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

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Title
Tests on NaI(Tl) crystals for WIMP search at the Yangyang Underground Laboratory
Author(s)
Kim, KW; Woon Gu Kang; Oh, SY; Adhikari, P; Jungho So; Nam Young Kim; Lee, HS; Choi, S; Hahn, IS; Eunju Jeon; Joo, HW; Kim, BH; Kim, HJ; Yeongduk Kim; Yong Hamb Kim; Lee, JK; Leonard, DS; Jin Li; Olsen, SL; Park, HS
Publication Date
2015-03
Journal
ASTROPARTICLE PHYSICS, v.62, no., pp.249 - 257
Publisher
ELSEVIER SCIENCE BV
Abstract
Among the direct searches for WIMP-type dark matter, the DAMA experiment is unique in that it has consistently reported a positive signal for an annual-modulation signal with a large (9.3r) statistical significance. This result is controversial because if it is interpreted as a signature for WIMP interactions, it conflicts with other direct search experiments that report null signals in the regions of parameter space that are allowed by the DAMA observation. This necessitates an independent verification of the origin of the observed modulation signal using the same technique as that employed by the DAMA experiment, namely low-background NaI(Tl) crystal detectors. Here, we report first results of a program of NaI(Tl) crystal measurements at the Yangyang Underground Laboratory aimed at producing NaI(Tl) crystal detectors with lower background levels and higher light yields than those used for the DAMA measurements.
URI
https://pr.ibs.re.kr/handle/8788114/1428
ISSN
0927-6505
Appears in Collections:
Center for Underground Physics(지하실험 연구단) > Journal Papers (저널논문)
Files in This Item:
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