2019 Meeting of the Division of Particles & Fields of the American Physical Society

July 29, 2019 to August 2, 2019
Northeastern University
US/Eastern timezone

Dark Matter search results from DAMIC at SNOLAB

Jul 30, 2019, 5:42 PM
17m
West Village G 102 (Northeastern University)

West Village G 102

Northeastern University

Oral Presentation Dark Matter

Speaker

Mr Alexander Piers (University of Washington)

Description

The DAMIC experiment at SNOLAB uses thick fully-depleted scientific grade charge-coupled devices (CCDs) to search for the interactions of dark matter particles in the galactic halo with ordinary silicon atoms. Because of the low instrumental (less than $2\ e^-$) noise, DAMIC CCDs are particularly sensitive to ionization signals expected from low-mass dark matter particles. For the past two years, DAMIC has collected dark-matter search data with an array of seven CCDs (40-gram target, 13 kg day exposure) installed in a low radiation environment in the SNOLAB underground laboratory. I will present recent results from the searches for WIMP and hidden-sector dark matter, which cover a wide range of particle masses from $\rm \sim1\ MeV c^{-2}$ to $\rm \sim 10\ GeV c^{-2}$. In particular, we probe—for the first time with the same nuclear target—a large fraction of the parameter space corresponding to the event excess previously observed by the CDMS-II silicon experiment.

Primary author

Mr Alexander Piers (University of Washington)