All planned in advance. See, e.g., http://blogs.discovermagazine.com/cosmicvariance/2010/01/29/decision-for-the-lhc-1-inverse-fb-at-7-tev-or-bust/ http://blogs.

All planned in advance. See, e.g., http://blogs.discovermagazine.com/cosmicvariance/2010/01/29/decision-for-the-lhc-1-inverse-fb-at-7-tev-or-bust/ http://blogs.discovermagazine.com/cosmicvariance/2010/01/29/... Relevant quotation: "After a one to one-and-a-half year shutdown in 2012 to retrofit the rest of the machine and make other preparations, the LHC will attempt to double the energy, to 14 TeV in the center of mass, in 2013 and accumulate substantial physics data."