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 RHIC. These long read-out strip MRPCs (LMRPCs) have an active area of 87.0 x 17.0 cm2 and ten 250 um-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.
@article{arxiv.0805.2459,
title = {New Prototype Multi-gap Resistive Plate Chambers with Long Strips},
author = {Y. J. Sun and C. Li and M. Shao and B. Gui and Y. E. Zhao and H. F. Chen and Z. B. Xu and L. J. Ruan and G. J. Lin and X. Wang and Y. Wang and Z. B. Tang and G. Eppley and P. Fachini and M. Kohl and J. Liu and W. J. Llope and R. Majka and T. Nussbaun and E. Ramberg and T. Sakuma and F. Simon and N. Smirnov and B. Surrow and D. Underwood},
journal= {arXiv preprint arXiv:0805.2459},
year = {2008}
}
Comments
9 pages, 13 figures, submitted to Nucl. Instr. and Meth. A