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V3FIT
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V3FIT
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This page documents the V3FIT interface to the VMEC equilibrium solver. This lists all the parameters associated with a VMEC equilibrium. These parameters are divided input two types, reconstruction parameters and derived parameters. All parameters are documented in a table of the following form.
Input variable | Description | Code Reference |
Reconstruction parameters are divided into two types, VMEC reconstruction parameters and auxillary parameters.
VMEC Equilibrium reconstruction parameters are parameters that maybe reconstructed that change the equilibirum. These parameters require the equilibrium to reconverge.
ac | 1D Array of function current profile parameters. | vmec_input::ac |
ac_aux_s | 1D Array of segment current profile s poitions. | vmec_input::ac_aux_s |
ac_aux_f | 1D Array of segment current profile f values. | vmec_input::ac_aux_f |
ai | 1D Array of function current profile parameters. | vmec_input::ai |
ai_aux_s | 1D Array of segment iotabar profile s poitions. | vmec_input::ai_aux_s |
ai_aux_f | 1D Array of segment iotabar profile f values. | vmec_input::ai_aux_f |
am | 1D Array of function current profile parameters. | vmec_input::am |
am_aux_s | 1D Array of segment pressure profile s poitions. | vmec_input::am_aux_s |
am_aux_f | 1D Array of segment pressure profile f values. | vmec_input::am_aux_f |
bloat | Extends the field into the vacuum region. | vmec_input::bloat |
rbc | 2D Array of outer boundary R cosine coeffiecents. | vmec_input::rbc |
zbs | 2D Array of outer boundary Z sine coeffiecents. | vmec_input::zbs |
rbs | 2D Array of outer boundary R sine coeffiecents. | vmec_input::rbs |
zbc | 2D Array of outer boundary Z cosine coeffiecents. | vmec_input::zbc |
extcur | 1D Array of external currents. | vmec_input::extcur |
curtor | Toroidal current. | vmec_input::curtor |
phiedge | The edge magnetic flux. | vmec_input::phiedge |
pres_scale | The scaling parameter for the pressure. | vmec_input::pres_scale |
VMEC Auxiliary reconstruction parameters are parameters that maybe reconstructed that do not change the equilibirum. These parameters do not require the equilibrium to reconverge.
pp_ne_b | 1D Array of function density profile parameters. | pprofile_T::pprofile_class::b |
pp_ne_as | 1D Array of segment density profile s poitions. | pprofile_T::pprofile_class::as |
pp_ne_af | 1D Array of segment density profile f values. | pprofile_T::pprofile_class::af |
pp_sxrem_b | 1D Array of function sxrem profile parameters. DEPREICATED only use id when using the old profile specification. | pprofile_T::pprofile_class::b |
pp_sxrem_as | 1D Array of segment sxrem profile s poitions. DEPREICATED only use id when using the old profile specification. | pprofile_T::pprofile_class::as |
pp_sxrem_af | 1D Array of segment sxrem profile f values. DEPREICATED only use id when using the old profile specification. | pprofile_T::pprofile_class::af |
pp_sxrem_b_a | 2D Array of function sxrem profile parameters. First index is the profile number. | vmec_equilibrium::vmec_class::sxrem |
pp_sxrem_as_a | 2D Array of segment sxrem profile s poitions. First index is the profile number. | vmec_equilibrium::vmec_class::sxrem |
pp_sxrem_af_a | 2D Array of segment sxrem profile f values. First index is the profile number. | vmec_equilibrium::vmec_class::sxrem |
pp_te_b | 1D Array of function electron temperature profile parameters. | pprofile_T::pprofile_class::b |
pp_te_as | 1D Array of segment electron temperature profile s poitions. | pprofile_T::pprofile_class::as |
pp_te_af | 1D Array of segment electron temperature profile f values. | pprofile_T::pprofile_class::af |
pp_ti_b | 1D Array of function ion temperature profile parameters. | pprofile_T::pprofile_class::b |
pp_ti_as | 1D Array of segment ion temperature profile s poitions. | pprofile_T::pprofile_class::as |
pp_ti_af | 1D Array of segment ion temperature profile f values. | pprofile_T::pprofile_class::af |
pp_ze_b | 1D Array of function charge profile parameters. | pprofile_T::pprofile_class::b |
pp_ze_as | 1D Array of segment charge profile s poitions. | pprofile_T::pprofile_class::as |
pp_ze_af | 1D Array of segment charge profile f values. | pprofile_T::pprofile_class::af |
phi_offset | Phi angle offset in radians | vmec_equilibrium::vmec_class::phi_offset |
z_offset | Z offset in meters | vmec_equilibrium::vmec_class::z_offset |
Derived parameters are parameters that come from the equilibrium but are not reconstructable.
rmnc | 2D Array of surface R cosine coeffiecents. | read_wout_mod::rmnc |
zmns | 2D Array of surface Z sine coeffiecents. | read_wout_mod::zmns |
lmns | 2D Array of surface lambda sine coeffiecents. | read_wout_mod::lmns |
gmnc | 2D Array of surface g cosine coeffiecents. | read_wout_mod::gmnc |
bsubsmns | 2D Array of surface B_s sine coeffiecents. | read_wout_mod::bsubsmns |
bsubumnc | 2D Array of surface B_u cosine coeffiecents. | read_wout_mod::bsubumnc |
bsubvmnc | 2D Array of surface B_v cosine coeffiecents. | read_wout_mod::bsubvmnc |
bsupumnc | 2D Array of surface B^u cosine coeffiecents. | read_wout_mod::bsupumnc |
bsupvmnc | 2D Array of surface B^v cosine coeffiecents. | read_wout_mod::bsupvmnc |
rmns | 2D Array of surface R sine coeffiecents. | read_wout_mod::rmns |
zmnc | 2D Array of surface Z cosine coeffiecents. | read_wout_mod::zmnc |
lmnc | 2D Array of surface lambda cosine coeffiecents. | read_wout_mod::lmnc |
gmns | 2D Array of surface g sine coeffiecents. | read_wout_mod::gmns |
bsubsmnc | 2D Array of surface B_s cosine coeffiecents. | read_wout_mod::bsubsmnc |
bsubumns | 2D Array of surface B_u sine coeffiecents. | read_wout_mod::bsubumns |
bsubvmns | 2D Array of surface B_v sine coeffiecents. | read_wout_mod::bsubvmns |
bsupumns | 2D Array of surface B^u sine coeffiecents. | read_wout_mod::bsupumns |
bsupvmns | 2D Array of surface B^v sine coeffiecents. | read_wout_mod::bsupvmns |
phi | 1D Array of Toroidal flux. | read_wout_mod::phi |
iotaf | 1D Array of full grid iotabar. | read_wout_mod::iotaf |
iotas | 1D Array of half grid iotabar. | read_wout_mod::iotas |
vvc_smaleli | Internal inducance. Computed in eqfor. | v3f_vmec_comm::vvc_smaleli |
vvc_kappa_p | Mean elongation. Computed in eqfor. | v3f_vmec_comm::vvc_kappa_p |
betatot | Total beta. | read_wout_mod::betatot |
betapol | Poloidal beta. | read_wout_mod::betapol |
betator | Toroidal beta. | read_wout_mod::betator |
betaxis | Beta on axis. | read_wout_mod::betaxis |
jcuru | Poloidal current density. | read_wout_mod::jcuru |
jcurv | Toroidal current density. | read_wout_mod::jcurv |
jdotb | Current density in direction of b field. | read_wout_mod::jdotb |
raxis_cc | Magnetic axis R cosine coeffiecents. | read_wout_mod::raxis |
raxis_cs | Magnetic axis R sine coeffiecents. | read_wout_mod::raxis |
zaxis_cc | Magnetic axis Z cosine coeffiecents. | read_wout_mod::zaxis |
zaxis_cs | Magnetic axis Z sine coeffiecents. | read_wout_mod::zaxis |
qfact | Safety factor profile. | read_wout_mod::qfact |
1.8.17