Effects of the extraction voltage applied by the puller-electrode on the H- Extraction in the Linac4 negative ion source

S. Abe, S. Nishioka, S. Mattei, A. Hatayama, J. Lettry

研究成果: Conference contribution

3 被引用数 (Scopus)

抄録

In order to understand the H- extraction mechanism and investigate the effect of the extraction voltage applied by the puller-electrode on the H- extraction in the Linac4 negative ion source, we are developing a 2D3V-PIC (two dimensions in the real space and three dimensions in the velocity space, Particle in Cell) model with volume produced H- ions. It is shown that how to take the magnetic filter field direction is important for the 2D modeling to take into account the important 3D effect of electron ExB drift. It is also shown that the meniscus formation is not symmetric due to the electron ExB drift in the extraction region and the divergence of the H- beam is asymmetric. In order to make more quantitative comparison of the extracted H- and electron currents with the experiments and 3D modeling, further improvements, especially the electron loss along the magnetic filter field line will be needed.

本文言語English
ホスト出版物のタイトル5th International Symposium on Negative Ions, Beams and Sources, NIBS 2016
編集者Dan Faircloth
出版社American Institute of Physics Inc.
ISBN(電子版)9780735415492
DOI
出版ステータスPublished - 2017 8月 9
イベント5th International Symposium on Negative Ions, Beams and Sources, NIBS 2016 - Oxford, United Kingdom
継続期間: 2016 9月 122016 9月 16

出版物シリーズ

名前AIP Conference Proceedings
1869
ISSN(印刷版)0094-243X
ISSN(電子版)1551-7616

Other

Other5th International Symposium on Negative Ions, Beams and Sources, NIBS 2016
国/地域United Kingdom
CityOxford
Period16/9/1216/9/16

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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