Author/Authors :
Sun، نويسنده , , Y.J. and Li، نويسنده , , C. and Shao، نويسنده , , M. W. Gui، نويسنده , , B. and Zhao، نويسنده , , Y.E. and Chen، نويسنده , , H.F. and Xu، نويسنده , , Z.B. and Ruan، نويسنده , , L.J. and Lin، نويسنده , , G.J. and Wang، نويسنده , , X. and Wang، نويسنده , , Y. and Tang، نويسنده , , Z.B. and Eppley، نويسنده , , G. and Fachini، نويسنده , , P. A. Kohl، نويسنده , , M. and Liu، نويسنده , , J. and Llope، نويسنده , , W.J. and Majka، نويسنده , , R. and Nussba، نويسنده ,
Abstract :
A new kind of Multi-gap Resistive Plate Chamber (MRPC) has been built for the large-area Muon Telescope Detector (MTD) for the STAR experiment at the Relativistic Heavy Ion Collider (RHIC). These long read-out strip Multi-gap Resistive Plate Chambers (LMRPCs) have an active area of 87.0×17.0 cm2 and ten 250 μm-thick gas gaps arranged as a double stack. Each read-out strip is 2.5 cm wide and 90 cm long. The signals are read-out at both ends of each strip. Cosmic ray tests indicate a time resolution of ∼70 ps and a detection efficiency of greater than 95%. Beam tests performed at T963 at Fermilab indicate a time resolution of 60–70 ps and a spatial resolution of ∼1 cm along the strip direction.
Keywords :
Multi-gap resistive plate chambers , Time resolution , Muon telescope detector , Time-of-flight
