Experimental fusion facilities are validating Rare-Earth Barium Copper Oxide (REBCO) high-temperature superconducting magnets to achieve higher magnetic field strengths in smaller tokamak footprints. This shift alters the economics of magnetic confinement fusion.
Thermal Management under High Flux
Sustaining 20-Tesla magnetic fields requires advanced cryogenic cooling loops operating at 20 Kelvin. Recent plasma duration runs confirmed zero degradation in superconductor critical current density over 100 consecutive discharges.