Use of Mirnov Coil Array in Detection of Magneto-Coriolis Waves

It is the goal of the Princeton Magnetorotational Instability (MRI) experiment to better understand the process by which angular momentum is transported in accretion disks.~ The MRI experiment is a liquid gallium Taylor-Couette experiment with independently spinning disks at the ends and an applied axial magnetic field.~ Under turbulent conditions and a strong enough magnetic field, magneto-Coriolis waves are observed using a 2-D Mirnov coil array and global mode analysis.~ A new array has been constructed and added to the previous array, and the positions of the new coils have been chosen to increase the mode resolution.~ Discussion of the observed waves using both the new and old Mirnov coil arrays, along with spectra of the fit modes will be presented.