The MRPC-based ALICE Time-Of-Flight detector: status and performance

Details The MRPC-based ALICE Time-Of-Flight detector: status and performance The MRPC-based ALICE Time-Of-Flight detector: status and performance

2012-03-27

arxiv.org/abs/1203.5976v1

Physics

Instrumentation and Detectors

4 pages, 6 figures

Scientific paper

The large Time-Of-Flight (TOF) array is one of the main detectors devoted to charged hadron identification in the mid-rapidity region of the ALICE experiment at the LHC. It allows separation among pions, kaons and protons up to a few GeV/c, covering the full azimuthal angle and -0.9 < eta < 0.9. The TOF exploits the innovative MRPC technology capable of an intrinsic time resolution better than 50 ps with an efficiency close to 100% and a large operational plateau; the full array consists of 1593 MRPCs covering a cylindrical surface of 141 m2. The TOF detector has been efficiently taking data since the first pp collisions recorded in ALICE in December 2009. In this report, the status of the TOF detector and the performance achieved for both pp and Pb--Pb collisions are described.

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