Electrons in the negative-ion-based NBI on JT-60U

被引：0

作者：

Kisaki, M. ^{[1
]}

Hanada, M. ^{[2
]}

Kamada, M. ^{[2
]}

Tanaka, Y. ^{[2
]}

Kobayashi, K. ^{[2
]}

Sasao, M. ^{[1
]}

机构：

[1] Tohoku Univ, Sch Engn, Sendai, Miyagi 9808579, Japan

[2] Japan Atom Energy Agcy, Naka, Ibaraki 3190913, Japan

来源：

NEGATIVE IONS, BEAMS AND SOURCES | 2009年 / 1097卷

关键词：

NBI; Stripped electron; Electron trajectory; Grid power loading; ITER;

D O I：

暂无

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The stripped electron trajectories in a large negative ion accelerator with multiapertures and three acceleration stages, where non-uniform stray magnetic field is horizontally created, are calculated in the JT-60 negative ion source by a 3-D numerical code. The horizontal non-uniform stray field results in a significant power loss of the stripped electrons in the outmost acceleration channel on the grounded grid (GRG). The power loss in the outmost acceleration channel is more than twice higher than that in the central channel due to the weaker stray field although the total power loading on the GRG is by 25% larger than that by assuming a uniform stray field.

引用

页码：344 / +

页数：2

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