首页|Effects of vacuum magnetic field region on the compact torus trajectory in a tokamak plasma

Effects of vacuum magnetic field region on the compact torus trajectory in a tokamak plasma

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The trajectory of the compact torus(CT)within a tokamak discharge is crucial to fueling.In this study,we developed a penetration model with a vacuum magnetic field region to accurately determine CT trajectories in tokamak discharges.This model was used to calculate the trajectory and penetration parameters of CT injections by applying both perpendicular and tangential injection schemes in both HL-2A and ITER tokamaks.For perpendicular injection along the tokamak's major radius direction from the outboard,CTs with the same injection parameters exhibited a 0.08 reduction in relative penetration depth when injected into HL-2A and a 0.13 reduction when injected into ITER geometry when considering the vacuum magnetic field region compared with cases where this region was not considered.In addition,we proposed an optimization method for determining the CT's initial injection velocity to accurately calculate the initial injection velocity of CTs for central fueling in tokamaks.Furthermore,this paper discusses schemes for the tangential injection of CT into tokamak discharges.The optimal injection angle and CT magnetic moment direction for injection into both HL-2A and ITER were determined through numerical simulations.Finally,the kinetic energy loss occurring when the CT penetrated the vacuum magnetic field region in ITER was reduced by ΔEk=975.08 J by optimizing the injection angle for the CT injected into ITER.These results provide valuable insights for optimizing injection angles in fusion experiments.Our model closely represents actual experimental scenarios and can assist the design of CT parameters.

compact toruscentral fuelingvacuum magnetic field regionpenetration mechanismoptimization parameters

董期龙、张洁、兰涛、肖持进、庄革、陈晨、周永康、吴捷、龙婷、聂林、卢鹏程、王天雄、邬佳仁、邓鹏、汪兴康、柏泽琪、黄玉华、李杰、薛雷、阿迪力江、毛文哲、周楚、刘阿娣、吴征威、谢锦林、丁卫星、刘万东、陈伟、钟武律、许敏、段旭如

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Department of Plasma Physics and Fusion Engineering,University of Science and Technology of China,Hefei 230026,People's Republic of China

Southwestern Institute of Physics,Chengdu 610041,People's Republic of China

Department of Physics and Engineering Physics,University of Saskatchewan,Saskatoon SK S7N 5E2,Canada

Institute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031,People's Republic of China

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National Magnetic Confinement Fusion Science Program of ChinaNational Magnetic Confinement Fusion Science Program of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaChina Postdoctoral Science Foundation

2022YFE031000042022YFE030600031237522612175227118752552022M723066

2024

10.1088/2058-6272/ad36aa

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)

EI
影响因子：0.297
ISSN：1009-0630
年,卷(期)：2024.26(7)