The Large Electron-Positron Collider
  1. Council approves the Large Electron-Positron collider

    In the late 1970s physicists from CERN member…

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  2. Civil engineering begins

    The presidents of CERN’s two host countries,…

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  3. LEP tunnel completed

    The excavation of the tunnel for the Large…

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  4. Large Electron-Positron collider: First injection

    With its 27-kilometre circumference, the Large…

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  5. First collisions

    The OPAL experiment recorded the very first…

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  6. LEP inauguration ceremony

    This photo was taken on 13 November 1989 at the…

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  7. LEP's final shutdown

    The Large Electron-Positron collider was shut…

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