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首页> 外文期刊>Nuclear fusion >Characteristics of global energy confinement in KSTAR L- and H-mode plasmas
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Characteristics of global energy confinement in KSTAR L- and H-mode plasmas

机译：KSTAR L和H模式等离子体中的全局能量限制特征

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摘要

We evaluate the characteristics of global energy confinement in KSTAR (τ_(E,KSTAR)) quantitatively in three ways; firstly by comparing it with multi-machine scalings, secondly by deriving multiple regression equations for the L- and the H-mode plasmas, respectively, and lastly by comparing confinement enhancement of the H-mode phase with respect to the L-mode phase in each discharge defined as H_(exp). The KSTAR database exhibits τ_(E,KSTAR) of ～0.04 to ～0.16 s and of ～0.06 to ～0.19 s in L-mode and in H-mode plasmas, respectively. The multiple regression equations derived by statistical analysis present the similar dependency on P_L and higher dependency on I_p compared with the multi-machine scalings, however the dependency on k in both L- and H-mode plasmas draw the negative power dependency of K~(-0.68) and k~(-0.76) for H-mode and for L-mode database, respectively on the contrary to the positive dependency in all multi-machine empirical scalings. It is found that the energy confinement of both L-mode and H-mode of the discharges with H_(exp) ＞ 1.5 can be well-predicted by multi-machine scalings, τ_(E,89L) and τ_(E,92H) Apart from this, the H-mode confinement with 1.5 ＜ H_(exp) ＜ 2.0 is well-predicted by using the multi-machine empirical L-mode scaling τ_(E,89L).
机译：我们通过三种方式定量评估了KSTAR（τ_（E，KSTAR））中的全球能源限制特征。首先，将其与多机缩放进行比较，其次，分别推导L型和H型等离子体的多个回归方程，最后，通过比较H型相相对于L型相的约束增强每次放电定义为H_（exp）。在L型和H型等离子体中，KSTAR数据库的τ_（E，KSTAR）分别为〜0.04至〜0.16 s和〜0.06至〜0.19 s。通过统计分析得出的多元回归方程与多机定标相比，对P_L的依赖性更高，对I_p的依赖性更高，但是在L型和H型等离子体中，对k的依赖性都得出了K〜（）的负功率依赖性。 （-0.68）和k〜（-0.76）分别用于H模式数据库和L模式数据库，这与所有多机经验标度中的正相关性相反。结果发现，H_（exp）＞ 1.5的放电的L型和H型能量限制都可以通过多机缩放τ_（E，89L）和τ_（E，92H）很好地预测除此之外，通过使用多机经验L模式缩放τ_（E，89L）可以很好地预测1.5 ＜H_（exp）＜2.0的H模式限制。

著录项

  • 来源
    《Nuclear fusion》 |2014年第8期|083012.1-083012.11|共11页
  • 作者

    H.-S. Kim; Y.M. Jeon; Y.-S. Na; Y.-c. Ghim; J.-W. Ahn; S.W. Yoon; J.G. Bak; Y.S. Bae; J.S. Kim; M. Joung; J.-H. Jeong; S.H. Hong; K.M. Kim; T. Suzuki; W.C. Kim; J.-G. Kwak;

  • 作者单位

    Department of Nuclear Engineering, Seoul National University, Seoul, Korea;

    National Fusion Research Institute, Daejeon, Korea;

    Department of Nuclear Engineering, Seoul National University, Seoul, Korea;

    Department of Nuclear and Quantum Engineering, KAIST, Daejeon, Korea;

    Oak Ridge National Laboratory, Oak Ridge, TN, USA;

    National Fusion Research Institute, Daejeon, Korea;

    National Fusion Research Institute, Daejeon, Korea;

    National Fusion Research Institute, Daejeon, Korea;

    National Fusion Research Institute, Daejeon, Korea;

    National Fusion Research Institute, Daejeon, Korea;

    National Fusion Research Institute, Daejeon, Korea;

    National Fusion Research Institute, Daejeon, Korea;

    Princeton Plasma Physics Laboratory, Princeton, NJ, USA;

    Japan Atomic Energy Agency, Naka, Japan;

    ITER Organization, Saint-Paul-Lez-Durance, France;

    National Fusion Research Institute, Daejeon, Korea;

  • 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
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  • 关键词

    KSTAR; global energy confinement time; multi-machine scaling; confinement enhancement; L-mode; H-mode; regression analysis;

    机译：科士达;全球能源限制时间;多机缩放禁闭增强;L模式H模式回归分析;

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