Bevatron
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The Bevatron was a particle accelerator — specifically, a weak-focusing synchrotron — at Lawrence Berkeley National Laboratory which began operating in 1954. The antiproton was discovered there in 1955, resulting in the 1959 Nobel Prize in physics for Emilio Segrè and Owen Chamberlain. It accelerated electrons into a fixed target, and was named for its ability to impart energies of Trillions of eV. It was finally decommissioned in 1994.