Cosmic ray tests of a GEM-based TPC prototype operated in Ar-CF4-isobutane gas mixtures

被引:14
作者
Kobayashi, M. [1 ]
Yonamine, R. [2 ]
Tomioka, T. [3 ]
Aoza, A. [4 ]
Bito, H. [3 ]
Fujii, K. [1 ]
Higashi, T. [4 ]
Hiramatsu, K. [5 ]
Ikematsu, K. [1 ]
Ishikawa, A. [4 ]
Kato, Y. [5 ]
Kuroiwa, H. [4 ]
Matsuda, T. [1 ]
Nitoh, O. [3 ]
Ohta, H. [3 ]
Sakai, K. [3 ]
Settles, R. D. [6 ]
Sugiyama, A. [4 ]
Tsuji, H. [4 ]
Watanabe, T. [7 ]
Yamaoka, H. [1 ]
Yazu, T. [5 ]
机构
[1] High Energy Accelerator Res Org KEK, Tsukuba, Ibaraki 3050801, Japan
[2] Grad Univ Adv Studies, KEK, Tsukuba, Ibaraki 3050801, Japan
[3] Tokyo Univ Agr & Technol, Koganei, Tokyo 1848588, Japan
[4] Saga Univ, Saga 8408502, Japan
[5] Kinki Univ, Higashiosaka, Osaka 5778502, Japan
[6] Max Planck Inst Phys & Astrophys, DE-80805 Munich, Germany
[7] Kogakuin Univ, Hachioji, Tokyo 1920015, Japan
关键词
TPC; ILC; GEM; CF4; Diffusion; Spatial resolution; LINEAR COLLIDER EXPERIMENT; MICROMEGAS TPC; MAGNETIC-FIELDS; ELECTRON-DRIFT; CF4; GAS; DETECTORS;
D O I
10.1016/j.nima.2011.02.042
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
Argon with an admixture of CF4 is expected to be a good candidate for the gas mixture to be used for a time projection chamber (TPC) in the future linear collider experiment because of its small transverse diffusion of drift electrons especially under a strong magnetic field. In order to confirm the superiority of this gas mixture over conventional TPC gases we carried out cosmic ray tests using a GEM-based TPC operated mostly in Ar-CF4-isobutane mixtures under 0-1 T axial magnetic fields. The measured gas properties such as gas gain and transverse diffusion constant as well as the observed spatial resolution are presented. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码:37 / 47
页数:11
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