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

2022/09/22 by B. von Krosigk, K. Eitel, von Krosigk, Belina +21 · 4 citations
Physics and Astronomy · #Atomic and Subatomic Physics Research #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Instrumentation and Detectors (physics.ins-det) #Quantum, superfluid, helium dynamics

paper · pdf · doi:10.48550/arxiv.2209.10950

openalex publication_date 2022/09/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

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 ⁴He 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.

Cited by

• The Direct Search Experiment for Light Dark Matter (DELight): Overview and Perspectives
• The SWEET project: probing sugar crystals for direct dark matter searches
• Hydrogenated carbon structures as directional sub-GeV dark matter detectors
• The SN 1987A Cooling Bound on Dark Matter Absorption in Electron Targets

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• Snowmass 2021 Underground Facilities for the Cosmic Frontier Topical Report