Advanced Technologies and Materials for Fusion Energy Systems/Superconducting Magnets and Materials

The Department of Energy is developing a series of machines that will further advance the nation¿s fusion energy program. The magnets used in these systems will require advanced insulation solutions, in order to allow for operation at elevated temperatures and in high-radiation environments. The electrical insulation used in future fusion devices must be capable of withstanding the combined loads of extreme operational temperatures (both cryogenic and elevated temperatures), large shear and compressive stresses, high operating voltages, and high levels of incident radiation. This project will demonstrate the use of cyanate ester-based insulation systems for use in the manufacture of magnets with enhanced operational capabilities. Phase I includes the evaluation of insulation stability under simulated application conditions, as well as the fabrication and testing of small coils and cable assemblies. Although the requirements of the Quasi-Poloidal Stellarator (QPS) will be used as the basis for the Phase I effort, the results will be directly applicable to other fusion programs currently under development. Commercial Applications and other Benefits as described by the awardee: The insulation system should improve the performance of magnets used in fusion energy devices, thereby enabling the continued advancement of fusion energy in the U.S. The technology also should be directly applicable to the high field magnets being produced in support of the DOE's High Energy Physics program. Advanced insulation materials and processes also are needed to ensure the reliable operation of electrical components such as motors, transformers, feed-throughs, and magnets, or in any application requiring operation in extreme environments ¿ e.g., the nuclear, aerospace, automotive, and oil and gas industries.