The future facility is composed of a linear accelerator in which protons are accelerated and collide with a rotating, helium-cooled tungsten target. By this process, intense pulses of neutrons are generated. Surrounding the tungsten are baths of cryogenic hydrogen which feed supermirror guides. These operate in a similar way to optical fibres, directing the intense beams of neutrons to experimental stations, where research is done on different materials. Many of the instruments benefit from more than a decade of development, and several of the designs are unique in order to maximise the benefits of the long pulse.