Tests on NaI(Tl) crystals for WIMP search at the Yangyang Underground Laboratory

Abstract

Among the direct search experiments for WIMP dark matter, the DAMA experiment observed an annual modulation signal interpreted as WIMP interactions with 9.2$\sigma$ significance. However, this result is contradictory with other direct search experiments reporting null signals in the same parameter space allowed by the DAMA observation, necessitating clarification of the origin of the modulation signal observed using the NaI(Tl) crystals of the DAMA experiment independently. Here, we report the first results of NaI(Tl) crystal measurement at the Yangyang Underground Laboratory to grow ultra-low-background NaI(Tl) crystal detectors.

12 pages, 16 figures

References in corpus (6)

• Dark Matter Results from 225 Live Days of XENON100 Data
• First results from DAMA/LIBRA and the combined results with DAMA/NaI
• New results from DAMA/LIBRA
• The DAMA/LIBRA apparatus
• New Limits on Interactions between Weakly Interacting Massive Particles and Nucleons Obtained with CsI(Tl) Crystal Detectors
• Direct dark matter detection: the next decade

Cited by in corpus (18)

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• Exploring coherent elastic neutrino-nucleus scattering using reactor electron antineutrinos in the NEON experiment
• Performance of a prototype active veto system using liquid scintillator for a dark matter search experiment
• Bulk NaI(Tl) scintillation low energy events selection with the ANAIS-0 module
• Scintillation characteristics of a NaI(Tl) crystal at low-temperature with silicon photomultiplier
• COSINE-100 and DAMA/LIBRA-phase2 in WIMP effective models
• Performance of an ultra-pure NaI(Tl) detector produced by an indigenously-developed purification method and crystal growth for the COSINE-200 experiment
• Sensitivity of alkali halide scintillating calorimeters with particle identification to investigate the DAMA dark matter detection claim
• A search for solar axion induced signals with COSINE-100
• Upgrading the COSINE-100 Experiment for Enhanced Sensitivity to Low-Mass Dark Matter Detection
• Sensitivities for coherent elastic scattering of solar and supernova neutrinos with future NaI(Tl) dark matter search detectors of COSINE-200/1T
• Waveform Simulation for Scintillation Characteristics of NaI(Tl) Crystal
• COSINE-100 Full Dataset Challenges the Annual Modulation Signal of DAMA/LIBRA
• Upgrade of NaI(Tl) crystal encapsulation for the NEON experiment
• The SABRE South Technical Design Report Executive Summary
• Production and suppression of delayed light in NaI
• Identification of new isomers in ${}^{228}$Ac : Impact on dark matter searches