Speaker
Description
The Dark Matter Daily Modulation experiment (DMSQUARE) seeks for dark matter interactions with a Skipper CCD. The low threshold achieved by Skipper CCDs allows to search for electron recoil events with an ionization energy down to 1.2 eV. In order to extract a potential dark matter signal, we propose to search for a diurnal modulation of events at the single electron level. This modulation would result from the potential interaction of the dark matter wind through the Earth. Depending on the model, mass and cross-section of the hypothetic DM particle, the modulation can be maximum at 40deg of latitude in the Southern Hemisphere, where DMSQUARE is operated. It is currently running at surface level in Bariloche, Argentina, and will be moved to a shallow underground site at Sierra Grande in September 2021. In this talk we will present the experiment, report preliminary results with Skipper CCDs taking data at surface level and comment on future prospects.
