Radiopurity measurements of liquid scintillator for the COSINE-100 Upgrade

  • Kim, J.
  • Ha, C.
  • Kim, S.H.
  • Kim, W.K.
  • Kim, Y.D.
  • 외 10명
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초록

A new 2,400 L liquid scintillator has been produced for the COSINE-100 Upgrade, which is under construction at Yemilab for the next phase of the COSINE dark matter experiment phase. The linear-alkyl-benzene-based scintillator is designed to serve as a veto for NaI(Tl) crystal targets and a separate platform for rare event searches. We measured radioactivities of the liquid scintillator using a custom-made 445 mL cylindrical Teflon container equipped with two 3-inch photomultiplier tubes. Analyses show activity levels of 0.091 ± 0.042 mBq/kg for 238U and 0.012 ± 0.007 mBq/kg for 232Th. © 2025 IOP Publishing Ltd and Sissa Medialab. All rights, including for text and data mining, AI training, and similar technologies, are reserved.

키워드

Dark Matter detectors (WIMPs, axions, etc.)Scintillators, scintillation and light emission processes (solid, gas and liquid scintillators)
제목
Radiopurity measurements of liquid scintillator for the COSINE-100 Upgrade
저자
Kim, J.Ha, C.Kim, S.H.Kim, W.K.Kim, Y.D.Ko, Y.J.Lee, E.K.Lee, H.Lee, H.S.Lee, I.S.Lee, J.Lee, S.H.Lee, S.M.Lee, Y.J.Yu, G.H.
DOI
10.1088/1748-0221/20/06/T06006
발행일
2025-06
유형
Article
저널명
Journal of Instrumentation
20
6