Speaker
Description
A next generation cryogenic neutron electric dipole moment (EDM) experiment based on an idea to combine ultracold neutron (UCN) production in superfluid 4He with real-time measurement of the precession frequency using the capture of polarized neutrons on polarized 3He. A previous version of the experiment utilizing the Fundamental Neutron Physics Beamline (FnPB) at the Oak Ridge National Laboratory Spallation Neutron Source (SNS), was designed and partly constructed when the project was cancelled in late 2023. I will describe a sequence of steps planned to demonstrate key elements of the measurement technique and the associated technology as part of a new experiment, nEDM superfluid or nEDMSF, that is being undertaken in association with collaborators at European institutions. The long-term goal of this new experiment is to reach toward the 10−29 e·cm level for the nEDM using a beamline having a higher flux than that at the SNS, for example that at the European Spallation Source (ESS).
