LEP Pre-Injector

LPI comprised the LEP Injector Linac (LIL) and the Electron Positron Accumulator (EPA).

The construction was planned and implemented in close collaboration with Laboratoire de l'accélérateur linéaire (LAL) in Orsay, France.

The first collisions were performed on August 13 and the first physics run, allowing LEP's experiments to take data, took place on September 20.

However, during the first months of operation, it became clear that an output energy of 500 MeV allowed for a more reliable running of the machine.

After passing EPA, the particles were delivered to the PS and SPS for further acceleration, before they reached their final destination, LEP.

The electrons coming there were used for many different applications throughout LIL's operation, testing and preparing LEP's and later LHC's detectors.

Until the beginning of 2001, the effects of synchrotron radiation on LHC's vacuum chambers were studied at SLF 92 with the COLDEX experiment.

[5] LPI's final success was the PARRNe experiment: The electrons provided by LPI-generated gamma rays, which were used to create neutron-rich radioactive krypton and xenon atoms.