Computer-Aided Design and Optimization of High-Performance Vacuum Electronic Devices
Abstract
The layout of the system that we developed during the Phase 1 project is shown in Fig. 1. The primary components of the system are Analyst,, Mathematica, and MICHELLE. Analyst is a commercial electromagnetic analysis tool and acts as the integration platform. It supports the other codes and controls the overall process. Mathematica is a commercial symbolic mathematics package that performs the optimization (under control of Analyst). MICHELLE is a 3D gun code developed by SAIC that was used to in our study. Mathematica is used to simplify the experimentation with various optimization strategies. The actual optimization algorithms are coded in Mathematica's symbolic mathematics language, greatly simplifying the process of testing various methods. Moreover, several common optimization methods are already available in Mathematica as native functions: the statistical methods differential evolution and simulated annealing, and the Nelder-Mead simplex method. Testing these methods does not require any special coding. In the most recent period of the Phase 1 project we have extended the MICHELLE interface in Analyst to allow the use of geometric parameters in an optimization. The restriction on the number of parameters was also removed, and optimizations with up to 14 parameters were performed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 24, 2004
- Accession Number
- ADA428963
Entities
People
- Ben Held
- John F. Deford
- John Petillo
- Liya Chernyakova