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

doi:10.1585/pfr.11.2406063

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

Department of Applied Physics and Physico-Informatics

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

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 language	English
Article number	2406063
Journal	Plasma and Fusion Research
Volume	11
Issue number	1
DOIs	https://doi.org/10.1585/pfr.11.2406063
Publication status	Published - 2016

Keywords

EEDF
KEIO-MARC code
Medical cyclotron
Negative hydrogen ion source

ASJC Scopus subject areas

Condensed Matter Physics

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Study of H^- production in DC H^- source of medical cyclotron. / Etoh, Haruhiko; Onai, Moriaki; Aoki, Yasushi; Mitsubori, Hitoshi; Arakawa, Yoshihiko; Sakuraba, Junji; Kato, Takanori; Mitsumoto, Toshinori; Yajima, Satoru; Shibata, Takanori; Hatayama, Akiyoshi; Okumura, Yoshikazu.

In: Plasma and Fusion Research, Vol. 11, No. 1, 2406063, 2016.

Research output: Contribution to journal › Article › peer-review

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abstract = "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.",

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AU - Onai, Moriaki

AU - Aoki, Yasushi

AU - Mitsubori, Hitoshi

AU - Arakawa, Yoshihiko

AU - Sakuraba, Junji

AU - Kato, Takanori

AU - Mitsumoto, Toshinori

AU - Yajima, Satoru

AU - Shibata, Takanori

AU - Hatayama, Akiyoshi

AU - Okumura, Yoshikazu

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AB - 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.

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