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TY - CONF AU - Wei, S.M. AU - An, S. AU - Guan, L.L. AU - Lv, Y.L. ED - Conradie, Lowry ED - De Villiers, John Garrett ED - Schaa, Volker RW TI - A 50 MeV Proton Beam Line Design J2 - Proc. of Cyclotrons2019, Cape Town, South Africa, 23-27 September 2019 CY - Cape Town, South Africa T2 - International Conference on Cyclotrons and their Applications T3 - 22 LA - english AB - The cyclotron Center at the China Institute of Atomic Energy (CIAE) is now developing a medium-energy proton irradiation device that provides a proton beam with an energy range of 30 MeV to 50 MeV to simulate a space proton radiation environment, which has a significant impact on spacecraft. A beam transport line is designed for irradiation effect study based on the 50 MeV compact cyclotron, which requires continuous adjustment of the beam energy and the beam spot on the target requires high uniformity. The proton beam extracted from the cyclotron is adjusted to the energy required by using the degrader, then the proton beam is bended and focused. In order to obtain uniform large-diameter beam spot on the target, a wobbling magnet is installed on the beam line to uniformly sweep the proton beam on the target and finally obtain the proton beam with energy of 30 MeV - 50 MeV, current of 10 uA and beam spot of 20 cm * 20 cm on the target. PB - JACoW Publishing CP - Geneva, Switzerland SP - 45 EP - 47 KW - proton KW - cyclotron KW - target KW - quadrupole KW - radiation DA - 2020/06 PY - 2020 SN - 978-3-95450-205-9 DO - doi:10.18429/JACoW-Cyclotrons2019-MOP010 UR - http://jacow.org/cyclotrons2019/papers/mop010.pdf ER -