神龙二号多脉冲X射线剂量测量  

Multi pulse X-ray dose measurement of Dragon-Ⅱ

作　　者：李勤[1] 刘军[1] 王毅[1] 刘云龙[1] 李天涛[1] 石金水[1] 李劲[1] Li Qin;Liu Jun;Wang Yi;Liu Yunlong;Li Tiantao;Shi Jinshui;Li Jin(Institute of Fluid Physics,CAEP,P.O.Box 919-106,Mianyang 621900,China)

机构地区：[1]中国工程物理研究院流体物理研究所,四川绵阳621900

出　　处：《强激光与粒子束》2019年第1期75-79,共5页High Power Laser and Particle Beams

基　　金：国防科技专项研究基金项目

摘　　要：神龙二号加速器可以产生三个脉冲宽度约80ns(FWHM)、脉冲间隔约500ns的X射线,为了获得每个脉冲X射线剂量,采用康普顿探测器和热释光剂量计相结合的方法进行测量。针对神龙二号加速器X射线能谱分布,采用MCNP程序优化设计康普顿探测器,测量多脉冲X射线信号,获得每个脉冲的剂量比例,应用热释光剂量计测量多脉冲X射线总剂量,由总剂量和剂量比例准确得到每个脉冲X射线剂量,实现神龙二号加速器多脉冲X射线剂量测量。Dragon-Ⅱis a linear induction accelerator,which can produce up to three bremsstrahlung X-ray pulses.Each X-ray pulse width is about 80 ns(FWHM),and time interval between pulses is about 500 ns.Each pulse X-ray dose is a critical parameter for Dragon-Ⅱ.Compton detector,combined with thermo luminescent dosemeter(TLD),was used to measure X-ray dose per pulse.MCNP program was used to design a Compton detector according to the characteristic of bremsstrahlung produced by Dragon-Ⅱaccelerator.Compton detector can measure multi-pulse X-ray signal and one pulse X-ray signal’s integral is proportional to each pulse X-ray dose,and according to the total dose of three pulse X-ray obtained from TLD,each pulse X-ray dose can be obtained accurately.

关 键 词：康普顿探测器 热释光剂量计 多脉冲 X射线剂量 测量 

分 类 号：TL506[核科学技术—核技术及应用]