| 摘要 |
A hollow, elongated support, adapted to have a cooling medium circulating therethrough, has a plurality of stabilized superconductor assemblies spirally wrapped therearound, with a pitch of 1 to 30 cm. per winding; additionally, preferably, a second layer of windings of nonsuperconductive wire with a pitch of about half of the pitch of the superconductor assemblies is wrapped around the outside of the spiralled superconductor assemblies. A good heat-conductive, nonmagnetizable bonding medium bonds the stabilized superconductor assembly and, if used, the layer of wires of nonsuperconductive material to the support tube. In the method of manufacture, lengths of hollow longitudinal support tubes are joined to form a continuous fluidtight tube to which the superconductor assembly wires are first applied, then, if desired, the nonsuperconductive wires are wrapped therearound with a direction of twist opposite to that of the superconductor wires, the wires being placed closely adjacent each other so that, upon immersion into a melt of good heat-conductive, nonmagnetizable material, the fluid material will flow by capillary action in the interstices between the wires to form a composite, encapsulated whole.
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