Magnetic-field.pdf (724.15 kB)
Magnetic-field uniformity in neutron electric-dipole-moment experiments
journal contribution
posted on 2023-06-09, 17:31 authored by Christopher Abel, N J Ayres, T Baker, G Ban, G Bison, K Bodek, V Bondar, C B Crawford, P-J Chiu, E Chanel, Z Chowdhuri, M Daum, B Dechenaux, S Emmenegger, L Ferraris-Bouchez, Clark GriffithClark Griffith, Philip HarrisMagnetic field uniformity is of the utmost importance in experiments to measure the electric dipole moment of the neutron. A general parametrization of the magnetic field in terms of harmonic polynomial modes is proposed, going beyond the linear-gradients approximation. We review the main undesirable effects of non-uniformities: depolarization of ultracold neutrons, and Larmor frequency shifts of neutrons and mercury atoms. The theoretical predictions for these effects were verified by dedicated measurements with the single-chamber nEDM apparatus installed at the Paul Scherrer Institute.
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Publication status
- Published
File Version
- Accepted version
Journal
Physical Review AISSN
1050-2947Publisher
American Physical SocietyExternal DOI
Issue
4Volume
99Page range
042112-1-15Department affiliated with
- Physics and Astronomy Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2019-04-09First Open Access (FOA) Date
2019-04-09First Compliant Deposit (FCD) Date
2019-04-08Usage metrics
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