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Shin, Keonah
지하실험 연구단
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A facility for mass production of ultra-pure NaI powder for the COSINE-200 experiment

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Title
A facility for mass production of ultra-pure NaI powder for the COSINE-200 experiment
Author(s)
Keonah Shin; Jun Seok Choe; Olga Gileva; Iltis, A; Yeongduk Kim; Cheol Ho Lee; Hyun Su Lee; Moo Hyun Lee; Park, HK
Subject
Manufacturing, ; Overall mechanics design (support structures and materials, vibration analysis etc)
Publication Date
2020-07
Journal
JOURNAL OF INSTRUMENTATION, v.15, no.7, pp.C07031
Publisher
IOP PUBLISHING LTD
Abstract
© 2020 IOP Publishing Ltd and Sissa Medialab. COSINE-200 is the next phase of the ongoing COSINE-100 experiment. The main purpose of the experiment is the performance of an unambiguous verification of the annual modulation signals observed by the DAMA experiment. The success of the experiment critically depends on the production of a 200 kg array of ultra-pure NaI(Tl) crystal detectors that have lower backgrounds than the DAMA crystals. The purification of raw powder is the initial but important step toward the production of ultra-pure NaI(Tl) detectors. We have already demonstrated that fractional recrystallization from water solutions is an effective method for the removal of the problematic K and Pb elements. For the mass production of purified powder, a clean facility for the fractional recrystallization had been constructed at the Institute for Basic Science (IBS), Korea. Here, we report the design of the purification process, material recovery, and performance of the NaI powder purification facility
URI
https://pr.ibs.re.kr/handle/8788114/7733
DOI
10.1088/1748-0221/15/07/C07031
ISSN
1748-0221
Appears in Collections:
Center for Underground Physics(지하실험 연구단) > 1. Journal Papers (저널논문)
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