10-17 July 2019
Ghent
Europe/Brussels timezone

Searches for dark matter with the CRESST-III Experiment

11 Jul 2019, 17:55
20m
Campus Ledeganck - Aud. 2 (Ghent)

Campus Ledeganck - Aud. 2

Ghent

Parallel talk Dark Matter Dark Matter

Speaker

Jochen Schieck (Austrian Academy of Sciences (AT))

Description

CRESST-III is a cryogenic dark matter experiment operated at the Gran Sasso laboratory in Italy. The primary research interest is the search for dark matter in the sub-GeV mass region. Dark matter particles are detected by measuring the nuclear recoil energy from the elastic scatter with the dark matter particle. The experimental challenge for reaching such a low mass region is to achieve the lowest possible energy detection threshold. Currently CRESST-III has obtained an energy detection threshold of 30.1 eV. The target material is a 24g CaWO4-crystal operated at a temperature of about 15 mK and using a dual read-out scheme. By measuring the phonons and the scintillation light an active background suppression can be reached.
We will present spin-independent results from direct dark matter searches. We will discuss electromagnetic background sources and its composition, based on a Geant4-simulation. The simulation contains the CaWO4-crystal as well as the Cu-support structure. We will also discuss spin-dependent results obtained with a a CaWO4- and a Li2MoO4-crystal.
Finally we will present first results from a new data taking campaign, which started end of 2018 and will give an outlook of the future stages of the experiment.

Primary author

Jochen Schieck (Austrian Academy of Sciences (AT))

Presentation Materials