Author/Authors :
Alici، نويسنده , , A. and Cara Romeo، نويسنده , , G. and Kim، نويسنده , , Jinsook and Hatzifotiadou، نويسنده , , D. and Sun، نويسنده , , Y. and Valenti، نويسنده , , G. and Williams، نويسنده , , M.C.S. and Yakorev، نويسنده , , D. and Zichichi، نويسنده , , A.، نويسنده ,
Abstract :
The selected device for the ALICE Time-of-Flight array is the Multigap Resistive Plate Chamber (MRPC). Previously we have tested this device at the Gamma Irradiation Facility (GIF) at CERN to evaluate the rate dependence; we have now performed additional tests using the final design of the MRPC and with a gas mixture free of hydrocarbons. We have measured the performance of the MRPC up to an equivalent flux of minimum ionizing muons of 2.5 kHz/cm2. We also present results from an aging test obtained by exposing two MRPC strips to the GIF source for a period of six months.
Keywords :
Multigap , GIF , aging , Rate capability , RPC
