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

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外文摘要：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.

外文关键词：

infrared cameraisland divertorheat fluxSMBIpower detachment

作者：

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

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作者单位：

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

出版年：

2024

DOI：

10.1088/2058-6272/ad6816

等离子体科学和技术(英文版)

中国科学院合肥物质科学研究所中国力学学会

等离子体科学和技术(英文版)

影响因子：0.297

ISSN：1009-0630

年,卷(期)：2024.26(12)