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Chuhao Li (Tsinghua University)17/05/2026, 14:00MC4.A04: Hadron accelerators: Circular AcceleratorsPoster Presentation
The longitudinal localized excitation slow extraction methodย 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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XinYa Sun (Shanghai Advanced Research Institute, Chinese Academy of Sciences)17/05/2026, 14:00MC8.U04: Isotope ProductionPoster Presentation
Ac-225 is a crucial isotope for targeted alpha therapy, yet its clinical application is severely constrained by supply shortages. The use of high-intensity proton beams 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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Lewis Kennedy (European Organization for Nuclear Research)17/05/2026, 14:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
The most recent Beam Delivery System (BDS) performance results reported for CLIC at 1.5~TeV are based on the 3~TeV lattice operating at reduced energy. A new, dedicated BDS has therefore been developed for the 1.5 TeV stage, exploiting the reduced impact of radiation effects at lower energy. The new design benefits from an increase in average dispersion, enabling weaker chromaticity-correcting...
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Alice Renaux (Centre National de la Recherche Scientifique)17/05/2026, 14:00MC6.T24: Instrumentation: Timing and SynchronizationPoster 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)17/05/2026, 14:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
The design of fourth-generation light sources is hindered by high dimensionality and strong nonlinearities, rendering the traditional paradigm of "manual matching followed by stepwise fine-tuning" inefficient and lacking in physical interpretability. This paper proposes a modular optimization framework that fuses physics priors with statistical learning to achieve synergistic optimization of...
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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, 14:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The CERN Proton Synchrotron faces increasingly demanding requirements from its user community, driven by the need for higher-intensity beams that push the machine to the limits of beam stability. Transverse instabilities, such as head-tail and transverse-mode-coupling instabilities, can arise at specific stages of the machine cycles, depending on the beam parameters. This work introduces a...
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Jin Lin (Tsinghua University)17/05/2026, 14:00MC2.A26: Photon sources: Compton sourcesPoster Presentation
We proposed a novel method of using nuclear resonance fluorescence (NRF) as a probe for spectrum measurements. By utilizing the continuous tunability of an ICS source, NRF photons can be excited at different points across the spectrum. The shape of the energy spectrum can then be effectively scanned and reconstructed by recording the relative NRF yields at different energy points. The...
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junjie ren (Institute of High Energy Physics)17/05/2026, 14:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The High Energy Photon Source(HEPS) is China's first and world-leading fourth-generation high performance synchrotron radiation light source. To meet beam commissioning requirements and better monitor the beam status of HEPS, a beam loss measurement(BLM) system based on scintillator detectors has been designed and installed. This paper conducted a qualitative analysis of the BLM system...
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Maria Paula Rey Barrera (Paul Scherrer Institute)17/05/2026, 14:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
A visible-light 2D imaging monitor was developed and commissioned in the Swiss Light Source 2.0 booster ring to characterize transverse beam behavior during the energy ramp. Installed dwnstream of a bending magnet, it extracts visible synchrotron radiation via an in-vacuum copper mirror and uses a CMOS camera with motorized optics and filters. The setup accommodates the evolving synchrotron...
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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 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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Ryan Yeung (Michigan State University)17/05/2026, 14:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
Performance drift has been a longstanding problem for accelerators. A desirable solution is to tune the machine slowly and gently to compensate for such drift. Previously, we presented a version of the Multi-Generation Gaussian Process Optimizer which tunes accelerator settings during operation to maintain optimal performance. In this paper, we present an improved version of the algorithm and...
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Rishvana Parveen (University of Petroleum and Energy Studies)17/05/2026, 14:00MC8.U08: Radiation EffectsPoster Presentation
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, 14:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
Radio-frequency (RF) bunch-merging gymnastics is used in the RHIC heavy-ion program to combine individual source pulses into single bunches with suitable intensity. 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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2968. Adaptive Reinforcement Learning Control for Long-Duration Stability of FEL Operation (SUP6601)Bowen Zhang (Shanghai Advanced Research Institute)17/05/2026, 14:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
During operation of free-electron laser (FEL) facilities, the beam trajectory is highly susceptible to parameter sensitivities, real-time drifts, and environmental disturbances, leading to significant degradation of beam quality. Conventional control methods rely on accurate system models and struggle to handle uncertainties, nonlinear couplings, and dynamic perturbations encountered in...
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Xiaopeng Xu (University of Science and Technology of China)17/05/2026, 14:00MC7.T14: Vacuum TechnologyPoster Presentation
The Hefei Advanced Light Facility (HALF), currently under construction, is a fourth-generation synchrotron radiation source operating in the low-energy region (2.2 GeV) and based on diffraction-limited storage ring technology. The storage ring employs a modified hybrid 6BA lattice with a beam emittance of 86.3 pmยทrad 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 IntelligencePoster Presentation
The application of Artificial Intelligence (AI) and Machine Learning (ML) in particle accelerator systems has become an effective strategy for handling 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 accelerator...
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qiuyu zhang (University of Science and Technology of China)17/05/2026, 14:00MC7.T17: Technology: Alignment and SurveyPoster Presentation
The storage ring of the Hefei Advanced Light Facility has a circumference of approximately 480 m and consists of 20 hybrid six-bend achromatic (H6BA) lattice units with a natural emissivity of approximately 86 pmยทrad. 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 Fernรกndez Ortega (Instituto de Fรญsica Corpuscular)17/05/2026, 14:00MC6.T27: Instrumentation: Low Level RFPoster Presentation
A read-out system comprising a local oscillator (LO) and down-conversion electronics [1] was developed to process the signals from a cavity beam position monitor (cBPM) installed at the end of the Accelerator Test Facility (ATF) linac at KEK, Japan. The cBPM [2] operates with a dipole-mode signal centered at 1.725 GHz, which must be down-converted to a lower frequency suitable for digital...
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Yan Wang (Huazhong University of Science and Technology)17/05/2026, 14:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
Accurate evaluation of the beam energy and energy spread plays a crucial role in the commissioning and operation of electron accelerators. The energy analysis (EA) system, consisting of a dipole with associated upstream and downstream drift sections, is widely applied in accelerator facilities due to its structural simplicity, large measurement range, and high resolution. However, assembly...
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Yuxin Han (Shanghai Institute of Applied Physics)17/05/2026, 14:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
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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Sean OTool (Stanford University)17/05/2026, 14:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
We report a technique for fabricating optically transparent x-ray optics by laser drilling precision pinholes in diamond membranes. This work supports a novel diagnostic under development at SLAC which will profile the Coulomb field of relativistic electron bunches with attosecond-um spatio-temportal resolution.
Diamond is chosen for its specific transmission window extending from RF...
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Omar Hassan (TRIUMF, University of Victoria)17/05/2026, 14:00MC6.T33: Online Modelling and Software ToolsPoster Presentation
Implementing automated tuning techniques has been a priority at TRIUMF, driven by the need to support the significant increase in RIB availability expected with the new Advanced Rare Isotope Laboratory (ARIEL). This efficiency boost will facilitate a broad spectrum of research in nuclear, particle, and astrophysics. This work outlines the shift from manual tuning to an automated approach for...
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Joshua Gregory (Lancaster University)17/05/2026, 14:00MC6.T24: Instrumentation: Timing and SynchronizationPoster Presentation
The Advanced Wakefield Experiment (AWAKE) at CERN demands state-of-the-art timing and synchronisation performance. Upgrades due for completion 2029 require sub-50 fs laser synchronisation from its distributed laser systems to achieve experiment baselines. Accordingly, a time-of-flight stabilised all-optical timing distribution network in development with Lancaster University aims to establish...
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Johan Lundquist (Lund University)17/05/2026, 14:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
Reaching design performance in modern particle accelerators is a challenge involving many tasks which are time-consuming and difficult to perform. It is always an advantage to be able to simplify high-level operational tasks and measurements through the assistance of optimization techniques. In this work we applied Bayesian optimization via the XOpt framework with the aim to simplify and...
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Divya Divya (TU Wien)17/05/2026, 14:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Accurate measurement of shot-to-shot fluctuations in electron beams produced by laser-plasma accelerators (LPAs) is important for their development. Reliable monitoring of beam reproducibility and stability is crucial for 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, 14:00MC1.A02: Lepton Circular CollidersPoster Presentation
The next luminosity milestone at SuperKEKB requires improved emittance preservation of the injected beams, which remains a key limitation of the injector chain. Although emittance growth in the LINAC and beam-transport (BT) lines has been studied previously, the combined impact of collective effects, lattice imperfections, and other uncertainties is still not fully understood.
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A major... -
Thomas Fogg (Particle Therapy Research Center)17/05/2026, 14:00MC8.U01: Health & BiologyPoster Presentation
Ultra-High-Dose-Rate (UHDR) / FLASH radiotherapy with proton pencil beams requires particle fluxes that saturate current clinical dosimetry, such as ionisation chambers. Before UHDR proton therapy can be clinically implemented, novel dosimetry techniques must be developed that reduce the uncertainty on delivered dose to within clinical accuracies. One promising solution is to image gas Beam...
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Jiacheng Wu (Deutsches Elektronen-Synchrotron DESY)17/05/2026, 14:00MC6.T18: Instrumentation: Radiation Monitoring and SafetyPoster Presentation
The European XFEL is a free-electron laser facility based on a superconducting linac with high bunch repetition rates of up to 4.5 MHz. An L-shaped corrugated structure has been installed upstream of the SASE1 undulator for fresh-slice operation and ultrashort-pulse generation. As the electron beam passes through the structure, strong longitudinal and transverse wakefields are excited which...
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Keyvan Tabaei (University of Isfahan)17/05/2026, 14:00MC5.D04: Beam Coupling Impedance Theory, Simulations, Measurements, Code DevelopmentPoster Presentation
The 30 MeV Karaj-C30 cyclotron, developed for medical and industrial radioisotope production, accelerates Hโป ions to 15โ30 MeV and Dโป ions below 15 MeV using a carbon stripper foil for extraction. The system features a filament-based negative hydrogen multicusp ion source providing 1โ2 mA, an injection line with optical elements, a two-sector electromagnet, and an RF resonator. Beam profiles...
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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 DevelopmentsPoster Presentation
To achieve its design luminosity of $1 \times 10^{35} \text{cm}^{-2}\text{s}^{-1}$, the Super Tau-Charm Facility (STCF) currently under design in China employs the crab-waist collision scheme with an ultra-low $\beta_y^*$. While this configuration enables a beam-beam parameter of $\xi_y \sim 0.1$, it also increases sensitivity of luminosity to beam-beam effects and their interplay with...
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Daniel Dewitt (Technical University of Darmstadt)17/05/2026, 14:00MC3.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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Jincheng Xiao (University of Science and Technology of China)17/05/2026, 14:00MC5.D03: Calculations of EM fields Theory and Code DevelopmentsPoster Presentation
Photon masks and tapered transitions in the Hefei Advanced Light Facility (HALF) storage ring are typical transition structures that can make non-negligible contributions to the geometric impedance. In this work, ECHO3D is used to benchmark the CST calculations for these two types of structures. The longitudinal and transverse wake potentials, the corresponding impedance spectra, and the...
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Jesus Avila Pulido (Paul Scherrer Institute)17/05/2026, 14:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
The Swiss Light Source upgrade, SLS 2.0, is a fourth generation storage ring based on a seven-bend achromat design and is currently under commissioning. Precise knowledge and control of the linear optics are essential for optimal machine performance. This contribution presents measurements of the beta function using the quadrupole variation method at 264 locations around the ring. The...
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Mr Guojiang Zhang (Tsinghua University)17/05/2026, 14:00MC2.A26: Photon sources: Compton sourcesPoster Presentation
In high-power Fabry-Perot cavity applications, intracavity laser power can reach hundreds of kilowatts to the megawatt level, causing a non-negligible fraction of the energy to be deposited in mirror coatings and substrates. This absorption induces a range of thermal effects in the cavity, manifesting as instability of the stored power, cavity unlock, and excitation of higher-order mode...
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3003. Challenges of Low Energy External Injection into Laser-Driven Wakefield Accelerators (SUP3018)Mr Jordan Byrne (University of Manchester, Cockcroft Institute)17/05/2026, 14:00MC3.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 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, 14:00MC2.A24: Photon sources: Accelerators and Storage Rings, OtherPoster Presentation
This work presents a comprehensive characterization of the linear and non-linear optics of the SOLARIS storage ring under various operational conditions, including post-shutdown recovery and routine operation. Long-term studies were conducted using key diagnostic systems: the Bunch-by-Bunch Feedback (BBBF) system, LUMOS visible-light diagnostics, the PINHOLE X-ray beamline, and Turn-by-Turn...
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Roberta Provvedi (Paul Scherrer Institute)17/05/2026, 14:00MC5.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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Jan Mezger (Max Planck Institute for Physics)17/05/2026, 14:00MC3.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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Leonie Bauer (Goethe University Frankfurt)17/05/2026, 14:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Raspberry Pi cameras (single board CMOS cameras) have already been successfully implemented for ion beam characterization at IAP Frankfurt and are now also being used to investigate multipacting during cavity conditioning. Multipacting appears caused by resonant secondary electron emission.
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For the standalone rf conditioning of the FRANZ (Frankfurt Neutron Source) RFQ (Radio-Frequency... -
Joel Valerian (The University of Melbourne)17/05/2026, 14:00MC2.T02: Photon sources: Electron SourcesPoster Presentation
The University of Melbourneโs X-band Laboratory for Accelerators and Beams (X-LAB) hosts half of CERNโs high-gradient X-band (11.994 GHz) RF test stand, now known as Mel-BOX, and is currently developing a new X-band electron linear accelerator facility. Mel-BOX will be at the heart of the facility, providing high-power, high-repetition-rate RF to a TD24 accelerating structure. The electron...
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Ruben Heine (Technische Universitรคt Berlin)17/05/2026, 14:00MC5.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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Andrea Vella (University of Malta)17/05/2026, 14:00MC1.T19: Colliders: CollimationPoster Presentation
The Large Hadron Collider (LHC) requires a collimation system to ensure safe operation with both proton and heavy-ion beams. As of 2023, a crystal collimation scheme using bent silicon crystals was introduced to improve the collimation efficiency for heavy-ion beams. However, drifts in the crystal angular position led to the loss of cleaning performance during physics fills. These drifts are...
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Pierluigi Fedeli (University of Ferrara)17/05/2026, 14:00MC2.A24: Photon sources: Accelerators and Storage Rings, OtherPoster Presentation
Radiation emitted by charged particles in ordered crystalline structures can, through channeling radiation and coherent bremsstrahlung, yield enhanced, quasi-monochromatic photon peaks compared with the broad spectra from amorphous bremsstrahlung targets.
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For electron beams from 50 MeV to several GeV, the photon yield can increase and the spectrum can be tuned by varying beam and crystal... -
Jun Kai NG (Shanghai Jiao Tong University)17/05/2026, 14:00MC3.A21: Advanced techniques/Novel sources: Secondary BeamsPoster Presentation
The Shanghai High Repetition Rate XFEL (SHINE) provides an 8 GeV, 1 MHz electron beam, offering a unique high-duty-cycle driver for generating muonsโideal 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 beams generated by...
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Sophia Morton (SLAC National Accelerator Laboratory)17/05/2026, 14:00MC1.A08: Colliders: Linear AcceleratorsPoster Presentation
For next generation particle collider designs, such as the Cool Copper Collider, small beam sizes, short bunch spacing, and beam stability are required to reach the luminosities desired to search for new physics. One challenge to overcome is damping the excitation of higher order modes in accelerating cavities. These modes are excited by wakefields induced by the beam, and must be removed...
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Mr Qiyuan Xu (Cockcroft Institute)17/05/2026, 14:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
Beam imaging cameras can be rapidly damaged in radiation environments such as CERN accelerator beamlines. To mitigate this, a remote beam imaging system is being developed, transporting scintillation light from a screen through a 15 m large core multimode fiber (MMF) to a shielded camera. A key challenge is reconstructing the transverse beam distribution from the MMF output when limited real...
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่ฝๆบ ๅผ (Shanghai Advanced Research Institute, Chinese Academy of Sciences)17/05/2026, 14:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
Real-time optimization of free-electron lasers (FELs) is challenged by high-dimensional parameter sensitivity and beam dynamics drift. We present a deep reinforcement learning (DRL) framework that models FEL tuning as a Markov Decision Process, with multi-diagnostic state representations and safety-regularized rewards. Our approach pre-trains SAC and MAPPO agents in a Genesis simulator with...
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Disha Yadav (University of Petroleum and Energy Studies)17/05/2026, 14:00MC8.U02: Materials Analysis and ModificationPoster Presentation
Accelerator-enabled ion irradiation is a versatile technique for tailoring the structural and electrical properties of materials. By enabling precise defect creation over targeted regions, ion beams provide an effective way for advancing oxide-based electronic devices. This capability is crucial for emerging memory technologies like Resistive Random Access Memory (RRAM), where defect...
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Wenxiang Hu (Paul Scherrer Institute, ETH Zurich)17/05/2026, 14:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
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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Guoqing Kong (Xi'an Jiaotong University)17/05/2026, 14:00MC4.A08: Hadron accelerators: Linear AcceleratorsPoster Presentation
To meet the compactness requirement of cavities for accelerator-based neutron sources, this paper proposes a resonant coupled accelerating cavity design consisting of a ladder Radio Frequency Quadrupole (RFQ) and an Interdigital H-mode Drift Tube Linac (IH-DTL). This cavity combines the advantages of high bunching efficiency of RFQ and high acceleration efficiency of DTL, with an integrated...
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Zichen Zhong (University of Science and Technology of China), Weibo Hu (University of Science and Technology of China)17/05/2026, 14:00MC7.T16: Pulsed Technology (magnet and power supplies)Poster Presentation
Abstract:
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The Super Taume-Charm Facility (STCF), a new generation of electron-positron collider led by the University of Science and Technology of China, requires a high-quality positron source to sustain high-luminosity continuous operation. The Adiabatic Matching Device (AMD) is a critical component for positron focusing, its excitation pulse source requires a peak current โฅ15 kA and a... -
Jincheng Xiao (University of Science and Technology of China)17/05/2026, 14:00MC5.D11: Code Developments and Simulation TechniquesPoster Presentation
In next generation light sources, double RF systems are widely employed to lengthen bunches, thereby enhancing the Touschek lifetime and suppressing IBS effects. However, the harmonic cavity (HC) in such systems can drive various types of longitudinal instabilities, which severely impede effective bunch lengthening. In theory, a low-level feedback (LLRF) system can be used to selectively...
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Zhicheng Huang (University of Science and Technology of China)17/05/2026, 14:00MC7.T06: Normal Conducting RFPoster Presentation
To meet the requirement for high-gradient accelerating structures in future compact accelerator systems, this work presents the design, fabrication, and preliminary testing of an X-band 11.424 GHz parallel-coupled accelerating structure. The structure consists of 16 cells and operates in the ฯ 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, 14:00MC4.A13: Hadron accelerators: CyclotronsPoster Presentation
FLASH proton therapy has shown the potential to reduce normal-tissue toxicity while maintaining tumor control by delivering radiation in ultra-high dose-rate pulses (>40 Gy/s). However, more radiobiology experiments are needed to better understand the subjacent mechanism and optimize its application beam parameters. To explore this regime using the Cyclotron at Centro Nacionalicรฉmoste de...
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Prateek Rao (University of WisconsinโMadison)17/05/2026, 14:00MC1.A09: Muon Accelerators, Neutrino Factories, Muon CollidersPoster Presentation
This study investigates magnetic horn focusing as an alternative to superconducting solenoids for the Muon Collider Demonstrator. We explored a double horn structure as an R&D exercise for a possible muon-collider frontend, tailored to capture pions in the 100-400 MeV/c momentum range. An XGBoost-based optimization pipeline was applied to refine geometric and current parameters to maximize...
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Mr An Wang (University of Science and Technology of China)17/05/2026, 14:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
This paper presents a high-speed, high-precision system for measuring average beam current and lifetime, designed to overcome the limitation of low data refresh rates in existing systems, which fail to capture rapid beam dynamics. A comprehensive performance analysis identified key error sources, including the beam probe, data acquisition card, electromagnetic interference, and quantization...
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Mr Ashish Sharma (Indian Institute of Technology Delhi)17/05/2026, 14:00MC6.T27: Instrumentation: Low Level RFPoster Presentation
The design of low-level feedback (LLRF) controllers used to stabilize the amplitude and phase of the field inside the RF cavities is typically customized, depending on the frequency and mode of operation. IUAC, New Delhi, India, operates accelerators with RF structures in the range of 12.125-97 MHz, in both normal and superconducting modes. Currently, all the LLRF controllers that have been...
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Je Hwan Han (Institute for Rare Isotope Science)17/05/2026, 14:00MC3.T01: Advanced techniques/Novel sources: Proton and Ion SourcesPoster Presentation
RAON is a heavy-ion accelerator facility in Korea that uniquely combines ISOL (Isotope Separation On-Line) and In-Flight (IF) techniques to produce a wide range of Rare Isotope (RI) beams. In the ISOL system, ion sources are continuously being developed to expand RI beam production capabilities. Among them, the Forced Electron Beam Induced Arc Discharge (FEBIAD) ion source is a promising...
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Dinghui Su (Shanghai Institute of Applied Physics)17/05/2026, 14:00MC7.T06: Normal Conducting RFPoster Presentation
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 Institute of Applied Physics)17/05/2026, 14:00MC2.A23: Other Linac Based Photon SourcesPoster Presentation
High energy resolution is crucial for state-of-the-art ARPES and soft X-ray spectroscopy, requiring sources with meV or sub-meV level spectral resolution. Existing FEL and synchrotron beamlines are limited by energy jitter, spectral broadening, or repetition-rate constraints. We are currently developing a compact 500 MeV, 10 MHz light-source scheme based on angular-dispersion induced...
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Salih Colmekci (Northern Illinois University)17/05/2026, 14:00MC3.A15: Advanced techniques/Novel sources: New Acceleration Concepts and TechniquesPoster Presentation
Short Radiofrequency (RF) pulses are a promising method for increasing the achievable accelerating gradient while significantly reducing the RF breakdown probability. The distributed power coupling technique delivers RF power simultaneously to each accelerating cavity through periodic waveguides, resulting in a reduced filling time for the entire accelerating structure. This approach also...
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Baiting Song (Tsinghua University)17/05/2026, 14:00MC5.D09: Emittance manipulation, Bunch Compression and CoolingPoster Presentation
We propose a novel MeV UED beamline design based on a normal-conducting very-high-frequency (VHF) electron gun that generates a high-quality electron beam at a megahertz (MHz) repetition rate. Beam compression and time-of-flight (TOF) control are achieved using an alpha-magnet. Simulations show compression of the 4.1 fC electron beam to a duration of 4.7 fs RMS, with a TOF jitter of 1.9 fs...
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Yelong Wei (University of Science and Technology of China)17/05/2026, 14:00MC7.T06: Normal Conducting RFPoster Presentation
This paper presents the design of an improved SLED pulse compressor for our beam test platform at National Synchrotron Radiation Laboratory (NSRL). It consists of a 3 dB hybrid, a TE10-TE01 mode converter, and a resonator storage cavity. Through geometrical optimizations, the resonator is designed to operate in the TE0,1,10 mode, which offers a high intrinsic quality factor while maintaining...
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Victoria Isensee (Technical University of Darmstadt)17/05/2026, 14:00MC5.D11: Code Developments and Simulation TechniquesPoster Presentation
For maintaining the designed optical performance of machines like the GSI heavy-ion synchrotron SIS18 or the FAIR fragment separator Super-FRS, accurate knowledge of magnetic field and element alignment is crucial. We propose a Gaussian Process model with a physics-informed kernel based on a stochastic ensemble of MAD-X lattices. This approach offers key advantages compared to LOCO (Linear...
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Riku Nomaru (The University of Tokyo)17/05/2026, 14:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
SuperKEKB is an electronโpositron collider that aims to exceed its own world-record instantaneous luminosity by an order of magnitude. During high-current collision operation, various beam instabilitiesโsuch as sudden beam loss, electron-cloud effects, and fast-ion instabilityโcan 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, 14:00MC6.T05: Beam Feedback SystemsPoster Presentation
This paper introduces the development and preliminary testing of a digital bunch-by-bunch feedback system designed to suppress beam oscillations. Coupled-bunch instabilities, which arise under high-current and multi-bunch operation modes, can induce beam oscillations that significantly degrade collision luminosity and reduce beam lifetime. These instabilities necessitate active feedback...
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Jialan Pan (Shanghai Institute of Applied Physics)17/05/2026, 14:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Real-time bunch-by-bunch monitoring of transverse position and longitudinal phase has become increasingly important for the stable operation of storage-ring light sources and for accelerator physics studies. This paper presents a real-time 3D bunch-by-bunch position measurement system based on machine learning. The system first employs high-speed ADCs to perform RF direct sampling on the BPM...
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Rรฉmi Martinie (Paul Scherrer Institute)17/05/2026, 14:00MC7.T20: Technology: Targetry and DumpsPoster Presentation
The Targeted Alpha Tumor Therapy and Other Oncological Solutions (TATTOOS) facility at the Paul Scherrer Institute (PSI) will address the growing demand for medically relevant radionuclides using proton-induced spallation at the PSI High Intensity Proton Accelerator (HIPA). The target is designed to operate with a 100 microA - 590 MeV proton beam at up to 2400 ยฐC for 2โ5 weeks. To study...
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Mayu Wada (The University of Tokyo)17/05/2026, 14:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
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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Mr Zichen Zhong (University of Science and Technology of China)17/05/2026, 14:00MC7.T08: RF Power SourcesPoster Presentation
This paper presents a highly integrated solid-state modulator designed to drive high-power klystrons in linear accelerators. The modulator employs a vertically integrated architecture in which the solid-state module array is directly combined with the high-voltage pulse transformer. This configuration eliminates long high-voltage cable connections, reduces parasitic inductance, and improves...
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Xinru Gao (University of Science and Technology of China)17/05/2026, 14:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Beam diagnostic systems are crucial for the Hefei Advanced Light Facility (HALF), a fourth-generation light source under construction. However, the testing of its key devicesโsuch as Digital Beam Position Monitors (DBPMs), the Fast Orbit Feedback (FOFB) system, and Bunch-by-Bunch (BbB) processorsโis limited by the lack of a laboratory signal generator capable of simulating accelerator physics,...
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ShaoHang Ma (University of Science and Technology of China)17/05/2026, 14:00MC1.A08: Colliders: Linear AcceleratorsPoster Presentation
The Super Tau-Charm Facility (STCF) is a new generation of electron-positron collider under planning, with a designed center-of-mass energy range of 2โ7 GeV. The positrons produced via electron targeting are captured and accelerated by several accelerating structures to an energy of 200 MeV. To reduce beam loss, the positron beam employs large-aperture accelerating structures. The aperture is...
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ShaoHang Ma (University of Science and Technology of China)17/05/2026, 14:00MC1.A08: Colliders: Linear AcceleratorsPoster Presentation
The Super Tau-Charm Facility (STCF) is a next-generation electron--positron collider project proposed in China, designed to explore frontier physics in the tau-charm energy region. The facility's accelerator is required to provide electron and positron beams with tunable energies ranging from 1.0 to 3.5 GeV. This study presents the design of a traveling-wave accelerating structure for the...
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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, OtherPoster Presentation
Electric Dipole Moments (EDMs) are sensitive probes of CP violation and could help address some open questions of the Standard Model. Recent advances in storage ring and polarimetry technologies enabled the development of a new experimental method for EDM investigations. One of the main parameters involved in the EDM studies via storage rings is the Spin Coherence Time (SCT), i.e., the time...
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Axel Perez Ruiz (Accelerators & Cryogenic Systems, Universitรฉ Paris-Saclay, CNRS/IN2P3, IJCLab)17/05/2026, 14:00MC7.T07: Superconducting RFPoster Presentation
PERLE, under construction at IJCLab, is a multi-turn Energy Recovery Linac designed for high intensity electron beams of 10 MW peak power (20 mA, 250 MeV). Simulations of its SRF cryomodule * predict more than 100 W of higher-order-mode (HOM) power per cavity induced by the short bunches, indicating that Beam Line Absorbers (BLAs) at 40 K may be required between cavities to dissipate the HOM...
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Evan Navar Root (Cornell University (CLASSE))17/05/2026, 14:00MC5.D10: Beam-Beam Effects Theory, Simulations, Measurements, Code DevelopmentsPoster 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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Christian Ratcliff (Facility for Rare Isotope Beams)17/05/2026, 14:00MC5.D11: Code Developments and Simulation TechniquesPoster Presentation
The equilibrium longitudinal beam distribution in electron storage rings is can be obtained by numerically solving the FokkerโPlanck equation, which includes the RF potential, collective wake fields, synchrotron-radiation damping, and quantum excitation. Traditional auto-differentiationโbased solvers treat stochastic effects as post-processing corrections, rather than incorporating them...
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Delphine Domange (European Organization for Nuclear Research)17/05/2026, 14:00Poster 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 assessment of powering failure...
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Inci Karaaslan (University of Chicago)17/05/2026, 14:00MC1.A09: Muon Accelerators, Neutrino Factories, Muon CollidersPoster Presentation
Reaching $10^{34}$ $\rm{cm}^{-2}s^{-1}$ luminosity range in a $10$ TeV Muon Collider within the short lifetime of the muon requires the reduction of the 6D emittance of the muon beam in a process described as muon ionization cooling. In the final cooling stage, the transverse emittance must be reduced to $22 \mu$m, typically by allowing longitudinal emittance growth up to downstream acceptance...
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Wanbin Li (University of Science and Technology of China)17/05/2026, 14:00MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsPoster Presentation
Reducing the longitudinal variation of third-order resonance driving terms (RDTs) is much more effective in enlarging storage ring dynamic aperture (DA) than minimizing third-order one-turn RDTs. Recently, we proved the convexity of the quantitative expression for third-order RDT variations. Then, an efficient numerical method for DA optimization was developed, where a high-quality initial...
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Dora Gibellieri (European Organization for Nuclear Research)17/05/2026, 14:00MC1.A02: Lepton Circular CollidersPoster Presentation
Operating at 45.6 GeV with high beam current, low emittances, and long damping times, the FCC-ee low-energy collider configuration is particularly sensitive to collective effects and impedance-induced beam instabilities. Controlling these effects requires a continuously refined impedance model to guide design choices and to establish reliable instability thresholds. Recent studies identify the...
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2909. Effect of the Laser Polarization on Electron Acceleration in Carbon Nanotube Targets (SUP3303)Bruno Silveira Nunes (Instituto de Pesquisas Energรฉticas e Nucleares)17/05/2026, 14:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationPoster Presentation
Structured carbon-nanotube targets can be used as a medium for accelerating self-injected electrons within a laser-driven wakefield bubble, analogous to blowout laser wakefield acceleration (LWFA) in gaseous plasmas. A previous numerical work demonstrated this behavior using a three-cycle, 800 nm, circularly polarized laser pulse with a peak power of 35.5 TW. In this study, we compare electron...
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Weibo Hu (University of Science and Technology of China)17/05/2026, 14:00MC7.T16: Pulsed Technology (magnet and power supplies)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, 14:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The slice energy spread is a critical parameter in free-electron laser (FEL) facilities. A high-brightness injector is typically characterized by a low slice energy spread, which can induce micro-bunching instability and consequently degrade the FEL lasing process. Conventional mitigation involves controlling the slice energy spread using a laser heater, making its precise measurement...
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Siyuan Feng (University of Chinese Academy of Sciences)17/05/2026, 14:00MC1.A04: Colliders: Circular Accelerators and Storage RingsPoster Presentation
Electron cloud effects cause beam instabilities and emittance growth in positron storage rings. PyECLOUD, a 2D macro-particle code for simulating electron cloud build-up, currently uses Particle-in-Cell (PIC) algorithms for electric field calculations. PIC methods scale O(Nยฒ) in computational complexity and are affected by discrete particle noise.
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This work implements the Fast Multipole... -
Ilia Demydenko (V. N. Karazin Kharkiv National University)17/05/2026, 14:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationPoster Presentation
Acceleration by the wakefield in the plasma can provide compact sources of relativistic electron bunches of high brightness. Free electron lasers and particle colliders, for using plasma wakefield accelerators, require high efficiency and bunches with low energy spread with stable shape. To achieve these goals one can use profiled sequence of profiled electron bunches. It was shown that...
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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 TransportPoster Presentation
This work presents the development of a collimated electron beam suitable for acceleration in dielectric laser accelerators (DLA). A thermionic electron gun was designed to produce a stable ~0.2 mm beam under high-vacuum conditions with electron energies of 10โ47 keV. Beam emission and focusing parameters were optimized to enable reliable injection into compact accelerating structures. To...
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Anna Radoslavova (European Organization for Nuclear Research)17/05/2026, 14:00MC1.A01: Hadron CollidersPoster Presentation
Transverse emittance growth can adversely affect the luminosity production performance of colliders such as the Large Hadron Collider (LHC) at CERN. While Intra-Beam Scattering (IBS) and Synchrotron Radiation (SR) effects represent important ingredients for the emittance evolution, measurements in the LHC do not match predictions from these two effects, suggesting the presence of additional...
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Sarah GEFFROY (Universitรฉ Paris-Saclay, CNRS/IN2P3, IJCLab)17/05/2026, 14:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
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, 14:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
Coherent terahertz (THz) radiation sources based on storage rings hold significant future for generating high-average-power THz radiation, owing to the high revolution frequency of the electron beam. However, the achievable repetition rate is limited by the long time required for the ring's damping mechanism to dissipate the phase-space perturbation introduced by the modulation and radiation...
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JianJun XIAO (ShanghaiTech Laboratory for Topological Physics, School of Physical Science and Technology, ShanghaiTech University, State Key Laboratory of Quantum Functional Materials, School of Physical Science and Technology, ShanghaiTech University)17/05/2026, 14:00MC7.T07: Superconducting RFPoster Presentation
Conformal deposition of high-performance superconducting films on complex cavity geometries, particularly ensuring robust film-substrate adhesion, remains a fundamental challenge. We address this by introducing a novel high-power impulse magnetron re-sputtering and sputtering (HiPIMRS) system designed for uniform niobium (Nb) film deposition on the interior surfaces of 1.3 GHz copper cavities....
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Yuta Kawase (Iwate University)17/05/2026, 14:00MC7.T16: Pulsed Technology (magnet and power supplies)Poster Presentation
In the J-PARC muon g-2/EDM experiment, precise control of the muon beam is essential to achieve the required measurement accuracy. For this purpose, the development of a new high-voltage and high-current pulse power supply(kicker power supply) is indispensable. Because the accuracy of the g-2 measurement strongly depends on the uniformity of the magnetic field, and the muon beam must remain...
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Antonin Sauret (European Synchrotron Radiation Facility)17/05/2026, 14:00MC2.A05: Synchrotron Radiation FacilitiesPoster Presentation
In the scope of the upgrade of its injection systems, the European Synchrotron Radiation Facility - Extremely Brilliant Source (ESRF-EBS) has decided to replace the classical 4-kicker bumps injection scheme by a Non-Linear Kickers (NLK) injection scheme in order to achieve a fully transparent injection into the storage ring and minimize the perturbations still seen by the beamlines users....
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VIVEK KUMAR (Jawaharlal Nehru University)17/05/2026, 14:00MC8.U08: Radiation EffectsPoster Presentation
To evaluate radiation tolerance, 25 mol% GdโOโ-doped CeOโ nano powders were synthesized by a sol-gel combustion route and sintered at 800ยฐC, 1000ยฐC, and 1300ยฐC 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 DevelopmentsPoster Presentation
We present a design for the experimental validation of relativistic ponderomotive dynamics on a realistic MeV electron-beam platform. The scheme combines an S-band gun with a co-propagating focused laser pulse to induce longitudinal momentum modulation in relativistic electrons. Using a nonparaxial laser-field model and beam-dynamics simulations, we evaluate the expected post-interaction...
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Connor Monaghan (University of Liverpool)17/05/2026, 14:00MC2.A18: Photon sources: Energy Recovery Linacs (ERLs)Poster Presentation
The PERLE (Powerful Energy Recovery Linac for Experiments) project requires an injector which is capable of delivering a high-current, high-bunch-charge electron beam. Therefore, a key challenge is controlling the effects of space charge forces and the subsequent formation of halo. Beam dynamics simulations of the PERLE injector predict the onset of transverse halo due to a strong space charge...
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Charles Zhang (Cornell University (CLASSE))17/05/2026, 14:00MC2.T02: Photon sources: Electron SourcesPoster Presentation
We use the PHOEBE test beamline at Cornell to experimentally demonstrate a simple method for reconstructing the transverse 4D phase space of an electron beam at the source from downstream aperture scans of the beam. This method does not rely on detailed knowledge of the beamline transport, besides assuming that linearity and symplecticity are satisfied. We apply this method to measure the...
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2943. Experimental Validation of an Additively Manufactured 1.3 GHz Radio Frequency Cavity (SUP7012)Mr Hermann Winter (Universitรคt der Bundeswehr Mรผnchen)17/05/2026, 14:00MC7.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... -
Lise Pauwels (European Organization for Nuclear Research, Universitรฉ Libre de Bruxelles)17/05/2026, 14:00MC4.T19: Hadron accelerators: CollimationPoster Presentation
Studies conducted at CERN's Super Proton Synchrotron (SPS) in 2017 showed an asymmetric off-momentum acceptance for Q20 optics. A systematic mechanical limitation near the defocussing quadrupoles -- the most restrictive regions of the ring in the Q20 optics -- was suggested as a possible explanation for this asymmetry and was addressed during LS2. However, improvements were only observed in...
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Matilda Mwaniki (Illinois Institute of Technology)17/05/2026, 14:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The Integrable Optics Test Accelerator (IOTA) at Fermilab is transitioning from an electron beam facility to a proton beam facility for studies in nonlinear accelerator optics and space-charge dominated proton beams. This project involves the commissioning and fabrication of Ionization Profile Monitors (IPMs) to enable beam profile measurements at IOTA. In general, IPMs work on principle of...
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Aaron Liberman (Weizmann Institute of Science)17/05/2026, 14:00MC3.A09: Advanced techniques/Novel sources: Muon Accelerators, Neutrino Factories, Muon CollidersPoster 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 WisconsinโMadison)17/05/2026, 14:00MC1.A09: Muon Accelerators, Neutrino Factories, Muon CollidersPoster Presentation
This study uses FLUKA simulations to investigate pion production from proton interactions with a graphite target for muon collider applications. A 40 cm target is struck with 0.8 GeV and 8 GeV/c proton beams, and pion yields are evaluated in terms of angular and energy distributions. The dependence of pion yield on target length is also examined, showing saturation near one interaction length...
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David Squires (Karlsruhe Institute of Technology)17/05/2026, 14:00MC3.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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Mr Haowei Hu (Tsinghua University)17/05/2026, 14:00MC2.T26: Photon sources: Photon Beam Lines and ComponentsPoster Presentation
Accurate simulation of partially coherent beam transport and coherence evolution is critical for next-generation accelerator-based light sources. In this work, we develop a dedicated numerical approach for partially coherent EUV beamline propagation to support the optical design and optimization of Steady-State Microbunching (SSMB) beamlines under development at Tsinghua University.* A...
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Denis Ilia (Deutsches Elektronen-Synchrotron DESY, Universitรคt Hamburg)17/05/2026, 14:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
Achieving low emittance at the photoinjector is essential for meeting the performance targets of the European XFEL, particularly for high photon energies and future high-duty-cycle operation. Both the temporal structure of the drive-laser pulse and the RF-gun settings contribute significantly to the final beam quality, yet their optimization is complicated by strong nonlinearities in the laser...
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Peter Owusu (Arizona State University)17/05/2026, 14:00MC3.T02: Advanced techniques/Novel sources: Electron SourcesPoster Presentation
Alkaliโantimonide 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 Irรจne Joliot-Curie)17/05/2026, 14:00MC5.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... -
Lodewyk Steyn (Laboratoire de Physique des Gaz et des Plasmas)17/05/2026, 14:00MC3.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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Zexin Cao (University of Science and Technology of China)17/05/2026, 14:00MC7.T06: Normal Conducting RFPoster Presentation
In order to enhance the accelerating gradient of the 1-meter C-band Traveling-wave accelerating structure prototype, as well as meet the physics requirements on the linear injector of the proposed Jinhua light source (JHLS) project, a compact C-band spherical pulse compressor was developed to boost the output power from klystron. This pulse compressor excites TE114 modes inside the spherical...
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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 CoolingPoster Presentation
A longitudinal localized kick-driven fast extraction technique has been employed to enable three-dimensional (3D) proton pencil beam scanning (PBS) at ultra-high dose rate (FLASH) for large-volume targets. However, it was observed that the longitudinal line density of the proton bunch significantly influences spot dose accuracy. In this study, a hollow bunch methodโimplemented by using two...
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Filip Peczek (University of Manchester)17/05/2026, 14:00MC3.A15: Advanced techniques/Novel sources: New Acceleration Concepts and TechniquesPoster Presentation
Downscaling particle accelerators is crucial to expanding their range of applications. Dielectric-lined waveguides (DLWs) can support hybrid modes with a strong accelerating component. Excited by terahertz (THz) frequency pulses, DLWs can deliver high accelerating gradients over cm-scale interaction lengths, promising the development of future compact electron accelerators. By precisely...
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Alberto Bellelli (European Organization for Nuclear Research, TU Wien)17/05/2026, 14:00MC7.T09: Normal Conducting MagnetsPoster Presentation
To ensure precise control of field quality in normal-conducting accelerator magnets, it is essential to develop models that accurately represent hysteresis during operational cycles. This study focuses on the main magnets of the CERN Super Proton Synchrotron (SPS). We investigate how variations in the current machine's cycles produce different hysteresis patterns in the integral magnetic field...
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Jorge Herranz (IFMIF-DONES Espaรฑa, Universidad de Granada)17/05/2026, 14:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The IFMIF-DONES facility located at Escรบzar 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 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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Mihail Miceski (Extreme Light Infrastructure Beamlines, Czech Technical University in Prague)17/05/2026, 14:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
Recent advances in laser-plasma accelerators (LPAs) have generated high-quality electron beams characterised by high peak currents and low emittance, making them suitable for powering compact, next-generation free electron lasers (FELs). However, variations in laser performance from shot to shot cause mismatches in position and angle at the injection point, complicating efficient beam...
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3073. Impact of Intrabeam Scattering and Space-Charge in the Muon Collider Cooling Channel (SUP1016)Paula Desire Valdor (European Organization for Nuclear Research, University of Groningen)17/05/2026, 14:00MC1.A09: Muon Accelerators, Neutrino Factories, Muon CollidersPoster Presentation
The cooling process is one of the most critical challenges for the future Muon Collider, as muons are initially produced with a very large emittance that must be significantly reduced before acceleration. This cooling must occur rapidly, well within the muon lifetime. At low energies, collective effects such as space charge and intrabeam scattering can strongly influence emittance growth and...
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Weihong Huang (Tsinghua University)17/05/2026, 14:00MC5.D05: Coherent and Incoherent Instabilities Theory, Simulations, Code DevelopmentPoster Presentation
In this paper, we calculate the impact of radiation on the energy spread of electron beams in a free-electron laser, especially in the linear growth region. The results can provide some guidance for the design of the insertion section of a steady-state microbunch storage ring.
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Lisa Soubirou (Universitรฉ Paris-Saclay)17/05/2026, 14:00MC1.A09: Muon Accelerators, Neutrino Factories, Muon CollidersPoster Presentation
Circular muon colliders offer a promising route to multi-TeV center-of-mass energies with high luminosity. The baseline design for the high-energy complex includes a chain of pulsed synchrotrons covering energies from 63 GeV to 5 TeV. This chain combines normal and hybrid synchrotrons, using both fixed-field superconducting and pulsed normal-conducting magnets. The short muon lifetime (2.2...
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Hangzhou Li (University of Science and Technology of China)17/05/2026, 14:00MC1.A04: Colliders: Circular Accelerators and Storage RingsPoster Presentation
The Super Tau-Charm Facility (STCF), a next-generation high-luminosity frontier collider, adopts a large crossing angle with the Crab-Waist scheme to enhanced collision luminosity. The center-of-mass energy range of STCF is 2-7 GeV, and the designed collision luminosity will exceed $0.5 \times 10^{-35} \, \text{cm}^{-2} \text{s}^{-1}$. The STCFโs collider rings are two high-current,...
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Mrs Esraa Khidr (Johannes Gutenberg University Mainz)17/05/2026, 14:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
MESA, the Mainz Energy-Recovery Superconducting Accelerator, currently under commissioning at Johannes Gutenberg University Mainz, is designed to operate in two modes: external beam (EB) mode, with 150 ฮผA polarized electrons at 155 MeV serving the P2 experiment, and energy-recovery linac (ERL) mode, with an unpolarized beam of 1โ10 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, TransportPoster Presentation
Injection efficiency into the Diamond Light Source Storage Ring (SR) is currently optimised by operators performing a grid scan over the final pair of corrector magnets inside the Booster-to-Storage Ring (BTS) transfer line. The phase advance between the pair is sufficient to provide good control over the position and angle of the beam as it enters the SR. However, the method is slow and the...
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Chahinez Boutelaa (Universitรฉ Paris-Saclay, CNRS/IN2P3, IJCLab)17/05/2026, 14:00MC7.T07: Superconducting RFPoster Presentation
Specific heat treatments applied to superconducting radio-frequency (SRF) cavities, such as nitrogen infusion or Mid-T baking, aim to improve the quality factor (Qo) at medium accelerating fields (ห10โ20 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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Giulia Nigrelli (European Organization for Nuclear Research, Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, Sapienza University of Rome)17/05/2026, 14:00MC1.A26: Colliders: Machine Detector InterfacePoster Presentation
The electronโpositron 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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3034. Intensity distribution of high-order harmonics radiation in the superradiant THz FEL (SUP2615)Tong Li (Tsinghua University)17/05/2026, 14:00MC2.A25: THz sourcesPoster Presentation
To achieve a wider frequency tuning range, higher-order harmonics of the superradiant THz FEL could be utilized. Although the radiation pattern of undulator harmonics was theoretically established years ago, the intensity distribution of these harmonics in a superradiant FELโwhich involves complex bunch-train dynamics and FEL emission processesโremains poorly understood. Here, we perform...
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Purinut Lersnimitthum (Universitรฉ Paris-Saclay)17/05/2026, 14:00MC1.A02: Lepton Circular CollidersPoster Presentation
Vibrations cause emittance growth, beam misalignment at the interaction point, and particle loss, limiting accelerator performance. Ground motion and technical noise are characterized by absolute power spectral density (PSD) and spatial correlation. Mechanical support resonances, which amplify these effects, are determined via transfer functions. A method to generate random displacements from...
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Ao Liu (ShanghaiTech University)17/05/2026, 14:00MC5.D05: Coherent and Incoherent Instabilities Theory, Simulations, Code DevelopmentPoster Presentation
Intrabeam Scattering (IBS) is a multiple Coulomb scattering phenomenon between charged particles within a beam, leading to emittance growth and consequent degradation of beam quality. Classical theoretical frameworks for IBS, such as the Piwinski and Bjorken-Mtingwa (BM) formalisms, predominantly rely on the assumption of a Gaussian particle distribution. However, in novel accelerator concepts...
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Sean Moskaitis (Facility for Rare Isotope Beams)17/05/2026, 14:00MC7.T07: Superconducting RFPoster Presentation
Superconducting radiofrequency (SRF) cavity surface treatment with nitrogen-doping (N-doping) was a breakthrough in cavity processing which was found capable of increasing cavity quality factor (Q0) by over a factor of two compared to standard electropolish (EP) surface treatments, as well as achieving a highly desirable anti-Q slope behavior, an increase of Q0 with increasing accelerating...
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Xinyu Jin (University of Science and Technology of China)17/05/2026, 14:00MC7.T14: Vacuum TechnologyPoster Presentation
Maintaining an ultra-high vacuum (UHV) environment is essential for the Hefei Advanced Light Facility (HALF) to achieve its design performance. Owing to the dimensional limitations imposed by small-aperture vacuum chambers, non-evaporable getter (NEG) films are commonly applied to the inner walls to enhance vacuum performance. However, conventional NEG films increase the resistive-wall...
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Johan Holmberg (Lund University)17/05/2026, 14:00MC4.A09: Hadron accelerators: Muon Accelerators, Neutrino Factories, Muon CollidersPoster Presentation
Compressing high-intensity proton beams is of interest in several types of accelerator experiments, e.g. spallation sources, neutrino factories, and muon colliders. For the Muon Collider project, the high average power of 2ย MW and final bunch length of 2ย ns required before the target make this compression challenging. In this paper, an alternative compression scheme to the baseline design of...
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Patrick Hunchak (University of Saskatchewan)17/05/2026, 14:00MC1.A02: Lepton Circular CollidersPoster Presentation
The non-linear effects that arise from misalignment and field errors have been shown to degrade both the dynamic aperture (DA) and (MA) in simulation of the Future Circular Collider electron-positron machine (FCC-ee). This study focuses on using multipoles, such as octupoles, to control the amplitude detuning and higher-order chromaticity as well as investigation of dedicated non-linear...
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Shotaro Matsui (The University of Osaka)17/05/2026, 14:00MC4.T01: Hadron accelerators: Proton and Ion SourcesPoster Presentation
In order to achieve high energy resolution in nuclear physics experiments, it is important to maintain the beam quality during beam transport from the injector to the accelerator and to the experimental instruments. At the Research Center for Nuclear Physics (RCNP), the University of Osaka, high-resolution beams are currently obtained by injecting beams from an ECR ion source into the...
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3030. Laser phase noise measurements and analysis in High-power Optical Enhancement Cavity (SUP7622)Zhou Yang (Tsinghua University)17/05/2026, 14:00MC7.T25: Technology: LasersPoster Presentation
Optical resonators serve as excellent spatiotemporal filters and are widely used for suppressing laser phase noise and stabilizing laser frequency. They can also function as passive optical enhancement cavities, providing power gains of thousands to tens of thousands. High-power optical enhancement cavities hold promise for applications such as steady-state microbunching (SSMB) advanced light...
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Jiaqi Zhang (University of Manchester)17/05/2026, 14:00MC3.T25: Advanced techniques/Novel sources: LasersPoster Presentation
Laser wakefield acceleration (LWFA) can produce accelerating fields of several hundred GV/m, greatly reducing accelerator size and cost. Carbon nanotube (CNT) bundles, featuring high plasma density (>10$^{19}$ cm$^{-3}$), tunable effective density, excellent thermal properties, and empty channels that enable laser propagation, have attracted interest as solid-state plasma sources. Previous...
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ZhenWei Wang (Shanghai Institute of Applied Physics, Chinese Academy of Sciences)17/05/2026, 14:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
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 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)17/05/2026, 14:00MC3.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 โ...
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Ningdong Wang (Cornell University)17/05/2026, 14:00MC5.D08: High Intensity in Linear Accelerators Space Charge, HalosPoster Presentation
Beam dynamics under collective effects such as space charge remains a computationally expensive challenge. We present a latent space surrogate model for collective beam dynamics that significantly accelerates these simulations. The method uses a variational autoencoder to compress 6D particle distributions into a low-dimensional latent space. A learned latent-space dynamical model then...
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Jingyuan Zhao (Tsinghua University)17/05/2026, 14:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
Steady-state microbunching (SSMB) has been proposed as a new light source mechanism to generate high average power coherent radiation in electron storage rings. One approach to achieving SSMB is the reversible microbunching scheme, which introduces a laser-based energy modulation to electron bunches in a localized insertion section to form microbunching, and then uses a subsequent energy...
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Ting Wing CHOI (Uppsala University)17/05/2026, 14:00MC1.A09: Muon Accelerators, Neutrino Factories, Muon CollidersPoster Presentation
The LEnuSTORM (low-energy neutrinos from stored muons) is a proposed facility that enhances the performance of the ESSnuSB* (European Spallation Source Neutrino Super Beam) project by measuring neutrino cross sections in the energy range 200-600\,MeV, where data is largely missing. The facility utilizes a 1.25\,MW proton beam from the European Spallation Source linac, which is compressed in an...
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Silke Van der Schueren (European Organization for Nuclear Research)17/05/2026, 14:00MC5.D03: Calculations of EM fields Theory and Code DevelopmentsPoster Presentation
HeLICS (Helium Light-Ion Compact Synchrotron) is a proposed cancer treatment facility developed within the Next Ion Medical Machine Study (NIMMS) at CERN, designed both for clinical treatment with protons and research with helium ions. Consisting of a triangular lattice with six 60 degree combined-function magnets with 30 degree edge angles, this machine challenges the current treatment of...
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Nimue Schmidt (GSI Helmholtz Centre for Heavy Ion Research, Technical University of Darmstadt)17/05/2026, 14:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
At the heavy-ion accelerator UNILAC at GSI Helmholtz Center for Heavy Ion Research 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 buncher settings were applied to study...
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Yingjie Dai (Tsinghua University)17/05/2026, 14:00MC5.D05: Coherent and Incoherent Instabilities Theory, Simulations, Code DevelopmentPoster Presentation
Storage ring based on steady-state microbunching (SSMB) is a promis-
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ing approach for generating high average power coherent radiation, while
the instabilities driven by coherent undulator radiation in the SSMB laser
modulator (LM) is important for the ring performance. In this paper
we investigate the longitudinal single-bunch multi-turn instabilities using
cavity mode decomposition... -
Parker Landon (Boston University, Fermi National Accelerator Laboratory)17/05/2026, 14:00MC5.D09: Emittance manipulation, Bunch Compression and CoolingPoster Presentation
Investigation into laser-based manipulations on the longitudinal phase-space of bunches has been conducted experimentally at Fermilabโs 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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Xu Yang (University of Science and Technology of China)17/05/2026, 14:00MC1.T12: Colliders: Beam Injection/Extraction and TransportPoster Presentation
The Super Tau Charm Facility (STCF) is a high-luminosity electronโpositron collider operating in a center of mass energy of 2-7 GeV. Its stringent requirements for beam brightness and stability pose significant challenges to the design of the transport system of the injector, especially the positron transport lines of the damping ring. According to the previous work, there is an enormous...
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Ayaka Kondo (Nagoya University)17/05/2026, 14:00MC4.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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Tushnim Yuvaraj (Columbia University)17/05/2026, 14:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
This project develops a machine learningโbased 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)17/05/2026, 14:00MC7.T09: Normal Conducting MagnetsPoster Presentation
The design of multipole and other magnets for accelerators is typically an iterative process in which the magnet geometry is optimized 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, 14:00MC7.T17: Technology: Alignment and SurveyPoster Presentation
To meet the stringent alignment requirements for accelerator magnets in the Hefei Advanced Light Facility (HALF),
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accurate fiducialization of the magnetic center is essential.
This paper presents a high-precision and efficient fiducialization method developed for HALF, based on a single stretched
wire bench integrated with a precision surface plate. The
system enables precise... -
Annabella Zamora (University of Lausanne)17/05/2026, 14:00Poster 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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Albert Hovhannisyan (Center for the Advancement of Natural Discoveries using Light Emission)17/05/2026, 14:00MC7.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 (University of Padua, European Organization for Nuclear Research)17/05/2026, 14:00MC1.A25: Beyond CollidersPoster Presentation
The TWOCRYST experiment at the CERN Large Hadron Collider provides a unique setup to study the behaviour of high-energy beam particles channelled by bent crystals. Two two-dimensional detectors in Roman Pots enable direct observation of channelled protons at energies from 0.45 TeV to 6.8 TeV. We present measured channelled-beam distributions for two bent silicon crystals with 50 urad and 7000...
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Mr Matthias Kausel (MedAustron)17/05/2026, 14:00MC8.U01: Health & BiologyPoster Presentation
The implementation of a sequential injection scheme for mixing helium and carbon ions from different ion sources at the MedAustron accelerator facility enabled the first successful delivery of a mixed helium and carbon ion beam in a synchrotron therapy facility. A precise knowledge of both the helium and the carbon properties is an essential input for designing treatment monitoring...
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Philipp Mรผller (Goethe University Frankfurt)17/05/2026, 14:00MC7.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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Arthur Clairembaud (Max Planck Institute for Physics)17/05/2026, 14:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationPoster 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), Nattakit Chaijaroenmaitree (Chulalongkorn University)17/05/2026, 14:00MC7.T16: Pulsed Technology (magnet and power supplies)Poster Presentation
The Synchrotron Light Research Institute of Thailand is developing a new eddy-current septum magnet as part of the pulsed magnet systems for its next-generation synchrotron light source, the Siam Photon Source II (SPS-II). This work focuses on mechanical design and structural analysis of the septum magnet to improve the prediction of anomalies and potential failures over the machine's...
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Renรฉ Schรถder (Helmholtz-Zentrum Berlin fรผr Materialien und Energie)17/05/2026, 14:00MC7.T07: Superconducting RFPoster Presentation
Mid-T (ca. 220 to 350ยฐC) 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, 14:00MC2.T02: Photon sources: Electron SourcesPoster Presentation
Slice energy spread is a key beam-quality parameter that limits the compression of ultrashort electron bunches. To suppress the RF-dominated slice-energy-spread growth in a photocathode RF gun, a 2.3--2.3 cell configuration with a cascaded cavity with a decelerating field is proposed on the basis of the quasi-DC 2.3-cell X-band gun. Simulations show that, without space-charge effects, the...
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Anthony Gilfellon (Cockcroft Institute)17/05/2026, 14:00MC5.D03: Calculations of EM fields Theory and Code DevelopmentsPoster Presentation
The UK XFEL (UK 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. Errors in manufacturing and assembly of these Niobium RF cavities can lead to certain modes becoming frequency degenerate and mode mixing can occur, whereby the component modes combine to form...
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Matheus Velloso (Brazilian Synchrotron Light Laboratory)17/05/2026, 14:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
The SIRIUS storage ring nonlinear lattice comprises 15 chromatic and 6 achromatic sextupole families. The sextupole strengths currently implemented were determined through online optimization of injection efficiency and deviate by up to 10% from the nominal design values, leaving no accurate nonlinear-lattice model available. This work presents ongoing efforts to calibrate the nonlinear...
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Trent Thompson (Oak Ridge National Laboratory)17/05/2026, 14:00MC5.D08: High Intensity in Linear Accelerators Space Charge, HalosPoster Presentation
Ongoing studies at the Spallation Neutron Source (SNS) Beam Test Facility (BTF) seek to characterize halo formation in the early stages of a high-power linac with specific focus on determining the contribution from mismatched beam transport and to replicate halo measurements using well-benchmarked particle-in-cell simulations. The BTF is a 2.5 MeV, 10- meter test beamline equipped with...
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Fancong Zeng (Chinese Academy of Sciences)17/05/2026, 14:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
In advanced accelerator-based light sources and colliders, bunch compressors like arc-type (DBA) and linear-type (chicane) are widely used to generate high-quality electron beams with kiloampere (kA)-level peak currents. However, a serious problem in increasing the peak current even higher is the significant degradation of beam quality caused by the Coherent Synchrotron Radiation (CSR) effect....
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Annemarie Lauterbach (Goethe University Frankfurt)17/05/2026, 14:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
Multiturn Injection is an essential tool for achieving high beam intensities in synchrotrons. At SIS-18, a significant increase in the intensity of the uranium beam is foreseen, by several orders of magnitude up to 1.5x10e15 ions per injection cycle, prior to acceleration and extraction to SIS-100. Under these conditions, any beam losses during injection become critical, both in terms of beam...
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Jonas Christ (Technical University of Darmstadt)17/05/2026, 14:00MC5.D11: Code Developments and Simulation TechniquesPoster Presentation
Simulations of particle beam dynamics in electron accelerators need to account for both internal space charge effects and transient electromagnetic waves scattered at chamber walls. Commonly, these effects are treated separately using very different simulation techniques. We have developed a coupling procedure to account for both effects simultaneously by using a scattered field formulation....
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Mr Corey Lehmann (University of Oxford)17/05/2026, 14:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The losses measured by Beam Loss Monitors (BLMs) at synchrotron light source facilities offer useful but indirect insight into the state of the beam. Frequent changes to insertion devices, beam current, temperature, humidity, and other factors make the line between normal operation and anomalous behaviour unclear. Data was collected passively during user beam on the storage ring of Diamond...
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Philipp Ziegler (European Organization for Nuclear Research, Goethe University Frankfurt)17/05/2026, 14:00MC1.A02: Lepton Circular CollidersPoster Presentation
In past collider operations, interactions between dust grains and particle beams have had significant detrimental effects on performance. Earlier studies of dustโbeam interactions with proton beams at the LHC typically assumed dust grains smaller than the beam itself. Understanding the dynamics of dust grains exposed to beams much smaller than the grain is crucial for assessing dust-induced...
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Vaibhavi Gawas (European Organization for Nuclear Research)17/05/2026, 14:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
Accurate control of the transverse linear coupling is important for achieving the target luminosity in FCC-ee. We have implemented a simplified FCC-ee coupling model in Xsuite based on linear maps and on local lattice coupling matrices. This approach is benchmarked against the full FCC-ee optics model, showing good agreement in the behavior of betatron tunes, beta functions, and...
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Mr Leonard Thiele (University of Rostock)17/05/2026, 14:00MC4.A09: Hadron accelerators: Muon Accelerators, Neutrino Factories, Muon CollidersPoster Presentation
The future multi-TeV muon collider facility will employ a superconducting radiofrequency (RF) system with thousands of cavities in the rapid-cycling synchrotron (RCS) chain. This RF system, common to both beams, will accelerate two counter-rotating $\mu^+$ and $\mu^-$ bunches simultaneously. Due to the high intensity of up to $2.7 \times 10^{12}$ particles per bunch, the induced voltage in...
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Cecilia Abbamonte (Cornell University (CLASSE))17/05/2026, 14:00MC2.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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Anna Korsun (Universitรฉ Paris-Saclay, CNRS/IN2P3, IJCLab)17/05/2026, 14:00MC1.A02: Lepton Circular CollidersPoster Presentation
Monochromatization is one of the most intriguing proposed operation modes of the FCC-ee, enabling a significant reduction of the centre-of-mass (CM) energy spread to a level comparable to the Higgs bosonโs natural width. Previous studies demonstrated its feasibility using earlier versions of the FCC-ee optics. Building on that foundation, this work presents the updated implementation based on...
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Ms UPASANA BORDOLOI (Indian Institute of Technology Delhi)17/05/2026, 14:00MC8.U02: Materials Analysis and ModificationPoster Presentation
Ion beam irradiation is a powerful technique for defect engineering, offering precise control over ion fluence and energy. In this study, tellurium thin films deposited by thermal vapor evaporation were irradiated with 80 MeV Agโทโบ ions at fluences ranging from 1ร10ยนยน to 3ร10ยนยฒ ions/cmยฒ. 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 fรผr Materialien und Energie)17/05/2026, 14:00MC3.T02: Advanced techniques/Novel sources: Electron SourcesPoster Presentation
Optimising SRF photoinjectors is a challenging task due to the high-dimensional, nonlinearly coupled parameters and competing objectives such as transverse emittance and bunch length. Conventional methods such as manual tuning or MOGA require thousands of evaluations and are impractical for routine operation or computationally expensive simulations. This work presents a multi-objective...
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Xiaodan Liu (Hunan University)17/05/2026, 14:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
Femtosecond hard X-ray radiation beyond 12.4 keV enables unprecedented opportunities for probing matter at atomic scales, however, its generation remains challenging for self-amplified spontaneous emission (SASE)-based XFELs due to reduced FEL gain, leading to extended undulator requirements and limited radiation efficiency. To address this issue, we investigate a multi-stage optical-klystron...
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Niketan Jakhar (Jawaharlal Nehru University)17/05/2026, 14:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
Electrostatic low-energy beam transport* (ELEBT) section as a part of future upgradation proposal in LINAC4 at CERN, is proposed to handle 45 keV H- ion beam with 70 mA max beam current. The design allows maximum input rms normalized emittance of 0.5 ฯ mm mrad without significant growth. Dual einzel system is incooperated in deaccelerating-accelerating (DA) mode to control beam blow up...
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Yi Wu (รcole Polytechnique Fรฉdรฉrale de Lausanne)17/05/2026, 14:00MC1.A30: Colliders: Polarized beamsPoster Presentation
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, 14:00MC6.T27: Instrumentation: Low Level RFPoster Presentation
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, 14:00MC4.A20: Hadron accelerators: Radioactive IonsPoster Presentation
Next generation in-flight fragment separators like the Super-FRS are built with large apertures to accept high momentum spreads. The wide beam and momentum variation gives rise to large aberrations from non-linear effects, if not suppressed precisely.
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Models and simulations are able to predict most effects, but to achieve the highest performance, fine tuning of the ion optics with beams,... -
Sasha Horney (European Organization for Nuclear Research)17/05/2026, 14:00MC4.A04: Hadron accelerators: Circular AcceleratorsPoster Presentation
Optics errors from the interaction points of the LHC, where ฮฒ* 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, 14:00MC1.A01: Hadron CollidersPoster Presentation
Beamโbeam 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 beamโbeam 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 DevelopmentsPoster Presentation
Nonlinear plasma wakefield excitation by an ultra-relativistic square Gaussian beam is simulated using FBPIC code. The beam interaction with the background plasma electrons revealed blowout cavity formation. As the beam propagates further into the plasma, blowout cavity elongation along the beam propagation direction was observed. The corresponding electromagnetic field components excited...
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David El Khoury (Centre National de la Recherche Scientifique, Laboratoire d'Optique Appliquรฉe, Institut Polytechnique de Paris)17/05/2026, 14:00MC2.A26: Photon sources: Compton sourcesPoster Presentation
Laser-driven Compton sources have emerged as a promising compact method for producing X-ray radiation with femtosecond pulse duration. They offer adjustable energy and bandwidth that can be controlled by the parameters of the electron beam and the colliding laser pulse. In addition, the transverse source size can be as small as a micrometer, making such sources of interest for high resolution...
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Haiyang Li (Shanghai Institute of Applied Physics, Chinese Academy of Sciences)17/05/2026, 14:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
Plasma-wakefield-based acceleration offers a route to realize compact X-ray free-electron lasers, but its application is currently limited by beam quality. Two-color X-ray FEL pulses provide a powerful tool for probing ultrafast dynamics. Here we propose a scheme for generating such pulses by using an off-axis elliptical hollow-channel plasma to tailor the electron-beam phase space while...
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Wenxuan Wu (Tsinghua University)17/05/2026, 14:00MC5.D10: Beam-Beam Effects Theory, Simulations, Measurements, Code DevelopmentsPoster Presentation
Traditional analytical models for intrabeam scattering (IBS) typically assume a Gaussian beam distribution in phase space. In this paper, we present an extended analytical IBS model that employs Hermite-Gaussian polynomials as basis functions to calculate the IBS diffusion coefficient for arbitrary phase space distributions. The generating function method is adopted to simplify the relevant...
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Janine Issa (Laboratoire de Physique des 2 Infinis Irรจne Joliot-Curie)17/05/2026, 14:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
In an Energy Recovery Linac (ERL), precise longitudinal dynamics control is essential for both delivering the required bunch parameters at the interaction points and for enabling energy recovery. This paper will specifically talk about these studies for the PERLE accelerator. PERLE (Powerful Energy Recovery Linac for Experiments) is a proposed high-power ERL delivering a 250 MeV, 20 mA beam (5...
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Youpeng Xie (Institute of High Energy Physics, Chinese Academy of Sciences)17/05/2026, 14:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Beam Position Monitors (BPMs) play a critical role in the commissioning and operation of fourth-generation synchrotron light sources, including the High Energy Photon Source (HEPS). By analyzing BPM data, a wide range of beam diagnostics can be performed, while the health and performance of the BPM system itself can also be evaluated. Based on calibration data measured in the laboratory, we...
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Borja Rodriguez Mateos (European Organization for Nuclear Research)17/05/2026, 14:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
Stripper foil degradation at the CERN Low Energy Ion Ring (LEIR) poses a significant challenge for beam operations. As the heavy ion beam passes through the stripper foil at the end of the injecting linac, the foil degrades over time, altering the beam energy distribution and reducing the achievable accumulated intensity in the ring. Addressing this operational limitation using traditional...
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Yifan Lan (Shanghai Institute of Applied Physics)17/05/2026, 14:00MC4.A04: Hadron accelerators: Circular AcceleratorsPoster Presentation
Under the framework of the SSRF proton-and-helium therapy facility project, a compact synchrotron with a 28-meter circumference has been designed for the generation of high-intensity proton and helium beams. To achieve the high-dose-rate design objective, the optics design of this synchrotron has been further optimized. This optimization successfully reduced the maximum value of the envelope...
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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 DevelopmentsPoster Presentation
A very compact Compton spectrometer, capable of measuring single-shot double-differential energy-angle gamma spectra ranging from 180 keV to 28 MeV, has recently been developed at UCLA for installation at SLACโs FACET-II facility. Through the Compton effect, the gammas scatter electrons off a beryllium target. These electrons are then magnetically analyzed by using sextupole-like magnetic...
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Maria Aquilina (University of Malta)17/05/2026, 14:00MC1.A01: Hadron CollidersPoster Presentation
The main performance indicator of a particle collider is the integrated luminosity. It depends not only on operational efficiency, but also on a range of beam parameters to be optimised to enhance performance. It is common to operate a collider with decaying luminosity, due to beam burn-off. However, the planned luminosity upgrade of the LHC (HL-LHC) is based on luminosity levelling: a time...
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Ms Fengyi Zhang (University of Science and Technology of China)17/05/2026, 14:00MC2.A08: Photon sources: Linear AcceleratorsPoster Presentation
In this paper, the Non-dominated Sorting Genetic Algorithm II (NSGA-II), combined with the beam dynamics code ASTRA, was employed for the multi-objective optimization of the output performance of an electron linear accelerator (linac). Taking the pre-injector of a storage ring light source as an example, the electron linac consists of a thermionic cathode high-voltage electron gun, a...
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xin xu (University of Science and Technology of China)17/05/2026, 14:00MC3.T39: Advanced techniques/Novel sources: Positron sourcesPoster Presentation
The longitudinal magnetic field profile of the Adiabatic Matching Device critically determines positron capture efficiency. While traditional designs prioritize the long adiabatic decay, this study investigates the often-overlooked non-adiabatic rise from the target exit field $B_0$, to the peak field $B_{\text{peak}}$. By systematically varying $B_0$, $B_{\text{peak}}$,, and the rise...
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Corinna Steffen (Heidelberg Ion Beam Therapy Centre)17/05/2026, 14:00MC6.D13: Instrumentation: Artificial IntelligencePoster 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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yutong huang (Tsinghua University)17/05/2026, 14:00MC2.T25: Photon sources: LasersPoster Presentation
Optical Enhancement Cavity (OEC) represents a critical technology to overcoming the average power limitations in laser technology. However, as the average power in the cavity increasing, unstabilizing factors including system noise and thermal effects come out. this study shows the diffculties ocurred in high-power OEC expeiriment and provides technical supports for the design and...
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Stefano Farina (Sapienza University of Rome)17/05/2026, 14:00MC3.T02: Advanced techniques/Novel sources: Electron SourcesPoster Presentation
Electron LINACs are key tools for radiotherapy. Conventional low-energy ones can treat only superficial tumors. Achieving Very High Energy Electrons (VHEE, >100 MeV) enables treatment of deep-seated tumors. Furthermore, electrons are well-suited for delivering Ultra-High Dose Rates (UHDR) required for FLASH therapy, which improves healthy-tissue sparing. Combining VHEE and FLASH in a hospital...
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Junha Kim (Pohang Accelerator Laboratory, Ulsan National Institute of Science and Technology)17/05/2026, 14:00MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsPoster Presentation
Recent upgrades of synchrotron light sources aim to achieve ultralow emittances, requiring strong magnet strengths that inevitably lead to severe nonlinear effects. Consequently, securing a sufficient Touschek lifetime has become a critical challenge for storage rings, including the Korea-4GSR. In this study, we performed systematic scans of tune and chromaticity to identify optimal working...
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Enchen Wu (University of Science and Technology of China)17/05/2026, 14:00MC7.T17: Technology: Alignment and SurveyPoster Presentation
With the advancement of large-scale scientific projects, engineering control networks face higher demands. This study focuses on particle accelerator tunnel control networks, addressing key challenges in automated design, data fusion, and deformation prediction. Three main contributions are presented:(1) Automated simulation of laser tracker networks using Spatial Analyzer's Measurement Plans,...
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MingDong Ma (University of Science and Technology of China)17/05/2026, 14:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Abstract: The longitudinal density distribution of electron bunches 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 developed a Time-Correlated Single Photon Counting (TCSPC) measurement system based on a general-purpose...
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Christian Goffing (European Organization for Nuclear Research)17/05/2026, 14:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
The Future electron-positron Circular Collider (FCC-ee) is a proposed lepton collider for high-energy particle physics succeeding the High-Luminosity Large Hadron Collider (HL-LHC). Its ambitious design goals demand excellent orbit and optics control and, therefore, set strict limits on alignment tolerances. Beam-based alignment (BBA) is used to relax the mechanical alignment tolerances by...
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Fatimah Alharthi (University of Manchester)17/05/2026, 14:00Poster 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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Laura Pedraza (Instituto de Fรญsica Corpuscular)17/05/2026, 14:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
In the framework of developing a high-resolution cavity beam position monitor (cBPM) and data acquisition (DAQ) system for future linear colliders, a re-entrant cBPM designed at CEA Saclay was tested at the end of the LINAC at the Accelerator Test Facility (ATF), KEK. Position and reference signals are extracted from a single broadband cavity BPM and processed through an identical front-end...
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Felipe Donoso (Karlsruhe Institute of Technology)17/05/2026, 14:00MC5.D11: Code Developments and Simulation TechniquesPoster Presentation
This study presents the first experimental application of longitudinal phase space tomography constrained by the VlasovโFokkerโPlanck 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 systemโs impulse response with the charge density profile at the time of...
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Margarita Bulgacheva (Technical University of Darmstadt)17/05/2026, 14:00MC2.T02: Photon sources: Electron SourcesPoster Presentation
Nanostructured cathodes provide local electric field enhancement in the ultraviolet regime, which increases photon absorptance and the resulting photocurrent density. We present a photoemission and beam dynamics study of a nanostructured copper photocathode for electron gun applications. Electromagnetic simulations are used to determine the spatial distribution of the photocurrent density on...
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Alexander Klemps (Hamburg University of Technology)17/05/2026, 14:00MC6.D13: Instrumentation: Artificial IntelligencePoster 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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Zhongtian Liu (Chinese Academy of Sciences)17/05/2026, 14:00MC7.T06: Normal Conducting RFPoster Presentation
High-brightness, ultra-low emittance electron beams are critical for X-ray free-electron lasers (XFELs), ultrafast electron diffraction (UED), and microscopy (UEM). Recent advances in cryogenic RF copper structures have achieved higher breakdown thresholds, enabling increased accelerating gradients and improved beam quality.
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We present the design of a compact, fully cryogenic test platform... -
Mathias Barant (Commissariat ร l'รnergie Atomique et aux รnergies Alternatives)17/05/2026, 14:00MC3.T01: Advanced techniques/Novel sources: Proton and Ion SourcesPoster Presentation
We present the ALISES 3 single-charged ECR ion source developed at the CEA. This source can produce high-intensity proton/deuton beams. Using commercial simulation tools, we model the key physical parameters such as the RF, magnetic, and electrostatic fields, as well as particle dynamics. These simulations describe particle behaviour and interaction. Thus, we will be able to have a complete...
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Tobia Romano (Politecnico di Milano, Riga Technical University)17/05/2026, 14:00MC7.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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Zeyuan Meng (University of Science and Technology of China)17/05/2026, 14:00MC5.D04: Beam Coupling Impedance Theory, Simulations, Measurements, Code DevelopmentPoster Presentation
Collimators are significant impedance sources in ring colliders, which will excite prominent wakefields, especially transverse dipolar wakefields, which are mainly responsible for the transverse mode coupling instabilities(TMCI).In this work, we calculate the longitudinal and transverse wakefields of the STCF collimators with preliminary geometric models mainly using ECHO3D.The CST particle...
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XiongHao Yuan (Shanghai Institute of Applied Physics, Chinese Academy of Sciences)17/05/2026, 14:00MC7.T07: Superconducting RFPoster Presentation
Conventional electron guns face limitations in achieving the required accelerating gradients while maintaining satisfactory beam quality for our application. To overcome this challenge, we have developed a superconducting radiofrequency (SRF) electron gun. This gun is specifically designed and operated at a high cathode gradient of 30 MV/m. We present a comprehensive evaluation of its key...
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Yanxu Wang (University of Chinese Academy of Sciences)17/05/2026, 14:00MC5.D10: Beam-Beam Effects Theory, Simulations, Measurements, Code DevelopmentsPoster Presentation
The storage ringโbased coherent light source (SRCLS) operates under extreme conditions: ultraโlow 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, intraโbeam scattering, resistiveโwall impedance, and ion...
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Weiwen Chen (Institute of High Energy Physics, Chinese Academy of Sciences)17/05/2026, 14:00MC6.T05: Beam Feedback SystemsPoster Presentation
The Rapid Cycling Synchrotron (RCS) of the China Spallation Neutron Source (CSNS) is planned to upgrade its beam power from the current 100 kW to 500 kW in the CSNS-II phase. However, significant beam-intensity-dependent transverse instability has already been observed during routine 100 kW operation. As the beam power increases further, this instability is expected to become much stronger. To...
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Mr Yuta Kikuchi (Saitama University)17/05/2026, 14:00MC5.D12: Electron Cloud and Trapped Ion EffectsPoster Presentation
The SCRIT electron scattering facility at RIKEN RI Beam Factory is a unique facility dedicated to electron scattering off unstable nuclei. The SCRIT (Self-Confining Radioactive isotope Ion Target) method utilizes the phenomenon of ion trapping within an electron storage ring. This innovative technique forms a target by replacing the residual gas in the ring with incident radioactive isotope...
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Haiyan Yao (University of Science and Technology of China)17/05/2026, 14:00MC5.D04: Beam Coupling Impedance Theory, Simulations, Measurements, Code DevelopmentPoster Presentation
Characterization of trapped-mode parameters in complex components typically requires substantial computational resources. Accurate acquisition of these parameters is crucial for elucidating component impedance characteristics and suppressing beam instabilities. To address this challenge, this paper proposes a parameter extraction method based on the particle swarm optimization algorithm๏ผPSO),...
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Saif Khan (Synchrotron soleil)17/05/2026, 14:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
The pulsed wire method is widely used for undulator characterization in Free Electron Laser (FEL) facilities, where accurate magnetic field mapping is essential for optimal beam trajectory and radiation output. In this study, we experimentally investigate the effect of wire length on pulse propagation in a 500-micron copper (25 swg) wire configuration. By systematically varying the wire...
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Aaron Gobeyn (Technical University of Darmstadt)17/05/2026, 14:00MC7.T07: Superconducting RFPoster Presentation
Bulk niobium (Nb) is the standard material for superconducting radiofrequency (SRF) cavities, due to its high critical temperature and high critical magnetic field among pure metals. The performance of these cavities has, in recent years, approached their theoretical limits [1]. The superconductor-insulator-superconductor (SIS) multilayer approach offers
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an alternative by using a thin... -
Aakash Sahai (University of Colorado Denver), Mr Kalyan Tirumalasetty (University of Colorado Denver)17/05/2026, 14:00MC3.A16: Advanced techniques/Novel sources: Advanced ConceptsPoster Presentation
Extreme plasmons* that are nonperturbative excitations of quantum electron gas inherent in conductive, nanofabricated materials, open unprecedented PetaVolts per meter fields. PV/m fields enable concepts such as a collider on a chip, nano-wiggler based gamma-ray lasers, opening the vacuum using high-field polarizability etc.
This technique that relies on emergent properties of the...
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Julian Melbinger (TU Wien, CIVIDEC Instrumentation (Austria))17/05/2026, 14:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Diamond detectors are widely used in harsh radiation environments due to their intrinsic radiation hardness. At high particle fluxes, single-particle measurements in counting mode are challenging because of pile-up, requiring a transition to current measurement. In this study, a 500 MBq $^{90}$Sr beta source was used to investigate the limitations of the counting mode and the transition to...
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Logan Knudson (University of California, Davis)17/05/2026, 14:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The UC Davis Crocker Nuclear Laboratory (CNL) operates a 76-inch isochronous cyclotron dating to the 1960s, with limited internal beam diagnostic instrumentation. Direct measurements of the Cyclotron beam are challenging due to the harsh environment, including high radiation, strong magnetic fields, RF interference, and spatial constraints. A novel beam probe has been developed for...
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Sergei Sherstiuk (Technical University of Darmstadt)17/05/2026, 14:00MC5.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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Yixuan Luo (Tsinghua University)17/05/2026, 14:00Poster 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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Yixuan Luo (Tsinghua University)17/05/2026, 14:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
Accurate acquisition of the longitudinal phase space distribution is crucial for synchrotron optimization, but traditional tomography requires minutes per reconstruction, preventing real-time diagnostics. To resolve this, we propose a novel spatio-temporal neural network integrating 1D Convolutional Neural Networks (CNN) and Transformers. This hybrid model achieves end-to-end continuous...
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Xuanying Song (Tsinghua University)17/05/2026, 14:00MC2.T26: Photon sources: Photon Beam Lines and ComponentsPoster Presentation
Wave-optical simulation of undulator radiation through X-ray beamlines is computationally prohibitive, limiting real-time optimization. The high-frequency diffraction structures and extreme dynamic range of focal spot distributions pose significant challenges to conventional surrogate models. We propose a log-manifold surrogate modeling framework that represents intensity distributions in...
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Xianghe Fang (Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati)17/05/2026, 14:00MC7.T24: Technology: Timing and SynchronizationPoster Presentation
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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YuanYuan Qin (Tsinghua University)17/05/2026, 14:00MC3.T02: Advanced techniques/Novel sources: Electron SourcesPoster Presentation
High-quality electron beams are critical for imaging experiments that provide detailed microscopic structural insights into materials. The very-high-frequency (VHF) electron gun, capable of operating in continuous and pulsed modes, is a preferable option. In this paper, we employ a cold field emission cathode as the emitter in the VHF gun and measure the beam size, transverse emittance, and...
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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 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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Ryota Matsushita (The University of Tokyo)17/05/2026, 14:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The three-dimensional spiral injection scheme enables beam storage in ultra-compact storage rings where few-nanosecond revolution periods make single-turn kicker injection impractical. We demonstrate this concept by storing a 297 keV/c electron beam in a 22 cm-diameter weak-focusing solenoidal ring with a 5 ns revolution period. We applied a kicker-current pulse with a 45 A peak and a 140 ns...
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Zexin Cao (University of Science and Technology of China)17/05/2026, 14:00MC7.T06: Normal Conducting RFPoster Presentation
This paper presents the design of a compact X-band two-stage pulse compression system featuring bowl-shaped open cavities, developed for a newly acquired 6-MW X-band klystron. The system consists of a correction cavity chain, a first-stage and a second-stage storage cavity. By employing bowl-shaped geometries, which have an unloaded quality factor ($Q_0$) higher than those of spherical...
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YUXIN CHENG (Shanghai Institute of Applied Physics, Chinese Academy of Sciences)17/05/2026, 14:00MC2.A29: Ultrafast electron diffraction and ultrafast electron microscopyPoster Presentation
Attosecond-level ultrafast electron diffraction (UED) experiments in the MeV regime increasingly rely on electron guns that act not only as injectors but also as well-defined longitudinal dispersive optical elements. Building on the concept of multi-dimensional phase-space manipulation, we investigate a class of โdispersion-engineeredโ RF electron guns whose internal dynamics are tailored such...
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Yoshihiro Saito (The Graduate University for Advanced Studies, SOKENDAI)17/05/2026, 14:00MC4.A04: Hadron accelerators: Circular AcceleratorsPoster Presentation
At the J-PARC Main Ring synchrotron, a project is currently underway to upgrade the beam power to 1.3 MW for the neutrino oscillation experiment. Precise control of the optics and beam orbit relative to the magnetic center of the accelerator components is crucial to suppress and localize beam losses in intense beams. To satisfy the target, ongoing upgrades of the data acquisition system for...
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Matthew Signorelli (Cornell University (CLASSE))17/05/2026, 14:00MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsPoster Presentation
We present SciBmad, a new and comprehensive accelerator physics software library developed to meet the needs of all accelerator design, analysis, and virtualization. SciBmad, which consists of a set of modular packages, features fully differentiable and CPU/GPU-parallelized symplectic integrators, spin tracking and radiation, advanced (and differentiable) lattice definitions, nonlinear normal...
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Weibo Hu (University of Science and Technology of China)17/05/2026, 14:00MC7.T34: Permanent MagnetsPoster Presentation
We present a septum magnet based on permanent magnet (PM) for HEFEI ADVANCED LIGHT FACILITY (HALF). Permanent magnet are expected to save more energy and take up less space.
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Xinru Gao (University of Science and Technology of China)17/05/2026, 14:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
This work presents a comprehensive simulation study aimed at validating key optical models for Xโray pinhole cameras and Fresnel zoneโplate (FZP) imaging lines designed for the Hefei Advanced Light Faclilty (HALF). Accurate transverse beam diagnostics are essential for beamline performance, and simplified approximationsโsuch as the squareโaperture pinhole model, Gaussian pointโspread function...
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Jan Wirtz (GSI Helmholtz Centre for Heavy Ion Research, Technical University of Darmstadt)17/05/2026, 14:00MC4.A20: Hadron accelerators: Radioactive IonsPoster Presentation
Starting in 2027, the Super-FRS will produce and separate rare isotopes for nuclear physics experiments at the Facility for Antiproton and Ion Research (FAIR). To reach isotopes further toward the nuclear drip line, the separator uses heavy-ion beams of higher energy (>1.5 GeV/u) and intensity (>3*10^11 238U/s) compared to previous facilities. These primary beams, as well as the secondary...
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Evan Ericson (Paul Scherrer Institute)17/05/2026, 14:00MC3.A16: Advanced techniques/Novel sources: Advanced ConceptsPoster Presentation
SwissFEL has two 1 m-long planar dielectric wakefield structures used for dechirping electrons in its hard X-ray beamline, Aramis. Simulations show the structures also support wakefields that can be used to accelerate following particle beams. Here we introduce the dielectric wakefield structures and ECHO2D simulations that show the longitudinal wake potential dependence on structure gap and...
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JUBA TAMAZIRT (Centre National de la Recherche Scientifique)17/05/2026, 14:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
This work focuses on the energy calibration of the FCC-ee and aims to develop precise techniques for ensuring accurate beam energy measurements, essential for improving the precision of electroweak parameter determinations. To do so, resonant depolarisation technique will be employed, requiring the continuous operation of a depolariser and Compton polarimeters for both electrons and positrons...
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Pascal Reinhart (Technical University of Darmstadt)17/05/2026, 14:00MC5.D04: Beam Coupling Impedance Theory, Simulations, Measurements, Code DevelopmentPoster Presentation
In accelerators, collimators are used to shape the beam
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and protect the machine against damage. They have however
an adverse effect on the beam quality. We present a
trapped-mode analysis of the new collimators for PETRA IV
and their impact on beam dynamics. Wakefield and eigenmode
simulations are used to determine the beam-coupling
impedance of the collimators. From that, the quality... -
Aoyu Wang (Institute of High Energy Physics, Chinese Academy of Sciences, University of Chinese Academy of Sciences)17/05/2026, 14:00MC2.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)17/05/2026, 14:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
Hefei infrared Free Electron Laser (HiFEL) facility aims to provide high-quality lasers with wavelengths covering the mid to far infrared range. However, there is an obvious decrease in the output power at long wavelengths. The mode field mismatch and truncation loss at the waveguide to free space region are the main reasons for low output power. We propose a full waveguide design and...
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Tianlong He (University of Science and Technology of China)17/05/2026, 14:00MC5.D05: Coherent and Incoherent Instabilities Theory, Simulations, Code DevelopmentPoster Presentation
In high-current electron storage rings, tuning the radio-frequency (RF) cavityโs proportional-integral (PI) controller is crucial for beam stability. Traditional online trial-and-error methods risk beam loss due to improper parameter settings. This paper proposes a pre-commissioning method based on particle-tracking simulations that self-consistently model the coupled beam-cavity-feedback...
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Dr Alan Marcia (Fondazione Bruno Kessler, University of Trento)17/05/2026, 14:00MC3.A15: Advanced techniques/Novel sources: New Acceleration Concepts and TechniquesPoster Presentation
The miniaturization of particle accelerators via Dielectric Laser Acceleration (DLA)* offers a route to ultra-compact, cost-effective devices powered by commercial laser systems. This work explores the extension of DLA technologyโhistorically focused on electronsโto protons, aiming to enable "on-chip" sources of high energy hadrons. We present the design and simulation of a novel...
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Mr Aras Amini (University of Manchester, Cockcroft Institute)17/05/2026, 14:00MC3.A16: Advanced techniques/Novel sources: Advanced ConceptsPoster Presentation
There is a growing demand for generating and transporting very short femtosecond-scale, high-charge-density relativistic electron bunches [1-2]*. Applications range from extreme light sources such as free-electron lasers to future linear colliders. Laser-plasma wakefield accelerators (LWFA) [3] offer a promising approach for compact high-gradient acceleration, but electrons generated directly...
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Johan Ribbing (Uppsala University)17/05/2026, 14:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
Modern free electron laser facilities can now produce x-ray pulses as short as hundreds of attoseconds. Optimal utilization of these short pulses for ultra-fast science requires the accurate characterization of the pulse durations which there are promising methods to achieve. However, these are still developing experimental techniques, far from being routine procedure. In the meantime, the...
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Joyce Samantha Romero Jimรฉnez (University of the Basque Country)17/05/2026, 14:00MC7.T07: Superconducting RFPoster Presentation
Sustainability is a key issue for both current and future particle accelerators. Superconducting RF cavities with high loaded quality factors play an important role in not only lowering the energy demands of particle accelerators but also the initial investment in RF amplifiers. But the narrow bandwidth associated with this high loaded quality, makes the need to minimize cavity detuning...
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Markus Engart (Technical University of Darmstadt)17/05/2026, 14:00MC2.T02: Photon sources: Electron SourcesPoster Presentation
Photocathodes based on the III-V seminconductor GaAs are used as photo-electron sources to supply spin-polarized electron beams for accelerator applications. In order to achieve a sufficient electron yield, a thin surface layer of cesium combined with an oxidant is applied onto the cathode surface in a process called the cathode activation. It is typically done manually by an experienced...
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Shota Nishi (The Graduate University for Advanced Studies, SOKENDAI)17/05/2026, 14:00MC7.T10: Superconducting MagnetsPoster Presentation
KEK Photon Factory is developing a Nb_3 Sn superconducting multipole wiggler (SC-MPW) for a next generation light source ring. The test coil unit has three round Nb_3 Sn coils and works as a three-pole wiggler. Nb_3 Sn superconductivity is strain sensitive, and training of resin impregnated Nb_3 Sn magnets could be limited by wire motion or cracks of the resin. Thus, it is important to monitor...
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Elene Kravishvili (Universitรฉ Paris-Saclay)17/05/2026, 14:00MC6.T05: Beam Feedback SystemsPoster Presentation
In upgrading the present SOLEIL ring, it has been decided to introduce longitudinal bunch-by-bunch feedback (LFB) in addition to the already existing transverse feedback (TFB), since it was evaluated that the new normal conducting fundamental RF cavities will have a non-zero risk of exciting longitudinal coupled-bunch instabilities due to their higher-order-modes (HOMs). SOLEIL II also plans...
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Ingrid Mases (European Organization for Nuclear Research)17/05/2026, 14:00MC4.A17: Hadron accelerators: High Intensity AcceleratorsPoster Presentation
Transverse emittance growth was observed during the long injection plateau for high-intensity multi-bunch LHC-type beams in the CERN SPS, showing a clear dependence on the working point. Transverse tunes were increased to reduce emittance growth driven by integer resonances; however, a residual increase in emittance persists. To characterize this behavior and investigate its possible causes,...
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Emily Howling (John Adams Institute)17/05/2026, 14:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
The electron-positron Future Circular Collider (FCC-ee) has challenging requirements for beam instrumentation, including the need for thousands of high-resolution beam position monitors (BPMs) presenting low impedance to the circulating beam. This paper presents studies of different unusual pickup geometries including elliptical, asymmetric and retracted buttons. The impact of the different...
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Cheng-Hsu Nee (University of WisconsinโMadison)17/05/2026, 14:00MC1.A09: Muon Accelerators, Neutrino Factories, Muon CollidersPoster Presentation
We present optimization studies for a site-specific muon production and transport demonstrator for the Muon Collider planned at Fermilab. The design considers proton beams at 0.8, 8, and 120 GeV available from Fermilab accelerator facilities. The optimization work focuses on the performance of the target system and captures solenoid, a dedicated pion decay channel, a momentum selection...
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Shoaib Akbar (Sapienza University of Rome)17/05/2026, 14:00MC3.T02: Advanced techniques/Novel sources: Electron SourcesPoster Presentation
A 24-MeV prototype LINAC is under development at Sapienza University of Rome for FLASH radiobiological studies. The injector is a 12-keV triode thermionic electron gun from HeatWave Labs, providing grid-controlled current modulation for high current, low perveance, and short-pulse operation. To optimize its integration with the 24 MeV C-band hybrid standing and travelling wave structure,...
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Shamil Lachynov (Budker Institute of Nuclear Physics)17/05/2026, 14:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
Many applications of accelerator technology require electron bunches with length of up to 1 ps, the peak current exceeding 1 kA and the normalized emittance being less than 100 mmยทmrad. To produce such bunches, special electron-optical systems ensuring beam bunching, known as magnetic bunchers, are widely used. Designing a 540ยฐ magnetic buncher has started several years ago at BINP [1]. Such a...
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Jihong Bian (Tsinghua University)17/05/2026, 14:00MC5.D05: Coherent and Incoherent Instabilities Theory, Simulations, Code DevelopmentPoster Presentation
In a storage ring with an extremely small global phase slippage, the bunch length can vary significantly within one turn due to the local 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 arising from the local phase slippage on the coherent synchrotron...
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EDGAR JAIR VILLASENOR GONZALEZ (Universidad Autรณnoma de Sinaloa)17/05/2026, 14:00MC5.D12: Electron Cloud and Trapped Ion EffectsPoster Presentation
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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Zhengkai Wang (Tsinghua University)17/05/2026, 14:00MC2.T12: Photon sources: Beam Injection/Extraction and TransportPoster Presentation
Steady-State Microbunching(SSMB) light source is a highly potential new type of light source, which combines the advantages of synchrotron radiation and FEL. It possesses the characteristic of both high repeat frequency and high peak power, which means that we need to generate electron beams with high repeat frequency and high brightness. In fact, in the Accelerator Lab of Tsinghua University,...
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YiQun Shi (Institute of High Energy Physics)17/05/2026, 14:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationPoster Presentation
Laser plasma accelerators (LPA) are expected to achieve acceleration gradients several orders of magnitude higher than conventional accelerators, thereby providing a promising route to the development of compact high-energy particle accelerators. However, the electron beams generated by current LPAs exhibit considerable energy spread and significant shot-to-shot energy jitterโissues that are...
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NanRui Yang (University of Science and Technology of China)17/05/2026, 14:00MC2.T15: Photon sources: Undulators and WigglersPoster Presentation
The fast polarization switching of undulator radiation has attracted more and more attention in recent years. Recently, a new method has been proposed for fast polarization switching up to kilohertz of undulator radiation by using magnetic field modulation generated from low-current electromagnetic coils. Through fast switching the power of coils, the radiation spectra of two undulators can be...
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Tao Guo (University of Science and Technology of China)17/05/2026, 14:00MC7.T14: Vacuum TechnologyPoster Presentation
Non-evaporable getter (NEG) thin films are essential for achieving ultra-high vacuum in the narrow-bore chambers. Pd/Ti bilayer NEG thin films were deposited on oxygen-free copper and silicon substrates by DC magnetron sputtering. The microstructure and elemental distribution were characterized by scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS). The films...
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Ana Guisao-Betancur (University of Liverpool, Cockcroft Institute)17/05/2026, 14:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
Coherent transition radiation (CTR) has been widely used for developing diagnostics of particle beams due to its broadband spectrum, which provides information on the particle distribution, and its relatively simple experimental setup compared to other sources of coherent radiation. For short and ultrashort electron bunches, ps- to fs-long, methods such as CTR spectrometry and interferometry...
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Zhiyuan Wang (Tsinghua University)17/05/2026, 14:00MC5.D09: Emittance manipulation, Bunch Compression and CoolingPoster Presentation
High-brightness, ultrashort electron beams from photocathode DC guns are increasingly demanded for applications such as UED/UEM, THz acceleration, and dielectric laser acceleration (DLA). We present the concept and design of a static magnetic scheme for 200 keV electron beams from a photocathode DC gun that control the bunch duration and laser-electron synchronization simultaneously to sub-40...
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Ms Mahazbeen Sayed (Rajiv Gandhi Technical University)17/05/2026, 14:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
Abstract: A SCILAB Xcos model has been redesigned using Super Blocks to simulate electron trajectories in different undulator schemes. The use of Super Blocks simplifies the model structure, reduces configuration complexity, and enhances modularity for further extension. This improvement allows easy modification of parameters and undulator configurations without rebuilding the complete model....
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2925. SuperKEKB BT Tracking and DA Comparison as an approximation for injection efficiency (SUP1007)Nikita van Gils (European Organization for Nuclear Research)17/05/2026, 14:00MC1.A02: Lepton Circular CollidersPoster Presentation
A new Energy Compression System (ECS), consisting of four consecutive 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 and often slow.
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To accelerate this process, we compare the beam tracked through BTe โ including the ECS โ to the... -
Karel Peetermans (Deutsches Elektronen-Synchrotron DESY)17/05/2026, 14:00MC2.A25: THz sourcesPoster Presentation
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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Gabriel Ascenรงรฃo (Brazilian Synchrotron Light Laboratory)17/05/2026, 14:00MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code DevelopmentsPoster Presentation
This paper presents the development of a symplectic integrator for particle tracking in insertion devices at SIRIUS. The method relies on analytical field representations specifically tailored to model the magnetic structure of the device accurately. Tracking results obtained with the new integrator are compared with those from traditional kickmaps, and the differences observed in dynamical...
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Joseph Devlin (Cornell University (CLASSE))17/05/2026, 14:00MC1.A30: Colliders: Polarized beamsPoster Presentation
Acceleration of polarized hadron beams to high energy requires the use of Siberian snakes. In most long-term tracking simulations, Siberian snakes are represented by an instantaneous spin rotation with no orbital effect. This captures the primary effect on the spin motion, but it is not a realistic representation of the helical-dipole magnets which serve as Siberian snakes in BNLโs AGS and...
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Zahid Mamud (The Assam Royal Global University)17/05/2026, 14:00MC8.U02: Materials Analysis and ModificationPoster Presentation
The global transition to sustainable energy demands validation of unconventional lithium reservoirs, particularly pyrite (FeSโ) 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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xiao qu (University of Science and Technology of China)17/05/2026, 14:00MC6.T04: Accelerator/Storage Ring Control SystemsPoster Presentation
Maintaining a constant phase difference between the reference (Ref) and cavity voltage sampling (Pt) signals is critical for stable operation of the Hefei Light Source (HLS) storage ring's RF system. This requires high-precision real-time phase detection capable of identifying lead or lag, to quickly restore the preset phase after startup or recovery, and to maintain the relationship between...
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Ms Lisa Beate Dingeldein (Technical University of Darmstadt)17/05/2026, 14:00MC2.A26: Photon sources: Compton sourcesPoster Presentation
The COBRA source (Compton Backscattering at a Recirculating Accelerator) utilizes a 100 W Yb:YAG laser that is synchronized with the electron beam of the superconducting Darmstadt linear accelerator S-DALINAC * for head-on collisions. The backscattered photons in the X-ray energy range can be collimated into a quasi-monochromatic beam for electron beam diagnostics and as a technology...
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Binghao Zhang (University of Science and Technology of China)17/05/2026, 14:00MC2.T15: Photon sources: Undulators and WigglersPoster Presentation
The APPLE-KNOT undulator forms composite magnetic fields by superimposing APPLE and KNOT fields with different period lengths. In this configuration, in which the APPLE field serves as the dominant component to approximate the target photon energy, while the KNOT field acts as an additional component to transversely deflect the electron beam off-axis. Although variable polarization modes can...
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Zdenek Vostrel (European Organization for Nuclear Research)17/05/2026, 14:00MC2.T02: Photon sources: Electron SourcesPoster Presentation
The current baseline for the FCC-ee electron source is an RF-gun, which was selected to meet the strict emittance requirement < 4 mm mrad normalized transverse emittance. The recent incorporation of an electron damping ring into the injector complex relaxes this requirement, allowing the potential use of a simpler and more reliable thermionic gun. This study explores and compares these two...
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Zihan Wang (University of Science and Technology of China)17/05/2026, 14:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
Seeded free-electron lasers (FELs) are advanced, accelerator-based light sources characterized by high coherence and stability. In previous research, we proposed an intelligent optimization framework for studying seeded FELs. Using this framework for exploratory optimization, we identified a novel seeded FEL scheme. This scheme employs an optical layout identical to echo-enabled harmonic...
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Zihang Zhao (Institute of High Energy Physics)17/05/2026, 14:00MC5.D07: High Intensity Circular Machines Space Charge, HalosPoster Presentation
Recently, several special electron rings have been proposed featuring beam energies of a few hundred MeV, nanometer-scale bunch lengths, and micrometer-scale bunch spacings. Due to their relatively low energy and high beam current, space-charge effects may become significant. In this work, we evaluate both the space-charge tune shift and the longitudinal envelope equation with space-charge...
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Maximilian Lenz (Particle Beam Physics Lab (PBPL))17/05/2026, 14:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
We present recent progress on a terahertz streaking diagnostic for ultrashort relativistic electron bunches at the UCLA Pegasus Laboratory. Single-cycle, ~50โฏยตJ THz pulses centered at 0.4โฏTHz are coupled into metallic structures to enhance field strengths to several hundred MV/m and shape the boundary conditions for a strong longitudinal streaking gradient. A long initial bunch emitted from...
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Jack Phillips (Particle Beam Physics Lab (PBPL))17/05/2026, 14:00MC2.A25: THz sourcesPoster Presentation
Dielectric wakefield acceleration, driven by electron beams, generates high-power, narrowband terahertz radiation via the coherent Cherenkov emission. While conventional dielectric-lined waveguides have been studied extensively for fundamental mode excitation, recent theory suggests higher-order modes carrying orbital angular momentum (OAM) can be deliberately excited in modified structures....
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Fatima Basbous (GIP ARRONAX, Nantes Universitรฉ)17/05/2026, 14:00MC6.D13: Instrumentation: Artificial IntelligencePoster Presentation
In the context of the operational monitoring of the ARRONAX C70XP cyclotron, our previous work addressed the limitations of the Isolation Forest (IF) algorithm in detecting local anomalies, particularly those occurring near the mean of normal data, due to its reliance on axis-parallel splits. To overcome this issue, we developed and validated a hybrid model combining an autoencoder and IF,...
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Laury Batista (Commissariat ร l'รnergie Atomique et aux รnergies Alternatives)17/05/2026, 14:00MC3.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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Maria รnal (SOLARIS National Synchrotron Radiation Centre)17/05/2026, 14:00MC6.T05: Beam Feedback SystemsPoster Presentation
Precise control of betatron tune is essential for maintaining beam stability in modern synchrotron light sources. At the SOLARIS storage ring, tune perturbations induced by undulator gap and phase present a significant operational challenge. This study presents a method for local tune compensation during the gap and phase motion of Apple II type undulator, installed upstream of a dedicated...
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Nicole Verboncoeur (Cornell University (CLASSE))17/05/2026, 14:00MC7.T07: Superconducting RFPoster Presentation
Exploration of new recipes and novel materials for superconducting RF cavities is necessary to push to higher quality factors and accelerating gradients. The superheating field is the material property that sets the limit on the maximum accelerating gradient achievable for a superconducting cavity of a given geometry. The Cornell SuperHeating Radiofrequency Pulsed Power Probe (C-SHRP^3) is a...
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Joshua Gray (European Organization for Nuclear Research)17/05/2026, 14:00MC5.D01: Beam Optics Lattices, Correction Schemes, TransportPoster Presentation
Small momentum offsets in the LHC can generate significant optics distortions, particularly at low $\beta$*. The beam energy carries a relative uncertainty of approximately $10^{-3}$, which is insufficient for precise optics control. To better understand the impact of energy on the optics, two beam-based techniques have been explored. The first applies a global linear response matrix between...
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Katrina Howard (University of Chicago)17/05/2026, 14:00MC7.T07: Superconducting RFPoster Presentation
The SRF community has shown that high temperature annealing can improve the flux expulsion of niobium cavities during cooldown. The required temperature will vary between cavities and different batches of material, typically around 800 C and up to 1000 C. However, for niobium with a low residual resistance ratio (RRR), even 1000 C is not enough to improve its poor flux expulsion. The purpose...
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Zhuoyuan Liu (Tsinghua University)17/05/2026, 14:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
We present brief analysis of physics in superradiant THz free electron lasers(FEL) driven by electron microbunch trains. It is found that the saturated pulse energy increases drastically with increasing initial bunching factor due to a more efficient interaction between radiation and electron beam compared to SASE FELs. Furthermore, we analyze the effect of short bunch length and undulator...
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Quentin Bruant (Commissariat ร l'รnergie Atomique et aux รnergies Alternatives)17/05/2026, 14:00MC1.A02: Lepton Circular CollidersPoster Presentation
In order to consistently operate collider at peak luminosity, one have to know in detail the full magnetic lattice of the colliding rings, and to know in particular the deviation of the real lattice from the model used in the design phase.
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Turn-by-turn BPMs surveys are one of the method available to measure this deviation. Based on the n-BPM method developped at CERN, the spectral response of... -
Gabriel Soto (University of California, Davis)17/05/2026, 14:00MC6.T04: Accelerator/Storage Ring Control SystemsPoster Presentation
Crocker Nuclear Laboratory has been going through a modernization in its control system. One of the projects being made for the modernization is using machine learning to model the isochronous cyclotron environment & to use that model for autonomous control. The model uses convoluted neural networks, and uses 32 controlled parameters that all affect the beam current and stability. This model...
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Seyed Amirhossein Mousavi (Institute for Research in Fundamental Sciences)17/05/2026, 14:00MC6.T03: Beam Diagnostics and InstrumentationPoster Presentation
In this work, we introduce a refined bead-pull measurement technique for the precise characterization of radiofrequency (RF) fields in accelerator cavities. Central motivation arises from the unavoidable manufacturing imperfections in real-world devices, which cause deviations from simulated field maps and thus necessitate direct, high-fidelity measurement. To address this, we propose the use...
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Helena Jaworska (Heinrich Heine University Dรผsseldorf)17/05/2026, 14:00MC3.A22: Advanced techniques/Novel sources: Plasma Wakefield AccelerationPoster 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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Bao Nguyen (Realta Fusion, Imperial College London)17/05/2026, 14:00MC3.T01: Advanced techniques/Novel sources: Proton and Ion SourcesPoster Presentation
The DOE INFUSE collaboration between Realta Fusion [1] and Lawrence Berkeley National Laboratory 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 [2]. In this work, we implement and validate the plasma meniscus...
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Euan Smith (University of Manchester, Cockcroft Institute)17/05/2026, 14:00MC7.T06: Normal Conducting RFPoster Presentation
Very high energy electrons (VHEE) are a potential future modality in the field of radiotherapy. They have garnered considerable interest because they possess a unique combination of several properties including: being capable of deep tissue penetration (>30 cm), relative insensitivity to tissue inhomogeneities and being well suited to FLASH therapy. FLASH is the use of ultra-high dose rates...
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Lanpeng Ni (Shanghai Institute of Applied Physics)17/05/2026, 14:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
Optical frequency comb (OFC) technology provides precise measurement tools for optical frequencies, leading to revolutionary changes in the field of optics.OFCs consist of a series of uniformly spaced spectral lines resembling the teeth of a comb, and they have found widespread applications in timing, precision spectroscopy, and fundamental physics.Extending this technology into the EUV to...
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jinke Xiong (Shanghai Institute of Applied Physics, Chinese Academy of Sciences)17/05/2026, 14:00MC2.A06: Free Electron Lasers (FELs)Poster Presentation
The ultrashort pulse concept, known as "measurement-before-destruction," pioneers ultrafast probing of sensitive states by allowing signal capture before significant laser-induced changes occur. While Free-Electron Lasers (FELs) drive progress in attosecond X-ray generation for electron dynamics, the next frontierโtime-resolved nuclear dynamicsโdemands sub-attosecond to zeptosecond pulses at...
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