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@ARTICLE{Liu:862507,
      author       = {Liu, S. C. and Liang, Y. and Drews, P. and Killer, C. and
                      Knieps, A. and Xu, G. S. and Wang, H. Q. and Yan, N. and
                      Han, X. and Höschen, D. and Krämer-Flecken, A. and
                      Nicolai, D. and Satheeswaran, G. and Hammond, K. and Cai, J.
                      Q. and Charl, A. and Cosfeld, J. and Fuchert, G. and Gao, Y.
                      and Geiger, J. and Grulke, O. and Henkel, M. and Hirsch, M.
                      and Hoefel, U. and König, R. and Li, Y. and Neubauer, O.
                      and Pasch, E. and Rahbarnia, K. and Rack, M. and Sandri, N.
                      and Sereda, S. and Schweer, B. and Wang, E. H. and Xu, S.
                      and Gao, X.},
      title        = {{T}he effects of magnetic topology on the scrape-off layer
                      turbulence transport in the first divertor plasma operation
                      of {W}endelstein 7-{X} using a new combined probe},
      journal      = {Nuclear fusion},
      volume       = {59},
      number       = {6},
      issn         = {1741-4326},
      address      = {Vienna},
      publisher    = {IAEA},
      reportid     = {FZJ-2019-02811},
      pages        = {066001 -},
      year         = {2019},
      abstract     = {Wendelstein 7-X (W7-X) was operated successfully with the
                      first divertor plasma in the operation phase 1.2a (OP1.2a).
                      A new combined probe head, developed and installed on the
                      multiple-purpose manipulator, is able to measure the edge
                      plasma profiles (), variation of magnetic field, poloidal
                      and radial turbulence structures. The scrape-off layer (SOL)
                      plasma parameters in two magnetic configurations (standard
                      and high mirror) are in good agreement with the magnetic
                      island structure and the field line connection length
                      calculated by the field line tracer. In both the standard
                      and high mirror configurations, the radial turbulent heat
                      flux and particle flux have strong dependence on the local
                      magnetic topology, revealing two distinct transport
                      patterns: a broadband turbulence dominant region in the
                      outer SOL and a low frequency dominant region in the inner
                      SOL. In the standard divertor configuration, the broadband
                      turbulence with a frequency range of 40–120 kHz is
                      located near the island center along the probe path, leading
                      to outward transport. These broadband fluctuations propagate
                      with a velocity of 2.3–4.4 km s−1 poloidally along the
                      ion diamagnetic drift direction in the plasma frame, with
                      close to 0.1. The large radial transport induced by the
                      broadband turbulence is accompanied by a steep electron
                      density gradient. The low frequency (5–30 kHz) dominant
                      transport exhibits obvious intermittent structure. Some
                      statistical techniques are applied to the characterization
                      of the intermittent transport.},
      cin          = {IEK-4 / ICS-8},
      ddc          = {620},
      cid          = {I:(DE-Juel1)IEK-4-20101013 / I:(DE-Juel1)ICS-8-20110106},
      pnm          = {174 - Plasma-Wall-Interaction (POF3-174)},
      pid          = {G:(DE-HGF)POF3-174},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000465976300001},
      doi          = {10.1088/1741-4326/ab0d29},
      url          = {https://juser.fz-juelich.de/record/862507},
}