A library of codes for design of depressed collectors for gyrotrons

Summary form only given. A library of computer codes has been developed to assist in various stages of depressed collector design. They help to define the regions of accessibility for electrons, and provide pre and post processors for the code which simulates electron trajectories. Contours of effective potential can be drawn against the backdrop of the collector geometry. The effect of varying different control parameters can be observed on-line. Three dimensional representation of effective potential can be obtained, thus providing insight into the behavior of the electron trajectories. Animated contours can be generated to get an overview of the effect of variations due to different parameters. The codes make it possible to reduce the design time and to evaluate new designs in terms of collector efficiency, division of beam current between different collectors and the heat dissipation density profile.