Speaker
Description
The Super Tau-Charm Facility (STCF) is a new electron-positron collider proposed in China to serve as a crucial platform for Tau-Charm physics research. The main drift chamber (MDC) is the primary component of the STCF tracking system, which responsible for reconstructing the momentum of particles by measurement of trajectories of particles and measuring the energy loss information in each drift cell for particle identification. Because the peak luminosity of the STCF is much higher than other similar experiment, the high-rate requires a significant challenge for the MDC in STCF in high luminosity conditions. In addressing this key issue, research work from two aspects including detector and electronics are proposed in this paper. A full-length prototype detector with super-small drift cells in about 5 mm are developed to reduce the counting rate of each cell, as well as the feedthrough. The multi-channel readout electronics based on a waveform distinction algorithm in high-rate implemented in field-programmable gate array (FPGA) are designed to measure the charge and time information of the detector signals and provide the trigger information. Preliminary tests indicate that the system can achieve above 200 kHz high-rate and meets the requirement of STCF.
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