RF plasma modeling of the Linac4 H- ion source

S. Mattei, M. Ohta, A. Hatayama, J. Lettry, Y. Kawamura, M. Yasumoto, C. Schmitzer

研究成果: Conference contribution

13 被引用数 (Scopus)

抄録

This study focuses on the modelling of the ICP RF-plasma in the Linac4 H- ion source currently being constructed at CERN. A self-consistent model of the plasma dynamics with the RF electromagnetic field has been developed by a PIC-MCC method. In this paper, the model is applied to the analysis of a low density plasma discharge initiation, with particular interest on the effect of the external magnetic field on the plasma properties, such as wall loss, electron density and electron energy. The employment of a multi-cusp magnetic field effectively limits the wall losses, particularly in the radial direction. Preliminary results however indicate that a reduced heating efficiency results in such a configuration. The effect is possibly due to trapping of electrons in the multi-cusp magnetic field, preventing their continuous acceleration in the azimuthal direction.

本文言語English
ホスト出版物のタイトルThird International Symposium on Negative Ions, Beams and Sources, NIBS 2012
ページ386-393
ページ数8
DOI
出版ステータスPublished - 2013
イベント3rd International Symposium on Negative Ions, Beams and Sources, NIBS 2012 - Jyvaskyla, Finland
継続期間: 2012 9 32012 9 7

出版物シリーズ

名前AIP Conference Proceedings
1515
ISSN(印刷版)0094-243X
ISSN(電子版)1551-7616

Other

Other3rd International Symposium on Negative Ions, Beams and Sources, NIBS 2012
CountryFinland
CityJyvaskyla
Period12/9/312/9/7

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Plant Science
  • Physics and Astronomy(all)
  • Nature and Landscape Conservation

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