Abstract
A search for particle cold dark matter with CsI(Tℓ) crystal is being prepared at the Cheong-Pyeong underground laboratory in Korea. The background spectra of CsI(Tℓ) crystal detectors in a prototype shield were obtained. The lowest background count rate of the test sample of crystals is measured to be 64.7±5.1 counts/keV/kg/day in the energy range of 5-20 keV. Quantitative estimation of residual radioactive isotope in CsI(Tℓ) was made using the GEANT4 Monte Carlo simulation. Analysis results show that CsI(Tℓ) crystal could be a good candidate for direct detection of WIMPs when the contamination level of cesium radioisotopes is reduced to under a few mBq/kg.
Original language | English |
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Pages (from-to) | 337-344 |
Number of pages | 8 |
Journal | Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |
Volume | 500 |
Issue number | 1-3 |
DOIs | |
Publication status | Published - 2003 Nov 3 |
Externally published | Yes |
Keywords
- CsI(Tℓ) crystal
- Dark matter
- Decay
- WIMP
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Instrumentation