Welcome
First beam circulated in the Large Hadron Collider on 20 November 2009, and first collisions at 900 GeV (450 GeV per beam) followed on 23 November. The LHC set a world record for beam energy on 29 November, accelerating beams to energies of 1.18 TeV. These are important milestones on the road towards first physics at the LHC, which will begin with collisions at 7 TeV (3.5 TeV per beam). The first high energy collisions will most likely occur in the first quarter of 2010.