TUYAS0102
IHEP, People’s Republic of China
A few years, the Circular Electron Positron Collider (CEPC) was proposed as a Higgs and high luminosity Z factory in China. The baseline design of a detector concept consists of a tracking system, which is a high precision (about 100 micrometers) spatial resolution Time Projection Chamber (TPC) as the main tracking device in very large 3D volume. TPC detection technology requires longitudinal time resolution of about 100 ns and the physics goals require PID resolution of very good separation power with cluster counting to be considered. A number of critical issues are still remaining regarding the TPC research. The simulation and PID resolution show TPC technology potential to extend Z at the high luminosity. In this talk, we will present the feasibility and status of high precision TPC as the main track detector for CEPC. A smaller prototype TPC has been developed with a drift length of 500 mm, gaseous chamber, 20000V field-cage, the low power consumption FEE electronics and DAQ have been commissioned and some studies have been finished. Some updated experimental results including the spatial resolution, the gas gain, the laser track reconstruction and dE/dx will be reported.
