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A Study of NaI(Tl) crystal Encapsulation using Organic scintillators for the Dark Matter Search
J. Y. Lee, G. Adhikari, C. Ha +5
Scintillating NaI(Tl) crystals are used for various rare decay experiments, such as dark matter searches. The hygroscopicity of NaI(Tl) crystal makes the construction of crystal de…
Search for a Dark Matter-Induced Annual Modulation Signal in NaI(Tl) with the COSINE-100 Experiment
100 Collaboration, G. Adhikari, P. Adhikari +46
We present new constraints on the dark matter-induced annual modulation signal using 1.7 years, of COSINE-100 data with a total exposure of 97.7 kgyears. The COSINE-100 expe…
Measurement of low-energy background events due to Rn contamination on the surface of a NaI(Tl) crystal
K. W. Kim, C. Ha, N. Y. Kim +4
It has been known that decays of daughter elements of Rn on the surface of a detector cause significant background at energies below 10 keV. In particular Pb and $^…
Understanding NaI(Tl) crystal background for dark matter searches
G. Adhikari, P. Adhikari, C. Ha +8
We have developed ultra-low-background NaI(Tl) crystals to reproduce the DAMA results with the ultimate goal of achieving purity levels that are comparable to or better than those…
Performance of a prototype active veto system using liquid scintillator for a dark matter search experiment
J. S. Park, P. Adhikari, G. Adhikari +7
We report the performance of an active veto system using a liquid scintillator with NaI(Tl) crystals for use in a dark matter search experiment. When a NaI(Tl) crystal is immersed…