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TY - CONF AU - Jiang, T.C. AU - Guo, H. AU - He, Y. AU - Li, C.L. AU - Liu, L.B. AU - Tan, T. AU - Xiong, P.R. AU - You, Z.M. AU - Yue, W.M. AU - Zhang, S.H. AU - Zhang, S.X. ED - Koscielniak, Shane ED - Satogata, Todd ED - Schaa, Volker RW ED - Thomson, Jana TI - Development of a Superconducting Double-Spoke Cavity at IMP J2 - Proc. of IPAC2018, Vancouver, BC, Canada, April 29-May 4, 2018 C1 - Vancouver, BC, Canada T2 - International Particle Accelerator Conference T3 - 9 LA - english AB - Superconducting multi-spoke cavities are well-known optional choice for acceleration of heavy ions in medium velocity regimes. The paper describes the design, fabrication and test results of the superconducting double-spoke cavity developed at IMP. After Buffered Chemical Polishing and High pressure Rinsing, one cavity has undergone high gradient RF testing at 4 K in the Vertical Test Stand. We present measurements of the quality factor as a function of accelerating field and maximum field on the surface. Accelerating gradient of more than 15 MV/m is reached with peak electric field of 61 MV/m, and peak magnetic field of 118 mT. PB - JACoW Publishing CP - Geneva, Switzerland SP - 2869 EP - 2871 DA - 2018/06 PY - 2018 SN - 978-3-95450-184-7 DO - 10.18429/JACoW-IPAC2018-WEPML078 UR - http://jacow.org/ipac2018/papers/wepml078.pdf ER -