Analysis of shine-through of EAST neutral beam

Hu Chundong; Zhang Weitang; Xu Yongjian; Liu Sheng; Yu Ling

doi:10.11884/HPLPB201527.126001

Volume 27 Issue 12

Jan. 2016

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Article Navigation > High Power Laser and Particle Beams > 2015 > 27(12): 126001

Wang Yu, Li Hongtao, Wang Wendou, et al. Simulation study on performances of rod-pinch diode on 1.2 MV X-ray generator Scorpio[J]. High Power Laser and Particle Beams, 2015, 27: 095005. doi: 10.11884/HPLPB201527.095005

Citation:

Hu Chundong, Zhang Weitang, Xu Yongjian, et al. Analysis of shine-through of EAST neutral beam[J]. High Power Laser and Particle Beams, 2015, 27: 126001. doi: 10.11884/HPLPB201527.126001

Citation:

Hu Chundong, Zhang Weitang, Xu Yongjian, et al. Analysis of shine-through of EAST neutral beam[J]. High Power Laser and Particle Beams, 2015, 27: 126001. doi: 10.11884/HPLPB201527.126001

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Analysis of shine-through of EAST neutral beam

doi: 10.11884/HPLPB201527.126001

1.
Institute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031,China;
2.
Department of Electronic Information and Electrical Engineering,Hefei University,Hefei 230601,China

Received Date: 2015-08-05
Rev Recd Date: 2015-10-14
Publish Date: 2015-11-26

Abstract

Abstract

High-energy neutral beam injection(NBI) is one of the four Tokamak auxiliary heating methods(The four methods are the neutral beam injection, lower hybrid, ion cyclotron waves paragraph, and the section electron cyclotron waves). Due to the highest heating efficiency, and the clearly physical mechanism, NBI is regarded as the most effective heating method by international fusion community. In order to explore shine through of EAST（Experimental Advanced Superconducting Tokamak）-NBI, specific hardware circuit block diagram and experimental scheme are designed based on the theoretical analysis of the principle of shine through, and the correctness of the theoretical deduction is verified by experiments. The method of quantitative calibration of the thermocouple in the center point of the ion source beam spot is the standard for the calculation of the shine-through. The value of shine-through is calculated by the ratio of the armor tile thermocouple unit energy of temperature rise to that of calibrated one. The experimental results show that, in a certain range, the shine through increases linearly with the increase of the injection beam energy, and decreases exponentially with the increase of the plasma density.
- shine-through,
- beam energy,
- beam spot,
- thermocouple calibration

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