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Pulse Shape Discrimination of Fast Neutron Background using Convolutional Neural Network for NEOS II
NEOS II Collaboration, Y. Jeong, B. Y. Han +19
Pulse shape discrimination plays a key role in improving the signal-to-background ratio in NEOS analysis by removing fast neutrons. Identifying particles by looking at the tail of…
Measurement of the cosmic muon annual and diurnal flux variation with the COSINE-100 detector
100 Collaboration, H. Prihtiadi, G. Adhikari +44
We report measurements of annual and diurnal modulations of the cosmic-ray muon rate in the Yangyang underground laboratory (Y2L) using 952 days of COSINE-100 data acquired between…
Lowering the energy threshold in COSINE-100 dark matter searches
G. Adhikari, E. Barbosa de Souza, N. Carlin +43
COSINE-100 is a dark matter detection experiment that uses NaI(Tl) crystal detectors operating at the Yangyang underground laboratory in Korea since September 2016. Its main goal i…
Development of ultra-pure NaI(Tl) detectors for the COSINE-200 experiment
B. J. Park, J. J. Choe, J. S. Choi +17
The annual modulation signal observed by the DAMA experiment is a long-standing question in the community of dark matter direct detection. This necessitates an independent verifica…
The COSINE-100 Liquid Scintillator Veto System
G. Adhikari, E. Barbosa de Souza, N. Carlin +43
This paper describes the liquid scintillator veto system for the COSINE-100 dark matter experiment and its performance. The COSINE-100 detector consists of eight NaI(Tl) crystals i…
Depth profile study of Pb in the surface of an NaI(Tl) crystal
G. H. Yu, C. Ha, E. J. Jeon +6
The surface Pb is one of the main background sources for dark-matter-search experiments using NaI(Tl) crystals, and its spectral features associated with the beta-decay eve…