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TY - CONF AU - Xu, W. AU - Ben-Zvi, I. AU - Hahn, H. AU - McIntyre, G.T. AU - Pai, C. AU - Porqueddu, R. AU - Smith, K.S. AU - Tuozzolo, J.E. AU - Tuozzolo, J.L. AU - Zaltsman, A. ED - Petit-Jean-Genaz, Christine ED - Kim, Dong Eon ED - Kim, Kyung Sook ED - Ko, In Soo ED - Schaa, Volker RW TI - RF and Mechanical Design of 647 MHz 5-Cell BNL4 Cavity for eRHIC ERL J2 - Proc. of IPAC2016, Busan, Korea, May 8-13, 2016 C1 - Busan, Korea T2 - International Particle Accelerator Conference T3 - 7 LA - english AB - A 647 MHz 5-cell cavity has been designed for the envisioned EIC at BNL which is configured as an eRHIC ERL with a FFAG lattice to achieve the necessary e-p luminosity. The cavity was optimized to allow propagation of all HOMs out of the cavity for high BBU threshold current and low HOM power (loss factor). eRHIC will collide the electron beam over a wide energy range with protons from 40 GeV to 250 GeV, which requires the cavity to tune up to 170 kHz at 2 K. This poses a true challenge to the mechanical design of the SRF cavity. This paper will present the RF and mechanical designs of the 647 MHz 5-cell cavity, and status of the cavity fabrication will be addressed as well. PB - JACoW CP - Geneva, Switzerland SP - 2364 EP - 2366 KW - cavity KW - electron KW - HOM KW - linac KW - SRF DA - 2016/06 PY - 2016 SN - 978-3-95450-147-2 DO - 10.18429/JACoW-IPAC2016-WEPMR041 UR - http://jacow.org/ipac2016/papers/wepmr041.pdf ER -