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arXiv · 1701.03931

Electroluminescence collection cell as a readout for a high energy resolution Xenon gas TPC

S. Ban·K. D. Nakamura·S. Akiyama·M. Hirose·A. K. Ichikawa·Y. Ishiyama·A. Minamino·K. Miuchi·T. Nakaya·H. Sekiya·S. Tanaka·K. Ueshima·S. Yanagita
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Abstract

AXEL is a high pressure xenon gas TPC detector being developed for neutrinoless double-beta decay search. We use the proportional scintillation mode with a new electroluminescence light detection system to achieve high energy resolution in a large detector. The detector also has tracking capabilities, which enable significant background rejection. To demonstrate our detection technique, we constructed a 10L prototype detector filled with up to 10bar xenon gas. The FWHM energy resolution obtained by the prototype detector is 4.0 $\pm$ 0.30 $\%$ at 122 keV, which corresponds to 0.9 ~ 2.0 % when extrapolated to the Q value of the $0νββ$ decay of $^{136}$Xe.

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S. Ban, K. D. Nakamura, S. Akiyama, M. Hirose, A. K. Ichikawa, Y. Ishiyama, A. Minamino, K. Miuchi, T. Nakaya, H. Sekiya, S. Tanaka, K. Ueshima, S. Yanagita. 2017-11-24. Electroluminescence collection cell as a readout for a high energy resolution Xenon gas TPC. https://doi.org/10.1016/j.nima.2017.09.015

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