Keith Gollwitzer and Dan Kaplan

Wide-lens photo of the Debuncher and Accumulator rings in the Antiproton Source. Photo: Reidar Hahn, Fermilab. The Antiproton Source at Fermilab has been doing yeoman service for more than two decades. Even after the Tevatron has been switched off, scientists think that the Antiproton Source’s equipment could be a valuable asset for future experiments. Built in the early 1980s, the Antiproton Source began operation in 1985. It neatly solved a key problem: how to send two beams of particles through…