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

Research output: Contribution to journalArticlepeer-review

6 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


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

ASJC Scopus subject areas

  • Condensed Matter Physics


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