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10 lp/mm空间分辨率高能CT系统
引用本文:刘清华,李敬,单李军,肖德鑫,潘清,刘宇,王汉斌,胡栋材,张鹏,李寿涛,王建新,张德敏,闫陇刚,张小丽,甘孔银,张成鑫,李鹏,沈旭明,柏伟,陈云斌,李晓辉,王帅华,余勇,陈镐,胡秀太,马国武,周奎,周征,王远,杨兴繁,吴岱,黎明,陈门雪,胡进光,赵剑衡,范国滨.10 lp/mm空间分辨率高能CT系统[J].强激光与粒子束,2022,34(12):124001-1-124001-2.
作者姓名:刘清华  李敬  单李军  肖德鑫  潘清  刘宇  王汉斌  胡栋材  张鹏  李寿涛  王建新  张德敏  闫陇刚  张小丽  甘孔银  张成鑫  李鹏  沈旭明  柏伟  陈云斌  李晓辉  王帅华  余勇  陈镐  胡秀太  马国武  周奎  周征  王远  杨兴繁  吴岱  黎明  陈门雪  胡进光  赵剑衡  范国滨
作者单位:1.中国工程物理研究院 应用电子学研究所,四川 绵阳 621900
基金项目: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100 μm,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。

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
收稿时间:2022-10-01

High-energy CT system with 10 lp/mm spatial resolution
Institution:1.Institute of Applied Electronics, CAEP, Mianyang 621900, China2.Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China3.Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China4.Institute of Systems Engineering, CAEP, Mianyang 621900, China5.Institute of Materials, CAEP, Jiangyou 621907, China6.Jianghe Chemical Technology Co.,Ltd. Yichang 444200,China7.China Academy of Engineering Physics, Mianyang 621900, China
Abstract: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 100 μm, 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.
Keywords:
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