It got close, but it was limited by its design/diameter, such are the woes of synchroton radiation and accelerating the lighter charged particles. As far as I k

It got close, but it was limited by its design/diameter, such are the woes of synchroton radiation and accelerating the lighter charged particles. As far as I know they pushed its limits all they could (burning it) before shutting it down to replace it with the LHC. Too bad really, as the nicest accelerator for studying the properties of a Higgs is an e+e- collider and at some point at least one will/should be built. The LHC was built because something new had to show up at around 1TeV tops, it was either a Higgs boson or new physics (not all the energy of the pp collision is available for say a qq collision, because quarks are in a bound state, 14 TeV for pp at the LHC means approx 2 TeV for Higgs or new stuff).