Hybrid simulations of fishbone instabilities and Alfvén eigenmodes in DIII-D tokamak

Ren, Zhen-Zhen; Fu, G. Y.; Van Zeeland, M. A.; Wang, Feng; Wang, Zheng-Xiong; Nazikian, R.; Turco, F.; Petty, C. C.

doi:10.1063/1.5064647

Title: Hybrid simulations of fishbone instabilities and Alfvén eigenmodes in DIII-D tokamak

Journal Article · Thu Dec 13 00:00:00 EST 2018 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.5064647· OSTI ID:1490156

^[1];

^[2]; Van Zeeland, M. A. ^[3]; Wang, Feng ^[1];

^[1]; Nazikian, R. ^[4]; Turco, F. ^[5]; Petty, C. C. ^[3]

Dalian Univ. of Technology (China). Key Lab. of Materials Modification by Laser, Ion and Electron Beams. School of Physics
Zhejiang Univ., Hangzhou (China). Inst. for Fusion Theory and Simulation. Dept. of Physics
General Atomics, San Diego, CA (United States)
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Columbia Univ., New York, NY (United States)

In DIII-D hybrid discharges, the intense Alfvén eigenmode (AE) activity driven by Neutral Beam Injection (NBI) that is typically observed can be suppressed and replaced by fishbone modes when Electron Cyclotron Current Drive (ECCD) is centrally applied. Simulations have been carried out with the kinetic/magnetohydrodynamic (MHD) hybrid code M3D-K based on DIII-D discharges #161401 and #161403 without and with ECCD, respectively. In both cases unstable modes are found – the mode frequency and mode structure indicate the instability excited in #161403 is of fishbone type, while that in #161401 is identified as the beta-induced Alfvén eigenmode (BAE)-like mode. Moreover, we find that the calculated mode frequencies of these two shots are consistent with experimental observations.

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Research Organization:: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States); General Atomics, San Diego, CA (United States); Dalian Univ. of Technology (China); Zhejiang Univ., Hangzhou (China)

Sponsoring Organization:: USDOE Office of Science (SC), Fusion Energy Sciences (FES); National Key Research and Development Program of China; National Natural Science Foundation of China (NSFC); Fundamental Research Funds for the Central Universities (China); Dalian Youth Science and Technology Project Support Program (China)

Grant/Contract Number:: FC02-04ER54698; 2017YFE0301900; 11675083; DUT18ZD101; 2015R01

OSTI ID:: 1490156

Alternate ID(s):: OSTI ID: 1462438

Journal Information:: Physics of Plasmas, Vol. 25, Issue 12; ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 17 works

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Verification of an energetic-electron-driven β -induced Alfvén eigenmode in the HL-2A tokamak Chen, Yang; Zhang, Wenlu; Cheng, Junyi Physics of Plasmas, Vol. 26, Issue 10 https://doi.org/10.1063/1.5115811	journal	October 2019
Stability of Alfvén eigenmodes in the China Fusion Engineering Test Reactor Ren, Zhen-Zhen; Chen, Yang; Fu, G. Y. Nuclear Fusion, Vol. 60, Issue 1 https://doi.org/10.1088/1741-4326/ab4871	journal	October 2019

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Title: Hybrid simulations of fishbone instabilities and Alfvén eigenmodes in DIII-D tokamak

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