LHC becomes most powerful accelerator of all time - physics-math - 30 November 2009 - New Scientist
Maybe just as we know it!Within hours of becoming the most powerful accelerator on the planet, the LHC accelerated both its beams, one rotating clockwise and the other counter-clockwise, to still higher energies of 1.18 TeV each. Particles in those beams will have collided, although the detectors weren't turned on to detect them.