Active shielding in measurements of DC near biomagnetic fields

Nowak, H.; Haueisen, Jens; Ziolkowski, Marcin; Resmer, Frank; Schuler, Jeanine R; Gießler, F.

doi:10.1109/iembs.2001.1019524

2001 Conference Proceedings of the 23rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society

DOI: 10.1109/iembs.2001.1019524

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Active shielding in measurements of DC near biomagnetic fields

H. Nowak

Jens Haueisen²,

Marcin Ziolkowski³

et al.

Abstract: Abstract-Measurements of DC near biomagnetic fields are disturbed by low frequency noise, that are not reduced sufficiently by most of the magnetically shielded rooms or gradiometers. An effective SQUID based active shielding system has been developed and installed at the magnetically shielded rooms in the Biomagnetic Center of the University Jena to reduce external low frequency disturbances. A reduction of the magnetic noise of about 23 dB could be achieved at 50 mHz.

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Dynamic shielding of the magnetic fields

Baltag¹,

Costandache²,

Rau³

et al. 2010

AECE

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The paper presents a comparative study of the methods used to control and compensate the direct and alternative magnetic fields. Two frequently used methods in the electromagnetic compatibility of the complex biomagnetism installations were analyzed. The two methods refer to the use of inductive magnetic field sensors (only for alternative fields) and of fluxgate magnetometers as active transducers which measures both the direct and alternative components of the magnetic field. The applications of the dynamic control of the magnetic field are: control of the magnetic field of the military ships, control of parasite magnetic field produced by power transformers and the electrical networks, protection of the mass spectrometers, electronic microscopes, SQUID and optical pumping magnetometers for applications in biomagnetism

show abstract

Dynamic shielding of the magnetic fields

Baltag¹,

Costandache²,

Rau³

et al. 2010

AECE

View full text Add to dashboard Cite

show abstract

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Active shielding in measurements of DC near biomagnetic fields

Cited by 1 publication

References 6 publications

Dynamic shielding of the magnetic fields

Dynamic shielding of the magnetic fields

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