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@INPROCEEDINGS{Park:891338,
      author       = {Park, Heesung and Ra, Ookjoo and Kwon, Kyu Been and Hong,
                      Suk-Ho and Lee, Hyungho and Kim, Kyungmin and Kim, Kyungmin
                      and Son, Soohyun and Romanov, J. and Eksaeva, Alina and
                      Kirschner, A. and Lee, Hae June and Hur, Min Sup},
      title        = {{S}tudy of {E}rosion of {C}arbon and {T}ungsten {D}ivertor
                      in {KSTAR} using {ERO} code},
      reportid     = {FZJ-2021-01431},
      year         = {2021},
      abstract     = {Study of Erosion of Carbon and Tungsten Divertor in KSTAR
                      using ERO codeHeesung Parka,1, Ookjoo Rab, Kyu Been Kwonb,
                      Suk-Ho Hongc, Hyungho Leec,Kyungmin Kimc, Kyungmin Kimc,
                      Soohyun Son c, J. Romanovd, A. Eksaevad, A. Kirschnerd, Hae
                      June Lee a, Min Sup Hurb,†National Fusion Research
                      Institute, 169-148 Gwahak-ro, Yuseong-gu, Daejeon 34133,
                      Koreaa Department of Electrical Computer Engineering, Pusan
                      National University, 2 Busandaehak-ro 63beon-gil,
                      Geumjeong-gu, Busan 46241, Koreab Department of Physics,
                      UNIST, 50 UNIST-gil, Eonyang-eup, Ulju-gun, Ulsan 44919,
                      Koreac National Fusion Research Institute, 169-148
                      Gwahak-ro, Yuseong-gu, Daejeon 34133, Koread
                      Forschungszentrum Julich GmbH, Institut fur Energie- und
                      Klimaforschung – Plasmaphysik, Partner of the Trilateral
                      Euregio Cluster (TEC), Julich 52425, Germany
                      phs@pusan.ac.kr†Corresponding to
                      mshur@unist.ac.krImpurities caused by sputtering of divertor
                      targets and walls differ depending on the surface
                      components: Low Z materials have benefits of radiation
                      control and low core penetration, but, they have very high
                      erosion rate. On the other hand, high Z materials have low
                      erosion rate, while they show high core contamination [1].
                      KSTAR is a full carbon machine, in which 3400 blocks of
                      graphite tiles were installed. Although carbon transport and
                      migration were intensively studied in the past, the carbon
                      transport in KSTAR was never studied systematically.
                      Furthermore, KSTAR is on the way towards full tungsten wall:
                      The erosion of new tungsten divertor and the transport of
                      eroded tungsten atoms has to be studied. The 3D ERO code is
                      a tool that can simulate impurity transport and wall
                      interaction using SOLPS data as background plasma conditions
                      in magnetically confined fusion relevant devices [2]. In
                      this study, the erosion has been simulated for the surfaces
                      of PFCs in KSTAR, made of carbon and tungsten using the ERO
                      code with an EFIT equilibrium data from a shot #21376. We
                      demonstrate changes in the characteristics of the erosion
                      rates and concentrated erosion positions on the surface when
                      the surface material switches from the carbon to the
                      tungsten in the KSTAR. We discuss the limitations of each
                      material for the long-pulse operation.[1] S.Brezinsek et
                      al., Nucl. Fusion 54 (2014) 103001.},
      month         = {Jan},
      date          = {2021-01-25},
      organization  = {24th International Conference on
                       Plasma Surface Interactions in
                       Controlled Fusion Devices (PSI 2020),
                       virtuell (virtuell), 25 Jan 2021 - 29
                       Jan 2021},
      cin          = {IEK-4},
      cid          = {I:(DE-Juel1)IEK-4-20101013},
      pnm          = {134 - Plasma-Wand-Wechselwirkung (POF4-134)},
      pid          = {G:(DE-HGF)POF4-134},
      typ          = {PUB:(DE-HGF)1},
      url          = {https://juser.fz-juelich.de/record/891338},
}