MAS: A versatile Landau-fluid eigenvalue code for plasma stability analysis in general geometry

Bao, Jian; Zhang, Wenlu; Li, Ding; Lin, Zhihong; Dong, Ge; Liu, Chang; Xie, Huasheng; Meng, Guo; Cheng, Junyi; Dong, Chao; Cao, Jintao

doi:10.1088/1741-4326/acd1a0

Title: MAS: A versatile Landau-fluid eigenvalue code for plasma stability analysis in general geometry

Journal Article · Tue May 02 00:00:00 EDT 2023 · Nuclear Fusion

DOI:https://doi.org/10.1088/1741-4326/acd1a0· OSTI ID:1974436

Bao, Jian ^[1];

^[2]; Li, Ding ^[2]; Lin, Zhihong ^[3];

^[4];

^[5]; Xie, Huasheng ^[6];

^[7]; Cheng, Junyi ^[8]; Dong, Chao ^[1]; Cao, Jintao ^[1]

Chinese Academy of Sciences (CAS), Beijing (China). Inst. of Physics. Beijing National Lab. for Condensed Matter Physics (BNLCP-CAS) and Key Laboratory of Soft Matter Physics; University of Chinese Academy of Sciences, Beijing (China)
Chinese Academy of Sciences (CAS), Beijing (China). Inst. of Physics. Beijing National Lab. for Condensed Matter Physics (BNLCP-CAS) and Key Laboratory of Soft Matter Physics; University of Chinese Academy of Sciences, Beijing (China); Songshan Lake Materials Laboratory, Guangdong (China)
Univ. of California, Irvine, CA (United States)
Energy Singularity Co., Ltd., Shanghai (China)
Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
Hebei Key Laboratory of Compact Fusion, Langfang (China); ENN Science and Technoloogy Development Co., Ltd., Langfang (China)
Max Planck Institute for Plasma Physics, Greifswald (Germany)
Univ. of Colorado, Boulder, CO (United States)

We have developed a new global eigenvalue code, Multiscale Analysis for plasma Stabilities (MAS), for studying plasma problems with wave toroidal mode number (n) and frequency (ω) in a broad range of interest in general tokamak geometry, based on a five-field Landau-fluid description of thermal plasmas. Beyond keeping the necessary plasma fluid response, we further retain the important kinetic effects including diamagnetic drift, ion finite Larmor radius, finite parallel electric field (E||), ion and electron Landau resonances in a self-consistent and non-perturbative manner without sacrificing the attractive efficiency in computation. The physical capabilities of the code are evaluated and examined in the aspects of both theory and simulation. In theory, the comprehensive Landau-fluid model implemented in MAS can be reduced to the well-known ideal MHD model, electrostatic ion-fluid model, and drift-kinetic model in various limits, which clearly delineates the physics validity regime. In simulation, MAS has been well benchmarked with theory and other gyrokinetic and kinetic-MHD hybrid codes in a manner of adopting the unified physical and numerical framework, which covers the kinetic Alfv\'en wave (KAW), ion sound wave (ISW), low-n kink, high-n ion temperature gradient mode (ITG) and kinetic ballooning mode (KBM). Moreover, MAS is successfully applied to model the Alfv\'en eigenmode (AE) activities in DIII-D discharge #159243, which faithfully captures the frequency sweeping of reversed shear Alfv\'en eigenmode (RSAE), the tunneling damping of toroidal Alfv\'en eigenmode (TAE), as well as the polarization characteristics of kinetic beta-induced Alfv\'en eigenmode (KBAE) and beta-induced Alfv\'en-acoustic eigenmode (BAAE) being consistent with former gyrokinetic theory and simulation. With respect to the key progress contributed to the community, MAS has the advantage of combining rich physics ingredients, realistic global geometry and high computation efficiency together for plasma stability analysis in linear regime.

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Research Organization:: Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)

Sponsoring Organization:: USDOE; National MCF Energy R&D Program; National Natural Science Foundation of China (NSFC); Chinese Academy of Sciences (CAS)

Grant/Contract Number:: AC02-09CH11466; 2018YFE0304100; 2017YFE0301300; 12275351; 11905290; 11835016; Y9K5011R21

OSTI ID:: 1974436

Journal Information:: Nuclear Fusion, Vol. 63, Issue 7; ISSN 0029-5515

Publisher:: IOP ScienceCopyright Statement

Country of Publication:: United States

Language:: English

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