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DOI

  • Author: Liu, S. C.

    Institute of Plasma Physics, Chinese Academy of Science, China

  • Author: Guo, H. Y.

    Institute of Plasma Physics, Chinese Academy of Science, China

  • Author: Xu, Guandong

    Institute of Plasma Physics, Chinese Academy of Science, China

  • Author: Gao, X.

    Institute of Plasma Physics, Chinese Academy of Science, China

  • Author: Zhu, S. Z.

    Institute of Plasma Physics, Chinese Academy of Science, China

  • Author: Wang, H. Q.

    Institute of Plasma Physics, Chinese Academy of Science, China

  • Author: Wang, L.

    Institute of Plasma Physics, Chinese Academy of Science, China

  • Author: Yan, Ning

    Plasma physics and fusion energy, Department of Physics, Technical University of Denmark, Frederiksborgvej 399 Postboks 49, 4000, Roskilde, Denmark

  • Author: Wang, D. S.

    Institute of Plasma Physics, Chinese Academy of Science, China

  • Author: Liu, P.

    Institute of Plasma Physics, Chinese Academy of Science, China

  • Author: Jiang, M.

    Institute of Plasma Physics, Chinese Academy of Science, China

  • Author: Zhang, W.

    Institute of Plasma Physics, Chinese Academy of Science, China

  • Author: Ming, T. F.

    Institute of Plasma Physics, Chinese Academy of Science, China

  • Author: Chang, J. F.

    Institute of Plasma Physics, Chinese Academy of Science, China

  • Author: Ding, S. Y.

    Institute of Plasma Physics, Chinese Academy of Science, China

  • Author: Xiong, H.

    Institute of Plasma Physics, Chinese Academy of Science, China

  • Author: Shao, L. M.

    Institute of Plasma Physics, Chinese Academy of Science, China

  • Author: Wu, Zhuang

    Institute of Plasma Physics, Chinese Academy of Science, China

  • Author: Luo, G. N.

    Institute of Plasma Physics, Chinese Academy of Science, China

  • Author:

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Divertor asymmetry and its dependence on the ion del B direction has been investigated in the Experimental Advanced Superconducting Tokamak by changing the divertor configuration from lower single null (LSN), via double null (DN), to upper single null (USN) during one single discharge. Divertor plasmas exhibit the usual in-out asymmetry in particle and heat fluxes in LSN with the ion del B direction toward the lower X-point, favoring the outer divertor, especially at high density. The in-out asymmetry is reversed when changing the divertor configuration from LSN to USN, thus clearly demonstrating the effect of classical drifts. DN exhibits an even stronger in-out divertor asymmetry, favoring the outer divertor. A significant top-down asymmetry is also seen for DN, with greater particle and heat fluxes to the bottom divertor. In addition, the parallel plasma flow has been measured by a fast moving Mach probe at the outer midplane, which shows similar magnitude to the Pfirsch-Schluter flow. Its contribution to the poloidal particle flux is also assessed and comparison is made with that from the poloidal E x B drift. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4707396]
Original languageEnglish
JournalPhysics of Plasmas
Publication date2012
Volume19
Issue4
Pages042505
Number of pages9
ISSN1070-664X
DOIs
StatePublished
CitationsWeb of Science® Times Cited: 2

Keywords

  • PHYSICS, FIELD REVERSAL, ASDEX-UPGRADE, PLASMA-FLOW, PROBE SYSTEM, JET, JT-60U, SOL, PERFORMANCE, TRANSPORT, EAST
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