The effect of transport and extraction of non-uniform surface produced H- in large multi-aperture negative ion sources

S. Fujita, T. Yamamoto, M. Yoshida, M. Kashiwagi, A. Hatayama

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

Abstract

In order to compare the simulation and the experiments of the extracted H- beams in JT-60SA negative ion source, an analysis of H- ion transport has been conducted. It has been shown that, under the present conditions, the calculated beam profile correlates well with the experiments, and the majority of the extracted H- ions are produced at the surface of the extraction aperture. However, since those H- ions could contribute to beam halo, a careful evaluation of the beam optics, taking into account more realistic plasma potential will be needed in the future works.

Original languageEnglish
Title of host publicationProceedings of the 17th International Conference on Ion Sources
EditorsEdgar Mahner, Richard Scrivens, Richard Pardo, Jacques Lettry, Bruce Marsh
PublisherAmerican Institute of Physics Inc.
ISBN (Print)9780735417274
DOIs
Publication statusPublished - 2018 Sep 21
Event17th International Conference on Ion Sources 2018 - Geneva, Switzerland
Duration: 2017 Sep 152017 Sep 20

Publication series

NameAIP Conference Proceedings
Volume2011
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other17th International Conference on Ion Sources 2018
CountrySwitzerland
CityGeneva
Period17/9/1517/9/20

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Fujita, S., Yamamoto, T., Yoshida, M., Kashiwagi, M., & Hatayama, A. (2018). The effect of transport and extraction of non-uniform surface produced H- in large multi-aperture negative ion sources. In E. Mahner, R. Scrivens, R. Pardo, J. Lettry, & B. Marsh (Eds.), Proceedings of the 17th International Conference on Ion Sources [050016] (AIP Conference Proceedings; Vol. 2011). American Institute of Physics Inc.. https://doi.org/10.1063/1.5053314