Pulsed field losses in metal-filled superconducting multifilamentary braids

Abstract

This paper summarizes work on the application of metallic fillers to insulate and bond individual multifilamentary wires into a fully transposed conductor. As has been reported in earlier papers, conductors of this type have performed excellently in low‐frequency pulsed magnets, but become ``coupled'' at relatively low values of Ḃ , leading to high pulsed losses. In this paper data are presented on metallic and intermetallic insulated braids showing excellent performance and exhibiting losses comparable to those of organically insulated braid for rise times less than 10 kG/sec. These conductors are also able to achieve 90% of short sample critical current at Ḃ ≥ 200 kG/sec, although their losses are significantly higher at these high rates of field change.