Progress in the Development of an H- Ion Source for Cyclotrons

被引：0

作者：

Etoh, H. ^{[1
]}

Aoki, Y. ^{[1
]}

Mitsubori, H. ^{[1
]}

Arakawa, Y. ^{[1
]}

Kato, T. ^{[1
]}

Sakuraba, J. ^{[1
]}

Mitsumoto, T. ^{[1
]}

Yajima, S. ^{[1
]}

Okumura, Y. ^{[2
]}

机构：

[1] Sumitomo Heavy Ind Ltd, Tokyo, Japan

[2] Japan Atom Energy Agcy, Fus Res & Dev Directorate, Aomori, Japan

来源：

FOURTH INTERNATIONAL SYMPOSIUM ON NEGATIVE IONS, BEAMS AND SOURCES (NIBS 2014) | 2015年 / 1655卷

关键词：

D O I：

10.1063/1.4916441

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A multi-cusp DC H- ion source has been developed for cyclotrons in medical use. Beam optics of the ET ion beam is studied using a 21) beam trajectory code. The simulation results are compared with the experimental results obtained in the Mark I source, which has produced up to 16 mA H- ion beams. The optimum extraction voltages show good agreement between the calculation and the experimental results. A new ion source, Mark II source, is designed to achieve the next goal of producing an H- beam of 20 mA. The magnetic field configurations and the plasma electrode design are optimized for Cs-seeded operation. Primary electron trajectory simulation shows that primary electrons are confined well and the magnetic litter prevents the primary electrons from entering into the extraction region.

引用

页数：5

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