The Construction of Plasma Density Feedback Control System on J-TEXT Tokamak

KE Xin (柯新); CHEN Zhipeng (陈志鹏); BA Weigang (巴为刚); SHU Shuangbao (舒双宝); GAO Li (高丽); ZHANG Ming (张明); ZHUANG Ge (庄革)

doi:10.1088/1009-0630/18/2/20

Plasma Science and Technology > 2016 > 18(2): 211-216. > DOI: 10.1088/1009-0630/18/2/20

KE Xin (柯新), CHEN Zhipeng (陈志鹏), BA Weigang (巴为刚), SHU Shuangbao (舒双宝), GAO Li (高丽), ZHANG Ming (张明), ZHUANG Ge (庄革). The Construction of Plasma Density Feedback Control System on J-TEXT Tokamak[J]. Plasma Science and Technology, 2016, 18(2): 211-216. DOI: 10.1088/1009-0630/18/2/20

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The Construction of Plasma Density Feedback Control System on J-TEXT Tokamak

1State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China 2School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, China

Funds: supported by the National Magnetic Confinement Fusion Science Program (Nos. 2014GB103001 and 2013GB106001) and National Natural Science Foundation of China (Nos. 11305070 and 11105028)

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Received Date: February 09, 2015

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Abstract

Abstract

The plasma density feedback control system (PDFCS) has been established on the Joint Texas Experimental Tokamak (J-TEXT) for meeting the need for an accurate plasma density in physical experiments. It consists of a density measurement subsystem, a feedback control subsystem and a gas puffing subsystem. According to the characteristic of the gas puffing system, a voltage amplitude control mode has been applied in the feedback control strategy, which is accomplished by the proportion, integral and differential (PID) controller. In this system, the quantity calibration of gas injection, adjusted responding to the change of the density signal, has been carried out. Some experimental results are shown and discussed.
- density,
- feedback control,
- tokamak,
- PID

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References

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