Berlin 2024 – scientific programme
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TT: Fachverband Tiefe Temperaturen
TT 18: Superconductivity: Poster
TT 18.68: Poster
Monday, March 18, 2024, 15:00–18:00, Poster C
ELECTRON - High-resolution electron spectroscopy of a novel tritium source using next-generation microcalorimeters — •Fabienne Bauer1, Lena Hauswald1, Neven Kovac2, Marie-Christin Langer1, Michael Müller1, Rudolf Sack2, Beate Bornschein2, Markus Steidl2, Magnus Schlösser2, Kathrin Valerius2, and Sebastian Kempf1 — 1Institute of Micro- and Nanoelectronic Systems (IMS), Karlsruhe Institute of Technology, Karlsruhe, Germany — 2Institute for Astroparticle Physics (IAP), Karlsruhe Institute of Technology, Eggenstein-Leopoldshafen, Germany
Magnetic microcalorimeters (MMCs) are cryogenic single-particle detectors which are used for various challenging applications such as X-ray spectroscopy, mass spectrometry or radionuclide metrology. Due to their outstanding performance, they are considered as potential detector technology for a next-generation KATRIN-like neutrino mass experiment, ultimately aiming for investigating the ordering of the neutrino masses by performing a differential measurement of the tritium beta spectrum. To verify the suitability of MMCs for such an experiment, systematic effects potentially degrading the expected performance have to be investigated. Within this context, we present our project ELECTRON aiming to systematically study MMC-based electron detection. We will present our cryogenic set-up which can be used to measure external electrons from multiple different sources and discuss the results of our latest measurements. Finally, we present the status of our attempt to perform the world’s first measurement of the tritium spectrum using an atomic tritium source and an MMC.
Keywords: MMC; Electron detection