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

Nuclear Fushion

article

F. Orain¹  M. Hölzl¹  E. Viezzer¹  M. Dunne¹  M. Bécoulet²  P. Cahyna³  G.T.A. Huijsmans²  J. Morales⁴  M. Willensdorfer¹  W. Suttrop¹  A. Kirk⁵  S. Pamela⁵  S. Günter¹  K. Lackner¹  E. Strumberger¹  A. Lessig¹ 

[1] Max-Planck-Institut für Plasmaphysik;CEA-IRFM;Institute of Plasma Physics CAS;Ecole Polytechnique Fédérale de Lausanne ,(EPFL), Swiss Plasma Center;CCFE, Culham Science Centre

关键词: MHD;    RMP;    ELM;    kink amplification;    density pumpout;    ASDEX Upgrade;    non-linear modeling;   

DOI  :  10.1088/0029-5515/57/2/022013

来源: Institute of Physics Publishing Ltd.

【 摘 要 】

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 surfacesq   =   m / n , the coupling between the kink component ( m   >   nq ) and themresonant 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.

【 授权许可】

Unknown