Poloidal rotation driven by electron cyclotron resonance wave in tokamak plasmas

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 analysi...

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Bibliographic Details
Published in:AIP advances 2017-10, Vol.7 (10), p.105021-105021-6
Main Authors: Zhou, Qing, Xu, Xinliang, Wen, Jie, Nie, Lin, Tang, Changjian, Gong, Yubin
Format: Article
Language:English
Subjects:
Cyclotron resonance
Damping
Electric fields
Electron cyclotron resonance
Ions
Magnetic resonance
Mathematical models
Plasma
Rotating plasmas
Rotation
Tokamak devices
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Summary: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.
ISSN:2158-3226
2158-3226
DOI:10.1063/1.5006501