Scholarlink

<p>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<i>σ</i> 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.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

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

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年4月4日

查看全文
  • Doohyeok Lee,
  • Jae Young Cho,
  • Chang Hyon Ha,
  • Eunju Jeon,
  • Hongjoo Kim,
  • Jinyoung Kim,
  • Kyungwon Kim,
  • SungHyun Kim,
  • Sun Kee Kim,
  • Won Kyung Kim,
  • Yeongduk Kim,
  • Young Ju Ko,
  • Hyunseok Lee,
  • Hyun Su Lee,
  • In Soo Lee,
  • Jaison Lee,
  • Seo Hyun Lee,
  • Seung Mok Lee,
  • Reina H. Maruyama,
  • Jong-Chul Park,
  • Kangsoon Park,
  • Kihong Park,
  • Se Dong Park,
  • Kyungmin Seo,
  • Min Ki Son,
  • Gyun Ho Yu

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 3σ 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.