Performance of the ALICE VZERO system

Submission Date: 
13/07/2013
Related Public Paper: 
Article Information
Submission Form
System: 
p-p
System: 
Pb-Pb
System: 
detector performance
Energy: 
2.76 TeV
Energy: 
7 TeV
Energy: 
N/A
Abstract Plain Text: 

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.