Study on an azimuthal line cusp ion source for the KSTAR neutral beam injector

In this study it is found that the cusp magnetic field configuration of an anode bucket influences the primary electron behavior. An electron orbit code (ELEORBIT code) showed that an azimuthal line cusp (cusp lines run azimuthally with respect to the beam extraction direction) provides a longer pri...

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Bibliographic Details
Published in:Review of scientific instruments 2008-02, Vol.79 (2 Pt 2), p.02B310-02B310
Main Authors: Jeong, Seung Ho, Chang, Doo-Hee, In, Sang Ryul, Lee, Kwang Won, Oh, Byung-Hoon, Yoon, Byung-Joo, Song, Woo Sob, Kim, Jinchoon, Kim, Tae Seong
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ANODES
BEAM EXTRACTION
BEAMS
CONFINEMENT TIME
CUSPED GEOMETRIES
ELECTRONS
ION SOURCES
MAGNETIC FIELDS
PLASMA
PLASMA CONFINEMENT
PLASMA DENSITY
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Summary:In this study it is found that the cusp magnetic field configuration of an anode bucket influences the primary electron behavior. An electron orbit code (ELEORBIT code) showed that an azimuthal line cusp (cusp lines run azimuthally with respect to the beam extraction direction) provides a longer primary electron confinement time than an axial line cusp configuration. Experimentally higher plasma densities were obtained under the same arc power when the azimuthal cusp chamber was used. The newly designed azimuthal cusp bucket has been investigated in an effort to increase the plasma density in its plasma generator per arc power.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.2805351