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TY - CONF AU - Zheng, H.J. AU - Meng, F. AU - Sha, P. AU - Zhai, J.Y. ED - Michel, Peter ED - Arnold, André ED - Schaa, Volker RW TI - CEPC HOM Coupler R&D J2 - Proc. of SRF2019, Dresden, Germany, 30 June-05 July 2019 CY - Dresden, Germany T2 - International Conference on RF Superconductivity T3 - 19 LA - english AB - The conceptual design report (CDR) for the Circular Electron Positron Collider (CEPC) has been published in September 2018. In this talk, the CDR design and prototyping of the HOM coupler for the CEPC Collider ring cavity will be given. Each cavity has two detachable coaxial HOM couplers mounted on the cavity beam pipe with HOM power handling capacity of 1 kW. A double notch coupler is chosen due to its wide bandwidth for the fundamental mode. A prototype of this HOM coupler and a coaxial line test bench have been fabricated and tested under low power. The low power test results agree well with the simulation results. The high power test was also carried out in room temperature. PB - JACoW Publishing CP - Geneva, Switzerland SP - 1050 EP - 1054 KW - HOM KW - cavity KW - collider KW - SRF KW - cryomodule DA - 2019/08 PY - 2019 SN - "" SN - 978-3-95450-211-0 DO - doi:10.18429/JACoW-SRF2019-THP070 UR - http://jacow.org/srf2019/papers/thp070.pdf ER -