Design of real-time feedback control of vertical growth rate on EAST

• 作者: Na-Na Bao Yao Huang Bing-Jia Xiao Qi-Ping Yuan Zheng-Ping Luo Yue-Hang Wang Shu-Liang Chen
• 来源期刊: 核技术（英文版）
• 年，卷（期）: 2021,（7）
• 所属期刊栏目: NUCLEAR ELECTRONICS AND INSTRUMENTATION
• 页码范围: 99-107
• 页数: 9页
• 语种: 英文

摘要

Real-time feedback control of vertical growth rate,called gamma control,has been successfully applied to experimental advanced superconducting tokamak(EAST).In this paper,a new gamma control method is proposed to regulate the vertical growth rate,which is an estimator of plasma vertical instability.Thus,the gamma controller can be utilized to keep the tokamak plasma away from its unstable boundary.In this work,the main devel-opment process includes three steps:(1)real-time imple-mentation of model-based vertical growth rate calculation,taking advantage of GPU parallel computing capability,(2)design of plasma shape response for dynamic shape control using a slight modification to the plasma boundary,and(3)development of a gamma control algorithm integrated into the EAST plasma control system(PCS).The gamma con-trol was experimentally verified in the EAST 2019 exper-iment campaign.It is shown that the time evolution of the real-time vertical growth rate agrees with the target value,indicating that the real-time vertical growth rate can be regulated by gamma control.