Erlangen 2026 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 60: Methods in Astroparticle Physics III

T 60.9: Vortrag

Mittwoch, 18. März 2026, 18:15–18:30, KS 00.004

KATRIN++ - New Detector Technologies for a Future Neutrino Mass Experiment with Tritium — •Neven Kovac for the KATRIN collaboration — Institute for Astroparticle Physics - Karlsruhe Institute of Technology

Currently, the tightest constraints on the absolute scale of neutrino mass from a direct, model-independent approach, are obtained by the KATRIN experiment, giving an upper limit on the mass of the electron anti-neutrino of 0.45 eV (DOI: 10.1126/science.adq959), with final projected sensitivity below 0.3 eV. Going beyond this limit, and probing the inverted mass ordering (and beyond), will be the task for future neutrino mass experiments. In this regard, development of new detector technologies is of utmost importance, with quantum sensor arrays currently being the front runners due to their exceptional performance and excellent energy resolution.

In this talk we present our recent results where we demonstrate the feasibility for measurements of external electrons using metallic microcalorimeters, and report on our plans for first ever measurements of tritium β-spectrum using quantum sensors.

Keywords: Quantum Sensors; Metallic Microcalorimeters; Neutrino Mass; Neutrino; Tritium