HIGH PERFORMANCE OF NEUTRAL BEAM INJECTORS FOR EXTENSION OF LHD OPERATIONAL REGIME

被引：73

作者：

Takeiri, Y. ^{[1
]}

Kaneko, O. ^{[1
]}

Tsumori, K. ^{[1
]}

Osakabe, M. ^{[1
]}

Ikeda, K. ^{[1
]}

Nagaoka, K. ^{[1
]}

Nakano, H. ^{[1
]}

Asano, E. ^{[1
]}

Kondo, T. ^{[1
]}

Sato, M. ^{[1
]}

Shibuya, M. ^{[1
]}

Komada, S. ^{[1
]}

机构：

[1] Natl Inst Nat Sci, Natl Inst Fus Sci, Toki, Gifu 5095292, Japan

来源：

FUSION SCIENCE AND TECHNOLOGY | 2010年 / 58卷 / 01期

关键词：

LHD; neutral beam injector; negative ion source; long-pulse plasma; HYDROGEN-ION SOURCE; HIGH-POWER; PLASMA INITIATION; IMPROVEMENT;

D O I：

10.13182/FST10-A10834

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

High-power negative and positive ion-based neutral beam injectors (NBIs) are operated with high reliability in the Large Helical Device (LHD). The total injection power is >20 MW, and such high-power beams are available every 3 min. The high performance of the LHD NBI system has extended the LHD parameter regime to levels equivalent to those obtained in large tokamaks. Three negative NBIs inject a total power of 16 MW with an energy of 180 keV, which is the world's highest power from a negative NBI system (H-), and one positive NBI (H+) injects 7 MW at 40 keV. The injection duration can be extended beyond 1 min with reduced power from the negative and positive NBIs, and long-pulse plasmas are successfully sustained with the NBIs. The structure and performance of the LHD NBI system is reviewed.

引用

页码：482 / 488

页数：7

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