A Design Study for a Muon Collider complex at 10 TeV center of mass

有两个设施概念被认为是通向欧洲能源前沿粒子物理学未来的潜在途径：FCC HH，100TeV圆形强子对撞机和CLIC，3TeV线性轻子(即电子-正电子)对撞机。最近的欧洲加速器研发路线图包括一个新的选项-10 TeV或更多TeV的Muon对撞机，它扩大了轻子对撞机的能量覆盖范围，并承诺紧凑的尺寸、高效率和有限的成本。与强子不同，Muon是点状粒子；在许多物理过程中，10TeV的Muon对撞机的物理情况与100TeV的强子对撞机相似。Muon对撞机有望带来很高的收益，但也面临着巨大的风险，因为它是此类设备中的第一台，并使用了新的先进技术。MuCol设计研究将解决路线图中确定的核心挑战，开发概念和技术，并展示：·Muon对撞机的物理情况是健全的，探测器系统可以产生足够的分辨率和拒绝背景；·任何主要的技术问题都不会阻止加速器或探测器实现令人满意的性能；·与其他同等对撞机相比，MuCol对撞机提供了高度可持续的能源前沿设施；以及·利用与其他科学和工业研发项目的协同作用，可使欧洲在发现潜力和开发相关技术方面处于领先地位。最后报告将包括对加速器和探测器综合体的益处和风险进行彻底评估，包括对高能物理以外的科学、工业和社会回报、综合体的成本规模和可持续性以及在欧洲核子研究中心场址实施产生的影响进行评估。这将使下一次欧洲粒子物理战略更新(ESPPU)进程能够在知情的情况下选择在欧洲建造的下一台大型对撞机。

Two facility concepts have been considered as potential pathways to the future of particle physics at the energy frontier in Europe: FCC hh, a 100 TeV circular hadron collider and CLIC, a 3 TeV linear lepton (i.e. electron-positron) collider. The recent European Accelerator R&D Roadmap includes a novel option, a 10 or more TeV muon collider, which expands the lepton collider energy reach and promises compact dimensions, high efficiency and limited cost. Muons are point-like particles, in contrast to hadrons; a 10 TeV muon collider would have a comparable physics case, for a number of physics processes, to a 100 TeV hadron collider. The muon collider promises high benefit but also faces a significant risk, as it is the first of its kind and uses novel advanced technologies. The MuCol design study will address the core challenges identified in the Roadmap, develop the concept and technologies and demonstrate: • the physics case of the muon collider is sound and detector systems can yield sufficient resolution and rejection of backgrounds; • no principle technological issues will prevent the achievement of a satisfactory performance of the accelerator or the detectors; • the muon collider provides a highly sustainable energy frontier facility compared to other equivalent colliders; and • exploiting synergies with other scientific and industrial R&D projects, can provide Europe a leading edge in discovery potential and development of associated technologies. The final report will include a thorough assessment of benefits and risks of the accelerator and detector complex, including an evaluation of the scientific, industrial and societal return beyond high-energy physics, the cost scale and sustainability of the complex and the impact arising from an implementation on the CERN site. This will allow the next European Strategy for Particle Physics Update (ESPPU) process to make informed choices for the selection of the next large collider to be built in Europe.