Vacuum system for the 3-GeV RCS in J-PARC

Ogiwara, Norio; Kinsho, Michikazu; Kamiya, J.; Yamamoto, Kazami; Yoshimoto, Masahiro; Hikichi, Yusuke; Kanazawa, K.; Mio, Keigo; Takiyama, Y.; Suganuma, K.; Saitō, Yoshio

doi:10.1016/j.vacuum.2009.06.039

Cited by 17 publications

(2 citation statements)

References 14 publications

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“…In the RCS, the vacuum chambers have been designed such that their outgassing rates are sufficiently low to enable ultrahigh vacuum [13]. For example, the outgassing rate of the Ti bellows and ducts is approximately 10 À9 Pa m=s, while that of the ceramic chamber is approximately 10 À8 Pa m=s.…”

Section: Examination Of the Vacuum Propertiesmentioning

confidence: 99%

Localization of the large-angle foil-scattering beam loss caused by the multiturn charge-exchange injection

Kato

Yamamoto

Yoshimoto

et al. 2013

Phys. Rev. ST Accel. Beams

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In the 3 GeV rapid cycling synchrotron of the Japan Proton Accelerator Research Complex, significant losses were observed at the branching of the H 0 dump line and the beam position monitor that was inserted downstream of the H 0 dump branch duct. These losses were caused by the large-angle scattering of the injection and circulating beams at the charge-exchange foil. To realize high-power operation, these losses must be mitigated. Therefore, a new collimation system was developed and installed in October 2011. To efficiently optimize this system, the behavior of particles scattered by the foil and produced by the absorber were simulated, and the optimal position and angle of the absorber were investigated. During this process, an angle regulation method for the absorber was devised. An outline of this system, the angle regulation method for the absorber, and the performance of this new collimation system are described.

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Section: Examination Of the Vacuum Propertiesmentioning

confidence: 99%

Localization of the large-angle foil-scattering beam loss caused by the multiturn charge-exchange injection

Kato

Yamamoto

Yoshimoto

et al. 2013

Phys. Rev. ST Accel. Beams

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“…The Development of a Pirani Vacuum Gauge with a Platinum Wire in the J PARC 3-GeV Rapid Cycling Synchrotron Norio OGIWARA 1 , Yusuke HIKICHI 1 and Yoji YOSHINARI 2  1 J PARC Center, Japan Atomic Energy Agency, Tokai, Naka, Ibaraki 319 1195, Japan  2 Tokyo Electronics Co., Ltd., 1 3 4 Maeno cho, Itabashi, Tokyo 174 0063, Japan (Received October 29, 2009, Accepted January 12, 2010)…”

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confidence: 99%