基于频散关系的 EXL-50U 球形托卡马克中的离子回旋波加热模拟

IF 1.6 3区物理与天体物理 Q3 PHYSICS, FLUIDS & PLASMAS

Plasma Science & Technology Pub Date : 2023-11-16 DOI:10.1088/2058-6272/ad0d53

Haojie Ma, Huasheng Xie, Bo Li

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引用次数: 0

摘要

本研究调查了 EXL-50U 球形托卡马克氢等离子体中离子回旋频率范围（ICRF）加热的单程吸收（SPA）。一维全波代码证实了动力学弥散方程的可靠性，并讨论了基于动力学弥散方程的 Porkolab 简化 SPA 理论模型的适用性。模拟研究了基频和二次谐波频率的加热效应。结果表明，根据 EXL-50U 设备的设计参数，二次谐波加热的 SPA 为 63%，而基波加热的 SPA 为 13%。此外，0.9 T 时的最佳注入频率为 23 MHz，1.2 T 时为 31 MHz。天线的波矢量平行于磁场，其值为 k∥ = 7.5 m-1，位于最佳加热区域内。模拟结果表明，ICRF 加热系统可以在 EXL-50U 的离子加热中发挥重要作用。

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Simulation of ion cyclotron wave heating in the EXL-50U spherical tokamak based on dispersion relations

This study investigates the single-pass absorption (SPA) of ion cyclotron range of frequency (ICRF) heating in hydrogen plasma of the EXL-50U spherical tokamak, which is an upgraded device of the EXL-50 with a central solenoid and a stronger magnetic field. The reliability of the kinetic dispersion equation is confirmed by the one-dimensional full-wave code, and the applicability of Porkolab’s simplified theoretical SPA model is discussed based on the kinetic dispersion equation. Simulations are conducted to investigate the heating effects of the fundamental and second harmonic frequencies. The results indicate that with the design parameters of the EXL-50U device, the SPA for second harmonic heating is 63%, while the SPA for fundamental heating is 13%. Additionally, the optimal injection frequencies are 23 MHz at 0.9 T and 31 MHz at 1.2 T. The wave vector of the antenna parallel to the magnetic field, with a value of k∥ = 7.5 m−1, falls within the optimal heating region. Simulations reveal that the ICRF heating system can play an important role in the ion heating of the EXL-50U.

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来源期刊

Plasma Science & Technology 物理-物理：流体与等离子体

CiteScore

3.10

自引率

11.80%

发文量

3773

审稿时长

3.8 months

期刊介绍： PST assists in advancing plasma science and technology by reporting important, novel, helpful and thought-provoking progress in this strongly multidisciplinary and interdisciplinary field, in a timely manner. A Publication of the Institute of Plasma Physics, Chinese Academy of Sciences and the Chinese Society of Theoretical and Applied Mechanics.