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High-frequency B-dot probes used to detect characteristics of ion cyclotron range of frequency waves in EAST

Published online by Cambridge University Press:  23 April 2019

Lunan Liu
Affiliation:
Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China University of Science and Technology of China, Hefei 230026, China
Xinjun Zhang
Affiliation:
Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
Chengming Qin
Affiliation:
Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
Yanping Zhao
Affiliation:
Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
Shuai Yuan
Affiliation:
Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
Yuzhou Mao
Affiliation:
Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
Jianhua Wang
Affiliation:
Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China University of Science and Technology of China, Hefei 230026, China
Corresponding

Abstract

The plasma in the scrape-off layer (SOL) has an important effect on the coupling of the waves in the ion cyclotron range of frequencies (ICRF). The high-frequency B-dot (HFB) probes have been installed to investigate the behaviour of ICRF waves on EAST. The fast and slow ICRF wave field amplitudes are measured and a domain parallel wavenumber is deduced. Results of measurements on a test experimental platform and EAST experiments are presented, which include vacuum and plasma situations. In vacuum it is found that field amplitudes increase linearly with ICRF power. Besides, during plasma operation, field amplitudes measured were decreased by an order of magnitude and no linear relation with power was observed. Fast and slow wave power densities fluctuate strongly with plasma density. The experimental results in the laboratory coincide with the simulation results and allow for validating of the measurement method.

Type
Research Article
Copyright
© Cambridge University Press 2019 

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References

Abdoli-Arani, A. 2016 Electron acceleration considering pondermotive force effect in a plasma-filled rectangular waveguide by microwave radiation. Wave Random Complex 26, 407416.CrossRefGoogle Scholar
Baek, S. G., Wallace, G. M., Shinya, T., Shiraiwa, S., Parker, R. R., Takase, Y. & Brunner, D. 2015 Status of diagnostic development to measure parallel wavenumber of lower hybrid waves on alcator C-mod. Radiofreq. Power Plasmas 1689, 080005.Google Scholar
Bobkov, V. et al. 2011 ICRF antenna-plasma interactions and its influence on W sputtering in ASDEX upgrade. J. Nucl. Mater. 415, S1005S1008.CrossRefGoogle Scholar
Bures, M., Jacquinot, J. J., Start, D. F. H. & Brambilla, M. 1990 Role of the antenna screen angle during ICRF heating in jet. Nucl. Fusion 30, 251263.CrossRefGoogle Scholar
Colas, L. et al. 2003 Hot spot phenomena on Tore Supra ICRF antennas investigated by optical diagnostics. Nucl. Fusion 43, 115.CrossRefGoogle Scholar
Colas, L. et al. 2013 RF-sheath patterns modification via novel Faraday screen and strap voltage imbalance on Tore Supra ion cyclotron antennae. J. Nucl. Mater. 438, S330S333.CrossRefGoogle Scholar
Ochoukov, R. et al. 2013 Investigation of RF-enhanced plasma potentials on Alcator C-Mod. J. Nucl. Mater. 438, S875S878.CrossRefGoogle Scholar
Ochoukov, R. et al. 2015 A new B-dot probe-based diagnostic for amplitude, polarization, and wavenumber measurements of ion cyclotron range-of frequency fields on ASDEX Upgrade. Rev. Sci. Instrum. 86, 115112.CrossRefGoogle ScholarPubMed
Ochoukov, R. et al. 2016 ICRF wave field measurements in the presence of scrape off layer turbulence on the ASDEX Upgrade tokamak. Rev. Sci. Instrum. 87, 11D301.CrossRefGoogle ScholarPubMed
Porkolab, M. 2007 17th Topical Conference on Radio Frequency Power in Plasmas (Clearwater, FL, USA, 7–9 May 2007). pp. 312.Google Scholar
Qin, C., Zhang, X., Zhao, Y., Wan, B. & Braun, F. 2015 Electromagnetic analysis of the EAST 4-strap ICRF antenna with HFSS code. Plasma Sci. Technol. 17, 167172.CrossRefGoogle Scholar
Rost, J. C., Porkolab, M. & Boivin, R. L. 2002 Edge ion heating and parametric decay during injection of ion cyclotron resonance frequency power on the Alcator C-Mod tokamak. Phys. Plasmas 9, 12621270.CrossRefGoogle Scholar
Savona, V.2017 Self-consistent interaction of fast particles and ICRF waves in 3D applications of fusion plasma devices. PhD thesis, Jonathan Marc Philippe FAUSTIN.Google Scholar
Valladares, C. E. & Alcayde, D. 1999 Observations of plasma density structures in association with the passage of traveling convection vortices and the occurrence of large plasma jets. Ann. Geophys-Atm. Hydr. 17, 10201039.CrossRefGoogle Scholar
Vannieuwenhove, R. et al. 1988 Parametric decay in the edge plasma of asdex during fast wave heating in the ion-cyclotron frequency-range. Nucl. Fusion 28, 16031609.CrossRefGoogle Scholar
Zhang, X. J. et al. 2013 First results from H-mode plasmas generated by ICRF heating in the EAST. Nucl. Fusion 53, 023004.CrossRefGoogle Scholar

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