Muon detector for the COSINE-100 experiment

H. Prihtiadi, G. Adhikari, P. Adhikari, E. Barbosa De Souza, N. Carlin, S. Choi, W. Q. Choi, M. Djamal, A. C. Ezeribe, C. Ha, I. S. Hahn, A. J.F. Hubbard, E. J. Jeon, J. H. Jo, H. W. Joo, W. Kang, W. G. Kang, M. Kauer, B. H. Kim, H. KimH. J. Kim, K. W. Kim, N. Y. Kim, S. K. Kim, Y. D. Kim, Y. H. Kim, V. A. Kudryavtsev, H. S. Lee, J. Lee, J. Y. Lee, M. H. Lee, D. S. Leonard, K. E. Lim, W. A. Lynch, R. H. Maruyama, F. Mouton, S. L. Olsen, H. K. Park, H. S. Park, J. S. Park, K. S. Park, W. Pettus, Z. P. Pierpoint, S. Ra, F. R. Rogers, C. Rott, A. Scarff, N. J.C. Spooner, W. G. Thompson, L. Yang, S. H. Yong

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Abstract

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.

Original languageEnglish
Article numberT02007
JournalJournal of Instrumentation
Volume13
Issue number2
DOIs
StatePublished - 20 Feb 2018

Keywords

  • Dark Matter detectors (WIMPs, axions, etc.)
  • Large detector systems for particle and astroparticle physics
  • Particle identification methods

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