大面积位置灵敏中低能中子谱仪的时间刻度系统的研究

A time calibration system of large-area position-sensitive detector for intermediate and low energy neutrons

在利用飞行时间法测量中子位置和能量的大面积位置灵敏中子谱仪的研制过程中,提出了利用“绝对时间差”刻度的方法来测量各个电子学的相对时间,系统研究了对光电倍增管时间分辨影响的因素,其中包括光源的种类、光源的发光时间等,并得到使光电倍增管的时间分辨达到最佳60ps的实验条件。

For measuring the energy of neutrons by the TOF ( Time of Flight ) method, a new method named “measuring the absolute time difference” was presented to measure the relative time difference of all the electronics. The time resolution of this method has been studied in detail. A good condition for time resolution was concluded. The best time resolution could be less than 60 ps.