New prototype multi-gap resistive plate chambers with long strips
/ Authors
Yongjie Sun, Chao Li, M. Shao, B. Gui, Yan-E. Zhao, H. Chen, Zhongbin Xu, L. Ruan, G. Lin, X. Wang
and 15 more authors
Yuanqing Wang, Zebo Tang, G. Eppley, P. Fachini, M. Kohl, J. Liu, W. Llope, R. Majka, T. Nussbaun, E. Ramberg, T. Sakuma, F. Simon, N. Smirnov, B. Surrow, D. Underwood
/ 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 cm 2 and ten 250mm-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. & 2008 Elsevier B.V. All rights reserved.
Journal: Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment