Development of Monitoring System for Fast Timing Scintillation Counters of Cosmic Ray Air Showers.

研制了一个监测用于观测宇宙线空气簇射的闪烁计数器的快速计时的计时偏移值和响应的线性度的系统，并与Mt.纪仓纪仓。该监测系统由氮气脉冲激光发生器、光强恢复衰减器、光缆传输光脉冲至各闪烁计数器、微电脑自动启动系统组成。监测定时偏移值及其对光强的依赖关系，误差精度为0.13 ns。对三级光强范围内的闪烁计数器的线性曲线进行了检验。该系统将为宇宙超高能伽马射线入射方向的探测提供高分辨率。

A system, which monitors the timing offset values of fast timing and the linearlity of responces of the scintillation counters used for the observation of cosmic ray air showers, are developed and connected to the air shower array of Mt. Norikura. The monitoring system is composed of a generator of nitrogen gas pulse laser, an attenuation unit to regurate the light intensity, optical fiber cables to deliver the light pulses to each scintillation counter, and a micro-computer to automatically oparate the system. The timing offset value and its dependence on light intensity are monitored with a accuracy of 0.13ns of error. The linearity curve of scintillation counters was checked for the range of three order of light intensity. This system will offer a high resoluving power for the detection of incident direction of cosmic ultra high energy gamma rays.