Characteristics of divertor heat flux distribution with an island divertor configuration on the J-TEXT tokamak  

作　　者：Yutong YANG Yunfeng LIANG Wei YAN Shuangbao SHU Jiankun HUA Song ZHOU Qinghu YANG Jinlong GUO Ziyang JIN Wei XIE the J-TEXT Team 杨雨桐;梁云峰;严伟;舒双宝;华建坤;周松;杨庆虎;郭金龙;金子阳;谢伟;the J-TEXT Team(State Key Laboratory of Advanced Electromagnetic Technology,International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics,School of Electrical and Electronic Engineering,Huazhong University of Science and Technology,Wuhan 430074,People’s Republic of China;Forschungszentrum Jülich GmbH,Institut für Energie-und Klimaforschung-Plasmaphysik,Partner of the Trilateral Euregio Cluster(TEC),Jülich 52425,Germany;School of Instrument Science and Opto-electronics Engineering,Hefei University of Technology,Hefei 230009,People’s Republic of China;不详)

机构地区：[1]State Key Laboratory of Advanced Electromagnetic Technology,International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics,School of Electrical and Electronic Engineering,Huazhong University of Science and Technology,Wuhan 430074,People’s Republic of China [2]Forschungszentrum Jülich GmbH,Institut für Energie-und Klimaforschung-Plasmaphysik,Partner of the Trilateral Euregio Cluster(TEC),Jülich 52425,Germany [3]School of Instrument Science and Opto-electronics Engineering,Hefei University of Technology,Hefei 230009,People’s Republic of China [4]不详

出　　处：《Plasma Science and Technology》2024年第12期9-17,共9页等离子体科学和技术（英文版）

基　　金：supported by the National Magnetic Confinement Fusion Energy R&D Program of China(No.2018YFE0309103);National Natural Science Foundation of China(Nos.12305243 and 51821005)。

摘　　要：On J-TEXT,the temporal evolution of heat flux distribution on the high-field side(HFS)divertor plate has been measured by an infrared(IR)camera during the plasma operation with an island divertor configuration.In experiments,the island divertor configuration is an edge magnetic island chain structure surrounded by stochastic layers,which can be induced by resonant magnetic perturbations(RMPs).The experimental results show that the heat flux distribution on the HFS target plate depends significantly on the edge magnetic topology.Furthermore,the impact of hydrogen fueling using supersonic molecular beam injection(SMBI)on the divertor heat flux distributions is studied on J-TEXT with an island divertor configuration.It has been observed that power detachment can be achieved when the radiation front approaches the last closed flux surface(LCFS)after each SMBI pulse.This result may provide a method of access for divertor detachment on a fusion device with a three-dimensional(3D)boundary magnetic structure.

关 键 词：infrared camera island divertor heat flux SMBI power detachment 

分 类 号：TL631.24[核科学技术—核技术及应用]