The US is responsible for 8% of ITER’s toroidal field (TF) coil conductor. The ITER Organization is responsible for the conductor design which is released for fabrication. Japan, the European Union, the Russian Federation, Korea, and China are also contributing TF conductor.
The 18 toroidal field coils produce a magnetic field around the ITER tokamak torus to confine the plasma particles. The ITER TF coils are designed to have a total magnetic energy of 41 gigajoules and a maximum magnetic field of 11.8 tesla. The US is responsible for enough conductor to wind slightly over one TF coil
US ITER completed all deliveries of toroidal field coil conductor in 2017.
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