UA2 particle detector at CERN

UA2 particle detector at CERN

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Credit: DAVID PARKER/SCIENCE PHOTO LIBRARY

Caption: View from above of the enormous UA2 particle detector at CERN, Geneva. It detects particles created in proton/antiproton collisions on the Super- Proton-Synchroton (SPS) accelerator. The circular central part of the detector is like an orange, with segments consisting of sheets of scintillator & lead and sheets of scintillator & iron sandwiched together. The outside of the "orange" is covered with photo tubes which convert light from the scintillators into electrical impulses. To the left & right of the "orange" are the two outer parts of the detector, consisting of instruments to detect particles flying outwards close to the accelerator beam pipe. The UA2 detector co-discovered (with UA1) the W and Z particles in 1983.

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Keywords: cern, detector, european centre for, nuclear research, particle physics laboratory, ua2 detector

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