CERN has issued a press release on the progress of LHC repairs. Most importantly, it says:
Director General Rolf Heuer confirmed that the Large Hadron Collider (LHC) remains on schedule for a restart this autumn, albeit about 2-3 weeks later than originally foreseen.
So when will we have collisions? The release goes on to say that further tests are needed:
to determine the start-up date and initial operating energy of the LHC
The center-of-mass energy of collisions will be between 8 and 10 TeV. The higher the energy that the LHC can achieve, the more new physics we will be able to do next year. The center-of-mass energy goal of the LHC is 14 TeV.
Update: For those interested in more information, Symmetry Breaking has posted links to reports and presentations by two external committees that reviewed the systems put into place to prevent future incidents.
