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TY - CONF AU - Wang, D. AU - Chi, Y.L. AU - Gao, J. AU - Gong, D.J. AU - Meng, C. AU - Pei, G. AU - Zhang, J.R. ED - Schaa, Volker RW ED - Pei, Guoxi ED - Chin, Yong Ho ED - Fu, Shinian ED - Zhao, Ning TI - Design Study on CEPC Positron Damping Ring System J2 - Proc. of LINAC2018, Beijing, China, 16-21 September 2018 CY - Beijing, China T2 - Linear Accelerator Conference T3 - 29 LA - english AB - The primary purpose of CEPC damping ring is to reduce the transverse phase spaces of positron beam to suitably small value at the beginning of linac and hence reduce the beam loss in the booster. Before damping ring, an energy spread compression structure is designed to match the RF acceptance of damping ring. A longitudinal bunch length control is also necessary to meet the energy spread requirement in the linac by a bunch compressor system after the damping ring. Both designs for damping ring and energy/bunch compressors are discussed in this paper. PB - JACoW Publishing CP - Geneva, Switzerland SP - 672 EP - 675 KW - damping KW - injection KW - linac KW - positron KW - emittance DA - 2019/01 PY - 2019 SN - 2226-0366 SN - 978-3-95450-194-6 DO - DOI: 10.18429/JACoW-LINAC2018-THPO001 UR - http://jacow.org/linac2018/papers/thpo001.pdf ER -