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@ARTICLE{Chmielewski:904041,
      author       = {Chmielewski, P. and Zagórski, R. and Telesca, G. and Brix,
                      M. and Huber, Alexander and Ivanova-Stanik, I. and
                      Kowalska-Strzeciwilk, E. and Pereira, T. and Réfy, D. I.
                      and Tamain, P. and Vécsei, M. and Vianello, N.},
      title        = {{TECXY} simulations of {N}e seeding in {JET} high power
                      scenarios},
      journal      = {Nuclear materials and energy},
      volume       = {27},
      issn         = {2352-1791},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier},
      reportid     = {FZJ-2021-05611},
      pages        = {100962 -},
      year         = {2021},
      abstract     = {Preparation of D-T experiments on JET device raises a
                      question about the mitigation of assumed high power entering
                      the SOL. JET DT scenarios aim to achieve good plasma
                      confinement and the heat loads reduction to the divertor at
                      the same time. Therefore, the divertor corner magnetic field
                      geometry, strike point swiping and impurity seeding are
                      considered to reduce expected high heat fluxes to the
                      divertor plates. The aim of the paper is to analyse the
                      influence of the neon impurity seeding on the plasma
                      transport and its efficiency of the power mitigation in the
                      JET tokamak as well as to perform validation of applied edge
                      plasma model. In this contribution numerical simulations
                      have been performed for two high power (34 MW), neon seeded
                      DD JET discharges in the H-mode with different upstream
                      densities and the same corner divertor configuration
                      prepared as possible candidate for JET DT scenarios. The
                      edge plasma transport have been described by two-dimensional
                      multifluid TECXY code based on Braginskii plasma transport
                      equations with assumed classical parallel transport of the
                      plasma and anomalous perpendicular transport defined by ad
                      hoc heat and particle transport coefficients. TECXY results
                      show impact of the neon seeding on the reduction of the
                      power flowing to the divertor. Scan with the neon
                      concentration carried out for four different upstream
                      densities allow us to determine optimal plasma conditions
                      with the lowest target plate temperature and the lowest
                      effective charge. Performed studies with use of the TECXY
                      code and they comparison to experimental results give the
                      opportunity to perform validation of applied TECXY edge
                      plasma model and show the optimal range of plasma parameters
                      like the upstream density and neon concentration, for which
                      the radiation power in the SOL is the highest.},
      cin          = {IEK-4},
      ddc          = {624},
      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:000663579600004},
      doi          = {10.1016/j.nme.2021.100962},
      url          = {https://juser.fz-juelich.de/record/904041},
}