Method and apparatus for magnetic field measurement

Details Method and apparatus for magnetic field measurement Method and apparatus for magnetic field measurement

G - Physics

01

R

G01R 33/035 (2006.01)

Patent

CA 2449131

The invention provides for measurement of an actual magnitude of an applied magnetic field, rather than providing a value of magnetic field which is relative to an unknown quiescent value. In particular, by providing a SQUID (100) having an effective area which varies in response to applied flux, an absolute value of magnetic field can be determined due to the change in effective area of the SQUID (100).

L'invention concerne un procédé et un appareil permettant de mesurer l'amplitude réelle d'un champ magnétique appliqué plutôt que de définir une valeur de champ magnétique correspondant à une valeur de repos inconnue. L'invention concerne en particulier un dispositif supraconducteur à interférences quantiques (SQUID) (100) comprenant une zone efficace qui varie en fonction du flux appliqué. La valeur absolue du champ magnétique peut être déterminée grâce au changement survenant dans la zone efficace de ce SQUID (100).

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