首页> 外文期刊>Nuclear fusion >Achievement of high fusion triple product, steady-state sustainment and real-time NTM stabilization in high-β_P ELMy H-mode discharges in JT-60U
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Achievement of high fusion triple product, steady-state sustainment and real-time NTM stabilization in high-β_P ELMy H-mode discharges in JT-60U

机译:在JT-60U中的高β_PELMy H模式放电中实现高融合三乘积,稳态维持和实时NTM稳定

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摘要

This paper reports results on the progress in steady-state high β_P ELMy H-mode discharges in JT-60U. A fusion triple product, n_D(0)τ_ET_i(0), of 3.1 * 10~(20)m~(-3) s keV under full non-inductive current drive has been achieved at I_p = 1.8 MA, which extends the record value of the fusion triple product under full non-inductive current drive by 50%. A high-beta plasma with β_N ~ 2.7 has been sustained for 7.4 s (~60τ_E), with the duration determined only by the facility limits, such as the capability of the poloidal field coils and the upper limit on the duration of injection of neutral beams. Destabilization of neoclassical tearing modes (NTMs) has been avoided with good reproducibility by tailoring the current and pressure profiles. On the other hand, a real-time NTM stabilization system has been developed where detection of the centre of the magnetic island and optimization of the injection angle of the electron cyclotron wave are done in real time. By applying this system, a 3/2 NTM has been completely stabilized in a high-beta region (β_p ~ 1.2, β_N ~ 1.5), and the beta value and confinement enhancement factor have been improved by the stabilization.
机译:本文报道了JT-60U在稳态高β_PELMy H型放电过程中取得的进展。在I_p = 1.8 MA的情况下,已经实现了在完全无感电流驱动下的3.1 * 10〜(20)m〜(-3)s keV的融合三乘积n_D(0)τ_ET_i(0),从而扩展了记录在完全无感电流驱动下,熔融三元产物的值降低了50%。 β_N〜2.7的高β等离子体已持续7.4 s(〜60τ_E),持续时间仅由设施极限决定,例如极向场线圈的能力和中性离子注入持续时间的上限梁。通过调整电流和压力曲线,可以很好地避免新古典撕裂模式(NTM)的不稳定。另一方面,已经开发了实时NTM稳定系统,其中可以实时完成磁岛中心的检测和电子回旋波的注入角的优化。通过应用该系统,3/2 NTM已完全稳定在高β区域(β_p〜1.2,β_N〜1.5)中,并且通过稳定,β值和限制增强因子得到了改善。

著录项

  • 来源
    《Nuclear fusion》 |2003年第10期|p. 1272-1278|共7页
  • 作者单位

    Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Naka, Ibaraki 311-0193, Japan;

    Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Naka, Ibaraki 311-0193, Japan;

    Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Naka, Ibaraki 311-0193, Japan;

    Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Naka, Ibaraki 311-0193, Japan;

    Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Naka, Ibaraki 311-0193, Japan;

    Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Naka, Ibaraki 311-0193, Japan;

    Science and Technology Center for Atoms, Molecules and Ions Control, Osaka University, Suita, Osaka 565-0871, Japan;

    Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Naka, Ibaraki 311-0193, Japan;

    Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Naka, Ibaraki 311-0193, Japan;

    Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Naka, Ibaraki 311-0193, Japan;

  • 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 原子核物理学、高能物理学;
  • 关键词

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