Zobrazeno 1 - 10
of 74
pro vyhledávání: '"Fumihiko Tamura"'
Autor:
Yoshihiro Shobuda, Hiroyuki Harada, Pranab Kumar Saha, Tomohiro Takayanagi, Fumihiko Tamura, Tomohito Togashi, Yasuhiro Watanabe, Kazami Yamamoto, Masanobu Yamamoto
Publikováno v:
Physical Review Accelerators and Beams, Vol 26, Iss 5, p 053501 (2023)
At the Rapid Cycling Synchrotron (RCS) in Japan Proton Accelerator Research Complex (J-PARC), theoretical predictions have indicated that the kicker impedance would excite the beam instability. A 1-MW beam with large emittance can be delivered to the
Externí odkaz:
https://doaj.org/article/3c042b8107c1491ba9f6feec55e56441
Autor:
Fumihiko Tamura, Yasuyuki Sugiyama, Masahito Yoshii, Masanobu Yamamoto, Chihiro Ohmori, Masahiro Nomura, Taihei Shimada, Katsushi Hasegawa, Keigo Hara, Masashi Furusawa
Publikováno v:
Physical Review Accelerators and Beams, Vol 22, Iss 9, p 092001 (2019)
Beam loading compensation in the rf cavities is a key for acceleration of high-intensity beams in the 3 GeV rapid cycling synchrotron (RCS) of the Japan Proton Accelerator Research Complex (J-PARC). Since we employ wideband magnetic alloy rf cavities
Externí odkaz:
https://doaj.org/article/07a2703a379a4b6b90e4dfae1de3a258
Autor:
Fumihiko Tamura, Hideaki Hotchi, Alexander Schnase, Masahito Yoshii, Masanobu Yamamoto, Chihiro Ohmori, Masahiro Nomura, Makoto Toda, Taihei Shimada, Katsushi Hasegawa, Keigo Hara
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 18, Iss 9, p 091004 (2015)
The rapid cycling synchrotron (RCS) in the Japan Proton Accelerator Research Complex (J-PARC) was originally designed to accelerate two high intensity bunches, while some of neutron experiments in the materials and life science experimental facility
Externí odkaz:
https://doaj.org/article/cc3e4a150fb3403aa0e5cadd2b7f12cf
Autor:
Chihiro Ohmori, Eizi Ezura, Keigo Hara, Katsushi Hasegawa, Yasuhiro Makida, Ryotaro Muto, Masahiro Nomura, Toru Ogitsu, Taihei Shimada, Alexander Schnase, Koji Takata, Akira Takagi, Fumihiko Tamura, Kazuhiro Tanaka, Makoto Toda, Masanobu Yamamoto, Masahito Yoshii
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 16, Iss 11, p 112002 (2013)
The future high intensity upgrade project of the J-PARC (Japan Proton Accelerator Research Complex) MR (Main Ring) includes developments of high gradient rf cavities and magnet power supplies for high repetition rate. The scenario describing the cavi
Externí odkaz:
https://doaj.org/article/9246a377233944f68e319536a5253b4f
Autor:
Fumihiko Tamura, Chihiro Ohmori, Masanobu Yamamoto, Masahito Yoshii, Alexander Schnase, Masahiro Nomura, Makoto Toda, Taihei Shimada, Katsushi Hasegawa, Keigo Hara
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 16, Iss 5, p 051002 (2013)
Beam loading compensation is a key for acceleration of a high intensity proton beam in the main ring (MR) of the Japan Proton Accelerator Research Complex (J-PARC). Magnetic alloy loaded rf cavities with a Q value of 22 are used to achieve high accel
Externí odkaz:
https://doaj.org/article/55df40df3419476d837b3afb2317e9b7
Autor:
Fumihiko Tamura, Masanobu Yamamoto, Chihiro Ohmori, Alexander Schnase, Masahito Yoshii, Masahiro Nomura, Makoto Toda, Taihei Shimada, Keigo Hara, Katsushi Hasegawa
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 14, Iss 5, p 051004 (2011)
For the acceleration of very high intensity protons in the 3 GeV rapid cycling synchrotron (RCS) of the Japan Proton Accelerator Research Complex (J-PARC), the beam loading compensation in the rf accelerating cavities is implemented. The magnetic-all
Externí odkaz:
https://doaj.org/article/9386da9636cb4b1cb1c68d8a54df3faa
Autor:
Fumihiko Tamura, Masanobu Yamamoto, Masahito Yoshii, Chihiro Ohmori, Masahiro Nomura, Alexander Schnase, Makoto Toda, Hiromitsu Suzuki, Taihei Shimada, Keigo Hara, Katsushi Hasegawa
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 12, Iss 4, p 041001 (2009)
In the rapid cycling synchrotron (RCS) of the Japan Proton Accelerator Research Complex (J-PARC), the longitudinal painting is important to alleviate the space-charge effects. It is known that the momentum offset injection and applying the second har
Externí odkaz:
https://doaj.org/article/d2d420bbb1cf4e24be296581407b0e2f
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 11, Iss 7, p 072001 (2008)
The dual-harmonic operation, in which the accelerating cavities are driven by the superposition of the fundamental and the second harmonic rf voltage, is useful for acceleration of the ultrahigh intensity proton beam in the rapid cycling synchrotron
Externí odkaz:
https://doaj.org/article/0295d1ea1781477eb82e4bb6faae5142
Autor:
Fumihiko Tamura, Sami G. Tantawi
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 5, Iss 6, p 062001 (2002)
We describe concepts for high power semiconductor rf switches, designed to handle signals at X-band with power level near 100 MW. We describe an abstract design methodology and derive a general scaling law for these switches. We also present a design
Externí odkaz:
https://doaj.org/article/11e4315912c1486e81d72d48b3270b4d
Design and actual performance of J-PARC 3 GeV rapid cycling synchrotron for high-intensity operation
Autor:
Kazami Yamamoto, Michikazu Kinsho, Naoki Hayashi, Pranab Kumar Saha, Fumihiko Tamura, Masanobu Yamamoto, Norio Tani, Tomohiro Takayanagi, Junichiro Kamiya, Yoshihiro Shobuda, Masahiro Yoshimoto, Hiroyuki Harada, Hiroki Takahashi, Yasuhiro Watanabe, Kota Okabe, Masahiro Nomura, Taihei Shimada, Takamitsu Nakanoya, Ayato Ono, Katsuhiro Moriya, Yoshio Yamazaki, Kazuaki Suganuma, Kosuke Fujirai, Nobuhiro Kikuzawa, Shin-Ichiro Meigo, Motoki Ooi, Shuichiro Hatakeyama, Tomohito Togashi, Kaoru Wada, Hideaki Hotchi, Masahito Yoshii, Chihiro Ohmori, Takeshi Toyama, Kenichirou Satou, Yoshiro Irie, Tomoaki Ueno, Koki Horino, Toru Yanagibashi, Riuji Saeki, Atsushi Sato, Osamu Takeda, Masato Kawase, Takahiro Suzuki, Kazuhiko Watanabe, Tatsuya Ishiyama, Shinpei Fukuta, Yuki Sawabe, Yuichi Ito, Yuko Kato, Kazuo Hasegawa, Hiromitsu Suzuki, Fumiaki Noda
Publikováno v:
Journal of Nuclear Science and Technology. 59:1174-1205
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2d1f64b812e8c81c1790d4476523c4a4
https://doi.org/10.1080/00223131.2022.2038301
https://doi.org/10.1080/00223131.2022.2038301