ITER Physics Data Model Documentation for runaway_electrons

Description of runaway electrons

Notation of array of structure indices: itime indicates a time index; i1, i2, i3, ... indicate other indices with their depth in the IDS. This notation clarifies the path of a given node, but should not be used to compare indices of different nodes (they may have different meanings).

Lifecycle status: alpha since version 3.39.0

Last change occured on version: 3.42.1

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Full path name Description Data Type Coordinates
ids_properties Interface Data Structure properties. This element identifies the node above as an IDS structure
ids_properties/comment Any comment describing the content of this IDS {constant} STR_0D
ids_properties/name User-defined name for this IDS occurrence {constant}. Introduced after DD version 3.39.0 STR_0D
ids_properties/homogeneous_time This node must be filled (with 0, 1, or 2) for the IDS to be valid. If 1, the time of this IDS is homogeneous, i.e. the time values for this IDS are stored in the time node just below the root of this IDS. If 0, the time values are stored in the various time fields at lower levels in the tree. In the case only constant or static nodes are filled within the IDS, homogeneous_time must be set to 2 {constant} INT_0D
ids_properties/occurrence_type Type of data contained in this occurrence. Introduced after DD version 3.39.0. Available options (refer to the children of this identifier structure) :
Name Index Description
reconstruction 1 Equilibrium reconstruction
prediction_fixed 2 Equilibrium prediction, fixed boundary
prediction_free 3 Equilibrium prediction, free boundary
mapping 4 Used for mapping equilibrium results from one grid type / resolution to another, or for including variables not present in the first set such as the calculation of magnetic field of other derived parameters
structure
ids_properties/occurrence_type/name Short string identifier {constant} STR_0D
ids_properties/occurrence_type/index Integer identifier (enumeration index within a list). Private identifier values must be indicated by a negative index. {constant} INT_0D
ids_properties/occurrence_type/description Verbose description {constant} STR_0D
ids_properties/source
Lifecycle status: obsolescent since version 3.34.0
Source of the data (any comment describing the origin of the data : code, path to diagnostic signals, processing method, ...). Superseeded by the new provenance structure. {constant} STR_0D
ids_properties/provider Name of the person in charge of producing this data {constant} STR_0D
ids_properties/creation_date Date at which this data has been produced {constant} STR_0D
ids_properties/version_put Version of the access layer package used to PUT this IDS structure
ids_properties/version_put/data_dictionary Version of Data Dictionary used to PUT this IDS {constant} STR_0D
ids_properties/version_put/access_layer Version of Access Layer used to PUT this IDS {constant} STR_0D
ids_properties/version_put/access_layer_language Programming language of the Access Layer high level API used to PUT this IDS {constant} STR_0D
ids_properties/provenance
Lifecycle status: alpha since version 3.34.0
Provenance information about this IDS structure
ids_properties/provenance/node(i1) Set of IDS nodes for which the provenance is given. The provenance information applies to the whole structure below the IDS node. For documenting provenance information for the whole IDS, set the size of this array of structure to 1 and leave the child "path" node empty {constant} array of structures [max_size=20 (limited in MDS+ backend only)] 1- 1...N
ids_properties/provenance/node(i1)/path Path of the node within the IDS, following the syntax given in the link below. If empty, means the provenance information applies to the whole IDS. Click here for further documentation. {constant} STR_0D
ids_properties/provenance/node(i1)/reference(i2) List of references used to populate or calculate this node, identified as explained below. In case the node is the result of of a calculation / data processing, the reference is an input to the process described in the "code" structure at the root of the IDS. The reference can be an IDS (identified by a URI or a persitent identifier, see syntax in the link below) or non-IDS data imported directly from an non-IMAS database (identified by the command used to import the reference, or the persistent identifier of the data reference). Often data are obtained by a chain of processes, however only the last process input are recorded here. The full chain of provenance has then to be reconstructed recursively from the provenance information contained in the data references. Click here for further documentation.. Introduced after DD version 3.41.0 array of structures [max_size=10 (limited in MDS+ backend only)] 1- 1...N
ids_properties/provenance/node(i1)/reference(i2)/name Reference name {constant} STR_0D
ids_properties/provenance/node(i1)/reference(i2)/timestamp Date and time (UTC) at which the reference was created, expressed in a human readable form (ISO 8601) : the format of the string shall be : YYYY-MM-DDTHH:MM:SSZ. Example : 2020-07-24T14:19:00Z {constant} STR_0D
ids_properties/plugins
Lifecycle status: alpha since version 3.39.0
Information about the plugins used to write/read this IDS. This structure is filled automatically by the Access Layer at GET/PUT time, no need to fill it via a user program.. Introduced after DD version 3.38.1 structure
ids_properties/plugins/node(i1) Set of IDS nodes for which a plugin has been applied {constant} array of structures [max_size=20 (limited in MDS+ backend only)] 1- 1...N
ids_properties/plugins/node(i1)/path Path of the node within the IDS, following the syntax given in the link below. If empty, means the plugin applies to the whole IDS. Click here for further documentation. {constant} STR_0D
ids_properties/plugins/node(i1)/put_operation(i2) Plugins used to PUT a node (potentially, multiple plugins can be applied, if so they are listed by order of application) array of structures [max_size=10 (limited in MDS+ backend only)] 1- 1...N
ids_properties/plugins/node(i1)/put_operation(i2)/name Name of software used {constant} STR_0D
ids_properties/plugins/node(i1)/put_operation(i2)/description Short description of the software (type, purpose) {constant}. Introduced after DD version 3.38.1 STR_0D
ids_properties/plugins/node(i1)/put_operation(i2)/commit Unique commit reference of software {constant} STR_0D
ids_properties/plugins/node(i1)/put_operation(i2)/version Unique version (tag) of software {constant} STR_0D
ids_properties/plugins/node(i1)/put_operation(i2)/repository URL of software repository {constant} STR_0D
ids_properties/plugins/node(i1)/put_operation(i2)/parameters List of the code specific parameters in XML format {constant} STR_0D
ids_properties/plugins/node(i1)/readback(i2) Plugins to be used to read back a node (potentially, multiple plugins can be applied, listed in reverse order of application) array of structures [max_size=10 (limited in MDS+ backend only)] 1- 1...N
ids_properties/plugins/node(i1)/readback(i2)/name Name of software used {constant} STR_0D
ids_properties/plugins/node(i1)/readback(i2)/description Short description of the software (type, purpose) {constant}. Introduced after DD version 3.38.1 STR_0D
ids_properties/plugins/node(i1)/readback(i2)/commit Unique commit reference of software {constant} STR_0D
ids_properties/plugins/node(i1)/readback(i2)/version Unique version (tag) of software {constant} STR_0D
ids_properties/plugins/node(i1)/readback(i2)/repository URL of software repository {constant} STR_0D
ids_properties/plugins/node(i1)/readback(i2)/parameters List of the code specific parameters in XML format {constant} STR_0D
ids_properties/plugins/node(i1)/get_operation(i2) Plugins actually used to read back a node (potentially, multiple plugins can be applied, listed in reverse order of application). This information is filled by the plugin infrastructure during the GET operation. array of structures [max_size=10 (limited in MDS+ backend only)] 1- 1...N
ids_properties/plugins/node(i1)/get_operation(i2)/name Name of software used {constant} STR_0D
ids_properties/plugins/node(i1)/get_operation(i2)/description Short description of the software (type, purpose) {constant}. Introduced after DD version 3.38.1 STR_0D
ids_properties/plugins/node(i1)/get_operation(i2)/commit Unique commit reference of software {constant} STR_0D
ids_properties/plugins/node(i1)/get_operation(i2)/version Unique version (tag) of software {constant} STR_0D
ids_properties/plugins/node(i1)/get_operation(i2)/repository URL of software repository {constant} STR_0D
ids_properties/plugins/node(i1)/get_operation(i2)/parameters List of the code specific parameters in XML format {constant} STR_0D
ids_properties/plugins/infrastructure_put Plugin infrastructure used to PUT the data structure
ids_properties/plugins/infrastructure_put/name Name of software used {constant} STR_0D
ids_properties/plugins/infrastructure_put/description Short description of the software (type, purpose) {constant}. Introduced after DD version 3.38.1 STR_0D
ids_properties/plugins/infrastructure_put/commit Unique commit reference of software {constant} STR_0D
ids_properties/plugins/infrastructure_put/version Unique version (tag) of software {constant} STR_0D
ids_properties/plugins/infrastructure_put/repository URL of software repository {constant} STR_0D
ids_properties/plugins/infrastructure_get Plugin infrastructure used to GET the data structure
ids_properties/plugins/infrastructure_get/name Name of software used {constant} STR_0D
ids_properties/plugins/infrastructure_get/description Short description of the software (type, purpose) {constant}. Introduced after DD version 3.38.1 STR_0D
ids_properties/plugins/infrastructure_get/commit Unique commit reference of software {constant} STR_0D
ids_properties/plugins/infrastructure_get/version Unique version (tag) of software {constant} STR_0D
ids_properties/plugins/infrastructure_get/repository URL of software repository {constant} STR_0D
e_field_critical_definition Definition chosen for the critical electric field (in global_quantities, profiles_1d and ggd). Available options (refer to the children of this identifier structure) :
Name Index Description
free 1 Critical electric field calculated from free electrons only (“Connor-Hastie” critical field). See eq (1) in M.N. Rosenbluth and S.V. Putvinski 1997 Nucl. Fusion 37 1355
all 2 Critical electric field calculated with total (free+bound) electrons. See eq (19) in M.N. Rosenbluth and S.V. Putvinski 1997 Nucl. Fusion 37 1355
structure
e_field_critical_definition/name Short string identifier {constant} STR_0D
e_field_critical_definition/index Integer identifier (enumeration index within a list). Private identifier values must be indicated by a negative index. {constant} INT_0D
e_field_critical_definition/description Verbose description {constant} STR_0D
momentum_critical_avalanche_definition Definition chosen for the critical momentum for avalanche, Compton and tritium (in global_quantities, profiles_1d and ggd). Available options (refer to the children of this identifier structure) :
Name Index Description
hoppe21 1 Critical momentum for avalanche, Compton and tritium, see M. Hoppe 2021 Computer Physics Communications 268 108098. Given by Eq. (C.24)
structure
momentum_critical_avalanche_definition/name Short string identifier {constant} STR_0D
momentum_critical_avalanche_definition/index Integer identifier (enumeration index within a list). Private identifier values must be indicated by a negative index. {constant} INT_0D
momentum_critical_avalanche_definition/description Verbose description {constant} STR_0D
momentum_critical_hot_tail_definition Definition chosen for the critical momentum for hot tail (in global_quantities, profiles_1d and ggd). Available options (refer to the children of this identifier structure) :
Name Index Description
putvinski97 1 Critical momentum for hot tail, see M.N. Rosenbluth and S.V. Putvinski 1997 Nucl. Fusion 37 1355, the definition is given by Eq. (6)
structure
momentum_critical_hot_tail_definition/name Short string identifier {constant} STR_0D
momentum_critical_hot_tail_definition/index Integer identifier (enumeration index within a list). Private identifier values must be indicated by a negative index. {constant} INT_0D
momentum_critical_hot_tail_definition/description Verbose description {constant} STR_0D
global_quantities Global quantities structure
global_quantities/current_tor(:)
Lifecycle status: obsolescent since version 3.42.0
Total runaway current (toroidal component) {dynamic} [A] FLT_1D 1- time
global_quantities/current_phi(:) Total runaway current (toroidal component) {dynamic} [A] FLT_1D 1- time
global_quantities/energy_kinetic(:) Total runaway kinetic energy {dynamic} [J] FLT_1D 1- time
global_quantities/volume_average Volume average runaways parameters structure
global_quantities/volume_average/density(:) Runaway electrons density {dynamic} [m^-3] FLT_1D 1- time
global_quantities/volume_average/current_density(:) Runaways parallel current density = average(j.B) / B0, where B0 = runaway_electrons/vacuum_toroidal_field/b0 {dynamic} [A.m^-2] FLT_1D 1- time
global_quantities/volume_average/e_field_dreicer(:) Dreicer electric field (parallel to magnetic field) {dynamic} [V.m^-1] FLT_1D 1- time
global_quantities/volume_average/e_field_critical(:) Critical electric field {dynamic} [V.m^-1] FLT_1D 1- time
global_quantities/volume_average/energy_density_kinetic(:) Runaways kinetic mean energy density {dynamic} [J.m^-3] FLT_1D 1- time
global_quantities/volume_average/pitch_angle(:) Average pitch angle of the runaways distribution function (v_parallel/|v|) {dynamic} [-] FLT_1D 1- time
global_quantities/volume_average/momentum_critical_avalanche(:) Critical momentum for avalanche, Compton and tritium {dynamic} [kg.m^-1.s^-1] FLT_1D 1- time
global_quantities/volume_average/momentum_critical_hot_tail(:) Critical momentum for hot tail {dynamic} [kg.m^-1.s^-1] FLT_1D 1- time
global_quantities/volume_average/ddensity_dt_total(:) Total source of runaway electrons {dynamic} [m^-3.s^-1] FLT_1D 1- time
global_quantities/volume_average/ddensity_dt_compton(:) Compton source of runaway electrons {dynamic} [m^-3.s^-1] FLT_1D 1- time
global_quantities/volume_average/ddensity_dt_tritium(:) Tritium source of runaway electrons {dynamic} [m^-3.s^-1] FLT_1D 1- time
global_quantities/volume_average/ddensity_dt_hot_tail(:) Hot tail source of runaway electrons {dynamic} [m^-3.s^-1] FLT_1D 1- time
global_quantities/volume_average/ddensity_dt_dreicer(:) Dreicer source of runaway electrons {dynamic} [m^-3.s^-1] FLT_1D 1- time
profiles_1d(itime) Radial flux surface averaged profiles for a set of time slices {dynamic} array of structures 1- profiles_1d(itime)/time
profiles_1d(itime)/grid Radial grid structure
profiles_1d(itime)/grid/rho_tor_norm(:) Normalised toroidal flux coordinate. The normalizing value for rho_tor_norm, is the toroidal flux coordinate at the equilibrium boundary (LCFS or 99.x % of the LCFS in case of a fixed boundary equilibium calculation, see time_slice/boundary/b_flux_pol_norm in the equilibrium IDS) {dynamic} [-] FLT_1D 1- 1...N
profiles_1d(itime)/grid/rho_tor(:) Toroidal flux coordinate = sqrt(phi/(pi*b0)), where the toroidal magnetic field, b0, corresponds to that stored in vacuum_toroidal_field/b0 and pi can be found in the IMAS constants {dynamic} [m] FLT_1D 1- profiles_1d(itime)/grid/rho_tor_norm
profiles_1d(itime)/grid/rho_pol_norm(:) Normalised poloidal flux coordinate = sqrt((psi(rho)-psi(magnetic_axis)) / (psi(LCFS)-psi(magnetic_axis))) {dynamic} [-] FLT_1D 1- profiles_1d(itime)/grid/rho_tor_norm
profiles_1d(itime)/grid/psi(:) Poloidal magnetic flux {dynamic} [Wb]. This quantity is COCOS-dependent, with the following transformation :
Label Expression
psi_like .fact_psi
FLT_1D 1- profiles_1d(itime)/grid/rho_tor_norm
profiles_1d(itime)/grid/volume(:) Volume enclosed inside the magnetic surface {dynamic} [m^3] FLT_1D 1- profiles_1d(itime)/grid/rho_tor_norm
profiles_1d(itime)/grid/area(:) Cross-sectional area of the flux surface {dynamic} [m^2] FLT_1D 1- profiles_1d(itime)/grid/rho_tor_norm
profiles_1d(itime)/grid/surface(:) Surface area of the toroidal flux surface {dynamic} [m^2] FLT_1D 1- profiles_1d(itime)/grid/rho_tor_norm
profiles_1d(itime)/grid/psi_magnetic_axis Value of the poloidal magnetic flux at the magnetic axis (useful to normalize the psi array values when the radial grid doesn't go from the magnetic axis to the plasma boundary) {dynamic} [Wb] FLT_0D
profiles_1d(itime)/grid/psi_boundary Value of the poloidal magnetic flux at the plasma boundary (useful to normalize the psi array values when the radial grid doesn't go from the magnetic axis to the plasma boundary) {dynamic} [Wb] FLT_0D
profiles_1d(itime)/density(:) Runaway electrons density {dynamic} [m^-3] FLT_1D 1- profiles_1d(itime)/grid/rho_tor_norm
profiles_1d(itime)/current_density(:) Runaways parallel current density = average(j.B) / B0, where B0 = runaway_electrons/vacuum_toroidal_field/b0 {dynamic} [A.m^-2] FLT_1D 1- profiles_1d(itime)/grid/rho_tor_norm
profiles_1d(itime)/e_field_dreicer(:) Dreicer electric field (parallel to B) {dynamic} [V.m^-1] FLT_1D 1- profiles_1d(itime)/grid/rho_tor_norm
profiles_1d(itime)/e_field_critical(:) Critical electric field {dynamic} [V.m^-1] FLT_1D 1- profiles_1d(itime)/grid/rho_tor_norm
profiles_1d(itime)/energy_density_kinetic(:) Runaways kinetic mean energy density {dynamic} [J.m^-3] FLT_1D 1- profiles_1d(itime)/grid/rho_tor_norm
profiles_1d(itime)/pitch_angle(:) Average pitch angle of the runaways distribution function (v_parallel/|v|) {dynamic} [-] FLT_1D 1- profiles_1d(itime)/grid/rho_tor_norm
profiles_1d(itime)/momentum_critical_avalanche(:) Critical momentum for avalanche, Compton and tritium {dynamic} [kg.m^-1.s^-1] FLT_1D 1- profiles_1d(itime)/grid/rho_tor_norm
profiles_1d(itime)/momentum_critical_hot_tail(:) Critical momentum for hot tail {dynamic} [kg.m^-1.s^-1] FLT_1D 1- profiles_1d(itime)/grid/rho_tor_norm
profiles_1d(itime)/ddensity_dt_total(:) Total source of runaway electrons {dynamic} [m^-3.s^-1] FLT_1D 1- profiles_1d(itime)/grid/rho_tor_norm
profiles_1d(itime)/ddensity_dt_compton(:) Compton source of runaway electrons {dynamic} [m^-3.s^-1] FLT_1D 1- profiles_1d(itime)/grid/rho_tor_norm
profiles_1d(itime)/ddensity_dt_tritium(:) Tritium source of runaway electrons {dynamic} [m^-3.s^-1] FLT_1D 1- profiles_1d(itime)/grid/rho_tor_norm
profiles_1d(itime)/ddensity_dt_hot_tail(:) Hot tail source of runaway electrons {dynamic} [m^-3.s^-1] FLT_1D 1- profiles_1d(itime)/grid/rho_tor_norm
profiles_1d(itime)/ddensity_dt_dreicer(:) Dreicer source of runaway electrons {dynamic} [m^-3.s^-1] FLT_1D 1- profiles_1d(itime)/grid/rho_tor_norm
profiles_1d(itime)/transport_perpendicular Effective perpendicular transport to the magnetic field for runaways structure
profiles_1d(itime)/transport_perpendicular/d(:) Effective diffusivity {dynamic} [m^2.s^-1] FLT_1D 1- profiles_1d(itime)/grid/rho_tor_norm
profiles_1d(itime)/transport_perpendicular/v(:) Effective convection {dynamic} [m.s^-1] FLT_1D 1- profiles_1d(itime)/grid/rho_tor_norm
profiles_1d(itime)/transport_perpendicular/flux(:) Flux {dynamic} [m^-2.s^-1] FLT_1D 1- profiles_1d(itime)/grid/rho_tor_norm
profiles_1d(itime)/time Time {dynamic} [s] FLT_0D
grid_ggd(itime) Grid (using the Generic Grid Description), for various time slices {dynamic} array of structures 1- grid_ggd(itime)/time
grid_ggd(itime)/identifier Grid identifier. Available options (refer to the children of this identifier structure) :
Name Index Description
unspecified 0 unspecified
linear 1 Linear
cylinder 2 Cylindrical geometry (straight in axial direction)
limiter 3 Limiter
SN 4 Single null
CDN 5 Connected double null
DDN_bottom 6 Disconnected double null with inner X-point below the midplane
DDN_top 7 Disconnected double null with inner X-point above the midplane
annulus 8 Annular geometry (not necessarily with straight axis)
stellarator_island 9 Stellarator island geometry
structured_spaces 10 Structured grid represented with multiple spaces of dimension 1
LFS_snowflake_minus 11 Snowflake grid with secondary x point on the low field side, and the secondary separatrix on top of the primary
LFS_snowflake_plus 12 Snowflake grid with secondary x point to the right of the primary, and the secondary separatrix below the primary
reference 100 Refers to a GGD described in another IDS indicated by grid_path. In such a case, do not fill the grid_ggd node of this IDS
structure
grid_ggd(itime)/identifier/name Short string identifier {dynamic} STR_0D
grid_ggd(itime)/identifier/index Integer identifier (enumeration index within a list). Private identifier values must be indicated by a negative index. {dynamic} INT_0D
grid_ggd(itime)/identifier/description Verbose description {dynamic} STR_0D
grid_ggd(itime)/path Path of the grid, including the IDS name, in case of implicit reference to a grid_ggd node described in another IDS. To be filled only if the grid is not described explicitly in this grid_ggd structure. Example syntax: IDS::wall/0/description_ggd(1)/grid_ggd, means that the grid is located in the wall IDS, occurrence 0, with relative path description_ggd(1)/grid_ggd, using Fortran index convention (here : first index of the array) {dynamic} STR_0D
grid_ggd(itime)/space(i1) Set of grid spaces Click here for further documentation (or contact imas@iter.org if you can't access this page). array of structures 1- 1...N
grid_ggd(itime)/space(i1)/identifier Space identifier. Available options (refer to the children of this identifier structure) :
Name Index Description
unspecified 0 unspecified
primary_standard 1 Primary space defining the standard grid
primary_staggered 2 Primary space defining a grid staggered with respect to the primary standard space
secondary_structured 3 Secondary space defining additional dimensions that extend the primary standard space in a structured way
structure
grid_ggd(itime)/space(i1)/identifier/name Short string identifier {dynamic} STR_0D
grid_ggd(itime)/space(i1)/identifier/index Integer identifier (enumeration index within a list). Private identifier values must be indicated by a negative index. {dynamic} INT_0D
grid_ggd(itime)/space(i1)/identifier/description Verbose description {dynamic} STR_0D
grid_ggd(itime)/space(i1)/geometry_type Type of space geometry (0: standard, 1:Fourier, >1: Fourier with periodicity) structure
grid_ggd(itime)/space(i1)/geometry_type/name Short string identifier {dynamic} STR_0D
grid_ggd(itime)/space(i1)/geometry_type/index Integer identifier (enumeration index within a list). Private identifier values must be indicated by a negative index. {dynamic} INT_0D
grid_ggd(itime)/space(i1)/geometry_type/description Verbose description {dynamic} STR_0D
grid_ggd(itime)/space(i1)/coordinates_type(:) Type of coordinates describing the physical space, for every coordinate of the space. The size of this node therefore defines the dimension of the space. The meaning of these predefined integer constants can be found in the Data Dictionary under utilities/coordinate_identifier.xml Click here for further documentation. {dynamic} INT_1D 1- 1...N
grid_ggd(itime)/space(i1)/objects_per_dimension(i2) Definition of the space objects for every dimension (from one to the dimension of the highest-dimensional objects). The index correspond to 1=nodes, 2=edges, 3=faces, 4=cells/volumes, .... For every index, a collection of objects of that dimension is described. array of structures 1- 1...N
grid_ggd(itime)/space(i1)/objects_per_dimension(i2)/object(i3) Set of objects for a given dimension array of structures 1- 1...N
grid_ggd(itime)/space(i1)/objects_per_dimension(i2)/object(i3)/boundary(i4) Set of (n-1)-dimensional objects defining the boundary of this n-dimensional object array of structures 1- 1...N
grid_ggd(itime)/space(i1)/objects_per_dimension(i2)/object(i3)/boundary(i4)/index Index of this (n-1)-dimensional boundary object {dynamic} INT_0D
grid_ggd(itime)/space(i1)/objects_per_dimension(i2)/object(i3)/boundary(i4)/neighbours(:) List of indices of the n-dimensional objects adjacent to the given n-dimensional object. An object can possibly have multiple neighbours on a boundary {dynamic} INT_1D 1- 1...N
grid_ggd(itime)/space(i1)/objects_per_dimension(i2)/object(i3)/geometry(:) Geometry data associated with the object, its detailed content is defined by ../../geometry_content. Its dimension depends on the type of object, geometry and coordinate considered. {dynamic} [mixed] FLT_1D 1- 1...N
grid_ggd(itime)/space(i1)/objects_per_dimension(i2)/object(i3)/nodes(:) List of nodes forming this object (indices to objects_per_dimension(1)%object(:) in Fortran notation) {dynamic} INT_1D 1- 1...N
grid_ggd(itime)/space(i1)/objects_per_dimension(i2)/object(i3)/measure Measure of the space object, i.e. physical size (length for 1d, area for 2d, volume for 3d objects,...) {dynamic} [m^dimension] FLT_0D
grid_ggd(itime)/space(i1)/objects_per_dimension(i2)/object(i3)/geometry_2d(:,:) 2D geometry data associated with the object. Its dimension depends on the type of object, geometry and coordinate considered. Typically, the first dimension represents the object coordinates, while the second dimension would represent the values of the various degrees of freedom of the finite element attached to the object. {dynamic} [mixed]. Introduced after DD version 3.35.0 FLT_2D 1- 1...N
2- 1...N
grid_ggd(itime)/space(i1)/objects_per_dimension(i2)/geometry_content Content of the ../object/geometry node for this dimension. Introduced after DD version 3.33.0. Available options (refer to the children of this identifier structure) :
Name Index Description
unspecified 0 unspecified
node_coordinates 1 For nodes : node coordinates
node_coordinates_connection 11 For nodes : node coordinates, then connection length, and distance in the poloidal plane to the nearest solid surface outside the separatrix
edge_areas 21 For edges : contains 3 surface areas after uniform extension in the third dimension of the edges. Geometry(1) and geometry(2) are the projections of that area along the local poloidal and radial coordinate respectively. Geometry(3) is the full surface area of the extended edge
face_indices_volume 31 For faces : coordinates indices (ix, iy) of the face within the structured grid of the code. The third element contains the volume after uniform extension in the third dimension of the faces
face_indices_volume_connection 32 For faces : coordinates indices (ix, iy) of the face within the structured grid of the code. The third element contains the volume after uniform extension in the third dimension of the faces. The fourth element is the connection length. The fifth element is the distance in the poloidal plane to the nearest solid surface outside the separatrix
structure
grid_ggd(itime)/space(i1)/objects_per_dimension(i2)/geometry_content/name Short string identifier {dynamic} STR_0D
grid_ggd(itime)/space(i1)/objects_per_dimension(i2)/geometry_content/index Integer identifier (enumeration index within a list). Private identifier values must be indicated by a negative index. {dynamic} INT_0D
grid_ggd(itime)/space(i1)/objects_per_dimension(i2)/geometry_content/description Verbose description {dynamic} STR_0D
grid_ggd(itime)/grid_subset(i1) Grid subsets array of structures 1- 1...N
grid_ggd(itime)/grid_subset(i1)/identifier Grid subset identifier Click here for further documentation.. Available options (refer to the children of this identifier structure) :
Name Index Description
unspecified 0 unspecified
nodes 1 All nodes (0D) belonging to the associated spaces, implicit declaration (no need to replicate the grid elements in the grid_subset structure). In case of a structured grid represented with multiple 1D spaces, the order of the implicit elements in the grid_subset follows Fortran ordering, i.e. iterate always on nodes of the first space first, then move to the second node of the second space, ... : [((s1_1 to s1_end), s2_1, s3_1 ... sN_1), (((s1_1 to s1_end), s2_2, s3_1, ... sN_1)), ... ((s1_1 to s1_end), s2_end, s3_end ... sN_end)]
edges 2 All edges (1D) belonging to the associated spaces, implicit declaration (no need to replicate the grid elements in the grid_subset structure)
x_aligned_edges 3 All x-aligned (poloidally) aligned edges belonging to the associated spaces
y_aligned_edges 4 All y-aligned (radially) aligned edges belonging to the associated spaces
cells 5 All cells (2D) belonging to the associated spaces, implicit declaration (no need to replicate the grid elements in the grid_subset structure)
x_points 6 Nodes defining x-points
core_cut 7 y-aligned edges inside the separatrix connecting to the active x-point
PFR_cut 8 y-aligned edges in the private flux region connecting to the active x-point
outer_throat 9 y-aligned edges in the outer SOL connecting to the active x-point
inner_throat 10 y-aligned edges in the inner SOL connecting to the active x-point
outer_midplane 11 y-aligned edges connecting to the node closest to outer midplane on the separatrix
inner_midplane 12 y-aligned edges connecting to the node closest to inner midplane on the separatrix
outer_target 13 y-aligned edges defining the outer target
inner_target 14 y-aligned edges defining the inner target
core_boundary 15 Innermost x-aligned edges
separatrix 16 x-aligned edges defining the active separatrix
main_chamber_wall 17 x-aligned edges defining main chamber wall outside of the divertor regions
outer_baffle 18 x-aligned edges defining the chamber wall of the outer active divertor region
inner_baffle 19 x-aligned edges defining the chamber wall of the inner active divertor region
outer_PFR_wall 20 x-aligned edges defining the private flux region wall of the outer active divertor region
inner_PFR_wall 21 x-aligned edges defining the private flux region wall of the inner active divertor region
core 22 Cells inside the active separatrix
sol 23 Cells defining the main SOL outside of the divertor regions
outer_divertor 24 Cells defining the outer divertor region
inner_divertor 25 Cells defining the inner divertor region
core_sol 26 x-aligned edges defining part of active separatrix separating core and sol
full_main_chamber_wall 27 main_chamber_wall + outer_baffle(s) + inner_baffle(s)
full_PFR_wall 28 outer_PFR__wall(s) + inner_PFR_wall(s)
core_cut_X2 29 y-aligned edges inside the separatrix connecting to the non-active x-point
PFR_cut_X2 30 y-aligned edges in the private flux region connecting to the non-active x-point
outer_throat_X2 31 y-aligned edges in the outer SOL connecting to the non-active x-point
inner_throat_X2 32 y-aligned edges in the inner SOL connecting to the non-active x-point
separatrix_2 33 x-aligned edges defining the non-active separatrix
outer_baffle_2 34 x-aligned edges defining the chamber wall of the outer non-active divertor region
inner_baffle_2 35 x-aligned edges defining the chamber wall of the inner non-active divertor region
outer_PFR_wall_2 36 x-aligned edges defining the private flux region wall of the outer non-active divertor region
inner_PFR_wall_2 37 x-aligned edges defining the private flux region wall of the inner non-active divertor region
intra_sep 38 Cells between the two separatrices
outer_divertor_2 39 Cells defining the outer inactive divertor region
inner_divertor_2 40 Cells defining the inner inactive divertor region
outer_target_2 41 y-aligned edges defining the outer inactive target
inner_target_2 42 y-aligned edges defining the inner inactive target
volumes 43 All volumes (3D) belonging to the associated spaces, implicit declaration (no need to replicate the grid elements in the grid_subset structure)
full_wall 44 All edges defining walls, baffles, and targets
outer_sf_leg_entrance_1 45 y-aligned edges defining the SOL entrance of the first snowflake outer leg
outer_sf_leg_entrance_2 46 y-aligned edges defining the SOL entrance of the third snowflake outer leg
outer_sf_pfr_connection_1 47 y-aligned edges defining the connection between the outer snowflake entrance and third leg
outer_sf_pfr_connection_2 48 y-aligned edges defining the connection between the outer snowflake first and second leg
magnetic_axis 100 Point corresponding to the magnetic axis
outer_mid_plane_separatrix 101 Point on active separatrix at outer mid-plane
inner_mid_plane_separatrix 102 Point on active separatrix at inner mid-plane
outer_target_separatrix 103 Point on active separatrix at outer active target
inner_target_separatrix 104 Point on active separatrix at inner active target
outer_target_separatrix_2 105 Point on non-active separatrix at outer non-active target
inner_target_separatrix_2 106 Point on non-active separatrix at inner non-active target
structure
grid_ggd(itime)/grid_subset(i1)/identifier/name Short string identifier {dynamic} STR_0D
grid_ggd(itime)/grid_subset(i1)/identifier/index Integer identifier (enumeration index within a list). Private identifier values must be indicated by a negative index. {dynamic} INT_0D
grid_ggd(itime)/grid_subset(i1)/identifier/description Verbose description {dynamic} STR_0D
grid_ggd(itime)/grid_subset(i1)/dimension Space dimension of the grid subset elements, using the convention 1=nodes, 2=edges, 3=faces, 4=cells/volumes {dynamic} INT_0D
grid_ggd(itime)/grid_subset(i1)/element(i2) Set of elements defining the grid subset. An element is defined by a combination of objects from potentially all spaces array of structures 1- 1...N
grid_ggd(itime)/grid_subset(i1)/element(i2)/object(i3) Set of objects defining the element array of structures 1- 1...N
grid_ggd(itime)/grid_subset(i1)/element(i2)/object(i3)/space Index of the space from which that object is taken {dynamic} INT_0D
grid_ggd(itime)/grid_subset(i1)/element(i2)/object(i3)/dimension Dimension of the object - using the convention 1=nodes, 2=edges, 3=faces, 4=cells/volumes {dynamic} INT_0D
grid_ggd(itime)/grid_subset(i1)/element(i2)/object(i3)/index Object index {dynamic} INT_0D
grid_ggd(itime)/grid_subset(i1)/base(i2) Set of bases for the grid subset. For each base, the structure describes the projection of the base vectors on the canonical frame of the grid. array of structures 1- 1...N
grid_ggd(itime)/grid_subset(i1)/base(i2)/jacobian(:) Metric Jacobian {dynamic} [mixed] FLT_1D 1- grid_ggd(itime)/grid_subset(i1)/element
grid_ggd(itime)/grid_subset(i1)/base(i2)/tensor_covariant(:,:,:) Covariant metric tensor, given on each element of the subgrid (first dimension) {dynamic} [mixed] FLT_3D 1- grid_ggd(itime)/grid_subset(i1)/element
2- 1...N
3- 1...N
grid_ggd(itime)/grid_subset(i1)/base(i2)/tensor_contravariant(:,:,:) Contravariant metric tensor, given on each element of the subgrid (first dimension) {dynamic} [mixed] FLT_3D 1- grid_ggd(itime)/grid_subset(i1)/element
2- 1...N
3- 1...N
grid_ggd(itime)/grid_subset(i1)/metric Metric of the canonical frame onto Cartesian coordinates structure
grid_ggd(itime)/grid_subset(i1)/metric/jacobian(:) Metric Jacobian {dynamic} [mixed] FLT_1D 1- grid_ggd(itime)/grid_subset(i1)/element
grid_ggd(itime)/grid_subset(i1)/metric/tensor_covariant(:,:,:) Covariant metric tensor, given on each element of the subgrid (first dimension) {dynamic} [mixed] FLT_3D 1- grid_ggd(itime)/grid_subset(i1)/element
2- 1...N
3- 1...N
grid_ggd(itime)/grid_subset(i1)/metric/tensor_contravariant(:,:,:) Contravariant metric tensor, given on each element of the subgrid (first dimension) {dynamic} [mixed] FLT_3D 1- grid_ggd(itime)/grid_subset(i1)/element
2- 1...N
3- 1...N
grid_ggd(itime)/time Time {dynamic} [s] FLT_0D
ggd_fluid(itime) Fluid quantities represented using the general grid description for 2D or 3D description {dynamic} array of structures 1- ggd_fluid(itime)/time
ggd_fluid(itime)/density(i1) Runaway electrons density, given on various grid subsets [m^-3] array of structures 1- 1...N
ggd_fluid(itime)/density(i1)/grid_index Index of the grid used to represent this quantity {dynamic} INT_0D
ggd_fluid(itime)/density(i1)/grid_subset_index Index of the grid subset the data is provided on. Corresponds to the index used in the grid subset definition: grid_subset(:)/identifier/index {dynamic} INT_0D
ggd_fluid(itime)/density(i1)/values(:) One scalar value is provided per element in the grid subset. {dynamic} [as_parent] FLT_1D 1- 1...N
ggd_fluid(itime)/density(i1)/coefficients(:,:) Interpolation coefficients, to be used for a high precision evaluation of the physical quantity with finite elements, provided per element in the grid subset (first dimension). {dynamic} [as_parent] FLT_2D 1- ggd_fluid(itime)/density(i1)/values
2- 1...N
ggd_fluid(itime)/current_density(i1) Runaways parallel current density = average(j.B) / B0, where B0 = runaway_electrons/vacuum_toroidal_field/b0, given on various grid subsets [A.m^-2] array of structures 1- 1...N
ggd_fluid(itime)/current_density(i1)/grid_index Index of the grid used to represent this quantity {dynamic} INT_0D
ggd_fluid(itime)/current_density(i1)/grid_subset_index Index of the grid subset the data is provided on. Corresponds to the index used in the grid subset definition: grid_subset(:)/identifier/index {dynamic} INT_0D
ggd_fluid(itime)/current_density(i1)/values(:) One scalar value is provided per element in the grid subset. {dynamic} [as_parent] FLT_1D 1- 1...N
ggd_fluid(itime)/current_density(i1)/coefficients(:,:) Interpolation coefficients, to be used for a high precision evaluation of the physical quantity with finite elements, provided per element in the grid subset (first dimension). {dynamic} [as_parent] FLT_2D 1- ggd_fluid(itime)/current_density(i1)/values
2- 1...N
ggd_fluid(itime)/e_field_dreicer(i1) Dreicer electric field (parallel to B), given on various grid subsets [V.m^-1] array of structures 1- 1...N
ggd_fluid(itime)/e_field_dreicer(i1)/grid_index Index of the grid used to represent this quantity {dynamic} INT_0D
ggd_fluid(itime)/e_field_dreicer(i1)/grid_subset_index Index of the grid subset the data is provided on. Corresponds to the index used in the grid subset definition: grid_subset(:)/identifier/index {dynamic} INT_0D
ggd_fluid(itime)/e_field_dreicer(i1)/values(:) One scalar value is provided per element in the grid subset. {dynamic} [as_parent] FLT_1D 1- 1...N
ggd_fluid(itime)/e_field_dreicer(i1)/coefficients(:,:) Interpolation coefficients, to be used for a high precision evaluation of the physical quantity with finite elements, provided per element in the grid subset (first dimension). {dynamic} [as_parent] FLT_2D 1- ggd_fluid(itime)/e_field_dreicer(i1)/values
2- 1...N
ggd_fluid(itime)/e_field_critical(i1) Critical electric field, given on various grid subsets [V.m^-1] array of structures 1- 1...N
ggd_fluid(itime)/e_field_critical(i1)/grid_index Index of the grid used to represent this quantity {dynamic} INT_0D
ggd_fluid(itime)/e_field_critical(i1)/grid_subset_index Index of the grid subset the data is provided on. Corresponds to the index used in the grid subset definition: grid_subset(:)/identifier/index {dynamic} INT_0D
ggd_fluid(itime)/e_field_critical(i1)/values(:) One scalar value is provided per element in the grid subset. {dynamic} [as_parent] FLT_1D 1- 1...N
ggd_fluid(itime)/e_field_critical(i1)/coefficients(:,:) Interpolation coefficients, to be used for a high precision evaluation of the physical quantity with finite elements, provided per element in the grid subset (first dimension). {dynamic} [as_parent] FLT_2D 1- ggd_fluid(itime)/e_field_critical(i1)/values
2- 1...N
ggd_fluid(itime)/energy_density_kinetic(i1) Runaways kinetic energy density, given on various grid subsets [J.m^-3] array of structures 1- 1...N
ggd_fluid(itime)/energy_density_kinetic(i1)/grid_index Index of the grid used to represent this quantity {dynamic} INT_0D
ggd_fluid(itime)/energy_density_kinetic(i1)/grid_subset_index Index of the grid subset the data is provided on. Corresponds to the index used in the grid subset definition: grid_subset(:)/identifier/index {dynamic} INT_0D
ggd_fluid(itime)/energy_density_kinetic(i1)/values(:) One scalar value is provided per element in the grid subset. {dynamic} [as_parent] FLT_1D 1- 1...N
ggd_fluid(itime)/energy_density_kinetic(i1)/coefficients(:,:) Interpolation coefficients, to be used for a high precision evaluation of the physical quantity with finite elements, provided per element in the grid subset (first dimension). {dynamic} [as_parent] FLT_2D 1- ggd_fluid(itime)/energy_density_kinetic(i1)/values
2- 1...N
ggd_fluid(itime)/pitch_angle(i1) Average pitch angle of the runaways distribution function (v_parallel/|v|), given on various grid subsets [-] array of structures 1- 1...N
ggd_fluid(itime)/pitch_angle(i1)/grid_index Index of the grid used to represent this quantity {dynamic} INT_0D
ggd_fluid(itime)/pitch_angle(i1)/grid_subset_index Index of the grid subset the data is provided on. Corresponds to the index used in the grid subset definition: grid_subset(:)/identifier/index {dynamic} INT_0D
ggd_fluid(itime)/pitch_angle(i1)/values(:) One scalar value is provided per element in the grid subset. {dynamic} [as_parent] FLT_1D 1- 1...N
ggd_fluid(itime)/pitch_angle(i1)/coefficients(:,:) Interpolation coefficients, to be used for a high precision evaluation of the physical quantity with finite elements, provided per element in the grid subset (first dimension). {dynamic} [as_parent] FLT_2D 1- ggd_fluid(itime)/pitch_angle(i1)/values
2- 1...N
ggd_fluid(itime)/momentum_critical_avalanche(i1) Critical momentum for avalanche, Compton and tritium, given on various grid subsets [kg.m^-1.s^-1] array of structures 1- 1...N
ggd_fluid(itime)/momentum_critical_avalanche(i1)/grid_index Index of the grid used to represent this quantity {dynamic} INT_0D
ggd_fluid(itime)/momentum_critical_avalanche(i1)/grid_subset_index Index of the grid subset the data is provided on. Corresponds to the index used in the grid subset definition: grid_subset(:)/identifier/index {dynamic} INT_0D
ggd_fluid(itime)/momentum_critical_avalanche(i1)/values(:) One scalar value is provided per element in the grid subset. {dynamic} [as_parent] FLT_1D 1- 1...N
ggd_fluid(itime)/momentum_critical_avalanche(i1)/coefficients(:,:) Interpolation coefficients, to be used for a high precision evaluation of the physical quantity with finite elements, provided per element in the grid subset (first dimension). {dynamic} [as_parent] FLT_2D 1- ggd_fluid(itime)/momentum_critical_avalanche(i1)/values
2- 1...N
ggd_fluid(itime)/momentum_critical_hot_tail(i1) Critical momentum for hot tail, given on various grid subsets [kg.m^-1.s^-1] array of structures 1- 1...N
ggd_fluid(itime)/momentum_critical_hot_tail(i1)/grid_index Index of the grid used to represent this quantity {dynamic} INT_0D
ggd_fluid(itime)/momentum_critical_hot_tail(i1)/grid_subset_index Index of the grid subset the data is provided on. Corresponds to the index used in the grid subset definition: grid_subset(:)/identifier/index {dynamic} INT_0D
ggd_fluid(itime)/momentum_critical_hot_tail(i1)/values(:) One scalar value is provided per element in the grid subset. {dynamic} [as_parent] FLT_1D 1- 1...N
ggd_fluid(itime)/momentum_critical_hot_tail(i1)/coefficients(:,:) Interpolation coefficients, to be used for a high precision evaluation of the physical quantity with finite elements, provided per element in the grid subset (first dimension). {dynamic} [as_parent] FLT_2D 1- ggd_fluid(itime)/momentum_critical_hot_tail(i1)/values
2- 1...N
ggd_fluid(itime)/ddensity_dt_total(i1) Total source of runaway electrons, given on various grid subsets [m^-3.s^-1] array of structures 1- 1...N
ggd_fluid(itime)/ddensity_dt_total(i1)/grid_index Index of the grid used to represent this quantity {dynamic} INT_0D
ggd_fluid(itime)/ddensity_dt_total(i1)/grid_subset_index Index of the grid subset the data is provided on. Corresponds to the index used in the grid subset definition: grid_subset(:)/identifier/index {dynamic} INT_0D
ggd_fluid(itime)/ddensity_dt_total(i1)/values(:) One scalar value is provided per element in the grid subset. {dynamic} [as_parent] FLT_1D 1- 1...N
ggd_fluid(itime)/ddensity_dt_total(i1)/coefficients(:,:) Interpolation coefficients, to be used for a high precision evaluation of the physical quantity with finite elements, provided per element in the grid subset (first dimension). {dynamic} [as_parent] FLT_2D 1- ggd_fluid(itime)/ddensity_dt_total(i1)/values
2- 1...N
ggd_fluid(itime)/ddensity_dt_compton(i1) Compton source of runaway electrons, given on various grid subsets [m^-3.s^-1] array of structures 1- 1...N
ggd_fluid(itime)/ddensity_dt_compton(i1)/grid_index Index of the grid used to represent this quantity {dynamic} INT_0D
ggd_fluid(itime)/ddensity_dt_compton(i1)/grid_subset_index Index of the grid subset the data is provided on. Corresponds to the index used in the grid subset definition: grid_subset(:)/identifier/index {dynamic} INT_0D
ggd_fluid(itime)/ddensity_dt_compton(i1)/values(:) One scalar value is provided per element in the grid subset. {dynamic} [as_parent] FLT_1D 1- 1...N
ggd_fluid(itime)/ddensity_dt_compton(i1)/coefficients(:,:) Interpolation coefficients, to be used for a high precision evaluation of the physical quantity with finite elements, provided per element in the grid subset (first dimension). {dynamic} [as_parent] FLT_2D 1- ggd_fluid(itime)/ddensity_dt_compton(i1)/values
2- 1...N
ggd_fluid(itime)/ddensity_dt_tritium(i1) Tritium source of runaway electrons, given on various grid subsets [m^-3.s^-1] array of structures 1- 1...N
ggd_fluid(itime)/ddensity_dt_tritium(i1)/grid_index Index of the grid used to represent this quantity {dynamic} INT_0D
ggd_fluid(itime)/ddensity_dt_tritium(i1)/grid_subset_index Index of the grid subset the data is provided on. Corresponds to the index used in the grid subset definition: grid_subset(:)/identifier/index {dynamic} INT_0D
ggd_fluid(itime)/ddensity_dt_tritium(i1)/values(:) One scalar value is provided per element in the grid subset. {dynamic} [as_parent] FLT_1D 1- 1...N
ggd_fluid(itime)/ddensity_dt_tritium(i1)/coefficients(:,:) Interpolation coefficients, to be used for a high precision evaluation of the physical quantity with finite elements, provided per element in the grid subset (first dimension). {dynamic} [as_parent] FLT_2D 1- ggd_fluid(itime)/ddensity_dt_tritium(i1)/values
2- 1...N
ggd_fluid(itime)/ddensity_dt_hot_tail(i1) Hot tail source of runaway electrons, given on various grid subsets [m^-3.s^-1] array of structures 1- 1...N
ggd_fluid(itime)/ddensity_dt_hot_tail(i1)/grid_index Index of the grid used to represent this quantity {dynamic} INT_0D
ggd_fluid(itime)/ddensity_dt_hot_tail(i1)/grid_subset_index Index of the grid subset the data is provided on. Corresponds to the index used in the grid subset definition: grid_subset(:)/identifier/index {dynamic} INT_0D
ggd_fluid(itime)/ddensity_dt_hot_tail(i1)/values(:) One scalar value is provided per element in the grid subset. {dynamic} [as_parent] FLT_1D 1- 1...N
ggd_fluid(itime)/ddensity_dt_hot_tail(i1)/coefficients(:,:) Interpolation coefficients, to be used for a high precision evaluation of the physical quantity with finite elements, provided per element in the grid subset (first dimension). {dynamic} [as_parent] FLT_2D 1- ggd_fluid(itime)/ddensity_dt_hot_tail(i1)/values
2- 1...N
ggd_fluid(itime)/ddensity_dt_dreicer(i1) Dreicer source of runaway electrons, given on various grid subsets [m^-3.s^-1] array of structures 1- 1...N
ggd_fluid(itime)/ddensity_dt_dreicer(i1)/grid_index Index of the grid used to represent this quantity {dynamic} INT_0D
ggd_fluid(itime)/ddensity_dt_dreicer(i1)/grid_subset_index Index of the grid subset the data is provided on. Corresponds to the index used in the grid subset definition: grid_subset(:)/identifier/index {dynamic} INT_0D
ggd_fluid(itime)/ddensity_dt_dreicer(i1)/values(:) One scalar value is provided per element in the grid subset. {dynamic} [as_parent] FLT_1D 1- 1...N
ggd_fluid(itime)/ddensity_dt_dreicer(i1)/coefficients(:,:) Interpolation coefficients, to be used for a high precision evaluation of the physical quantity with finite elements, provided per element in the grid subset (first dimension). {dynamic} [as_parent] FLT_2D 1- ggd_fluid(itime)/ddensity_dt_dreicer(i1)/values
2- 1...N
ggd_fluid(itime)/time Time {dynamic} [s] FLT_0D
distribution Distribution function of the runaway electrons structure
distribution/gyro_type Defines how to interpret the spatial coordinates: 1 = given at the actual particle birth point; 2 =given at the gyro centre of the birth point {constant} INT_0D
distribution/ggd(itime) Distribution represented using the ggd, for various time slices {dynamic} array of structures 1- distribution/ggd(itime)/time
distribution/ggd(itime)/temperature(:) Reference temperature profile used to define the local thermal energy and the thermal velocity (for normalisation of the grid coordinates) {dynamic} [eV] FLT_1D 1- profiles_1d(itime)/grid/rho_tor_norm
distribution/ggd(itime)/expansion(i1) Distribution function expanded into a vector of successive approximations. The first element in the vector (expansion(1)) is the zeroth order distribution function, while the K:th element in the vector (expansion(K)) is the K:th correction, such that the total distribution function is a sum over all elements in the expansion vector. [(m.s^-1)^-3.m^-3] array of structures 1- 1...N
distribution/ggd(itime)/expansion(i1)/grid_subset(i2) Values of the distribution function expansion, for various grid subsets [mixed] array of structures 1- 1...N
distribution/ggd(itime)/expansion(i1)/grid_subset(i2)/grid_index Index of the grid used to represent this quantity {dynamic} INT_0D
distribution/ggd(itime)/expansion(i1)/grid_subset(i2)/grid_subset_index Index of the grid subset the data is provided on. Corresponds to the index used in the grid subset definition: grid_subset(:)/identifier/index {dynamic} INT_0D
distribution/ggd(itime)/expansion(i1)/grid_subset(i2)/values(:) One scalar value is provided per element in the grid subset. {dynamic} [as_parent] FLT_1D 1- 1...N
distribution/ggd(itime)/expansion(i1)/grid_subset(i2)/coefficients(:,:) Interpolation coefficients, to be used for a high precision evaluation of the physical quantity with finite elements, provided per element in the grid subset (first dimension). {dynamic} [as_parent] FLT_2D 1- distribution/ggd(itime)/expansion(i1)/grid_subset(i2)/values
2- 1...N
distribution/ggd(itime)/expansion_fd3v(i1) Distribution function multiplied by the volume of the local velocity cell d3v, expanded into a vector of successive approximations. The first element in the vector (expansion(1)) is the zeroth order distribution function, while the K:th element in the vector (expansion(K)) is the K:th correction, such that the total distribution function is a sum over all elements in the expansion vector. [m^-3] array of structures 1- 1...N
distribution/ggd(itime)/expansion_fd3v(i1)/grid_subset(i2) Values of the distribution function expansion, for various grid subsets [mixed] array of structures 1- 1...N
distribution/ggd(itime)/expansion_fd3v(i1)/grid_subset(i2)/grid_index Index of the grid used to represent this quantity {dynamic} INT_0D
distribution/ggd(itime)/expansion_fd3v(i1)/grid_subset(i2)/grid_subset_index Index of the grid subset the data is provided on. Corresponds to the index used in the grid subset definition: grid_subset(:)/identifier/index {dynamic} INT_0D
distribution/ggd(itime)/expansion_fd3v(i1)/grid_subset(i2)/values(:) One scalar value is provided per element in the grid subset. {dynamic} [as_parent] FLT_1D 1- 1...N
distribution/ggd(itime)/expansion_fd3v(i1)/grid_subset(i2)/coefficients(:,:) Interpolation coefficients, to be used for a high precision evaluation of the physical quantity with finite elements, provided per element in the grid subset (first dimension). {dynamic} [as_parent] FLT_2D 1- distribution/ggd(itime)/expansion_fd3v(i1)/grid_subset(i2)/values
2- 1...N
distribution/ggd(itime)/time Time {dynamic} [s] FLT_0D
distribution/markers(itime) Distribution represented by a set of markers (test particles) {dynamic} array of structures 1- distribution/markers(itime)/time
distribution/markers(itime)/coordinate_identifier(i1) Set of coordinate identifiers, coordinates on which the markers are represented [W.m^-3]. Available options (refer to the children of this identifier structure) :
Name Index Description
unspecified 0 unspecified
x 1 First cartesian coordinate in the horizontal plane
y 2 Second cartesian coordinate in the horizontal plane (grad(x) x grad(y) = grad(z))
z 3 Vertical coordinate z
r 4 Major radius
phi 5 Toroidal angle
psi 10 Poloidal magnetic flux
rho_tor 11 The square root of the toroidal flux, sqrt((Phi-Phi_axis)/pi/B0), where Phi is the toroidal flux and B0 is the vaccum magnetic field
rho_tor_norm 12 The square root of the normalised toroidal flux, sqrt((Phi-Phi_axis)/(Phi_lcf-Phi_axis)), where Phi is the toroidal flux
rho_pol 13 The square root of the poloidal flux, sqrt(psi-psi_axis), where psi is the poloidal flux
rho_pol_norm 14 The square root of the normalised poloidal flux, sqrt((psi-psi_axis)/(psi_lcf-psi_axis)), where psi is the poloidal flux
theta 20 Geometrical poloidal angle around the magnetic axis
theta_straight 21 Straight field line poloidal angle
theta_equal_arc 22 Equal-arc poloidal angle; a differential of the angle is proportional to the length of the corresponding arc in the poloidal plane.
velocity 100 Total velocity; modulus of the velocity vector
velocity_x 101 Velocity component in the x-direction
velocity_y 102 Velocity component in the y-direction
velocity_z 103 Velocity component in the z-direction
velocity_phi 104 Velocity component in the toroidal direction
velocity_parallel 105 Velocity component parallel to the magnetic field
velocity_perpendicular 106 Velocity perpendicular to the magnetic field
velocity_thermal 107 Velocity normalised to the local thermal velocity of the thermal ions (of the relevant species)
velocity_radial 108 Velocity component in the radial direction
momentum 200 Modulus of the relativistic momentum vector
momentum_parallel 201 Component of the relativistic momentum vector parallel to the magnetic field
momentum_perpendicular 202 Component of the relativistic momentum vector perpendicular to the magnetic field
canonical_momentum_phi 203 Canonical toroidal angular momentum
energy_hamiltonian 300 Hamiltonian energy, including both kinetic and potential energy
energy_kinetic 301 Kinetic energy
magnetic_moment 302 magnetic moment
lambda 400 Ratio, magnetic moment over hamiltonian energy
pitch_angle 402 Angle between the magnetic field and the velocity vector
pitch 403 Ratio, parallel velocity over total velocity
pitch_at_min_b 404 Pitch, ratio between the parallel over the perpendicular velocity, at the minimum value of the magnetic field strength along the guiding centre orbit
n_tor 500 Toroidal mode number, the wave vector toroidal component being defined as k_tor = n_tor grad phi where phi is the toroidal angle so that a positive n_tor means a wave propagating in the positive phi direction
array of structures 1- 1...N
distribution/markers(itime)/coordinate_identifier(i1)/name Short string identifier {dynamic} STR_0D
distribution/markers(itime)/coordinate_identifier(i1)/index Integer identifier (enumeration index within a list). Private identifier values must be indicated by a negative index. {dynamic} INT_0D
distribution/markers(itime)/coordinate_identifier(i1)/description Verbose description {dynamic} STR_0D
distribution/markers(itime)/weights(:) Weight of the markers, i.e. number of real particles represented by each marker. The dimension of the vector correspond to the number of markers {dynamic} [-] FLT_1D 1- 1...N
distribution/markers(itime)/positions(:,:) Position of the markers in the set of coordinates. The first dimension corresponds to the number of markers, the second dimension to the set of coordinates {dynamic} [mixed] FLT_2D 1- distribution/markers(itime)/weights
2- distribution/markers(itime)/coordinate_identifier
distribution/markers(itime)/orbit_integrals Integrals along the markers orbit. These dimensionless expressions are of the form: (1/tau) integral (f(n_phi,m_pol,k,eq,...) dt) from time - tau to time, where tau is the transit/trapping time of the marker and f() a dimensionless function (phase factor,drift,etc) of the equilibrium (e.g. q) and perturbation (Fourier harmonics n_phi,m_pol and bounce harmonic k) along the particles orbits. In fact the integrals are taken during the last orbit of each marker at the time value of the time node below structure
distribution/markers(itime)/orbit_integrals/expressions(:) List of the expressions f(n_phi,m_pol,k,q,...) used in the orbit integrals {dynamic} STR_1D 1- 1...N
distribution/markers(itime)/orbit_integrals/n_phi(:) Array of toroidal mode numbers, n_phi, where quantities vary as exp(i.n_phi.phi) and phi runs anticlockwise when viewed from above {dynamic} INT_1D 1- 1...N
distribution/markers(itime)/orbit_integrals/n_tor(:)
Lifecycle status: obsolescent since version 3.42.1
Array of toroidal mode numbers, n_tor, where quantities vary as exp(i.n_tor.phi) and phi runs anticlockwise when viewed from above {dynamic} INT_1D 1- 1...N
distribution/markers(itime)/orbit_integrals/m_pol(:) Array of poloidal mode numbers, where quantities vary as exp(-i.m_pol.theta) and theta is the angle defined by the choice of ../../coordinate_identifier, with its centre at the magnetic axis recalled at the root of this IDS {dynamic} INT_1D 1- 1...N
distribution/markers(itime)/orbit_integrals/bounce_harmonics(:) Array of bounce harmonics k {dynamic} INT_1D 1- 1...N
distribution/markers(itime)/orbit_integrals/values(:,:,:,:,:) Values of the orbit integrals {dynamic} [-] CPX_5D 1- distribution/markers(itime)/orbit_integrals/expressions
2- distribution/markers(itime)/weights
3- distribution/markers(itime)/orbit_integrals/n_phi
4- distribution/markers(itime)/orbit_integrals/m_pol
5- distribution/markers(itime)/orbit_integrals/bounce_harmonics
distribution/markers(itime)/orbit_integrals_instant Integrals/quantities along the markers orbit. These dimensionless expressions are of the form: (1/tau) integral ( f(eq) dt) from time - tau to time_orbit for different values of time_orbit in the interval from time - tau to time, where tau is the transit/trapping time of the marker and f(eq) a dimensionless function (phase, drift,q,etc) of the equilibrium along the markers orbits. The integrals are taken during the last orbit of each marker at the time value of the time node below structure
distribution/markers(itime)/orbit_integrals_instant/expressions(:) List of the expressions f(eq) used in the orbit integrals {dynamic} STR_1D 1- 1...N
distribution/markers(itime)/orbit_integrals_instant/time_orbit(:) Time array along the markers last orbit {dynamic} [s] FLT_1D 1- 1...N
distribution/markers(itime)/orbit_integrals_instant/values(:,:,:) Values of the orbit integrals {dynamic} [-] CPX_3D 1- distribution/markers(itime)/orbit_integrals_instant/expressions
2- distribution/markers(itime)/weights
3- distribution/markers(itime)/orbit_integrals_instant/time_orbit
distribution/markers(itime)/toroidal_mode In case the orbit integrals are calculated for a given MHD perturbation, index of the toroidal mode considered. Refers to the time_slice/toroidal_mode array of the MHD_LINEAR IDS in which this perturbation is described {dynamic} INT_0D
distribution/markers(itime)/time Time {dynamic} [s] FLT_0D
vacuum_toroidal_field Characteristics of the vacuum toroidal field (used in rho_tor definition and in the normalization of current densities) structure
vacuum_toroidal_field/r0 Reference major radius where the vacuum toroidal magnetic field is given (usually a fixed position such as the middle of the vessel at the equatorial midplane) {constant} [m] FLT_0D
vacuum_toroidal_field/b0(:) Vacuum toroidal field at R0 [T]; Positive sign means anti-clockwise when viewing from above. The product R0B0 must be consistent with the b_tor_vacuum_r field of the tf IDS. {dynamic} [T]. This quantity is COCOS-dependent, with the following transformation :
Label Expression
b0_like .sigma_b0_eff
FLT_1D 1- time
code Generic decription of the code-specific parameters for the code that has produced this IDS structure
code/name Name of software generating IDS {constant} STR_0D
code/description Short description of the software (type, purpose) {constant}. Introduced after DD version 3.38.1 STR_0D
code/commit Unique commit reference of software {constant} STR_0D
code/version Unique version (tag) of software {constant} STR_0D
code/repository URL of software repository {constant} STR_0D
code/parameters List of the code specific parameters in XML format {constant} STR_0D
code/output_flag(:) Output flag : 0 means the run is successful, other values mean some difficulty has been encountered, the exact meaning is then code specific. Negative values mean the result shall not be used. {dynamic} INT_1D 1- time
code/library(i1) List of external libraries used by the code that has produced this IDS array of structures [max_size=10 (limited in MDS+ backend only)] 1- 1...N
code/library(i1)/name Name of software {constant} STR_0D
code/library(i1)/description Short description of the software (type, purpose) {constant}. Introduced after DD version 3.38.1 STR_0D
code/library(i1)/commit Unique commit reference of software {constant} STR_0D
code/library(i1)/version Unique version (tag) of software {constant} STR_0D
code/library(i1)/repository URL of software repository {constant} STR_0D
code/library(i1)/parameters List of the code specific parameters in XML format {constant} STR_0D
time(:) Generic time {dynamic} [s] FLT_1D 1- 1...N

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