Large Hadron Collider

On Friday, the Large Hadron Collider (LHC) opened its doors to allow particles to travel around the ring for the first time since the year-end technical stop (YETS) began in December 2015. At 10.30 am, a first bunch was circulating and by midday the beam was circulating in both directions.

Over 230 scientists and engineers from around the world met at CERN to discuss the High-Luminosity LHC – a major upgrade to the Large Hadron Collider (LHC) that will increase the accelerator’s discovery potential from 2025.

Exotic pentaquark particle spotted in CERN’s accelerator complex