I was thinking about the new commercial superconducting cables. Generally, superconductivity is permanently destroyed in the presence of a strong external magnetic field. I guess the local plasmoid magnetic field would qualify as strong all right ..but I’m not totally convinced that the global magnetic fields existing in the pinching plasma would penetrate destructively into the superconducting material? .. since the currents setting up the fields are generated in the superconducting material itself ?
