文献类型：期刊文献

英文题名：Extension of the KAEC code with quadratic kinetic particle compression: Numerical implementation and benchmark applications

作者：Ma, Z. J.[1];Yu, L. M.[1];Zhang, X. M.[1];Liu, Z. Y.[2];Jiang, P. Y.[3];Liu, S. Y.[4,5];Fu, G. Y.[4,5];Zheng, R.[1];Zhang, D. B.[1]

机构：[1]East China Univ Sci & Technol, Sch Phys, Shanghai 200237, Peoples R China;[2]Zhejiang Lab, Hangzhou 311121, Zhejiang, Peoples R China;[3]Max Planck Inst Plasma Phys, Boltzmannstr 2, D-85748 Garching, Germany;[4]Zhejiang Univ, Inst Fus Theory & Simulat, Hangzhou 310027, Zhejiang, Peoples R China;[5]Zhejiang Univ, Sch Phys, Hangzhou 310027, Zhejiang, Peoples R China

年份：2025

卷号：32

期号：10

外文期刊名：PHYSICS OF PLASMAS

收录：;EI(收录号：20254019272314);WOS:【SCI-EXPANDED(收录号:WOS:001588230600001)】；

基金：We thank Dr. Jian Bao for useful discussions. This work is supported by the National MCF Energy R&D Program of China (Grant No. 2019YFE03050001) and the National Natural Science Foundation of China (Grant No. 12375215).

语种：英文

外文关键词：Benchmarking - Codes (symbols) - Direct energy conversion - Equations of motion - Fusion reactions - Kinetic theory - Kinetics - Magnetic bubbles - Magnetic moments - Magnetoplasma - Plasma confinement - Plasma simulation

摘要：Energetic particles (EPs), primarily generated by external heating and fusion reactions, play a key role in magnetically confined plasmas. Their kinetic effects can destabilize toroidicity-induced Alfv & eacute;n eigenmodes (TAEs). To capture the EP contribution, the quadratic kinetic particle compression (QKPC) term is formulated based on the gyrokinetic theory. The gyrokinetic equation is derived in terms of the invariants of motion: energy E, magnetic moment mu, and toroidal canonical momentum P(phi )and solved using numerically computed orbits of confined particles. This work extends the eigenvalue code KAEC [Yu et al., Phys. Plasmas 16, 072505 (2009)], originally developed without EP drive, by incorporating the QKPC term into the Alfv & eacute;n wave equation. The extended model enables nonperturbative calculation of TAEs, including finite drift orbit width and finite Larmor radius effects for both passing and trapped EPs. The developed code has been successfully verified, including linear simulations of EP-driven TAEs in good agreement with established codes. (c) 2025 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International (CC BY-NC-ND) license