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 immersed in 2200~L of linear alkylbenzene-based liquid scintillator. The liquid scintillator tags between 65 and 75\% of the internal 40K background in the 2--6 keV energy region. We also describe the background model for the liquid scintillator, which is primarily used to assess its energy calibration and threshold.
Cite
@article{arxiv.2004.03463,
title = {The COSINE-100 Liquid Scintillator Veto System},
author = {G. Adhikari and E. Barbosa de Souza and N. Carlin and J. J. Choi and S. Choi and M. Djamal and A. C. Ezeribe and L. E. Franca and C. Ha and I. S. Hahn and E. J. Jeon and J. H. Jo and W. G. Kang and M. Kauer and H. Kim and H. J. Kim and K. W. Kim and S. K. Kim and Y. D. Kim and Y. H. Kim and Y. J. Ko and E. K. Lee and H. S. Lee and J. Lee and J. Y. Lee and M. H. Lee and S. H. Lee and D. S. Leonard and B. B. Manzato and R. H. Maruyama and R. J. Neal and S. L. Olsen and B. J. Park and H. K. Park and H. S. Park and K. S. Park and R. L. C. Pitta and H. Prihtiadi and S. J. Ra and C. Rott and K. A. Shin and A. Scarff and N. J. C. Spooner and W. G. Thompson and L. Yang and G. H. Yu},
journal= {arXiv preprint arXiv:2004.03463},
year = {2021}
}