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TY - CONF AU - Li, Y. AU - Guan, X. AU - Liu, X.Y. AU - Wang, X.W. AU - Xing, Q.Z. AU - Yang, Y. AU - Yao, H.J. AU - Ye, W.B. AU - Zheng, S.X. ED - Liu, Lin ED - Byrd, John M. ED - Neuenschwander, Regis T. ED - Picoreti, Renan ED - Schaa, Volker R. W. TI - Uniformization of the Transverse Beam Profile with Nonlinear Magnet J2 - Proc. of IPAC2021, Campinas, SP, Brazil, 24-28 May 2021 CY - Campinas, SP, Brazil T2 - International Particle Accelerator Conference T3 - 12 LA - english AB - The beam generated after slow extraction of the synchrotron is always not uniform and asymmetrical in transverse distribution. In practice, radiation therapy or radiation irradiation requires a high degree of uniformity of beam spot. Therefore, it is necessary to adjust the beam distribution with a nonlinear magnet and other elements on the transport line from synchrotron ring to beam target station. Nonlinear magnet has high requirements on beam quality. Before passing through the nonlinear magnet field, the beam center can be adjusted by taking advantage of the gradient change distribution of the nonlinear magnet’s transverse field map to achieve uniform distribution at the target station. As an example, we use the parameters of heavy ions of XiPAF (Xi’an 200MeV Proton Application Facility) to simulate the beam transport from synchrotron ring to beam target station. PB - JACoW Publishing CP - Geneva, Switzerland SP - 4413 EP - 4416 KW - target KW - HOM KW - synchrotron KW - radiation KW - extraction DA - 2021/08 PY - 2021 SN - 2673-5490 SN - 978-3-95450-214-1 DO - doi:10.18429/JACoW-IPAC2021-THPAB318 UR - https://jacow.org/ipac2021/papers/thpab318.pdf ER -