The poloidal field coil number 1 (PF1) - nine meters in diameter and weighing 200 tons, one of six poloidal field coils in the magnetic system that will serve to confine plasma in the International Thermonuclear Experimental Reactor (ITER) vacuum vessel, sits on a barge on the eve of its shipment to the ITER construction site in southern France, in Saint Petersburg on October 31, 2022. - Thirty-five nations are collaborating in the ITER energy project aimed at mastering energy production from hydrogen fusion, as in the heart of the sun, a potential new source of carbon-free and non-polluting energy. (Photo by Olga MALTSEVA / AFP)