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Cryogenic Heat-Light Detection System for 1-cm3 Scintillating Crystals

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Title
Cryogenic Heat-Light Detection System for 1-cm3 Scintillating Crystals
Author(s)
Hyelim Kim; Geon Bo Kim; H. J. Kim; Inwook Kim; Kim, Yong Hamb; Hyejin Lee; Seungyoon Oh; So, Jungho
Subject
Low-temperature detector (LTD), neutrinoless, ; double beta decay, phonon-scintillation detection, scintillating, ; crystal.
Publication Date
2018-02
Journal
IEEE TRANSACTIONS ON NUCLEAR SCIENCE, v.65, no.2, pp.766 - 770
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Abstract
We have developed a cryogenic heat and light detection system to investigate phonon and scintillation properties of scintillating crystals for rare event search experiments. The detector setup is designed to utilize a 1 × 1×1 cm3 scintillating crystal as a target material. A 1.5 × 1.5 × 0.05 cm3 Ge wafer is used as the absorber of the light detection. Metallic magnetic calorimeters are employed to measure heat and scintillation-light signals of the scintillating crystal, simultaneously, at millikelvin temperatures. This measurement setup is motivated to characterize various types of scintillation crystals in a standard coupon size for a final selection of the crystal compounds to be used for a rare event search experiment. We present the first measurement for a calcium molybdate crystal doped with niobium in the test setup of heat–light detection. Clear particle identification was obtained in comparison of relative amplitude ratios of the phonon and scintillation signals. Moreover, alpha- and electron-induced events showed difference in their pulse shapes of phonon and scintillation signals. We discuss the usage of this setup for the AMoRE 0 search experiment. © 2018 IEEE. Personal use is permitted, but republication/redistribution requires IEEE permission
URI
https://pr.ibs.re.kr/handle/8788114/4669
DOI
10.1109/TNS.2017.2788898
ISSN
0018-9499
Appears in Collections:
Center for Underground Physics(지하실험 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
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