Measurement of the inhomogeneity of the KATRIN tritium source electric potential by high-resolution spectroscopy of conversion electrons from $$\mathbf {^{83m}}$$Kr
- University of North Carolina
- Karlsruhe Institute of Technology (KIT)
- University of Münster
- Istituto Nazionale di Fisica Nucleare (INFN)-Sezione di Milano-Bicocca
- Politecnico di Milano, Dipartimento di Elettronica, Informazione e Bioingegneria; Istituto Nazionale di Fisica Nucleare (INFN)-Sezione di Milano
- Chulalongkorn University
- Carnegie Mellon University
- Czech Academy of Sciences
- Technical University of Munich
- University of Wuppertal
- University of Washington
- Massachusetts Institute of Technology
- Istituto Nazionale di Fisica Nucleare (INFN)-Sezione di Milano-Bicocca; Università di Milano-Bicocca
- University of North Carolina; Triangle Universities Nuclear Laboratory
- Max Planck Institute for Physics
- Suranaree University of Technology
- Technical University of Munich; Max-Planck-Institut für Kernphysik
- IRFU (DPhP & APC), CEA, Université Paris-Saclay
- Lawrence Berkeley National Laboratory
- University of North Carolina; Triangle Universities Nuclear Laboratory; Duke University
- Carnegie Mellon University; Washington and Jefferson College
- Universidad Autonoma de Madrid
- Humboldt-Universität zu Berlin
- Czech Academy of Sciences; Max Planck Institute for Physics
- University of North Carolina; Karlsruhe Institute of Technology (KIT)
- University of Münster; Humboldt-Universität zu Berlin
- University of Heidelberg
- Johannes-Gutenberg-Universität Mainz
- University of North Carolina; Triangle Universities Nuclear Laboratory; Also affiliated with Oak Ridge National Laboratory
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 0.3 eV (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.
- Research Organization:
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- Grant/Contract Number:
- SC0011091; AC02-05CH11231; FG02-97ER41041; FG02-94ER40818; FG02-97ER41020; FG02-97ER41033; SC0004036; SC0019304
- OSTI ID:
- 3004035
- Alternate ID(s):
- OSTI ID: 2572059
OSTI ID: 2583311
OSTI ID: 3001363
OSTI ID: 3001834
- Journal Information:
- European Physical Journal. C, Particles and Fields (Online), Journal Name: European Physical Journal. C, Particles and Fields (Online) Journal Issue: 7 Vol. 85; ISSN 1434-6052
- Publisher:
- Springer NatureCopyright Statement
- Country of Publication:
- United States
- Language:
- English