Magnetic-field uniformity in neutron electric-dipole-moment experiments

Abel, C, Ayres, N J, Baker, T, Ban, G, Bison, G, Bodek, K, Bondar, V, Crawford, C B, Chiu, P-J, Chanel, E, Chowdhuri, Z, Daum, M, Dechenaux, B, Emmenegger, S, Ferraris-Bouchez, L, Griffith, W C and Harris, P G (2019) Magnetic-field uniformity in neutron electric-dipole-moment experiments. Physical Review A. ISSN 1050-2947 (Accepted)

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Magnetic 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.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Subjects: Q Science > QC Physics
Depositing User: Alice Jackson
Date Deposited: 09 Apr 2019 07:56
Last Modified: 09 Apr 2019 07:57

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