paper

Performance of the ALICE VZERO system

arXiv:1306.3130 · doi:10.1088/1748-0221/8/10/P10016

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.

20 pages, 10 captioned figures, 1 table, authors from page 15, published version, figures at http://aliceinfo.cern.ch/ArtSubmission/node/595

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