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Abstract <p>This work investigates scintillation modules of low-energy neutrino detector, read out by SiPMs. The study is focused the performance of SrI<sub>2</sub>(Eu) and CsI(pure) scintillators. The results showed a normalized light yield of 26 photoelectrons/keV for SrI<sub>2</sub>(Eu), while CsI(pure) at LN<sub>2</sub> temperature yielded 23 photoelectrons/keV. Part of the study is dedicated to conducting detailed measurements of the SiPM array’s performance across a wide temperature range, from room down to liquid nitrogen temperatures. This was essential to quantify and mitigate the high Dark Current Rate (DCR), a major challenge for detecting rare events with low threshold.</p>

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Modules of Cryogenic Scintillation Neutrino Detector with Energy Threshold below 500 eV

  • 期刊论文

  • 发表日期：

    2026年4月2日

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  • A. Baranov,
  • N. Bochkarev,
  • A. Ivashkin,
  • D. Kalashnikov,
  • S. Musin,
  • A. Strizhak

摘要

Abstract

This work investigates scintillation modules of low-energy neutrino detector, read out by SiPMs. The study is focused the performance of SrI2(Eu) and CsI(pure) scintillators. The results showed a normalized light yield of 26 photoelectrons/keV for SrI2(Eu), while CsI(pure) at LN2 temperature yielded 23 photoelectrons/keV. Part of the study is dedicated to conducting detailed measurements of the SiPM array’s performance across a wide temperature range, from room down to liquid nitrogen temperatures. This was essential to quantify and mitigate the high Dark Current Rate (DCR), a major challenge for detecting rare events with low threshold.