The Large Electron-Positron Collider
LEP – the largest electron-positron accelerator ever built – was dismantled in 2000. Its 27-kilometre tunnel now hosts the LHC
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22 May 1981
Council approves the Large Electron-Positron collider
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13 September 1983
Civil engineering begins
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8 February 1988
LEP tunnel completed
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14 July 1989
Large Electron-Positron collider: First injection
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13 August 1989
First collisions
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13 November 1989
LEP inauguration ceremony
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2 November 2000
LEP's final shutdown