Analysis of the spatial non-uniformity of negative ion production in surface-produced negative ion sources

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

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

2 Citations (Scopus)

Abstract

In order to improve the uniformity of the negative ion production, the KEIO-MARC code has been applied to the QST's JT60SA negative ion source in three different magnetic configurations (i) MC-PGMF (Multi-Cusp and PG Magnetic Filter), (ii) TNT-MF (TeNT Magnetic Filter) and (iii) MTNT-MF (Modified TeNT Magnetic Filter). From the results, we have confirmed that the electron rotation inside the negative ion source is an essential element in order to obtain a uniform production of the negative ions. By adding extra tent magnets on the longitudinal sides, the electron rotation has been enhanced, and a uniform production of negative ions has been realized.

Original languageEnglish
Title of host publication5th International Symposium on Negative Ions, Beams and Sources, NIBS 2016
EditorsDan Faircloth
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735415492
DOIs
Publication statusPublished - 2017 Aug 9
Event5th International Symposium on Negative Ions, Beams and Sources, NIBS 2016 - Oxford, United Kingdom
Duration: 2016 Sep 122016 Sep 16

Publication series

NameAIP Conference Proceedings
Volume1869
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other5th International Symposium on Negative Ions, Beams and Sources, NIBS 2016
CountryUnited Kingdom
CityOxford
Period16/9/1216/9/16

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Fujita, S., Yamamoto, T., Yoshida, M., Onai, M., Kojima, A., Hatayama, A., & Kashiwagi, M. (2017). Analysis of the spatial non-uniformity of negative ion production in surface-produced negative ion sources. In D. Faircloth (Ed.), 5th International Symposium on Negative Ions, Beams and Sources, NIBS 2016 [030041] (AIP Conference Proceedings; Vol. 1869). American Institute of Physics Inc.. https://doi.org/10.1063/1.4995761