Patent ID: 8265722

Claim:
A superconducting wire comprising: a diffusion preventing tube having an outer circumferential surface in close contact with an inner circumferential surface of a stabilizing tube; a plurality of modules collectively arranged within the diffusion preventing tube, the modules having a plurality of niobium filaments arranged at a copper matrix of a periphery of a tin rod positioned at a central part of a copper rod; and a plurality of spacers inserted into inner spaces of the diffusion preventing tube, wherein the superconducting wire is manufactured by collectively arranging the modules within the diffusion preventing tube, inserting the spacers into inner spaces of the diffusion preventing tube, and drawing the modules and the spacers, and wherein one spacer is inserted into each space formed between the diffusion preventing tube and the modules as well as between the modules, wherein a spacer inserted between the diffusion preventing tube and the modules or between three modules is either a tin/copper spacer having a tin or a tin alloy rod inserted into a central part of a copper or copper alloy rod or is a copper or copper alloy spacer, and wherein a spacer inserted between four modules is a tin/copper spacer having a tin or tin alloy rod inserted into a central part of a copper or copper alloy rod.