An Evaluation of the 225W Electron Beam Machine.
Abstract
Diagnostic experiments have been conducted by the Harry Diamond Laboratories to determine the beam characteristics of the Physics International (PI) 225W Electron Beam Machine. The purpose of these experiments was to provide reproducibility, uniformity, and depth-dose information for material experiments being conducted by personnel from Los Alamos Scientific Laboratory. The 225W uses magnetic-beam transport; hence many stable fluence levels and beam sizes were available. However, only the 45 cal/sq cm, 6.5-sq cm area level was studied. At this level, the shot-to-shot reproducibility had a standard deviation which was 10 to 12 percent of the mean. It was also found that the beam had an annular pattern, sometimes varying as much as 60 percent from the mean fluence. The diode diagnostics, as well as a PI Faraday cup, were used to generate an electron energy spectrum having an average electron energy of 247 keV. This spectrum was used, in turn, to predict the depth-dose profile in carbon.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1976
- Accession Number
- ADA035857
Entities
People
- Dale R. Schallhorn
- Gary L. Skillington
- Timothy R. Oldham
Organizations
- Harry Diamond Laboratories