Measurement of the shielding factor of the Magnetically Shielded Room for the nEDM experiment at Los Alamos National Laboratory

The neutron Electric Dipole Moment (nEDM) experiment at Los Alamos National Laboratory is designed to search for the nEDM at the level of 10^-27 e*cm. The experiment will make use of the Ramsey method of separate oscillatory fields at room temperature. To minimize statistical and systematic uncertainties, the experiment is enclosed in a five layer Mu-metal magnetically shielded room (MSR). The performance of the MSR can be characterized by the shielding factor, the ratio of the magnetic field measured in the absence of the MSR to the magnetic field measured inside the MSR. A set of solenoidal coils was used to produce a magnetic field and construct a new measurement of the shielding factor to compare with previous measurements of different methods. Results of the new shielding factor measurement will be presented.