Electric dipole moment searches: Effect of linear electric field frequency shifts induced in confined gases, II

TL;DR

This paper analyzes how linear electric field frequency shifts in confined gases can cause systematic errors in electric dipole moment searches, especially relevant for high-sensitivity neutron edm experiments.

Contribution

It provides an analytic expression for frequency shifts in rectangular storage vessels and discusses their impact on neutron edm experiments at SNS.

Findings

Analytic form for frequency shifts in rectangular vessels

Implications for systematic errors in neutron edm measurements

Guidance for experimental design to mitigate shifts

Abstract

The next generation of particle edm searches will be at such a high sensitivity that it will be possible for the results to be contaminated by a systematic error resulting from the interaction of the motional (E x v/c) magnetic field with stray field gradients. In this paper we extend previous work to present an analytic form for the frequency shift in the case of a rectangular storage vessel and discuss the implications of the result for the neutron edm experiment which will be installed at the SNS (Spallation Neutron Source) by the LANL collaboration