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Abstract: High-Luminosity LHC (HL-LHC) is the new project aiming to upgrade the underground particle accelerator Large Hadron Collider (LHC), at Point 1 (ATLAS in Switzerland) and Point 5 (CMS in France). This paper describes the construction experience for the new underground works at Point 5, located near the existing LHC tunnel. From a geological point of view, the site lies in an area covered by...
Abstract: CERN, the European Organization for Nuclear Research, is an intergovernmental organization that enables international collaboration in the field of high-energy particle physics research. CERN designs, builds and operates particle accelerators and the associated experimental areas, which are housed in a complex network of underground tunnels, galleries and caverns in the Geneva Basin. CERN’s...