Simulation of helicon wave current drive on the Experimental Advanced Superconducting Tokamak under high poloidal beta scenarios

被引：0

作者：

Zi, Daozheng ^{[1
]}

Cheng, Zehou ^{[1
]}

Sun, Shuheng ^{[1
]}

Li, Miaohui ^{[2
]}

Li, Xinxia ^{[1
]}

机构：

[1] Univ South China, Sch Nucl Sci & Technol, Hengyang 421008, Peoples R China

[2] Chinese Acad Sci, Hefei Inst Phys Sci, Inst Plasma Phys, Hefei 230031, Peoples R China

来源：

FUSION ENGINEERING AND DESIGN | 2025年 / 215卷

基金：

中国国家自然科学基金;

关键词：

Helicon wave; Current drive; High poloidal beta; EAST; EFFICIENCY;

D O I：

10.1016/j.fusengdes.2025.114968

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

The high poloidal beta (beta p) scenario serves as a promising operational mode for tokamak fusion reactors. In this paper, the helicon wave current drive under high beta p scenarios on the EAST device is studied numerically. Theoretical analysis based on the fast wave dispersion relation indicates that a higher wave frequency enhances wave power absorption in the device. GENRAY/CQL3D simulations indicate that an effective on-axis plasma current drive can generally be achieved. Scans of plasma parameters reveal that lower plasma density and higher plasma temperature contribute to higher current drive efficiency. Moreover, a scheme of combined current drive using lower hybrid waves and helicon waves in the device is analyzed, resulting in significant complementarity in the current drive profile and a positive synergistic effect on the net current drive. This work is expected to provide a new perspective for the next stage of EAST operations.

引用

页数：6