Speaker
Description
The TRIUMF ultracold advanced neutron (TUCAN) electric dipole moment (EDM) experiment aims to constrain the neutron's electric dipole moment by an order magnitude over the current sensitivity. The experiment employs a magnetically shielded Ramsey Resonance based EDM apparatus employing ultracold neutrons from a spallation based isopure Helium-II UCN source, currently under construction at TRIUMF. To this end, a magnetically shielded room (MSR) with a DC shielding factor of 1e5, will house the EDM apparatus. The EDM experimental volume is bathed in a 1 uT field with 1e-4 homogeneity and 1 pT stability. In this design, inhomogeneities (gradients) and the lack of stability of the applied magnetic fields are expected to be one of the leading sources of systematic errors in the measurement. This presentation will discuss recent R&D efforts toward developing the TUCAN MSR and its subsystems, magnetic field generation inside shielded volumes including self-shielded coils, and the set of custom precision magnetometers based on nonlinear magneto optical rotation in Cs.
