Experimental Installation for Determination of Attenuation Coefficient of Permanent Magnetic Field by Protective Materials

The permanent magnetic field in addition to electromagnetic radiation has a significant effect on performance of devices. This is particularly true for highly sensitive precision measuring equipment, such as, example, magnetometers or photomultiplier tubes. In this regard new high-performance materials protection against fields and need be developed. purpose paper development hardware software complex high-precision determination attenuation coefficient certification protective materials. describes an experimental installation determining the using coatings standard package electronic equipment. ensures uniform flow measurement volume. advantage device ability measure three coordinates due use pairs Helmholtz coils three-dimensional Hall sensor. will enable control all directions, simulating real operating conditions devices that require from influences. addition, movable positioning system makes it possible compensate Earth's field, which increases accuracy estimating by weak field. An alternative capabilities test evaluate compatibility. Experimental results work includes tube made electrolytically deposited permalloy sheet annealed permalloy. Thus, annealing closed circuit degree weakening shown. It been demonstrated causes increase permeability promotes effective (up 1 mT). with induction mT more, provided circuit.