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arXiv · 1404.0982

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

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

The spatial resolution along the pad-row direction was measured with a GEM-based TPC prototype for the future linear collider experiment in order to understand its performance for tracks with finite projected angles with respect to the pad-row normal. The degradation of the resolution due to the angular pad effect was confirmed to be consistent with the prediction of a simple calculation taking into account the cluster-size distribution and the avalanche fluctuation.

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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. 2014-04-03. Cosmic ray tests of a GEM-based TPC prototype operated in Ar-CF4-isobutane gas mixtures: II. https://doi.org/10.1016/j.nima.2014.08.027

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