Upgrading the COSINE-100 experiment for enhanced sensitivity to low-mass dark matter detection
Abstrak
Abstract 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.
Topik & Kata Kunci
Penulis (26)
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
Akses Cepat
- Tahun Terbit
- 2025
- Sumber Database
- DOAJ
- DOI
- 10.1038/s42005-025-02067-4
- Akses
- Open Access ✓