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Prihtiadi, H.; Adhikari, G.; Adhikari, P.; de Souza, E. Barbosa; Carlin, N.; Choi, S.; Choi, W.Q.; Djamal, M.; Ezeribe, A.C.; Ha, C.; Hahn, I.S.; Hubbard, A.J.F.; Jeon, E.J.; Jo, J.H.; Joo, H.W.; Kang, W.; Kang, W.G.; Kauer, M.; Kim, B.H.; Kim, H.; Kim, H.J.; Kim, K.W.; Kim, N.Y.; Kim, S.K.; Kim, Y.D.; Kim, Y.H.; Kudryavtsev, V.A.; Lee, H.S.; Lee, J.; Lee, J.Y.; Lee, M.H.; Leonard, D.S.; Lim, K.E.; Lynch, W.A.; Maruyama, R.H.; Mouton, F.; Olsen, S.L.; Park, H.K.; Park, H.S.; Park, J.S.; Park, K.S.; Pettus, W.; Pierpoint, Z.P.; Ra, S.; Rogers, F.R.; Rott, C.; Scarff, A.; Spooner, N.J.C.; Thompson, W.G.; Yang, L.; Yong, S.H.
Journal of instrumentation, 02/2018, Volume: 13, Issue: 2Journal Article
The COSINE-100 dark matter search experiment has started taking physics data with the goal of performing an independent measurement of the annual modulation signal observed by DAMA/LIBRA. A muon detector was constructed by using plastic scintillator panels in the outermost layer of the shield surrounding the COSINE-100 detector. It detects cosmic ray muons in order to understand the impact of the muon annual modulation on dark matter analysis. Assembly and initial performance tests of each module have been performed at a ground laboratory. The installation of the detector in the Yangyang Underground Laboratory (Y2L) was completed in the summer of 2016. Using three months of data, the muon underground flux was measured to be 328 ± 1(stat.)± 10(syst.) muons/m2/day. In this report, the assembly of the muon detector and the results from the analysis are presented.
