An experimental and analytical program has been underway to study the relationship between various geometrical electrode configurations, spacings, materials, and surface finishes as functions of voltage in the electron gun region of high-power, modulating anode types of linear beam microwave tubes. The necessary experimental processing equipment and the high-voltage test facility needed for checking experimental structures have been designed, constructed, tested, and evaluated. The equipment component design features are discussed in detail.nDesign and construction features of the first experimental test vehicle are reviewed in depth. This test vehicle has been fully evaluated and the results agree with predicted Fowler-Nordheim current-voltage relationships.nAppropriate computer and trajectory plotter programs have been set up for determining equipotential plots and for analyzing beam behavior. The plotter and computer equipment is reviewed, the programming features are outlined, and the applicable techniques for the theoretical design and anal¬ysis of electrode configurations and beam behavior are discussed.
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