Report on EBIS Development at Texas A&M

The general design and operation of a 20 cm EBIS are described. Although good beam transmission and containment are obtained, charge states are limited to low values by the short neutralization time. Improvements to the source, including new containment tube structure, tripling of the containment region, revised cryopumping system, a fully steerable extractor, and time-of-flight change state analysis system, are being carried out.