Tabular list for input.cgyro

Plasma shape/geometry

input.cgyro parameter

Short description

Default

EQUILIBRIUM_MODEL

Geometry model selector

2

RMIN

Normalized minor radius

0.5

RMAJ

Normalized major radius

3.0

SHIFT

Shafranov shift

0.0

KAPPA

Elongation

1.0

S_KAPPA

Elongation shear

0.0

DELTA

Triangularity

0.0

S_DELTA

Triangularity shear

0.0

ZETA

Squareness

0.0

S_ZETA

Squareness shear

0.0

ZMAG

Elevation

0.0

DZMAG

Gradient of elevation

0.0

Q

Safety factor

2.0

S

Magnetic shear

1.0

BTCCW

Field orientation

-1.0

IPCCW

Current orientation

-1.0

UDSYMMETRY_FLAG

Enforce up-down symmetry

1

Advanced shape parameters

input.cgyro parameter

Short description

Default

SHAPE_COS0

Tilt

0.0

SHAPE_S_COS0

Tilt shear

0.0

SHAPE_COS1

Ovality

0.0

SHAPE_S_COS1

Ovality shear

0.0

SHAPE_COS2

2nd antisymmetric moment

0.0

SHAPE_S_COS2

2nd antisymmetric moment shear

0.0

SHAPE_COS3

3rd antisymmetric moment

0.0

SHAPE_S_COS3

3rd antisymmetric moment shear

0.0

SHAPE_SIN3

3rd symmetric moment

0.0

SHAPE_S_SIN3

3rd symmetric moment shear

0.0

Control parameters

input.cgyro parameter

Short description

Default

PROFILE_MODEL

Profile input selector

1

NONLINEAR_FLAG

Toggle nonlinear simulation

0

ZF_TEST_MODE

Control zonal flow testing

0

SILENT_FLAG

Toggle silent output

0

AMP

Initial \(n>0\) amplitude

0.1

AMP0

Initial \(n=0\) amplitude

0.0

Fields

input.cgyro parameter

Short description

Default

N_FIELD

Number of fields to evolve

1

BETAE_UNIT

Electron beta

0.0

BETAE_UNIT_SCALE

Electron beta scaling parameter

0.0

BETA_STAR_SCALE

Pressure gradient scaling factor

1.0

LAMBDA_DEBYE

Debye length

0.0

LAMBDA_DEBYE_SCALE

Debye length scaling factor

0.0

Numerical Resolution

input.cgyro parameter

Short description

Default

N_RADIAL

Number of radial \(k_x^0\) wavenumbers

4

N_THETA

Number of poloidal \(\theta\) gridpoints

24

N_XI

Number of pitch angle \(\xi\) gridpoints

16

N_ENERGY

Number of energy \(u\) gridpoints

8

E_MAX

Maximum energy

8.0

N_TOROIDAL

Number of binormal \(k_y\) wavenumbers

1

KY

Binormal wavenumber or domain size

0.3

BOX_SIZE

Radial domain size

1

Numerical Dissipation

input.cgyro parameter

Short description

Default

UP_RADIAL

Radial spectral upwind scaling

1.0

UP_THETA

Poloidal upwind scaling

1.0

UP_ALPHA

Binormal spectral upwind scaling

0.0

NUP_RADIAL

Radial spectral upwind order

3

NUP_THETA

Poloidal upwind order

3

NUP_ALPHA

Binormal spectral upwind order

3

Time Stepping

input.cgyro parameter

Short description

Default

DELTA_T_METHOD

Time integrator selection

0

DELTA_T

Time step

0.01

ERROR_TOL

Error tolerance

1e-4

MAX_TIME

Simulation time

1.0

FREQ_TOL

Error tolerance for frequency

0.001

PRINT_STEP

Data output interval

100

RESTART_STEP

Restart data output interval

10

Species-related parameters

input.cgyro parameter

Short description

Default

N_SPECIES

Number of GK species (ions plus electrons)

1

Z_*

Species charge

1

MASS_*

Species mass

1.0

DENS_*

Species density

1.0

TEMP_*

Species temperature

1.0

DLNNDR_*

Species density gradient

1.0

DLNTDR_*

Species temperature gradient

1.0

Collisions

input.cgyro parameter

Short description

Default

NU_EE

Electron-electron collision frequency

0.1

COLLISION_MODEL

Collision model selector

4

COLLISION_FIELD_MODEL

Toggle self-consistent field update

1

COLLISION_MOM_RESTORE

Toggle momentum conservation

1

COLLISION_ENE_RESTORE

Toggle energy conservation

1

COLLISION_ENE_DIFFUSION

Toggle energy diffusion

1

COLLISION_KPERP

Toggle so-called FLR term

0

GPU_BIGMEM_FLAG

Enable GPU offload

0

Rotation physics

input.cgyro parameter

Short description

Default

ROTATION_MODEL

Rotation model selector

1

GAMMA_E

Dopper shearing rate (\(E \times B\) shear)

0.0

GAMMA_P

Rotation shearing rate

0.0

MACH

Rotation speed (Mach number)

0.0

GAMMA_E_SCALE

Doppler shearing rate scaling factor

1.0

GAMMA_P_SCALE

Rotation shearing rate scaling factor

1.0

MACH_SCALE

Rotation speed scaling factor

1.0

Global-spectral parameters

input.cgyro parameter

Short description

Default

N_GLOBAL

Global output resolution

4

NU_GLOBAL

Source rate

15.0

Output file control

input.cgyro parameter

Short description

Default

FIELD_PRINT_FLAG

Output of electromagnetic field components

0

MOMENT_PRINT_FLAG

Output of density and energy moments

0

GFLUX_PRINT_FLAG

Output of global flux profiles

0

H_PRINT_FLAG

Output of distribution (single-mode only)

0