Hosted in two buildings, the ITER neutral beam power supply installation comprises an array of transformers, generators, rectifiers, inverters and other exotic electrical devices designed to feed 1 MeV ultra high voltage to the injectors—something that is ''outside and beyond anything that's ever been done in terms of electrical engineering.''
Faced with a challenge of this magnitude, the ITER Organization and the European Domestic Energy Fusion for Energy, along with Japan and India, began working some ten years ago on a
A powerhouse on stilts—like its real-scale mockup at the MITICA test facility in Padua, Italy, the high-voltage deck and its giant bushing will stand in an otherwise empty hall in order to avoid the generation of electrical arcs.
Nuclear safety also imposes its stringent rules. The equipment itself is not nuclear safety related, but because the largest of the buildings is 25 metres tall and stands relatively close to the Tokamak Building (to which it is connected by bridges and transmission lines), resistance to a potential seismic event, to fire, and to outside explosion determines the building design. "What we need to prevent above all is the collapse of the building and the 'domino effect' on the protection important components (PIC) in the Tokamak Building," says Lamberlin.
Preparatory work has started for the construction of the two buildings that will house neutral beam power supply equipment. Standing close to the Tokamak Building (to which they connect by bridges and transmission lines), the buildings are designed to resist fire, outside explosions and seismic events.