Experimental conditions to suppress edge localised modes by magnetic perturbations in the ASDEX Upgrade tokamak

@article{Suttrop2018ExperimentalCT,
  title={Experimental conditions to suppress edge localised modes by magnetic perturbations in the ASDEX Upgrade tokamak},
  author={Wolfgang Suttrop and A. Kirk and V. Bobkov and Marco Cavedon and Mike G Dunne and R. M. McDermott and H. Meyer and Raffi Nazikian and Carlos Paz-Soldan and David Anthony Ryan and Eleonora Viezzer and Matthias Willensdorfer},
  journal={Nuclear Fusion},
  year={2018},
  volume={58}
}
Access conditions for full suppression of edge localised modes (ELMs) by magnetic perturbations (MP) in low density high confinement mode (H-mode) plasmas are studied in the ASDEX Upgrade tokamak. The main empirical requirements for full ELM suppression in our experiments are: 1. The poloidal spectrum of the MP must be aligned for best plasma response from weakly stable kink-modes, which amplify the perturbation, 2. The plasma edge density must be below a critical value, m−3. The edge… 

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