 The system, which provided cryogenic liquid helium to the Tevatron's superconducting magnets, was the largest low-temperature system in existence upon its completion in 1978.It kept the coils of the magnets, which bent and focused the particle beam, in a superconducting state, so that they consumed only ⅓ of the power they would have required at normal temperatures.The Tevatron confirmed the existence of several subatomic particles that were predicted by theoretical particle physics, or gave suggestions to their existence.