Speaker
Description
As an offshoot of the main SuperCDMS (Cryogenic Dark Matter Search) experiment, smaller instruments dubbed HVeV (high-voltage, electronvolt-scale resolution) detectors have been under continuous development to aid in the search for dark matter at masses below 1 MeV/c², achieving a much finer energy resolution than SuperCDMS. Similar to the SuperCDMS HV detectors, HVeV detectors hold silicon crystals (though scaled down to the order of one gram) that observe nuclear and electron recoils by directing phonon energy into highly sensitive transition-edge sensors, and can amplify signals from electron-hole pairs produced by recoils using applied voltage to induce the Neganov-Trofimov-Luke effect. HVeV Run 5 employed the latest HVeV detectors in a four-month data-taking campaign in 2024 at SNOLAB's CUTE facility, including a ten-day dark matter search, and demonstrated world-class sensitivity at low masses, enabling a new analysis that reaches yet unprobed regions of the dark matter parameter space. This presentation will cover the latest results from analyzing the detectors' performance and the resulting search data.
| Keyword-1 | dark matter |
|---|---|
| Keyword-2 | SuperCDMS |