Inter-dynode Voltage Optimization of Discrete Dynode Electron Multipliers by Numerical Simulation
2023 24th International Vacuum Electronics Conference (IVEC)(2023)
摘要
In order to improve the performance of discrete dynode electron multipliers, the effect of inter-dynode voltage on device gain was investigated by numerical simulation, and the distribution of inter-dynode voltages was optimized. The investigation results reveal that for an electron multiplier with 11-stage dynodes, when the inter-dynode voltage of the first 10 dynodes is 3.1 times that of the last 1 dynode, it can obtain a higher gain due to the improvement of electric field intensity and electron collection efficiency, whose overall electron collection efficiency and device gain increase by about 63% and 95%, respectively, in comparison with the case of applying the same inter-dynode voltage for all the dynodes.
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关键词
discrete dynode electron multipliers,inter-dynode voltage,gain,numerical simulation
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