DSpace at EWHA: Development of low-background CsI(Tℓ) crystals for WIMP search

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Development of low-background CsI(Tℓ) crystals for WIMP search

Authors: Lee H.S.; Bhang H.; Hahn I.S.; Hwang M.J.; Kim H.J.; Kim S.C.; Kim S.K.; Kim S.Y.; Kim T.Y.; Kim Y.D.; Kwak J.W.; Kwon Y.J.; Lee J.; Lee J.I.; Lee M.J.; Li J.; Myung S.S.; Park H.; Zhu J.J.

Journal Title: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Citation: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment vol. 571, no. 3, pp. 644 - 650

Abstract: Search for weakly interacting massive particles (WIMPs) is being carried out at the underground laboratory, Yangyang, Korea. Characteristics and internal background of CsI(Tℓ) crystal have been investigated. In our extensive R&D, we reduced internal background in the CsI (T ℓ) crystal. With the latest, we have achieved 5.50 ± 0.10 cpd (counts/keV/kg/day) at 10-15 keV low-energy region. Further reduction of internal background is foreseen with the CsI powder lately produced. © 2006 Elsevier B.V. All rights reserved.