Design of a multi-voltage probe system for ICRF antenna coupling resistance measurement on EAST

Zhen PENG (彭振); Gen CHEN (陈根); Jianhua WANG (王健华); Yanping ZHAO (赵燕平); Yuzhou MAO (毛玉周)

doi:10.1088/2058-6272/aba186

Plasma Science and Technology > 2020 > 22(10): 105601. > DOI: 10.1088/2058-6272/aba186

Zhen PENG (彭振), Gen CHEN (陈根), Jianhua WANG (王健华), Yanping ZHAO (赵燕平), Yuzhou MAO (毛玉周). Design of a multi-voltage probe system for ICRF antenna coupling resistance measurement on EAST[J]. Plasma Science and Technology, 2020, 22(10): 105601. DOI: 10.1088/2058-6272/aba186

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Design of a multi-voltage probe system for ICRF antenna coupling resistance measurement on EAST

¹ Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
² University of Science and Technology of China, Hefei 230026, People's Republic of China
³ Hangzhou Dianzi University, Hangzhou 310018, People's Republic of China

Funds: This work was supported by: (1) China Fusion Engineering Experimental Reactor General Integration and Engineering Design (No. 2017YFE0300503); (2) National Natural Science Foundation of China (No. 11775258); (3) the Comprehensive Research Facility for Fusion Technology Program of China (No. 2018-000052-73-01-001228).

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Received Date: April 18, 2020
Revised Date: June 26, 2020
Accepted Date: June 27, 2020

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Abstract

A multi-voltage probe array system is designed to measure the coupling resistance of an ion cyclotron resonance frequency antenna. In the process of the antenna coupling resistance data extraction, the minimization algorithm, the original Levenberg–Marquardt algorithm, is replaced by the Broyden–Fletcher–Goldfarb–Shanno algorithm to achieve more stable and accurate results. Moreover, a simple model of the multi-voltage probe array was applied to simulate the performance of the Kalman filter, and to optimize the distance and position of the probes and probe number to mitigate the influence of the system noise on the rebuilt results. During the EAST experiment in 2019, a four-voltage probe array was applied to measure the coupling resistance of line 6 during high confined mode discharge. The measurement results by the multi- voltage probe array system and the voltage/current probe pair show a good agreement.
- EAST,
- ICRF,
- BFGS algorithm,
- multi-voltage probe,
- coupling resistance

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Design of a multi-voltage probe system for ICRF antenna coupling resistance measurement on EAST

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