Plasma and Beam Production Experiments with HYBRIS, a Microwave-Assisted H-ion Source.

Keller, R. ; Kwan, J. ; Hahto, S. ; Regis, M. ; Wallig, J.

Technical Information Center Oak Ridge Tennessee

关键词: Plasma diagnostics;    Electron beams;    Hydrogen;    Ion sources;    Microwave heating;   

RP-ID  :  DE2007910594

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

A two-stage ion source concept had been presented a few years ago, consisting of a proven H-ion source and a 2.45-GHz Electron Cyclotron-Resonance (ECR) type ion source, here used as a plasma cathode. This paper describes the experimental development path pursued at Lawrence Berkeley National Laboratory, from the early concept to a working unit that produces plasma in both stages and creates a negative particle beam. Without cesiation applied to the second stage, the H-fraction of this beam is very low, yielding 75 micro-amperes of extracted ion beam current at best. The apparent limitations of this approach and envisaged improvements are discussed.