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지하실험 연구단
지하실험 연구단
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Compact phonon-scintillation detection system for rare event searches at low temperatures

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Title
Compact phonon-scintillation detection system for rare event searches at low temperatures
Author(s)
H.L. Kim; J.A. Jeon; I. Kim; S.R. Kim; H.J. Kim; Kim Y.H.; D.H. Kwon; M.K. Lee; J.H. So
Publication Date
2020-02
Journal
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, v.954, no., pp.162107 -
Publisher
ELSEVIER SCIENCE BV
Abstract
© 2019 We have developed a compact cryogenic measurement system to investigate the phonon and scintillation properties of various scintillating crystals. This system employs a 1 × 1× 1 cm 3 crystal for the simultaneous detection of heat (phonon) and light (scintillation) signals based on metallic magnetic calorimeter (MMC) readouts at milliKelvin temperatures. Three molybdate crystals of CaMoO 4 , Na 2 Mo 2 O 7 , and Li 2 MoO 4 were tested in the detector system. This work surveys scintillating crystals as target materials for neutrinoless double beta (0νββ) decay of 100 Mo. All the measurements are successful in simultaneously detecting heat and light signals from the crystals. The measurements also results in clear particle identification using the pulse shapes and the relative amplitude ratios of the heat and light signals. We report the performance of the detector system through the amplitudes and time constants of the signals and the particle identification discrimination powers with discussion on 0νββ applications
URI
https://pr.ibs.re.kr/handle/8788114/6991
ISSN
0168-9002
Appears in Collections:
Center for Underground Physics(지하실험 연구단) > Journal Papers (저널논문)
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