Open AccessFrequency domain method of the search for the electric dipole moment in a storage ring
Author(s) -
A. Aksentev,
Y. Senichev
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1435/1/012026
Subject(s) - dipole , larmor precession , precession , physics , lorentz transformation , magnetic dipole , moment (physics) , electric dipole moment , lorentz factor , storage ring , computational physics , spin (aerodynamics) , quantum electrodynamics , magnetic field , classical mechanics , optics , quantum mechanics , beam (structure) , thermodynamics
A new method for searching for the electric dipole moment (EDM) of the deuteron and other nuclei is presented. When trying to measure the EDM in a storage ring environment, magnetic dipole moment (MDM) spin precession due to machine imperfections becomes the primary source of systematic error. The proposed method aims at providing a solution to the machine imperfection problemas well as circumventing the geometric phase error. The method is based on estimating the combined MDM + EDM spin precession frequency, in which the MDM contribution is due only to field imperfections. The MDM term is canceled in the final statistic by adding frequency estimates from cycles with counter-circulating beams. Spin precession rate depends on the particle’s effective Lorentz factor; the proposed method’s core feature is a procedure for equalizing the effective Lorentz factors of the clockwise and counter-clockwise circulating beams, thus enabling the cancelation.