Pickup coil for measurement of magnetic fields

Details Pickup coil for measurement of magnetic fields Pickup coil for measurement of magnetic fields

G - Physics

01

R

G01R 33/02 (2006.01) G01R 33/022 (2006.01)

Patent

CA 2057454

The invention concerns a pickup coil to measure com- ponents of gradients. The coil consists of two pairs of loops connected in series; these pairs are then connected in parallel. The coil so formed has a low inductance, and no shielding currents are induced to superconducting coils in homogeneous magnetic fields. One coil can be employed to measure several field components simul- taneously when the coil is coupled to current sensing elements, for example to SQUIDs, so that the current components measured by the sensing elements do not couple magnetically because of the symmetry. This can be accomplished by connecting the said elements be- tween terminals between the loops (5, 6 and 7, 8). The inductance of this coil can be further reduced by subdi- viding the loops into party connected in parallel.

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