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

被引:0
|
作者
Yang, Yutong [1 ]
Liang, Yunfeng [1 ,2 ]
Yan, Wei [1 ]
Shu, Shuangbao [3 ]
Hua, Jiankun [1 ]
Zhou, Song [1 ]
Yang, Qinghu [1 ]
Guo, Jinlong [1 ]
Jin, Ziyang [1 ]
Xie, Wei [1 ]
机构
[1] Huazhong Univ Sci & Technol, Sch Elect & Elect Engn, Int Joint Res Lab Magnet Confinement Fus & Plasma, State Key Lab Adv Electromagnet Technol, Wuhan 430074, Peoples R China
[2] Forschungszentrum Julich, Inst Energie & Klimaforsch Plasmaphys, Partner Trilateral Euregio Cluster TEC, D-52425 Julich, Germany
[3] Hefei Univ Technol, Sch Instrument Sci & Optoelect Engn, Hefei 230009, Peoples R China
基金
中国国家自然科学基金;
关键词
infrared camera; island divertor; heat flux; SMBI; power detachment; DETACHMENT;
D O I
10.1088/2058-6272/ad6816
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
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.
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页数:9
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