兼具触发功能和波形测量的闪烁探测系统

A Scintillation Detection System with Functions of Triggering and Waveforms Measurement

利用无源低通滤波和无源衰减器技术,研制了一种兼具触发功能和波形测量的闪烁探测系统。该系统有效避免了宇宙射线及暗噪声对探测系统触发功能的影响,克服了由于阻抗失配造成的时域反射对探测器波形测量带来的干扰,解决了脉冲辐射场波形测量中单套闪烁探测系统无法同时实现触发和脉冲波形无畸变测量的技术难题。实验结果表明,该系统既能确保触发功能的可靠性,又能实现脉冲波形测量的准确性,有效提高了系统效能。同时,利用该系统对宇宙射线的响应特征,可实现对系统工作状态的实时监测。

A set of scintillation detection system with pulse triggering and waveforms measure- ment is developed. The system adopts passive low pass filter and signal attenuator technologies, it avoids the effects of interference pulses from cosmic rays and dark noises on triggering, and o- vercomes the influence of time domain reflection caused by impedance mismatch on waveform distortion. The results indicate that the system does not only ensure high reliability of trigge- ring, but also gets enough accuracy of waveforms measurement.