All CERN accelerators now on the road to HiLumi
CERN's accelerator complex and Antimatter Factory have concluded their third run, initiating Long Shutdown 3 (LS3) for extensive maintenance and upgrades in preparation for the High-Luminosity LHC (HiLumi LHC) era. Operations are expected to resume progressively from 2028, with the HiLumi LHC scheduled for restart in mid-2030.
Why it matters
This major upgrade at CERN is crucial for advancing particle physics research, enabling scientists to gather more precise data and explore new phenomena, pushing the boundaries of human understanding of the universe.
The accelerator complex and Antimatter Factory delivered their last beams, marking the end of the third run and the start of major upgrade work to prepare for the HiLumi era
CERN’s injector complex and Antimatter Factory took their final steps towards Long Shutdown 3 (LS3) this morning, as the last particle beams were extracted and the machines fell silent. This milestone follows the shutdown of the Large Hadron Collider (LHC) in June, which marked the beginning of LS3 for the Laboratory’s flagship accelerator. While the LHC has already entered its transformation phase, the machines that feed it – the injectors – have continued delivering proton and ion beams throughout the summer.
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