Author :
Chen, H. ; Dong, X. ; Eppley, G. ; Geurts, F. ; Huang, S. ; Li, C. ; Liu, H. ; Llope, W.J. ; Ruan, L. ; Shao, M. ; Wang, X. ; Wang, Z. ; Wu, J. ; Xu, Z. ; Zhang, Z.
Abstract :
Multi-gap resistive plate chamber is a new detector technology. It was first developed by the LHC-ALICE group at CERN in the late 1990s. The MRPC is a ideal detector for time-of-flight measurement due to its small gaps and works in the proportional (avalanche) mode. The beam test of single module result shows that MRPC tuning resolution is better than 70ps and the detection efficiency is higher than 95%. It is also radiation hard. A time-of-flight tray with 28 on MRPC modules. was tested at AGS. The average timing resolution is about 75ps (including the 4cm of beam spread) and detection efficiency is better than 95%. This tray has been installed on STAR detector system in October 2002 and used on the 200GeV d+Au experiment.
Keywords :
cosmic ray apparatus; proportional counters; time of flight spectrometers; 200 GeV; STAR detector system; detection efficiency; multigap resistive plate chamber; proportional mode; proton-meson separation; radiation hard; single module; time-of-flight measurement; time-of-flight tray; tuning resolution; Detectors; Electrons; Mesons; Protons; Testing; Timing;
