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TY - CONF AU - Salvachua, B. AU - Baudrenghien, P. AU - Bruce, R. AU - Garcia, H. AU - Hermes, P.D. AU - Jackson, S. AU - Jaussi, M. AU - Kwee-Hinzmann, R. AU - Mereghetti, A. AU - Mirarchi, D. AU - Redaelli, S. AU - Timko, H. AU - Valentino, G. AU - Valloni, A. ED - Petit-Jean-Genaz, Christine ED - Kim, Dong Eon ED - Kim, Kyung Sook ED - Ko, In Soo ED - Schaa, Volker RW TI - Validation of Off-momentum Cleaning Performance of the LHC Collimation System 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 collimation system is designed to provide effective cleaning against losses coming from off-momentum particles, either due to un-captured beam or to an unexpected RF frequency change. For this reason the LHC is equipped with a hierarchy of collimators in IR3: primary, secondary and absorber collimators. After every collimator alignment or change of machine configuration the off-momentum cleaning efficiency is validated with loss maps at low intensity. We describe here the improved technique used in 2015 to generate such loss maps without completely dumping the beam into the collimators. The achieved performance of the collimation system for momentum cleaning is reviewed. PB - JACoW CP - Geneva, Switzerland SP - 2427 EP - 2429 KW - proton KW - collimation KW - beam-losses KW - injection KW - alignment DA - 2016/06 PY - 2016 SN - 978-3-95450-147-2 DO - 10.18429/JACoW-IPAC2016-WEPMW007 UR - http://jacow.org/ipac2016/papers/wepmw007.pdf ER -