Validation of quasi-linear turbulent transport models against plasmas with dominant electron heating for the prediction of ITER PFPO-1 plasmas

Nuclear Fushion

article

C.K. Kiefer¹  C. Angioni¹  G. Tardini¹  N. Bonanomi¹  B. Geiger¹  P. Mantica⁴  T. Pütterich¹  E. Fable¹  P.A. Schneider¹ 

[1] Max-Planck-Institut für Plasmaphysik;Ulm University;University of Wisconsin-Madison;Istituto per la Scienza e Tecnologia dei Plasmi

关键词: tokamak;    turbulent transport;    ITER prefusion power operation;    validationquasi-linear models;   

DOI  :  10.1088/1741-4326/abfc9c

来源: Institute of Physics Publishing Ltd.

【 摘 要 】

Kinetic profile predictions of ITER PFPO-1 plasmas require high accuracy in the central electron temperatures to be applied to the calculation of third harmonic electron cyclotron absorption. Correctly predicting the transition from L-mode to H-mode further requires precise estimates of the ion heat flux in the periphery of the plasma. Recent versions of the quasi-linear transport models TGLF and QuaLiKiz were tested against an extensive set of experimental results from ASDEX Upgrade (AUG) and JET-ILW, where the focus was put on AUG plasmas heated by ECRH. Spectra obtained from TGLF are compared to a set of linear gyrokinetic simulations performed with GKW. Electron and ion temperature profiles obtained with TGLF-SAT1geo show good agreement with the experimental profiles, but there is a slight tendency to underpredict centralT _e andT _i at high ratiosT _e/ T _i. QuaLiKiz yields reasonable results forT _e andT _i profiles in plasmas where the ion temperature gradient mode is dominant, but predicts a significantly too weak transport in the presence of dominant trapped electron modes in conditions of strong central electron heating.

【 授权许可】

Unknown