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Journal Articles Journal of Instrumentation Year : 2013

Performance of the ALICE VZERO system

E. Abbas
  • Function : Author
C. Roy
Laurent Aphecetche
Guillaume Batigne
B. Erazmus
  • Function : Author
  • PersonId : 1178907
  • IdRef : 033726485
Magali Estienne
Marie Germain
Gines Martinez Garcia
Philippe Pillot
Alexandre Shabetai
Diego Stocco
B. Cheynis
Maxime Guilbaud


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.

Dates and versions

in2p3-00834081 , version 1 (14-06-2013)



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