Muon detector for the COSINE-100 experiment

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 is used to detect cosmic ray muons in order to understand the impact of the muon annual modulation on dark matter analysis. Assembly and initial performance test of each module have been performed at a ground laboratory. The installation of the detector in 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 $\pm$ 1(stat.)$\pm$ 10(syst.) muons/m${}^2$/day. In this report, the assembly of the muon detector and the results from the analysis are presented.

arXiv comment11 pages, 19 figures

References in corpus (17)

• Supersymmetric Dark Matter
• New results from DAMA/LIBRA
• Final model independent result of DAMA/LIBRA-phase1
• Dark matter direct-detection experiments
• Annual Modulation of Dark Matter: A Review
• Atmospheric Muon Flux at Sea Level, Underground, and Underwater
• Radiogenic and Muon-Induced Backgrounds in the LUX Dark Matter Detector
• Tests on NaI(Tl) crystals for WIMP search at the Yangyang Underground Laboratory
• First search for a dark matter annual modulation signal with NaI(Tl) in the Southern Hemisphere by DM-Ice17
• Compatibility of DAMA/LIBRA dark matter detection with other searches in light of new Galactic rotation velocity measurements
• Fitting the annual modulation in DAMA with neutrons from muons and neutrinos
• Muon-induced background in the EDELWEISS dark matter search
• First data from DM-Ice17
• Understanding NaI(Tl) crystal background for dark matter searches
• Muon-induced neutrons do not explain the DAMA data
• Seasonal Modulations of the Underground Cosmic-Ray Muon Energy
• A simulation-based study of the neutron backgrounds for NaI dark matter experiments

Cited by in corpus (31)

• Search for a Dark Matter-Induced Annual Modulation Signal in NaI(Tl) with the COSINE-100 Experiment
• An experiment to search for dark matter interactions using sodium iodide detectors
• Strong constraints from COSINE-100 on the DAMA dark matter results using the same sodium iodide target
• Three-year annual modulation search with COSINE-100
• The COSINE-100 Data Acquisition System
• Lowering the energy threshold in COSINE-100 dark matter searches
• An induced annual modulation signature in COSINE-100 data by DAMA/LIBRA's analysis method
• The First Direct Search for Inelastic Boosted Dark Matter with COSINE-100
• Comparison between DAMA/LIBRA and COSINE-100 in the light of Quenching Factors
• Search for Boosted Dark Matter in COSINE-100
• Construction of Yemilab
• COSINE-100 and DAMA/LIBRA-phase2 in WIMP effective models
• Nonproportionality of NaI(Tl) Scintillation Detector for Dark Matter Search Experiments
• Performance of an ultra-pure NaI(Tl) detector produced by an indigenously-developed purification method and crystal growth for the COSINE-200 experiment
• The environmental monitoring system at the COSINE-100 experiment
• A search for solar axion induced signals with COSINE-100
• Upgrading the COSINE-100 Experiment for Enhanced Sensitivity to Low-Mass Dark Matter Detection
• Cosmic Ray Muons in Laboratories Deep Underground
• Neutron and muon-induced background studies for the AMoRE double-beta decay experiment
• Study of fast neutron detector for COSINE-100 experiment
• Development of an array of HPGe detectors with 980% relative efficiency
• Search for bosonic super-weakly interacting massive particles at COSINE-100
• COSINE-100 Full Dataset Challenges the Annual Modulation Signal of DAMA/LIBRA
• Search for solar bosonic dark matter annual modulation with COSINE-100
• Search for inelastic WIMP-iodine scattering with COSINE-100
• Alpha backgrounds in NaI(Tl) crystals of COSINE-100
• Lowering threshold of NaI(Tl) scintillator to 0.7 keV in the COSINE-100 experiment
• A feasibility study of extruded plastic scintillator embedding WLS fiber for AMoRE-II muon veto
• Searching for low-mass dark matter via Migdal effect in COSINE-100
• Constraints on sub-GeV dark matter scattering on electrons with COSINE-100
• Validation of the COSINE-100U NaI(Tl) Encapsulation for Low-Temperature Operation in Liquid Scintillator