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Empirical Scaling Laws of Neutral Beam Injection Power in HL-2A Tokamak |
| CAO Jian-Yong**, WEI Hui-Ling, LIU He, YANG Xian-Fu, ZOU Gui-Qing, YU Li-Ming, LI Qing, LUO Cui-Wen, PAN Yu-Dong, JIANG Shao-Feng, LEI Guang-Jiu, LI Bo, RAO Jun, DUAN Xu-Ru |
Southwestern Institute of Physics, Chengdu 610041
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| Cite this article: |
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CAO Jian-Yong, WEI Hui-Ling, LIU He et al 2015 Chin. Phys. Lett. 32 052902 |
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Abstract We present an experimental method to obtain neutral beam injection (NBI) power scaling laws with operating parameters of the NBI system on HL-2A, including the beam divergence angle, the beam power transmission efficiency, the neutralization efficiency and so on. With the empirical scaling laws, the estimating power can be obtained in every shot of experiment on time, therefore the important parameters such as the energy confinement time can be obtained precisely. The simulation results by the tokamak simulation code (TSC) show that the evolution of the plasma parameters is in good agreement with the experimental results by using the NBI power from the empirical scaling law.
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Received: 06 September 2014
Published: 01 June 2015
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| PACS: |
29.27.Ac
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(Beam injection and extraction)
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52.50.Gj
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(Plasma heating by particle beams)
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52.59.Bi
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(Grid- and ion-diode-accelerated beams)
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52.70.Nc
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(Particle measurements)
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