Aachen 2019 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 54: Direkte Suche nach Dunkler Materie III

T 54.1: Gruppenbericht

Mittwoch, 27. März 2019, 16:00–16:20, H09

Direct Dark Matter Search with the CRESST-III Experiment — •Alexander Langenkämper for the CRESST collaboration — Physik-Department E15, Technische Universität München, D-85747 Garching, Germany

The detection of dark matter (DM) is one of the biggest challenges in modern astroparticle physics. The CRESST-III (Cryogenic Rare Event Search with Superconducting Thermometers) experiment aims at the direct detection of DM particles via their elastic scattering off nuclei. Each detector consists of a ∼25 g scintillating CaWO₄ single crystal operated as cryogenic detector at millikelvin temperatures. An interaction in the CaWO₄ target crystal leads to a phonon and a light signal which is detected by a separated cryogenic light detector. The read-out of phonon and light signals allows an event-by-event particle discrimination which is used for background suppression. The latest run of the experiment (CRESST-III Phase 1) started data taking in August 2016 and was successfully finished in 2018, reaching nuclear recoil thresholds of well below 100 eV. In this talk the latest results will be presented. Requirements and perspectives for the upcoming CRESST-III phase will be discussed.