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@ARTICLE{Kallenbach:836781,
      author       = {Kallenbach, A. and Coenen, Jan Willem and ASDEX Upgrade
                      Team, and EUROfusion MST1 Team,},
      title        = {{O}verview of {ASDEX} {U}pgrade results},
      journal      = {Nuclear fusion},
      volume       = {57},
      number       = {10},
      issn         = {1741-4326},
      address      = {Vienna},
      publisher    = {IAEA},
      reportid     = {FZJ-2017-05832},
      pages        = {102015 -},
      year         = {2017},
      abstract     = {The ASDEX Upgrade (AUG) programme is directed towards
                      physics input to critical elements of the ITER design and
                      the preparation of ITER operation, as well as addressing
                      physics issues for a future DEMO design. Since 2015, AUG is
                      equipped with a new pair of 3-strap ICRF antennas, which
                      were designed for a reduction of tungsten release during
                      ICRF operation. As predicted, a factor two reduction on the
                      ICRF-induced W plasma content could be achieved by the
                      reduction of the sheath voltage at the antenna limiters via
                      the compensation of the image currents of the central and
                      side straps in the antenna frame. There are two main
                      operational scenario lines in AUG. Experiments with low
                      collisionality, which comprise current drive, ELM
                      mitigation/suppression and fast ion physics, are mainly done
                      with freshly boronized walls to reduce the tungsten influx
                      at these high edge temperature conditions. Full ELM
                      suppression and non-inductive operation up to a plasma
                      current of ${{I}_{\text{p}}}=0.8$ MA could be obtained at
                      low plasma density. Plasma exhaust is studied under
                      conditions of high neutral divertor pressure and separatrix
                      electron density, where a fresh boronization is not
                      required. Substantial progress could be achieved for the
                      understanding of the confinement degradation by strong D
                      puffing and the improvement with nitrogen or carbon seeding.
                      Inward/outward shifts of the electron density profile
                      relative to the temperature profile effect the edge
                      stability via the pressure profile changes and lead to
                      improved/decreased pedestal performance. Seeding and D gas
                      puffing are found to effect the core fueling via changes in
                      a region of high density on the high field side (HFSHD).},
      cin          = {IEK-4},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IEK-4-20101013},
      pnm          = {174 - Plasma-Wall-Interaction (POF3-174)},
      pid          = {G:(DE-HGF)POF3-174},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000404620600004},
      doi          = {10.1088/1741-4326/aa64f6},
      url          = {https://juser.fz-juelich.de/record/836781},
}