Patent ID: 6946936
Filing Date: 2005-09-20
Classification: H01F

Abstract:
1. A magnet system comprising: a superconducting main magnet coil, said main magnet coil having an ohmic resistance of zero or more during operation thereof; a first superconducting secondary coil connected in series with said main magnet coil; a second superconducting secondary coil connected in series with said first secondary coil and said main magnet coil; a first superconducting switch circuited to bridge at least said second secondary coil; a first primary coil inductively coupled to said first secondary coil; means for supplying said first primary coil with a first current; a second primary coil inductively coupled to said second secondary coil; and means for supplying said second primary coil with a second current, independent of said first current, wherein said first secondary coil, said second secondary coil, said first superconducting switch, said first primary coil, said first current means, said second primary coil and said second current means cooperate to form a flux pump for said main magnet coil.