Study of plasma meniscus formation and beam halo in negative hydrogen ion sources

S. Okuda, K. Miyamoto, T. Fukuyama, S. Nishioka, A. Hatayama, A. Fukano, M. Hanada, A. Kojima

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

9 Citations (Scopus)

Abstract

A meniscus of plasma-beam boundary in H- ion sources largely affects the extracted H- ion beam optics. Recently it is shown that the beam halo is mainly caused by the meniscus, i.e. ion emissive surface, close to the plasma grid (PG) where its curvature is large. The purpose of this study is to clarify the effect of H- surface production rate on plasma meniscus and beam halo formation with PIC (particle-in-cell) modeling. It is shown that the plasma meniscus and beam halo formation is strongly dependent on the amount of surface produced H- ions.

Original languageEnglish
Title of host publicationThird International Symposium on Negative Ions, Beams and Sources, NIBS 2012
Pages107-113
Number of pages7
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

  • beam halo
  • negative ion source
  • plasma meniscus

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Okuda, S., Miyamoto, K., Fukuyama, T., Nishioka, S., Hatayama, A., Fukano, A., Hanada, M., & Kojima, A. (2013). Study of plasma meniscus formation and beam halo in negative hydrogen ion sources. In Third International Symposium on Negative Ions, Beams and Sources, NIBS 2012 (pp. 107-113). (AIP Conference Proceedings; Vol. 1515). https://doi.org/10.1063/1.4792776