Radiation resistant magnet R&D at the NSCL

Proposed high radiation environment projects like the Rare Isotope (RIA) and the Neutrino Factory (NF) require magnetic elements that are radiation resistant. Development of radiation resistant magnets at the National Superconducting Cyclotron Lab (NSCL) has been underway for several years. The focus has been on superconducting devices, as resistive solutions have been know for two decades, but have relatively small current densities. Higher current density options than can be commercially manufactured have been examined. Several solutions for superconducting versions use radiation resistant epoxies, for medium level hardness, and variations on Cable-in-Conduit-Conductor (CICC) for high-radiation areas. These allow engineering current densities of more than 100 A/mm/sup 2/.