NFZ-10辐照用电子直线加速器束流性能测试  

The Beam Performance Test of NFZ 10 Electron Linac for Irradiation

作　　者：高澎[1] 杭德生[1] 赵明华[1] 肖林[1] 丁小平[1] 

机构地区：[1]南京大学物理系,南京210093

出　　处：《南京大学学报（自然科学版）》2004年第1期109-115,共7页Journal of Nanjing University（Natural Science）

摘　　要：　辐照加工是一种新兴的高技术加工方法,广泛应用于改善材料性能、生成新材料、消毒灭菌、食品保鲜等领域,其应用前景十分诱人.介绍了NFZ＿10辐照用电子直线加速器的主要束流性能指标和这些指标的测试方法及测量结果.结果表明,主要束流性能指标均达到和超过设计指标要求,优于国家行业标准指标要求.其中:能量不稳定度≤±1.8%,优于设计指标≤±3%;束流不稳定度≤±0.9%,优于设计指标≤±5%;扫描不均匀度≤±3.2%,优于设计指标≤±5%的要求.Radiation processing is a rising high tech processing method which has been widely used in radiation modification of solid materials, radiation cross linking of macromolecule, pulse radiolysis, food preservation and sterilization of medical products, etc. The application prospect is very attractive and the economic benefits are gneat. Compared with the ()^(60)Co source, the industrial irradiation electron linear accelerator is an ideal radiation processing source because the energy utilization ratio and the working ability of the accelerator's electron beam are very high. The quality of radiation processing is dependent upon the operation reliability, the radiation dose stability and the radiation dose uniformity. Therefore, in a radiation processing source using an industrial irradiation electron linear accelerator, the key specifications of the energy stability, the beam stability and the scan uniformity, etc. are very stringent.This paper has focused on introducing the main beam specifications of NFZ 10 industrial irradiation electron linear accelerator as well as their test methods and test results of performances. The main design specifications of NFZ 10 accelerator are electron beam energy from 6 to 10 MeV at five steps (6, 7, 8, 9 , 10 MeV); the maximum electron beam average current of 400 μA; maximum electron beam average power of 3 kW; the maximum electron beam scanning width of 100 cm. The test results show that all the beam performances have reached or exceeded the design and the requirement of the National Profession Standard. Among them, the test result of energy instability is less than ±1.8 % which is better than the design of ±3 %; the beam instability is less than ±0.9 % which is better than the design of ±5 % and the scan non uniformity is less than ±3.5 % which is better than the design of ±5 %.

关 键 词：电子加速器 束流 性能测试 辐照 

分 类 号：O572.211[理学—粒子物理与原子核物理]