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Accelerator design for 1.3-MW beam power operation of the J-PARC Main Ring
Progress of Theoretical and Experimental Physics Pub Date : 2021-01-27 , DOI: 10.1093/ptep/ptab011 Susumu Igarashi 1 , Kenichirou Satou 1 , Chihiro Ohmori 1 , Yoshitugu Arakaki 1 , Masashi Furusawa 1 , Keigo Hara 1 , Katsushi Hasegawa 1 , Yoshinori Hashimoto 1 , Yoichiro Hori 1 , Hideaki Hotchi 1 , Koji Ishii 1 , Kotomi Kadowaki 1 , Norihiko Kamikubota 1 , Takuro Kimura 1 , Aine Kobayashi 1 , Tadashi Koseki 1 , Chikashi Kubota 1 , Yoshinori Kurimoto 1 , Noriyuki Matsumoto 1 , Kazuki Miura 1 , Yuichi Morita 1 , Shigeru Murasugi 1 , Ryotaro Muto 1 , Fujio Naito 1 , Takeshi Nakamura 1 , Kazuaki Niki 1 , Masahiro Nomura 1 , Kazuhito Ohmi 1 , Masashi Okada 1 , Katsuya Okamura 1 , Takao Oogoe 1 , Asato Orii 1 , Kenichi Sato 1 , Yoichi Sato 1 , Yoshihiro Sato 1 , Tatsunobu Shibata 1 , Taihei Shimada 1 , Masayuki Shimamoto 1 , Tetsushi Shimogawa 1 , Masashi Shirakata 1 , Takuya Sugimoto 1 , Yasuyuki Sugiyama 1 , Jumpei Takano 1 , Yoichi Takiyama 1 , Fumihiko Tamura 1 , Masaki Tejima 1 , Masahito Tomizawa 1 , Takeshi Toyama 1 , Masahiko Uota 1 , Shuei Yamada 1 , Masanobu Yamamoto 1 , Noboru Yamamoto 1 , Eiichi Yanaoka 1 , Masahito Yoshii 1
Progress of Theoretical and Experimental Physics Pub Date : 2021-01-27 , DOI: 10.1093/ptep/ptab011 Susumu Igarashi 1 , Kenichirou Satou 1 , Chihiro Ohmori 1 , Yoshitugu Arakaki 1 , Masashi Furusawa 1 , Keigo Hara 1 , Katsushi Hasegawa 1 , Yoshinori Hashimoto 1 , Yoichiro Hori 1 , Hideaki Hotchi 1 , Koji Ishii 1 , Kotomi Kadowaki 1 , Norihiko Kamikubota 1 , Takuro Kimura 1 , Aine Kobayashi 1 , Tadashi Koseki 1 , Chikashi Kubota 1 , Yoshinori Kurimoto 1 , Noriyuki Matsumoto 1 , Kazuki Miura 1 , Yuichi Morita 1 , Shigeru Murasugi 1 , Ryotaro Muto 1 , Fujio Naito 1 , Takeshi Nakamura 1 , Kazuaki Niki 1 , Masahiro Nomura 1 , Kazuhito Ohmi 1 , Masashi Okada 1 , Katsuya Okamura 1 , Takao Oogoe 1 , Asato Orii 1 , Kenichi Sato 1 , Yoichi Sato 1 , Yoshihiro Sato 1 , Tatsunobu Shibata 1 , Taihei Shimada 1 , Masayuki Shimamoto 1 , Tetsushi Shimogawa 1 , Masashi Shirakata 1 , Takuya Sugimoto 1 , Yasuyuki Sugiyama 1 , Jumpei Takano 1 , Yoichi Takiyama 1 , Fumihiko Tamura 1 , Masaki Tejima 1 , Masahito Tomizawa 1 , Takeshi Toyama 1 , Masahiko Uota 1 , Shuei Yamada 1 , Masanobu Yamamoto 1 , Noboru Yamamoto 1 , Eiichi Yanaoka 1 , Masahito Yoshii 1
Affiliation
The J-PARC Main Ring (MR) has supplied the high-intensity proton beam for the T2K long-baseline neutrino experiment since 2010. The present beam power is 510 kW and the total number of protons on the target reaches $3.64\times10^{21}$. To observe charge-conjugation and parity-transformation (CP) violation in the lepton sector with high accuracy, more protons need to be delivered to the T2K target. The project to upgrade the beam power to 1.3 MW started as a mid-term plan of the MR. In parallel to preparing a full technical design report, the technical designs of hardware upgrades using new technologies and all accelerator components that are necessary to deliver the 1.3-MW beam power are summarized and consolidated in this short paper. Further, this paper includes beam dynamics studies and simulation results for handling $3.3\times 10^{14}$ protons per pulse (ppp) without significant beam loss in the ring and transport lines. The Hyper-Kamiokande (HK) project has recently been approved, and construction has started; the MR upgrade and HK project will work together efficiently to study the CP violation.
更新日期：2021-01-27
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