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.
|Number of pages||7|
|Journal||Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment|
|Publication status||Published - 2007 Feb 11|
Bibliographical noteFunding 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