User:P.Janot/FCC

CERN is undertaking an integral design study for post-LHC particle accelerator options in a global context. The Future Circular Collider (FCC) (FCC) study has an emphasis on proton-proton and electron-positron high-energy frontier machines. It is exploring the potential of hadron and lepton circular colliders, performing an in-depth analysis of infrastructure and operation concepts and considering the technology research and development programs that would be required to build a future circular collider. A conceptual design report will be delivered before the end of 2018​, in time for the next update of the European Strategy for Particle Physics at CERN Council.

Scope
The main emphasis of the conceptual design study is a hadron collider, named FCC-hh, with a centre-of-mass energy of the order of 100 TeV in a new 80-100 km circumference tunnel for the study of physics at the highest energies. This, along with its detectors, will determine the basic requirements for the tunnel, surface and technical infrastructures. The corresponding hadron injector chain is included in the study, taking into account the existing CERN accelerator infrastructure and long-term accelerator operation plans. The performance and cost of the hadron collider will be compared to a high-energy LHC based on the same high-field magnet technology and housed in the existing LHC tunnel. Such a machine would in principle have the ability to reach 26 to 33 TeV.

The conceptual design study will also include a lepton collider, named FCC-ee, with a centre-of-mass energy of the order of 90 to 350 GeV and its detectors, as a potential intermediate step towards realization of the hadron facility. The design of the lepton collider complex will be based on the hadron collider infrastructure and any substantial incompatibilities with respect to the hadron collider infrastructure requirements will be analysed and quantified. Potential synergies with linear collider detector designs will also be considered.

Options for electron-proton scenarios, named FCC-he, and their impact on the infrastructure, will be examined at conceptual level.