Upgrading the COSINE-100 experiment for enhanced sensitivity to low-mass dark matter detection

被引：0

作者：

Lee, Doohyeok ^{[1
]}

Cho, Jae Young ^{[1
]}

Ha, Chang Hyon ^{[2
]}

Jeon, Eunju ^{[3
]}

Kim, Hongjoo ^{[1
]}

Kim, Jinyoung ^{[2
]}

Kim, Kyungwon ^{[3
]}

Kim, Sunghyun ^{[3
]}

Kim, Sun Kee ^{[4
]}

Kim, Won Kyung ^{[5
]}

Kim, Yeongduk ^{[3
,5
]}

Ko, Young Ju ^{[6
]}

Lee, Hyunseok ^{[5
]}

Lee, Hyun Su ^{[3
,5
]}

Lee, In Soo ^{[3
]}

Lee, Jaison ^{[3
]}

Lee, Seo Hyun ^{[5
]}

Lee, Seung Mok ^{[4
]}

Maruyama, Reina H. ^{[7
,8
]}

Park, Jong-Chul ^{[9
,10
]}

Park, Kangsoon ^{[3
]}

Park, Kihong ^{[3
]}

Park, Se Dong ^{[1
]}

Seo, Kyungmin ^{[3
]}

Son, Min Ki ^{[9
,10
]}

Yu, Gyun Ho ^{[3
]}

机构：

[1] Kyungpook Natl Univ, Dept Phys, Daegu, South Korea

[2] Chung Ang Univ, Dept Phys, Seoul, South Korea

[3] Inst for Basic Sci Korea, Ctr Underground Phys, Daejeon, South Korea

[4] Seoul Natl Univ Univ, Dept Phys, Seoul 08826, South Korea

[5] Univ Sci & Technol, IBS Sch, Daejeon, South Korea

[6] Jeju Natl Univ, Dept Phys, Jeju, South Korea

[7] Yale Univ, Dept Phys, New Haven, CT USA

[8] Yale Univ, Wright Lab, New Haven, CT USA

[9] Chungnam Natl Univ, Dept Phys, Daejeon, South Korea

[10] Chungnam Natl Univ, IQS, Daejeon, South Korea

来源：

COMMUNICATIONS PHYSICS | 2025年 / 8卷 / 01期

关键词：

ANNUAL MODULATION; SEARCH;

D O I：

10.1038/s42005-025-02067-4

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The DAMA/LIBRA experiment has reported an annual modulation signal in NaI(Tl) detectors, which has been interpreted as a possible indication of dark matter interactions. However, this claim remains controversial, as several experiments have tested the modulation signal using NaI(Tl) detectors. Among them, the COSINE-100 experiment, specifically designed to test DAMA/LIBRA's claim, observed no significant signal, revealing a more than 3 sigma discrepancy with DAMA/LIBRA's results. Here we present COSINE-100U, an upgraded version of the experiment, which aims to expand the search for dark matter interactions by improving light collection efficiency and reducing background noise. The detector, consisting of eight NaI(Tl) crystals with a total mass of 99.1 kg, has been relocated to Yemilab, a new underground facility in Korea, and features direct PMT-coupling technology to enhance sensitivity. These upgrades significantly improve the experiment's ability to probe low-mass dark matter candidates, contributing to the ongoing global effort to clarify the nature of dark matter.

引用

页数：10

共 62 条

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