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TY - CONF AU - Triantafyllou, N. AU - Antoniou, F. AU - Bartosik, H. AU - Baudrenghien, P. AU - Buffat, X. AU - Calaga, R. AU - Carver, L.R. AU - Mastoridis, T. AU - Papaphilippou, Y. AU - Wolski, A. ED - Liu, Lin ED - Byrd, John M. ED - Neuenschwander, Regis T. ED - Picoreti, Renan ED - Schaa, Volker R. W. TI - Investigation of Damping Effects of the Crab Cavity Noise Induced Emittance Growth J2 - Proc. of IPAC2021, Campinas, SP, Brazil, 24-28 May 2021 CY - Campinas, SP, Brazil T2 - International Particle Accelerator Conference T3 - 12 LA - english AB - Crab cavities will be installed at the two main interaction points (IP1 and IP5) of the High Luminosity LHC (HL-LHC) in order to minimize the geometric reduction of the luminosity due to the crossing angle. Two prototype crab cavities have been installed into the SPS machine and were tested with a proton beam in 2018, to study the expected emittance growth induced by RF noise. The measured emittance growth was found to be a factor 2-3 lower than predicted from the available analytical and computational models. Damping mechanisms from the transverse impedance, which is not included in the available theories, are studied as a possible explanation for the observed discrepancy. PB - JACoW Publishing CP - Geneva, Switzerland SP - 2054 EP - 2057 KW - emittance KW - simulation KW - impedance KW - cavity KW - experiment DA - 2021/08 PY - 2021 SN - 2673-5490 SN - 978-3-95450-214-1 DO - doi:10.18429/JACoW-IPAC2021-TUPAB256 UR - https://jacow.org/ipac2021/papers/tupab256.pdf ER -