Würzburg 2018 – scientific programme

Parts | Days | Selection | Search | Updates | Downloads | Help

T: Fachverband Teilchenphysik

T 6: Suche nach dunkler Materie I

T 6.1: Group Report

Monday, March 19, 2018, 16:00–16:20, Philo-HS6

Direct Dark Matter Search with the CRESST-III Experiment — •Andrea Münster for the CRESST collaboration — Physik-Department E15 und Excellence Cluster Universe, Technische Universität München, Garching, Germany

The CRESST (Cryogenic Rare Event Search with Superconducting Thermometers) experiment, located at the Gran Sasso underground laboratory (LNGS) in Italy, aims at the direct detection of dark matter particles via their elastic scattering off nuclei. The target material consists of scintillating CaWO₄ single crystals operated as cryogenic detectors at millikelvin temperatures. For several years, these crystals have successfully been produced within the collaboration at the Technical University of Munich (TUM) and a significant improvement in radiopurity could be achieved. In CRESST-II Phase 2, an extended physics run between 2013 and 2015, the experiment demonstrated its leading sensitivity in the field of direct searches for dark matter masses below 1.7 GeV/c² . A further detector optimization for the search of low-mass dark matter particles was performed for CRESST-III, whose Phase 1 started taking data in summer 2016. In this talk the performance of the CRESST-III detectors as well as first results will be presented. Requirements and perspectives for the upcoming CRESST-III Phase 2, in particular with respect to radiopurity, will be discussed.