High Energy Dense Ribbon Beams and High Harmonic Gyrotron at Millimeter Wavelengths
Final rept. 1 Mar 1986-30 Jun 1990
CASE WESTERN RESERVE UNIV CLEVELAND OH
Pagination or Media Count:
In this report, the progress made on the ribbon sheet beams and the rectangular harmonic gyrotron is presented. A relativistic three dimensional electron gun simulation program, called 3-D TRAJ is completed. A 3-D general numerical Poisson solvers is included in the program to take into account the nonuniform electrode boundaries that are common to ribbon beam guns or that may be required for any other gun structure. A novel computer technique is developed to generate the complicated 3-D general boundary data file of the MIG type guns by using a bot-map technique. At the same time, a theoretical approach to the design of MIG type guns is also undertaken. The location and the shape of the cathode is determined from the various conservation equations. Using the laminar flow equations and Harker synthesis technique, the required anode shapes are then determined. Finally, the resulting electrode shapes are used in the simulation of the MIG-gun using the 3-D TRAJ program. Experimental set-up to test the various MIG type electron guns and the axially grooved rectangular gyrotron is close to being completed.
- Electrical and Electronic Equipment
- Computer Programming and Software