Abstract: A superconductor system cooling apparatus, the apparatus comprising a casing, a solid coolant and a cooling circuit; wherein the cooling circuit comprises a heat exchanger, and a connector to couple the heat exchanger to a pre-cool loop of the superconductor system; wherein the cooling circuit further comprises a heat exchange medium to transfer heat between the solid coolant and the superconducting system.

Abstract: In a superconducting magnet arrangement having main magnet windings, a first switch is connected between first and second ends of the main magnet windings, an induction coil has a first end connected to the first end of the main magnet windings and having a second end connected through a second switch to the second end of the main magnet windings, and a further coil capable of magnetically coupling with the induction coil, current flowing in the main magnet windings is adjusted by flux pumping.

Abstract: A cryogen tank in thermal and mechanical attachment with the equipment to be cooled. Direct thermal conduction between the cryogen and the equipment provides the required cooling. The tank is preferably arranged so as to lie within an existing profile of the cooled equipment, and to be relatively small as compared to known cryogen tanks.

Abstract: The present provides a cryogenic thermal battery arrangement for maintaining a superconducting magnet coil or similar apparatus at cryogenic temperature for a required shipping period, such as thirty days, without consuming a significant amount of costly cryogen. According to another aspect, the invention allows extended shipping periods without incurring excessive costs.

Abstract: A quench protection circuit for a superconducting magnet, comprises at least one heater associated with a corresponding coil of the superconducting magnet. The at least one heater is arranged to be driven by an inductor which is connected in series with it and is arranged to derive a voltage from variation in a magnetic field of the superconducting magnet. The at least one heater and the inductor are arranged in a series circuit which further comprises a non-linear positive temperature coefficient resistors.

Abstract: An electromagnet comprising a plurality of coils of superconductive material, monolithically embedded in an embedding material, which is solid at the temperature of operation of the superconductive electromagnet, and a method for producing an electromagnet comprising a plurality of coils of superconductive material, comprising the steps of winding coils of superconductive material, retaining the coils at predetermined relative positions, and monolithically embedding the plurality of superconducting coils in an embedding material, which is solid at the temperature of operation of the superconductive electromagnet.

Abstract: A cryostat for transporting cooled equipment at an upper cryogenic temperature, the cryostat being arranged to cool the cooled equipment by a working cryogen which boils at a lower cryogenic temperature, comprising a vacuum container surrounding the cooled equipment and defining a nominally evacuated layer between the vacuum container and the cooled equipment. Means are provided to reduce contamination of the nominally evacuated layer by a vacuum contaminant which is present in gaseous form within the evacuated layer at the upper cryogenic temperature, but which is retained in liquid or solid form at the lower cryogenic temperature.

Abstract: The present invention relates to the mounting of magnet coils as used in Nuclear Magnetic Resonance systems. In particular, the mounting scheme is relevant to gradient magnet assembly of such systems. Using the present invention hard contact between gradient magnet assembly and a cryostat does not occur. This allows a reduction in the transmission of mechanical vibrations and any resultant disturbance. Furthermore vibration of the gradient magnet assembly is reduced enabling improved system performances.

Abstract: The present invention relates to the mounting of magnet coils as used in Nuclear Magnetic Resonance systems. In particular, the mounting scheme is relevant to gradient magnet assembly of such systems. Using the present invention hard contact between gradient magnet assembly and a cryostat does not occur. This allows a reduction in the transmission of mechanical vibrations and any resultant disturbance. Furthermore vibration of the gradient magnet assembly is reduced enabling improved system performances.