The General Atomics GACODE Suite (GLF23/TGLF/NEO/GYRO/TGYRO)

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GLF23 is the original gyro-Landau-fluid model with a simple system of moment equations and a trial Gaussian wavefunction. It models the physics of

  • trapped electron modes (TEM),
  • ion and electron temperature gradient (ITG, ETG) modes
  • electromagnetic kinetic ballooning (KB) modes.
  • ExB velocity shear

TGLF is the next-generation gyro-Landau-fluid model that improves upon the accuracy of its predecessor, GLF23, using a more accurate system of moment equations and an eigenmode solution method that is valid for shaped geometry and finite aspect ratio. It captures the physics of

  • trapped ion and electron modes (TIM, TEM),
  • ion and electron temperature gradient (ITG, ETG) modes
  • electromagnetic kinetic ballooning (KB) modes.
  • ExB velocity shear

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 full linearized Fokker-Planck collision operator
  • rapid toroidal rotation (including centrifugal effects)
  • general (shaped) or simple circular plasmas
  • experimental or user-defined physical parameters.

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 XT4/XT5 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
  • electrostatic, transverse and compressional electromagnetic fluctuations
  • 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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