First LHC collisions at 7 TeV
Caption
Martin Aleksa, Lyndon Evans, Fabiola Gianotti and Peter Jenni toast running at 7 TeV in the ATLAS Control Room. (IMAGE: CERN)
ATLAS records collisions at 7 TeV centre-of-mass energy for the first time.
Particle physicists around the world anticipate a rich harvest of new physics as the LHC begins its first long run at an energy three and a half times higher than previously achieved at a particle accelerator.
Explore the resources prepared for press.