Thermo-mechanical design of the ITER Neutral Beam Injector grids for Radio Frequency Ion Source and SINGAP Accelerator

2007 ◽  
Author(s):  
P. Agostinetti ◽  
S. Dal Bello ◽  
M. Dalla Palma ◽  
D. Marcuzzi ◽  
P. Zaccaria ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Mechanical Design ◽  
Ion Source ◽  
Neutral Beam ◽  
Neutral Beam Injector

A Band Rejection Filter of High Current Radio Frequency Ion Source for Neutral Beam Injector

2021 ◽  
pp. 1-6
Author(s):  
Wei Liu ◽  
Qinglong Cui ◽  
Sheng Liu ◽  
Lizhen Liang ◽  
Yuanzhe Zhao ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Ion Source ◽  
Neutral Beam ◽  
High Current ◽  
Neutral Beam Injector ◽  
Rejection Filter

Development progresses of radio frequency ion source for neutral beam injector in fusion devices

2014 ◽  
Vol 85 (2) ◽  
pp. 02B303 ◽  
Author(s):  
D. H. Chang ◽  
S. H. Jeong ◽  
T. S. Kim ◽  
M. Park ◽  
K. W. Lee ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Ion Source ◽  
Neutral Beam ◽  
Neutral Beam Injector

Research and development progress of radio frequency ion source for neutral beam injector at ASIPP

2019 ◽  
Vol 90 (11) ◽  
pp. 113319 ◽  
Author(s):  
Yahong Xie ◽  
Chundong Hu ◽  
Jianglong Wei ◽  
Yongjian Xu ◽  
Caichao Jiang ◽  
...  
Keyword(s):  
Research And Development ◽  
Radio Frequency ◽  
Ion Source ◽  
Neutral Beam ◽  
Neutral Beam Injector

scholarly journals Study of RF Stray Currents in ITER Neutral Beam Test Facilities

2021 ◽  
Vol 11 (23) ◽  
pp. 11126
Author(s):  
Riccardo Casagrande ◽  
Alberto Maistrello ◽  
Marco De Nardi ◽  
Mattia Dan ◽  
Mauro Recchia
Keyword(s):  
Radio Frequency ◽  
Ion Source ◽  
Full Scale ◽  
Power Supplies ◽  
Neutral Beam ◽  
Rf Power ◽  
Beam Source ◽  
Rf System ◽  
Neutral Beam Injector ◽  
Coaxial Lines

The operation of SPIDER (Source for the Production of Ions of Deuterium Extracted from Radio-frequency plasma), full-scale prototype of ITER NBI (Neutral Beam Injector) radio-frequency ion source, pointed out deleterious effects caused by stray Radio-Frequency (RF) currents flowing in the electrical equipment not included in the RF power system. MITICA (Megavolt ITER Injector and Concept Advancement), the full-scale prototype of ITER NBI, is characterized by a similar design in terms of layout of the power supplies and connections to the beam source; thus, it is expected to be subject to the RF stray currents problem. SPIDER RF system is composed of four RF generators, four coaxial lines and four RF loads. Each RF generator is rated for operation at 200 kW in the frequency range 0.9 ÷ 1.1 MHz. The power is delivered to the four loads via as many RF coaxial lines, housed inside a multiconductor transmission line. Each load consists of a capacitive matching network and two plasma drivers in series. Due to the presence of stray connections at the generator and beam-source side (e.g., parasitic capacitances), unwanted RF currents can flow through alternative paths and negatively affect the components not intended for transmission of RF power, the output stages of power supplies and several diagnostics installed in the High-Voltage Deck (HVD) and at the beam source. This paper presents the development of a circuital model used to estimate the RF stray currents in SPIDER electrical system; the understanding of this phenomenon and the development of a model with predictive capabilities is fundamental for the assessment of the performance of both SPIDER and MITICA and, in general, of alternative RF system layouts with respect to the stray currents issue.

Upgrade and experimental results of radio frequency ion source for neutral beam injector

2017 ◽  
Vol 114 ◽  
pp. 72-75 ◽  
Author(s):  
Yahong Xie ◽  
Chundong Hu ◽  
Caichao Jiang ◽  
Yuming Gu ◽  
Yongjian Xu ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Ion Source ◽  
Experimental Results ◽  
Neutral Beam ◽  
Neutral Beam Injector

First plasma of megawatt high current ion source for neutral beam injector of the experimental advanced superconducting tokamak on the test bed

2011 ◽  
Vol 82 (2) ◽  
pp. 023303 ◽  
Author(s):  
Chundong Hu ◽  
Yahong Xie ◽  
Sheng Liu ◽  
Yuanlai Xie ◽  
Caichao Jiang ◽  
...  
Keyword(s):  
Ion Source ◽  
Neutral Beam ◽  
High Current ◽  
Test Bed ◽  
Neutral Beam Injector ◽  
Superconducting Tokamak

Steady-state operation of a large-area high-power RF ion source for the neutral beam injector

2014 ◽  
Vol 65 (8) ◽  
pp. 1273-1276 ◽  
Author(s):  
Doo-Hee Chang ◽  
Min Park ◽  
Seung Ho Jeong ◽  
Tae-Seong Kim ◽  
Kwang Won Lee ◽  
...  
Keyword(s):  
Steady State ◽  
High Power ◽  
Ion Source ◽  
Neutral Beam ◽  
Large Area ◽  
Neutral Beam Injector ◽  
Steady State Operation ◽  
Rf Ion Source

The alternative design concept for the ion source power supply of the ITER neutral beam injector

2008 ◽  
Vol 83 (1) ◽  
pp. 21-29 ◽  
Author(s):  
E. Gaio ◽  
V. Toigo ◽  
A. De Lorenzi ◽  
R. Piovan ◽  
L. Zanotto
Keyword(s):  
Power Supply ◽  
Ion Source ◽  
Design Concept ◽  
Neutral Beam ◽  
Neutral Beam Injector ◽  
Source Power ◽  
Alternative Design
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