Göttingen 2025 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 6: Silicon Detectors II (Belle II, Tristan)

T 6.6: Vortrag

Montag, 31. März 2025, 18:00–18:15, VG 1.101

Characterization of TRISTAN Detector Modules in a KATRIN-like Detector Section with 83mKr — •Christian Forstner for the KATRIN collaboration — TUM School of Natural Sciences - Physics Department, Garching, Germany

Sterile neutrinos, a minimal extension of the Standard Model of particle physics, are a promising dark matter candidate if their mass is in the keV-range. The Karlsruhe Tritium Neutrino experiment (KATRIN) will be equipped with a multi-pixel silicon drift detector array, the TRISTAN detector, to search for a keV-scale sterile neutrino signature in the tritium β-decay spectrum. This measurement will follow the completion of KATRIN’s neutrino mass measurement campaign. In this work, we report on the first simultaneous operation of three TRISTAN detector modules. The detector system has been installed in a KATRIN-like detector section and is characterized using a 83mKr source. This talk will focus on the first light observed with the detectors to validate the progress of the system and its readiness for the sterile neutrino operation.

This work is supported by the Helmholtz Association and by the Ministry for Education and Research BMBF (grant numbers 05A23PMA, 05A23PX2, 05A23VK2 and 05A23WO6).