Speaker
Description
The Circular Electron Positron Collider accelerator Technical Design Report (TDR), as a Higgs and high luminosity Z factory, has been released in 2023. The baseline design of a detector concept consists of a large 3D tracking system, which is a high precision (about 100$\mu$m) spatial resolution Time Projection Chamber (TPC) detector as the main track embedded in a 3.0T solenoid field, especially for the accelerator operating at Tera-Z. TPC requires the longitudinal time resolution (<100ns) and the physics goals require PID resolution (<3%).
In this talk, we will present the feasibility and progress of the high precision TPC technology for CEPC, even at Tera-Z. The fundamental parameters such as the spatial resolution, PID with the good separation power and the drift velocity were studied by the simulation and measurement using a TPC prototype with 500mm drift length. We will review the track reconstruction performance results and summarize the updated R&D towards TPC construction for CEPC physics and detector TDR.
