Plasma Window for SNS Target

Abstract

Proton beam loss between the vacuum window and the target in the SNS ring to target beam transport can be completely eliminated, if Plasma Windows replace solid vacuum windows. Consequently, all problems associated with proton solid-window interaction will no longer exist. The Plasma Window is a novel apparatus, which utilized a short plasma arc to provide a vacuum-atmosphere interface without a ny intrusive solid structures. Extrapolating present technology to SNS implementation is a straightforward engineering issue. Among the many advantages that this technology offers are: elimination of a 4% proton beam loss, water removal from vacuum interface and elimination of radioactive water problems, as well as power and vacuum equipment savings.