Development of a novel transposed cable with in-plane bending of HTS tapes (X-cable)

TL;DR

This paper introduces a novel HTS X-cable design that uses in-plane bending of stacked tapes for transposition, achieving high current density suitable for large-scale high-field magnet applications.

Contribution

The paper presents a new HTS cable design with in-plane bending of tapes, demonstrating feasibility and performance through prototype fabrication and testing.

Findings

Successful fabrication of a REBCO-based prototype cable

No significant degradation in tape performance after bending

Feasibility of large-scale production of the X-cable

Abstract

A compact HTS cable that is able to carry large current density is crucial for developing high field accelerator magnets. We are reporting a novel HTS cable (named X-cable) that could achieve a high current density as the Roebel cable, but is implemented by in-plane bending stacked HTS tapes directly to realize the transposition. The cable is jointly developed with an industrial company on a production line: ready for large scale production from the beginning. Recently, a prototype cable with REBCO coated conductor has been successfully fabricated. Test results show no significant degradation, demonstrated the feasibility of such cable concept. In this paper, the cable's design concept, in-plane bending performance of the REBCO tapes, fabrication procedure and test results of this first prototype cable will be presented.