Improvement of accelerator of negative ion source on the Large Helical Device

被引：7

作者：

Kisaki, M. ^{[1
]}

Ikeda, K. ^{[1
]}

Osakabe, M. ^{[1
,2
]}

Tsumori, K. ^{[1
,2
]}

Nakano, H. ^{[1
,2
]}

Geng, S. ^{[2
]}

Nagaoka, K. ^{[1
,2
]}

Kaneko, O. ^{[1
,2
]}

Takeiri, Y. ^{[1
,2
]}

机构：

[1] Natl Inst Fus Sci, 322-6 Oroshi, Toki, Gifu 5095292, Japan

[2] Grad Univ Adv Studies, SOKENDAI, 322-6 Oroshi, Toki, Gifu 5095292, Japan

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2016年 / 87卷 / 02期

关键词：

NEUTRAL BEAM INJECTORS;

D O I：

10.1063/1.4936249

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

To improve the performance of negative-ion based neutral beam injection on the Large Helical Device, the accelerator was modified on the basis of numerical investigations. A field limiting ring was installed on the upper side of a grounded grid (GG) support and a multi-slot GG was adopted instead of a multi-aperture GG. As a result, the voltage holding capability is improved and the heat load on the GG decreases by 40%. In addition, the arc efficiency is improved significantly only by replacing the GG. (C) 2015 AIP Publishing LLC.

引用

页数：3

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