Development of a large volume negative-ion source for ITER neutral beam injector

被引：18

作者：

Watanabe, K ^{[1
]}

Amemiya, T ^{[1
]}

Hanada, M ^{[1
]}

Iga, T ^{[1
]}

Imai, T ^{[1
]}

Inoue, T ^{[1
]}

Kashiwagi, M ^{[1
]}

Kuriyama, M ^{[1
]}

Morishita, T ^{[1
]}

Okumura, Y ^{[1
]}

Takayanagi, T ^{[1
]}

Yamamoto, T ^{[1
]}

机构：

[1] Japan Atom Energy Res Inst, Naka, Ibaraki 3110193, Japan

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2002年 / 73卷 / 02期

关键词：

D O I：

10.1063/1.1431422

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Development of the negative-ion sources has been conducted to realize a high power neutral beam injector for International Thermonuclear Experimental Reactor (ITER). A high negative-ion current density of 31 mA/cm(2) (H-) at a very low pressure of 0.1 Pa has been produced in a cesium seeded multicusp plasma generator which has the same concept of the ITER source. For a vacuum insulated accelerator, a voltage holding experiment of long distance vacuum gaps up to similar to1.8 m has been performed. It was clarified that the transition region of product pressure distance (pd) from the vacuum breakdown to the gas discharge is about 0.2 Pa m which is high enough from the operating region of the ITER source. A prototype vacuum insulated accelerator was fabricated based on the experiment and tested. A high-energy H- beam acceleration up to 970 keV, 37 mA, and 1 s has been successfully demonstrated. (C) 2002 American Institute of Physics.

引用

页码：1090 / 1092

页数：3

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