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@ARTICLE{Guillemaut:281587,
      author       = {Guillemaut, C. and Jardin, A. and Horacek, J. and
                      Borodkina, I. and Autricque, A. and Arnoux, G. and Boom, J.
                      and Brezinsek, S. and Coenen, J. W. and De La Luna, E. and
                      Devaux, S. and Eich, T. and Harting, D. and Kirschner, A.
                      and Lipschultz, B. and Matthews, G. F. and Meigs, A. and
                      Moulton, D. and O’Mullane, M. and Stamp, M.},
      title        = {{E}xperimental estimation of tungsten impurity sputtering
                      due to {T}ype {I} {ELM}s in {JET}-{ITER}-like wall using
                      pedestal electron cyclotron emission and target {L}angmuir
                      probe measurements},
      journal      = {Physica scripta},
      volume       = {T167},
      issn         = {1402-4896},
      address      = {Bristol},
      publisher    = {IoP Publ.},
      reportid     = {FZJ-2016-01276},
      pages        = {014005 -},
      year         = {2016},
      abstract     = {The ITER baseline scenario, with 500 MW of DT fusion power
                      and Q = 10, will rely on a Type I ELMy H-mode and will be
                      achieved with a tungsten (W) divertor. W atoms sputtered
                      from divertor targets during mitigated ELMs are expected to
                      be the dominant source in ITER. W impurity concentration in
                      the plasma core can dramatically degrade its performance and
                      lead to potentially damaging disruptions. Understanding the
                      physics of the target W source due to sputtering during ELMs
                      and inter-ELMs is important and can be helped by
                      experimental measurements with improved precision. It has
                      been established that the ELMy target ion impact energy has
                      a simple linear dependence with the pedestal electron
                      temperature measured by Electron Cyclotron Emission (ECE).
                      It has also been shown that Langmuir Probes (LP) ion flux
                      measurements are reliable during ELMs due to the
                      surprisingly low electron temperature. Therefore, in this
                      paper, LP and ECE measurements in JET-ITER-Like-Wall (ILW)
                      unseeded Type I ELMy H-mode experiments have been used to
                      estimate the W sputtering flux from divertor targets in ELM
                      and inter-ELM conditions. Comparison with similar estimates
                      using W I spectroscopy measurements shows a reasonable
                      agreement for the ELM and inter-ELM W source. The main
                      advantage of the method involving LP measurements is the
                      very high time resolution of the diagnostic (~10 μs)
                      allowing very precise description of the W sputtering source
                      during ELMs.},
      cin          = {IEK-4 / ZEA-2},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IEK-4-20101013 / I:(DE-Juel1)ZEA-2-20090406},
      pnm          = {174 - Plasma-Wall-Interaction (POF3-174)},
      pid          = {G:(DE-HGF)POF3-174},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000383504700006},
      doi          = {10.1088/0031-8949/2015/T167/014005},
      url          = {https://juser.fz-juelich.de/record/281587},
}