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Validation of quasi-linear turbulent transport models against plasmas with dominant electron heating for the prediction of ITER PFPO-1 plasmas
Nuclear Fusion ( IF 3.3 ) Pub Date : 2021-05-27 , DOI: 10.1088/1741-4326/abfc9c
C.K. Kiefer 1, 2 , C. Angioni 1 , G. Tardini 1 , N. Bonanomi 1 , B. Geiger 1, 3 , P. Mantica 4 , T. Ptterich 1 , E. Fable 1 , P.A. Schneider 1 , ASDEX Upgrade Team , EUROfusion MST1 Team , JET Contributors
Affiliation  

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 central T e and T i at high ratios T e/T i. QuaLiKiz yields reasonable results for T e and T 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.



中文翻译:

验证准线性湍流输运模型对抗电子加热占主导地位的等离子体以预测 ITER PFPO-1 等离子体

ITER PFPO-1 等离子体的动力学剖面预测需要中心电子温度的高精度才能应用于三次谐波电子回旋吸收的计算。正确预测从 L 模式到 H 模式的转变还需要精确估计等离子体外围的离子热通量。准线性输运模型 TGLF 和 QuaLiKiz 的最新版本针对来自 ASDEX Upgrade (AUG) 和 JET-ILW 的大量实验结果进行了测试,其中重点放在由 ECRH 加热的 AUG 等离子体上。从 TGLF 获得的光谱与使用 GKW 执行的一组线性陀螺动力学模拟进行比较。使用 TGLF-SAT1geo 获得的电子和离子温度曲线与实验曲线显示出很好的一致性,但有轻微的低估中心T eT i处于高比率T e / T i。QuaLiKiz对离子温度梯度模式占主导地位的等离子体中的T eT i分布产生合理的结果,但预测在强中心电子加热条件下存在主要俘获电子模式时传输明显太弱。

更新日期:2021-05-27
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