SBS Modeling: Status and Assessment
Abstract
This report describes the status of the Detailed SBS Model being developed by WJSA in the Arlington, Va. office. Once completed, the WJSA detailed SBS Model will be used for predicting the performance of SBS cell designs being considered for SBL applications. The goal of the effort has been to develop a full three-dimensional (two transverse and one longitudinal) wave optics SBS model with diffraction capable of convergence to a solution using reasonable computer resources. Previous efforts have not been entirely successful in the regime of interest (i.e. high reflectivity) due to convergence instability and due to excessive computer costs in memory and time. Although the Rocketdyne GLAD SBS model is a full three-dimensional treatment with physical optics, it uses excessive computer time in the few cases for which it does converge. Until recently, the most successful model was the Lehmberg BOUNCE code, from which the WJSA/Albuquerque single transverse dimension model and the TRW BRIWON model were derived. Although BOUNCE does not require excessive computer resources (primarily because of the single transverse dimension), it does have convergence problems for cases with reflectivities higher than about 15%, and there is some skepticism regarding the validity of the results since the code is limited to a single transverse dimension. BOUNCE is, however, the current industry standard.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 21, 1989
- Accession Number
- ADA264267
Entities
People
- Eugene J. Sigal