Development of ultra-pure NaI(Tl) detectors for the COSINE-200 experimentopen access
- Authors
- Park, B.J.; Choi, J.J.; Choe, J.S.; Gileva, O.; Ha, C.; Iltis, A.; Jeon, E.J.; Kim, D.Y.; Kim, K.W.; Kim, S.K.; Kim, Y.D.; Ko, Y.J.; Lee, C.H.; Lee, H.S.; Lee, I.S.; Lee, M.H.; Lee, S.H.; Ra, S.J.; Son, J.K.; Shin, K.A.
- Issue Date
- Sep-2020
- Publisher
- Springer
- Citation
- European Physical Journal C, v.80, no.9
- Journal Title
- European Physical Journal C
- Volume
- 80
- Number
- 9
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/63272
- DOI
- 10.1140/epjc/s10052-020-8386-8
- ISSN
- 1434-6044
1434-6052
- Abstract
- The annual modulation signal observed by the DAMA experiment is a long-standing question in the community of dark matter direct detection. This necessitates an independent verification of its existence using the same detection technique. The COSINE-100 experiment has been operating with 106 kg of low-background NaI(Tl) detectors providing interesting checks on the DAMA signal. However, due to higher backgrounds in the NaI(Tl) crystals used in COSINE-100 relative to those used for DAMA, it was difficult to reach final conclusions. Since the start of COSINE-100 data taking in 2016, we also have initiated a program to develop ultra-pure NaI(Tl) crystals for COSINE-200, the next phase of the experiment. The program includes efforts of raw powder purification, ultra-pure NaI(Tl) crystal growth, and detector assembly techniques. After extensive research and development of NaI(Tl) crystal growth, we have successfully grown a few small-size (0.61–0.78 kg) thallium-doped crystals with high radio-purity. A high light yield has been achieved by improvements of our detector assembly technique. Here we report the ultra-pure NaI(Tl) detector developments at the Institute for Basic Science, Korea. The technique developed here will be applied to the production of NaI(Tl) detectors for the COSINE-200 experiment. © 2020, The Author(s).
- Files in This Item
-
- Appears in
Collections - College of Natural Sciences > Department of Physics > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/63272)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.