【摘要】 基于DRS4芯片的高性能数字化波形采样器件，凭借其高采样率、高集成度、低功耗的特点，成为大规模、多通道时间测量系统的优先选择，在多路正电子湮没寿命探测中展现出潜在的应用前景。本研究针对基于DRS4评估板(DRS4 evaluation board)的双探测器通道的正电子湮没寿命测量系统数据处理效率低下的问题，采用符合判选的方法，通过精确甄别采样电路中的有效事例，确保电路中核心资源高效利用，以实现基于DRS4评估板的高效率正电子湮没测量。结果表明，在采用符合判选方法时，基于DRS4评估板构建的正电子湮没寿命测量系统，符合计数率已达到该评估板的处理极限。更多还原

【Abstract】 The high performance digital waveform sampling device based on the switched capacitor matrix DRS4 chip, with its high sampling rate, high integration and low power consumption, has become the preferred choice for large-scale, multi-channel time measurement systems, and has shown potential application prospects in multi-channel positron annihilation lifetime detection. This study investigated the reasons for the low data processing efficiency in a positron annihilation lifetime measurement system with dual-detector channels based on the DRS4 evaluation board, implemented improvements by adopting a coincidence selection method to precisely identify valid events within the sampling circuit, thereby ensuring highly efficient utilization of core circuit resources and achieving high-efficiency positron annihilation measurement based on the DRS4 evaluation board.In response to the system’s low data processing efficiency, an effective event pre-coincidence selection method was adopted in the experiment. By precisely filtering the valid events in the DRS4 acquisition circuit, the method ensures the efficient utilization of the core signal processing resources within the circuit. Measurement results show that the DRS4 positron annihilation lifetime measurement system based on the new triggering method can reach the processing limit of the DRS4 evaluation board.更多还原