The Future Circular Collider: Vision, Progress, and Prospects with FCC-ee

by Frank Zimmermann (CERN), Michael Benedikt (CERN)

Monday Apr 14, 2025, 1:00 PM → 2:30 PM America/Chicago

Abstract: The Future Circular Collider (FCC) represents a bold vision for the future of high-energy particle physics, aiming to extend the energy and intensity frontiers beyond the capabilities of the LHC. In this talk, we present an overview of the FCC integrated program, with a particular focus on the electron-positron collider (FCC-ee) as the first step. FCC-ee offers a powerful precision tool to study the Z, W, Higgs, and top-quark sectors with unprecedented accuracy, serving as both a physics flagship and a technological stepping stone toward the ultimate goal of a 100 TeV hadron collider (FCC-hh).

We will discuss the key technical features of FCC-ee, including its double-ring collider design, ultra-low emittance optics, high luminosity across multiple center-of-mass energies (90–365 GeV), and advanced beam dynamics challenges such as beamstrahlung mitigation, top-up injection schemes, and crab-waist collision optics. In parallel, we will provide an update on the comprehensive feasibility study underway, coordinated by CERN with international partners, which encompasses site-specific geotechnical investigations, civil engineering planning, machine-detector interface optimization, cost and schedule modeling, as well as environmental impact assessments.

Together, these efforts are converging toward a mid-decade decision point for the FCC program. The FCC-ee presents a compelling near-term opportunity to unlock deep insights into fundamental interactions, while anchoring a long-term strategy for particle physics.

slides