Magnetic field correction system

A system for manipulating a magnetic field, the system comprising:

• a magnet for generating a first magnetic field;
• at least one substrate structure positioned generally proximate to the magnet, each said substrate structure mounting N groups of substantially straight parallel wires, wherein N is the integer number of groups greater than one;
• and
• an electrical controller, connected electrically to the wires in each group, for regulating a current in each wire, wherein first ends of the wires of at least one of the groups are separately connected electrically with the controller such that the electrical current in each wire in the group may be independently regulated by the controller;
• wherein each group comprises at least four wires disposed on or in the substrate structure;
• wherein the groups of wires are arranged in a plurality of orientations in relation to each other, with any one group defining an angle of approximately 180°/N with a second group most closely aligned with the one group;
• and
• wherein regulation of current in the wires produces a second magnetic field which affects an alteration in the magnetic field generated by the magnet.

An apparatus for use with a magnet, the apparatus comprising:

• a substrate structure disposed in a magnetic field generated by said magnet;
• N groups of wires mounted on or in the substrate, wherein N is an integer number of groups greater than one;
• each group of wires having a principal axis, the wires of the group disposed substantially parallel to the principal axis of the group;
• each wire having a first end and a second end, and each wire in a group being mounted linearly straight between electrical connections at its first and second ends;
• an electrical controller, connected electrically to the wires in each group, for regulating a current in each of the wires in the group;
• wherein the first ends of the wires in each of the groups are separately connected electrically with the controller such that electrical current in each wire in the group may be independently regulated by the controller;
• and
• wherein the groups of wires are arranged in the substrate structure in a plurality of different spatial orientations, with the principal axis of any one group defining an angle of approximately 180°/N with the principal axis of a second group most closely aligned with the one group, wherein the electrical connections are disposed on more than two edges of the substrate structure.