| 用于直线感应加速器光源焦斑测量的双锥厚针孔结构设计 |
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| 引用本文： | 王毅,李勤,刘云龙,龙全红,代志勇.用于直线感应加速器光源焦斑测量的双锥厚针孔结构设计[J].强激光与粒子束,2019,31(6):065102-1-065102-6. |
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| 作者姓名： | 王毅 李勤 刘云龙 龙全红 代志勇 |
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| 作者单位： | 中国工程物理研究院 流体物理研究所, 脉冲功率科学与技术重点实验室, 四川 绵阳 621900 |
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| 基金项目： | 国家自然科学基金项目11875242 |
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| 摘 要： | 研究设计双锥厚针孔结构体，利用小孔成像测量高能强流直线感应加速器光源的焦斑。建立数值计算模型，根据实际光源特性和实验布局条件，模拟光子穿过厚针孔结构的辐射成像过程，分析光源尺寸、分布和偏轴等对焦斑测量的影响。理论计算结果显示对光源物面的空间分辨率可达5 lp/mm。
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| 关 键 词： | 直线感应加速器 焦斑 厚针孔 |
| 收稿时间： | 2018-10-29 |
Structure design of thick pinhole with double cones for spot size measurement of the linear induction accelerator light source |
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| Affiliation: | Key Laboratory of Pulsed Power, Institute of Fluid Physics, CAEP, Mianyang 621900, China |
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| Abstract: | The structure of thick pinhole with double cones is studied and designed for the spot size measurement of the high-energy intense-current linear induction accelerator (LIA) light source. The theoretical model for numerical calculations is built up according to the parameters of the light source and the practical layout of the experimental measurement. The imaging process of photons penetrating through the thick pinhole structure is simulated, and the impact of the spot size, distribution and off axis on the source spot measurement is analyzed. Calculated results show that the spatial resolution on the source plane reaches 5 lp/mm. |
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