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Effects of nitrogen seeding on core ion thermal transport in JET ILW L-mode plasmas

机译：氮注入对JET ILW L型等离子体中核心离子热传输的影响

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摘要

A set of experiments was carried out in JET ILW (Joint European Torus with ITER-Like Wall) L-mode plasmas in order to study the effects of light impurities on core ion thermal transport. N was puffed into some discharges and its profile was measured by active Charge Exchange diagnostics, while ICRH power was deposited on- and off-axis in (~3He) - D minority scheme in order to have a scan of local heat flux at constant total power with and without TV injection. Experimentally, the ion temperature profiles are more peaked for similar heat fluxes when N is injected in the plasma. Gyro-kinetic simulations using the GENE code indicate that a stabilization of Ion Temperature Gradient driven turbulent transport due to main ion dilution and to changes in T_e/T_i and s/q is responsible of the enhanced peaking. The quasi-linear models TGLF and QuaLiKiz are tested against the experimental and the gyro-kinetic results.
机译：为了研究轻质杂质对核心离子热传输的影响，在JET ILW（具有ITER样壁的欧洲联合圆环）L型等离子体中进行了一组实验。将N喷入一些放电中，并通过主动电荷交换诊断仪测量其轮廓，同时将ICRH功率以（〜3He）-D少数方案在轴上和轴外沉积，以便在恒定总流量下扫描局部热通量有无电视注入功能。实验上，当在等离子体中注入N时，对于相似的热通量，离子温度曲线会达到更高的峰值。使用GENE代码进行的陀螺动力学模拟表明，由于主离子稀释以及T_e / T_i和s / q的变化，离子温度梯度驱动的湍流传输稳定，这是增强峰化的原因。针对实验和陀螺动力学结果测试了准线性模型TGLF和QuaLiKiz。

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  • 来源
    《Nuclear fusion》 |2018年第2期|026028.1-026028.12|共12页
  • 作者

    N. Bonanomi; P. Mantica; J. Citrin; C. Giroud; E. Lerche; C. Sozzi; D. Taylor; M. Tsalas; D. Van Eester;

  • 作者单位

    University of Milano-Bicocca, Milano, Italy,CNR-Institute of Plasma Physics 'P. Caldirola', Milano, Italy;

    CNR-Institute of Plasma Physics 'P. Caldirola', Milano, Italy;

    DIFFER-Dutch Institute for Fundamental Energy Research, De Zaale 20, 5612 AJ Eindhoven, Netherlands;

    Culham Centre for Fusion Energy, Abingdon, OX 14 3DB, United Kingdom;

    LPP-ERM/KMS, TEC partner, Brussels, Belgium;

    CNR-Institute of Plasma Physics 'P. Caldirola', Milano, Italy;

    Culham Centre for Fusion Energy, Abingdon, OX 14 3DB, United Kingdom;

    DIFFER-Dutch Institute for Fundamental Energy Research, De Zaale 20, 5612 AJ Eindhoven, Netherlands,Culham Centre for Fusion Energy, Abingdon, OX 14 3DB, United Kingdom;

    LPP-ERM/KMS, TEC partner, Brussels, Belgium;

  • 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

    turbulent transport; gyrokinetic simulations; quasilinear simulations; nuclear fusion; light impurities in JET;

    机译：湍流运输;陀螺动力学模拟;准线性模拟;核聚变JET中的轻杂质;

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