SMuK 2023 – scientific programme

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T: Fachverband Teilchenphysik

T 91: Neutrinos IV

T 91.2: Talk

Wednesday, March 22, 2023, 17:45–18:00, POT/0006

High voltage preparation and first measurement of a new ^83mKr conversion line with the KATRIN experiment — •Benedikt Bieringer and Matthias Böttcher for the KATRIN collaboration — Institute for Nuclear Physics, University of Münster

The Karlsruhe Tritium Neutrino Experiment (KATRIN) is targeted to measure the neutrino mass with a design sensitivity of 0.2 eV at 90 % confidence level through electron spectroscopy of β⁻ decay electrons from a windowless gaseous tritium source. To determine the spectrometer properties and to calibrate the beamline work function, a Condensed Krypton Source (CKrS) can be inserted into the beamline, providing conversion electrons from ^83mKr. For precision spectroscopy, the KATRIN experiment features a stabilized high voltage system up to −35 kV with ppm level precision. This talk presents the extention of the KATRIN high voltage system to support retarding potentials of up to −40 kV and a consecutive first measurement of a new ^83mKr conversion line using the CKrS following the idea of EPJ C 82 (2022) 700.

The work shown in this talk is funded via BMBF contract number 05A20PMA.