RF plasma modeling of the Linac4 H- ion source

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

13 Citations (Scopus)

Abstract

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.

Original languageEnglish
Title of host publicationThird International Symposium on Negative Ions, Beams and Sources, NIBS 2012
Pages386-393
Number of pages8
DOIs
Publication statusPublished - 2013 Apr 12
Event3rd International Symposium on Negative Ions, Beams and Sources, NIBS 2012 - Jyvaskyla, Finland
Duration: 2012 Sep 32012 Sep 7

Publication series

NameAIP Conference Proceedings
Volume1515
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

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

Keywords

  • Monte Carlo method
  • Particle-in-cell
  • Plasma simulation
  • RF negative ion source

ASJC Scopus subject areas

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

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  • Cite this

    Mattei, S., Ohta, M., Hatayama, A., Lettry, J., Kawamura, Y., Yasumoto, M., & Schmitzer, C. (2013). RF plasma modeling of the Linac4 H- ion source. In Third International Symposium on Negative Ions, Beams and Sources, NIBS 2012 (pp. 386-393). (AIP Conference Proceedings; Vol. 1515). https://doi.org/10.1063/1.4792807