| PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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Synergy Current Driven by Combined Lower Hybrid Wave and Different Polarized Electron Cyclotron Wave in Tokamak Plasma |
| CHEN Shao-Yong1**, TANG Chang-Jian1, ZHANG Xin-Jun2 |
1College of Physical Science and Technology, Sichuan University, Chengdu 610065
2Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031
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| Cite this article: |
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CHEN Shao-Yong, TANG Chang-Jian, ZHANG Xin-Jun 2013 Chin. Phys. Lett. 30 065202 |
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Abstract The synergy current driven by combined lower hybrid wave (LHW) and electron cyclotron wave (ECW) in two different polarizations is studied. It is shown that improvement of the current drive efficiency can be obtained during the synergy current drive, using either the fundamental ordinary mode (1O-mode) or the second harmonic extraordinary mode (2X-mode) ECW. Detailed comparison of using the two modes reveals that the 1O-mode is more effective than the 2X-mode. It is also found that the synergy current driven by LHW and 2X-mode ECW is more likely to become negative when the power of ECW is higher than that of LHW.
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Received: 20 December 2012
Published: 31 May 2013
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| PACS: |
52.55.Fa
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(Tokamaks, spherical tokamaks)
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52.35.Hr
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(Electromagnetic waves (e.g., electron-cyclotron, Whistler, Bernstein, upper hybrid, lower hybrid))
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52.55.Wq
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(Current drive; helicity injection)
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52.65.Ff
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(Fokker-Planck and Vlasov equation)
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