Study of H- production in DC H- source of medical cyclotron

Haruhiko Etoh, Moriaki Onai, Yasushi Aoki, Hitoshi Mitsubori, Yoshihiko Arakawa, Junji Sakuraba, Takanori Kato, Toshinori Mitsumoto, Satoru Yajima, Takanori Shibata, Akiyoshi Hatayama, Yoshikazu Okumura

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4 Citations (Scopus)


A filament driven multi-cusp negative hydrogen ion source has been developed for proton cyclotrons. In order to increase the H- beam current, the dependences of H- beam current on various design/operating parameters has been studied experimentally and numerically. In this paper, the effects of arc-discharge voltage and current on H- production via the volume production process are investigated by three-dimensional kinetic modeling of electrons in the source plasma and zero-dimensional rate equations. This numerical analysis reproduces the experimental results of H- beam current dependence on the arc-discharge condition, and also gives reasonable explanations for their characteristics.

Original languageEnglish
Article number2406063
JournalPlasma and Fusion Research
Issue number1
Publication statusPublished - 2016 Jan 1


  • EEDF
  • KEIO-MARC code
  • Medical cyclotron
  • Negative hydrogen ion source

ASJC Scopus subject areas

  • Condensed Matter Physics

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    Etoh, H., Onai, M., Aoki, Y., Mitsubori, H., Arakawa, Y., Sakuraba, J., Kato, T., Mitsumoto, T., Yajima, S., Shibata, T., Hatayama, A., & Okumura, Y. (2016). Study of H- production in DC H- source of medical cyclotron. Plasma and Fusion Research, 11(1), [2406063].