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Münster 2017 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 79: Suche nach Dunkler Materie 3 (Direkter Nachweis)

T 79.2: Gruppenbericht

Mittwoch, 29. März 2017, 17:05–17:25, VSH 19

Direct Dark Matter Search with CRESST III – Status & Perspectives — •Michael Willers for the CRESST collaboration — Physik-Department, Technische Universität München, D-85748 Garching, Germany

The CRESST experiment, located in the Gran Sasso underground laboratory (LNGS), Italy aims at the direct detection of dark matter (DM) particles. Scintillating CaWO4 crystals operated as cryogenic detectors are used as target material for DM-nucleus scattering. The simultaneous measurement of the heat signal from the CaWO4 crystal and the emitted scintillation light is used for particle identification. Due to it’s low nuclear recoil energy threshold the experiment is probing the low-mass region of the parameter space for spin-independent DM-nucleus scattering below ∼ 5 GeV/c2 with high sensitivity. Recent results obtained using a 300 g detector with a nuclear recoil energy threshold of 307 eV provide the world best limit for DM particle masses below 1.7 GeV/c2.

The goal of the CRESST III experiment is to significantly improve the sensitivity for low-mass DM particles by using optimised cryogenic detector modules, each consisting of a 24 g CaWO4 target crystal and 20x20 mm2 Silicon-on-Sapphire light detector. Phase 1 of the experiment operates 10 detector modules with a total target mass of 240 g and started taking data in August 2016. In this talk I will present the current status and future perspectives of the CRESST III experiment.

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