DELight: a Direct search Experiment for Light dark matter with superfluid helium

Abstract

To reach ultra-low detection thresholds necessary to probe unprecedentedly low Dark Matter masses, target material alternatives and novel detector designs are essential. One such target material is superfluid ${}^4$He which has the potential to probe so far uncharted light Dark Matter parameter space at sub-GeV masses. The new ``Direct search Experiment for Light dark matter'', DELight, will be using superfluid helium as active target, instrumented with magnetic micro-calorimeters. It is being designed to reach sensitivity to masses well below 100\,MeV in Dark Matter-nucleus scattering interactions.

IDM2022 proceedings submitted to SciPost

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Cited by in corpus (12)

• Freezing-in hadrophilic dark matter at low reheating temperatures
• Resonant or asymmetric: The status of sub-GeV dark matter
• Optomechanical dark matter instrument for direct detection
• QUEST-DMC: Background Modelling and Resulting Heat Deposit for a Superfluid Helium-3 Bolometer
• HeLIOS: The Superfluid Helium Ultralight Dark Matter Detector
• GLIMPSE: Graphene-based super-Light Invisible Matter Particle SEarch
• Optimum filter-based analysis for the characterization of a high-resolution magnetic microcalorimeter towards the DELight experiment
• New Limits on Light Dark Matter-Nucleon Scattering
• Small-data global existence of solutions for the Pitaevskii model of superfluidity
• Signal partitioning in superfluid ${}^4$He: a Monte Carlo approach
• Advanced fabrication process for particle absorbers of highly pure electroplated gold for microcalorimeter applications
• Hydrogenated carbon structures as directional sub-GeV dark matter detectors