2012 年，希格斯玻色子的发现，不仅成为粒子物理学研究史上的重大里程碑，也为下一步粒子物理理论与实验研究的发展指明了新的路标。目前，世界高能物理学界正积极推动未来大型对撞机的发展。为了抓住机遇，对新一代加速器物理和技术的必不可少。因此，深入开展对未来大型环形对撞机加速器的研究，尤其是对我国科学家自主提出的CEPC-SPPC关键加速器物理问题的研究，意义重大。本基金申请主要涉及到CEPC最终聚焦系统，CEPC全环lattice 设计及优化及不稳定性动力学研究，SppC物理设计研究，Muon collider 关键物理问题研究，以及正电子源物理设计研究等几个方面。本项目的开展，不仅可以为我国未来大型环形加速器的建设提供物理、技术上的相关支撑，培养相关人才队伍，还有助于提高我国在高能物理界的国际竞争力，使我国在国际项目的竞争或合作上更具有发言权。

The discovery of Higgs boson in 2012 is not only a milestone in particle physics, but also a road map for the development of future particle physcis. At present, research and development towards future high-energy electron-positron colliders is actively explored around the world. So, the research on the accelerator phyiscs and technology for further colliders becomes necessary, in particular for China’s entry, the Circular Electron-Positron Collider. In the application, the researches will mianly include the final- foucus system of CEPC, lattice design and instable beam dynamics issure for CEPC, critical keys of Muon collider, and positron source for CEPC. This study can not only provide the support in several key points in physics and technology of future collider and a well taining teams , but also can improve the international competitiveness of our country in this field and have more voices in the world.