Computer-Aided Design and Optimization of High-Performance Vacuum Electronic Devices
Abstract
During the Phase 1 Option we have focused on developing a suitable model for a more realistic optimization of the collector that was analyzed at the end of the Phase 1 project (Fig. 1). Of particular interest are the minimum mesh density and the characteristics of the secondary populations that yield converged, or nearly converged, solutions in MICHELLE. The result of our investigation was the determination that a modest-sized mesh (^550K elements), together with three generations of secondaries and 10 relaxation cycles, yields reasonably converged results. These parameters were used for an optimization of the collector. This optimization resulted in a structure that showed an increase of over 24% in efficiency as compared to the initial design. However, the optimized parameter values showed some unusual characteristics that may reflect a local, not global, minimum. This will need further study during the Phase 2 project.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 31, 2005
- Accession Number
- ADA434968
Entities
People
- Ben Held
- John F. Deford
- John Petillo
- Liya Chernyakova