Patent ID: 11927651
Assignee: JULIUS-MAXIMILIANS-UNIVERSITAET WUERZBURG
Field: Measurement (Instruments)
Classification: CPC G  A | IPC A  G

Claim 6:
7. The system of claim 4, wherein the magnetic field distribution comprises a field free line, and wherein said current controller is configured to drive the inner coil and the outer coil of each of said circumferentially distributed coil assembly sectors with counterrotating currents to generate
a first magnetic field aligned perpendicular to said central coil assembly axis at least in a first point on said central coil assembly axis, wherein the first magnetic field has a first orientation and is associated with the inner coils, and
a second magnetic field aligned perpendicular to said central coil assembly axis at least in a second point on said central coil assembly axis, wherein the second magnetic field has a second orientation, which is inverse to said first orientation, and is associated with the outer coils,
wherein said first point and said second point are spaced along said central coil assembly axis, and wherein said field free line is arranged between said first point and said second point.