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May 22 – 28, 2011
Centre Bonlieu
Europe/Zurich timezone

Evaluation of the identification efficiency of the ALICE HMPID detector in p-p collisions at √s = 7 TeV by means of V0 decays

Not scheduled
Théâtre National (Centre Bonlieu)

Théâtre National

Centre Bonlieu

Board: 143
Poster Experiments upgrade, future facilities and instrumentations


Dr Francesco Barile (Universita degli Studi di Bari-Universita e INFN)


The ALICE experiment, dedicated to the study of heavy-ion collisions at LHC energies, features a high-quality particle identification system, based on the the Inner Tracking System (ITS), the Time-Projection-Chamber (TPC), the Time-of-Flight (TOF) and the HMPID. The ALICE-HMPID (High Momentum Particle Identification detector) has been designed to identify charged pions and kaons in the range 1< p <3 GeV/c and protons in the range 2< p<5 GeV/c, in a reduced region of the phase space. It consists of seven identical proximity focusing RICH (Ring Imaging Cherenkov) counters, with a total active area of 11 m2, which exploit the technology of large area MWPCs equipped with Cesium Iodide (CsI) photo-cathodes for imaging the Cherenkov light emitted by a liquid C6F14 radiator. Since November 2009 ALICE is collecting p-p and Pb-Pb collisions data at LHC. A study of the particle identification efficiency of the HMPID has been carried out with samples of protons and pions coming from reconstructed V0 (Λ/anti-Λ, K0S) decays in p-p collisions at √s = 7 TeV.

Primary author

Dr Francesco Barile (Universita degli Studi di Bari-Universita e INFN)

Presentation materials