Manchester Particle Physics Seminars, Colloquia and Meetings

Rocio Vilar: Thick, silicon CCDs to search for dark matter within the DAMIC/DAMIC-M Experiment

Friday, 13 December 2019 from to (Europe/London)
at Schuster ( 54-6-6.40 - Niels Bohr Common Room )
The DAMIC (Dark Matter in CCDs) Experiment employs the active silicon of low-noise charge-coupled devices (CCDs) as a target to search for a variety of dark matter candidates. An array of seven 675-um thick CCDs with a target mass of ~40 grams has been collecting data at SNOLAB since early 2017, with a demonstrated combination of low electronic noise of 1.6 e−, an ionization response threshold of 35 eVee and high spatial resolution of particle interactions, the experiment is also suited for searches of different candidates to dark matter in the low mass range below 6 GeV. The new results obtained from the collaboration will be presented in this seminar. The next stage of the experiment DAMIC-M, will be an array of CCDs with a total mass of 1 kg to be located in France at the Laboratoire Souterrain de Modane. The collaboration has engaged in an extensive campaign of characterization efforts to understand the response of these CCDs to low-energy recoils and their unique capabilities, including the use of high spatial resolution for both the rejection and study of backgrounds. This talk will address the general features of DAMIC CCDs and include some results of early characterization efforts of the improved DAMIC-M devices which feature skipper-style readout capable of single-electron resolution.