PPC 2022: XV International Conference on Interconnections between Particle Physics and Cosmology

The Neutron Electric Dipole Moment Experiment at Oak Ridge National

8 Jun 2022, 14:45

15m

Parallel

Speaker

Cameron Blake Erickson (University of Illinois at Urbana Champaign)

Description

The search for additional CP-violating interactions generated by BSM physics motivates a strong experimental effort to measure the neutron electric dipole moment (nEDM). The nEDM@SNS experiment planned at the Spallation Neutron Source at Oak Ridge National Laboratory aims to achieve a sensitivity of $2-3\times {10}^{-28}$ e-cm, an improvement upon the current limit of $1x{10}^{-26}$ e-cm. This is accomplished through a novel combination of ultracold neutrons (UCNs) and a controlled, dilute mixture of superfluid ${}^4$He with spin polarized ${}^3$He. This talk will give a summary of the experiment and planned measurements of the ${}^3$He diffusion constant inside the superfluid – useful for the design of nEDM@SNS as well as other UCN experiments.

Presentation materials

BlakeErickson_PPC_2022.pdf