A novel technique for the measurement of the avalanche fluctuation of gaseous detectors
Makoto Kobayashi, Tomohisa Ogawa, Tomohiko Kawaguchi, Keisuke Fujii,, Takahiro Fusayasu, Katsumasa Ikematsu, Yukihiro Kato, Shin-ichi Kawada,, Takeshi Matsuda, Ronald Dean Settles, Akira Sugiyama, Tohru Takahashi,, Junping Tian, Takashi Watanabe, Ryo Yonamine
TL;DR
This paper introduces a quick, simple UV laser-based method for measuring avalanche fluctuations in gaseous detectors, effective at low gas gains, demonstrated on GEM stacks with various gas mixtures.
Contribution
It presents a novel, efficient technique for avalanche fluctuation measurement applicable to gaseous detectors, requiring minimal data collection time.
Findings
Effective measurement of avalanche fluctuations demonstrated
Applicable to low gas gain conditions
Validated on GEM stacks with different gas mixtures
Abstract
We have developed a novel technique for the measurement of the avalanche fluctuation of gaseous detectors using a UV laser. The technique is simple and requires a short data-taking time of about ten minutes. Furthermore, it is applicable for relatively low gas gains. Our experimental setup as well as the measurement principle, and the results obtained with a stack of Gas Electron Multipliers (GEMs) operated in several gas mixtures are presented.
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