European Laboratory for Particle Physics

At CERN, scientists from around the world use unique machines to explore how the Universe works, pushing the limits of technology for the benefit of society.

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Making room for HiLumi LHC

The first two massive components of the LHC have been removed from the accelerator tunnel

The disconnection of the LHC has begun

A key step on the road to the HiLumi LHC: work to disconnect the focusing magnets on either side of the ATLAS and CMS experiments has started

NA64, a decade of hunting dark matter

Since 2016, this CERN experiment has searched for missing energy that may hint at dark matter

Making room for HiLumi LHC

The first two massive components of the LHC have been removed from the accelerator tunnel

The disconnection of the LHC has begun

A key step on the road to the HiLumi LHC: work to disconnect the focusing magnets on either side of the ATLAS and CMS experiments has started

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What’s going on at CERN?

As of mid-2026, CERN’s accelerator complex and experiment facilities are undergoing major maintenance and upgrade work. This phase, known as Long Shutdown 3, involves thousands of experts from many different disciplines.

The work centres on transforming the LHC into a high-luminosity machine, the HiLumi LHC. Most of the other accelerators and experimental facilities are being upgraded as well.

HiLumi LHC

The High-Luminosity Large Hadron Collider will increase by a factor of ten the number of particle collisions (called “luminosity”), vastly increasing the volume of physics data available for researchers.

This leap forward will allow physicists to explore the behaviour of the Higgs boson and other elementary particles with unprecedented precision, increasing the potential for discoveries after 2030.

Future Circular Collider

The Future Circular Collider could be Europe’s next-generation particle collider: a unique tool to explore the deepest mysteries of the Universe and to drive technology, innovation and skills for decades to come. 

This new collider would help answer many questions about nature’s rulebook that lie beyond the reach of current colliders.