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基于Cs I(Tl)探测器对α/γ粒子的波形甄别能力,采用电荷比较法设计了一种波形实时甄别系统.介绍了实时甄别系统的设计原理,利用60Co-γ源、241Am-α源对实时系统进行了甄别实验,探究了不同参数对甄别效果的影响,并给出了最优甄别效果下的参数设置.研究表明,设计的数字化实时波形甄别系统体积小,能准确、实时地甄别开α/γ粒子,最佳品质因子大于1.4,事件计数率可达3×105/s.
Based on the discriminating ability of Cs I (Tl) detector for the waveform of α / γ particles, a real-time waveform identification system based on charge comparison was designed.The design principle of real-time discriminating system was introduced.Using 60Co-γ source, 241Am-α source The real-time system was screened experimentally to explore the impact of different parameters on the screening effect and to set the parameters under the optimal screening effect.Research shows that the designed digital real-time waveform screening system is small in size and accurate in real time Open α / γ particles, the best quality factor greater than 1.4, the event count rate up to 3 × 105 / s.