Development of Nb₃Sn Conductors for A. C. Use

Abstract

The Nb₃Sn superconducting wire for a. c. use was developed by in-situ method. In order to decrease a. c. loss, the diameter of the in-situ composite cores were very fine by increasing the core number. The conductor was made of this wire by cabling. Characteristics of the 2nd cabling conductors and the 3rd cabling conductors with a. c. current were tested by the short sample. The a. c. quench current value of the 3rd cabling conductor was 5.8kArms at 0.5T.