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@ARTICLE{Ivashov:889017,
      author       = {Ivashov, Ilia and Biel, Wolfgang and Mertens, Philippe},
      title        = {{TFC}-{PREDIM}: {A} {FE} dimensioning procedure for the
                      {TF} coil system of a {DEMO} tokamak reactor},
      journal      = {Fusion engineering and design},
      volume       = {159},
      issn         = {0920-3796},
      address      = {New York, NY [u.a.]},
      publisher    = {Elsevier},
      reportid     = {FZJ-2020-05391},
      pages        = {111948 -},
      year         = {2020},
      abstract     = {The equatorial plane of the inner leg of a toroidal field
                      (TF) coil is the most stressed part of the TF coil system
                      and optimal usage of the radial space in this region is
                      crucial for the design of the DEMO tokamak reactor. A
                      procedure for initial dimensioning (pre-dimensioning) of
                      this region developed earlier [1] is based on a simplified
                      2D geometry of the TF coil cross-section and a
                      semi-analytical approach to estimate stresses in the TF coil
                      case and the conductor jackets with limited capabilities for
                      optimization. This work presents a new procedure named
                      TFC-PREDIM which features a detailed 2D finite element (FE)
                      generalized plane strain model. The model gives very
                      accurate results within a short calculation time and allows
                      additional options for layout optimization. The FE model for
                      the cross-section is generated automatically from the input
                      geometrical parameters of the given layout allowing any of
                      the conductor design options currently investigated for
                      DEMO. The post-processing of the results is also automated,
                      consisting in the determination of the maximum values of the
                      membrane and membrane + bending Tresca stresses for each
                      conductor jacket and for the TF coil case. Two strategies
                      for the optimization of the cross-section are presented:
                      minimization of the TF coil radial build with a predefined
                      maximal toroidal field and maximization of the maximal
                      toroidal field for a predefined radial space.},
      cin          = {IEK-4},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IEK-4-20101013},
      pnm          = {113 - Methods and Concepts for Material Development
                      (POF3-113)},
      pid          = {G:(DE-HGF)POF3-113},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000580835200062},
      doi          = {10.1016/j.fusengdes.2020.111948},
      url          = {https://juser.fz-juelich.de/record/889017},
}