Electromagnetic Modeling of the Passive Stabilization Loop at EAST

A passive stabilization loop （PSL） has been designed and manufactured in order to enhance the control of vertical instability and accommodate the new stage for high-performance plasma at EAST. Eddy currents are induced by vertical displacement events （VDEs） and disrup- tion, which can produce a magn...

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Bibliographic Details
Published inPlasma science & technology Vol. 14; no. 9; pp. 855 - 858
Main Author 戢翔 宋云涛 武松涛 王志滨 沈光 刘旭峰 曹磊 周自波 彭学兵 王成昊
Format Journal Article
LanguageEnglish
Published 01.09.2012
Subjects
ANSYS软件
VDEs
不稳定性
垂直位移
电磁建模
稳定回路
等离子体
结构设计
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ISSN1009-0630
DOI10.1088/1009-0630/14/9/16

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Summary:A passive stabilization loop （PSL） has been designed and manufactured in order to enhance the control of vertical instability and accommodate the new stage for high-performance plasma at EAST. Eddy currents are induced by vertical displacement events （VDEs） and disrup- tion, which can produce a magnetic field to control the vertical instability of the plasma in a short timescale. A finite element model is created and meshed using ANSYS software. Based on the simulation of plasma VDEs and disruption, the distribution and decay curve of the eddy currents on the PSL are obtained. The largest eddy current is 200 kA and the stress is 68 MPa at the outer current bridge, which is the weakest point of the PSL because of the eddy currents and the magnetic fields. The analysis results provide the supporting data for the structural design.
Bibliography:A passive stabilization loop （PSL） has been designed and manufactured in order to enhance the control of vertical instability and accommodate the new stage for high-performance plasma at EAST. Eddy currents are induced by vertical displacement events （VDEs） and disrup- tion, which can produce a magnetic field to control the vertical instability of the plasma in a short timescale. A finite element model is created and meshed using ANSYS software. Based on the simulation of plasma VDEs and disruption, the distribution and decay curve of the eddy currents on the PSL are obtained. The largest eddy current is 200 kA and the stress is 68 MPa at the outer current bridge, which is the weakest point of the PSL because of the eddy currents and the magnetic fields. The analysis results provide the supporting data for the structural design.
passive stabilization loop （PSL）, electromagnetic analysis, structural analysis, VDEs, disruption
JI Xiang , SONG Yuntao , WU Songtao , WANG Zhibin , SHEN Guang , LIU Xufeng , CAO Lei , ZHOU Zibo , PENG Xuebing , WANG Chenghao Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
34-1187/TL
ISSN:1009-0630
DOI:10.1088/1009-0630/14/9/16