Development of High Power Irradiating Accelerator  

大功率辐照加速器的研制

作　　者：郑曙昕[1] 唐传祥[1] 林郁正[1] 陈怀璧[1] 童德春[1] 施嘉儒[1] 徐刚[1] 刘耀红[2] 刘晋升[2] 何宇[2] 管伟强[2] 李国华[2] 

机构地区：[1]清华大学工程物理系,北京100084 [2]同方威视股份技术有限公司,北京100084

出　　处：《Chinese Physics C》2008年第z1期226-228,共3页中国物理C（英文版）

摘　　要：The design of 10MeV/20kW high power irradiating accelerator is presented.The Backward-Traveling-Wave (BTW)accelerating structure is adopted.This structure combines the advantage of traveling-wave accelerator structure with low power reflection and high stability and standing-wave accelerator structure with high shunt impedance.The work frequency of this accelerator is 2856MHz.Designed by Code AccDesign which is coded by ourselves,the output electron beam with final energy 10MeV and peak current 300mA was reached.The length of the accelerating tube is 1.5m,and the power efficiency from microwave to electron beam is 66%.The temperature and stress distribution were simulated.And the frequency shift by microwave loss was calculated.介绍了10MeV/20kW大功率辐照加速器的设计.该加速器采用返波型行波加速结构加速管,综合了常规行波加速结构微波反射小、频率稳定性好和驻波加速结构分流阻抗高的优点.加速器工作于S波段,中心频率为2856MHz.利用自编的模拟程序AccDesign进行物理设计,设计输出电子束能量为10MeV,脉冲流强300mA,加速管总长1.5m,模拟计算结果显示微波至电子束的转换效率为66%.同时利用计算机仿真程序对加速腔的温度和应力分布进行了计算,得到了微波功率损耗对加速腔频率的影响.

关 键 词：high power irradiating accelerator backward-traveling-wave traveling wave 

分 类 号：TL542.2[核科学技术—核技术及应用]