Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Yamamoto, Masanobu; Nomura, Masahiro; Shimada, Taihei; Tamura, Fumihiko; Hara, Keigo*; Hasegawa, Katsushi*; Omori, Chihiro*; Toda, Makoto*; Yoshii, Masahito*
Proceedings of 7th International Particle Accelerator Conference (IPAC '16) (Internet), p.3443 - 3445, 2016/06
The J-PARC RCS accelerates 2 bunches at the harmonic number 2. The major Fourier component of the beam current is even harmonics. However, the odd harmonics grow under some conditions even though they are very small amplitude at the beginning. Particle tracking simulation suggests that the displacement and the deformation of the bunch are caused by the odd harmonics, it is synchronized with the potential distortion, and it results in the beam instability. We describe the particle tracking simulation results for the odd harmonic beam loading effect in the RCS.
Tamura, Fumihiko; Yamamoto, Masanobu; Yoshii, Masahito*; Schnase, A.*; Omori, Chihiro*; Uesugi, Tomonori*
Proceedings of 8th European Particle Accelerator Conference (EPAC 2002), p.2106 - 2108, 2002/00
We present the concept and the design of the high-speed digital RF feedforward systems for beam loading compensation in the synchrotrons of JAERI-KEK Joint Project (JKJ). JKJ synchrotrons are high intensity proton synchrotrons at the energy of 3 and 50 GeV, in which beam loading compensation systems are necessary. Beam loading compensation is to be realized by full-digital RF feedforward systems. We describe the implementation details of the feedforward systems. The system consists of a down-converter, digital filters, and an up-converter. We present two possible implementations of the filters; one uses ASIC filter chips and the other uses FPGA.
Hu, L.*; Akino, Noboru; Ebisawa, Noboru; Honda, Atsushi; Ito, Takao; Kawai, Mikito; Kazawa, Minoru; Kuriyama, Masaaki; Kusaka, Makoto*; Mogaki, Kazuhiko; et al.
JAERI-Tech 99-057, 16 Pages, 1999/08
no abstracts in English
Kuriyama, Masaaki; Akino, Noboru; Ebisawa, Noboru; Grisham, L. R.*; Hikida, Shigenori*; Honda, Atsushi; Ito, Takao; Kawai, Mikito; Kazawa, Minoru; Kusaka, Makoto*; et al.
Proceedings of the 18th IEEE/NPSS Symposium on Fusion Engineering (SOFE '99), p.133 - 136, 1999/00
no abstracts in English
M.A.Chernogubovsky*; Sugimoto, Masayoshi
JAERI-Research 98-041, 29 Pages, 1998/08
JAERI-Research-98-041.pdf:1.32MB
no abstracts in English
M.Chernogubovsky*
Proc. of 11th Symp. on Accelerator Sci. and Technol., p.221 - 223, 1997/00
no abstracts in English
M.Chernogubovsky*
Proc. of 22nd Linear Accelerator Meeting in Japan, p.164 - 166, 1997/00
no abstracts in English
ion sourceOkumura, Yoshikazu; Hanada, Masaya; Inoue, Takashi; Mizuno, Makoto; Ohara, Yoshihiro; Suzuki, Yasuo*; Tanaka, Hideki*; Tanaka, M.*; Watanabe, Kazuhiro
Review of Scientific Instruments, 63(4), p.2708 - 2710, 1992/04
Times Cited Count：24 Percentile：86.57(Instruments & Instrumentation)no abstracts in English
