Non-linear modeling of the plasma response to RMPs in ASDEX Upgrade

0500453 - ÚFP 2019 RIV AT eng J - Journal Article
Orain, F. - Hoelzl, M. - Viezzer, E. - Dunne, M. - Becoulet, M. - Cahyna, Pavel - Huijsmans, G.T.A. - Morales, J. - Willensdorfer, M. - Suttrop, W. - Kirk, A. - Pamela, S. - Guenter, P. - Lackner, K. - Strumberger, E. - Lessig, A.
Non-linear modeling of the plasma response to RMPs in ASDEX Upgrade.
Nuclear Fusion. Roč. 57, č. 2 (2017), č. článku 022013. ISSN 0029-5515. E-ISSN 1741-4326
R&D Projects: GA ČR(CZ) GA16-24724S; GA MŠMT(CZ) 8D15001
EU Projects: European Commission(XE) 633053 - EUROfusion
Institutional support: RVO:61389021
Keywords : mhd * rmp * elm * kink amplification * density pumpout * ASDEX Upgrade * non-linear modeling
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 4.057, year: 2017
https://iopscience.iop.org/article/10.1088/0029-5515/57/2/022013/meta

The plasma response to resonant magnetic perturbations (RMPs) in ASDEX Upgrade is modeled with the non-linear resistive MHD code JOREK, using input profiles that match those of the experiments as closely as possible. The RMP configuration for which edge localized modes are best mitigated in experiments is related to the largest edge kink response observed near the X-point in modeling. On the edge resonant surfaces q = m/n, the coupling between the kink component (m > nq) and the m resonant component is found to induce the amplification of the resonant magnetic perturbation. The ergodicity and the 3D-displacement near the X-point induced by the resonant amplification can only partly explain the density pumpout observed in experiments.
Permanent Link: http://hdl.handle.net/11104/0292516