The $13-million Large Coil Test Facility (shown in a scale model)

to be built at Oak Ridge will be used to test six 40-ton superconducting magnets, each about 15 feet X 12 feet, roughly half the size of magnets expected to be appropriate for early fusion reactors. The photo shows the 40-foot-high vacuum tank, in which the magnets will be mounted for testing, with its cover removed. In the foreground, a magnet coil is being moved with a lifting device. The facility is to operate in 1981. The design is flexible enough to allow testing later of full-size coils.