Speaker
Description
The $^3$He/$^{129}$Xe co-magnetometer is a high precision experiment that can address a variety of fundamental questions including the measurement of the \textit{CP}-violating permanent electric dipole moment (EDM) of the $^{129}$Xe atom, looking for a violation of Lorentz Invariance, and searching for a spin-dependent \textit{P}- and \textit{CP}-violating nucleon-nucleon interaction mediated by Axions or axion-like particles. Next level $^3$He/$^{129}$Xe co-magnetometer experiments require improved magnetic conditions. Here, we report on the performance of a new Magnetically Shielded Room (MSR) consisting of three layers of Mu-metal with a thickness of 3~mm each, and one additional highly conductive copper-coated aluminum layer with a thickness of 10~mm. The MSR has a cubical shape with an accessible interior volume with an edge length of 2560~mm. An optimized degaussing (magnetic equilibration) procedure, and shielding factor and residual magnetic field measurements will be presented.
