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Performance of the ALICE VZERO system

Abstract : ALICE is an LHC experiment devoted to the study of strongly interacting matter in proton--proton, proton--nucleus and nucleus--nucleus collisions at ultra-relativistic energies. The ALICE VZERO system, made of two scintillator arrays at asymmetric positions, one on each side of the interaction point, plays a central role in ALICE. In addition to its core function as a trigger, the VZERO system is used to monitor LHC beam conditions, to reject beam-induced backgrounds and to measure basic physics quantities such as luminosity, particle multiplicity, centrality and event plane direction in nucleus-nucleus collisions. After describing the VZERO system, this publication presents its performance over more than four years of operation at the LHC.
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Contributor : Emmanuelle Vernay <>
Submitted on : Friday, June 14, 2013 - 10:34:37 AM
Last modification on : Thursday, February 25, 2021 - 10:58:20 AM

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E. Abbas, N. Arbor, G. Conesa Balbastre, J. Faivre, C. Furget, et al.. Performance of the ALICE VZERO system. Journal of Instrumentation, IOP Publishing, 2013, 8, pp.P10016. ⟨10.1088/1748-0221/8/10/P10016⟩. ⟨in2p3-00834081⟩



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