Speaker
Dr
Raimund Strauß
(MPI für Physik München)
Description
The CRESST (Cryogenic Rare Event Search with Superconducting Thermometers) experiment aims at the direct detection of dark matter particles. The recent dark matter run was operated for 2 years with a total target mass of 5kg. With respect to previous measuring campaigns the intrinsic radiopurity of CaWO$_4$ crystals and the capability to reject recoil events from alpha surface contamination have been significantly improved. We analyzed the data acquired by two CaWO$_4$ detectors which combine an unprecedented background level with a trigger threshold as low as 300eV. In this talk, we present a new detector design and a low-threshold analysis which set stringent limits for the spin-independent dark matter particle-nucleon cross section. These results show the high potential of CRESST for the exploration of low-mass dark matter. The status of the currently ongoing preparations towards the next phase of the experiment (CRESST-III) and the strategy beyond will be discussed.
Primary author
Dr
Raimund Strauß
(MPI für Physik München)
