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@inproceedings{senichev:rupac2021-tub03,
author = {V. Senichev and A.E. Aksentyev and A.A. Melnikov},
title = {{Methods and Systematic Errors for Searching for the Electric Dipole Moment of Charged Particle Using a Storage Ring}},
booktitle = {Proc. RuPAC'21},
pages = {44--47},
eid = {TUB03},
language = {english},
keywords = {dipole, storage-ring, proton, site, experiment},
venue = {Alushta, Russia},
series = {Russian Particle Accelerator Conference},
number = {27},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {09},
year = {2021},
issn = {2673-5539},
isbn = {978-3-95450-240-0},
doi = {10.18429/JACoW-RuPAC2021-TUB03},
url = {https://jacow.org/rupac2021/papers/tub03.pdf},
note = {https://doi.org/10.18429/JACoW-RuPAC2021-TUB03},
abstract = {{One of possible argument for CP-invariance violation is the existence of non-vanishing electric dipole moment (EDM) of elementary particles. To search for the EDM the BNL proposed to construct a special ring implementing the frozen spin mode in order to detect the EDM signal. Since systematic errors determine the sensitivity of a method, this article analyzes some major methods proposed for searching for the EDM from the point of view of this problem. The frequency domain method (FDM) proposed by the authors does not require a special accelerator for deuterons and requires spin precession frequency measurements only. The method has four features: the total spin precession frequency due both to the electric and the magnetic dipole moments in an imperfect ring in the longitudinal-vertical plane is measured at an absolute statistic error value of ~10⁻⁷ rad/sec in one ring filling; the ring elements position remain unchanged when changing the beam circulation direction from clockwise (CW) to counterclockwise (CCW); calibration of the effective Lorentz factor by means of spin precession frequency measurements in the horizontal plane is carried out alternately in each CW and CCW procedure; the approximate relationship between the spin precession frequency components is set to exclude them from mixing to the expected EDM signal at a statistical sensitivity level approaching 10⁻²⁹ e cm. The FDM solves the problem of systematic errors, and can be applied in the NICA facility.}},
}