The Large Electron–Positron Collider (LEP), which operated from 1989 to 2000 and was the largest machine of its kind, housed in a 27 km-long circular tunnel which now houses the Large Hadron Collider.
Den store elektron-positronaccelerator, LEP (Large Electron-Positron Collider), som var i drift i årene 1989-2000, dengang den største af sin art. Den blev bygget i den 27 km lange tunnel, som nu huser Large Hadron Collider.