A Study of Enclosed Magnetic Shielding Room by Simulation

MSR (magnetically shielded room) is one of the most effective methods of shielding the magnetic field of the environment. The design of a cuboid enclosed magnetic shielding room (MSR), which mainly made up of permalloy and aluminum, is optimized by an electromagnetic simulation software called ANSYS Maxwell. And the effects of the magnetic shielding room's parameters on the shielding effectiveness (SE) are studied. As far as we know, the presented results show that SE is inversely proportional to the size of the shielding space, but proportional to the thickness of each layer, and the interval between two layers exists an optimal value. An equivalent circuit model demonstrates the corresponding interpretations of the above results.