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AssigneeAventis Research & Technologies GmbH & Co. KG
InventorsJUERGEN EHRENBERG, JOACHIM BOCK, GUENTER BROMMER
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The invention relates to a process for the production of a superconducting coil, wherein a) a shaped article made of a material which is superconducting, or becomes superconducting under further heat treatment, is optionally coated externally with a reinforcement, b) the shaped article, if it is not provided with a suitable cavity, is processed to form a suitable hollow article, c) the optionally externally reinforced hollow article is optionally firmly connected internally to a support acting as an internal reinforcement, d) the hollow article is then provided with incisions or cuts substantially in the form of the future coil geometry, e) the incisions or cuts are filled with a reinforcing material, preferably from the outside, and/or a reinforcing material is externally applied to the shaped article, f) the optional support acting as an internal reinforcement is optionally removed substantially or fully from the interior of the hollow article, g) in the case of incisions, the hollow article is internally machined until the incisions become cuts, h) the hollow article is then optionally coated on the inside with a reinforcing material, i) it being possible for the cuts to be filled with a reinforcing material, j) the reinforcement is partially, substantially or fully removed externally or internally from the hollow article, k) it being possible for the filling of the cuts to be retained substantially or fully. The invention further relates to a superconducting coil, which is produced correspondingly and has a low AC loss, or is strongly textured and, in doing so, is oriented in such a way that the platelet planes are aligned substantially in the direction of the coil profile, the coil being machined from a bulk superconducting piece.
A process for the production of a superconducting coil, wherein
The process as claimed in one of the preceding claims, wherein the electrical connection surfaces optionally have any reinforcing material removed and are coated or covered with a metallic, electrically conductive material, preferably a silver alloy.
The process as claimed in one of the preceding claims, wherein a shaped article that is textured in the direction of the flow of current through the coil is used.
The process as claimed in one of the preceding claims, wherein a shaped article that has been produced using a molten casting method, in particular a centrifugal casting method, is used.
The process as claimed in one of the preceding claims, wherein the incisions are made in the shaped article so that the resulting shaped article has the geometry of a single-, double- or multifilament coil.
The process as claimed in one of the preceding claims, wherein at least two superconducting coils with different diameters are put one inside the other and superconductively assembled to form a double- or multifilament coil.
A superconducting coil made of a superconductor material that is strongly textured and, in doing so, is oriented in such a way that the platelet planes that correspond to the plane of maximum superconductivity are aligned substantially in the direction of the coil profile, the coil being machined from a bulk superconducting piece.
A superconducting coil having low AC loss, with a distance from one winding to the next winding, or from one filament to the next filament, of at least 0.15 mm.
Dependencies are inferred from the claim text.