Insulation of Coated Conductors for High Field Magnet Applications

Insulation in a high field superconducting magnet plays a critical role. For high field magnets using coated conductor, insulation faces a few special challenges. In order to maximize the engineering current density, the conductor insulation has to be very thin (e.g.<12.5\ μ m). In addition to required mechanical and dielectric integrity under high stresses at cryogenic temperatures, the temperature during insulation process needs to be significantly lower than 200∘ Cwhere degradation of coated conductor may occur.