Optimal calculation of electron cyclotron current drive in HL-3 tokamak

doi:10.16568/j.0254-6086.202304012

Abstract

Abstract: The integrated simulation and experimental analysis platform OMFIT is used to research the driving efficiency of electron cyclotron current drive (ECCD) in HL-3 tokamak. The toroidal and poloidal angle of ECCD system antenna, electron density, electron temperature and the plasma magnetic field that affect the driving efficiency and current profile location are analyzed. The study found that when the toroidal angle is 185°~200° and poloidal angle is 85°~105°, the driving efficiency is relatively high, and driving current profile located in normalized radius 0.4~0.6. It is also found that electron temperature significantly affects the ECCD efficiency, and the drive current increases with increase of the electron temperature, at the weak magnetic field side, the normalized radius decreases and drive current increases with reduction of the magnetic field (1.9~2.2T).

Key words: ECCD, HL-3 tokamak, Integrated simulation

摘要： 利用托卡马克集成模拟与实验分析平台(OMFIT)开展了 HL-3 装置 ECCD 驱动效率的研究，分析了 ECCD 系统发射天线在等离子体环向与极向所成的角度、等离子体密度、电子温度和磁场对驱动电流大小和位置的影响。研究发现，环向角和极向角范围分别为 185°~200°、85°~105°时，ECCD 电流驱动效率比较高，驱动电流可以覆盖到归一化半径 0.4~0.6。研究还发现，电子温度显著影响 ECCD 电流驱动效率，温度越高驱动电流越大；在弱场侧磁场强度(1.9~2.2T)越小，驱动电流分布归一化半径越小和驱动电流越大。

关键词: 电子回旋电流驱动, HL-3 装置, 集成模拟

CLC Number:

TL62+ 4

WANG Zhuo , SUN Ai-ping , WANG Yuan-zhen , LI Zheng-ji. Optimal calculation of electron cyclotron current drive in HL-3 tokamak [J]. Nuclear Fusion and Plasma Physics, 2023, 43(4): 444-449.

王卓, 孙爱萍, 王元震, 李正吉 . HL-3 装置电子回旋电流驱动的优化计算 [J]. 核工业西南物理研究院, 2023, 43(4): 444-449.

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