Experiments on improving the efficiency of the Bevatron Ion Source.
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Authors
Stone, Troy Edward
Subjects
Advisors
Date of Issue
1955
Date
Publisher
Monterey, CA: Naval Postgraduate School
Language
Abstract
A study has been conducted to determine the focal properties of an ion source that is typical of those used with the Bevatron. Beam-intensity patterns have been obtained for various focusing conditions. The effects of space-charge repulsion and lens aberration have been investigated. Losses through Coulomb scattering on residual gas molecules have been observed, and a curve showing variation of these losses with variation of energy through the focus electrode has been obtained. Pressure throughout the accelerating column was found to be an important factor, and losses occasioned through slight increases in the normal operating pressure have been recorded.
All previous ion sources for the Bevatron have been designed for presentation of a real image to the subsequent injection system. A virtual-image source has been designed, constructed and tested on the Bevatron.
Type
Thesis