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Physics > Instrumentation and Detectors

arXiv:1008.5068 (physics)
[Submitted on 30 Aug 2010 (v1), last revised 21 Mar 2023 (this version, v4)]

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

Authors:M. Kobayashi, R. Yonamine, T. Tomioka, A. Aoza, H. Bito, K. Fujii, T. Higashi, K. Hiramatsu, K. Ikematsu, A. Ishikawa, Y. Kato, H. Kuroiwa, T. Matsuda, O. Nitoh, H. Ohta, K. Sakai, R. D. Settles, A. Sugiyama, H. Tsuji, T. Watanabe, H. Yamaoka, T. Yazu
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Abstract: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.
Comments: A supplemental material (Addendum to be published in Nucl. Instrum. Methods Phys. Res. A) was added at the end of the manuscript to help readers understand the formulas in Appendix B. No changes in the conclusion. 24 pages, including 21 figures
Subjects: Instrumentation and Detectors (physics.ins-det); High Energy Physics - Experiment (hep-ex)
Cite as: arXiv:1008.5068 [physics.ins-det]
  (or arXiv:1008.5068v4 [physics.ins-det] for this version)
  https://doi.org/10.48550/arXiv.1008.5068
Journal reference: Nucl.Instrum.Meth.A641:37-47,2011
Related DOI: https://doi.org/10.1016/j.nima.2011.02.042

Submission history

From: Makoto Kobayashi [view email]
[v1] Mon, 30 Aug 2010 12:27:28 UTC (1,215 KB)
[v2] Sun, 13 Feb 2011 11:23:47 UTC (1,158 KB)
[v3] Wed, 7 Oct 2020 11:14:41 UTC (1,120 KB)
[v4] Tue, 21 Mar 2023 12:42:53 UTC (1,129 KB)
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