Speaker
Description
The SuperCDMS-HVeV (High-Voltage with eV resolution) program is an
R&D project focused on developing detectors with low energy resolution to search for low-mass dark matter (≲ 1 GeV/c^2), study charge-transport in cryogenically cooled crystals, and probe unclassified backgrounds at low energy. The program utilizes gram-scale silicon detectors instrumented with TES (transition-edge sensor)-based phonon sensors. A high-voltage bias can be applied to the crystal to amplify phonon signals from ionizing interactions via the Neganov-Trofimov-Luke effect. Utilizing these tools, HVeV detectors have recently achieved sub-eV baseline energy resolutions and demonstrated competitive sensitivities to electron-recoil dark matter at masses below 1 MeV/c^2. This talk will show results from a data-taking campaign conducted at the CUTE facility at SNOLAB using an HVeV detector with a sub-eV baseline resolution. Included in these results are observations of the Low Energy Excess and progress on an electron-recoil dark matter search
| Main Contribution topic | Direct detection |
|---|---|
| Secondary contribution topic | Light Dark Matter |