Stability analysis of Alfvén eigenmodes in China Fusion Engineering Test Reactor fully non-inductive and hybrid mode scenarios

Wenjun YANG (杨文军); Guoqiang LI (李国强); Xueyu GONG (龚学余); Xiang GAO (高翔); Xiaoe LI (李小娥)

doi:10.1088/2058-6272/abecd7

Plasma Science and Technology > 2021 > 23(4): 45103-045103. > DOI: 10.1088/2058-6272/abecd7

Wenjun YANG (杨文军), Guoqiang LI (李国强), Xueyu GONG (龚学余), Xiang GAO (高翔), Xiaoe LI (李小娥). Stability analysis of Alfvén eigenmodes in China Fusion Engineering Test Reactor fully non-inductive and hybrid mode scenarios[J]. Plasma Science and Technology, 2021, 23(4): 45103-045103. DOI: 10.1088/2058-6272/abecd7

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Stability analysis of Alfvén eigenmodes in China Fusion Engineering Test Reactor fully non-inductive and hybrid mode scenarios

¹ University of South China, Hengyang 421001, People's Republic of China
² Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China

Funds: This work was supported by National Natural Science Foundation of China (Nos. 11947056 and 12005100), the Natural Science Foundation of Hunan Province (No. 2020JJ5468), the Opening Project of Cooperative Innovation Center for Nuclear Fuel Cycle Technology and Equipment, University of South China (No. 2019KFY15), the Hunan Nuclear Fusion International Science and Technology Innovation Cooperation Base (No. 2018WK4009), and the Key Scientific Research Program of Education Department of Hunan Province (No. 20A417).

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Received Date: November 30, 2020
Revised Date: March 04, 2021
Accepted Date: March 07, 2021

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Abstract

Abstract

In this paper, NOVA/NOVA-K codes are used to investigate the stability of Alfvén eigenmodes (AEs) in the China Fusion Engineering Test Reactor (CFETR). Firstly, the stability of AEs excited by energetic alpha particles is investigated. For the fully non-inductive scenario, it is found that all AEs are stable, and the least stable toroidal mode number is $n=8.$ However, for the hybrid mode scenario, it is found that many AEs are unstable, and the least stable toroidal mode numbers are $n=7,\,8.$ Secondly, the effect of energetic alpha-particle parameters and beam ions on AE stability is also presented. The threshold of the least stable AE is about ${\beta }_{{\rm{crit}},{\rm{\alpha }}}=1.12 \%,$ less than the value of alpha-particle beta ( ${\beta }_{{\rm{\alpha }}}=1.34 \%$ ). The result demonstrates that the AEs excited by alpha particles are weakly unstable. The effect of the beam ions on AE stability is found to be very weak in CFETR.
- energetic particle,
- Alfvén eigenmode,
- NOVA/NOVA-K,
- CFETR

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References

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Stability analysis of Alfvén eigenmodes in China Fusion Engineering Test Reactor fully non-inductive and hybrid mode scenarios