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Saha, P. K.; Noda, Fumiaki*; Irie, Yoshiro; Hotchi, Hideaki; Takayanagi, Tomohiro; Hayashi, Naoki; Machida, Shinji*; Sakai, Izumi*
Proceedings of 2005 Particle Accelerator Conference (PAC '05) (CD-ROM), p.3739 - 3741, 2005/00
The RCS(rapid cycling synchrotron) of J-PARC(Japan proton accelerator research complex) acts as an injector to the main ring as well as a high-power beam for the spallation neutron source at a repetition rate of 25 Hz, where at present the injection and the extraction beam energy are chosen to be 0.181 GeV and 3.0 GeV, respectively. The present work concerns on the present design and calculations for the injection-dump line of the RCS, which includes, (1) an accurate aperture list of all elements taking into account a wide range of the betatron tune, effect of changing injection modes, multiple trajectories of different particles after the charge-exchange foil(like H0 from the H- and H- beam itself)and (2) an accurate estimation of the uncontrolled beam losses especially from the H0-excited states, multiple coulomb scattering at the charge-exchange foil and also the lorentz stripping loss at the septum magnets so as to optimize them concerning mainly the radiation issues as well as for the hands-on maintenance.
Takayanagi, Tomohiro; Irie, Yoshiro; Kamiya, Junichiro; Watanabe, Masao; Watanabe, Yasuhiro; Ueno, Tomoaki*; Noda, Fumiaki*; Saha, P. K.; Sakai, Izumi*; Kawakubo, Toshimichi*
Proceedings of 2005 Particle Accelerator Conference (PAC '05) (CD-ROM), p.1048 - 1050, 2005/00
The pulse bending magnets for the injection system of the 3-GeV RCS in J-PARC has been designed. The injection system consists of the pulsed bending magnets, which are four horizontal bending magnets (shift bump) and four horizontal painting magnets (h-paint bump) for the injection bump orbit, and two vertical painting magnets (v-paint magnet). The injection beam energy and the extraction beam power are 400 MeV and 1 MW at 25 Hz repetition rate, respectively. The acceptance to include the injection beam, the painting beam and the circulating beam at the shift bump points is a 388 mm wide and a 242 mm high. The shift bump has been designed using a 3D magnetic analysis code, which accomplished less than 0.4 % field deviation under 0.26 T excitation level.
Sakai, Fumiaki; ; ; Anzo, Tomonori;
PNC TN8470 96-006, 55 Pages, 1996/11
no abstracts in English
Kaya, Akira; Ouchi, Yoshifusa; ; *; Sone, Toru; Sakai, Fumiaki;
PNC TN841 80-30, , 1980/05
no abstracts in English
Kaya, Akira; Ouchi, Yoshifusa; *; ; Sone, Toru; *; *; Sakai, Fumiaki
PNC TN841 80-04, 73 Pages, 1980/01
no abstracts in English
Kaya, Akira; Ouchi, Yoshifusa; Sakai, Fumiaki
Bunseki Kagaku, 28(7), p.401 - 405, 1979/00
Kaya, Akira; Ouchi, Yoshifusa; Sakai, Fumiaki; *; Tayama, Toshimitsu; *; ; *
PNC TN841 78-58, , 1978/10
no abstracts in English
Kaya, Akira; *; *; Sakai, Fumiaki; Ouchi, Yoshifusa
PNC TN841 78-40, 11 Pages, 1978/06
no abstracts in English
*; Ouchi, Yoshifusa; *; Sakai, Fumiaki; ; *; *; *
PNC TN841 77-54, , 1977/10
no abstracts in English
*; Ouchi, Yoshifusa; *; Kondo, Isao*; Sakai, Fumiaki;
PNC TN841 77-41, 16 Pages, 1977/08
no abstracts in English
*; *; Sakai, Fumiaki; Ouchi, Yoshifusa
PNC TN841 77-10, 15 Pages, 1977/03
no abstracts in English
*; *; Kondo, Isao*; Sakai, Fumiaki; Ouchi, Yoshifusa
PNC TN841 76-22, 14 Pages, 1976/06
no abstracts in English
*; *; Ouchi, Yoshifusa; *; Kondo, Isao*; Sakai, Fumiaki; ; *
PNC TN841 76-04, 55 Pages, 1976/01
no abstracts in English
*; *; Sakai, Fumiaki; Motoyama, Shigeji; Ouchi, Yoshifusa
PNC TN841 76-03, 14 Pages, 1976/01
no abstracts in English
*; Sakai, Fumiaki; Ouchi, Yoshifusa; ; Motoyama, Shigeji
PNC TN841 74-47, 11 Pages, 1974/07
no abstracts in English
*; Ouchi, Yoshifusa; Sakai, Fumiaki; ; Motoyama, Shigeji
PNC TN841 74-45, 17 Pages, 1974/07
no abstracts in English
raysYamazaki, Takumi; Takada, Chie; Nakamura, Keisuke; Sagawa, Naoki; Hoshi, Katsuya; Nakagawa, Takahiro; Takimoto, Misaki; Tanimura, Yoshihiko*; Takahashi, Fumiaki; Momose, Takumaro; et al.
no journal, ,
no abstracts in English
