“High-energy electron-positron collider ring is a big international scientific project sponsored by the China， appart from promoting the development of local society and economy， it will also become the research center of international science and technology as well as the base of talent introducing and training.”

--- WANG Yifang，

deputy direcyor of National Laboratory of Electron-positron Collider， Beijing

In 2012， CERN announced that it has captured Higgs particles on ite Large Hadron Collider （LHC）. Higgs discovery is regarded as the final piece of the puzzle to make up the Standard Model of physics. Conducting a detailed study Higgs particle is a step of particle physics research that can not be bypassed. In view of this， Chinese scientists proposed the future high-energy accelerator program- high energy electron-positron collider and super-proton collider （CEPC-SPPC）， whose pre-research work has already been underway.

Initial idea of the program： building circular electron-positron collider with a perimeter of 50 to 100 km， serving as the Higgs boson （Z bosons） factory for accurate measurement of the Higgs nature， and depth study of the Standard Model， spontaneous electroweak symmetry breaking mechanism as well as basic questions such as the origin of mass， etc.， thus looking for new physical evidences beyond the standard model； project two can build proton collider in the same tunnel， researching new physics via the hitting of high energy particles. According to the preliminary schedule， 2016-2020 will be the pre-feasibility study and engineering design time of CEPC， and 2022 ～ 2028 will be the construction time of the project. According to WANG Yifang： "Feasibility of the program has been internationally recognized and there is no fundamental difficulties."