CERN, Meyrin, Switzerland
The Future Circular Collider (FCC) ’’integrated programme’’ consists of a proposed high-luminosity e+e− collider, FCC-ee, serving as Higgs and electroweak factory, which would, in a second stage, be succeeded by a 100 TeV hadron collider, FCC-hh. FCC-ee and FCC-hh share the same 91 km tunnel and technical infrastructure. In summer 2021 a detailed FCC Feasibility Study (FCC FC), focused on siting, tunnel construction, environmental impact, financing, operational organisation, etc., was launched by the CERN Council. This FCC Feasibility Study (FCC FS) should provide the necessary input to the next European Strategy Update expected in 2026/27. In this paper we briefly review the FCC key design features, status and plans. This paper is an updated, slightly modified version of an article submitted to the proceedings of NA-PAC’22 (published under the Creative Commons Attribution 3.0 license). Sections on two planned accelerator mock-ups and on regional activities were taken from an article in the ECFA Newsletter.
CERN, Meyrin, Switzerland
University of Saskatchewan, Saskatoon, Canada
SLAC, Menlo Park, California, USA
Within the framework of the Future Circular Collider Feasibility and Design Study, the design of the electron-positron collider FCC-ee is being optimised, as a possible future double collider ring, currently foreseen to start operation during the 2040s. FCC-ee is designed to operate at four different energy stages, allowing for precision measurements: from the Z-pole up to above the ttbar-threshold. This synchrotron with almost 100 km circumference is designed including advanced accelerator concepts, such as the crab-waist collision scheme or one combined off-momentum and betatron collimation insertion. Furthermore, numerous optics tuning and measurement studies are being performed to drive the collider design at an early stage and guarantee its feasibility and efficient operation.