A prototype detector for the CRESST-III low-mass dark matter search

Abstract

The CRESST-III experiment which is dedicated to low-mass dark matter search uses scintillating CaWO${}_4$ crystals operated as cryogenic particle detectors. Background discrimination is achieved by exploiting the scintillating light signal of CaWO${}_4$ and by a novel active detector holder presented in this paper. In a test setup above ground, a nuclear-recoil energy threshold of $E_{th}=(190.6\pm 5.2)$eV is reached with a 24g prototype detector, which corresponds to an estimated threshold of $\sim$50eV when being operated in the low-noise CRESST cryostat. This is the lowest threshold reported for direct dark matter searches. For CRESST-III phase 1, ten such detector modules were installed in the cryostat which have the potential to improve significantly the sensitivity to scatterings of dark matter particles with masses down to $\sim$0.1GeV/c${}^2$.

12 pages, 5 figures

References in corpus (10)

• Results from 730 kg days of the CRESST-II Dark Matter Search
• Review of asymmetric dark matter
• Results on light dark matter particles with a low-threshold CRESST-II detector
• Results on low mass WIMPs using an upgraded CRESST-II detector
• Indirect and direct search for dark matter
• Energy-Dependent Light Quenching in CaWO${}_4$ Crystals at mK Temperatures
• Impact of Coherent Neutrino Nucleus Scattering on Direct Dark Matter Searches based on CaWO${}_4$ Crystals
• Probing low WIMP masses with the next generation of CRESST detector
• Beta/gamma and alpha backgrounds in CRESST-II Phase 2
• A detector module with highly efficient surface-alpha event rejection operated in CRESST-II Phase 2

Cited by in corpus (14)

• First results from the CRESST-III low-mass dark matter program
• The $\nu$-cleus experiment: A gram-scale fiducial-volume cryogenic detector for the first detection of coherent neutrino-nucleus scattering
• Gram-scale cryogenic calorimeters for rare-event searches
• Direct Detection of Dark Matter -- APPEC Committee Report
• First results on sub-GeV spin-dependent dark matter interactions with ${}^7$Li
• BULLKID: Monolithic array of particle absorbers sensed by Kinetic Inductance Detectors
• Cryogenic light detectors with enhanced performance for rare events physics
• Aluminum Relaxation as the Source of Excess Low Energy Events in Low Threshold Calorimeters
• Array of Cryogenic Calorimeters to Evaluate the Spectral Shape of forbidden $\beta$-decays: the ACCESS project
• Pico-charged intermediate particles rescue dark matter interpretation of 511 keV signal
• Low-Energy Backgrounds in Solid-State Phonon and Charge Detectors
• A Test of Bolometric Properties of Tm-containing Crystals as a Perspective Detector for the Solar Axion Search
• Detector development for the CRESST experiment
• Effects of Threshold Energy on Reconstructions of Properties of Low-Mass WIMPs in Direct Dark Matter Detection Experiments