Cable shaped cryogenically cooled stabilized superconductor

Claim 1

In a cable shaped cryogenically stabilized heavy current superconductor structure including several superconducting elements which contain wires of superconductive material embedded in a matrix material of predetermined electric conductivity; stabilizing elements of a thermally and electrically highly conductive material which is normally conducting at the operating temperature of the superconductor structure extending parallel thereto, the electric conductivity of said stabilizing elements being substantially higher in the normally conducting state of the heavy current superconductor than that of the matrix material of the superconducting elements; and a support body of a material of relatively low thermal and electric conductivity, on which said stabilizing elements and said superconducting elements are fastened, the improvement comprising: the stabilizing elements being arranged physically separated at a predetermined spacing from the respective adjacent superconducting elements so that only a poorly heat conducting connection and moderate ohmic coupling is provided between said stabilizing elements and superconducting elements, and the spacings so formed between adjacent superconducting elements and the stabilizing elements being, at least largely, filled with a cryogenic coolant.