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T: Fachverband Teilchenphysik

T 78: Invited Topical Talks 4

T 78.2: Eingeladener Vortrag

Donnerstag, 7. März 2024, 11:30–12:00, Geb. 30.22: Gaede-HS

Development, characterization, and integration of the Silicon Drift Detector array TRISTAN for KATRIN — •Frank Edzards for the KATRIN collaboration — Technical University of Munich, TUM School of Natural Sciences, Physics Department, 85748 Garching, Germany — Max Planck Institute for Physics, 85748 Garching, Germany

Sterile neutrinos are a natural extension of the Standard Model of particle physics. If their mass is in the keV range, they are a viable dark matter candidate. One way to search for sterile neutrinos in a laboratory-based experiment is via tritium beta decay. A sterile neutrino with a mass up to 18.6 keV would manifest itself in the decay spectrum as a kink-like distortion. The objective of the TRISTAN project is to extend the KATRIN experiment with a novel multi-pixel silicon drift detector and readout system to search for a keV-scale sterile neutrino signal. This talk will give an overview on the current status of the project. Characterization measurement results obtained with a 166-pixel system will be shown.

This work is supported by BMBF (05A17PM3, 05A17PX3, 05A17VK2, 05A17WO3), KSETA, the Max Planck society, and the Helmholtz Association. This project has received funding from the European Research Council (ERC) under the European Union Horizon 2020 research and innovation programme (grant agreement No. 852845).

Keywords: Neutrino physics; Sterile neutrinos; Silicon drift detectors; Semiconductors