The Time-of-Flight Detector for the ALICE experiment

Despina Hatzifotiadou


    For the identification of particles in the momentum range 0.5 to 2.5 GeV/c the ALICE experiment uses a Time Of Flight array. The detectors used are Multigap Resistive Plate Chambers (MRPC) with 50 ps time resolution. The whole array covers a ~150 marea and consists of detector elements in the form of MRPC strips. To cope with the high multiplicity expected for heavy ion collisions, the TOF array is segmented - pickup pads of 2.5 x 3.5 cm2 are used. Thus the whole system will have 160000 read-out channels. Here we present results of the R&D program of the last 3 years, which led to the design of the final TOF system for ALICE.