Patent ID: 6563316
Filing Date: 2003-05-13
Classification: G01R,H02H,Y02E

Abstract:
A magnet configuration having an actively shielded superconducting magnet coil system for generating a magnetic field in a direction of a z axis in a working volume disposed on the z axis about z=0, the configuration comprising:a radially inner partial coil system; a radially outer partial coil system, said radially inner and outer coil systems being electrically connected in series and arranged coaxially with respect to each other, each of said inner and outer coil systems generating a magnetic field of opposite direction along the z axis in the working volume; a plurality of protective elements for protecting the superconducting magnet coil system in case of a superconductivity breakdown or quench, wherein the magnet coil system defines a superconducting current path which is divided into sections (A1, . . . , An) each of which is electrically connected in parallel to at least one of said protective elements, with at least one of said sections having windings of said radially inner and said radially outer partial coil systems; and at least one additional closed current path (C3) said additional path having a non-vanishing areal winding number and a non-zero inductive coupling LAi&rlarr;C3 to at least one of said sections Ai.