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Improvement of the properties of an eddy current magnetic shield with active compensation

1987; IOP Publishing; Volume: 20; Issue: 2 Linguagem: Inglês

10.1088/0022-3735/20/2/007

2051-5685

Jaakko Malmivuo, Jukka Lekkala, P Kontro, L Suomaa, H Vihinen,

Atomic and Subatomic Physics Research

The authors have improved the properties of their eddy current shield by equipping it with an active compensation system to cancel the static and low-frequency magnetic field. The performance of the compensation system is measured very accurately. These measurements and the measurement of biomagnetic fields show that an eddy-current shield with an active shielding is a practical solution for clinical biomagnetic measurements because of its low cost and the small space it needs.