R. Ohkubo
KEK
6 Papers
23 Citations
R. Ohkubo is an academic researcher from KEK. The author has contributed to research in topics: Muonium & Superconducting magnet. The author has an hindex of 3, co-authored 6 publications.
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Papers
Superconducting curved transport solenoid with dipole coils for charge selection of the muon beam
Patrick Strasser,Yutaka Ikedo,Yasuhiro Miyake,Koichiro Shimomura,Naritoshi Kawamura,Kusuo Nishiyama,Shunsuke Makimura,Hiroshi Fujimori,Akihiro Koda,Jumpei Nakamura,Takashi Nagatomo,T. Adachi,Amba Datt Pant,Toru Ogitsu,Yasuhiro Makida,Minoru Yoshida,Ken-ichi Sasaki,Takahiro Okamura,Hirokatsu Ohhata,Tatsushi Nakamoto,Ryutaro Okada,R. Ohkubo,Akira Yamamoto,Wataru Higemoto,T.U. Itoh,Katsuhiko Ishida,K. Nakahara +26 more
TL;DR: The Super-Omega muon beamline at the J-PARC Muon Science Facility (MUSE) is now under construction in the experimental hall No. 2 of the Materials and Life Science Facility building as mentioned in this paper.
12
Measurement of Muonium Hyperfine Splitting at J-PARC
K. S. Tanaka,Masaharu Aoki,Hiromi Iinuma,Yutaka Ikedo,K. Ishida,Masahiko Iwasaki,Y. Ueno,R. Ohkubo,Toru Ogitsu,Ryosuke Kadono,O. Kamigaito,Naritoshi Kawamura,D. Kawall,S. Kanda,Kenya M. Kubo,Tatsuya Kume,A. Koda,K. M. Kojima,Nagahiro Saito,N. Sakamoto,K. Sasaki,Koichiro Shimomura,Michinaka Sugano,D. Tomono,Akihiro Toyoda,H. A. Torii,Eiko Torikai,Kanetada Nagamine,Kusuo Nishiyama,Patrick Strasser,Y. Fukao,Y. Fujiwara,Y. Matsuda,Tsutomu Mibe,Yasuhiro Miyake,M. Yoshida +35 more
- 26 Mar 2014
TL;DR: J-PARC K. Ueno2, Y. Miyake2, T. Okubo2, R. Kadono2, O. Kamigaito3, N. Kawamura2, D. Kawall8, S. Kubo7, A. Koda2, K. Kojima2 as mentioned in this paper, N. Saito2, M. Matsuda1, T., M. Mibe2, E. Torii
10
Development of a Superconducting Solenoid for Hyperfine Structure Measurement of Muonium at the J-PARC
Ken-ichi Sasaki,Michinaka Sugano,R. Ohkubo,Hiromi Iinuma,Toru Ogitsu,Norihito Saito,Koichiro Shimomura,Akira Yamamoto +7 more
TL;DR: In this paper, a superconducting solenoid for a new Muonium HyperFine Structure measurement at J-PARC is developed, and error fields caused by the main coil misalignment were evaluated for designing super-conducting shim coils.
3
Cryogenic Design of a Superconducting Solenoid for Muonium Hyperfine Structure Measurement
Michinaka Sugano,Ken-ichi Sasaki,R. Ohkubo,T. Kume,Nobuhiro Kimura,Ryutaro Okada,Takahiro Okamura,Koichiro Shimomura,Norihito Saito,Toru Ogitsu,Akira Yamamoto +10 more
TL;DR: In this paper, a superconducting solenoid magnet with field homogeneity as high as 1 ppm was used for precise measurement of the muonium hyperfine structure (MuHFS).
2
Status and prospects of the muonium experiment at j-parc
H. A. Torii,K. S. Tanaka,M. Tajima,T. Mizutani,Yasuhiro H. Matsuda,Y. Fukao,Hiromi Iinuma,Yutaka Ikedo,Ryosuke Kadono,Naritoshi Kawamura,Akihiro Koda,Kenji Kojima,Tsutomu Mibe,Yasuhiro Miyake,Kanetada Nagamine,Kusuo Nishiyama,R. Ohkubo,Toru Ogitsu,Norihito Saito,Ken-ichi Sasaki,Koichiro Shimomura,Patrick Strasser,Michinaka Sugano,Akihiro Toyoda,K. Ueno,Akira Yamamoto,Minoru Yoshida,K. Ishida,M. Iwasaki,O. Kamigaito,S. Kanda,D. Tomono,Y. Ueno,Kenya M. Kubo,Masaharu Aoki,Eiko Torikai,D. Kawall +36 more
- 17 Dec 2014
TL;DR: In this paper, a microwave spectroscopy experiment of muonium atoms is being prepared at J-PARC in Japan, aiming at an improved relative precision at a level of 10-8 in determination of the muonic magnetic moment.