10 lp/mm空间分辨率高能CT系统  

High-energy CT system with 10 lp/mm spatial resolution

作　　者：刘清华[1] 李敬[1] 单李军[1] 肖德鑫[1] 潘清[1] 刘宇[1] 王汉斌[1] 胡栋材[1] 张鹏[1] 李寿涛 王建新[1] 张德敏[1] 闫陇刚[1] 张小丽[1] 甘孔银[1] 张成鑫[1] 李鹏[1] 沈旭明[1] 柏伟[1] 陈云斌[1] 李晓辉[2] 王帅华[3] 余勇[4] 陈镐[5] 胡秀太 马国武[1] 周奎[1] 周征 王远[1] 杨兴繁[1] 吴岱[1] 黎明[1] 陈门雪[1] 胡进光[1] 赵剑衡[1] 范国滨[7] Liu Qinghua;Li Jing;Shan Lijun;Xiao Dexin;Pan Qing;Liu Yu;Wang Hanbin;Hu Dongcai;Zhang Peng;Li Shoutao;Wang Jianxin;Zhang Demin;Yan Longgang;Zhang Xiaoli;Gan Kongyin;Zhang Chengxin;Li Peng;Shen Xuming;Bo Wei;Chen Yunbin;Li Xiaohui;Wang Shuaihua;Yu Yong;Chen Hao;Hu Xiutai;Ma Guowu;Zhou Kui;Zhou Zheng;Wang Yuan;Yang Xingfan;Wu Dai;Li Ming;Chen Menxue;Hu Jinguang;Zhao Jianheng;Fan Guobin(Institute of Applied Electronics,CAEP,Mianyang 621900,China;Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China;Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China;Institute of Systems Engineering,CAEP,Mianyang 621900,China;Institute of Materials,CAEP,Jiangyou 621907,China;Jianghe Chemical Technology Co.,Ltd.Yichang 444200,China;China Academy of Engineering Physics,Mianyang 621900,China)

机构地区：[1]中国工程物理研究院应用电子学研究所,四川绵阳621900 [2]中国科学院高能物理研究所,北京100049 [3]中国科学院福建物质结构研究所,福州350002 [4]中国工程物理研究院总体工程研究所,四川绵阳621900 [5]中国工程物理研究院材料研究所,四川绵阳621907 [6]湖北三江航天江河化工科技有限公司,湖北宜昌444200 [7]中国工程物理研究院,四川绵阳621900

出　　处：《强激光与粒子束》2022年第12期96-97,共2页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(11975218,12005211,11805192,11905210,12035012);中国工程物理研究院创新发展基金项目(CX2019036,CX2019037)。

摘　　要：报道了基于光阴极S波段电子直线加速器建成的9 MeV高能微焦点射线成像系统“精卫”,X射线束横向尺寸小于100μm,7 h剂量波动低至1.6%。初步开展成像实验结果表明:双丝像质计清晰分辨13D号丝,丝直径0.05 mm,CT测试卡测得空间分辨率优于10 lp/mm,装置同时兼容电子束能量6~18 MeV可调。Based on the photocathode S-band electron linac,a high-energy(9 MeV)micro-focus CT system named“Jingwei”was built.The focal-point is less than 100μm,and the 7 h dose fluctuation is as low as 1.6%.An initial imaging experiment was also carried out.The focal spot of the dual-wire image quality meter clearly distinguished the 13D wire with a wire diameter of 0.05 mm,and the CT spatial resolution measured by a test card is better than 10 lp/mm.The electron beam energy of the system is also adjustable from 6 MeV to 18 MeV.

关 键 词：高能微焦点X射线源 高能工业CT 直线加速器 光阴极 

分 类 号：TG115.28[金属学及工艺—物理冶金]