Abstract: The superconducting device has a cryogenic system to whose first refrigerant there is thermally coupled a superconducting unit and a superconducting switching path, which is electrically connected to said unit and is to be activated thermally by a heater, of a superconducting switch. A first pipeline to whose end the superconducting switching path is thermally coupled is to be connected to a refrigerant space of the superconducting unit. In order to ensure reliable heating of the switching path upon activation of the heater, the first pipeline is to have a cross sectional constriction impeding the exchange of heat with the refrigerant space. Moreover, the switching path is to be thermally coupled to a comparatively higher temperature level via a further, closed pipeline with a second refrigerant.

Abstract: A pulsed magnetic field is generated by a device having a magnet to be operated in pulse operation which contains at least one superconductive refrigerant-free winding that is disk-shaped or saddle-shaped. Also included is a refrigerating unit which has at least one cold head. A line system, having a refrigerant circulating in it according to a thermosiphon effect, thermally couples the winding to the cold head. The line system has a plurality of separate pipes lying next to one another. The pipes, open onto a common refrigerant distributor and closed at the other end, are thermally coupled to the surface of the disk-shaped or saddle-shaped winding.

Abstract: A superconducting device has a cryosystem to whose cryogenic medium a superconducting appliance and a superconducting switching path (which is electrically connected to it and can be activated thermally by means of a heater) of a superconducting switch are thermally coupled. A pipeline, to whose end the superconducting switching path is thermally coupled, is connected to a coolant area of at least one superconducting appliance. To ensure reliable heating of the switching path when the heater is activated, the pipeline has a cross-sectional constriction which impedes the heat exchange with the coolant area.

Abstract: The invention relates to a superconductive device containing a rotor that can be rotated about an axis of rotation and that comprises a superconductive winding in a winding support. Said winding support has a central cavity, into which two fixed thermal tubes project axially. One of said tubes forms a cooling finger that is closed at the end and contains a second coolant with a higher condensation temperature. The other tube supplies a first cooling with a lower condensation temperature to the central cavity and evacuates said coolant from the cavity. To condense the coolants, the tubes lead to a refrigeration unit, situated outside the rotor and equipped with a refrigeration head and a condenser device.

Abstract: The machine has a rotor with a ferromagnetic pole core, which is fitted with a winding arrangement composed of high-Tc superconductor material and surrounds a central internal area, via which the cooling power must be provided in order to cool the winding arrangement. In order to thermally couple the winding arrangement to the internal area, the pole core is composed of a material which contains at least 70% by weight of nickel, and preferably pure nickel.