Capability Assessment of the Equilibrium Field System in KTX

LUO Bing (罗兵); LUO Zhengping (罗正平); XIAO Bingjia (肖炳甲); YOU Wei (尤玮); TAN Mingsheng (谭名昇); GUO Yong (郭勇); BAI Wei (白伟); MAO Wenzhe (毛文哲); LI Hong (李弘); LIU Adi (刘阿娣); LAN Tao (兰涛); XIE Jinlin (谢锦林); LIU Wandong (刘万东)

doi:10.1088/1009-0630/18/1/16

Plasma Science and Technology > 2016 > 18(1): 90-96. > DOI: 10.1088/1009-0630/18/1/16

LUO Bing (罗兵), LUO Zhengping (罗正平), XIAO Bingjia (肖炳甲), YOU Wei (尤玮), TAN Mingsheng (谭名昇), GUO Yong (郭勇), BAI Wei (白伟), MAO Wenzhe (毛文哲), LI Hong (李弘), LIU Adi (刘阿娣), LAN Tao (兰涛), XIE Jinlin (谢锦林), LIU Wandong (刘万东). Capability Assessment of the Equilibrium Field System in KTX[J]. Plasma Science and Technology, 2016, 18(1): 90-96. DOI: 10.1088/1009-0630/18/1/16

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Capability Assessment of the Equilibrium Field System in KTX

1CAS Key Laboratory of Geospace Environment, Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China 2Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China 3Collaborative Innovation Centre for Advanced Fusion Energy & Plasma Science, University of Science and Technology of China, Hefei 230026, China

Funds: supported by the Ministry of Science and Technology of China (No. 2011GB106000)

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Received Date: August 30, 2015

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Abstract

Abstract

Radial equilibrium of the KTX plasma column is maintained by the vertical field which is produced by the equilibrium field coils. The equilibrium is also affected by the eddy current, which is generated by the coupling of copper shell, plasma and poloidal field coils. An equivalent circuit model is developed to analyze the dynamic performance of equilibrium field coils, without auxiliary power input to equilibrium field coils and passive conductors. Considering the coupling of poloidal field coils, copper shell and plasma, the evolution of spatial distribution of the eddy current density on the copper shell is estimated by finite element to analyze the effect of shell to balance. The simulation results show that the copper shell and equilibrium field coils can provide enough vertical field to balance 1 MA plasma current in phase 1 of a KTX discharge. Auxiliary power supply on the EQ coils is necessary to control the horizontal displacement of KTX due to the finite resistance e?ect of the shell.
- KTX,
- plasma equilibrium,
- circuit model,
- eddy current

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References (1)

References

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