基于ElecNet的凸度仪电离室电场分布模拟  

Simulation of Electric Field Distribution in Ionization Chamber of Profile Gauge Based on ElecNet

作　　者：郝朋飞[1] 吴志芳[1] 王振涛[1] 沈毅雄[1] 

机构地区：[1]清华大学核能与新能源技术研究院核检测技术北京市重点实验室,北京100084

出　　处：《原子能科学技术》2014年第7期1269-1273,共5页Atomic Energy Science and Technology

基　　金：北京市科技计划资助项目(Z080903027508);国家自然科学基金资助项目(11205095)

摘　　要：凸度仪对探测器响应时间有很高的要求,对于高压充气电离室探测器,电离室内电场分布是决定其响应时间的一个重要因素。本文通过有限元电场模拟软件ElecNet对凸度仪电离室内部的电场分布进行了仿真,根据仿真结果从理论上分析了高压充气电离室电场分布对其输出波形信号的影响,解释了出现"拖尾"现象的机理,为凸度仪电离室的设计和改进提供了指导。There are high requirements to the time response of detector in profile gauge . For the high gas-pressurized ionization chamber detector ,the electric field distribution in chamber is one of the important factors to determine its response time .The electric field distribution in the ionization chamber was simulated using the electric field simula-tion software ElecNet which was based on finite element analysis methods .Influence of the electric field distribution in ionization chamber on its output waveform signal was analyzed typically ,the mechanism of trailing signal was also explained according to the simulation results .The research results provid guidance for the design and improvement of ionization chamber in profile gauge .

关 键 词：凸度仪 高压充气电离室 电场分布模拟 ElecNet 

分 类 号：TL81[核科学技术—核技术及应用]