SUPERCONDUCTIVE CURRENT LEAD

摘要

PROBLEM TO BE SOLVED: To provide a superconductive current lead wherein a plurality of next-generation tape-shaped oxide superconductive wire materials are laminated to increase a current capacity so that a current equally flows in the wire materials.

SOLUTION: A low temperature side lead part 5 is configured such that conductor units 7 each of which has a plurality of tape-shaped superconductive wire materials laminated and grouped are arrayed and placed on the peripheral surface of a supporting member 6, and metal electrodes 9 arranged at both ends of the supporting member are conductively bonded to the conductive units 7. The tape-shaped wire material adapts the next-generation tape-shaped oxide superconductive wire material 10 which has a Y-/Ho-base oxide superconductive layer formed on a metal substrate via an intermediate layer. Between the end of the conductor unit and the electrode, a conductive spacer 11 is inserted whose surface is laid on the side of the oxide superconductive layer of each tape-shaped wire material. The conductive spacer is soldered to the oxide superconductive wire material and the electrode. A low-heat-conductive insulating spacer 12 formed of FRP is inserted into a space between the wire materials, excluding both-end bonded portions.

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