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@ARTICLE{Mertens:857961,
      author       = {Mertens, Philippe},
      title        = {{T}he {C}ore-{P}lasma {CXRS} {D}iagnostic for {ITER}: {A}n
                      {I}ntroduction to the {C}urrent {D}esign},
      journal      = {Journal of fusion energy},
      volume       = {38},
      number       = {3-4},
      issn         = {1572-9591},
      address      = {New York, NY},
      publisher    = {Springer Science + Business Media B.V.},
      reportid     = {FZJ-2018-06908},
      pages        = {264-282},
      year         = {2019},
      abstract     = {The development and design of the CXRS diagnostic for the
                      core plasma of ITER is used as a pretext to elaborate on
                      several of the main challenges of optical diagnostics on
                      such a large fusion device. The idea was to confront the
                      students of the 16th Ettore Majorana School on Diagnostics
                      and Technology Developments with as many aspects of the
                      design of optical diagnostics as possible. After an
                      elementary review of the basics of charge-exchange, of
                      typical spectra, of intended measurements and of the
                      expected associated background, the DNB (diagnostic neutral
                      beam) is briefly presented. The light collection and
                      transport to the ex-vessel fibres and spectrometers
                      constitutes the main part of this contribution: building on
                      existing telescope and endoscope systems, the choice of a
                      suitable optical layout for the core-plasma CXRS diagnostic
                      at ITER is discussed. An account follows of the protective
                      measures against the degradation of the first mirror, which
                      will be exposed to high particle and heat fluxes: an
                      appropriate duct, a shutter and, possibly, a cleaning
                      discharge with “End-of-Cleaning Indicator”.},
      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:000476509600002},
      doi          = {10.1007/s10894-018-0202-1},
      url          = {https://juser.fz-juelich.de/record/857961},
}