Speaker
Description
The TREX-DM experiment is a high-pressure gaseous Time Projection Chamber (TPC), located at Canfranc Underground Laboratory (LSC, 2500 m.w.e.), conceived to search for low-mass WIMPs (m < 10 GeV/c2) using novel radiopure Micromegas detectors. In order to be competitive in this low-mass region, TREX-DM faces the challenges of very low background level (order 1 c/keV/day/kg), low energy threshold (typically < 1 keVee) and the optimisation of the gas mixture used (lighter mixtures are preferred). A description of the detector specifications is discussed along with the latest improvements of the experiment and the current status of the high-pressure data taking campaigns. The successful introduction of a GEM as a preamplification stage have already demonstrated the TREX-DM potential to go down to the single-electron ionisation detection. This low energy threshold allows to reach sensitivities in an unexplored low mass WIMP parameter space.
| Main Contribution topic | Direct detection |
|---|---|
| Secondary contribution topic | Light Dark Matter |