Resonant magnetic perturbation experiments on MAST using external and internal coils for ELM control
Resonant magnetic perturbation experiments on MAST using external and internal coils for ELM control
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DOI：
10.1088/0029-5515/50/3/034008
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发表时间：
2010-03
期刊：
影响因子：
3.3
通讯作者：
A. Kirk;E. Nardon;R. Akers;M. Becoulet;G. De Temmerman;B. Dudson;B. Hnat;Y.Q. Liu;R. Martín-R.-Martí
中科院分区：
文献类型：
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作者：
A. Kirk;E. Nardon;R. Akers;M. Becoulet;G. De Temmerman;B. Dudson;B. Hnat;Y.Q. Liu;R. Martín-R.-Martí
实验已进行MAST使用外部（n = 1，2）和内部（n = 3）的谐振磁扰动（RMP）线圈。尽管真空模型表明，任一组线圈都可以产生一个区域（Δ λ pol > 0.17），其奇里科夫参数大于1，比DIII-D中与ELM抑制相关的区域更宽，但ELM抑制尚未实现。虽然还没有实现完全的ELM抑制，但RMP的应用在ELM自由H模式周期（n = 3）中触发了ELM，并且在有规律的ELM-ing放电（n = 2，3）中增加了ELM频率。此外，在n = 3的配置中的RMP的应用产生了很大的变化，在L模式放电的边缘湍流。
Experiments have been performed on MAST using both external (n = 1, 2) and internal (n = 3) resonant magnetic perturbation (RMP) coils. ELM suppression has not been achieved even though vacuum modelling shows that either set of coils can produce a region (ΔΨpol > 0.17), for which the Chirikov parameter is greater than 1, wider than that correlated with ELM suppression in DIII-D. Although complete ELM suppression has not been achieved, application of RMPs has triggered ELMs in ELM free H-mode periods (n = 3) and increased the ELM frequency in regularly ELM-ing discharges (n = 2, 3). In addition, the application of RMPs in an n = 3 configuration has produced large changes to the edge turbulence in L-mode discharges.