Design of snowflake-diverted equilibria of CFETR

Hang LI (李航); Xiang GAO (高翔); Guoqiang LI (李国强); Zhengping LUO (罗正平); Damao YAO (姚达毛); Yong GUO (郭勇)

doi:10.1088/2058-6272/aa9e83

Plasma Science and Technology > 2018 > 20(3): 35102-035102. > DOI: 10.1088/2058-6272/aa9e83

Hang LI (李航), Xiang GAO (高翔), Guoqiang LI (李国强), Zhengping LUO (罗正平), Damao YAO (姚达毛), Yong GUO (郭勇). Design of snowflake-diverted equilibria of CFETR[J]. Plasma Science and Technology, 2018, 20(3): 35102-035102. DOI: 10.1088/2058-6272/aa9e83

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Design of snowflake-diverted equilibria of CFETR

1 Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People’s Republic of China 2 University of Science and Technology of China, Hefei 230029, People’s Republic of China

Funds: This work was supported by the National Magnetic Confinement Fusion Program under grant nos 2014GB106001, 2014GB110003 and 2013GB111000, and by National Natural Science Foundation of China under grant no. 11675221.

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Received Date: October 17, 2017

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Abstract

Abstract

The Chinese Fusion Engineering Test Reactor (CFETR) represents the next generation of full superconducting fusion reactors in China. Recently, CFETR was redesigned with a larger size and will be operated in two phases. To reduce the heat flux on the target plate, a snowflake (SF) divertor configuration is proposed. In this paper we show that by adding two dedicated poloidal field (PF) coils, the SF configuration can be achieved in both phases. The equilibria were calculated by TEQ code for a range of self-inductances l_i3. The coil currents were calculated at some fiducial points in the flattop phase. The results indicate that the PF coil system has the ability to maintain a long flattop phase in 7.5 and 10 MA inductive scenarios for the single null divertor (SND) and SF divertor configurations. The properties of the SF configuration were also analyzed. The connection length and flux expansion of the SF divertor were both increased significantly over the SND.
- CFETR,
- equilibrium,
- PF coil,
- snowflake

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References (18)

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