The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF AU - Verdú-Andrés, S. AU - Ben-Zvi, I. AU - Burt, G. AU - Calaga, R. AU - Capatina, O. AU - Huque, N.A. AU - Li, Z. AU - McEwen, E.A. AU - Mitchell, J.A. AU - Park, H. AU - Powers, T. AU - Ratti, A. AU - Wu, Q. AU - Xiao, B.P. ED - Boland, Mark ED - Tanaka, Hitoshi ED - Button, David ED - Dowd, Rohan ED - Schaa, Volker RW ED - Tan, Eugene TI - Cryogenic RF Performance of Double-Quarter Wave Cavities Equipped with HOM Filters J2 - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019 CY - Melbourne, Australia T2 - International Particle Accelerator Conference T3 - 10 LA - english AB - Crab cavities are one of the several components included in the luminosity upgrade of the Large Hadron Collider (HL-LHC). The cavities have to provide a nominal deflecting kick of 3.4 MV per cavity while the cryogenic load per cavity stays below 5 W. Cold RF tests confirmed the required performances in bare cavities, with several cavities exceeding the required voltage by more than 50%. However, the first tests of a Double-Quarter Wave (DQW) cavity with one out of three HOM filters did not reach the required voltage. The present paper describes the studies and tests conducted on a DQW cavity with HOM filter to understand the limiting factor. The recipe to meet the performance specification and exceed the voltage requirement by more than 35% is discussed. PB - JACoW Publishing CP - Geneva, Switzerland SP - 3043 EP - 3046 KW - cavity KW - HOM KW - operation KW - cryogenics KW - SRF DA - 2019/06 PY - 2019 SN - 978-3-95450-208-0 DO - DOI: 10.18429/JACoW-IPAC2019-WEPRB098 UR - http://jacow.org/ipac2019/papers/weprb098.pdf ER -