| 高能X射线源焦斑尺寸的时间分辨诊断 |
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| 引用本文： | 李成刚,邓建军,石金水,李勤,江孝国,王远,张开志,李劲,章林文.高能X射线源焦斑尺寸的时间分辨诊断[J].强激光与粒子束,2010,22(3). |
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| 作者姓名： | 李成刚 邓建军 石金水 李勤 江孝国 王远 张开志 李劲 章林文 |
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| 作者单位： | 中国工程物理研究院 流体物理研究所, 四川 绵阳 621900 |
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| 基金项目： | 国防科技基础研究基金 |
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| 摘 要： | 将门控分幅相机与快闪烁晶体结合,构成时间分辨X射线诊断系统,对神龙一号直线感应加速器产生的高能脉冲X射线源焦斑进行了测量,在时间间隔为10 ns的情况下,获得了焦斑尺寸随时间的变化曲线。在此基础上,设计了单像素尺寸为0.78 mm×0.78 mm的LYSO闪烁晶体阵列,并进行了X射线照射晶体阵列发光的初步实验,结果表明该阵列可用于高能X射线源焦斑的时间分辨诊断,并能显著提高成像的空间分辨力。
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| 关 键 词： | X射线焦斑 时间分辨 LYSO晶体 直线感应加速器 |
| 收稿时间： | 1900-01-01; |
Time-resolved spot size diagnosis for high-energy X-ray source |
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| Li Chenggang,Deng Jianjun,Shi Jinshui,Li Qin,Jiang Xiaoguo,Wang Yuan,Zhang Kaizhi,Li Jin,Zhang Linwen.Time-resolved spot size diagnosis for high-energy X-ray source[J].High Power Laser and Particle Beams,2010,22(3). |
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| Authors: | Li Chenggang Deng Jianjun Shi Jinshui Li Qin Jiang Xiaoguo Wang Yuan Zhang Kaizhi Li Jin Zhang Linwen |
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| Institution: | Institute of Fluid Physics, CAEP, P. O. Box 919-106, Mianyang 621900, China |
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| Abstract: | A time-resolved measurement system of spot size for X-ray sources was constructed by coupling a gated CCD camera with a fast scintillator crystal. The spot size of the high-energy pulsed X-ray source from the Dragon- Ⅰ linear induction accelerator was measured at 10 ns intervals, and a curve of spot size versus time was obtained. An LYSO crystal array with a pixel size of 0.78 mm was also designed and tested in X-ray field, and primary experimental results show the array can be used for time-resolved spot size diagnosis of the high energy X-ray source and significantly improve the spatial resolution of X-ray images. |
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| Keywords: | X-ray spot size temporal resolution LYSO crystal linear induction accelerator |
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