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TY - CONF AU - Mitchell, J.A. AU - Apsimon, R. AU - Burt, G. AU - Calaga, R. AU - Macpherson, A. AU - Montesinos, E. AU - Silva, S.D. AU - Tutte, A.R.J. AU - Xiao, B. P. ED - Schaa, Volker RW ED - Petit-Jean-Genaz, Christine ED - Ko, In Soo ED - Kim, Dong Eon ED - Kim, Kyung Sook TI - LHC Crab Cavity Coupler Test Boxes J2 - Proc. of IPAC2016, Busan, Korea, May 8-13, 2016 C1 - Busan, Korea T2 - International Particle Accelerator Conference T3 - 7 LA - english AB - The LHC double quarter wave (DQW) crab cavities have two different types of Higher Order Mode (HOM) couplers in addition to a fundamental power coupler (FPC). The FPC requires conditioning, so to achieve this we have designed a radio-frequency (RF) quarter wave resonator to provide high transmission between two opposing FPCs. For the HOM couplers we must ensure that the stop-band filter is positioned at the cavity frequency and that peak transmission occurs at the same frequencies as the strongest HOMs. We have designed two test boxes which preserve the cavity spectral response in order to test the couplers. PB - JACoW CP - Geneva, Switzerland SP - 2248 EP - 2250 KW - HOM KW - cavity KW - luminosity KW - operation KW - higher-order-mode DA - 2016/06 PY - 2016 SN - 978-3-95450-147-2 DO - 10.18429/JACoW-IPAC2016-WEPMB058 UR - http://jacow.org/ipac2016/papers/wepmb058.pdf ER -