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Application of three-dimensional MHD equilibrium calculation coupled with plasma response to island divertor experiments on J-TEXT
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作者 Wei XIE Yunfeng liANG +13 位作者 Zhonghe JIANG Yasuhiro SUZUKI li li Jiankun HUA Jie HUANG Alexander KNIEPS Song ZHOU Feiyue MAO Xin XU Keze li Yutong YANG Ziyang JIN cunkai li the J-TEXT Team 《Plasma Science and Technology》 SCIE EI CAS CSCD 2024年第11期71-86,共16页
Three-dimensional(3D) equilibrium calculations, including the plasma rotation shielding effect to resonant magnetic perturbations(RMPs) produced by the island divertor(ID) coils, were carried out using the HINT and MA... Three-dimensional(3D) equilibrium calculations, including the plasma rotation shielding effect to resonant magnetic perturbations(RMPs) produced by the island divertor(ID) coils, were carried out using the HINT and MARS-F codes on J-TEXT. Validation of 3D equilibrium calculations with experimental observations demonstrates that the shielding effect will prevent the penetration of the edge m/n = 3/1 mode component when the ID coil current is 4 k A, while change the size of magnetic islands once the current exceeds the penetration threshold. This indicates that equilibrium calculations including the plasma rotation shielding effect to RMPs can lead to better agreements with experimental observations compared to the vacuum approximation method. Additionally, the magnetic topology at the boundary undergoes changes,impacting the interaction between the plasma and the target plate. These results may be important in understanding RMP effects on edge transport and magnetohydrodynamic(MHD)instability control, as well as divertor heat and particle flux distribution control. 展开更多
关键词 magnetic topology resonant magnetic perturbation 3D equilibrium shielding effect
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Characteristics of the SOL ion-to-electron temperature ratio on the J-TEXT tokamak with different plasma configurations
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作者 李存凯 梁云峰 +16 位作者 江中和 周松 华建坤 阳杰 杨庆虎 Alexander KNIEPS Philipp DREWS 徐鑫 毛飞越 谢伟 杨雨桐 郭金龙 李杨波 任正康 陈志鹏 王能超 the J-TEXT Team 《Plasma Science and Technology》 SCIE EI CAS CSCD 2024年第2期13-21,共9页
Accurate measurement of the average plasma parameters in the edge region,including the temperature and density of electrons and ions,is critical for understanding the characteristics of the scrape-off layer(SOL) and d... Accurate measurement of the average plasma parameters in the edge region,including the temperature and density of electrons and ions,is critical for understanding the characteristics of the scrape-off layer(SOL) and divertor plasma transport in magnetically confined fusion research.On the J-TEXT tokamak,a multi-channel retarding field analyzer(RFA) probe has been developed to study average plasma parameters in the edge region under various poloidal divertor and island divertor configurations.The edge radial profile of the ion-to-electron temperature ratio,τ_(i/e),has been determined,which gradually decreases as the SOL ion self-collisionality,v_(SOL)*,increases.This is broadly consistent with what has been observed previously from various tokamak experiments.However,the comparison of experimental results under different configurations shows that in the poloidal divertor configuration,even under the same v_(SOL)*,τ_(i/e) in the SOL region becomes smaller as the distance from the X-point to the target plate increases.In the island divertor configuration,τ_(i/e) near the O-point is higher than that near the X-point at the same v_(SOL)*,and both are higher than those in the limiter configuration.These results suggest that the magnetic configuration plays a critical role in the energy distributions between electrons and ions at the plasma boundary. 展开更多
关键词 ion temperature island divertor poloidal divertor retarding field analyzer(RFA)probe
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Towards advanced divertor configurations on the J-TEXT tokamak
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作者 Yunfeng liANG Zhipeng CHEN +24 位作者 Nengchao WANG Zhifeng CHENG Alexander KNIEPS Song ZHOU Bo RAO Shuai XU Philipp DREWS Xiaolong ZHANG Hao WANG Zhaosu WANG Jie YANG Xin XU Jiankun HUA Qinghu YANG Wei YAN cunkai li Yutong YANG Shuhao li Shaocheng liU lin NIE Ting LONG liang liAO Fuqiong WANG Yasuhiro SUZUKI the J-TEXT Team 《Plasma Science and Technology》 SCIE EI CAS CSCD 2022年第12期233-250,共18页
Developing advanced magnetic divertor configurations to address the coupling of heat and particle exhaust with impurity control is one of the major challenges currently constraining the further development of fusion r... Developing advanced magnetic divertor configurations to address the coupling of heat and particle exhaust with impurity control is one of the major challenges currently constraining the further development of fusion research.It has therefore become the focus of extensive attention in recent years.In J-TEXT,several new divertor configurations,including the high-field-side single-null poloidal divertor and the island divertor,as well as their associated fundamental edge divertor plasma physics,have recently been investigated.The purpose of this paper is to briefly summarize the latest progress and achievements in this relevant research field on J-TEXT from the past few years. 展开更多
关键词 DIVERTOR TOKAMAK magnetically confined fusion
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