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Abstract:
The Circular Electron-Positron Collider (CEPC), designed to reach a center-of-mass energy of up to 360 GeV, is China’s most ambitious high-energy physics project. Its primary goals are precision studies of the Higgs boson and searches for physics beyond the Standard Model, which the CEPC detector are designed to probe. As one of its most important sub-detectors, the CEPC silicon tracker will cover a total active area of about 100 m², integrating advanced pixel and microstrip sensors with micron-level precision to achieve per-mille-level momentum resolution, measuring charged-particle trajectories from below 1 GeV/c to above 100 GeV/c. The detector will also serve as a high-precision Time-of-Flight system, with a target single-layer timing resolution of 50 ps. Applying self-developed high-performance sensors, electronics, mechanics, and CO2 cooling, it represents the most sophisticated tracking detector system ever built in China. This presentation will provide a comprehensive overview of the detector design, as well as the current status and future plans for system development.
Biography:
Qi Yan is a professor at the Institute of High Energy Physics, Chinese Academy of Sciences. He received his Ph.D. in Particle and Nuclear Physics from the University of Chinese Academy of Sciences in 2014. From 2014 to 2024, he worked at the Massachusetts Institute of Technology (MIT), holding positions as Research Associate, Postdoctoral Associate, Research Scientist, and Principal Research Scientist. As a core member of the Alpha Magnetic Spectrometer (AMS) experiment, he led developments of the key detector technologies, successfully overcoming critical technical challenges to realize a large, high-precision particle spectrometer in the complex space environment, resulting in outstanding detector performance. He also made significant contributions to AMS data analysis: among the 26 physics papers published by the AMS collaboration, 10 directly adopted his analysis results. In April 2024, he was recruited through the highest-level talent program of the Chinese Academy of Sciences (XXXX Category A Leading Talent). He currently leads the CEPC Silicon Tracker group, advancing the development of key detector technologies and contributing to the establishment of a world-class experimental platform.
Host: Prof. Liang Li
Alternative online link：https://meeting.tencent.com/dm/Jfb4KhuKx0QB
ID: 704289960 password: 123456