High power neutral beam injection in LHD

被引：0

作者：

Tsumori, K. ^{[1
]}

Takeiri, Y. ^{[1
]}

Nagaoka, K. ^{[1
]}

Ikeda, K. ^{[1
]}

Osakabe, M. ^{[1
]}

Oka, Y. ^{[1
]}

Kaneko, O. ^{[1
]}

Shibuya, M. ^{[1
]}

Kondo, T. ^{[1
]}

Sato, M. ^{[1
]}

Asano, E. ^{[1
]}

机构：

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

来源：

PLASMA SCIENCE & TECHNOLOGY | 2006年 / 8卷 / 01期

关键词：

NBI; negative ion source;

D O I：

暂无

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The results on high power injection with the neutral beam injection (NBI) system for the Large Helical Device (LHD) are reported. The system consists of three beam-lines with two hydrogen negative ion (H-ion) sources installed in each beam-line. In order to improve the injection power, a new beam accelerator with a multi-slot grounded grid ( MSGG) has been developed and applied to one beam-line. Using the accelerator, a maximum power of 5.7 MW was achieved in 2003 and 2004, and the maximum energy of 189 keV was reached. The power and energy exceeded the design values of the individual beam-line for LHD. The other beam-lines also increased their injection power up to about 4 MW, and the total injection power of 13.1 MW was achieved with three beam-lines in 2003. Although the accelerator had an advantage in high power beam injection, extracted beams expand in the short side direction of the ground-grid slot. The disadvantage has been resolved by modifying the aperture shapes of the steering grid.

引用

页码：24 / 27

页数：4

共 8 条

[1] INTENSE, MIXED-ENERGY HYDROGEN BEAMS FOR CTR INJECTION [J].

BERKNER, KH ;

PYLE, RV ;

STEARNS, JW .

NUCLEAR FUSION, 1975, 15 (02) :249-254

[2] Engineering prospects of negative-ion-based neutral beam injection system from high power operation for the large helical device [J].

Kaneko, O ;

Takeiri, Y ;

Tsumori, K ;

Oka, Y ;

Osakabe, M ;

Ikeda, K ;

Nagaoka, K ;

Kawamoto, T ;

Asano, E ;

Sato, M .

NUCLEAR FUSION, 2003, 43 (08) :692-699

[3] Initial physics achievements of large helical device experiments [J].

Motojima, O ;

Yamada, H ;

Komori, A ;

Ohyabu, N ;

Kawahata, K ;

Kaneko, O ;

Masuzaki, S ;

Ejiri, A ;

Emoto, M ;

Funaba, H ;

Goto, M ;

Ida, K ;

Idei, H ;

Inagaki, S ;

Inoue, N ;

Kado, S ;

Kubo, S ;

Kumazawa, R ;

Minami, T ;

Miyazawa, J ;

Morisaki, T ;

Morita, S ;

Murakami, S ;

Muto, S ;

Mutoh, T ;

Nagayama, Y ;

Nakamura, Y ;

Nakanishi, H ;

Narihara, K ;

Nishimura, K ;

Noda, N ;

Kobuchi, T ;

Ohdachi, S ;

Oka, Y ;

Osakabe, M ;

Ozaki, T ;

Peterson, BJ ;

Sagara, A ;

Sakakibara, S ;

Sakamoto, R ;

Sasao, H ;

Sasao, M ;

Sato, K ;

Sato, M ;

Seki, T ;

Shimozuma, T ;

Shoji, M ;

Suzuki, H ;

Takeiri, Y ;

Tanaka, K .

PHYSICS OF PLASMAS, 1999, 6 (05) :1843-1850

[4] Negative hydrogen ion source development for large helical device neutral beam injector (invited) [J].

Takeiri, Y ;

Kaneko, O ;

Tsumori, K ;

Oka, Y ;

Osakabe, M ;

Ikeda, K ;

Asano, E ;

Kawamoto, T ;

Akiyama, R .

REVIEW OF SCIENTIFIC INSTRUMENTS, 2000, 71 (02) :1225-1230

[5] High-current negative-ion beam acceleration with a large negative-ion source for large helical device-neutral beam injection system [J].

Takeiri, Y ;

Osakabe, M ;

Tsumori, K ;

Oka, Y ;

Kaneko, O ;

Asano, E ;

Kawamoto, T ;

Akiyama, R .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1998, 69 (02) :977-979

[6]

Tsumori K, 2005, AIP CONF PROC, V763, P35, DOI 10.1063/1.1908281

[7] High power beam injection using an improved negative on source for the large helical device [J].

Tsumori, K ;

Nagaoka, K ;

Osakabe, M ;

Takeiri, Y ;

Ikeda, K ;

Kaneko, O ;

Oka, Y ;

Kawamoto, T ;

Asano, E ;

Sato, M ;

Kondo, T ;

Asano, S ;

Suzuki, Y ;

Okuyama, T ;

Ichihashi, K .

REVIEW OF SCIENTIFIC INSTRUMENTS, 2004, 75 (05) :1847-1850

[8]

TSUMORI K, 2004, P 20 IAEA C VIL

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