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首页> 外文期刊>Plasma physics and controlled fusion >Density control by pellets in plasmas with ELM mitigation by RMPs in the ASDEX Upgrade tokamak
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Density control by pellets in plasmas with ELM mitigation by RMPs in the ASDEX Upgrade tokamak

机译：在Asdex升级到Kamak中，RMPS在等离子体中的颗粒颗粒的密度控制

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摘要

This paper describes the extension of the previous experimental database on density control by pellets and ELM control by RMPs in the ASDEX Upgrade tokamak. A stationary low triangularity plasma is sustained by simultaneous pellet fuelling and RMP ELM control at ion pedestal collisionality of nu(*i,ped) similar to 0.5. Refuelling of the RMP induced density pump-out requires a pellet rate of Phi(pel) similar to 0.073 P-aux/T-t,T-ped. The duration of refuelling of density pump-out can be minimised to about 3 energy confinement times. Pellet fuelling increases or preserves ion pedestal pressure with respect to unfuelled ELM suppressed/mitigated phase. Pellets cause transition from ELM suppression to ELMy regime: At low triangularity, the first pellet triggers a transition to an ELMy phase but subsequent ELMs are not modulated by pellets. At elevated triangularity, initial pellets trigger ELM-like events but in-between pellets ELM suppression is preserved. In later phase, as density increases the plasma transitions to an ELMy phase similar to low triangularity case.
机译：本文介绍了在ASDEX升级托卡克的RMPS通过颗粒和榆树控制对密度控制的先前实验数据库的扩展。静止的低三角形等离子体通过同时颗粒加油和离子基座的RMP ELM控制等离子基座（* I，PED）的RMP ELM控制等离持续，类似于0.5。 RMP诱导密度泵出的加油需要类似于0.073 p-Aux / T-T，T-PED的PHI（PEL）的颗粒率。密度泵出的加油持续时间可以最小化至约3个能量限制时间。颗粒燃料增加或保留相对于不封ELM抑制/减去相的离子基座压力。颗粒导致从ELM抑制到ELMY制度的过渡：在低三角形度下，第一颗粒触发到ELMY阶段的过渡，但随后的榆树未被颗粒调节。在三角形高升高，初始颗粒触发榆木状事件，但在颗粒颗粒抑制之间保留。在以后的阶段，因为密度将等离子体转变增加到类似于低三角形壳体的胶浆相。

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    Valovic M.; Lang P. T.; Kirk A.; Suttrop W.; Cavedon M.; Dunne M.; Fischer R.; Garzotti L.; Guimarais L.; Leuthold N.; Mc Carthy P. J.; Meyer H.; Mlynek A.; Ploeckl B.; Poli E.; Tardini G.; Viezzer E.; Wolfrum E.;

  • 作者单位

    Culham Sci Ctr CCFE Abingdon OX14 3DB Oxon England;

    Max Planck Inst Plasma Phys Boltzmannstr 2 D-85748 Garching Germany;

    Culham Sci Ctr CCFE Abingdon OX14 3DB Oxon England;

    Max Planck Inst Plasma Phys Boltzmannstr 2 D-85748 Garching Germany;

    Max Planck Inst Plasma Phys Boltzmannstr 2 D-85748 Garching Germany;

    Max Planck Inst Plasma Phys Boltzmannstr 2 D-85748 Garching Germany;

    Max Planck Inst Plasma Phys Boltzmannstr 2 D-85748 Garching Germany;

    Culham Sci Ctr CCFE Abingdon OX14 3DB Oxon England;

    Max Planck Inst Plasma Phys Boltzmannstr 2 D-85748 Garching Germany;

    Max Planck Inst Plasma Phys Boltzmannstr 2 D-85748 Garching Germany;

    Univ Coll Cork Dept Phys Cork Ireland;

    Culham Sci Ctr CCFE Abingdon OX14 3DB Oxon England;

    Max Planck Inst Plasma Phys Boltzmannstr 2 D-85748 Garching Germany;

    Max Planck Inst Plasma Phys Boltzmannstr 2 D-85748 Garching Germany;

    Max Planck Inst Plasma Phys Boltzmannstr 2 D-85748 Garching Germany;

    Max Planck Inst Plasma Phys Boltzmannstr 2 D-85748 Garching Germany;

    Max Planck Inst Plasma Phys Boltzmannstr 2 D-85748 Garching Germany;

    Max Planck Inst Plasma Phys Boltzmannstr 2 D-85748 Garching Germany;

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  • 正文语种 eng
  • 中图分类 等离子体物理学;
  • 关键词

    tokamak; pellet fuelling; ELM control by RMPs;

    机译：Tokamak;颗粒加油;榆树通过RMPS控制;

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