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The General Atomics TGYRO Code Suite (GYRO/NEO/TGYRO)

GYRO is a nonlinear tokamak microturbulence package designed to run on nearly all modern computing platforms, from an ultraportable laptop to the world's largest CRAY X1E/XT3/XT4 and IBM Blue Gene systems. Developed at General Atomics, GYRO uses a fixed (Eulerian) grid to solve the 5-D gyrokinetic-Maxwell equations. Operation is flexible, with the capability to treat

  • a local (flux-tube) or global radial domain, in a full or partial torus
  • general (shaped) or simple circular plasmas
  • adiabatic, drift-kinetic or gyrokinetic electrons with electrostatic or electromagnetic fluctuations
  • experimental or user-defined physical parameters

NEO is a multi-species drift-kinetic solver which enables a first-principles solution of the local neoclassical transport problem. It has the capability to treat

  • any number of Maxwellian species with arbitrary charge and mass.
  • full collisional coupling of all species using the Hirshman-Sigmar collision operator, and various reduced operators
  • general (shaped) or simple circular plasmas
  • experimental or user-defined physical parameters.

TGYRO is a parallel transport manager with the ability to call multiple instances of GYRO and NEO in order to obtain steady-state temperature and density profiles. It has the capability to include

  • turbulent fluxes from GYRO, TGLF or the simple IFS-PPPL model.
  • neoclassical fluxes from NEO, or from simple Hinton-Hazeltine theory.

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