GoKawiilCERN shuts down full injector complex, beginning three-year Long Shutdown 3
CERN halted its injector complex and Antimatter Factory this morning, stopping the final proton and ion beams that had continued running since the LHC itself went dark in June. This completes the transition into Long Shutdown 3, a multi-year pause across the entire accelerator chain. Engineers used the last weeks of operation to gather performance data and finish physics measurements before maintenance begins.