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Zachary Liptak (Hiroshima University)17/08/2026, 16:00MC2.A06: Other electron acceleratorsPoster Presentation
Because muons possess high material penetration capabilities, they are an extremely effective tool for non-destructive testing of large-scale structures. While cosmic-ray muons have traditionally been used for imaging infrastructure such as bridges and tunnels, as well as the interiors of buildings, challenges have included long measurement times and limitations on installation locations. In...
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Ulrich Ratzinger (Bevatech GmbH)17/08/2026, 16:00MC3.A05: RFQsPoster Presentation
An improved version of the 4-rod RFQ was developed to gain higher mechanical precision on the rod - alignment, and to reach a higher quality factor. Design elements as developed during a prototyping project within the Hessian funding initiative LOEWE3 were implemented in this project for the first time. This resulted in substantially reinforced rod-supports with complete dipole...
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Pablo Martinez Reviriego (European Organization for Nuclear Research)17/08/2026, 16:00MC4.A07: Room temperature RFPoster Presentation
Pulsed high-power Radio Frequency (RF) systems frequently employ pulse compressors to augment peak output power, thereby reducing the required number of RF sources and enhancing cost-efficiency. A prominent class of these devices utilizes single resonant cavities supporting two degenerate modes to achieve high performance within a compact footprint. However, the inherent coupling of these...
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Hayk Sargsyan (Center for the Advancement of Natural Discoveries using Light Emission)17/08/2026, 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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Xueyi Xu (Institute of High Energy Physics)17/08/2026, 16:00MC2.A04: FELsPoster Presentation
Coherent X-ray beams with energy above 50 keV have been found to have important applications in many research fields.
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The linac injector of the proposed Circular Electron-Positron Collider (CEPC), with electron energy up to 30 GeV, is a strong candidate for driving such high-energy X-ray free-electron lasers (XFELs).
In this work, we propose a SASE FEL scheme based on the CEPC linac.
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Jinghe Yang (China Institute of Atomic Energy)17/08/2026, 16:00MC2.A05: Industrial and medical acceleratorsPoster Presentation
Non-destructive testing is one of critical areas of industrial application for radiation technology, widely used in pressure vessel inspection, and cargo inspection. Electron linear accelerators play a pivotal role in these applications by generating X-rays through hitting the target by electron beam. To meet the evolving demands of non-destructive testing, research has been conducted on...
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Brahim Mustapha (Argonne National Laboratory)17/08/2026, 16:00MC3.A03: Other proton/ionPoster Presentation
Significant progress has been made in the development of AI-ML tools at the ATLAS heavy-ion linac at Argonne. Although all tools were successfully tested online, they were not accessible to the operators in the control room. To facilitate this, we have developed a dedicated AI-ML interface that allows the user to select the beamline to tune, the task to perform, hit the execute button and...
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Junzhao You (Peking University)17/08/2026, 16:00MC3.A05: RFQsPoster Presentation
A 36.526 MHz coaxial-split RFQ(Radio Frequency Quadrupole) accelerator has been developed for cyclotron injection. The main advantage of this cavity is that it can overcome the problem of an excessively large transverse size of conventional RFQs at low frequency, which is beneficial for the axial injection of the cyclotron and reduces the influence on the cyclotron yoke magnet. This...
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Zihe Gao (Shanghai Synchrotron Radiation Facility)17/08/2026, 16:00MC1.A01: Beam Dynamics, beam simulations, beam transportPoster Presentation
A fully automated beam dynamics design method based on genetic algorithm is proposed for a 15 GHz X-band three-cell standing wave accelerating structure to meet the miniaturization requirements of X-ray based intraoperative radiotherapy devices. The genetic algorithm simultaneously optimizes the field distribution and phase relationships of the three cavities, achieving both electron beam...
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jing fang (China Institute of Atomic Energy)17/08/2026, 16:00MC1.A01: Beam Dynamics, beam simulations, beam transportPoster Presentation
The China Institute of Atomic Energy proposes an H2+ high-current separated-sector cyclotron facility as a continuous neutron source, targeting a 150 MeV, 10 mA proton beam after stripping extraction. The RFQ front end is designed for pre-acceleration and injection matching into the second-stage cyclotron. The matching requirements include low-loss transport through the RFQ and transfer line,...
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Hooman Hassanzadegan (European Spallation Source)17/08/2026, 16:00MC4.A01: Beam diagnosticsPoster Presentation
The European Spallation Source (ESS) employs 266 ionization chamber beam loss monitors (icBLMs) and 82 neutron beam loss monitors (nBLMs). These detectors provide detailed information on beam loss distribution along the ~600 m ESS linac and play a critical role in machine protection. During the second round of beam commissioning to the Tuning Beam Dump in spring 2026, systematic tests were...
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Aodhan McIlvenny (Lawrence Berkeley National Laboratory)17/08/2026, 16:00MC2.A02: Electron linac projectsPoster Presentation
BeamNetUS is a collaborative user network of twelve beam test facilities spanning six U.S. Department of Energy national laboratories, dedicated to advancing particle accelerator research, technology development, and applications. Through an annual open call for proposals, BeamNetUS invites exploratory research aimed at seeding new collaborations and fostering innovation across the accelerator...
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Isaac Wiens (Los Alamos National Laboratory)17/08/2026, 16:00MC3.A01: Industrial and medical acceleratorsPoster Presentation
The reliability of high-voltage Cockcroft-Walton injector systems is strongly dependent on the performance of insulating structures operating in SF₆ environments. This work presents a comprehensive study of the refurbishment and breakdown mitigation of an SF₆-insulated acrylic jacket in a 750 keV Cockcroft-Walton injector system that exhibited persistent arc-down events due to surface...
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Alexander Malyzhenkov (European Organization for Nuclear Research)17/08/2026, 16:00MC1.A01: Beam Dynamics, beam simulations, beam transportPoster Presentation
Second beam line has recently been installed and commissioned at CLEAR (CERN Linear Accelerator for Research). The line begins with a switchyard consisting of two dipole bending magnets that offset the beam from its original path, along with quadrupoles and sextupoles placed between the bends to close the first- and second-order dispersion, respectively. In this work, based on analytical...
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Takafumi Hara (High Energy Accelerator Research Organization)17/08/2026, 16:00MC2.A02: Electron linac projectsPoster Presentation
Under MEXT Advanced Accelerator element Technology Development (ATD) program, a prototype ILC cryomodule (CM) is being designed and manufactured at KEK. The CM consists of eight 9-cell superconducting cavities, magnetic shields, power couplers, frequency tuners, a thermal shield, cooling pipes, and a superconducting magnet for beam focusing.
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Due to the large number of components and strict... -
Cheng Wang (Shanghai Synchrotron Radiation Facility)17/08/2026, 16:00MC1.A02 Electron and ion sources, guns, photo injectors, charge breedersPoster Presentation
High-gradient photocathode electron guns, serving as electron sources for advanced linear light sources, have been fully validated to enhance the overall performance of the system. As cryogenic electron guns emerge as the future trend for ultra-compact electron sources, the extremely high electric fields within the cavity induce significantly stronger dark currents. This paper simulates this...
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Heetae Kim (Institute for Basic Science)17/08/2026, 16:00MC4.A02: Cryomodules and cryogenicsPoster Presentation
The pre-production development of the single-spoke resonator 2 (SSR2) cavity and its associated cryomodule is underway for the superconducting linear accelerator (SCL2) at RAON. This research presents the main design parameters of the SSR2 cavity, along with analyses of the electric and magnetic field distributions. The designs of the frequency tuner and fundamental power coupler are also...
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Meifei Liu (Institute of High Energy Physics)17/08/2026, 16:00MC4.A06: RF power sources and power couplersPoster Presentation
To satisfy the beam power upgrade from 100 kW to 500 kW for the China Spallation Neutron Source Phase II (CSNS-Ⅱ), 30 sets of high-efficiency and miniaturized P-band (324 MHz/648 MHz) klystrons will be deployed for the linear superconducting accelerator, with the development of fully domestic klystrons initiated. Traditional P-band single-beam klystrons adopt double-reentrant cylindrical...
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Zhongshan Li (Institute of Modern Physics)17/08/2026, 16:00MC3.A05: RFQsPoster Presentation
A new radiofrequency quadrupole (RFQ) accelerator has been designed for ion therapy at the Institute of Modern Physics, Chinese Academy of Sciences. This RFQ, operating at 162.5 MHz, accelerates carbon ions to 0.8 MeV/u. To achieve a compact RFQ with high beam transmission efficiency, an adiabatic capture design and an equal-separatrix-area technique were employed in beam dynamic design. To...
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Peng Liu (Chinese Academy of Sciences)17/08/2026, 16:00MC4.A05: Other technologyPoster Presentation
The upgrade of Beijing Electron–Positron Collider (BEPCII) is a double-ring machine used for both high-energy physics experiments and synchrotron radiation research.In order to further improve the performance of the machine, BEPCII has upgraded the brightness in the high-energy zone (BEPCII-U). As a key system in BEPCII-U, the fast Kicker pulse power supply system for storage ring injection is...
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Seok Ho Moon (Korea Multi-purpose Accelerator Complex)17/08/2026, 16:00MC1.A01: Beam Dynamics, beam simulations, beam transportPoster Presentation
The Korea Multi-purpose Accelerator Complex (KOMAC) in Gyeongju, currently operates a 100 MeV high-current proton linear accelerator. This facility actively supports a wide range of applications, including semiconductor radiation testing and fundamental scientific research. Recently, a upgrade plan has been initiated to upgrade the maximum beam energy to 200 MeV to meet increasing user...
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Guoxin Chen (Institute of Modern Physics, Chinese Academy of Sciences)17/08/2026, 16:00MC3.A06: Room temperature structuresPoster Presentation
A high-intensity rapid-cycling accelerator facility to produce the medical isotope products is proposed in China. To meet the injection requirements of the rapid-cycling synchrotron, an H-mode DTL structure with transverse focusing is adopted to compensate the space-charge effect and maintain high beam quality. In this paper, the physical design of the drift tube linac (DTL) is presented. A...
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Yongke Zhao (Zhangjiang Laboratory)17/08/2026, 16:00MC1.A01: Beam Dynamics, beam simulations, beam transportPoster Presentation
The FCC-ee injector complex is mainly composed of an electron source, a positron source, a damping ring, and a high-energy linac. The positron linac, which is part of the positron source, accelerates the positron beams from about 200MeV to 2.86 GeV before their injection to the damping ring. It is designed, simulated and optimized for the best positron beam performance at the end of the linac...
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Changsun Na (Pohang University of Science and Technology)17/08/2026, 16:00MC4.A01: Beam diagnosticsPoster Presentation
The longitudinal bunch shape is important for beam dynamics and accelerator optimization. In our previous study, a capacitive pick-up type bunch shape monitor (CPU-BSM) was developed for nondestructive measurement of nonrelativistic ion-beam bunch shapes. However, beamline applications may require a larger aperture due to beam size, alignment tolerances, and installation constraints. In this...
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Dr Shouta Ikeda (Institute of Science Tokyo)17/08/2026, 16:00MC3.A04: Proton linac projectsPoster Presentation
The accelerator-driven compact neutron source systems RANS and RANS-II have been operated at RIKEN for many years. To enable on-site applications, the development of a transportable neutron source system, RANS-III, has been initiated, requiring significant reductions in size and weight for automobile transportation. To meet this requirement, a compact four-vane RFQ linac operating at 500 MHz...
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Sangbeen Lee (Korea Atomic Energy Research Institute)17/08/2026, 16:00MC4.A04: Low level RFPoster Presentation
The Heavy-ion Irradiation Facility (KAHIF) RFQ is transitioning its Low-Level RF (LLRF) infrastructure from a legacy analog system to a modern digital architecture to enhance the stability of its 25.96 MHz pulsed operation. The existing analog system faces limitations in precise phase regulation and compensation for the nonlinear pulse droop inherent in its vacuum tube amplifier chain.
This...
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fanyu wang (Institute of High Energy Physics, Chinese Academy of Sciences)17/08/2026, 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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Kwanghoon Kim (Pohang Accelerator Laboratory)17/08/2026, 16:00MC4.A07: Room temperature RFPoster Presentation
A prototype RF absorbing load has been designed at the Pohang Accelerator Laboratory to stably absorb multi‑megawatt peak power and several kilowatts of average power. Conventionally, silicon carbide (SiC) loads have been widely employed for residual RF power absorption. In this study, however, a different approach was adopted by coating an absorbing material onto an aluminum structure,...
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Ha-Na Kim (Institute for Basic Science)17/08/2026, 16:00MC1.A02 Electron and ion sources, guns, photo injectors, charge breedersPoster Presentation
The resonance ionization laser ion source (RILIS) has become the most-used ion source type in the ISOL (Iso tope Separator for On-Line) facilities worldwide due to its element selectivity and high ionization efficiency. The hot-cavity type RILIS developed at RAON is based on resonant excitation of atomic transitions by the frequency tuned laser beams which are overlapped temporally and...
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Dr Yuki Abe (High Energy Accelerator Research Organization)17/08/2026, 16:00MC4.A08: Superconducting RFPoster Presentation
Contamination by particulate matter, such as dust and debris, during the assembly of SRF cavities and their associated components can significantly degrade cavity performance due to thermal losses and field emission. Therefore, it is essential to suppress both the generation and intrusion of particulates in addition to maintaining a clean environment. Human activity is a dominant source of...
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Dr Aleksey Adonin (GSI Helmholtz Centre for Heavy Ion Research)17/08/2026, 16:00MC1.A02 Electron and ion sources, guns, photo injectors, charge breedersPoster Presentation
The heavy ion accelerator facility GSI (Darmstadt, Germany) is internationally recognized as a unique center for research, offering over 100 different ion species derived from 34 chemical elements, ranging from hydrogen to uranium. Scientific experiments utilizing high-energy ion beams provided by the heavy ion synchrotron SIS-18 are typically served by pulsed high-current ion sources....
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ZHENGHUI Mi (Chinese Academy of Sciences)17/08/2026, 16:00MC4.A08: Superconducting RFPoster Presentation
The Institute of High Energy Physics (IHEP) developed the 1.5 GHz third harmonic cavity system for the Hefei Advanced Light Facility (HALF) project. This paper primarily introduces development and test results of the 1.5 GHz cavity and cryomodule. The structure of the harmonic cavity has been simplified, and an integral welding method for the cavity with helium vessel has been adopted to...
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Dr Rishabh Bajpai (High Energy Accelerator Research Organization), Mathieu Omet (High Energy Accelerator Research Organization)17/08/2026, 16:00MC4.A02: Cryomodules and cryogenicsPoster Presentation
Piezoelectric actuators are widely used in SRF accelerators to compensate for Lorentz force detuning. Since the stroke (displacement) of piezo actuators decreases at cryogenic temperature, accurate evaluation under operating conditions is important. Existing approaches either use the SRF cavity response as an indirect indicator or estimate the stroke from capacitance measurements during...
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Sofia Johannesson (European Spallation Source)17/08/2026, 16:00MC1.A01: Beam Dynamics, beam simulations, beam transportPoster Presentation
The European Spallation Source (ESS) is in the final stages of commissioning its linear accelerator (linac), which aims to deliver a high-power proton beam for neutron production. Understanding the dynamics in the machine and comparing measurements with the model can provide a deeper insight into the machine’s performance and help avoid possible issues when we start ramping up the power....
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Ralitsa Sharankova (Fermi National Accelerator Laboratory)17/08/2026, 16:00MC4.A01: Beam diagnosticsPoster Presentation
The Fermilab Linac delivers 400 MeV H- beam to the Booster rapid cycling synchrotron. Longitudinal dynamics in the Linac affects the beam losses in the Linac itself as welll as at the Booster. To understand better the longitudinal beam properties, two bunch shape monitors (BSM) in the Linac transition section where RF frequency changes from 201 MHz to 805 MHz, were recently brought back to...
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Yu Du (Institute of Modern Physics, Chinese Academy of Sciences)17/08/2026, 16:00MC1.A01: Beam Dynamics, beam simulations, beam transportPoster Presentation
F-divergence can be used to precisely quantify the differences between beam distributions in high-dimensional phase space, as it comprehensively captures the total contribution of discrepancies from all points in phase space. Current applications of f-divergence are primarily confined to the static comparison of distributions. This paper aims to investigate its evolution during beam transport....
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Xin Ma (Chinese Academy of Sciences)17/08/2026, 16:00MC3.A02: Ion linac projectsPoster Presentation
The CAFE2 accelerator, upgraded from CAFe at IMP, supports superheavy element research. Based on the RAMI framework, this paper decomposes CAFE2 using PBS and applies fault tree analysis at system, subsystem, and equipment levels to identify beam trip events. Historical data show that the superconducting section and control system are the main causes of beam losses. Although CAFE2 has high...
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Soyeon Kim (Ulsan National Institute of Science and Technology)17/08/2026, 16:00MC2.A07: Synchrotron light sourcesPoster Presentation
The linear accelerator of the PLS-II in Pohang has been in operation for approximately 30 years, leading to performance degradation and stability issues. To address these challenges, this study proposes a storage ring injector based on a laser-plasma accelerator (LPA), capable of generating GeV-class electron beams with high accelerating gradients, and analyzes its feasibility. Assuming an...
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Vlada Yarygova (Budker Institute of Nuclear Physics)17/08/2026, 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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Ziga Kroflic (Cosylab)17/08/2026, 16:00MC4.A01: Beam diagnosticsPoster Presentation
In collaboration with the European Spallation Source (ESS) and Riga Technical University, we wanted to explore real-time ML model inference on FPGAs for beam waveform classification. To identify a viable solution, we evaluated two ML toolchains on the Xilinx Versal VCK190 adaptive SoC. The first uses the Vitis AI toolchain to integrate the DPUCVDX8G deep learning processing unit and 64-tile AI...
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Emre Cosgun (High Energy Accelerator Research Organization)17/08/2026, 16:00MC4.A01: Beam diagnosticsPoster Presentation
The J-PARC Muon Linac is being developed for precision measurements of the muon anomalous magnetic moment and the search for the muon electric dipole moment using a reaccelerated thermal muon beam. The Medium Energy Beam Transport (MEBT) line, planned for commissioning in 2027, will transport and match the muon beam to the Inter-digital H-mode drift tube linac (IH-DTL). Because the expected...
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Hyeon Myeong Jeong (Ulsan National Institute of Science and Technology)17/08/2026, 16:00MC1.A04 Plasma and wakefield accelerationPoster Presentation
Laser wakefield acceleration (LWFA) enables compact accelerator with accelerating gradient of GV/cm scale in the wakefield in the plasma excited by ponderomotive force of intense laser. We used the waveguide to increase interaction length and downramp injection method to control the injection which results in electron beams with GeV scale energy and low energy spread. However, to combine the...
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DAISUKE SATOH (National Institute of Advanced Industrial Science and Technology)17/08/2026, 16:00MC2.A06: Other electron acceleratorsPoster Presentation
The dielectric assist accelerating (DAA) structure is a power-efficient RF accelerating cavity. A room-temperature C-band DAA structure has demonstrated a high shunt impedance of approximately 600 MΩ/m. Nevertheless, the attainable accelerating field in DAA structures has so far been limited to approximately 10–12 MV/m, mainly because of RF breakdown-related phenomena, including...
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Jiayin Du (Institute of High Energy Physics)17/08/2026, 16:00MC1.A01: Beam Dynamics, beam simulations, beam transportPoster Presentation
With the rapid advancement of high-intensity linear accelerators, achieving efficient and accurate design has become a critical challenge in modern accelerator physics. As beam intensity increases, the space charge effect — arising from the mutual repulsion among charged particles within the beam — becomes increasingly significant and must be incorporated into realistic simulations. In this...
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Dr Anne Oppelt (Deutsches Elektronen-Synchrotron DESY)17/08/2026, 16:00MC1.A02 Electron and ion sources, guns, photo injectors, charge breedersPoster Presentation
Gun5, the new generation of normal-conducting 1.3 GHz RF guns for high-gradient and long-pulse operation at DESY’s linac driven free-electron lasers is in operation at PITZ and European XFEL. The improved gun design allows for RF pulse durations of up to 1 ms at 10 Hz repetition rate, at gradients of ~60 MV/m at the cathode. Special features are two RF pickups for RF regulation and a symmetric...
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Pablo Martinez Reviriego (European Organization for Nuclear Research)17/08/2026, 16:00MC3.A05: RFQsPoster Presentation
CERN's Linear Accelerator 4 (Linac4) is an H⁻ accelerator that has been in operation since 2020. After acceleration, the ions are converted to protons via electron stripping and sent downstream to various experiments on the CERN site. Its first accelerating structure is a 3 m long Radio-Frequency Quadrupole (RFQ), operating at 78 kV inter-vane voltage and a peak surface field of 34 MV/m. In...
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Shriraj Kunjir (Facility for Rare Isotope Beams)17/08/2026, 16:00MC4.A05: Other technologyPoster Presentation
RF and SRF operations require rapid decisions under tight time constraints while navigating machine data, logs, procedures and institutional knowledge. In many troubleshooting scenarios, the bottleneck is not diagnostic signal availability, but the time required to gather context, reconstruct event timelines, communicate status and transfer knowledge across shifts. This talk presents how AI...
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Antonio Gilardi (European Organization for Nuclear Research)17/08/2026, 16:00MC4.A05: Other technologyPoster Presentation
Machine learning (ML) is increasingly recognized as a fundamental tool in modern accelerator physics, offering new capabilities to complement and extend traditional analytical approaches. A structured programme of ML studies has been initiated at CLEAR (CERN Linear Electron Accelerator for Research), covering three principal directions: beam diagnostics, charge forecasting, and automated...
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Liwen Liu (Institute of Modern Physics, Chinese Academy of Sciences)17/08/2026, 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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Michael Galonska (GSI Helmholtz Centre for Heavy Ion Research)17/08/2026, 16:00MC3.A01: Industrial and medical acceleratorsPoster Presentation
A mixed C/He ion beam with varying helium fraction has been investigated at GSI to study a new mode of image guidance for carbon ion beam therapy. “Mixed” refers to a beam with C and He ions extracted simultaneously from a single ion source (CAPRICE ECR) provided for the subsequent UNILAC-SIS18 accelerator complex during two previous beam times (¹²C³⁺/⁴He⁺ beam). Both ion species were...
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Alexander Shemyakin (Fermi National Accelerator Laboratory)17/08/2026, 16:00MC1.A01: Beam Dynamics, beam simulations, beam transportPoster Presentation
The Side-Coupled Linac (SCL) section of the FNAL Linac accelerates the 20-25 mA H- beam from 116 MeV to 402 MeV in 7 modules. All major components of this section are re-calibrated using beam-based measurements. Module gradients and phases are determined from the phase scans. Longitudinal bunch parameters at the entrance of the section are reconstructed using a Bunch Shape Monitor....
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Pierrick Hamel (Commissariat à l'Energie Atomique)17/08/2026, 16:00MC3.A05: RFQsPoster Presentation
The IPHI RFQ, designed at CEA in the early 2000s and commissioned in 2016, was the first RFQ developed at CEA. It accelerates a 100 mA beam up to 3 MeV at high duty cycle. Subsequent RFQ projects (SPIRAL2, LINAC4, ESS) enabled improvements in RFQ design and modeling.
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Based on this experience, an upgrade of the IPHI accelerator has been investigated to increase beam energy and improve... -
Xiang He (Institute of High Energy Physics, Chinese Academy of Sciences)17/08/2026, 16:00MC4.A07: Room temperature RFPoster Presentation
BEPCII Linac operated with 20 power sources before the energy upgrade in summer 2024. To support sustained 2.35 GeV electron-positron collisions and maintain at least one redundant power source for operational reliability, the Linac required an energy increase. Among these, Power sources No. 6 (K6) and No. 12 (K12) exhibited relative lower energy contribution. Phase-matching misalignment...
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Won Hee Min (Chungnam National University, Institute for Basic Science)17/08/2026, 16:00MC4.A05: Other technologyPoster Presentation
RAON uses EPICS to integrate local control systems into central control. Technical notes for system installation and management are documented in TeX format and managed with relevant code and files in a Git-based configuration management environment on an internal network. This study examines the applicability of Retrieval-Augmented Generation (RAG) to control system technical documents for...
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Qi Yu Kong (Dongguan Neutron Science Center)17/08/2026, 16:00MC3.A06: Room temperature structuresPoster Presentation
The development of compact and efficient low-energy linear accelerators is crucial for advanced scientific and medical applications. While H-mode Drift Tube Linacs (DTL) offer superior shunt impedance compared to conventional Alvarez structures, they traditionally suffer from transverse defocusing and longitudinal instability when operating at a 0$^\circ$ synchronous phase. This paper presents...
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Dr Eunhun Im (Institute for Basic Science)17/08/2026, 16:00MC1.A02 Electron and ion sources, guns, photo injectors, charge breedersPoster Presentation
Preparation of the major subsystems is underway for the beam extraction test of the 28 GHz ECR ion source under 18 GHz operating conditions. For the superconducting magnet, ramp-up tests are being conducted to ensure stable operation under the target operating conditions. For plasma generation, the gas injection system and the RF injection system using an 18 GHz klystron are being prepared....
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Heishun Zen (Kyoto University)17/08/2026, 16:001MC2.A04: FELsPoster Presentation
Kyoto University Free Electron Laser (KU-FEL) facility has been developed for energy-related research by the Institute of Advanced Energy, Kyoto University. There are two accelerator-driven infrared coherent light sources in the facility. One is the oscillator-type FEL whose wavelength range is 3.4 to 26 micro-m*. The other one is the THz-Coherent Undulator Radiation (THz-CUR) source whose...
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Lars Groening (GSI Helmholtz Centre for Heavy Ion Research)17/08/2026, 16:00MC3.A02: Ion linac projectsPoster Presentation
The Alvarez-type post-stripper DTL at GSI accelerates intense ion beams with A/q≤8.5 from 1.4 to 11.4 MeV/u. After more than 45 years of operation, it suffers from aging and its design does not meet the requirements of the upcoming FAIR project. Series production of the new DTL Alvarez 2.0 is ongoing. In 2025, the last out of 25 cavity sections, forming five cavities, underwent the site...
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Sungbin Park (Korea Multi-purpose Accelerator Complex)17/08/2026, 16:00MC3.A04: Proton linac projectsPoster Presentation
As a possible option for 200 MeV energy upgrade in Korea Multi-purpose Accelerator Complex (KOMAC), separated drift tube linac (SDTL) type is considered. In this study, a prototype drift tube for the SDTL is developed and tested. Based on the optimum cell parameters, detailed design of drift tube is derived. Especially, cooling channels of the drift tube consist of central and side channels to...
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Chong Shik Park (Korea University Sejong Campus)17/08/2026, 16:00MC1.A01: Beam Dynamics, beam simulations, beam transportPoster Presentation
Precise orbit control in low- and medium-energy beam transport sections is essential for efficient beam delivery in heavy-ion linacs. In the RAON accelerator, the LEBT and MEBT sections are strongly affected by space charge effects, nonlinear beam dynamics, and variations in beam conditions, limiting the performance of conventional correction methods. In this work, we develop a reinforcement...
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GHAZAL RAO (Institute of High Energy Physics)17/08/2026, 16:00MC4.A07: Room temperature RFPoster Presentation
Enhancing the accelerating gradient of electron linacs reduces facility size and cost. For the 100-km CEPC Higgs-factory ring, injector linac gradient is a critical parameter because, once final beam energy is fixed, accelerating gradient determines linac length and strongly influences overall system design. C-band accelerating structures are considered for the CEPC high-energy injector...
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Jinghe Yang (China Institute of Atomic Energy), Shilin Li (China Institute of Atomic Energy)17/08/2026, 16:00MC3.A04: Proton linac projectsPoster Presentation
High-intensity proton linacs are crucial in spallation neutron sources（SNS）, compact accelerator-driven neutron source (CANS), proton therapy, together with other facilities that require higher beam intensity as the development of application systems. To meet the research and engineering demands of high-intensity pulsed proton linacs, a structure consisting of modular APF IH-DTLs and external...
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Pablo Martinez Reviriego (European Organization for Nuclear Research)17/08/2026, 16:00MC2.A02: Electron linac projectsPoster Presentation
The high-energy linac of the Future Circular Collider electron–positron (FCC-ee) injector requires high-performance RF accelerating structures to efficiently reach 20 GeV with stable operation. A tapered travelling-wave structure operating at 3 GHz has been designed to optimize accelerating performance and suppress wakefields.
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This work focuses on the development of a full 3D model of the... -
Ana Durdevic (European Organization for Nuclear Research)17/08/2026, 16:00MC4.A06: RF power sources and power couplersPoster Presentation
In fundamental power couplers for RF accelerators, secondary electron emission can give rise to multipacting (MP), leading to RF losses, heating, and performance degradation. A mitigation technique consists of superimposing an electrostatic DC field onto the RF field by applying a bias voltage between the inner and outer conductors of the coaxial power coupler. This approach alters electron...
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Xingguang Liu (Chinese Academy of Sciences)17/08/2026, 16:00MC1.A01: Beam Dynamics, beam simulations, beam transportPoster Presentation
A C-band test platform has been built at IHEP-Dongguan for studies of high-gradient RF structures and advanced beam manipulation techniques toward future light source projects. Prototypes of 3.6-cell C-band RF photocathode gun achieved high-power operation close to 150 MV/m and beam extraction at about 137 MV/m cathode gradient, representing the first reported beam extraction from a C-band RF...
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Riccardo Boldrini (Sapienza University of Rome)17/08/2026, 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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Ryan Bodenstein (Thomas Jefferson National Accelerator Facility)17/08/2026, 16:00MC4.A05: Other technologyPoster Presentation
The proposed energy upgrade of the Continuous Electron Beam Accelerator Facility (CEBAF) incorporates Fixed-Field Alternating-gradient (FFA) arcs utilizing permanent magnet technology. Given the radiation environment within the CEBAF tunnel enclosure, validating the long-term magnetic stability of these materials is a critical step for the project's technical feasibility. This contribution...
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Dr Amichay Perry (Soreq Nuclear Research Center)17/08/2026, 16:001MC3.A04: Proton linac projectsPoster Presentation
Soreq Applied Research Accelerator Facility (SARAF) aims to deliver up to 5 mA proton/deuteron beams at energies up to 40 MeV. SARAF is primarily a continuous wave (CW) machine, and thus, machine studies so far focused mainly on the steady state beam properties. However, the beam commissioning of the superconducting linac (scheduled to start in Q2 2026) will naturally commence with a...
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Yuanshuai Qin (Institute of Modern Physics, Chinese Academy of Sciences)17/08/2026, 16:00MC1.A01: Beam Dynamics, beam simulations, beam transportPoster Presentation
ADS is considered as an effective way for the transmutation of nuclear waste. With multi-beam injecting into multi-target in the reactor, neutron distribution will become uniform, which is beneficial to the the safety and economy of the reactor. With transverse field RF cavities, the adjacent micro bunches in CW beam could be deflectied to different directions and 2D beam splitting could be...
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Hao Hu (Huazhong University of Science and Technology)17/08/2026, 16:00MC2.A02: Electron linac projectsPoster Presentation
The Main Linac of the Super Tau-Charm Facility (STCF) injector comprises 36 series-connected constant-gradient traveling-wave accelerating structures. Variations in injection timing induce complex coupling between the independent RF transient filling and transient beam loading effects, systematically altering the beam energy spread. As a bunch traverses successive structures, these localized...
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Xinyuan Feng (Institute of High Energy Physics)17/08/2026, 16:00MC1.A01: Beam Dynamics, beam simulations, beam transportPoster Presentation
This paper presents a compensation algorithm based on a Multi-Objective Genetic Algorithm (MOGA) for recovering beam parameters in high-intensity superconducting proton linacs when one or more radio-frequency cavities degrade or fail. The algorithm directly adjusts the amplitude and phase of adjacent or all cavities to restore the beam energy and energy spread at the linac exit. Compared with...
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John Schmidt (Los Alamos National Laboratory)17/08/2026, 16:00MC3.A04: Proton linac projectsPoster Presentation
Proton radiography (pRad) has operated with 800 MeV protons from the Los Alamos Neutron Science Center’s LINAC since 1997. Having demonstrated its exceptional ability to see through high areal densities and high Z material, discussions are ongoing on best way to bring this facility into the future. Higher energy protons decrease multiple blur terms in the final radiographic image, and are...
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Dr Sergey Vaintraub (Soreq Nuclear Research Center)17/08/2026, 16:00MC3.A04: Proton linac projectsPoster Presentation
The Soreq Applied Research Accelerator Facility (SARAF) is advancing to Phase II to deliver continuous wave proton and deuteron beams (5-40 MeV, ~5 mA). Handling the resulting ~200 kW beam power requires a robust dump capable of dissipating high power densities. To meet this challenge, a windowless liquid Gallium-Indium (Ga-In) jet target, GaLiT,* was designed. It generates a stable ~5 m/s...
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Cong Zhang (Institute of High Energy Physics)17/08/2026, 16:00MC4.A08: Superconducting RFPoster Presentation
The 80–300 MeV accelerating section of the CSNS-II linac is a superconducting accelerator, consisting of 10 double spoke modules and 8 elliptical cavity modules.For a user facility, the downtime associated with removing the module from the linac and returning it to the cleanroom for rinsing and reconditioning is unacceptable. Therefore, it is necessary to develop on-line performance recovery...
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Bruce Yee-Rendon (Japan Atomic Energy Agency)17/08/2026, 16:00MC1.A01: Beam Dynamics, beam simulations, beam transportPoster Presentation
In recent years, the Japan Proton Accelerator Research Complex (J-PARC) has completed the design report for a Proton Beam Irradiation Facility (PBIF). This facility will be used for material irradiation, the manufacturing of medical radioactive isotopes, testing semiconductor soft errors, and providing proton beams for space applications, utilizing the H- beam generated by the J-PARC linac....
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Taekheon Kim (National Security Research Institute)17/08/2026, 16:00MC4.A06: RF power sources and power couplersPoster Presentation
Microwave pulse compressors(MPCs) are used in linear accelerator RF systems to enhance peak power, as well as in other high power RF application such as IEMI testing. This paper presents a theoretical and experimental study on a low-power active MPC employing a spark gap switch. In particular, the change of resonant frequency as a function of spark gap length in an active MPC structure...
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Dong-O Jeon (Institute for Basic Science)17/08/2026, 16:00MC3.A03: Other proton/ionPoster Presentation
This work compares results from transverse tomography based on profile measurements with results from Allison scanners. It considers perturbing effects from non-linear (dipole) fields and space charge.
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Thomas Lucas (Paul Scherrer Institute)17/08/2026, 16:00MC1.A02 Electron and ion sources, guns, photo injectors, charge breedersPoster Presentation
Approximately 35 years after it was first conceptualised, a one-of-a-kind travelling-wave RF photogun has been designed, realised, and tested, achieving cathode peak fields of up to 180 MV/m. Installed at the C-band test stand at PSI, the system demonstrates robust and reliable high-power operation. We present an overview of the RF design, the unique tuning-free realisation, and the results of...
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Tylor Sové (Canadian Light Source (Canada))17/08/2026, 16:00MC2.A02: Electron linac projectsPoster Presentation
In 2024 the Canadian Light Source (CLS) retired its ∼60 year old 2856 MHz, 250 MeV injector electron LINAC, and replaced it with a 3000 MHz LINAC designed and built by RI Research Instruments GmbH. The design includes a SLAC Energy Doubler (SLED) system to power two of the three main accelerating structures and is intended to produce a beam of the same energy. Many setbacks were encountered...
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Ersin Cicek (High Energy Accelerator Research Organization)17/08/2026, 16:00MC4.A04: Low level RFPoster Presentation
At J-PARC LINAC, cavity phase monitors (CPMs) monitor RF phase variation between neighboring cavities; existing system remains reliable but requires dedicated hardware per station and supports only two RF inputs per monitor. As LLRF DFB system has been upgraded from cPCI to MicroTCA.4, RF pickup signals are aggregated in a common rack, requiring CPM upgrade to multi-channel monitoring; as an...
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Chengcheng Xiao (Shanghai Advanced Research Institute, Chinese Academy of Sciences)17/08/2026, 16:00MC4.A04: Low level RFPoster Presentation
The X-band linearizer at the Shanghai Soft X-ray Free-Electron Laser (SXFEL) is used to compensate the nonlinear energy chirp of the electron beam and requires a highly stable low-level radio-frequency (LLRF) system. To improve the performance of the X-band RF system, the LLRF chain was upgraded in three aspects: the clock and local-oscillator electronics, the X-band solid-state power...
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Dr Yuki Abe (High Energy Accelerator Research Organization)17/08/2026, 16:00MC1.A01: Beam Dynamics, beam simulations, beam transportPoster Presentation
The KEK-ATF is an R&D facility for the final focus system to develop nanometer beam technology for the International Linear Collider. The vertical beam size growth as a function of bunch intensity has been observed at the focal point (IP), mainly caused by wakefield effects. ATF provides an excellent environment for studying wakefield impacts on nanometer-scale beams. Mitigation and...
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Dr Jangwon Kwon (Institute for Basic Science)MC1.A01: Beam Dynamics, beam simulations, beam transportPoster Presentation
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