Author:
LIANG Ruirong,GONG Xianzu,ZHANG Bin,YANG Zhendong,JIA Manni,SUN Youwen,MA Qun,ZHANG Jiayuan,HU Yunchan,QIAN Jinping
Abstract
Abstract
Resonant magnetic perturbations (RMPs) with high toroidal mode number n are considered for controlling edge-localized modes (ELMs) and divertor heat flux in future ITER H-mode operations. In this paper, characteristics of divertor heat flux under high-n RMPs (n = 3 and 4) in H-mode plasma are investigated using newly upgraded infrared thermography diagnostic in EAST. Additional splitting strike point (SSP) accompanying with ELM suppression is observed under both RMPs with n = 3 and n = 4, the SSP in heat flux profile agrees qualitatively with the modeled magnetic footprint. Although RMPs suppress ELMs, they increase the stationary heat flux during ELM suppression. The dependence of heat flux on
q
95
during ELM suppression is preliminarily investigated, and further splitting in the original strike point is observed at
q
95
=
4
during ELM suppression. In terms of ELM pulses, the presence of RMPs shows little influence on transient heat flux distribution.
Funder
National Key Research and Development Program of China
External Cooperation Program of Chinese Academy of Sciences
Science Foundation of Institute of Plasma Physics, Chinese Academy of Sciences
Anhui Provincial Natural Science Foundation
Foundation of President of Hefei Institutes of Physical Science, CAS
National MCF Energy R&D Program
National Natural Science Foundation of China
Users with Excellence Program of Hefei Science Center CAS
Cited by
1 articles.
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