Research field (1)：
Particle, nuclear, cosmic-ray, and astrophysics - experiment
Research theme for competitive and other funds (1)：
2015 - 2018 Systematic experimental study of space-charge-induced beam instability in next-generation hadron accelerators using a compact ion-trap system
Papers (26)：
Saha P. K., Yoshimoto Masahiro, Hatakeyama Shuichiro, Hotchi Hideaki, Harada Hiroyuki, Tamura Fumihiko, Yamamoto Kazami, Yamazaki Yoshio, Kinsho Michikazu, Irie Yoshiro*. First measurement and online monitoring of the stripper foil thinning and pinhole formation to achieve a longer foil lifetime in high-intensity accelerators. Physical Review Accelerators and Beams (Internet). 2020. 23. 8. 082801\_1-082801\_13
H. Hotchi, H. Harada, N. Hayashi, M. Kinsho, K. Okabe, P. K. Saha, Y. Shobuda, F. Tamura, K. Yamamoto, M. Yamamoto, et al. J-PARC 3-GeV RCS: 1-MW beam operation and beyond. Journal of Instrumentation. 2020. 15. 7
Hotchi Hideaki, Harada Hiroyuki, Takayanagi Tomohiro. J-PARC RCS; High-order field components inherent in the injection bump magnets and their effects on the circulating beam during multi-turn injection. Journal of Physics; Conference Series. 2019. 1350. 012102\_1-012102\_5
Saha P. K., Shobuda Yoshihiro, Hotchi Hideaki, Harada Hiroyuki, Hayashi Naoki, Kinsho Michikazu, Tamura Fumihiko, Tani Norio, Yamamoto Masanobu, Watanabe Yasuhiro, et al. Simulation, measurement, and mitigation of beam instability caused by the kicker impedance in the 3-GeV rapid cycling synchrotron at the Japan Proton Accelerator Research Complex. Physical Review Accelerators and Beams (Internet). 2018. 21. 2. 024203\_1-024203\_20
Harada Hiroyuki, Saha P. K., Tamura Fumihiko, Meigo Shinichiro, Hotchi Hideaki, Hayashi Naoki, Kinsho Michikazu, Hasegawa Kazuo. Beam-based compensation of extracted-beam displacement caused by field ringing of pulsed kicker magnets in the 3 GeV rapid cycling synchrotron of the Japan Proton Accelerator Research Complex. Progress of Theoretical and Experimental Physics (Internet). 2017. 2017. 9. 093G01\_1-093G01\_16
Hotchi Hideaki, Harada Hiroyuki, Hayashi Naoki, Kinsho Michikazu, Okabe Kota, Saha P. K., Shobuda Yoshihiro, Tamura Fumihiko, Yamamoto Kazami, Yamamoto Masanobu, et al. Recent progress of the J-PARC RCS beam commissioning and operation; Efforts to realize a higher beam power beyond 1 MW. Proceedings of 16th Annual Meeting of Particle Accelerator Society of Japan (Internet). 2019. 574-578
Hotchi Hideaki, Harada Hiroyuki, Okabe Kota, Saha P. K., Shobuda Yoshihiro, Tamura Fumihiko, Yoshimoto Masahiro. Beam dynamics study for beam loss mitigation in the J-PARC RCS. Kasokuki. 2019. 16. 2. 109-118
Saha P. K., Hotchi Hideaki, Shobuda Yoshihiro, Harada Hiroyuki, Tamura Fumihiko, Watanabe Yasuhiro, Takayanagi Tomohiro. Dynamic variation of chromaticity for beam instability mitigation in the 3-GeV RCS of J-PARC. Proceedings of 10th International Particle Accelerator Conference (IPAC '19) (Internet). 2019. 171-173
Hotchi Hideaki, Harada Hiroyuki, Takayanagi Tomohiro. J-PARC RCS; High-order field components inherent in the injection bump magnets and their effects on the circulating beam during multi-turn injection. Proceedings of 10th International Particle Accelerator Conference (IPAC '19) (Internet). 2019. 2009-2012
Hotchi Hideaki. Study on beam dynamics of high intensity proton beam and mitigation of beam loss in J-PARC RCS. FAS Dayori (Internet). 2019. 18. 20-26
Achievement of a low-loss1-MW beam operation in the J-PARC RCS
(11th International Particle Accelerator Conference (IPAC '20))
Beam loss issues in the high-intensity beam operation at J-PARC RCS
(4th ICFA Mini-Workshop on Space Charge 2019)
Beam instability issues and measures at high intensity operation of J-PARC RCS
(Fermilab Workshop on Megawatt Rings \& IOTA/FAST Collaboration Meeting)
Effect of 2Qx-2Qy=0 resonance on phase-space injection painting
(Space Charge 2017)
Recent progress and future prospect of J-PARC accelerator
(International Workshop on Future Potential of High Intensity Accelerators for Particle and Nuclear Physics (HINT 2016))
