Design of Desktop Magnetic Shielding System with Degaussing Coil

抄録

In our previous report, we proposed a magnetic shielding system for the calibration of high-sensitivity magnetometers. This system consists of inner hexagonal tubes and an outer cylinder. The hexagonal tubes have a double-layered structure, an opening and an advantage in axial shielding performance. The cylinder has openings and an advantage in transverse shielding performance. Compared with conventional cylindrical shields, our system is not capable of equipping a toroidally wound coil which can be used for degaussing the magnetic layers. The purpose of this paper is to reduce the residual magnetic flux density with a degaussing coil. Instead of the outer cylinder, we design an outer hexagonal tube. A solenoid-like coil is installed between the inner and outer tubes to effectively provide a degaussing field to the magnetic materials. For practical use, we also take care of both the total weight and shielding performance.