Strategies for conformal REBCO windings

TL;DR

This paper explores strategies for conformal REBCO windings, demonstrating that aligning tapes face-to-face with the magnetic field significantly enhances supercurrent capacity, with simulations showing how to maintain this orientation in complex coil geometries.

Contribution

It introduces and simulates strategies for maintaining optimal tape orientation in conformal REBCO windings, improving supercurrent capacity in high-field magnets.

Findings

Alignment increases supercurrent capacity by ~3x.

Orientation strategies are effective in complex coil geometries.

Simulations confirm feasibility of maintaining optimal tape orientation.

Abstract

A high-field winding can be fabricated from a cable of non-insulated REBCO tapes, stacked face-face without twisting. If the cable is oriented within each turn of a winding so that the tape face is closely parallel to the magnetic field at its location, the supercurrent capacity of that cable is enhanced ~3x greater than in a transverse or twisting orientation. This concept for a conformal winding was presented in a previous paper pertinent to the body winding of a high-field dipole. Strategies are presented and simulated for how the same orientation can be sustained in the flared ends of a dipole.