High-current negative-ion beam acceleration with a large negative-ion source for large helical device-neutral beam injection system

1998 ◽  
Vol 69 (2) ◽  
pp. 977-979 ◽  
Author(s):  
Y. Takeiri ◽  
M. Osakabe ◽  
K. Tsumori ◽  
Y. Oka ◽  
O. Kaneko ◽  
...  
Keyword(s):  
Ion Beam ◽  
Ion Source ◽  
Neutral Beam Injection ◽  
Negative Ion ◽  
Neutral Beam ◽  
Injection System ◽  
High Current ◽  
Beam Injection

Beam deflection by plasma grid filter current in the negative-ion source for JT-60U neutral beam injection system

2006 ◽  
Vol 77 (3) ◽  
pp. 03A529 ◽  
Author(s):  
N. Umeda ◽  
Y. Ikeda ◽  
M. Hanada ◽  
T. Inoue ◽  
M. Kawai ◽  
...  
Keyword(s):  
Ion Source ◽  
Neutral Beam Injection ◽  
Negative Ion ◽  
Neutral Beam ◽  
Beam Deflection ◽  
Injection System ◽  
Beam Injection

Direct Energy Recovery from Unneutralized Ion Beams in a Negative-Ion-Beam-Based Neutral Beam Injection System

1990 ◽  
Vol 17 (4) ◽  
pp. 527-539 ◽  
Author(s):  
Kiyoshi Yoshikawa ◽  
Yoshihiko Nimura ◽  
Yasushi Yamamoto ◽  
Hiroshi Watanabe
Keyword(s):  
Energy Recovery ◽  
Ion Beam ◽  
Ion Beams ◽  
Neutral Beam Injection ◽  
Negative Ion ◽  
Neutral Beam ◽  
Injection System ◽  
Beam Injection ◽  
Direct Energy

Optimization of Cs deposition in the 1/3 scale hydrogen negative ion source for the large helical device-neutral beam injection system

2000 ◽  
Vol 71 (3) ◽  
pp. 1379-1384 ◽  
Author(s):  
Y. Oka ◽  
Y. Takeiri ◽  
Yu. I. Belchenko ◽  
M. Hamabe ◽  
O. Kaneko ◽  
...  
Keyword(s):  
Ion Source ◽  
Neutral Beam Injection ◽  
Negative Ion ◽  
Neutral Beam ◽  
Injection System ◽  
Beam Injection

Thermo-mechanical design of the neutralizer for CRAFT negative ion-based neutral beam injection system

2021 ◽  
Vol 169 ◽  
pp. 112482
Author(s):  
Jianglong Wei ◽  
Zhaoyuan Zhang ◽  
Wei Yi ◽  
Ling Tao ◽  
Lizhen Liang ◽  
...  
Keyword(s):  
Mechanical Design ◽  
Neutral Beam Injection ◽  
Negative Ion ◽  
Neutral Beam ◽  
Injection System ◽  
Beam Injection

Beam optics study of a negative ion source for neutral beam injection application at ASIPP

2017 ◽  
Vol 117 ◽  
pp. 93-99 ◽  
Author(s):  
Jiang-Long Wei ◽  
Li-Zhen Liang ◽  
Cai-Chao Jiang ◽  
Ya-Hong Xie ◽  
Chun-Dong Hu ◽  
...  
Keyword(s):  
Ion Source ◽  
Neutral Beam Injection ◽  
Negative Ion ◽  
Neutral Beam ◽  
Beam Optics ◽  
Beam Injection

Analysis of the Effect of Beam Divergence Angle on Back-Streaming Electron Region in Ion Source for EAST-Neutral Beam Injection

2018 ◽  
Vol 4 (3) ◽  
Author(s):  
Hu Chundong ◽  
Wu Mingshan ◽  
Xie Yahong ◽  
Wei Jianglong ◽  
Yu Ling
Keyword(s):  
Ion Beam ◽  
Ion Source ◽  
Neutral Beam Injection ◽  
Beam Divergence ◽  
Neutral Beam ◽  
Divergence Angle ◽  
Beam Extraction ◽  
Beam Injection ◽  
Back Plate ◽  
Beam Divergence Angle

During the process of beam extraction in positive ion source under high voltage region, a large number of electrons are produced in the gaps of grids. After back-streaming acceleration, these electrons go back to arc chamber or impinge grids and then heat back plate or grids, which are harmful for the safety of ion source. Under the situation of poor beam extraction optics, a large part of the primary beam ions bombard the surface of suppressor grid (SG). And this process produces a large number of electrons. Due to the huge extracted voltage, the secondary electron emission coefficient of the SG surface is also high. As a result, the grids' current grows. According to the measurement of the current of SG and the calculation of the perveance of the corresponding shoot, the effect of ion beam divergence angle on back-streaming electrons can be analyzed. When the beam divergence angle increases, the number of back-streaming electrons increases rapidly, and grids' current changes significantly, especially the current of gradient grid and SG. The results can guide the parameters operating on the ion source for Experimental Advanced Superconducting Tokamak-neutral beam injection (EAST-NBI) and find the reasonable operation interval of perveance and to ensure the safety and stable running of the ion source, which has great significance on the development of long pulse, high power ion source.

New ion source for KSTAR neutral beam injection system

2012 ◽  
Vol 83 (2) ◽  
pp. 02B112 ◽  
Author(s):  
Tae-Seong Kim ◽  
Seung Ho Jeong ◽  
Sang-Ryul In
Keyword(s):  
Ion Source ◽  
Neutral Beam Injection ◽  
Neutral Beam ◽  
Injection System ◽  
Beam Injection

Operation of the negative ion-based neutral beam injection system during Large Helical Device experimental campaigns

2001 ◽  
Vol 56-57 ◽  
pp. 533-537 ◽  
Author(s):  
Y. Oka ◽  
O. Kaneko ◽  
Y. Takeiri ◽  
K. Tsumori ◽  
M. Osakabe ◽  
...  
Keyword(s):  
Neutral Beam Injection ◽  
Negative Ion ◽  
Neutral Beam ◽  
Injection System ◽  
Beam Injection

Operating characteristics of a new ion source for KSTAR neutral beam injection system

2014 ◽  
Vol 85 (2) ◽  
pp. 02B311 ◽  
Author(s):  
Tae-Seong Kim ◽  
Seung Ho Jeong ◽  
Doo-Hee Chang ◽  
Kwang Won Lee ◽  
Sang-Ryul In
Keyword(s):  
Ion Source ◽  
Neutral Beam Injection ◽  
Neutral Beam ◽  
Injection System ◽  
Operating Characteristics ◽  
Beam Injection
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