2020 Public DM2 data release

The Dark Matter Daily Modulation Experiment (DM2, pronounced DM-square) is a direct dark matter search experiment using the Skipper CCD technology developed by the DAMIC and SENSEI experiments in a site at 40 deg of latitude South in order to exploit the potential daily modulation of Dark Matter induced signals. 

The Skipper CCD is similar to scientific CCD but exhibits world-class low readout noise, down to less than 0.1 electron, allowing individual electron counting, for a potential lower limit on ionization threshold of 1.2 eV, opening new window in the search for Dark Matter.

While these sensors exhibit low dark current, it is still the major limitation at 1 or 2 electron signals and the search for a sideral modulation in these signals is a way to extract a potential signal from background.

More details on DM2 are available on the collaboration website.

2020 Public data release

Since March 2020 (and with operation strongly impacted by the pandemia) the DM2 Skipper CCD has been in operation in Bariloche, Argentina. It will be moved to an underground site for a science run hopefully in 2021. The 2020 data release corresponds to a full day of data where the smallest signals below 10 electrons are masked but larger interactions are made public. A python notebook explaining the data and their analysis is provided, and can be run online at kaggle.

These data have the DOI 10.5281/zenodo.4502028 that you are requested to cite upon usage.

The DM2 Collaboration does not endorse any work, scientific or otherwise, produced using these data, even if available on, or linked from, this portal.