JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
TY - CONF
AU - Van der Veken, F.F.
AU - Bruce, R.
AU - Hostettler, M.
AU - Mirarchi, D.
AU - Redaelli, S.
ED - Zimmermann, Frank
ED - Tanaka, Hitoshi
ED - Sudmuang, Porntip
ED - Klysubun, Prapong
ED - Sunwong, Prapaiwan
ED - Chanwattana, Thakonwat
ED - Petit-Jean-Genaz, Christine
ED - Schaa, Volker R.W.
TI - LHC Beam Collimation During Extended β*-Levelling in Run 3
J2 - Proc. of IPAC2022, Bangkok, Thailand, 12-17 June 2022
CY - Bangkok, Thailand
T2 - International Particle Accelerator Conference
T3 - 13
LA - english
AB - During the third operational Run of the Large Hadron Collider at CERN, starting in 2022, the bunch population will be increased to unprecedented levels requiring to deploy β^{*}-levelling of the luminosity over a wide range of values to cope with the limitations imposed by event pile-up at the experiments and heat load on the triplets induced by collision debris. During this levelling, both beam optics and orbit change in various areas of the ring, in particular around the high-luminosity experiments, where several collimators are installed. This requires adapting the collimation system settings adequately, in particular for the tertiary collimators (TCTs) that protect the inner-triplet magnets. To this end, two strategies are considered: keeping collimators at fixed physical openings while shifting their centres following the beam orbit, or varying also the collimator openings. The latter strategy is planned when the larger optics range will be deployed. In this paper, we investigate several loss scenarios at the TCTs in different steps of the levelling, and present the proposed collimator settings during Run 3.
PB - JACoW Publishing
CP - Geneva, Switzerland
SP - 2138
EP - 2141
KW - collimation
KW - luminosity
KW - operation
KW - experiment
KW - optics
DA - 2022/07
PY - 2022
SN - 2673-5490
SN - 978-3-95450-227-1
DO - doi:10.18429/JACoW-IPAC2022-WEPOTK034
UR - https://jacow.org/ipac2022/papers/wepotk034.pdf
ER -