Design and performance of a high-pressure xenon gas TPC as a prototype for a large-scale neutrinoless double-beta decay search

被引：2

作者：

Ban, S. ^{[1
]}

Hirose, M. ^{[1
]}

Ichikawa, A. K. ^{[1
]}

Iwashita, Y. ^{[2
]}

Kikawa, T. ^{[1
]}

Minamino, A. ^{[3
]}

Miuchi, K. ^{[4
]}

Nakadaira, T. ^{[5
]}

Nakajima, Y. ^{[6
,7
]}

Nakamura, K. D. ^{[4
]}

Nakamura, K. Z. ^{[1
]}

Nakaya, T. ^{[1
]}

Obara, S. ^{[1
,9
]}

Sakashita, K. ^{[5
]}

Sekiya, H. ^{[6
,7
]}

Sugashima, B. ^{[1
]}

Tanaka, S. ^{[1
]}

Ueshima, K. ^{[8
]}

Yoshida, M. ^{[1
]}

机构：

[1] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan

[2] Kyoto Univ, Adv Res Ctr Beam Sci, Kyoto 6110011, Japan

[3] Yokohama Natl Univ, Fac Engn, Yokohama, Kanagawa 2408501, Japan

[4] Kobe Univ, Dept Phys, Kobe, Hyogo 6578501, Japan

[5] High Energy Accelerator Org KEK, Inst Particle & Nucl Studies, Tsukuba, Ibaraki 3050801, Japan

[6] Univ Tokyo, Inst Cosm Ray Res, Kamioka Observ, Hida 5061205, Japan

[7] Univ Tokyo, Kavli Inst Phys & Math Universe WPI, Kashiwa, Chiba 2778568, Japan

[8] Tohoku Univ, Res Ctr Neutrino Sci, Sendai, Miyagi 9808578, Japan

[9] Tohoku Univ, Frontier Res Inst Interdisciplinary Sci, Sendai, Miyagi 9808578, Japan

来源：

PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS | 2020年 / 2020卷 / 03期

基金：

日本学术振兴会;

关键词：

D O I：

10.1093/ptep/ptaa030

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A high-pressure xenon gas time projection chamber, with a unique cellular readout structure based on electroluminescence, has been developed for a large-scale neutrinoless double-beta decay search. In order to evaluate the detector performance and validate its design, a 180 L size prototype is being constructed and its commissioning with partial detector has been performed. The obtained energy resolution at 4.0 bar is 1.73 +/- 0.07% (FWHM) at 511 keV. The energy resolution at the Xe-136 neutrinoless double-beta decay Q-value is estimated to be between 0.79 and 1.52% (FWHM) by extrapolation. Reconstructed event topologies show patterns peculiar to the track endpoint that can be used to distinguish 0v beta beta signals from gamma-ray backgrounds.

引用

页数：20

共 47 条

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