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Integrated modelling of the Globus-M tokamak plasma and a comparison with SOL width scaling

机译:Globus-M托卡马克等离子体的集成建模以及与SOL宽度缩放的比较

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摘要

Recently a scheme for the coupling of the one-dimensional core transport code ASTRA and the two-dimensional edge transport code B2SOLPS was developed, thus providing the integrated modelling of tokamak discharge. Here, this scheme is improved by taking impurities into account and by considering a real flux surface shape using the equilibrium code SPIDER. This integrated modelling is applied to discharges of the spherical tokamak Globus-M to study the dependence of the scrape-off layer (SOL) width and divertor heat loads on the discharge power and the plasma current. Since these values, together with the magnetic field, are relatively small in Globus-M, this study can test the existing scaling against data in a wider range of tokamak operational parameters. The modelling results agree reasonably with Thomson scattering and Langmuir probe measurements and allow, in principle, the determination of the physical mechanisms responsible for the SOL structure formation. It is found that the SOL width is approximately inversely proportional to the plasma current, in agreement with existing experimental scaling, while its dependence on discharge power is found to be quite weak.
机译:最近,开发了一种将一维核心传输码ASTRA和二维边缘传输码B2SOLPS耦合的方案,从而提供了托卡马克放电的集成模型。在此,通过考虑杂质并使用平衡代码SPIDER考虑实际磁通量表面形状来改进此方案。该集成模型应用于球形托卡马克Globus-M的放电,以研究刮除层(SOL)宽度和偏滤器热负荷对放电功率和等离子体电流的依赖性。由于Globus-M中的这些值以及磁场相对较小,因此本研究可以针对更广泛的Tokamak操作参数中的数据测试现有的缩放比例。建模结果与Thomson散射和Langmuir探针测量结果基本吻合,并且原则上可以确定导致SOL结构形成的物理机制。发现SOL宽度与等离子体电流大致成反比,与现有的实验规模一致,而发现其对放电功率的依赖性非常弱。

著录项

  • 来源
    《Nuclear fusion》 |2015年第5期|053012.1-053012.7|共7页
  • 作者单位

    Saint Petersburg State Polytechnical University, 195251, Politechnicheskaya ul., 29, St. Petersburg, Russia;

    Saint Petersburg State Polytechnical University, 195251, Politechnicheskaya ul., 29, St. Petersburg, Russia;

    Saint Petersburg State Polytechnical University, 195251, Politechnicheskaya ul., 29, St. Petersburg, Russia,Departamento de Fisica, Universidad Carlos Ⅲ de Madrid, Leganes, Spain;

    Saint Petersburg State Polytechnical University, 195251, Politechnicheskaya ul., 29, St. Petersburg, Russia;

    Saint Petersburg State Polytechnical University, 195251, Politechnicheskaya ul., 29, St. Petersburg, Russia,IJL UMR 7198 CNRS - Universite de Lorraine, BP 70239, F-54506 Vandoeuvre-les-Nancy, Cedex, France;

    Saint Petersburg State Polytechnical University, 195251, Politechnicheskaya ul., 29, St. Petersburg, Russia;

    Saint Petersburg State Polytechnical University, 195251, Politechnicheskaya ul., 29, St. Petersburg, Russia;

    Saint Petersburg State Polytechnical University, 195251, Politechnicheskaya ul., 29, St. Petersburg, Russia;

    Ioffe Physical-Technical Institute of the Russian Academy of Sciences, 194021, Polytechnicheskaya, 26, St. Petersburg, Russia;

    Ioffe Physical-Technical Institute of the Russian Academy of Sciences, 194021, Polytechnicheskaya, 26, St. Petersburg, Russia;

    Ioffe Physical-Technical Institute of the Russian Academy of Sciences, 194021, Polytechnicheskaya, 26, St. Petersburg, Russia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    transport codes; integrated modelling; plasma edge; SOL width;

    机译:运输代码;集成建模;等离子边缘SOL宽度;
  • 入库时间 2022-08-18 00:42:31

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