Operation modes of the KATRIN experiment Tritium Loop System using .sup.83m./sup.Kr

0567961 - ÚJF 2023 RIV GB eng J - Journal Article
Marsteller, A. - Böttcher, M. - Bornschein, B. - Enomoto, S. - Fengler, C. - Lebeda, Ondřej - Machatschek, M. - Priester, F. - Ráliš, Jan - Röllig, M. - Röttele, C. - Schlösser, M. - Šefčík, Michal - Sturm, M. - Vénos, Drahoslav
Operation modes of the KATRIN experiment Tritium Loop System using ^83mKr.
Journal of Instrumentation. Roč. 17, č. 12 (2022), č. článku P12010. ISSN 1748-0221. E-ISSN 1748-0221
R&D Projects: GA MŠMT LTT19005
Research Infrastructure: CANAM II - 90056
Institutional support: RVO:61389005
Keywords : Detector alignment and calibration methods (lasers, sources, particle-beams) * Gas systems and purification * Plasma diagnostics - charged-particle spectroscopy
OECD category: Nuclear related engineering
Impact factor: 1.3, year: 2022
Method of publishing: Open access
https://doi.org/10.1088/1748-0221/17/12/P12010

The KArlsruhe TRItium Neutrino (KATRIN) experiment aims to search for the effective electron antineutrino mass with a sensitivity of 0.2 eV (90 % C.L.). In order to achieve this goal, KATRIN measurement phases focusing on the neutrino mass search are alternated with phases of investigations of systematic effects. During these phases, metastable 83mKr is used as a calibration source. The monoenergetic conversion electrons emitted accompanying the decay of 83mKr allow a direct access to the starting conditions of β-electrons produced inside the windowless gaseous tritium source (WGTS) of KATRIN. To make use of 83mKr in the WGTS, the Tritium Loop System, which provides a stable flow of tritium to the WGTS, needs to be operated in special modes. This paper focuses on the technical implementation of these modes and their performance with regard to the achievable 83mKr-rates, gas densities, and gas compositions inside the WGTS.
Permanent Link: https://hdl.handle.net/11104/0339270