CERN / SCIENCE PHOTO LIBRARY CERN / SCIENCE PHOTO LIBRARY
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The Proton Synchrotron (PS) particle accelerator at CERN, the European particle physics laboratory outside Geneva, seen shortly after its completion in 1959. At the time, it accelerated protons to a record energy of 24 GeV. Today it can achieve energies of 28 GeV & forms a vital part of the accelerator complex at CERN that ultimately collides protons & antiprotons in the Super- Proton-Synchrotron (SPS) at energies of hundreds of GeV.
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