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- Title
Reactor neutrino physics potentials of cryogenic pure-CsI crystal.
- Authors
Wang, Lei; Li, Guanda; Yu, Zeyuan; Liang, Xiaohua; Wang, Tian'an; Liu, Fang; Sun, Xilei; Guo, Cong; Zhang, Xin; Lei, Yu; Chen, Yuede
- Abstract
This paper presents a world-leading scintillation light yield among inorganic crystals measured from a 0.5 kg pure-CsI detector operated at 77 Kelvin. Scintillation photons were detected by two 2-inch Hamamatsu SiPM arrays equipped with cryogenic front-end electronics. Benefiting the light yield enhancement of pure-CsI at low temperatures and the high photon detection efficiency of SiPM, a light yield of 30.1 photoelectrons per keV energy deposit was obtained for X-rays and γ -rays with energies from 5.9 to 59.6 keV. Instrumental and physical effects in the light yield measurement are carefully analyzed. This is the first stable cryogenic operation of kg-scale pure-CsI crystal readout by SiPM arrays at liquid nitrogen temperatures for several days. The world-leading light yield opens a door for the usage of pure-CsI crystal in several fields, particularly in detecting the coherent elastic neutrino-nucleus scattering of reactor neutrinos. The potential of using pure-CsI crystals in neutrino physics is discussed in the paper.
- Subjects
SCINTILLATION counters; NEUTRINOS; CRYOELECTRONICS; PHYSICS; NEUTRINO scattering; CRYSTALS; ELASTIC scattering
- Publication
European Physical Journal C -- Particles & Fields, 2024, Vol 84, Issue 4, p1
- ISSN
1434-6044
- Publication type
Article
- DOI
10.1140/epjc/s10052-024-12800-y