摘要
多气隙电阻板室 (MRPC)飞行时间探测器模型从 2 0 0 3年 2月开始在美国布鲁克海文国家实验室(BNL)的AGS束流上顺利完成了为期 10周的测试 (共 2 8个MRPC模块 16 8路读出 ,其中 12个模块即 72个读出道配置了读出电子学 ) .实验表明工作气体的选择对MRPC的工作性能有很大影响 .测量了几种不同成分的混合气体 (A) 90 %C2 H2 F4+5 %iso C4H10 +5 %SF6、(B) 95 3%C2 H2 F4+4 7%iso C4H10 及 (C) 10 0 %C2 H2 F4下MRPC探测效率和时间分辨等特性的变化 。
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% C 2H 2F 4+5%iso-C 4H 10+5%SF 6,95.3%C 2H 2F 4+ 4.7%iso-C 4H 10 and 100% C 2H 2F 4 were tested. The results on detection efficiency, time resolution and streamer pro- bability are presented.
出处
《高能物理与核物理》
CSCD
北大核心
2004年第7期733-737,共5页
High Energy Physics and Nuclear Physics
基金
国家自然科学基金 ( 10 3 75 0 62 )资助~~
