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

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

Research output: Contribution to journalArticle

45 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)644-650
Number of pages7
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume571
Issue number3
DOIs
Publication statusPublished - 2007 Feb 11

Bibliographical note

Funding Information:
This work was supported by Creative Science Research Initiative program of Korea Science and Engineering Foundation. We are very grateful to the Korea Midland Power Co. and their staffs for providing the underground laboratory space at Yangyang.

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Instrumentation

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