Performance of multigap resistive plate chambers with pure Freon 134a

被引:0
作者
Doroud, K. [2 ]
Hatzifotiadou, D. [3 ]
Kim, D. W. [1 ,2 ]
Kim, J. S. [1 ]
Kim, M. M. [1 ,2 ]
Seo, J. [2 ,4 ]
Williams, M. C. S. [3 ]
Zichichi, A. [3 ,5 ]
机构
[1] Gangneung Wonju Natl Univ, Dept Phys, Kangnung, South Korea
[2] World Lab, Geneva, Switzerland
[3] Sezione Ist Nazl Fis Nucl, Bologna, Italy
[4] Konkuk Univ, Dept Phys, Seoul, South Korea
[5] Dipartimento Fis Univ, Bologna, Italy
基金
新加坡国家研究基金会;
关键词
Resistive plate chambers; MRPC; ALICE; Time of flight; SF6; Freon; 134a; Multigap; GAS-MIXTURE;
D O I
10.1016/j.nima.2010.11.056
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
The performance of Multigap Resistive Plate Chambers (MRPCs) with pure Freon 134a was investigated. Two types of MRPCs with different number of gaps and different gap width have been studied; one with 10 gaps of 250 mu m and the other with 24 gaps of 160 mu m. From the beam tests performed at CERN, the time resolution of the MRPCs flushed with pure Freon has been found to be the same as when SF6 was added to Freon. The 10 gap MRPC has a time resolution better than 50 ps and the 24 gap MRPC has a resolution of 21 ps, at full efficiency and with no streamers. With pure Freon, the streamers start to develop at a lower electric field. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码:106 / 110
页数:5
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