Fuel recycling feedback control via real-time boron powder injection in EAST with full metal wall

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外文摘要：A feedback control of fuel recycling via real-time boron powder injection,addressing the issue of continuously increasing recycling in long-pulse plasma discharges,has been successfully developed and implemented on EAST tokamak.The feedback control system includes four main parts:the impurity powder dropper(IPD),a diagnostic system measuring fuel recycling level represented by Dα emission,a plasma control system(PCS)implementing the Proportional Integral Derivative(PID)algorithm,and a signal converter connecting the IPD and PCS.Based on this control system,both active control and feedback control experiments have recently been performed on EAST with a full metal wall.The experimental results show that the fuel recycling can be gradually reduced to lower level as PCS control voltage increases.In the feedback control experiments,it is also observed that the Dα emission is reduced to the level below the target Dα value by adjusting boron injection flow rate,indicating successful implementation of the fuel recycling feedback control on EAST.This technique provides a new method for fuel recycling control of long pulse and high parameter plasma operations in future fusion devices.

外文关键词：

fuel recyclingfeedback controlboron powderEAST

作者：

汪哲、孙震、左桂忠、吴凯、黄耀、徐伟、黄明、周之泰、管艳红、邱昊天、Rajesh MAINGI、胡建生

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作者单位：

University of Science and Technology of China,Hefei 230026,People's Republic of China

Institute of Plasma Physics,Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031,People's Republic of China

Princeton Plasma Physics Laboratory,Princeton NJ 08540,United States of America

Institute of Energy,Hefei Comprehensive National Science Center,Hefei 230031,People's Republic of China

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出版年：

2024

DOI：

10.1088/2058-6272/ad811f

等离子体科学和技术(英文版)

中国科学院合肥物质科学研究所中国力学学会

等离子体科学和技术(英文版)

影响因子：0.297

ISSN：1009-0630

年,卷(期)：2024.26(12)