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@ARTICLE{KrmerFlecken:829729,
      author       = {Krämer-Flecken, A. and Windisch, T. and Behr, W. and
                      Czymek, G. and Drews, P. and Fuchert, G. and Geiger, J. and
                      Grulke, O. and Hirsch, M. and Knaup, M. and Liang, Yunfeng
                      and Neubauer, O. and Pasch, E. and Velasco, J. L.},
      title        = {{I}nvestigation of turbulence rotation in limiter plasmas
                      at {W}7-{X} with newly installed poloidal correlation
                      reflectometer},
      journal      = {Nuclear fusion},
      volume       = {57},
      number       = {6},
      issn         = {1741-4326},
      address      = {Vienna},
      publisher    = {IAEA},
      reportid     = {FZJ-2017-03367},
      pages        = {066023 -},
      year         = {2017},
      abstract     = {For the first operation phase of the optimized stellarator
                      W7-X, a heterodyne poloidal correlation reflectometry
                      diagnostic is installed and put into operation. The system
                      is intended to measure the perpendicular (with respect to
                      the magnetic field) turbulence rotation and turbulence
                      properties, such as the decorrelation time and correlation
                      length at the plasma edge. Furthermore, it can give
                      information on the magnetic field line pitch angle. The
                      system consists of an array of microwave antennas
                      distributed in the poloidal and toroidal directions. The
                      frequency range of 22 GHz–40 GHz allows us to access local
                      plasma densities of $0.6\times {{10}^{19}}$
                      m−3–$2.0\times {{10}^{19}}$ m−3.During the first
                      operation phase the turbulence rotation is measured in
                      almost all plasmas. In addition, the radial electric field
                      is estimated and compared to that in neoclassical theory.
                      The relatively low plasma density allows us to cover up to
                      80\% of the plasma radius during OP1.1. The obtained data
                      cover various experimental programs and are partly presented
                      in the paper.},
      cin          = {IEK-4 / ZEA-1},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IEK-4-20101013 / I:(DE-Juel1)ZEA-1-20090406},
      pnm          = {174 - Plasma-Wall-Interaction (POF3-174) / HITEC -
                      Helmholtz Interdisciplinary Doctoral Training in Energy and
                      Climate Research (HITEC) (HITEC-20170406)},
      pid          = {G:(DE-HGF)POF3-174 / G:(DE-Juel1)HITEC-20170406},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000425870200001},
      doi          = {10.1088/1741-4326/aa66ae},
      url          = {https://juser.fz-juelich.de/record/829729},
}