High current DC negative ion source for cyclotron

H. Etoh, M. Onai, Y. Aoki, H. Mitsubori, Y. Arakawa, J. Sakuraba, T. Kato, T. Mitsumoto, T. Hiasa, S. Yajima, T. Shibata, Akiyoshi Hatayama, Y. Okumura

研究成果: Article

7 引用 (Scopus)

抜粋

A filament driven multi-cusp negative ion source has been developed for proton cyclotrons in medical applications. In Cs-free operation, continuous H- beam of 10 mA and D- beam of 3.3 mA were obtained stably at an arc-discharge power of 3 kW and 2.4 kW, respectively. In Cs-seeded operation, H- beam current reached 22 mA at a lower arc power of 2.6 kW with less co-extracted electron current. The optimum gas flow rate, which gives the highest H- current, was 15 sccm in the Cs-free operation, while it decreased to 4 sccm in the Cs-seeded operation. The relationship between H- production and the design/operating parameters has been also investigated by a numerical study with KEIO-MARC code, which gives a reasonable explanation to the experimental results of the H- current dependence on the arc power.

元の言語English
記事番号02B135
ジャーナルReview of Scientific Instruments
87
発行部数2
DOI
出版物ステータスPublished - 2016 2 1

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ASJC Scopus subject areas

  • Instrumentation

これを引用

Etoh, H., Onai, M., Aoki, Y., Mitsubori, H., Arakawa, Y., Sakuraba, J., Kato, T., Mitsumoto, T., Hiasa, T., Yajima, S., Shibata, T., Hatayama, A., & Okumura, Y. (2016). High current DC negative ion source for cyclotron. Review of Scientific Instruments, 87(2), [02B135]. https://doi.org/10.1063/1.4934613