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TY - CONF AU - Yamamoto, K. AU - Harada, H. AU - Hotchi, H. AU - Kamiya, J. AU - Miki, N. AU - Saha, P.K. AU - Takayanagi, T. AU - Takeda, O. AU - Yoshimoto, M. ED - Schaa, Volker RW ED - Arduini, Gianluigi ED - Pranke, Juliana ED - Seidel, Mike ED - Lindroos, Mats TI - New Injection Scheme of J-PARC Rapid Cycling Synchrotron J2 - Proc. of IPAC2017, Copenhagen, Denmark, 14â19 May, 2017 C1 - Copenhagen, Denmark T2 - International Particle Accelerator Conference T3 - 8 LA - english AB - The 3-GeV Rapid Cycling Synchrotron (RCS) of Japan Proton Accelerator Research Complex (J-PARC) aims to deliver 1-MW proton beam to the neutron target and Main Ring synchrotron (MR). Present beam power of RCS is up to 500-kW and the higher radiation doses were concentrated in the injection area. These activations were caused by the interaction between the foil and the beam. To reduce the worker dose near the injection point, we have studied new design of the injection scheme to secure enough space for radiation shielding and bellows. In the new system, two of four injection pulse bump magnets are replaced and we are able to ensure the additional 500 mm space at the injection foil . PB - JACoW CP - Geneva, Switzerland SP - 579 EP - 581 KW - injection KW - proton KW - operation KW - synchrotron KW - shielding DA - 2017/05 PY - 2017 SN - 978-3-95450-182-3 DO - 10.18429/JACoW-IPAC2017-MOPIK035 UR - http://jacow.org/ipac2017/papers/mopik035.pdf ER -