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 doi:

DOI: 10.3724/SP.J.1249.2017.03278

Journal of Shenzhen University Science and Engineering (深圳大学学报理工版) 2017/34:3 PP.278-283

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

• Chen Jiayu 1   Long Jinghua 2   Cai Houzhi 1   Liao Yubo 1   Guo Quanliang 1   Liu Jinyuan 1
• 1.Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen 518060, Guangdong Province, P.R.China;
• 2.College of Physics and Energy, Shenzhen University, Shenzhen 518060, Guangdong Province, P.R.China

Abstract：
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.

Key words：nuclear instrumentation,image converter tube,image rotation,loss of ampere-turns,Lorenz software,spatial resolution

ReleaseDate：2017-06-16 14:08:44

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