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. After a technical stop, beams were back in the LHC on 28 February.
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.