Journal article
Measurement of the inhomogeneity of the KATRIN tritium source electric potential by high-resolution spectroscopy of conversion electrons from 83mKr
- Abstract:
- Precision spectroscopy of the electron spectrum of the tritium β-decay near the kinematic endpoint is a direct method to determine the effective electron antineutrino mass. The KArlsruhe TRItium Neutrino (KATRIN) experiment aims to determine this quantity with a sensitivity of better than 0.3eV (90% C.L.). An inhomogeneous electric potential in the tritium source of KATRIN can lead to distortions of the β-spectrum, which directly impact the neutrino-mass observable. This effect can be quantified through precision spectroscopy of the conversion-electrons of co-circulated metastable 83mKr. Therefore, dedicated, several-weeks long measurement campaigns have been performed within the KATRIN data taking schedule. In this work, we infer the tritium source potential observables from these measurements, and present their implications for the neutrino-mass determination.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 1.2MB, Terms of use)
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- Publisher copy:
- 10.1140/epjc/s10052-025-14354-z
Authors
+ European Research Council
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- Funder identifier:
- https://ror.org/0472cxd90
- Grant:
- 852845
- Programme:
- Horizon 2020 research and innovation programme
+ Helmholtz-Fonds e.V.
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- Funder identifier:
- https://ror.org/055y1ne20
- Grant:
- W2/W3-118
+ Thailand Science Research and Innovation
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- Funder identifier:
- https://ror.org/000025p04
- Grant:
- B39G670017
+ United States Department of Energy
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- Funder identifier:
- https://ror.org/01bj3aw27
- Grant:
- DE-SC0011091
- DE-AC02-05CH11231
- DE- FG02-97ER41041
- DE-FG02-94ER40818
- DE-FG02-97ER41020
- DE-SC0004036
- DE-SC0019304
+ Deutsche Forschungsgemeinschaft
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- Funder identifier:
- https://ror.org/018mejw64
- Grant:
- EXC 2094-390783311
- GRK 2149
- SFB-1258
- Publisher:
- SpringerOpen
- Journal:
- European Physical Journal C More from this journal
- Volume:
- 85
- Issue:
- 7
- Article number:
- 757
- Place of publication:
- France
- Publication date:
- 2025-07-09
- Acceptance date:
- 2025-05-22
- DOI:
- EISSN:
-
1434-6052
- ISSN:
-
1434-6044
- Pmid:
-
40656865
- Language:
-
English
- Keywords:
- Pubs id:
-
2332134
- Local pid:
-
pubs:2332134
- Source identifiers:
-
W4412176962
- Deposit date:
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2026-04-20
- ARK identifier:
Terms of use
- Copyright holder:
- Acharya et al.
- Copyright date:
- 2025
- Rights statement:
- © The Author(s) 2025. Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.
- Licence:
- CC Attribution (CC BY)
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