Design of Control System for Suppression of Neoclassical Tearing Modes with Electron Cyclotron Heating and Current Drive on EAST
Design of Control System for Suppression of Neoclassical Tearing Modes with Electron Cyclotron Heating and Current Drive on EAST
复制标题
DOI：
10.13182/fst15-138
复制
发表时间：
2016-07
影响因子：
0.9
通讯作者：
Y. Zhang;X. G. Wang;X. J. Wang;H. Hu;Y. Liu;A. Ti;L. Xu;X. Zhang;East Team
中科院分区：
文献类型：
--
作者：
Y. Zhang;X. G. Wang;X. J. Wang;H. Hu;Y. Liu;A. Ti;L. Xu;X. Zhang;East Team
本文讨论了实验先进超导托卡马克（EAST）的一种控制系统，该系统利用电子回旋加热和电流驱动来抑制新经典撕裂模（NTMs）（3/2和2/1）。它允许磁岛被检测和定位在真实的时间和EC束被沉积在岛的位置上，通过逐步调整的可操纵的发射镜。利用温度扰动识别模态特征，实现孤岛的实时定位。通过对非线性孤岛生长过程的模拟，确定了控制系统设计所需的参数。尽管类似的工作已经在许多其他设备上完成，但这是在EAST上的首次尝试。
Abstract This paper discusses a control system for the Experimental Advanced Superconducting Tokamak (EAST) that suppresses neoclassical tearing modes (NTMs) (3/2 and 2/1) by applying electron cyclotron (EC) heating and current drive. It allows the magnetic island to be detected and localized in real time and the EC beam to be deposited exactly on the island position by stepwise tuning of the steerable launch mirror. The mode features are identified with temperature perturbation to develop the algorithm for real-time island location. The necessary parameters for the design of the control system are discussed and determined based on simulation of the nonlinear island growth of NTMs with application of EC current drive. Although similar work has been done on many other devices, this is the first attempt on EAST.