ELM control experiments in the KSTAR device
ELM control experiments in the KSTAR device
复制标题
KSTAR装置中的ELM控制实验
DOI：
10.1088/0029-5515/52/11/114011
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发表时间：
2012-11
期刊：
影响因子：
3.3
通讯作者：
Kwak, J. G.
中科院分区：
文献类型：
--
作者：
Park, H. K.;Na, Y. S.;Kim, W. C.;Kwak, J. G.
2011年的第四次KSTAR活动集中在通过各种方法进行的主动边缘局部模式（ELM）控制，例如非轴对称磁扰动，超音速分子束注入（SMBI），等离子体柱的垂直颠簸和边缘电子加热。分段式容器内控制线圈（IVCC）系统能够在顶部、中间和底部线圈之间施加具有不同相位的n × 2扰动场。n = 1扰动场的应用显示出理想的ELM抑制结果。等离子体柱的快速垂直颠簸实现了ELM起搏，并且观察到锁定到50 Hz垂直颠簸的ELM具有很高的锁相概率。一个新安装的SMBI系统被用于ELM控制和减轻ELM的状态是由优化的重复SMBI脉冲维持了几十个ELM周期。ELM行为的变化被认为是由于边缘电子加热，虽然ECH发射的影响需要补充分析。抑制/减轻ELM状态的ECEI图像与自然ELMy状态相比显示出明显的差异。正在进行进一步分析，以解释观察到的ELM控制结果。
The fourth KSTAR campaign in 2011 concentrated on active edge-localized mode (ELM) control by various methods such as non-axisymmetric magnetic perturbations, supersonic molecular beam injection (SMBI), vertical jogs of the plasma column and edge electron heating. The segmented in-vessel control coil (IVCC) system is capable of applying n ⩽ 2 perturbed field with different phasing among top, middle and bottom coils. Application of an n = 1 perturbed field showed a desirable ELM suppression result. Fast vertical jogs of the plasma column achieved ELM pace-making and ELMs locked to 50 Hz vertical jogs were observed with a high probability of phase locking. A newly installed SMBI system was used for ELM control and the state of mitigated ELMs was sustained by the optimized repetitive SMBI pulse for a few tens of ELM periods. A change in ELM behaviour was seen due to edge electron heating although the effect of ECH launch needs supplementary analyses. The ECEI images of suppressed/mitigated ELM states showed apparent differences when compared with natural ELMy states. Further analyses are ongoing to explain the observed ELM control results.
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影响因子：
3.3
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影响因子：
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影响因子：
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影响因子：
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影响因子：
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作者：
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