The LHC is currently shut down. Teams will now dismantle 1.2 kilometres of the accelerator to install the new HiLumi LHC equipment. This will be connected to the equipment installed in the new HiLumi ...

As of mid-2026, the accelerator complex and experimental facilities at CERN are undergoing major maintenance and upgrade work. This phase, known as “Long Shutdown 3” or “LS3”, is expected to last up ...

This General Safety Instruction (GSI) defines the safety requirements for all types of visits on the CERN site. The new version of the GSI implements lessons learnt ...

The Non-Collider Physics Roadmap aims to maximise scientific impact through a balanced assessment of physics opportunities, resources, feasibility, timelines, and community priorities, providing a ...

Launched in 2021 by Arts at CERN and the Swiss Arts Council Pro Helvetia, Connect has established itself as a key platform for artistic experimentation in connection with fundamental science. The ...

There’s more to CERN than the Large Hadron Collider. A series of accelerators work together to push particles to nearly the speed of light The accelerator complex at CERN is a succession of machines ...

From performing detailed studies of the Higgs boson to demonstrating the first antimatter quantum bit and converting lead nuclei into gold nuclei, this year CERN further expanded our knowledge of the ...

Update: did you enjoy our April Fool’s day story? While we won’t be racing karts through the tunnel, we are gearing up for major works to prepare for HiLumi LHC and its new technologies. The image is ...

Today at 13h51, the engineer in charge of the LHC at the CERN Control Centre announced that stable beams had returned to the Large Hadron Collider (LHC), marking the start of the 2025 physics ...

Following consultations conducted in close coordination with the Swiss and French authorities, extended opening hours and exceptional conditions for Gate E and the ...

The new ALPHA Cesium Fountain Clock is a type of atomic clock currently used for the definition of the SI second (the International System of units). This device, built for ALPHA by the National ...

As CERN prepares for LS3, road safety – one of the nine newly approved CERN Safety Fundamentals – is more critical than ever. Increased traffic, movement of equipment and a higher density of people ...