First-order high-TC SQUID gradiometer

SQUID gradiometers are attractive for magnetic field measurements in noisy environments. A first-order planar gradiometer has been designed and fabricated. The layout of the planar gradiometer used to have two symmetric pickup coils; however, our design adopted one compensation loop with the same si...

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Bibliographic Details
Published inPhysica. C, Superconductivity Vol. 468; no. 15-20; pp. 1946 - 1949
Main Authors KONG, X. Y, NAKATANI, Y, YUTANI, A, MAKI, T, ITOZAKI, H
Format Conference Proceeding Journal Article
LanguageEnglish
Published Amsterdam Elsevier Science 15.09.2008
Subjects
Exact sciences and technology
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Magnetic components, instruments and techniques
Magnetometers for magnetic field measurements
Physics
Magnetic field measurement
85.25.Am
SQUID devices
Magnetometers
85.25.Dq
SQUID Planar gradiometer
74.72.Bk
Superconducting film
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Summary:SQUID gradiometers are attractive for magnetic field measurements in noisy environments. A first-order planar gradiometer has been designed and fabricated. The layout of the planar gradiometer used to have two symmetric pickup coils; however, our design adopted one compensation loop with the same size as the SQUID loop at the symmetric position to reduce the imbalance caused by the SQUID. The gradient field resolution is up to 2.2 pT cm-1 Hz-1/2 (white noise) and 30 pT cm-1 Hz-1/2 at 1 Hz.
Bibliography:SourceType-Scholarly Journals-2
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ObjectType-Conference Paper-1
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SourceType-Conference Papers & Proceedings-1
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ISSN:0921-4534
1873-2143
DOI:10.1016/j.physc.2008.05.175