First D-shaped coil delivered
For close to ten years we have watched it slowly come to life. We have witnessed the manufacturing of the niobium-tin strands, the cabling and jacketing of conductor, the machining of radial plates, the insertion into the steel case... And there it was, a strange shape in its transport frame, tightly wrapped in protective material and sitting on a 342-wheel trailer: the first of the 18 D-shaped toroidal field coils required for the ITER machine.
Following a carefully defined trajectory, the convoy progressed slowly and steadily, at times as slow as walking pace. Not only was the load more than 10 metres wide, it was also exceptionally heavy—with the combined weight of the coil, the transport frame and the trailer, the convoy exceeded 600 tonnes.