期刊
JOURNAL OF LOW TEMPERATURE PHYSICS
卷 184, 期 3-4, 页码 904-909出版社
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10909-016-1535-7
关键词
MMCs; Fast light detector; Neutrinoless double beta decay; Scintillator time constant
资金
- European Community [228464]
- ANR [ANR 12 BS05 004 02]
Future rare-event searches using scintillating crystals need very low background levels for high sensitivity; however, unresolved pile-up can limit this. We present the design and fabrication of large-area photon detectors based on metallic magnetic calorimeters (MMCs), optimized for fast rise times to resolve close pile-up. The first prototypes have been characterized using Fe-55 X-rays and ZnMoO crystal scintillation light. A fast intrinsic rise time of 25-30 s has been measured and has been compared to the 250 s scintillation light pulse rise time constant. The difference indicates that the scintillation process limits the light pulse rise time. The fast rise time allows for a reduction of background due to close pile-up events as well as the study of the inherent crystal scintillation process. MMC-based photon detectors are shown to be a promising tool for scintillating crystal based rare event searches.
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