Future Circular Lepton Collider FCC-ee: Overview and Status

TL;DR

The paper provides an overview of the FCC-ee, a proposed high-luminosity electron-positron collider aimed at Higgs, top, and electroweak studies, as part of the future circular collider project.

Contribution

It summarizes the design, performance, and technological advancements of the FCC-ee, updating previous conceptual designs for future collider planning.

Findings

FCC-ee aims to be a Higgs, top, and electroweak factory.

Recent design improvements enhance performance and feasibility.

The project is part of a staged plan leading to a 100 TeV hadron collider.

Abstract

The worldwide High Energy Physics community widely agrees that the next collider should be a Higgs factory. Acknowledging this priority, in 2021 CERN has launched the international Future Circular Collider (FCC) Feasibility Study (FS). The FCC Integrated Project foresees, in a first stage, a high-luminosity high-energy electron-positron collider, serving as Higgs, top and electroweak factory, and, in a second stage, an energy frontier hadron collider, with a centre-of-mass energy of at least 100 TeV. In this paper, we address a few key elements of the FCC-ee accelerator design, its performance reach, and underlying technologies, as requested by the Snowmass process. The Conceptual Design Report for the FCC, published in 2019, serves as our primary reference. We also summarize a few recent changes and improvements.