The Large Hadron Collider near Geneva will be out of action for at least two months, the European Organization for Nuclear Research (Cern) says. Part of the giant physics experiment was turned off for the weekend while engineers probed a magnet failure. But a Cern spokesman said damage to the $6.6bn particle accelerator was worse than anticipated. The LHC is built to smash protons together at huge speeds, recreating conditions moments after the Big Bang.