发表机构
CERN; Deutsches Elektronen-Synchrotron DESY; Humboldt-Universität zu Berlin（欧洲核子研究中心; 德国电子同步加速器; 柏林洪堡大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文针对FCC的碳足迹、成本与科学目标等指控，以数量级和完整核算回应，强调气候要求基于真实后果决策，并将辩论框定为关于社会愿景的选择。
AI 中文摘要
2026年夏天，法国物理学会粒子与场分部内部讨论中，一个问题浮现：一台对撞机是否会成为为拯救气候而必须放弃的一切的象征？不可接受的碳足迹、两座EPR核反应堆、五百人死亡、数十亿资金需重新分配，以及最关键的——不明确的科学目标：对CERN未来环形对撞机（FCC）的反对意见似乎构成了一份压倒性的控诉。本文逐一审视每项指控。基于清晰而令人信服的科学愿景，本文以数量级对抗情绪化意象，区分项目的足迹与其完整资产负债表，考虑推迟或放弃项目的成本，并探索减少其影响的方法——包括仍不确定的天然氢前景。气候本身并不决定FCC的未来；它要求我们根据真实后果来判断现有选择。本文为法国国家公众辩论委员会组织的公众辩论以及瑞士磋商而撰写，旨在面向尽可能广泛的读者，远超粒子物理学界和科学共同体。它将FCC辩论框定为关于我们想要建设何种社会的选择：我们是围绕放弃和不断缩小的视野来组织社会，还是转变生产方式并选择值得期待的未来？
英文摘要
Could a collider become the symbol of everything that must be abandoned to save the climate? In the summer of 2026, this question ran through discussions within the Particles and Fields Division of the French Physical Society. An unacceptable carbon footprint, two EPR nuclear reactors, five hundred deaths, billions to be reallocated and, to top it all, unclear scientific objectives: the objections to CERN's Future Circular Collider (FCC) appeared to form an overwhelming indictment. This essay examines each charge in turn. Grounded in a clear and compelling scientific vision, it confronts emotionally charged imagery with orders of magnitude, distinguishes a project's footprint from its full balance sheet, considers the costs of postponing or abandoning it, and explores ways of reducing its impacts-including the still uncertain prospect of natural hydrogen. The climate alone does not decide the future of the FCC; it requires us to judge the available choices by their real consequences. Developed for the public debate organised by France's National Commission for Public Debate (CNDP) and for the Swiss consultation, this essay is intended for the broadest possible readership, well beyond particle physics and the scientific community. It frames the FCC debate as a choice about the kind of society we want to build: should we organise society around renunciation and ever-shrinking horizons, or transform how we produce and choose a future worth wanting?
CommentsThe present text expands and unifies eight earlier essays arising from discussions on climate change and the FCC held in summer 2026 within the Particles and Fields Division of the French Physical Society (SFP). Version 2 includes the arXiv reference to the companion paper 'Hydrogen mon amour' (arXiv:2609.32307) and a few formulation improvements
