核探测器性能检测调校系统的研制

Development of Nuclear Sensor Performance Examination System.

介绍一种新型的核仪器辅助调校装置——核探测器性能检测调校系统ＮＳＥＳ（ＮｕｃｌｅａｒＳｅｎｓｏｒＰｅｒｆｏｒｍａｎｃｅＥｘａｍｉｎａｔｉｏｎＳｙｓｔｅｍ）。ＮＳＥＳ可对几乎所有核测井仪的核探头脉冲进行定量幅度分析、快速确定最佳鉴别门槛电压，是调试核测井仪尤其是双探测器（如补偿中子）及核能谱测井仪器的有力工具。使用ＮＳＥＳ可以成十倍地减少调试操作时的放射性同位素源暴露时间，降低对工作人员身体的危害。ＮＳＥＳ由脉冲信号采集面板、ＰＣ主机、绘图打印机等部分组成。由于ＮＳＥＳ的硬、软件系统基于高性能微机和中文Ｗｉｎｄｏｗｓ环境，采用面向对象编程（ＯＯＰ）语言，因而具有较强的功能和友好的人机交互界面。对核测井仪中核探测器部分调试时使用ＮＳＥＳ，可以取代专用的脉冲幅度分析仪及脉冲计数器。

Nuclear Sensor Performance Examination System (NSES) is a new type of auxiliary equipment for adjusting the nuclear logging tools. The NSES system can quantitatively analyse pulse amplitude from the sensors of almost all types of nuclear logging tools and quickly set the reasonable threshold voltage. So, it is an especially useful tool for adjusting those having double sensors (such as compensated neutron tools) and nuclear energy spectrum logging tools. Using NSES system to adjust nuclear tools may shorten the exposure time of radioactive sources by tens of times, hense, decrease the hazard to operators. The hardware system of NSES is composed of a pulse signal acquisition board, a plotter and a high performance PC as host computer. Its software system is based on object oriented program language (OOP) and Windows for Chinese environment, which made the system with powerful function and friendly interface. The NSES system can substitute for special pulse amplitude analyzer and pulse counter in adjusting the sensors of nuclear logging tools. Subject Terms:nuclear logging tool data acquisition pulse performance computer system examination