Resonant magnetic perturbation experiments on MAST using external and internal coils for ELM control

A. Kirk, E. Nardon, R. Akers, M. Bécoulet, G. De Temmerman, B. Dudson, B. Hnat, Y.Q. Liu, R. Martin, P. Tamain, D. Taylor

doi:10.1088/0029-5515/50/3/034008

Resonant magnetic perturbation experiments on MAST using external and internal coils for ELM control

DOI Web Site Web Site 被引用文献3件

書誌事項

公開日: 2010-02-23

権利情報

https://iopscience.iop.org/page/copyright
https://iopscience.iop.org/info/page/text-and-data-mining

DOI

10.1088/0029-5515/50/3/034008

公開者: IOP Publishing

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説明

<jats:p>Experiments have been performed on MAST using both external (<jats:italic>n</jats:italic> = 1, 2) and internal (<jats:italic>n</jats:italic> = 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 (ΔΨ<jats:sub>pol</jats:sub> > 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 (<jats:italic>n</jats:italic> = 3) and increased the ELM frequency in regularly ELM-ing discharges (<jats:italic>n</jats:italic> = 2, 3). In addition, the application of RMPs in an <jats:italic>n</jats:italic> = 3 configuration has produced large changes to the edge turbulence in L-mode discharges.</jats:p>