精品文档---下载后可任意编辑CSR 外靶硅微条阵列探测器电子学系统讨论中期报告AbstractIn this report, the mid-term progress of the electronic system research for CSR outer target silicon micro-strip array detector is presented. The main focus is on the TDC-based readout electronics system. A prototype system has been designed and tested, and preliminary results show that it can achieve a time resolution of less than 20 ps.IntroductionThe China Spallation Neutron Source (CSNS) is a new generation of neutron source facility that will provide intense neutron beams for materials research and other applications. In order to perform efficient and accurate experiments, precise neutron detection systems are needed. Among them, the outer target silicon micro-strip array detector is an important component of the neutron detection system, which is used to measure the position, energy and time of neutrons. To achieve higher energy resolution and better time resolution, a TDC-based readout electronics system is needed.MethodIn our TDC-based readout electronics system, the detector signals are first pre-amplified, shaped and then fed into a leading-edge discriminator (LED) circuit. The outputs of the LED are then fed into the TDC to measure the time difference between the leading edges of the two signals. The TDC we used is based on a time-to-digital converter (TDC) chip with a resolution of 20 ps. The TDC chip is controlled by a field-programmable gate array (FPGA), which provides both control signals and data acquisition.ResultsA prototype readout electronics system has been developed and tested with a test bench of two firmware-programmable timing modules. The time resolution of the system has been measured to be less than 20 ps, which meets the requirement for the CSR outer target silicon micro-strip array detector.精品文档---下载后可任意编辑ConclusionIn conclusion, we have designed and tested a TDC-based readout electronics system for the CSR outer target silicon micro-strip array detector. The prototype system has achieved a time resolution of less than 20 ps, which is suitable for the detector application. Further optimizations of the system will be carried out to improve its performance and reliability in the future work.
