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@ARTICLE{DiGenova:904043,
      author       = {Di Genova, S. and Gallo, A. and Fedorczak, N. and Yang, H.
                      and Ciraolo, G. and Romazanov, J. and Marandet, Y. and
                      Bufferand, H. and Guillemaut, C. and Gunn, J. P. and Gil, C.
                      and Serre, E. and Brezinsek, S. and Team, the WEST},
      title        = {{M}odelling of tungsten contamination and screening in
                      {WEST} plasma discharges},
      journal      = {Nuclear fusion},
      volume       = {61},
      number       = {10},
      issn         = {0029-5515},
      address      = {Vienna},
      publisher    = {IAEA},
      reportid     = {FZJ-2021-05613},
      pages        = {106019 -},
      year         = {2021},
      note         = {kein Zugriff auf Postprint},
      abstract     = {The WEST experiment is currently operating with tungsten
                      plasma-facing components and testing ITER-like divertor
                      monoblocks. In order to support WEST experiments
                      interpretation, numerical analyses were carried out.
                      Starting from WEST experimental data, realistic background
                      plasma conditions were reproduced through SolEdge-EIRENE and
                      used as input for ERO2.0 simulations to investigate tungsten
                      migration. Tungsten contamination due to the different
                      plasma-facing components was modelled under different plasma
                      conditions, highlighting a non-negligible contribution of
                      tungsten coming from the tokamak main chamber. Tungsten
                      penetration factor was computed and used as an indication
                      for tungsten screening by the background plasma at the
                      different tokamak plasma-facing components. Simulations
                      showed the main chamber components to be very weakly
                      screened. Light impurities charge was showed to influence
                      not only tungsten sputtering, but also its probability to
                      enter the confined plasma. Simulations results indicated
                      that even when the tungsten source is not heavily influenced
                      by self-sputtering, contamination of the confined plasma can
                      be strongly impacted by it in low density background plasma
                      conditions. Finally, a one-to-one comparison between
                      tungsten visible spectroscopy at the lower divertor from
                      experimental data and from synthetic diagnostics was
                      performed, showing that it is possible to reproduce a
                      realistic lower divertor signal following experimental
                      evidence on light impurities asymmetry between the targets.},
      cin          = {IEK-4},
      ddc          = {620},
      cid          = {I:(DE-Juel1)IEK-4-20101013},
      pnm          = {134 - Plasma-Wand-Wechselwirkung (POF4-134)},
      pid          = {G:(DE-HGF)POF4-134},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000696374100001},
      doi          = {10.1088/1741-4326/ac2026},
      url          = {https://juser.fz-juelich.de/record/904043},
}