Author/Authors :
Akindinov، نويسنده , , A.N. and Alici، نويسنده , , A. and Anselmo، نويسنده , , F. and Antonioli، نويسنده , , P. and Basile، نويسنده , , M. and Cara Romeo، نويسنده , , G. and Cifarelli، نويسنده , , L. and Cindolo، نويسنده , , F. and Cosenza، نويسنده , , F. and DʹAntone، نويسنده , , I. and De Caro، نويسنده , , Philip A. and De Pasquale، نويسنده , , S. and Di Bartolomeo، نويسنده , , A. and Fusco Girard، نويسنده , , M. and Golovin، نويسنده ,
Abstract :
For the identification of particles in the momentum range 0.5– 2.5 GeV / c , the ALICE experiment uses a Time Of Flight array consisting of Multigap Resistive Plate Chambers (MRPC) in the form of long strips. The design of the detector elements is as follows : double stack MRPCs with glass resistive plates and 5 gas gaps of 250 μ m per stack. The latest results on the performance of these MRPCs are presented. Typical values of time resolution σ are better than 50 ps, with an efficiency of 99.9 % and a long, more than 1.5 kV, streamer-free plateau.
Keywords :
ALICE , MRPC , Time of flight , Particle identification , Time resolution , Resistive plate chambers
