A facility for mass production of ultra-pure NaI powder for the COSINE-200 experiment

Autor:	Shin, Keonah, Choe, Junseok, Gileva, Olga, Iltis, Alain, Kim, Yeongduk, Lee, Cheolho, Lee, Hyun Su, Lee, Moo Hyun, Park, Hyang Kyu
Rok vydání:	2020
Předmět:	Physics - Instrumentation and Detectors Astrophysics - Instrumentation and Methods for Astrophysics High Energy Physics - Experiment Nuclear Experiment
Zdroj:	JINST 15 (2020) C07031
Druh dokumentu:	Working Paper
DOI:	10.1088/1748-0221/15/07/C07031
Popis:	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. Comment: Proceeding for INSTR20, accepted in JINST
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2004.13280 Zobrazit plný text záznamu View this record from Arxiv