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磁聚焦分幅变像管空间分辨特性

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针对磁聚焦分幅变像管短磁透镜个数与微通道板(MCP)面曲率、成像范围、旋转角度之间的关系,采用蒙特卡罗方法、有限差分法和有限元法,分别对单磁透镜、双磁透镜和三磁透镜3种磁聚焦分幅变像管的空间分辨特性进行理论和实验研究。仿真结果表明,磁聚焦分幅变像管的短磁透镜个数越多,成像面曲率越小,像面越接近平面;随着短磁透镜个数的增加,成像范围也逐渐增大;同时,在MCP面落点位置处电子的旋转角度随着短磁透镜个数的增加而减小。采用3个磁透镜时,在阴极面直径36 mm内,磁聚焦分幅变像管空间分辨力为10 lp/mm。
Spatial resolution characteristics of magnetic focusing framing tube
Theoretical and experimental research of the spatial resolution characteristics of magnetic focusing framing tubes with single magnetic lens,double magnetic lenses and triple magnetic lenses are simulated and studied by Monte Carlo method,finite difference method and finite element method.The relationship among the number of short magnetic lenses and the surface curvature of Micro-Channel Plate(MCP),imaging range and rotation angle is studied.The results show that the more the number of short magnetic lenses,the smaller the curvature of the imaging surface,the flatter the image surface.The imaging range increases with the increase of the number of short magnetic lenses;the electron rotation angle at the MCP point decreases with the increase of the number of short magnetic lenses.With triple magnetic lenses,the spatial resolution of the framing tube is 10 lp/mm within the diameter of 36 mm.

inertial confinement fusionframing tubemagnetic lensspatial resolutionpulse dilation

罗秋燕、林楷宣、陈嘉杰、王佳恒、邓萱、刘俊凯、杨恺知、黄峻堃、王东、刘进元、牛丽红、蔡厚智

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深圳大学 物理与光电工程学院,广东 深圳 518060

北方夜视科技有限公司,云南 昆明 650106

惯性约束聚变 分幅变像管 磁透镜 空间分辨力 脉冲展宽

国家自然科学基金资助项目广东省基础与应用基础研究基金资助项目广东省基础与应用基础研究基金资助项目深圳市科技计划基金资助项目深圳市科技计划基金资助项目深圳市科技计划基金资助项目

117751472019A15150114742019A1515110130JCYJ20210324095007020JCYJ20200109105201936JCYJ20190808115605501

2024

太赫兹科学与电子信息学报
中国工程物理研究院电子工程研究所

太赫兹科学与电子信息学报

CSTPCD
影响因子:0.407
ISSN:2095-4980
年,卷(期):2024.22(8)