The use of near-axis magnetic fields for stellarator turbulence simulations

  title={The use of near-axis magnetic fields for stellarator turbulence simulations},
  author={Rogerio Jorge and Matt Landreman},
  journal={Plasma Physics and Controlled Fusion},
The design of turbulence optimized stellarators has so far relied on three-dimensional equilibrium codes such as VMEC in order to find the minimum of a given objective function. In this work, we propose a complimentary approach based on the near-axis expansion to compute the geometry parameters of neoclassicaly optimized stellarators used in turbulence studies. As shown here, the near-axis expansion can be a reasonable approximation of the geometric parameters relevant for turbulence and… 
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Three-dimensional analysis of tokamaks and stellarators
  • P. Garabedian
  • Physics
    Proceedings of the National Academy of Sciences
  • 2008
Three-dimensional asymmetries in bifurcated numerical solutions of the axially symmetric tokamak problem are relevant to the observation of unstable neoclassical tearing modes and edge localized modes in experiments.
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