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TY - CONF AU - Alekou, A. AU - Appleby, R.B. AU - Bartosik, H. AU - Calaga, R. AU - Carlà, M. AU - Papaphilippou, Y. ED - Schaa, Volker RW TI - SPS Long Term Stability Studies in the Presence of Crab Cavities and High Order Multipoles J2 - Proc. of HB2018, Daejeon, Korea, 17-22 June 2018 C1 - Daejeon, Korea T2 - ICFA Advanced Beam Dynamics Workshop T3 - 61 LA - english AB - A local Crab Cavity (CC) scheme will recover the head-on collisions at the IP of the High Luminosity LHC (HL-LHC), which aims to increase the LHC luminosity by a factor of 3-10. The tight space constraints at the CC location result in axially non-symmetric cavity designs that introduce high order multipole CC components. The impact of these high order components on the long term stability of the beam in the SPS machine, where two prototype crab cavities are presently installed in the CERN SPS to perform tests with beam, is presented. Furthermore, the Dynamic Aperture is studied in the presence of the SPS errors. Future plans are discussed. PB - JACoW Publishing CP - Geneva, Switzerland SP - 284 EP - 286 KW - multipole KW - cavity KW - optics KW - luminosity KW - sextupole DA - 2018/07 PY - 2018 SN - 978-3-95450-202-8 DO - 10.18429/JACoW-HB2018-WEP2PO008 UR - http://jacow.org/hb2018/papers/wep2po008.pdf ER -