Trigger signal pre-processing in nuclear physics experiment data acquisition systems
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摘要: 简要介绍了在核物理实验数据获取系统中，用FPGA芯片和VHDL语言实现对事件触发信号的预处理。阐述了在核物理实验数据获取系统中对事件触发信号的一般要求; 结合60Co伽马谱测量实验，介绍了基于一套自主研发的数据获取系统中触发信号的预处理，并给出了用VHDL语言实现该触发信号预处理的思想、仿真时序图和实验结果。该方法通过实验验证，证明切实可行，灵活性强。Abstract: The realization of events trigger signal pre-processing in the nuclear physics experiment data acquisition system is briefly introduced, by using the FPGA （field-programmable gate array） chips and VHDL language. The general requirements of trigger signal processing in nuclear physics experiment are listed. The 60Co gamma spectra test experiment is introduced to detail these requirements. The trigger signal pre-processing in self-programming systems is presented. According to a given timing diagram, the trigger signal processing is realized with the VHDL language and FPGA technique. Through the actual waveform simulation and the experiments, this method is proved to be feasible and flexibility. This method can be of reference value for other data acquisition system trigger signal processing.
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Key words:
- data acquisition /
- trigger signal /
- processing /
- field-programmable gate array
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