The Large Hadron Collider (LHC) [1] is a proton and heavy ion accelerator and collider built at CERN, near Geneva. It is is located in a 27 km long underground tunnel at a depth of about 100 m. The project was approved by the CERN Council in December 1994. It was designed to overcome the performance, in term of center-of-mass energy and luminosity, of all existing and past accelerators such as the Tevatron \(p\bar{p}\) collider at Fermilab and the LEP \(e^+e^-\) collider at CERN.