ITER Physics Data Model Documentation for dataset_description

General description of the dataset (collection of all IDSs within the given database entry). Main description text to be put in ids_properties/comment

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 3.0.4

Last change occured on version: 3.30.0

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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/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/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} struct_array [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)/sources(:) List of sources used to import or calculate this node, identified as explained below. In case the node is the result of of a calculation / data processing, the source is an input to the process described in the "code" structure at the root of the IDS. The source 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 source, or the persistent identifier of the data source). 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 sources. Click here for further documentation. {constant} STR_1D 1- 1...N
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} struct_array [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) struct_array [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) struct_array [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. struct_array [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
data_entry Definition of this data entry structure
data_entry/user Username {constant} STR_0D
data_entry/machine Name of the experimental device to which this data is related {constant} STR_0D
data_entry/pulse_type Type of the data entry, e.g. "pulse", "simulation", ... {constant} STR_0D
data_entry/pulse Pulse number {constant} INT_0D
data_entry/run Run number {constant} INT_0D
parent_entry Definition of the parent data entry, if the present data entry has been generated by applying a given workflow to a unique parent entry structure
parent_entry/user Username {constant} STR_0D
parent_entry/machine Name of the experimental device to which this data is related {constant} STR_0D
parent_entry/pulse_type Type of the data entry, e.g. "pulse", "simulation", ... {constant} STR_0D
parent_entry/pulse Pulse number {constant} INT_0D
parent_entry/run Run number {constant} INT_0D
pulse_time_begin Date and time (UTC) at which the pulse started on the experiment, 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
pulse_time_begin_epoch Time at which the pulse started on the experiment, expressed in Unix Epoch time. Temporarily represented as two integers, since for the moment IMAS is missing 64bits long integers to represent epoch time with nanoseconds resolution structure
pulse_time_begin_epoch/seconds Elapsed seconds since the Unix Epoch time (01/01/1970 00:00:00 UTC) {constant} INT_0D
pulse_time_begin_epoch/nanoseconds Elapsed nanoseconds since the time in seconds indicated above {constant} INT_0D
pulse_time_end_epoch Time at which the pulse ended on the experiment, expressed in Unix Epoch time. Temporarily represented as two integers, since for the moment IMAS is missing 64bits long integers to represent epoch time with nanoseconds resolution structure
pulse_time_end_epoch/seconds Elapsed seconds since the Unix Epoch time (01/01/1970 00:00:00 UTC) {constant} INT_0D
pulse_time_end_epoch/nanoseconds Elapsed nanoseconds since the time in seconds indicated above {constant} INT_0D
imas_version Version of the IMAS infrastructure used to produce this data entry. Refers to the global IMAS repository which links to versions of every infrastructure tools {constant} STR_0D
dd_version Version of the physics data dictionary of this dataset {constant} STR_0D
simulation Description of the general simulation characteristics, if this data entry has been produced by a simulation. Several nodes describe typical time-dependent simulation with a time evolution as the main loop structure
simulation/comment_before Comment made when launching a simulation {constant} STR_0D
simulation/comment_after Comment made at the end of a simulation {constant} STR_0D
simulation/time_begin Start time {constant} [s] FLT_0D
simulation/time_step Time interval between main steps, e.g. storage step (if relevant and constant) {constant} [s] FLT_0D
simulation/time_end Stop time {constant} [s] FLT_0D
simulation/time_restart Time of the last restart done during the simulation {constant} [s] FLT_0D
simulation/time_current Current time of the simulation {constant} [s] FLT_0D
simulation/time_begun Actual wall-clock time simulation started {constant} [UTC] STR_0D
simulation/time_ended Actual wall-clock time simulation finished {constant} [UTC] STR_0D
simulation/workflow Description of the workflow which has been used to produce this data entry (e.g. copy of the Kepler MOML if using Kepler) {constant} STR_0D
time(:) Generic time {dynamic} [s] FLT_1D 1- 1...N

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