Analysis of H- Extraction in the Linac4 Negative Ion Source by 2.5D Particle Simulation

被引：1
|
作者：
Abe, S. [1 ]
Nishioka, S. [1 ]
Maffei, S. [2 ]
Miyamoto, K. [3 ]
Hatayama, A. [1 ]
Lettry, J. [2 ]
机构：
[1] Kew Univ, Fac Sci & Technol, Kohoku Ku, 3-14-1 Hiyoshi, Yokohama, Kanagawa 2238522, Japan
[2] CERN, CH-1211 Geneva 23, Switzerland
[3] Naruto Univ Educ, 748 Nakajima,Naruto Cho, Naruto, Tokushima 7728502, Japan
来源：
PROCEEDINGS OF THE 17TH INTERNATIONAL CONFERENCE ON ION SOURCES | 2018年 / 2011卷
关键词：
D O I：
10.1063/1.5053375
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The purpose of this study is to investigate the extraction mechanisms of the H- ions in the Linac4 negative ion source by using an improved two-dimensional in real space and three-dimensional in velocity space Particle in Cell (2D3VPIC) model. In this model, the following collision processes of the surface produced H- (H-sp(-)) ions have been introduced and the effects of the collisions on H- extraction have been analyzed: elastic (H-sp(-)-H-2) and charge exchange (1-1;- H). It is shown that the extracted H-sp(-) current increases due to the tlow reversal of the H-sp(-) ions caused by these collisions.
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页数：3
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