Recent Progress of Magnetic Field Coils for the Neutron Electric Dipole Moment Experiment at Los Alamos National Laboratory

The neutron electric dipole moment (nEDM) experiment at Los Alamos National Laboratory (LANL) aims to search for a nonzero permanent electric dipole moment of the neutron, with a targeted statistical uncertainty of 2 X 10^-27e.cm after one full year of data taking. The experiment employs ultracold neutrons stored in a double-cell configuration and uses Ramsey’s method of separated oscillatory magnetic fields to measure the difference in neutron precession frequencies when the electric and magnetic fields are aligned parallel and antiparallel to each other. Ramsey’s method requires at least two primary magnetic fields in the region of the cells: a uniform holding field and a spin flip field. This presentation will discuss the design of the spin-flip coil and provide updates on the recent progress of the holding-field coil for the LANL nEDM experiment.