LHC
The LHC is being installed in a tunnel 27 km in circumference, buried 50-150 m below ground. Located between the Jura mountain range in France and Lake Geneva in Switzerland, the tunnel was built in the 1980s for the previous big accelerator, the Large Electron-Positron collider (LEP).
It will produce head-on collisions between two beams of particles of the same kind, either protons or lead ions, at the highest energies ever observed in laboratory conditions and physicists are eager to see what they will reveal. Four huge detectors – ALICE, ATLAS, CMS and LHCb – will observe the collisions so that the physicists can explore new territory in matter, energy, space, and time.
More than 10 000 scientists and engineers from around 500 academic institutes and industrial companies worldwide are contributing to the LHC project. Equipment is being built in many European countries, and in others such as Canada, India, Japan, Russia and the US.
This information has been taken from: http://cdsweb.cern.ch/record/921928
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