Radiation Limits for Nb{sub 3}Sn Superconductors for ITER Magnets: A literature review

Fusion nuclear science facilities and pilot plants based on the spherical tokamak

“…To reduce resistive power consumption it would be advantageous if PF coils 3, 4, and 5 were also superconducting. Neutronics calculations indicate this may be possible using Nb 3 Sn superconductors [183][184][185][186]. First, the peak nuclear heating of the PF3 coil casing for the R 0 = 1.7 m configuration is 2.2 mW cm −3 compared to a typical limit of 2 mW cm −3 (and 1 mW cm −3 for the winding pack).…”