Resources

Author(s): Nobuyuki Yoshimura, Takeshi Toyama, and Yoshihiro Shobuda This study presents a comprehensive investigation of intra-bunch dynamics in a high-intensity proton synchrotron, where strong space-charge forces and large chromatic phase coexist, through theoretical analysis, simulations, and experiments at the J-PARC Main Ring. Simulations supported by analytic foundations and experimental results, reveal how space charge modifies the decoherence...

Author(s): Ye Yang, Shlomo Caspi, and Lucas Brouwer We present an analytic solution for conical superconducting accelerator magnets and apply it to canted-cosine-theta magnets, which can potentially be used for the interaction region of particle colliders and medical accelerators. [Phys. Rev. Accel. Beams 28, 102401] Published Mon Oct 27, 2025

Author(s): Emmanouil Trachanas, Luca Bellan, Gyula Nagy, Antonio Palmieri, Andrea Bignami, Richard Arthur Wilhelm, Francesco Grespan, and Nikolaos Gazis The erosion of Radio-Frequency Quadrupole (RFQ) electrodes due to sputtering under ion irradiation is examined through coupled particle tracking and SDTrimSP (Static-Dynamic Transport of Ions in Matter Sequential-Parallel processing) simulations. Model validation was conducted using quartz crystal...

Author(s): Nikhil Bachhawat and Vladimir Litvinenko Symplectic maps are essential in finding analytically tractable solutions to the three-dimensional Maxwell-Vlasov equations in the relativistic, space-charge dominated regime. However, start-to-end symplectic tracking codes are not readily available, especially for photo-injectors. In this paper, we present a symplectification algorithm that transforms mechanical into canonical coordinates, while...

Author(s): Jan-Magnus Christmann, Laura A. M. D’Angelo, Herbert De Gersem, Sven Pfeiffer, Sajjad H. Mirza, Matthias Thede, Alexander Aloev, and Holger Schlarb Efficiently simulating laminated magnets with fast excitation cycles is a long-standing challenge. Especially when a nonlinear magnetization curve must be considered, simulation times often become prohibitive. To address this problem, we introduce the homogenized harmonic balance finite...

Author(s): Vitaliy Goryashko, Kazuaki Togawa, Peter Salén, and Anatoliy Opanasenko An upgrade of the SACLA linear accelerator is planned to achieve a kHz-level repetition rate and increased beam brightness. A key component of this upgrade is a new injector based on the existing pulsed DC gun with a thermionic cathode, featuring a novel architecture that combines multistage velocity bunching with a single stage of magnetic compression. Through...

Author(s): Shiro Takano, Kenji Fukami, Takahiro Inagaki, Taiki Iwashita, Chikara Kondo, Mitsuhiro Masaki, Kanichiro Ogata, Masaya Oishi, Yoshiyuki Saito, Masazumi Shoji, Minori Tajima, Kazuhiro Tamura, Tsutomu Taniuchi, Takahiro Watanabe, Hiroshi Yamaguchi, and Hitoshi Tanaka There has been a continuous effort to improve the performance of light sources by pursuing higher photon brilliance and coherence. This trend has been driving the lattice...