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Influence of the X-point location on edge plasma transport in the J-TEXT tokamak with a high-field-side single-null divertor

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Plasma Science and Technology 2021年第12期23卷 42-54页

作者： Hao WANG Yunfeng LIANG Shuai XU Zhonghe JIANG Yuhe FENG A KNIEPS P DREWS Jie YANG Xin XU Ting LONG Shaodong JIAO Xiaolong ZHANG Zhigang HAO Qinglong YANG Zhipeng CHEN Zhongyong CHEN Nengchao WANG Zhoujun YANG Xiaoqing ZHANG Yonghua DING Yuan PAN the J-TEXT Team International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics State Key Laboratory of Advanced Electromagnetic Engineering and TechnologySchool of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074People's Republic of China Forschungszentrum Julich GmbH Institut fur Energie-und Klimaforschung-PlasmaphysikPartner of the Trilateral Euregio Cluster(TEC)52425 JiilichGermany Institute of Plasma Physics Chinese Academy of SciencesHefei 230031People's Republic of China Max-Planck-Institut fur Plasmaphysik EURATOM Association17491 GreifswaldGermany Southwestern Institute of Physics Chengdu 610041People's Republic of China Advanced Energy Research Center Shenzhen UniversityShenzhen 518060People's Republic of China

High-density experiments in the high-field-side mid-plane single-null divertor configuration have been performed for the first time on *** experiments show an increase in the highest central channel line-averaged density from 2.73×10^(19)m^(-3) to 6.49×10^(19)m^(-3),while the X-point moves away from the target by increasing the divertor coil *** corresponding Greenwald fraction rises from 0.50 to *** the impurity transport,the density normalized radiation intensity(absolute extreme ultraviolet and soft x-ray)of the central channel density decreased significantly(>50%)with an increase in the plasma *** better understand the underlying physics mechanisms,the 3 D edge Monte Carlo code coupled with EIRENE(EMC3-EIRENE)has been implemented for the first time on *** simulation results show good agreement with the experimental *** the X-point moves away from the target,the divertor power decay length drops and the scrape-off layer impurity screening effect is enhanced.

关键词： edge plasma transport divertor configuration EMC3-EIRENE

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Towards advanced divertor configurations on the J-TEXT tokamak

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Plasma Science and Technology 2022年第12期24卷 233-250页

作者： Yunfeng LIANG Zhipeng CHEN 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 International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics State Key Laboratory of Advanced Electromagnetic Engineering and TechnologySchool of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074People's Republic of China Forschungszentrum Jülich GmbH Institut für Energie-und Klimaforschung-PlasmaphysikPartner of the Trilateral Euregio Cluster(TEC)Jülich 52425Germany Institute of Plasma Physics Chinese Academy of SciencesHefei 230031People's Republic of China Southwestern Institute of Physics Chengdu 610041People's Republic of China Department of Applied Physics College of ScienceDonghua UniversityShanghai 201620People's Republic of China Graduate School of Advanced Science and Engineering Hiroshima UniversityHigashi-Hiroshima 739-8527Japan

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 *** has therefore become the focus of extensive attention in recent *** 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 *** 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.

关键词： divertor tokamak magnetically confined fusion

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J-TEXT achievements in turbulence and transport in support of future device/reactor

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Plasma Science and Technology 2024年第11期26卷 1-21页

作者： Zhipeng CHEN Zhangsheng HUANG Min JIANG Ting LONG Lu WANG Weixin GUO Zhoujun YANG Hai LIU Tao LAN Kaijun ZHAO Yuhong XU Rui KE Youwen SUN Hanhui LI Wen HE Ge ZHUANG Yuejiang SHI Wulyu ZHONG Yonghua DING Yunfeng LIANG Wenjing TIAN Xin XU Guodong ZHANG M.S.HUSSAIN Patrick H.DIAMOND State Key Laboratory of Advanced Electromagnetic Technology International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma PhysicsSchool of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074People’s Republic of China Southwestern Institute of Physics Chengdu 610041People’s Republic of China Institute of Fusion Science School of Physical Science and TechnologySouthwest Jiaotong UniversityChengdu 610031People’s Republic of China Department of Plasma Physics and Fusion Engineering University of Science and Technology of ChinaHefei 230026People’s Republic of China School of Nuclear Science and Engineering East China University of TechnologyNanchang 330013People’s Republic of China Institute of Plasma Physics Chinese Academy of SciencesHefei 230031People’s Republic of China College of Electrical Engineering&New Energy China Three Gorges UniversityYichang 443002People’s Republic of China Department of Engineering and Applied Physics School of Physical SciencesUniversity of Science and Technology of ChinaHefei 230026People’s Republic of China ENN Science and Technology Development Co.Ltd. and Hebei Key Laboratory of Compact FusionLangfang 065001People’s Republic of China Forschungszentrum Jülich GmbH Institut für Energie-und Klimaforschung-PlasmaphysikPartner of the Trilateral Euregio Cluster(TEC)Jülich 52425Germany Tsinghua University Beijing 100084People’s Republic of China School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230026People’s Republic of China Center for Astrophysics and Space Sciences University of California San DiegoLa Jolla CA 92093United States of America

Following the reconstruction of the TEXT tokamak at Huazhong University of Science and Technology in China, renamed as J-TEXT, a plethora of experimental and theoretical investigations has been conducted to elucidate the intricacies of turbulent transport within the tokamak configuration. These endeavors encompass not only the J-TEXT device's experimental advancements but also delve into critical issues pertinent to the optimization of future fusion devices and reactors. The research includes topics on the suppression of turbulence, flow drive and damping, density limit, non-local transport, intrinsic toroidal flow, turbulence and flow with magnetic islands, turbulent transport in the stochastic layer, and turbulence and zonal flow with energetic particles or helium ash. Several important achievements have been made in the last few years, which will be further elaborated upon in this comprehensive review.

关键词： J-TEXT tokamak turbulence transport flow

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