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Investigation of image charge induced vertical electric fields inside an asymmetric electrostatic quadrupole
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Investigation of image charge induced vertical electric fields inside an asymmetric electrostatic quadrupole
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Paper
Investigation of image charge induced vertical electric fields inside an asymmetric electrostatic quadrupole
2020
Overview
This paper presents studies with regards to an asymmetric electrostatic quadrupole profile, which helps suppressing image beam induced vertical electric fields. These fields need to remain orders of magnitude smaller than the radial electric field in storage ring electric dipole moment experiments. Otherwise, the coupling with the magnetic dipole moment dominates the spin precession, eventually leading to a false signal. Suppression performance of an optimized quadrupole profile is investigated for various beam offset and size configurations. With the optimum profile, the vertical electric field can be reduced by two orders of magnitude. Several centimeter range beam size and position offsets have been observed to have small effects on the field reduction. Besides the quadrupole elements, using non-magnetic conductor materials, this kind of a profile could be implemented at other sections of accelerators as well.
Publisher
Cornell University Library, arXiv.org
Subject
