| 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, 等. 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(03). |
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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： | 1.中国工程物理研究院 流体物理研究所, 四川 绵阳 621 900 |
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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 |
Time-resolved spot size diagnosis for high-energy X-ray source |
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| li chenggang, deng jianjun, shi jinshui, et al. Time-resolved spot size diagnosis for high-energy X-ray source[J]. High Power Laser and Particle Beams, 2010, 22. |
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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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| Affiliation: | 1. 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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