3D Diagnostics

This page is generated from in-code XGC I/O metadata by utils/python/document_outputs.py.

Three-dimensional diagnostic outputs. Some call sites share metadata with the corresponding 2D file.

xgc.2d/3d.*.bp

Variable

Units

Description

As_rho_ff

T m

Field-following As components at gyrocenter

aparh

T m

Perturbed parallel vector potential A_h

apars

T m

Perturbed scalar potential components As

dAs_rho_ff

T m

Field-following derivatives of As at gyrocenter

dBphi

T

Toroidal magnetic field perturbation in Tesla

dBpsi

T

Radial magnetic field perturbation in Tesla

dBtheta

T

Poloidal magnetic field perturbation in Tesla

ddpotdt

V s^-1

Time derivative of perturbed potential

depsidt

V m^-1 s^-1

Time derivative of electric field across flux surfaces

dethetadt

V m^-1 s^-1

Time derivative of electric field along flux surfaces

dpot

V

Perturbed potential in volt.

dpot_es

V

Electrostatic potential

dpot_n0

V

n=0 component of perturbed potential

eden

m^-3

Electron density at each mesh node interpolated from surrounding marker particles

ejpar

A m^-2

Electron parallel current density

epara

V/m

Parallel (to the magnetic field) electric field

epara2

V/m

Parallel electric field for evaluating \(\partial A_s/\partial t = -\mathbf{b}\cdot\nabla\phi\)

epsi

V/m

Radial electric field in Volt per meter

etheta

V/m

Poloidal electric field in Volt per meter

iden

m^-3

Ion density at each mesh node interpolated from surrounding marker particles

ijpar

A m^-2

Ion parallel current density

iphi

Positive integer

Index of local plane (0-based)

nnode

Positive integer

Number of 3D mesh nodes.

node_to_wall

Integer index

Mapping from mesh node to wall index

nphi

Positive integer

Number of toroidal mesh planes \(N_{\mathrm{planes}}\).

nwall

Positive integer

Number of wall vertices

phi

rad

Toroidal angle of this plane

phi_left

rad

Toroidal angle of left plane

phi_right

rad

Toroidal angle of right plane

pot0

V

Axisymmetric, flux-surface averaged (n=0, m=0) electric potential

pot0m

V

Axisymmetric (n=0, m>0) electric potential

sheath_nphi

Positive integer

Number of unique planes of sheath potential

shpot

V

Sheath potential

sp_name + "marker_den"

# marker particles

Marker density at each mesh node interpolated from surrounding marker particles

sp_name + "mean_weight"

#real / #marker

Mean particle weight (real particles / marker particles) at each mesh node

sp_name + "temp"

eV

Temperature moment

sp_name + "vp"

m/s

Parallel velocity moment

sp_name + "weight_variance"

(#real)^2 / #marker

Particle weight variance at each mesh node

sp_name + "wsum"

m^-3

Density moment

time

s

Simulation time of step in seconds

xgc.f2d/f3d.*.bp

Variable

Units

Description

[species]_T_perp

eV

Perpendicular temperature for each non-adiabatic species.

[species]_T_para

eV

Parallel temperature for each non-adiabatic species.

[species]_u_para

m/s

Parallel bulk flow for each non-adiabatic species.

[species]_den

m^-3

Density for each non-adiabatic species.

[species]_[channel]_[component]_[contribution]

channel-dependent

Velocity-space moment for each non-adiabatic species. [channel] is one of toroidal_flow, poloidal_flow, parallel_flow, radial_flux_ExB, radial_flux_mag, radial_flux_3db, tor_ang_mom, rad_mom_flux_ExB, rad_mom_flux_mag, rad_mom_flux_3db, radial_en_flux_ExB, radial_en_flux_mag, radial_en_flux_3db, radial_pot_en_flux_ExB, radial_pot_en_flux_mag, radial_pot_en_flux_3db, par_mom_flux, par_en_flux, or par_pot_en_flux. [component] is n0 or turb in XGC1 and omitted in XGCa. [contribution] is f0 for the adiabatic contribution or df for the non-adiabatic contribution.

[species]_den_en

m^-3

Energy-binned density for XGC1 turbulent non-adiabatic moments.

[species]_energy_en

eV

Energy-bin coordinate for XGC1 turbulent non-adiabatic moments.

[species]_ExB_flux_en

m^-2 s^-1

Energy-binned ExB particle flux for XGC1 turbulent non-adiabatic moments.

[species]_ExB_enflux_en

J m^-2 s^-1

Energy-binned ExB energy flux for XGC1 turbulent non-adiabatic moments.

[species]_f0_delta_n

m^-3

Species density perturbation added to the analytic f0 background.

[species]_f0_delta_u

m/s

Species flow perturbation added to the analytic f0 background.

[species]_f0_delta_T

eV

Species temperature perturbation added to the analytic f0 background.

dpot

V

Perturbed potential at the midplane, written by XGC1.

pot0

V

Axisymmetric potential, written by XGC1.