Assembly for magnetization of rare-earth permanent magnets

A superconducting magnetizer assembly, comprising:

• a coil pack, comprising an inner coil comprising a first superconducting magnet material, the inner coil being configured to generate a first magnetic field in response to an electric current supplied to the inner coil, an outer coil comprising a second superconducting magnet material, the outer coil being disposed about the inner coil and being configured to generate a second magnetic field in response to an electric current supplied to the outer coil, a non-conductive end spacer disposed between an end winding of the inner coil and an end winding of the outer coil, and a container configured to house the inner and outer coils;
• and
• a yoke disposed proximate the coil pack being configured to constrain the first and second magnetic fields to reduce the strength of the first field at the end winding of the inner coil, wherein the yoke comprises an annular ring configured to at least partially envelop the coil pack.