Aachen 2019 – scientific programme
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T: Fachverband Teilchenphysik
T 33: Neutrino-Detektoren I
T 33.6: Talk
Tuesday, March 26, 2019, 17:15–17:30, S07
Results of the commissioning of the gaseous Kr-83m calibration source of KATRIN — •Hendrik Seitz-Moskaliuk for the KATRIN collaboration — Karlsruher Institut für Technologie, Institut für Experimentelle Teilchenphysik, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen
The metastable isotope Kr-83m de-excites via internal conversion and offers several intense conversion electron lines in the range from 7-32 keV with natural line widths of 1-2 eV. This makes it an ideal nuclear standard for the calibration of high-precision spectroscopic experiments like KATRIN. KATRIN will measure the electron antineutrino mass with an unprecedented precision of 0.2 eV/c2 and utilizes three different kinds of Kr-83m sources for calibration and monitoring purposes. The first commissioning measurements of the gaseous Kr-83m source were performed in summer 2017. This talk summarizes the results. Important benchmarks for future calibration measurements are set and the outstanding capabilities for high-resolution spectroscopy with KATRIN are demonstrated. This work is supported by BMBF (05A14VK2) and the Helmholtz Association.