深圳大学学报理工版

陈家堉,龙井华,蔡厚智,等.磁聚焦变像管像转角的数值计算与实验研究[J].深圳大学学报理工版,2017,34(No.3(221-330)):278-283.[doi:10.3724/SP.J.1249.2017.03278]
Chen Jiayu,Long Jinghua,Cai Houzhi,et al.Numerical calculation and experimental study on the image rotation angle of image converter tube using magnetic focusing[J].Journal of Shenzhen University Science and Engineering,2017,34(No.3(221-330)):278-283.[doi:10.3724/SP.J.1249.2017.03278]

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磁聚焦变像管像转角的数值计算与实验研究

陈家堉¹,龙井华²,蔡厚智¹,廖昱博¹,郭泉良¹,刘进元¹

1)深圳大学光电子器件与系统教育部/广东省重点实验室,广东深圳 518060; 2)深圳大学物理与能源学院,广东深圳 518060

关键词：核仪器仪表; 分幅变像管; 像转角; 漏磁; 洛伦兹软件; 空间分辨率

Numerical calculation and experimental study on the image rotation angle of image converter tube using magnetic focusing

Chen Jiayu¹, Long Jinghua², Cai Houzhi¹, Liao Yubo¹, Guo Quanliang¹, and Liu Jinyuan¹

Chen Jiayu¹, Long Jinghua², Cai Houzhi¹, Liao Yubo¹, Guo Quanliang¹, and Liu Jinyuan¹1)Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen 518060, Guangdong Province, P.R.China2)College of Physics and Energy, Shenzhen University, Shenzhen 518060, Guangdong Province, P.R.China

Keywords： nuclear instrumentation; image converter tube; image rotation; loss of ampere-turns; Lorenz software; spatial resolution

DOI: 10.3724/SP.J.1249.2017.03278

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参考文献

建立短磁聚焦变像管测试系统,利用Lorentz 3D-EM软件模拟电子运动成像并计算像转角.在不同阴极电压条件下,采用数值模拟研究变像管像转角的变化规律.结果表明,当成像倍率为1:1、阴极电压为-3 kV时,模拟像转角为77.09°. 实验测量的像转角是71.0°,且随阴极电压绝对值的下降而减小.根据模拟与实验的像转角的差值,估算出实验中采用的短磁聚焦透镜漏磁电流安匝数为45.0 A·个.

The test system of short magnetic focusing image tube is established. The electronic motion imaging is simulated and the electron-image rotation angle is calculated with the software 3D-EM Lorentz. Under different cathode voltage conditions, the variation of the image rotation angle is simulated and studied. When the image magnification is 1:1 and the cathode voltage is -3 kV, the calculation result for rotation angle of the image is 77.09°. The actual measurement of the image angle is 71.0° and it decreases with the fall of the absolute value of the cathode voltage. According to the difference between experimental and simulated angles, the loss of ampere-turns of this system is estimated to be 45.0 ampere-turns.

引言
1 理论公式的像转角
2 软件模拟像转角
3 实验测量
4 结果与讨论
5 结语

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