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 WIMPs. 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 CaWO4 crystals and the capability to reject recoil events from alpha surface contamination has been significantly improved. We analyzed the data acquired by two CaWO4 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 the results of a low-threshold analysis which set stringent limits for the spin-independent WIMP-nucleon cross section, in particular for low-mass WIMPs. The status of the currently ongoing preparations towards the next phase of CRESST and the strategy beyond will be discussed.
Primary author
Dr
Raimund Strauss
(MPI für Physik München)
