In this paper a fast digital real-time spectrometer was developed for timing and analysis of nuclear pulse signals.The hardware system design and algorithm implementation with field-programming gate array(FPGA) and di...In this paper a fast digital real-time spectrometer was developed for timing and analysis of nuclear pulse signals.The hardware system design and algorithm implementation with field-programming gate array(FPGA) and digital signal processor(DSP) were introduced.The performance of the digital constant fraction discrimination(dCFD) platform was experimentally tested with Agilent 80 MHz function/arbitrary waveform generator and LaCl 3:Ce 3+ scintillator detector for 22 Na positron annihilation gamma spectroscopy.The amplitude and time information of photon was online obtained.The energy resolution could be 5.525% and the timing resolution 293.75 ps,the system error estimation of dCFD approach was also studied.The results showed that this spectrometer achieved a timing resolution close to that of traditional CFD timing resolution with a more simplified system structure.展开更多
基金supported by the National Natural Science Foundation of China (Grant No. 10975132)
文摘In this paper a fast digital real-time spectrometer was developed for timing and analysis of nuclear pulse signals.The hardware system design and algorithm implementation with field-programming gate array(FPGA) and digital signal processor(DSP) were introduced.The performance of the digital constant fraction discrimination(dCFD) platform was experimentally tested with Agilent 80 MHz function/arbitrary waveform generator and LaCl 3:Ce 3+ scintillator detector for 22 Na positron annihilation gamma spectroscopy.The amplitude and time information of photon was online obtained.The energy resolution could be 5.525% and the timing resolution 293.75 ps,the system error estimation of dCFD approach was also studied.The results showed that this spectrometer achieved a timing resolution close to that of traditional CFD timing resolution with a more simplified system structure.
