December 2020, ScientificAmerican.com 79MAGNET CONSTRUCTION: Made of niobium-tin and niobium-
titanium, the poloidal magnets are the only ITER components
manufactured on-site. With diameters between 17 and 24 meters
and weighing up to 400 metric tons each, they are too large to be
built elsewhere and transported. Poloidal Field Coil #6 is shown
here inside its cooling cryostat.
FROM OUR ARCHIVES
Fusion’s Missing Pieces. Geoff Brumfiel; June 2012.
scientificamerican.com/magazine/sa