Performance of the RPC-based ALICE muon trigger system at the LHC
- The forward muon spectrometer of ALICE (A Large Ion Collider Experiment) is equipped with a trigger system made of four planes of Resistive Plate Chambers (RPC), arranged in two stations with two planes each, for a total area of about 140 m2. The system provides single and di-muon triggers with suitable transverse momentum selection, optimised for the physics of quarkonia and open heavy flavour. In the first two years of data-taking at the Large Hadron Collider (2010 and 2011) the 72 RPCs were operated in highly saturated avalanche mode in both pp and Pb-Pb collisions. The integrated charge was about 1.3 mC/cm2 on average and 3.5 mC/cm2 for the most exposed detectors. This paper describes two main results. The first result is the determination of the RPC performance, with particular focus on the stability of the main detector parameters such as efficiency, dark current, and dark rate. The second result is the measurement of the muon trigger performance in Pb-Pb collisions at √sNN = 2.76 TeV, in terms of the reliability and stability of the trigger decision logic.
Author: | Francesco BossùORCiD, Martino GagliardiORCiD, Massimiliano MarchisoneORCiD |
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URN: | urn:nbn:de:hebis:30:3-742363 |
DOI: | https://doi.org/10.1088/1748-0221/7/12/T12002 |
ISSN: | 1748-0221 |
ArXiv Id: | http://arxiv.org/abs/1211.1948 |
Parent Title (English): | Journal of instrumentation |
Publisher: | IOP Publishing |
Place of publication: | Bristol [u.a.] |
Document Type: | Article |
Language: | English |
Year of Completion: | 2012 |
Year of first Publication: | 2012 |
Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
Granting Institution: | Johann Wolfgang Goethe-Universität |
Creating Corporation: | ALICE (Körperschaft) |
Release Date: | 2024/09/16 |
Tag: | Large detector systems for particle and astroparticle physics; Muon spectrometers; Trigger detectors |
Volume: | 7 |
Issue: | T12002 |
Page Number: | 13 |
HeBIS-PPN: | 522319912 |
Institutes: | Physik / Physik |
Informatik und Mathematik / Informatik | |
Wissenschaftliche Zentren und koordinierte Programme / Frankfurt Institute for Advanced Studies (FIAS) | |
Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
Sammlungen: | Universitätspublikationen |
Licence (German): | Creative Commons - Namensnennung 3.0 |