Abstract
The CRESST experiment uses cryogenic detectors based on transition-edge sensors to search for dark matter interactions. Each detector module consists of a scintillating CaWO4 crystal and a silicon-on-sapphire (SOS) light detector which operate in coincidence (phonon-light technique). The 40-mm-diameter SOS disks (2 g mass) used in the data taking campaign of CRESST-II Phase 2 (2014–2016) reached absolute baseline resolutions of σ= 4–7 eV. This is the best performance reported for cryogenic light detectors of this size. Newly developed silicon beaker light detectors (4 cm height, 4 cm diameter, 6 g mass), which cover a large fraction of the target crystal surface, have achieved a baseline resolution of σ=5.8eV. First results of further improved light detectors developed for the ongoing low-threshold CRESST-III experiment are presented.
Original language | English |
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Pages (from-to) | 1160-1166 |
Number of pages | 7 |
Journal | Journal of Low Temperature Physics |
Volume | 193 |
Issue number | 5-6 |
DOIs | |
State | Published - 1 Dec 2018 |
Keywords
- Cryogenic light detector
- Direct dark matter search
- Transition-edge sensor