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Hayk Sargsyan (Center for the Advancement of Natural Discoveries using Light Emission)16/08/2026, 16:00MC1.A01: Beam Dynamics, beam simulations, beam transportPoster Presentation
Optimization of beam transport systems in linear accelerators is a nonlinear and computationally intensive task due to the complex interdependencies between beam properties and machine parameters. In this work, a physics-motivated surrogate modeling approach is developed to optimize the processes of the best accelerator parameters exploration. The proposed framework approximates...
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Hao Hu (Huazhong University of Science and Technology)16/08/2026, 16:00MC2.A02: Electron linac projectsPoster Presentation
In the Super Tau-Charm Facility (STCF) Main Linac, intense short-range longitudinal wakefields from high-charge bunches cause severe energy spread degradation and nonlinear longitudinal phase space (LPS) distortions. We present an analytical model describing LPS evolution under RF acceleration, wakefields, and longitudinal space charge. By utilizing an equivalent truncated-Gaussian...
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479. Beam dynamics simulation and lattice optimization for the Siam Photon Source injector (SUPO006)Dr Thakonwat Chanwattana (Synchrotron Light Research Institute)16/08/2026, 16:00MC1.A01: Beam Dynamics, beam simulations, beam transportPoster Presentation
The Siam Photon Source (SPS) injector, comprising a pre-injector linac and a low-energy beam transport line (LBT), delivers a 40 MeV electron beam to a booster synchrotron for acceleration to 1.2 GeV. While this system has operated in its original configuration since commissioning, prior machine studies (in 2006 and 2016) revealed that overall beam transmission efficiency had degraded to below...
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Mikhail Vladimirov (National Research Nuclear University MEPhI)16/08/2026, 16:00MC1.A02 Electron and ion sources, guns, photo injectors, charge breedersPoster Presentation
Pico- and subpicosecond electron bunches with low transverse emittance and charges up to hundreds of picocoulombs, routinely generated in high-gradient RF photoguns, are essential for high-brightness light sources. Photoemission governs the initial bunch properties and is central to forming high-brightness beams. Classical photoemission models (Spicer and Fowler–DuBridge) do not always...
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Woohyeong Kim (Gangneung–Wonju National University)16/08/2026, 16:00MC4.A01: Beam diagnosticsPoster Presentation
Precise measurement of the 4D phase-space distribution (x, x', y, y') is essential for optimizing accelerator performance and ensuring stable operation. However, the prolonged measurement time of traditional scanning-based diagnostics limits their application in real-time tuning. In this study, we propose a deep learning-based surrogate model for the rapid reconstruction of heavy-ion beam...
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fanyu wang (Institute of High Energy Physics, Chinese Academy of Sciences)16/08/2026, 16:00MC4.A05: Other technologyPoster Presentation
The reliable operation of high-power RF components, including superconducting cavity input couplers and RF windows, is critical for superconducting radio-frequency (SRF) accelerator facilities. Prior to installation into accelerator systems, these components typically require high-power conditioning to verify their RF performance and thermal stability. However, establishing megawatt-level RF...
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Buse Naz Temizel Ozdemir (Northern Illinois University)16/08/2026, 16:00MC1.A01: Beam Dynamics, beam simulations, beam transportPoster Presentation
Emittance exchange (EEX) is an attractive approach for generating high-frequency bunch trains from transverse modulations. Ongoing efforts aim to explore the limits of longitudinal modulations achievable with EEX beamlines and methods for enhancing radiation brightness for a given beam. One project investigates the generation of nanometer-scale longitudinal modulation using a transmission...
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Mr Phani Deep Meruga (Instrumentation Technologies (Slovenia), Sapienza University of Rome)16/08/2026, 16:00MC4.A04: Low level RFPoster Presentation
Low-Level RF (LLRF) systems are essential for maintaining amplitude and phase stability in modern linear accelerators, directly affecting beam quality and operational reliability. The increasing use of X-band technology in compact, high-gradient linacs enables ultra-short RF pulses and higher accelerating fields, while also increasing sensitivity to phase noise, timing jitter, and thermal...
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Vlada Yarygova (Budker Institute of Nuclear Physics)16/08/2026, 16:00MC1.A04 Plasma and wakefield accelerationPoster Presentation
Plasma wakefield acceleration is a promising method of accelerating charged particles based on the excitation of strong electric fields in plasma. These fields arise when a driver, such as a particle beam or a laser pulse, propagates through the plasma and displaces electrons, forming a wave with accelerating gradients far exceeding those of conventional accelerators. In this work we study the...
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Osman Emre Delialioglu (The Graduate University for Advanced Studies, SOKENDAI)16/08/2026, 16:00MC4.A04: Low level RFPoster Presentation
The muon high-precision (g-2)/EDM experiment, which is planned at the J-PARC, utilizes the world’s first dedicated muon linear accelerator (linac), requiring stringent Radio-Frequency (RF) field stability. The Radio Frequency Quadrupole (RFQ), the linac's initial stage, experiences frequency shifts that cause operation outside the RFQ bandwidth. Due to budget constraints, conventional tuning...
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Paula Desire Valdor (European Organization for Nuclear Research)16/08/2026, 16:00MC2.A04: FELsPoster Presentation
Intrabeam Scattering (IBS) has recently been recognized as a limiting factor for free electron laser (FEL) performance, making it a critical concern for the linear accelerator community. There is a growing need for accurate numerical tools to compute IBS and integrate it with other collective effects, as most previous studies assumed Gaussian beams, which are not representative of FEL...
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Maleesh Shehan Rathnasiri Dissanayake Mudiyanselage (Lancaster University)16/08/2026, 16:00MC4.A08: Superconducting RFPoster Presentation
Integrating ferroelectric fast reactive tuners (FE-FRTs) into SRF cavities offers a promising route to mitigate microphonics. This work reports the design and characterisation of an FE-FRT coupled to a 1.3 GHz two-cell cavity, supported by a lumped element equivalent circuit model and 3D CST simulations. From this framework, external Q-factors, FPC specifications, and generator power...
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Liwen Liu (Institute of Modern Physics, Chinese Academy of Sciences)16/08/2026, 16:00MC4.A01: Beam diagnosticsPoster Presentation
This work extends the Maximum Entropy Tomography (MENT) framework from linear to nonlinear beam transport. This nonlinear MENT method enables high-accuracy phase space reconstruction where nonlinear effects are significant, such as for the intrinsically nonlinear longitudinal dynamics in RF hadron linacs and in front ends where elements exhibit large, overlapping fringe fields.
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Junwon Choi (Kangwon National University)16/08/2026, 16:00MC4.A05: Other technologyPoster Presentation
Next-generation storage rings require low emittance and high brilliance, and their quadrupole magnets must provide both high magnetic gradients and stringent multipole field quality. Conventional electromagnetic quadrupoles consume substantial electrical power and require cooling systems because of Joule heating. In this study, a permanent magnet quadrupole (PMQ) that generates its magnetic...
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Han Xiao (Institute of High Energy Physics)16/08/2026, 16:00MC4.A06: RF power sources and power couplersPoster Presentation
High-efficiency klystrons can significantly reduce the operational costs of particle accelerators. However, for the of low-duty-factor klystrons commonly used in linear accelerators, the power consumption of electromagnetic focusing coils remains non-negligible. This paper presents the progress of an S-band 50 MW high-efficiency klystron employing periodic permanent magnet (PPM) focusing...
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Erin Chen (Fermi National Accelerator Laboratory)16/08/2026, 16:00MC1.A01: Beam Dynamics, beam simulations, beam transportPoster Presentation
Quadrupole scans are a commonly used tool for beam second moment reconstruction. Limitations in the strength of the magnets and layout of the beamline elements frequently preclude simple quadrupole-drift-detector scans from collecting sufficient data for reconstruction. Using a normalized coordinate framework, we characterize the prerequisites for a robust simple quadrupole scan and expand...
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Riccardo Boldrini (Sapienza University of Rome)16/08/2026, 16:00MC3.A01: Industrial and medical acceleratorsPoster Presentation
FLASH radiotherapy is emerging as a transformative cancer-treatment modality, achieving tumor control while reducing normal-tissue toxicity and improving the therapeutic index. To exploit this effect, especially for deep-seated tumors, Very High-Energy Electrons (VHEE) in the 50–150 MeV range are required. Within the SAFEST project, aimed at a 100 MeV machine, Sapienza University of Rome, with...
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Jie Zeng (Institute of Modern Physics, Chinese Academy of Sciences)16/08/2026, 16:00MC1.A01: Beam Dynamics, beam simulations, beam transportPoster Presentation
High-power particle accelerator beams have important applications in many fields. Multi-terminal beam delivery can improve beam utilization, while the extremely high peak current density on the target surface limits the safe and stable operation of target stations. To meet the demand for simultaneous multi-terminal beam delivery, RF beam separation was studied. A scheme based on a RF...
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