred both during commissioning (as a part of normal processing), and during normal...
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Masamitsu Aiba (Paul Scherrer Institute)19/05/2026, 15:401MC2.A04: Photon sources: Circular AcceleratorsContributed Oral Presentation
Commissioning of SLS 2.0, the first light-source storage ring employing a substantial number of permanent magnets to realize a compact multi-bend achromat lattice, began in January 2025. As reported at IPAC'25, the nominal beam current of 400 mA was achieved within the first three months of accelerator-dedicated commissioning. Since then, significant additional progress has been made, such as...
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Ameya Patwardhan (Eindhoven University of Technology)19/05/2026, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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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Michael Ehrlichman (SLAC National Accelerator Laboratory)20/05/2026, 09:001MC8.A28: Applications: Industrial AcceleratorsInvited Oral Presentation
Techniques for generating light with particle accelerators have so far proven difficult to industrialize. Accelerator-based light sources are typically housed at universities and national laboratories, which prioritize fundamental scientific discovery over economic and operational considerations like cost efficiency and 24/7 consistency. By contrast, EUV lithography in semiconductor...
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Michiko Minty (Brookhaven National Laboratory)20/05/2026, 09:00
As a cornerstone of US Nuclear Physics, the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory (BNL) concluded operations this year, marking the end of a remarkable 25-year era of colliding beam research. Originally designed to deliver ion-ion collisions over a broad range of energies, including species of unequal mass, RHIC’s capabilities were later expanded to support a...
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Francesco Grespan (Istituto Nazionale di Fisica Nucleare)20/05/2026, 09:30MC4.A08: Hadron accelerators: Linear AcceleratorsContributed Oral Presentation
Normal conducting proton and ion linacs are vital components for applications in medical treatments, research, and industrial uses. As front-end of high-power proton linacs, they play a critical role in the initial acceleration and conditioning of the proton beam, setting the foundation for successful beam acceleration and high-power performance. INFN is engaged in different projects for...
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Naoko Iida (High Energy Accelerator Research Organization)20/05/2026, 09:30MC1.A02: Lepton Circular CollidersContributed Oral Presentation
A synchrotron injection scheme for the SuperKEKB high-energy ring (HER) was implemented and experimentally evaluated. The lattice at the HER injection point was configured to provide a large horizontal dispersion of –1.6 m, and the sextupoles were optimized accordingly. Because an abort system is located near the injection point, the optics design was constrained to ensure compatibility with...
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Stephen Brooks (Brookhaven National Laboratory)20/05/2026, 09:501MC4.A12: Hadron accelerators: Fixed Field Accelerators (FFAs)Contributed Oral Presentation
The FLASH hadron therapy accelerator proposed by Trbojevic uses permanent magnets with nonlinear fields to allow rapid cycling from 10 to 250MeV while keeping the ring tune constant. A test beamline of four cells from this ring (22.5 degree angle) was built at BNL and tested at the NSRL facility with protons and at the Tandem Van de Graaff with deuterons. The magnets consist of 24...
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Alexei Blednykh (Brookhaven National Laboratory)20/05/2026, 09:501MC1.A17: Colliders: High Intensity AcceleratorsContributed Oral Presentation
The Electron-Ion Collider (EIC) will begin science operations with a staged machine configuration that imposes well-defined accelerator-physics constraints on achievable luminosity and beam parameters. This paper presents the performance strategy that supports the first 3-5 years of the EIC Science Program. We outline the accelerator-physics activities required to deliver high-repetition-rate...
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Omar Kamalou (Grand Accélérateur Nat. d'Ions Lourds)20/05/2026, 10:10MC4.A08: Hadron accelerators: Linear AcceleratorsContributed Oral Presentation
Since 2019, the SPIRAL2 SC linear accelerator at GANIL (Grand Accélérateur National d’Ions Lourds) produces pulsed to CW ion beams from A/Q=1 to 3.
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Beam time during the last 4 years was mainly dedicated to experiments in the NFS room with D+ at energies from 1 to 40 MeV, frequently using the bunch selector allowing neutron time-of-flight measurements.
Part of the beam time was also used to... -
Yi Wu (École Polytechnique Fédérale de Lausanne)20/05/2026, 10:10MC1.A30: Colliders: Polarized beamsContributed Oral Presentation
We propose Near Resonance Polarization Modulation (NRPM), a novel method for high-precision beam energy measurement in storage rings. In this technique, a constant-frequency AC dipole is applied near the spin precession frequency, driving the beam spins coherently. The spin tune can be reliably extracted from the time-dependent polarization signal, enabling a very high-precision determination...
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Alex Picksley (Lawrence Berkeley National Laboratory)20/05/2026, 11:002MC3.A09: Advanced techniques/Novel sources: Muon Accelerators, Neutrino Factories, Muon CollidersInvited Oral Presentation
We measure the high-intensity laser propagation throughout meter-scale, channel-guided laser-plasma accelerators by adjusting the length of the plasma channel on a shot-by-shot basis, showing high-quality guiding of 500 TW laser pulses over 30 cm in a hydrogen plasma of density 𝑛≈10^17 cm−3. We observed transverse energy transport of higher-order modes in the first ≈12 cm of the plasma...
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Rama Calaga (European Organization for Nuclear Research)20/05/2026, 11:00MC5.D03: Calculations of EM fields Theory and Code DevelopmentsInvited Oral Presentation
RF systems for transverse deflection, also known as crab cavities, have been considered for many accelerator facilities in the last decade. This contribution reviews their application to storage ring light sources and colliders, both circular and linear. The constraints for the implementation of crab cavities in these accelerators and the technical challenges, with a focus on the recent...
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Alex Fomin (Université Paris-Saclay, CNRS/IN2P3, IJCLab)20/05/2026, 11:30MC5.D01: Beam Optics Lattices, Correction Schemes, TransportContributed Oral Presentation
PERLE is a high-current, multi-turn Energy Recovery Linac currently entering its construction phase, being developed as a demonstrator for advanced ERL technology and future high-power electron facilities. The staged construction and commissioning schedule foresees single-turn energy recovery in 2029, with full three-turn operation planned for 2031. Achieving these milestones requires an...
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Dr Judita Beinortaitė (Deutsches Elektronen-Synchrotron DESY)20/05/2026, 11:30MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationContributed Oral Presentation
Radiofrequency linacs accelerate thousands of bunches per second, which should be matched by beam-driven plasma wakefield accelerators (PWFAs) if their benefits as high-acceleration-gradient energy boosters are to be fully exploited. However, demonstrations to date have accelerated only ~10 bunches per second. At FLASHForward, key issues are being solved to bridge this gap. Analytic models...
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Wei Hou Tan (SLAC National Accelerator Laboratory)20/05/2026, 11:50MC3.T02: Advanced techniques/Novel sources: Electron SourcesContributed Oral Presentation
High gradient radio frequency (rf) driven photoguns are photoemission electron sources that have important applications for accelerator-based instruments, such as light sources and electron microscopy. Numerous efforts have been made to push for even higher field gradient while suppressing rf breakdowns. We propose the Compressed Ultrashort Pulse Injector Demonstrator, a 1.6 cell photogun...
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Sean Littleton (SLAC National Accelerator Laboratory)20/05/2026, 11:50MC5.D01: Beam Optics Lattices, Correction Schemes, TransportContributed Oral Presentation
The recently-commissioned Linac to End Station A (LESA) beamline was designed to deliver high-energy electrons to experiments in End Station A, such as the Light Dark Matter eXperiment (LDMX). Since LDMX requires single electrons at a high repetition rate, dark current from the 186 MHz LCLS-II electron gun provides a convenient low-current source that can be extracted parasitically from the...
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Masao Kuriki (Hiroshima University)20/05/2026, 12:101MC3.A09: Advanced techniques/Novel sources: Muon Accelerators, Neutrino Factories, Muon CollidersContributed Oral Presentation
Muography is a useful technology for non-destructive inspection of a large-scale structure. Muography with cosmic ray muons has limitations such as low rates, particularly low muon rates in the horizontal direction, and energy spreading, which require long observation times and limit its resolution. Worldwide, large structures such as bridges built during the economic development period of the...
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Bettina Kuske (Helmholtz-Zentrum Berlin für Materialien und Energie)20/05/2026, 12:10MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsContributed Oral Presentation
The successful non-linear performance of 4th-generation light sources can be supported through a proper design of the linear lattice. However, important quantities like the injection efficiency and the beam lifetime depend on the optimization of non-linear magnetic fields like sextupoles, octupoles (and sometimes decapoles) in the lattice and therefore on numerical optimization. The underlying...
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Jean-Luc Revol (European Synchrotron Radiation Facility)20/05/2026, 14:00
Sustainability is becoming a key requirement for projects and developments, from design and procurement to operation, and end-of-life management.
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Direct and indirect emission, transport are two topics for which key performance indicators are today well identified. On the other end, procurement which contribute largely to green house gas emission is more difficult to evaluate.
This session... -
Seongyeol Kim (Pohang University of Science and Technology)20/05/2026, 14:00MC5.D09: Emittance manipulation, Bunch Compression and CoolingInvited Oral Presentation
Manipulating phase space of the beam distribution is increasingly important not only for advanced accelerator concepts but also for X-ray free electron lasers (FELs). In the case of hadron cooling, a prime example is magnetized beams, where cross-plane correlations between two transverse phase spaces dominate the beam dynamics. Precisely controlling these cross-plane couplings—either by...
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Mr Cennini Enrico (European Organization for Nuclear Research)20/05/2026, 14:05Industrial Presentation
Sustainability is becoming a key requirement for large-scale research infrastructures, supported in Europe by a demanding regulatory framework with directives and guidance on best practices.
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This presentation will describe the evolution from the Environmentally Responsible Procurement Policy project to the CERN Sustainable Procurement project outlining how the Organization progressively... -
Ping He (Institute of High Energy Physics)20/05/2026, 14:20Industrial Presentation
The sustainability of particle accelerators in Asia represents a complex challenge involving environmental, economic, scientific, and geopolitical considerations. As Asian nations expand investments in large-scale accelerator facilities such as synchrotrons, cyclotrons, and linear accelerators, these infrastructures are increasingly recognized as essential tools for scientific innovation,...
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Yoshihiro Shobuda (Japan Proton Accelerator Research Complex, Japan Atomic Energy Agency)20/05/2026, 14:301MC5.D07: High Intensity Circular Machines Space Charge, HalosInvited Oral Presentation
The RCS at J-PARC is a kicker-impedance-dominant machine, which exceeds the impedance budget from a classical viewpoint. However, we have achieved a 1-MW beam without any transverse feedback by fully utilizing the indirect space charge effect to suppress beam instabilities.
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Although the indirect space charge effect is beneficial, the beam instability can still occur in a high-intensity beam... -
Benjamin Bromberger (RI Research Instruments GmbH)20/05/2026, 14:35Industrial Presentation
RI Research Instruments is a supplier to particle accelerator projects all over the world. We build the research instruments needed for a sustainable world and we also build an ever more sustainable company.
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Our actions and ambitions are laid out in our sustainability report. They strive for reduction of our CO2 footprint and contributions to the UNs Sustainable Development Goals (SDG).
In... -
Mr VINCENT SIGALO (SIGMAPHI S.A.)20/05/2026, 14:42
Based on over 20 years of experience in technical procurement and industrialization of particle accelerator systems, this presentation addresses the practical challenges of implementing sustainable procurement strategies in highly constrained industrial environments.
Through concrete feedback from major international projects, including collaborations with research institutes and fusion...
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Jean-Luc Revol (European Synchrotron Radiation Facility)20/05/2026, 15:00
This topic will address current challenges in attracting, training, and retaining highly skilled technical staff for accelerator development and operation. Insights will be shared by laboratories and industry.
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Accelerator schools will be presented.
The objective is to discuss how laboratories, universities, and companies can encourage the next generation to pursue careers in ... -
Elaf Musa (Deutsches Elektronen-Synchrotron DESY)20/05/2026, 15:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportContributed Oral Presentation
Accurate lattice-optics correction is essential for achiev-
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ing the design performance of modern light sources and
future circular colliders targeting ultra-low emittances. Such
machines rely on strong magnets that are highly sensitive
to field and alignment errors. In this work, we investigate
approaches for the correction of the linear optics of sev-
eral accelerators. The study... -
Elias Métral (European Organization for Nuclear Research)20/05/2026, 15:05
Since 1994, the Joint Universities Accelerator School (JUAS) has provided postgraduate education in the science and technology of particle accelerators to nearly 1,600 students. Most have earned credits toward Master's or Doctoral degrees at our Partner Universities across Europe, while others—whether from universities worldwide or early-career professionals—have sought to deepen their...
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Rachel Margraf-O'Neal (Argonne National Laboratory)20/05/2026, 15:20MC5.D09: Emittance manipulation, Bunch Compression and CoolingContributed Oral Presentation
Low-emittance microbunched electron beams are a key ingredient in free-electron lasers (FELs), facilitating gain and coherence in radiation production. It has been proposed, such as by the Compact X-ray FEL (CXFEL) group at Arizona State University, that nano-scale microbunching could be produced by rotating transverse beamlets into the longitudinal plane. Such a technique could make...
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John Byrd (Argonne National Laboratory)20/05/2026, 15:25Industrial Presentation
The US Particle Accelerator School (USPAS) is celebrating its 45th anniversary this year. The USPAS provides training and workforce development in the science and technology of charged particle accelerators and associated systems. Historically, the school attendees primarily represented universities and national laboratories with relatively few from industry. However, over the past few years,...
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Ysabella Kassandra Ong (Istituto Nazionale di Fisica Nucleare)20/05/2026, 15:401MC6.D13: Instrumentation: Artificial IntelligenceContributed Oral Presentation
The application of Artificial Intelligence (AI) and Machine Learning (ML) to particle accelerator systems has emerged as an effective strategy for managing complex operations and enhancing performance. At INFN-Legnaro National Laboratories (INFN-LNL), both offline and online AI/ML-driven approaches have been developed to improve beam dynamics, reduce setup times, and increase overall...
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Anna Balažic (Cosylab)20/05/2026, 15:40Industrial Presentation
Topics addressed:
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Who we are: Cosylab was founded in 2001 as a spin-off of the Josef Stefan Institute, established by a physicist and his students. Today, we have about 270 people, with around one-third physicists and two-thirds engineers and computer scientists.
How we build experts: To contribute effectively to accelerator projects, our team needs four things: technical skills, knowledge... -
Kyle Hazelwood (Fermi National Accelerator Laboratory)20/05/2026, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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, 16:00
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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