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Beam instrumentation at the 1 MW Proton beam of J-PARC RCS

Yamamoto, Kazami  ; Hayashi, Naoki ; Okabe, Kota ; Harada, Hiroyuki ; Saha, P. K.  ; Yoshimoto, Masahiro ; Hatakeyama, Shuichiro; Hotchi, Hideaki ; Hashimoto, Yoshinori*; Toyama, Takeshi*

Rapid Cycling Synchrotron (RCS) of Japan Proton Accelerator Complex (J-PARC) is providing more than 300 kW of proton beam to Material and Life science Facility (MLF) and Main Ring (MR). Last summer shutdown, a new ion source was installed to increase output power to 1 MW. In order to achieve reliable operation of 1 MW, we need to reduce beam loss as well. Beam quality of such higher output power is also important for users. Therefore we developed new monitors that can measure the halo with higher accuracy. We present beam monitor systems for these purposes.

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