Neutron EDM measurements using the Intense Ultracold Neutron Source at Los Alamos

The Electric Dipole Moment (EDM) of the neutron is a probe for the violations in the combined Charge-conjugate and Parity-reversal symmetry (CP). Many new theories beyond the Standard Model, which aim to unify the fundamental forces and solve the problem of Baryon Asymmetry of the Universe, also predict sizable EDM just lurking around the corner for discovery. However, the low density of UCN limits the worldwide progress of current nEDM experiments; existing facilities have not been able to deliver significantly higher UCN flux to experiments. We have been constructing an apparatus to take advantage of the opportunity of the unique LANL UCN facility: With the intense output from the LANL UCN source, the apparatus aims to perform a nEDM search at the 10$^{-27}$e-cm level of sensitivity. The upgraded LANL UCN source has enabled the most precise neutron lifetime measurement in the UCNtau experiment. A separate beamline has been added to allow the simultaneous operation of multiple experiments. The LANL nEDM experiment will apply Ramsey's separated oscillatory field method to measure the precession frequency of the neutron under a small, precisely controlled, static magnetic field. I will report the status of this effort.