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TY - CONF AU - Xu, W. AU - Ben-Zvi, I. AU - Gao, Y. AU - Hahn, H. AU - McIntyre, G.T. AU - Porqueddu, R. AU - Ptitsyn, V. AU - Smith, K.S. AU - Than, R. AU - Tuozzolo, J.L. AU - Xu, C. 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 - Ridge Waveguide HOM Damping Scheme for High Current SRF Cavity J2 - Proc. of IPAC2016, Busan, Korea, May 8-13, 2016 C1 - Busan, Korea T2 - International Particle Accelerator Conference T3 - 7 LA - english AB - HOM damping is a challenge for high-current SRF linacs possibly generating HOM power at a level of 10 KW per cavity. A rectangular waveguide used as a natural high pass filter is a good option as high power, large spectrum HOM damper. However, its size is too big, causing a big challenge for the cooling and cryogenic system. A reliable, compact HOM damping scheme using a ridged waveguide is being developed to damp high power (> 10 kW), large spectrum HOMs ( up to 40 GHz) that may be generated in the 647 MHz 5-cell eRHIC ERL SRF linac. The size of a ridged waveguide is less than a quarter of the regular waveguide, which alleviates the thermal issue. This paper presents the design of a ridged waveguide and estimated HOM damping results using a ridged waveguide. The thermal or cooling design of the ridged waveguide will also be addressed. PB - JACoW CP - Geneva, Switzerland SP - 2367 EP - 2369 KW - HOM KW - cavity KW - linac KW - damping KW - SRF DA - 2016/06 PY - 2016 SN - 978-3-95450-147-2 DO - 10.18429/JACoW-IPAC2016-WEPMR042 UR - http://jacow.org/ipac2016/papers/wepmr042.pdf ER -