title: Arc plasma simulation of the KAERI large ion source.
abstract: The KAERI large ion source, developed for the KSTAR NBI system, recently produced ion beams of 100 keV, 50 A levels in the first half campaign of 2007. These results seem to be the best performance of the present ion source at a maximum available input power of 145 kW. A slight improvement in the ion source is certainly necessary to attain the final goal of an 8 MW ion beam. Firstly, the experimental results were analyzed to differentiate the cause and effect for the insufficient beam currents. Secondly, a zero dimensional simulation was carried out on the ion source plasma to identify which factors control the arc plasma and to find out what improvements can be expected.
authors.affiliation: Fusion Engineering Center, KAERI, Daejeon, Republic of Korea.
authors.forename: S R
authors.initials: SR
authors.lastname: In
authors.forename: S H
authors.initials: SH
authors.lastname: Jeong
authors.forename: T S
authors.initials: TS
authors.lastname: Kim