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TY - CONF AU - Wiesner, C. AU - Bartmann, W. AU - Bracco, C. AU - Calviani, M. AU - Carlier, E. AU - Ducimetière, L. AU - Frankl, M.I. AU - Fraser, M.A. AU - Gilardoni, S.S. AU - Goddard, B. AU - Kramer, T. AU - Lechner, A. AU - Magnin, N. AU - Perillo-Marcone, A. AU - Polzin, T. AU - Renner, E. AU - Senaj, V. ED - Koscielniak, Shane ED - Satogata, Todd ED - Schaa, Volker RW ED - Thomson, Jana TI - Upgrade of the Dilution System for HL-LHC J2 - Proc. of IPAC2018, Vancouver, BC, Canada, April 29-May 4, 2018 C1 - Vancouver, BC, Canada T2 - International Particle Accelerator Conference T3 - 9 LA - english AB - The LHC Beam Dump System is one of the most critical systems for reliable and safe operation of the LHC. A dedicated dilution system is required to sweep the beam over the front face of the graphite dump core in order to reduce the deposited energy density. The High Luminosity Large Hadron Collider (HL-LHC) project foresees to increase the total beam intensity in the ring by nearly a factor of two, resulting in a correspondingly higher energy deposition in the dump core. In this paper, the beam sweep pattern and energy deposition for the case of normal dilution as well as for the relevant failure cases are presented. The implications as well as possible mitigations and upgrade measures for the dilution system, such as decreasing the pulse-generator voltage, adding two additional kickers, and implementing a retrigger system, are discussed. PB - JACoW Publishing CP - Geneva, Switzerland SP - 261 EP - 264 KW - kicker KW - operation KW - Windows KW - damping KW - simulation DA - 2018/06 PY - 2018 SN - 978-3-95450-184-7 DO - 10.18429/JACoW-IPAC2018-MOPMF062 UR - http://jacow.org/ipac2018/papers/mopmf062.pdf ER -