Study of Performance of MRPC with Different Gas Mixtures

SHAO Ming; CHEN Hong-Fang; LI Cheng; WANG Xiao-Lian; HUANG Sheng-Li; LI Jie; RUAN Li-Juan; WU Jian; XU Zi-Zong; WANG Zhao-Min

Chinese Physics C> 2004, Vol. 28> Issue(7) : 733-737

Study of Performance of MRPC with Different Gas Mixtures

Department of Modern Physics,University of Science and Technology of China,Hefei 230026,China2 Rice University,Houston,TX 77005-1892,USA3 University of Texas,Austin,TX 78712,USA

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Abstract：
A prototype with 28 modules of 168-channel multi-gap resistive plate chamber (MRPC) time-of-flight system for the STAR experiment at RHIC was built, and its 12 modules (72 readout channels) equipped with read out electronics were tested for 10 weeks at the AGS, BNL from February 2002. The working gas mixtures have significant influence on the performance of MRPC. Several gas mixtures such as 90% C₂H₂F₄+5%iso-C₄H₁₀+5%SF₆,95.3%C₂H₂F₄+4.7%iso-C₄H₁₀ and 100% C₂H₂F₄ were tested. The results on detection efficiency, time resolution and streamer probability are presented.

References

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SHAO Ming, CHEN Hong-Fang, LI Cheng, WANG Xiao-Lian, HUANG Sheng-Li, LI Jie, RUAN Li-Juan, WU Jian, XU Zi-Zong and WANG Zhao-Min. Study of Performance of MRPC with Different Gas Mixtures[J]. Chinese Physics C, 2004, 28(7): 733-737.

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Received: 2003-10-27
Revised: 1900-01-01

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