SMuK 2023 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 74: Poster
HK 74.7: Poster
Donnerstag, 23. März 2023, 17:30–19:00, HSZ EG
Evolution of the KATRIN energy scale measured with 83mKr — •Justus Beisenkötter for the KATRIN collaboration — Institut für Kernphysik, WWU Münster
The KATRIN experiment has the aim to measure or exclude the effective electron neutrino mass to 0.2 eV/c2 (90% C.L.) by measuring the tritium beta spectrum near its endpoint. To study the energy scale of KATRIN, which is influenced by beamline workfunctions and plasma effects in the gaseous tritium source, 83mKr conversion electron lines are used. Gaseous 83mKr is inserted into the tritium source, which allows to measure energy shifts and broadenings that would also affect the beta spectrum. This poster gives an overview of the time evolution of the line position of the L3-32 and N23-32 lines, which were measured many times over the course of the KATRIN operation. This work is supported by BMBF under contract number 05A20PMA.