Superconducting coils and methods of manufacture include a superconductor tape wound concentrically about and disposed along an axis of the coil to define an opening having a dimension which gradually decreases, in the direction along the axis, from a first end to a second end of the coil. Each turn of the superconductor tape has a broad surface maintained substantially parallel to the axis of the coil.
STATEMENT AS TO FEDERALLY SPONSORED RESEARCH
This invention was made with Government support under Prime Contract No. DE-FC36-93CH10580 awarded to Reliance Electric Co. by the Department of Energy. The Government has certain rights under this invention.