Patent ID: 6970062
Filing Date: 2005-11-29
Classification: G01R,H01F,Y10S

Abstract:
1. A magnetic resonance imaging system having an open superconducting magnet system, which includes: a number of horizontally oriented superconducting coils, each superconducting coil being disposed in an associated local reservoir, each of the local reservoirs including an overflow edge, which is located at or above a lower side of the associated superconducting coil; a cryogenic container for containing a liquid cooling medium for cooling the superconducting coils which superconducting coils are located with their associated local reservoirs within the cryogenic container; a recondensor disposed at a top of the cryogenic container for liquifying cooling medium evaporating from the container; and a circuit for cascading the liquid cooling medium liquefied by the recondensor from local reservoir to local reservoir such that the cooling medium liquid flows form the overflow edge of one of the local reservoirs to a lower of the local reservoirs and from the overflow edge of the lower local reservoir to a still lower local reservoir.