`plasma_initiation`¶

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Description the early phases of the plasma, before an equilibrium can be calculated

Maximum occurrences (MDS+ backend only): 1

New in version 3.38.0: lifecycle status alpha

Changed in version 3.39.0.

ids_propertiesstructure ¶

See common IDS structure reference: ids_properties.

global_quantitiesstructure ¶Global quantities

Global quantities

global_quantities/b_field_strayTstructure ¶Stray magnetic field at plasma position

Stray magnetic field at plasma position

global_quantities/b_field_stray/data(:) ⇹as_parentFLT_1D ¶Data

Data

	Coordinate
1	`global_quantities/b_field_stray/time`

global_quantities/b_field_stray/time(:)sFLT_1D ¶Time

Time

	Coordinate
1	`1...N`

global_quantities/b_field_perpendicularTstructure ¶Perpendicular magnetic field at plasma position. […]

Perpendicular magnetic field at plasma position. b_field_perpendicular = sqrt(b_field_stray^2+b_field_eddy^2)

global_quantities/b_field_perpendicular/data(:) ⇹as_parentFLT_1D ¶Data

Data

	Coordinate
1	`global_quantities/b_field_perpendicular/time`

global_quantities/b_field_perpendicular/time(:)sFLT_1D ¶Time

Time

	Coordinate
1	`1...N`

global_quantities/connection_lengthmstructure ¶Average length of open magnetic field lines. […]

Average length of open magnetic field lines. In the case of fully closed field lines, connection_length = 1

global_quantities/connection_length/data(:) ⇹as_parentFLT_1D ¶Data

Data

	Coordinate
1	`global_quantities/connection_length/time`

global_quantities/connection_length/time(:)sFLT_1D ¶Time

Time

	Coordinate
1	`1...N`

global_quantities/coulomb_logarithm-structure ¶Coulomb logarithm

Coulomb logarithm

global_quantities/coulomb_logarithm/data(:) ⇹as_parentFLT_1D ¶Data

Data

	Coordinate
1	`global_quantities/coulomb_logarithm/time`

global_quantities/coulomb_logarithm/time(:)sFLT_1D ¶Time

Time

	Coordinate
1	`1...N`

b_field_lines(itime)AoS ¶Magnetic field line tracing results, given at various time slices

Magnetic field line tracing results, given at various time slices

	Coordinate
1	`b_field_lines(itime)/time`

b_field_lines(itime)/grid_typestructure ¶Selection of one of a set of grid types

Selection of one of a set of grid types

This is an identifier. See poloidal_plane_coordinates_identifier for the available options.

b_field_lines(itime)/grid_type/name STR_0D ¶Short string identifier

Short string identifier

b_field_lines(itime)/grid_type/index INT_0D ¶Integer identifier (enumeration index within a list). […]

Integer identifier (enumeration index within a list). Private identifier values must be indicated by a negative index.

b_field_lines(itime)/grid_type/description STR_0D ¶Verbose description

Verbose description

b_field_lines(itime)/gridstructure ¶Definition of the 2D grid (the content of dim1 and dim2 is defined […]

Definition of the 2D grid (the content of dim1 and dim2 is defined by the selected grid_type)

b_field_lines(itime)/grid/dim1(:) ⇹mixedFLT_1D ¶First dimension values

First dimension values

	Coordinate
1	`1...N`

b_field_lines(itime)/grid/dim2(:) ⇹mixedFLT_1D ¶Second dimension values

Second dimension values

	Coordinate
1	`1...N`

b_field_lines(itime)/grid/volume_element(:,:) ⇹m^3FLT_2D ¶Elementary plasma volume of plasma enclosed in the cell formed […]

Elementary plasma volume of plasma enclosed in the cell formed by the nodes [dim1(i) dim2(j)], [dim1(i+1) dim2(j)], [dim1(i) dim2(j+1)] and [dim1(i+1) dim2(j+1)]

	Coordinate
1	`b_field_lines(itime)/grid/dim1`
2	`b_field_lines(itime)/grid/dim2`

b_field_lines(itime)/townsend_or_closed_positionsstructure ¶List of all R, Z positions along all field lines encoutering […]

List of all R, Z positions along all field lines encoutering Townsend condition or being closed field lines

b_field_lines(itime)/townsend_or_closed_positions/r(:) ⇹mFLT_1D ¶Major radius

Major radius

	Coordinate
1	`1...N`

b_field_lines(itime)/townsend_or_closed_positions/z(:) ⇹mFLT_1D ¶Height

Height

	Coordinate
1	`b_field_lines(itime)/townsend_or_closed_positions/r`

b_field_lines(itime)/townsend_or_closed_grid_positionsstructure ¶List of all R, Z grid positions (from ../grid) containing field […]

List of all R, Z grid positions (from ../grid) containing field lines encoutering Townsend condition or being closed field lines

b_field_lines(itime)/townsend_or_closed_grid_positions/r(:) ⇹mFLT_1D ¶Major radius

Major radius

	Coordinate
1	`1...N`

b_field_lines(itime)/townsend_or_closed_grid_positions/z(:) ⇹mFLT_1D ¶Height

Height

	Coordinate
1	`b_field_lines(itime)/townsend_or_closed_grid_positions/r`

b_field_lines(itime)/starting_positionsstructure ¶Starting position to initiate field line tracing, for each field […]

Starting position to initiate field line tracing, for each field line

b_field_lines(itime)/starting_positions/r(:) ⇹mFLT_1D ¶Major radius

Major radius

	Coordinate
1	`1...N`

b_field_lines(itime)/starting_positions/z(:) ⇹mFLT_1D ¶Height

Height

	Coordinate
1	`b_field_lines(itime)/starting_positions/r`

b_field_lines(itime)/e_field_townsend(:) ⇹V.m^-1FLT_1D ¶Townsend electric field along each field line

Townsend electric field along each field line

	Coordinate
1	`b_field_lines(itime)/starting_positions/r`

b_field_lines(itime)/e_field_parallel(:) ⇹V.m^-1FLT_1D ¶Parallel electric field along each field line

Parallel electric field along each field line

	Coordinate
1	`b_field_lines(itime)/starting_positions/r`

b_field_lines(itime)/lengths(:) ⇹mFLT_1D ¶Length of each field line

Length of each field line

	Coordinate
1	`b_field_lines(itime)/starting_positions/r`

b_field_lines(itime)/pressure ⇹PaFLT_0D ¶Prefill gas pressure used in Townsend E field calculation

Prefill gas pressure used in Townsend E field calculation

b_field_lines(itime)/open_fraction ⇹-FLT_0D ¶Fraction of open field lines : ratio open fields lines / (open+closed […]

Fraction of open field lines : ratio open fields lines / (open+closed field lines)

b_field_lines(itime)/timesFLT_0D ¶Time

Time

profiles_2d(itime)AoS ¶2D profiles in the poloidal plane, given at various time slices

2D profiles in the poloidal plane, given at various time slices

	Coordinate
1	`profiles_2d(itime)/time`

New in version >3.38.1.

profiles_2d(itime)/grid_typestructure ¶Selection of one of a set of grid types

Selection of one of a set of grid types

This is an identifier. See poloidal_plane_coordinates_identifier for the available options.

profiles_2d(itime)/grid_type/name STR_0D ¶Short string identifier

Short string identifier

profiles_2d(itime)/grid_type/index INT_0D ¶Integer identifier (enumeration index within a list). […]

Integer identifier (enumeration index within a list). Private identifier values must be indicated by a negative index.

profiles_2d(itime)/grid_type/description STR_0D ¶Verbose description

Verbose description

profiles_2d(itime)/gridstructure ¶Definition of the 2D grid (the content of dim1 and dim2 is defined […]

Definition of the 2D grid (the content of dim1 and dim2 is defined by the selected grid_type)

profiles_2d(itime)/grid/dim1(:) ⇹mixedFLT_1D ¶First dimension values

First dimension values

	Coordinate
1	`1...N`

profiles_2d(itime)/grid/dim2(:) ⇹mixedFLT_1D ¶Second dimension values

Second dimension values

	Coordinate
1	`1...N`

profiles_2d(itime)/grid/volume_element(:,:) ⇹m^3FLT_2D ¶Elementary plasma volume of plasma enclosed in the cell formed […]

Elementary plasma volume of plasma enclosed in the cell formed by the nodes [dim1(i) dim2(j)], [dim1(i+1) dim2(j)], [dim1(i) dim2(j+1)] and [dim1(i+1) dim2(j+1)]

	Coordinate
1	`profiles_2d(itime)/grid/dim1`
2	`profiles_2d(itime)/grid/dim2`

profiles_2d(itime)/e_field_tor(:,:) ⇹V.m^-1FLT_2D ¶Toroidal component of the electric field

Toroidal component of the electric field

	Coordinate
1	`profiles_2d(itime)/grid/dim1`
2	`profiles_2d(itime)/grid/dim2`

Deprecated since version 3.42.0.

profiles_2d(itime)/e_field_phi(:,:) ⇹V.m^-1FLT_2D ¶Toroidal component of the electric field

Toroidal component of the electric field

	Coordinate
1	`profiles_2d(itime)/grid/dim1`
2	`profiles_2d(itime)/grid/dim2`

Changed in version 3.42.0: Renamed from e_field_tor

profiles_2d(itime)/timesFLT_0D ¶Time

Time

codestructure ¶

See common IDS structure reference: code.

time(:)sFLT_1D ¶Generic time

Generic time

	Coordinate
1	`1...N`

plasma_initiation¶

`plasma_initiation`¶