English: 1960s vintage 2 MeV Van de Graaff linear accelerator. A single ended belt charging linear accelerator made by "High Voltage" used primarily to accelerate hydrogen and helium ions from a RF positive ion source. The machine was capable of terminal voltages above 2 million volts. This machine operated at the Australian National University from the early 1960s till 2000. It consists of an endless fabric belt, inside the tube, that carries charge to the inside of a large spherical capacitive electrode (not shown)