期刊论文

Study on the Fast-wave Current Drive in the Ion Cyclotron Range of Frequencies in Tokamak

中文

核科学与工程

0258-0918

2018

38

5

779-783

10.3969/j.issn.0258-0918.2018.05.008

201410555012:国家级大学生创新创业训练计划项目 2015JJ4044:湖南省自然科学基金

本校为第一机构

在现在和未来的先进托卡马克装置中,离子回旋频率范围内的快波电流驱动都是一种不可或缺的非感应电流驱动方式。本文利用全波方程得到波电场和磁场分布,代入扩散系数并求解Fokker- Planck方程,采用自行编写的程序对快波在等离子体中的电子吸收功率和驱动电流等物理量进行数值求解。初步研究了快波频率和等离子体温度对电子吸收功率及电流驱动效率的影响,结果显示快波能传播到托卡马克等离子体的中心区域并被电子吸收;快波频率对电子吸收快波功率有显著的影响,在70~100 MHz波频率范围内电子对快波吸收效果较好,能有效驱动电流;另外在该频段内随着等离子体温度的升高,电子吸收效果变差。

The fast-wave current drive in the ion cyclotron range is a critical method of non-inductive current drive. In this paper,Quasi-linear diffusion coefficient of electrons is calculated by wave field obtained by the full-wave method,and the power absorption of electron and current drive in the ion cyclotron frequency range are simulated numerically. The effects of plasma temperature and fast wave frequency on power absorption of electron and current drive efficiency are studied. The simulation results indicate that the fast wave can propagates to the center of the plasma and will be absorbed by ...