ICRF antenna impedance measurements with voltage and current probes on EAST

J. H. Wang; G. Chen; Y. P. Zhao; Y. Z. Mao; S. Yuan; X. J. Zhang; J. M. Bernard; G. Lombard; W. Helou; Z. Chen; G. Urbanczyk; C. M. Qin; Y. Cheng; H. Yang; J. H. Zhang; Y. Q. Yang; K. Zhang; S. Q. Ju; X. Deng; B. N. Wan; X. Z. Gong; J. G. Li; L. Q. Hu; Y. T. Song

doi:10.1016/j.fusengdes.2017.08.018

ICRF antenna impedance measurements with voltage and current probes on EAST

J. H. Wang
, G. Chen
, Y. P. Zhao
, Y. Z. Mao
, S. Yuan
, X. J. Zhang
, J. M. Bernard
, G. Lombard
, W. Helou
, Z. Chen
, G. Urbanczyk
, C. M. Qin
, Y. Cheng
, H. Yang
, J. H. Zhang
, Y. Q. Yang
, K. Zhang
, S. Q. Ju
, X. Deng
, B. N. Wan

X. Z. Gong, J. G. Li, L. Q. Hu, Y. T. Song

School of Electrical Engineering

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

A new set of measurement system on the Experimental Advanced Superconducting Tokamak (EAST), based on voltage and current probes, is installed on transmission line between matching system and ion cyclotron range of frequencies antenna to measure the antenna input impedance. The data can be used for impedance-matching points optimizing, as well as coupling coefficient assessment by deducing the antenna coupling resistance from antenna input impedance. The measurement error of amplitude and phase difference show distinct impact on the coupling resistance. Generally, the amplitude measurement error has a small impact on coupling resistance, while the phase measurement error significantly affects the coupling resistance. Instead of using phase detectors, phases can be extract from the power measurements. Thus, the antenna input impedance and coupling resistance can be deduced from the amplitude of voltage probe, amplitude of current probe, as well as the antenna feeding power. on previous experiments, the impedance measurement technique based on voltage probes array is utilized to evaluate coupling resistances. In EAST 2016 campaign, the load coupling resistance calculated by using such two techniques were detected and the results showed agreement.

Original language	English
Pages (from-to)	196-203
Number of pages	8
Journal	Fusion Engineering and Design
Volume	122
DOIs	https://doi.org/10.1016/j.fusengdes.2017.08.018
State	Published - Nov 2017

Keywords

Antenna impedance
EAST
Error
ICRF
Probe

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10.1016/j.fusengdes.2017.08.018

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Wang, J. H., Chen, G., Zhao, Y. P., Mao, Y. Z., Yuan, S., Zhang, X. J., Bernard, J. M., Lombard, G., Helou, W., Chen, Z., Urbanczyk, G., Qin, C. M., Cheng, Y., Yang, H., Zhang, J. H., Yang, Y. Q., Zhang, K., Ju, S. Q., Deng, X., ... Song, Y. T. (2017). ICRF antenna impedance measurements with voltage and current probes on EAST. Fusion Engineering and Design, 122, 196-203. https://doi.org/10.1016/j.fusengdes.2017.08.018

@article{e6a8ff660a9141b38945365b239bab94,

title = "ICRF antenna impedance measurements with voltage and current probes on EAST",

abstract = "A new set of measurement system on the Experimental Advanced Superconducting Tokamak (EAST), based on voltage and current probes, is installed on transmission line between matching system and ion cyclotron range of frequencies antenna to measure the antenna input impedance. The data can be used for impedance-matching points optimizing, as well as coupling coefficient assessment by deducing the antenna coupling resistance from antenna input impedance. The measurement error of amplitude and phase difference show distinct impact on the coupling resistance. Generally, the amplitude measurement error has a small impact on coupling resistance, while the phase measurement error significantly affects the coupling resistance. Instead of using phase detectors, phases can be extract from the power measurements. Thus, the antenna input impedance and coupling resistance can be deduced from the amplitude of voltage probe, amplitude of current probe, as well as the antenna feeding power. on previous experiments, the impedance measurement technique based on voltage probes array is utilized to evaluate coupling resistances. In EAST 2016 campaign, the load coupling resistance calculated by using such two techniques were detected and the results showed agreement.",

keywords = "Antenna impedance, EAST, Error, ICRF, Probe",

author = "Wang, \{J. H.\} and G. Chen and Zhao, \{Y. P.\} and Mao, \{Y. Z.\} and S. Yuan and Zhang, \{X. J.\} and Bernard, \{J. M.\} and G. Lombard and W. Helou and Z. Chen and G. Urbanczyk and Qin, \{C. M.\} and Y. Cheng and H. Yang and Zhang, \{J. H.\} and Yang, \{Y. Q.\} and K. Zhang and Ju, \{S. Q.\} and X. Deng and Wan, \{B. N.\} and Gong, \{X. Z.\} and Li, \{J. G.\} and Hu, \{L. Q.\} and Song, \{Y. T.\}",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2017",

month = nov,

doi = "10.1016/j.fusengdes.2017.08.018",

language = "英语",

volume = "122",

pages = "196--203",

journal = "Fusion Engineering and Design",

issn = "0920-3796",

publisher = "Elsevier B.V.",

}

Wang, JH, Chen, G, Zhao, YP, Mao, YZ, Yuan, S, Zhang, XJ, Bernard, JM, Lombard, G, Helou, W, Chen, Z, Urbanczyk, G, Qin, CM, Cheng, Y, Yang, H, Zhang, JH, Yang, YQ, Zhang, K, Ju, SQ, Deng, X, Wan, BN, Gong, XZ, Li, JG, Hu, LQ & Song, YT 2017, 'ICRF antenna impedance measurements with voltage and current probes on EAST', Fusion Engineering and Design, vol. 122, pp. 196-203. https://doi.org/10.1016/j.fusengdes.2017.08.018

TY - JOUR

T1 - ICRF antenna impedance measurements with voltage and current probes on EAST

AU - Wang, J. H.

AU - Chen, G.

AU - Zhao, Y. P.

AU - Mao, Y. Z.

AU - Yuan, S.

AU - Zhang, X. J.

AU - Bernard, J. M.

AU - Lombard, G.

AU - Helou, W.

AU - Chen, Z.

AU - Urbanczyk, G.

AU - Qin, C. M.

AU - Cheng, Y.

AU - Yang, H.

AU - Zhang, J. H.

AU - Yang, Y. Q.

AU - Zhang, K.

AU - Ju, S. Q.

AU - Deng, X.

AU - Wan, B. N.

AU - Gong, X. Z.

AU - Li, J. G.

AU - Hu, L. Q.

AU - Song, Y. T.

PY - 2017/11

Y1 - 2017/11

N2 - A new set of measurement system on the Experimental Advanced Superconducting Tokamak (EAST), based on voltage and current probes, is installed on transmission line between matching system and ion cyclotron range of frequencies antenna to measure the antenna input impedance. The data can be used for impedance-matching points optimizing, as well as coupling coefficient assessment by deducing the antenna coupling resistance from antenna input impedance. The measurement error of amplitude and phase difference show distinct impact on the coupling resistance. Generally, the amplitude measurement error has a small impact on coupling resistance, while the phase measurement error significantly affects the coupling resistance. Instead of using phase detectors, phases can be extract from the power measurements. Thus, the antenna input impedance and coupling resistance can be deduced from the amplitude of voltage probe, amplitude of current probe, as well as the antenna feeding power. on previous experiments, the impedance measurement technique based on voltage probes array is utilized to evaluate coupling resistances. In EAST 2016 campaign, the load coupling resistance calculated by using such two techniques were detected and the results showed agreement.

AB - A new set of measurement system on the Experimental Advanced Superconducting Tokamak (EAST), based on voltage and current probes, is installed on transmission line between matching system and ion cyclotron range of frequencies antenna to measure the antenna input impedance. The data can be used for impedance-matching points optimizing, as well as coupling coefficient assessment by deducing the antenna coupling resistance from antenna input impedance. The measurement error of amplitude and phase difference show distinct impact on the coupling resistance. Generally, the amplitude measurement error has a small impact on coupling resistance, while the phase measurement error significantly affects the coupling resistance. Instead of using phase detectors, phases can be extract from the power measurements. Thus, the antenna input impedance and coupling resistance can be deduced from the amplitude of voltage probe, amplitude of current probe, as well as the antenna feeding power. on previous experiments, the impedance measurement technique based on voltage probes array is utilized to evaluate coupling resistances. In EAST 2016 campaign, the load coupling resistance calculated by using such two techniques were detected and the results showed agreement.

KW - Antenna impedance

KW - EAST

KW - Error

KW - ICRF

KW - Probe

UR - https://www.scopus.com/pages/publications/85028950838

U2 - 10.1016/j.fusengdes.2017.08.018

DO - 10.1016/j.fusengdes.2017.08.018

M3 - 文章

AN - SCOPUS:85028950838

SN - 0920-3796

VL - 122

SP - 196

EP - 203

JO - Fusion Engineering and Design

JF - Fusion Engineering and Design

ER -

ICRF antenna impedance measurements with voltage and current probes on EAST

Abstract

Keywords

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