Study on divertor heat flux under n=3 and n=4 resonant magnetic perturbations using infrared thermography diagnostic in EAST  

作　　者：Ruirong LIANG Xianzu GONG Bin ZHANG Zhendong YANG Manni JIA Youwen SUN Qun MA Jiayuan ZHANG Yunchan HU Jinping QIAN the EAST Team 梁瑞荣;龚先祖;张斌;仰振东;贾曼妮;孙有文;马群;张家源;胡云禅;钱金平;the EAST Team(Institute of Plasma Physics,Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031,People's Republic of China;University of Science and Technology of China,Hefei 230026,People's Republic of China;Tongling University,Tongling 244000,People's Republic of China)

机构地区：[1]Institute of Plasma Physics,Hefei Institutes of Physical Science,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]Tongling University,Tongling 244000,People's Republic of China

出　　处：《Plasma Science and Technology》2022年第10期30-36,共7页等离子体科学和技术（英文版）

基　　金：supported by the National Key Research and Development Program of China (No. 2017YFA0402500);the National MCF Energy R&D Program of China (No. 2019YFE03040000);National Natural Science Foundation of China (Nos. 12005262 and 11975274);the Foundation of President of Hefei Institutes of Physical Science, CAS (No. YZJJ2018QN8);the Anhui Provincial Natural Science Foundation (No. 2108085J06);the Users with Excellence Program of Hefei Science Center CAS (Nos. 2021HSC-UE018 and 2020HSC-UE011);External Cooperation Program of Chinese Academy of Sciences (No. 116134KYSB20180035);Science Foundation of Institute of Plasma Physics, Chinese Academy of Sciences (No. DSJJ-2021-04)

摘　　要：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-nRMPs(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 495=during ELM suppression.In terms of ELM pulses,the presence of RMPs shows little influence on transient heat flux distribution.

关 键 词：resonant magnetic perturbation(RMP) divertor heat flux strike point splitting infrared thermography diagnostic 

分 类 号：TL631.24[核科学技术—核技术及应用]