A Radiation Resistant Dipole Using Metal-Oxide Insulated CICC

Several proposed accelerator facilities will be capable of providing intense beams on targets that are in close proximity to superconducting magnets. These magnets will have to operate in high-radiation environments. A proposed solution to the manufacture of radiation tolerant coils is to use a metal-oxide insulated version of the standard CICC, which allows the use of welding to provide structural integrity. A small superferric dipole, similar to one previously constructed with conventional epoxy-potted coils, has been fabricated with metal-oxide CICC. The coils have four turns of 10 mm square conductor having 42 strands of 0.5 mm diameter NbTi wire. The calculated field on the conductor is about 2 T at a current of 10 kA. Test results will be reported and extension to larger devices discussed.