Dresden 2020 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 39: Focus Session: Frontiers in Cryogenic Particle Detection

TT 39.4: Hauptvortrag

Mittwoch, 18. März 2020, 16:45–17:15, HSZ 03

CRESST and NUCLEUS: The low-energy frontier of Dark Matter and neutrino physics — •Raimund Strauss — Technische Universität München

The CRESST and NUCLEUS experiments are moving the low-energy frontier in astroparticle physics with cryogenic calorimeters. Their common detector technology is based on single crystals equipped with tungsten transition-edge-sensors that are operated at temperatures of about 10mK. CRESST has achieved the world-best energy thresholds for nuclear recoils in the 10eV regime and is currently the leading experiment for sub-GeV Dark Matter searches. In this talk, I will present recent results on low-mass Dark Matter acquired during the latest measurement campaign at the Gran Sasso underground laboratory (LNGS) in Italy, and discuss the future Dark Matter program of CRESST. The NUCLEUS experiment aims for the exploration of coherent-elastic neutrino nucleus scattering (CEvNS) at a nuclear power reactor. It opens a new window to study the fundamental properties of neutrinos and to probe physics beyond the Standard Model of Particle Physics. Accessing energies down to the 10 eV regime enables to fully exploit the strongly enhanced cross section of CEvNS which leads to a miniaturization of neutrino detectors. A new detector concept based on gram-scale cryogenic calorimeters establishes a fiducial-volume cryogenic detector. NUCLEUS is fully funded and will be installed at the CHOOZ nuclear power plant in France. I will present first results from a prototype cryogenic detector and discuss the extensive physics program of NUCLEUS.

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