Navigation path


CERN High Luminosity Large Hadron Collider (HL-LHC) project


underground infrastructures and surface buildings

CERN - European Organization for Nuclear Research

Rocksoil S.p.A., Milan, Italy
Setec, Paris, France
CSDingenieurs, Genève, Switzerland
Lombardi SA, Minusio, Switzerland
Pini Swiss Engineers, Lugano, Switzerland
Artelia, Paris, France
CERN, Meyrin, Switzerland

The Large Hadron Collider (LHC) is the most recent and powerful particle accelerator constructed on the CERN site. The LHC consists of a 27 km circular tunnel, about 100 m underground, with eight sites positioned around the tunnel’s circumference. High-Luminosity LHC (HL-LHC) is a project aiming to upgrade the LHC to maintain scientific progress and exploit its full capacity.
As mentioned, the construction sites are located near to the ATLAS site (Point 1) and CMS site (Point 5). Both sites are equipped with the typical installations for underground works, such as ventilation, water treatment plant, excavation equipment, site accommodations, workshop, lift installation, etc.