Electron and Ion Beams, Accelerators

Computer design of electrostatic systems of charge particle optics: Systems with spherical electrodes and a fine-structure grid

L. V. Bad'in, S. K. Dyomin, S. I. Safronov, R. P. Tarasov

All-Russia Research Institute of Automatics named after N L Dukhov, Moscow

Abstract: Problems in computer-aided design of 3D optical systems for charged particle optics are analyzed. The results of simulation of electron-optical systems of optoelectronic transducers with two cathode packs (spherical cathode-plane fine-structure grid as the accelerating electrode and plane cathode-spherical fine-structure grid) are considered. We note a low technological efficiency of such structures and unsatisfactory quality (as it regards some parameters) of the image being recorded due to spherical electrodes and a fine-structure grid in the cathode pack. Numerical analysis of the effect of adjustment of the design on the quality of the image being recorded is carried out.

Received: 29.09.2010

 English version: Technical Physics, 2011, 56:8, 1158–1166

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