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@ARTICLE{Neverov:826491,
      author       = {Neverov, V. S. and Kukushkin, A. B. and Stamp, M. F. and
                      Alekseev, A. G. and Brezinsek, S. and von Hellermann, M.},
      title        = {{D}etermination of divertor stray light in high-resolution
                      main chamber {H} α spectroscopy in {JET}-{ILW}},
      journal      = {Nuclear fusion},
      volume       = {57},
      number       = {1},
      issn         = {1741-4326},
      address      = {Vienna},
      publisher    = {IAEA},
      reportid     = {FZJ-2017-00715},
      pages        = {016031 -},
      year         = {2017},
      abstract     = {The theoretical model suggested for ITER main chamber H α
                      spectroscopy is applied to the high-resolution spectroscopy
                      (HRS) data of recent JET ITER-like wall (ILW) experiments.
                      The model is aimed at reconstructing the neutral hydrogen
                      isotope density in the SOL, as well as the isotope ratio, by
                      solving a multi-parametric inverse problem with allowance
                      for (i) the strong divertor stray light (DSL) on the
                      main-chamber lines of sight (LoS), (ii) substantial
                      deviation of the neutral atom velocity distribution function
                      (VDF) from a Maxwellian in the SOL, and (iii) data for the
                      direct observation of the divertor. The JET-ILW HRS data on
                      resolving the power at the deuterium and hydrogen spectral
                      lines of the Balmer-alpha series is analysed, with direct
                      observation of the divertor from the top and with
                      observation of the inner wall along the tangential and
                      radial LoS from the equatorial ports. This data allows the
                      spectrum of the DSL and the signal-to-background ratio for
                      the Balmer-alpha light emitted from the far SOL and divertor
                      in the JET-ILW to be evaluated. The results support the
                      expectation of the strong impact of the DSL upon the ITER
                      main chamber H α (and visible light) spectroscopy
                      diagnostics.},
      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:000403485000001},
      doi          = {10.1088/0029-5515/57/1/016031},
      url          = {https://juser.fz-juelich.de/record/826491},
}