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


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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