Effects of fast ions produced by ICRF heating on the pressure at EAST

Zhen ZHENG (郑振); Nong XIANG (项农); Cheng YANG (杨程); Yingfeng XU (徐颖峰)

doi:10.1088/2058-6272/ab4ff5

Plasma Science and Technology > 2020 > 22(2): 25101-025101. > DOI: 10.1088/2058-6272/ab4ff5

Zhen ZHENG (郑振), Nong XIANG (项农), Cheng YANG (杨程), Yingfeng XU (徐颖峰). Effects of fast ions produced by ICRF heating on the pressure at EAST[J]. Plasma Science and Technology, 2020, 22(2): 25101-025101. DOI: 10.1088/2058-6272/ab4ff5

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Effects of fast ions produced by ICRF heating on the pressure at EAST

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 230026, People's Republic of China
³ Center for Magnetic Fusion Theory, Chinese Academy of Sciences, Hefei 230031, People's Republic of China

Funds: This work was supported by the National Key R&D Program of China (Nos. 2017YFE0300400 and 2017YFE0300406), and National Natural Science Foundation of China (Nos. 11575239 and 11775265).

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Received Date: July 30, 2019
Revised Date: October 17, 2019
Accepted Date: October 21, 2019

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Abstract

Abstract

Ion cyclotron resonance heating (ICRH), which can produce fast ions, is an important auxiliary heating method at EAST. To analyze the effect of ICRH-induced fast ions on the plasma pressure at EAST, simulations are performed using TRANSP and TORIC codes. It is found that the ICRF-induced fast ion pressure cannot be negligible when the ICRF power is sufficiently high. The magnitude of the total ion pressure can be raised up to 60% of the total pressure as the input power rises above 3 MW. The pressure profile is also significantly modified when the resonant layer is changed. It is shown that by changing the wave frequency and antenna position, the total ion pressure profile can be broadened, which might provide an option for profile control at EAST.
- ICRH,
- equilibrium,
- fast ion,
- pressure,
- minority heating

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References (36)

References

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Effects of fast ions produced by ICRF heating on the pressure at EAST