Scientists at CERN have triggered the complex cooldown of a 95-m-long test stand that reproduces the underground configuration of innovative technologies for the Large Hadron Collider’s high-luminosity upgrade

Beam commissioning is progressing well in CERN’s accelerator complex, with beams already at the gates of the SPS

Linac4 and the PS Booster have already completed their standalone beam commissioning successfully and have handed over the baton to the PS

CERN’s HiRadMat facility is helping scientists to understand how asteroid materials behave under extreme conditions

This technical stop is particularly intense, being both shorter than usual, to maximise the limited time for physics, and very busy, to make essential preparations for LS3, which begins in June

The first large refrigerators for the High-Luminosity LHC have been installed

The 2025 run was successfully completed on 8 December at 6.00 a.m., signalling the start of the year-end technical stop for the LHC and the injector complex

All experiments broke records in the final full operating year of the third run of the LHC

The extraordinary performance reflects decades of accumulated expertise, a culture of continuous development and improvement, and a sustained collective effort across all technical and operational domains