Fumihiko Tamura

J-GLOBAL         Last updated: Sep 3, 2015 at 14:15
 
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Name
Fumihiko Tamura
E-mail
fumihiko.tamuraj-parc.jp
Affiliation
Japan Atomic Energy Agency

Published Papers

 
M. Nomura, T. Shimada, F. Tamura, M. Yamamoto, K. Hara, K. Hasegawa, C. Ohmori, K. Takata, M. Toda, M. Yoshii, A. Schnase
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment   749 84-89   Jun 2014
We employ Magnetic Alloy (MA) core loaded RF cavities for the J-PARC synchrotrons to achieve a high field gradient. The MA core has a laminated structure of 18 μm thick ribbon layers. We have been developing high shunt impedance MA cores to prepar...
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
Physical Review Special Topics - Accelerators and Beams   16    Nov 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 c...
Fumihiko Tamura, Chihiro Ohmori, Masanobu Yamamoto, Masahito Yoshii, Alexander Schnase, Masahiro Nomura, Makoto Toda, Taihei Shimada, Katsushi Hasegawa, Keigo Hara
Physical Review Special Topics - Accelerators and Beams   16    May 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 ac...
H. Hotchi, H. Harada, N. Hayashi, M. Kinsho, P. K. Saha, Y. Shobuda, F. Tamura, K. Yamamoto, M. Yamamoto, M. Yoshimoto, Y. Irie
Physical Review Special Topics - Accelerators and Beams   15    Apr 2012
The 3-GeV rapid cycling synchrotron (RCS) of the Japan Proton Accelerator Research Complex was commissioned in October 2007. Via the initial beam tuning and a series of underlying beam studies with low-intensity beams, since December 2009, we have...
M. Nomura, A. Schnase, T. Shimada, F. Tamura, M. Yamamoto, K. Hara, K. Hasegawa, C. Ohmori, M. Toda, M. Yoshii
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment   668 83-87   Mar 2012
We employ Magnetic Alloy core loaded RF cavities for the Japan Proton Accelerator Research Complex synchrotrons to achieve a high accelerating voltage. To improve the electrical insulation of MA cores, we conceptualized a convenient way to find an...