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TY - CONF AU - Hu, S. AU - Fan, K. ED - Schaa, Volker RW ED - Ji, Daheng ED - Li, Lu ED - Zhao, Ning TI - Radiation Effects Study for Beam Losses on the Electrostatic Deflector in HUST SCC250 J2 - Proc. of SAP2017, Jishou, China, 28-30 August 2017 C1 - Jishou, China T2 - Symposium on Accelerator Physics T3 - 13 LA - english AB - China has payed comprehensive attention to the study of proton therapy in recent years. Radiation effects induced by beam losses in compact, high energy superconducting cyclotrons are being taken into crucial considerations. The proton beam is extracted out of HUST SCC250 superconducting cyclotron by electrostatic deflectors. The fierce impinging between proton beam and the deflector septum is the main cause of beam losses, which will bring about radiation effects leading to activations in devices and coil quenching. This paper presents the simulation result of radiation effects between beam and septum by utilizing Geant4 code based on Monte Carlo method. The energy deposition of beam losses is figured. Meanwhile, the yields and energy distributions of secondary particles are investigated. The result focused on radiation effects will provide us with valuable implications for the design of this superconducting cyclotron. PB - JACoW CP - Geneva, Switzerland SP - 73 EP - 75 KW - ion KW - proton KW - radiation KW - septum KW - ion-effects DA - 2018/02 PY - 2018 SN - 978-3-95450-199-1 DO - 10.18429/JACoW-SAP2017-MOPH21 UR - http://jacow.org/sap2017/papers/moph21.pdf ER -