Operation modes of the KATRIN experiment Tritium Loop System using 83mKr

Marsteller, Alexander; Böttcher, Matthias; Bornschein, Beate; Enomoto, Sanshiro; Fengler, Caroline; Lebeda, Ondřej; Machatschek, Moritz; Priester, Florian; Ráliš, Jan; Röllig, Marco; Röttele, Carsten; Schlösser, Magnus; Michal, Šefčík; Sturm, Michael; Vénos, Drahoslav

doi:10.1088/1748-0221/17/12/p12010

Operation modes of the KATRIN experiment Tritium Loop System using ^83mKr

Journal Article · Sun Dec 11 23:00:00 EST 2022 · Journal of Instrumentation

DOI:https://doi.org/10.1088/1748-0221/17/12/p12010· OSTI ID:2422464

Marsteller, Alexander ^[1]; Böttcher, Matthias ^[2]; Bornschein, Beate ^[3]; Enomoto, Sanshiro ^[4]; Fengler, Caroline ^[3]; Lebeda, Ondřej ^[5]; Machatschek, Moritz ^[3]; Priester, Florian ^[3]; Ráliš, Jan ^[5]; Röllig, Marco ^[3]; Röttele, Carsten ^[3]; Schlösser, Magnus ^[3]; Michal, Šefčík ^[5]; Sturm, Michael ^[3]; Vénos, Drahoslav ^[5]

Karlsruhe Inst. of Technology (KIT) (Germany); Univ. of Washington, Seattle, WA (United States); OSTI
Westfälische Wilhelms-Universität Münster (Germany)
Karlsruhe Inst. of Technology (KIT) (Germany)
Univ. of Washington, Seattle, WA (United States)
Czech Academy of Sciences (CAS) (Czech Republic)

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.

View Accepted Manuscript (DOE)

Research Organization:: Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Univ. of Washington, Seattle, WA (United States); Duke Univ., Durham, NC (United States); University of North Carolina, Chapel Hill, NC (United States); Univ. of California, Santa Barbara, CA (United States); Carnegie Mellon Univ., Pittsburgh, PA (United States); Univ. of California, Oakland, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: FG02-94ER40818; FG02-97ER41020; FG02-97ER41033; FG02-97ER41041; SC0004036; SC0011091; SC0019304; AC02-05CH11231

OSTI ID:: 2422464

Journal Information:: Journal of Instrumentation, Journal Name: Journal of Instrumentation Journal Issue: 12 Vol. 17; ISSN 1748-0221

Publisher:: Institute of Physics (IOP)Copyright Statement

Country of Publication:: United States

Language:: English

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