Gradient wound trim coil for trimming a primary pickup coil

Details Gradient wound trim coil for trimming a primary pickup coil Gradient wound trim coil for trimming a primary pickup coil

1974-01-21

1976-06-22

Pellinen, A. D.

Electricity: power supply or regulation systems

Remote sensing

324 43G, G01R 3302

Patent

active

039654117

ABSTRACT:
One or more primary superconductive magnetic field pickup coils are trimmed by means of one or more auxiliary super-conductive trim coils coupled to a magnetic flux sensor for sensing the magnetic flux coupled to the sensor by said primary and auxiliary coil circuits. The trim coils preferably each have their respective magnetic axes oriented orthogonally to each other for independent adjustment. The trim coils are wound in the gradient configuration and an adjustable superconductive magnetic shield is provided surrounding each of the respective trim coils for varying the coupling between the respective trim coil and the magnetic field by varying the position of the magnetic shield relative to a null or symmetric position relative to the trim coil. In a preferred embodiment, there are three mutually orthogonal trim coils.

REFERENCES:
patent: 3582779 (1971-06-01), Bloom

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