Open AccessPoloidal rotation driven by electron cyclotron resonance wave in tokamak plasmas
Author(s) -
Qing Zhou,
Xinliang Xu,
J. Wen,
L. Nie,
Changjian Tang,
Yubin Gong
Publication year - 2017
Publication title -
aip advances
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 58
ISSN - 2158-3226
DOI - 10.1063/1.5006501
Subject(s) - tokamak , physics , electric field , rotation (mathematics) , atomic physics , magnetic field , cyclotron , plasma , electron cyclotron resonance , radius , amplitude , electron , nuclear physics , optics , quantum mechanics , geometry , mathematics , computer security , computer science
The poloidal electric filed, which is the drive field of poloidal rotation, has been observed and increases obviously after the injection of electron cyclotron resonance wave in HL-2A experiment, and the amplitude of the poloidal electric field is in the order of 103 V/m. Through theoretical analysis using Stringer rotation model, the observed poloidal electric field is of the same order as the theoretical calculation value. In addition, the magnetic pump damping which would damp the poloidal rotation is calculated numerically and the calculation results show that the closer to the core plasmas, the stronger the magnetic pump damping will be. Meanwhile, according to the value of the calculated magnetic pump damping, the threshold of the poloidal electric field which could overcome magnetic pump damping and drive poloidal rotation in tokamak plasmas is given out. Finally, the poloidal rotation velocity over time at different minor radius is studied theoretically
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