Spin transport coils for the nEDM@SNS experiment.

The neutron electric dipole moment is sensitive to BSM physics and is a probe of baryogenic processes. The nEDM@SNS experiment aims to lower the current measured bound on the nEDM by almost two orders of magnitude. The nEDM@SNS experiment relies on polarized He-3 as a comagnetometer and analyzer of the neutron spin precession. Polarized He-3 is introduced into the precession cell from an atomic beam source outside the apparatus's passive magnetic shield. This requires a system of electromagnetic transport coils to maintain polarization as the He-3 travels to the precession chamber. I will describe design, fabrication, and testing of these coils at the University of Kentucky.