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Report No.
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Upgrade design of the bump system in the J-PARC 3-GeV RCS

Takayanagi, Tomohiro  ; Hayashi, Naoki ; Togashi, Tomohito; Ueno, Tomoaki; Watanabe, Yasuhiro ; Kinsho, Michikazu 

In the bump system of the J-PARC (Japan Proton Accelerator Research Complex) 3-GeV RCS (Rapid Cycling Synchrotron), the performance improvement according to upgrade of the LINAC (Linear Accelerator) to 400 MeV beam is planned. Both the increase of the power supply capacity and the improvement of the setting accuracy of the output current are required. Moreover, the operating point that the vibration of the current ripple resonates with betatron tune was clarified. Therefore, the present level of the current ripple is necessary to decrease to half or less. The development of the pulse power supply system that solves the problems of the current ripple is required. The contents both the improvement plane of the bump system performance and the upgrade system of the power supply are explained.

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