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Flux-expansion divertor studies in TJ-II

机译：TJ-II的通量膨胀偏滤器研究

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摘要

The flux-expansion divertor concept is theoretically explored in TJ-II. This concept seems to be most suitable for this flexible stellarator in which the positions and the order of the resonances can be varied. As a first step, a family of configurations that exhibit flux expansion is identified. Then, a three-dimensional map of the collisional particle flux has been obtained for two different plasma regimes using the full-f Monte Carlo code ISDEP (Integrator of Stochastic Differential Equations in Plasmas), which computes the ion guiding-centre trajectories. The particle trajectories rather than the field lines must be considered since ion orbits can drift from the field lines in TJ-II and the plasma electric field and the collisionality must be considered in such calculations. We have checked that it is possible to strongly reduce the heat and particle fluxes by intercepting the trajectories at a given zone of the space. These calculations are done for thermal ions and for fast particles coming from the neutral beam injection heating. Future studies, possibly including the creation of an ergodic zone, will determine the best strategy for intercepting the trajectories.
机译：TJ-II在理论上探讨了通量膨胀偏滤器的概念。这个概念似乎最适合于这种弹性的恒星发生器，在这种谐振器中，共振的位置和顺序可以改变。第一步，确定显示通量膨胀的一系列配置。然后，使用全f蒙特卡洛代码ISDEP（等离子中的随机微分方程积分器）获得了两种不同等离子体态的碰撞粒子通量的三维图，该图计算了离子引导中心的轨迹。必须考虑粒子轨迹而不是场线，因为离子轨道可能会从TJ-II中的场线漂移，并且等离子体电场和碰撞性必须在此类计算中考虑。我们已经检查出，通过截取空间给定区域的轨迹，可以大大减少热量和颗粒通量。这些计算是针对热离子和来自中性束注入加热的快速粒子进行的。未来的研究（可能包括遍历区域的创建）将确定拦截轨迹的最佳策略。

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  • 来源
    《Nuclear fusion》 |2009年第8期|171-180|共10页
  • 作者

    F. Castejon; J.L. Velasco; A. Lopez-Fraguas; A. Tarancon; J. Guasp; F. Tabares; M.A. Pedrosa; E. de la Cal; M.A. Ochando;

  • 作者单位

    Laboratorio Nacional de Fusion-Asociacion Euratom/Ciemat, 28040-Madrid, Spain Departamento de Fisica Teorica, Universidad de Zaragoza, 50009-Zaragoza, Spain;

    BIFI: Instituto de Biocomputacion y Fisica de Sistemas Complejos, 50009-Zaragoza, Spain Departamento de Fisica Teorica, Universidad de Zaragoza, 50009-Zaragoza, Spain;

    Laboratorio Nacional de Fusion-Asociacion Euratom/Ciemat, 28040-Madrid, Spain;

    BIFI: Instituto de Biocomputacion y Fisica de Sistemas Complejos, 50009-Zaragoza, Spain Departamento de Fisica Teorica, Universidad de Zaragoza, 50009-Zaragoza, Spain;

    Laboratorio Nacional de Fusion-Asociacion Euratom/Ciemat, 28040-Madrid, Spain;

    Laboratorio Nacional de Fusion-Asociacion Euratom/Ciemat, 28040-Madrid, Spain;

    Laboratorio Nacional de Fusion-Asociacion Euratom/Ciemat, 28040-Madrid, Spain;

    Laboratorio Nacional de Fusion-Asociacion Euratom/Ciemat, 28040-Madrid, Spain;

    Laboratorio Nacional de Fusion-Asociacion Euratom/Ciemat, 28040-Madrid, Spain;

  • 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 properties; stellarators; torsatrons; heliacs; bumpy tori; and other toroidal confinement devices; power exhaust; divertors;

    机译：运输特性;恒星旋风加速器直升机颠簸的花托和其他环形限制装置;动力排气转向器;

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