ABSTRACT
CERN is an international organisation that designs, builds, and operates particle accelerators and their associated experimental areas. The accelerator complex at CERN is a succession of machines with increasingly higher energies. The Future Circular Collider (FCC) Feasibility Study explores the technical and scientific feasibility of 80 – 100 km long circular colliders for the post-LHC era, which, if approved, would begin construction in 2033 within the Franco - Geneva basin. The provisional tunnel layout is an approximately 91 km quasi-circle. It has 8 access points, the deepest shaft being approximately 400 m. To determine the feasibility of the project, ground characterisation must be carried out in the areas of highest geological uncertainty, whilst considering the various local and environmental constraints. This paper describes the technical features of the study that set the dimensional and operational constraints of the site investigations, contract strategy and the main objectives and challenges of the campaign.
