Speaker
Description
The TRIUMF UltraCold Advanced Neutron (TUCAN) Collaboration is developing a new room-temperature neutron electric dipole moment (nEDM) experiment, with the goal of achieving a measurement uncertainty of σ ≤ 1E-27 ecm, an order of magnitude below the current best limit. The challenge of modern nEDM measurements is in achieving the combination of long interaction times and high neutron densities necessary for a low statistical uncertainty. Efforts to overcome this challenge have largely focused on the use of ultracold neutrons (UCNs), which can be stored in a measurement cell for several minutes. To achieve the required UCN density, the TUCAN EDM experiment will utilize a new UCN source, using a unique combination of a spallation neutron source, warm heavy water and cold deuterium moderators, and a superfluid helium UCN converter. This source has undergone its first commissioning measurements in 2025. This presentation will discuss the TUCAN Collaboration's approach to measuring the nEDM, the results of the source commissioning, and the prospects for our nEDM measurement.