More collisions at 2.36 TeV

14 December 2009 | By

Beam energy (in GeV) during ramping. (Image: ATLAS Experiment/CERN)

This early morning Dec.14 at 2.40, after a 8 minutes ramp, the energy of the two LHC beams has been brought up to 1.18 TeV again. They started then to collide for about 3 hours with a collision trigger rate of around 1 Hz. Both the magnetic fields of ATLAS were on (they were both off when the first few collisions at this energy were collected on Dec. 8). All the detectors which could be switched safely on in these beam conditions were operational and taking data.