Improved cable insulation for superconducting magnets

The Kapton CI cable insulation system described in this paper has been shown through extensive testing to be robust and reliable. It does require higher molding temperatures but these can readily be accommodated through proper design of the coil tooling. Its characteristics are equal to or superior in all known respects to those of the Kapton/Fiberglass system that has been used to date. In particular, its improved punch-through resistance gives a significant reduction in the probability of electrical faults in the current generation of high field, high prestress accelerator magnets, a characteristic that will be critical for successful operation of large machines built of such magnets