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Formation of closed flux surfaces in spheromaks sustained by steady inductive helicity injection

机译:通过稳定的电感螺旋注射液维持的封闭磁通表面的形成

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摘要

The helicity injected torus with steady inductive helicity injection device is a simply- connected toroidal device that forms and sustains axisymmetric spheromak equilibria through the use of steady inductive helicity injection, which inject magnetic helicity through the inductive drive of non-axisymmetric currents on the edge of the plasma. Simulations of high-gain scenarios, using the NIMROD code and based on models validated with low gain experimental operations, indicate the formation of closed flux surfaces at current amplifications of six. Despite the helicity injection scheme adding magnetic perturbations of order delta b/B similar to 10%, these closed flux equilibria are able to persist for as long as 20 injector periods (1.3 ms) before breaking apart due to other plasma generated instabilities.
机译:具有稳定感应螺旋注射装置的螺旋注入的环节是一种简单连接的环形装置,通过使用稳定的感应螺旋注射来形成和维持轴对称的Spheromak均衡,该螺杆注入通过在边缘上的非轴对称电流的电感驱动来注入磁螺旋的磁螺旋等离子体。使用Nimrod码和基于低增益实验操作验证的模型的高增益方案模拟,表明在六个电流扩增时形成闭合磁通面的形成。尽管螺旋性注射方案添加了达到达到的达到10%的顺序ΔB/ B的磁性扰动,但是由于其他等离子体产生的不稳定性,这些闭合通量平衡能够持续到20个注射器周期(1.3ms)。

著录项

  • 来源
    《Nuclear fusion》 |2019年第6期|066037.1-066037.6|共6页
  • 作者单位

    Univ Washington Seattle WA 98195 USA;

    Univ Washington Seattle WA 98195 USA;

    Tibbar Plasma Tech Inc Los Alamos NM USA;

  • 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

    spheromaks; self-organization; helicity injection;

    机译:球形;自我组织;螺旋注射;

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