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首页> 外文期刊>Plasma physics and controlled fusion >Fully pellet-controlled ELMs sustaining identical pedestal conditions of natural ELMy H-mode in ASDEX Upgrade
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Fully pellet-controlled ELMs sustaining identical pedestal conditions of natural ELMy H-mode in ASDEX Upgrade

机译：完全由颗粒控制的ELM在ASDEX升级中保持自然ELMy H模式的相同基座条件

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摘要

For identical edge pedestal conditions in plasmas with gas puff and with pellet injection, edge localized mode (ELM) mitigation during fully pellet-controlled ELMy H-modes has been demonstrated. When the ELM frequency is set to the pellet frequency, the ELM energy losses are significantly reduced at fixed pedestal collisionality, while pellets only weakly enhance the ELM loss power. The ELM affected region of the density profile is reduced by pellet injection, while the temperature perturbation profile does not change significantly. For constant source particle flux into the plasma edge at the same pedestal parameters, the reduction in convective losses per ELM during pellet-induced ELMs is balanced by increased ELM frequency and pellet fuelling of the pedestal region.
机译：对于带有吹气和颗粒注入的血浆中相同的边缘基座条件，已经证明了在完全颗粒控制的ELMy H模式下的边缘局部模式（ELM）缓解。当将ELM频率设置为颗粒频率时，在固定的基座碰撞情况下，ELM能量损失会显着降低，而颗粒只会微弱地提高ELM损失功率。颗粒注入可降低密度分布对ELM的影响，而温度扰动分布不会显着变化。为了在相同的基座参数下使恒定的源粒子通量进入等离子体边缘，在颗粒诱导的ELM期间，每个ELM的对流损失的减少可通过增加ELM频率和基座区域的颗粒燃料来平衡。

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