Comparative investigation of ELM control based on toroidal modelling of plasma response to RMP fields
Artikel i vetenskaplig tidskrift, 2017

Extensive modelling efforts of the plasma response to the resonant magnetic perturbation fields, utilized for controlling the edge localized mode (ELM), help to identify the edge-peeling response as a key factor, which correlates to the observed ELM mitigation in several tokamak devices, including MAST, ASDEX Upgrade, EAST, and HL-2A. The recently observed edge safety factor window for ELM mitigation in HL-2A experiments is explained in terms of the edge-peeling response. The computed plasma response, based on toroidal single fluid resistive plasma model with different assumption of toroidal flows, is found generally larger in ELM suppressed cases as compared to that of the ELM mitigated cases, in ASDEX Upgrade and DIII-D. The plasma shaping, in particular, the plasma triangularity, contributes to the enhanced plasma response. But the shaping does not appear to be the sole factor-other factors such as the (higher) pedestal pressure and/or current can also lead to increased edge-peeling response.


Yueqiang Liu

Chalmers, Rymd- och geovetenskap, Plasmafysik och fusionsenergi

A. Kirk

Culham Science Centre

L. Li

Donghua University

Y. In

National Fusion Research Institute

R. Nazikian

Princeton University

Y. W. Sun

Chinese Academy of Sciences

W. Suttrop

Max-Planck-Institutet för plasma-fysik

B. Lyons

General Atomics

D. Ryan

Culham Science Centre

S. Wang

Southwestern Institute of Physics China

X. Yang

Dalian University of Technology

L. N. Zhou

Dalian University of Technology

Physics of Plasmas

1070-664X (ISSN) 1089-7674 (eISSN)

Vol. 24 5 056111


Fusion, plasma och rymdfysik



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