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TY - CPAPER AU - Zhai, J.Y. AU - Belomestnykh, S.A. AU - Gao, J. AU - Huang, T.M. AU - Liu, Z.C. AU - Mi, Z.H. AU - Pagani, C. AU - Sha, P. AU - Sun, Y. AU - Zheng, H.J. TI - Preliminary Conceptual Design of the CEPC SRF System J2 - Proc. of International Conference on RF Superconductivity (SRF2015), Whistler, BC, Canada, Sept. 13-18, 2015 AB - CEPC is a circular electron positron collider operating at 240 GeV center-of-mass energy as a Higgs factory, recently proposed by the Chinese high energy physics community. The CEPC study group, together with the FCC and ILC community, will contribute to the development of future high energy colliders and experiments which will ensure that the elementary particle physics remain a vibrant and exciting field of fundamental investigation for decades to come. Superconducting RF (SRF) system is one of the most important technical systems of CEPC and is a key to achieving its design energy and luminosity. It will dominate, with the associated RF power source and cryogenic system, the overall machine cost, efficiency and performance. The CEPC SRF system will be one of the largest and most powerful SRF accelerator installations in the world. The preliminary conceptual design of the CEPC SRF system is summarized in this paper, including the machine layout, key parameter choices and some critical issues such as HOM damping, emphasizing the new technology requirement and R&D focuses. PB - JACoW CY - Geneva, Switzerland SP - 272 EP - 275 KW - cavity KW - HOM KW - SRF KW - collider KW - booster DA - 2015/12 PY - 2015 SN - 978-3-95450-178-6 DO - 10.18429/JACoW-SRF2015-MOPB070 UR - http://srf2015.vrws.de/papers/mopb070.pdf ER -