CERN Accelerating science

Run 3

ATLAS faces the challenge of Run 3

The ATLAS experiment is a general-purpose particle detector operating at the LHC. It consists of several concentric layers of particle detectors occupying a cylindrical volume 46m long and 25m in diameter. The innermost detectors reconstruct the…

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ALICE gears up towards a rich Run 3 QCD programme

Quantum Chromodynamics (QCD), the theory of strong interactions, is characterised by a rich phase diagram. The elementary coloured degrees of freedom of the theory, quarks and gluons, under ordinary conditions are confined in colour-neutral hadrons…

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CMS experiment prepares for Run 3

The CMS experiment is one of the four large experiments at the LHC and a detailed description of the detector's inner and outer layers can be found here. The detector successfully operated with LHC collisions since 2010 leading to the Higgs boson…

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LHCb experiment looks forward

The LHCb detector provides unique precision coverage of the forward region at the LHC, enabling world-leading studies of flavour physics and more. The collaboration is currently installing the first major upgrade of the detector. This upgrade will…

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LHCb adopts GPUs in Run 3 trigger

The LHCb experiment is currently being upgraded to continue its study of beauty and charm hadrons at a five times higher instantaneous luminosity in LHC Run 3 that is now set to start in 2022. At the increased luminosity, these hadrons are produced…

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