Abstract
nEDMSF aims to measure the neutron electric dipole moment (dn) with unprecedented precision. In this paper we explore the experiment's sensitivity when operating with an implementation of the critical dressing method in which the angle between the neutron and Helium-3 spins (ϕ3n) is subjected to a square modulation by an amount ϕd (the "dressing angle"). Several parameters can be tuned to optimize sensitivity. We find roughly 10% improvement over a previous estimate, resulting primarily from the addition of a waiting period between the π/2 pulse that initiates dn-driven ϕ3n growth and the start of ϕ3n modulation. We find negligible further improvement by allowing ϕd to vary continuously over the course of a run, and no degradation resulting from the addition of an in situ background measurement into each ϕ3n modulation sequence. A complete simulation confirms a 300 live-day sensitivity ofσ = 1.45×10-28e ·cm. At this level of sensitivity, σϕ3n0 = 1 mrad precision on the initial n/3He angle difference is not negligible.
