ITER Physics Data Model Documentation for charge_exchange

Charge exchange spectroscopy diagnostic

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: 3.42.0

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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/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
aperture Description of the collimating aperture of the diagnostic, relevant to all lines-of-sight (channels) structure
aperture/geometry_type Type of geometry used to describe the surface of the detector or aperture (1:'outline', 2:'circular', 3:'rectangle'). In case of 'outline', the surface is described by an outline of point in a local coordinate system defined by a centre and three unit vectors X1, X2, X3. Note that there is some flexibility here and the data provider should choose the most convenient coordinate system for the object, respecting the definitions of (X1,X2,X3) indicated below. In case of 'circular', the surface is a circle defined by its centre, radius, and normal vector oriented towards the plasma X3. In case of 'rectangle', the surface is a rectangle defined by its centre, widths in the X1 and X2 directions, and normal vector oriented towards the plasma X3. {static} INT_0D
aperture/centre If geometry_type=2, coordinates of the centre of the circle. If geometry_type=1 or 3, coordinates of the origin of the local coordinate system (X1,X2,X3) describing the plane detector/aperture. This origin is located within the detector/aperture area. structure
aperture/centre/r Major radius {static} [m] FLT_0D
aperture/centre/phi Toroidal angle (oriented counter-clockwise when viewing from above) {static} [rad] FLT_0D
aperture/centre/z Height {static} [m] FLT_0D
aperture/radius Radius of the circle, used only if geometry_type = 2 {static} [m] FLT_0D
aperture/x1_unit_vector Components of the X1 direction unit vector in the (X,Y,Z) coordinate system, where X is the major radius axis for phi = 0, Y is the major radius axis for phi = pi/2, and Z is the height axis. The X1 vector is more horizontal than X2 (has a smaller abs(Z) component) and oriented in the positive phi direction (counter-clockwise when viewing from above). Click here for further documentation. structure
aperture/x1_unit_vector/x Component along X axis {static} [m] FLT_0D
aperture/x1_unit_vector/y Component along Y axis {static} [m] FLT_0D
aperture/x1_unit_vector/z Component along Z axis {static} [m] FLT_0D
aperture/x2_unit_vector Components of the X2 direction unit vector in the (X,Y,Z) coordinate system, where X is the major radius axis for phi = 0, Y is the major radius axis for phi = pi/2, and Z is the height axis. The X2 axis is orthonormal so that uX2 = uX3 x uX1. Click here for further documentation. structure
aperture/x2_unit_vector/x Component along X axis {static} [m] FLT_0D
aperture/x2_unit_vector/y Component along Y axis {static} [m] FLT_0D
aperture/x2_unit_vector/z Component along Z axis {static} [m] FLT_0D
aperture/x3_unit_vector Components of the X3 direction unit vector in the (X,Y,Z) coordinate system, where X is the major radius axis for phi = 0, Y is the major radius axis for phi = pi/2, and Z is the height axis. The X3 axis is normal to the detector/aperture plane and oriented towards the plasma. Click here for further documentation. structure
aperture/x3_unit_vector/x Component along X axis {static} [m] FLT_0D
aperture/x3_unit_vector/y Component along Y axis {static} [m] FLT_0D
aperture/x3_unit_vector/z Component along Z axis {static} [m] FLT_0D
aperture/x1_width Full width of the aperture in the X1 direction, used only if geometry_type = 3 {static} [m] FLT_0D
aperture/x2_width Full width of the aperture in the X2 direction, used only if geometry_type = 3 {static} [m] FLT_0D
aperture/outline Irregular outline of the detector/aperture in the (X1, X2) coordinate system. Do NOT repeat the first point. structure
aperture/outline/x1(:) Positions along x1 axis {static} [m] FLT_1D 1- 1...N
aperture/outline/x2(:) Positions along x2 axis {static} [m] FLT_1D 1- aperture/outline/x1
aperture/surface Surface of the detector/aperture, derived from the above geometric data {static} [m^2] FLT_0D
etendue Etendue (geometric extent) of the optical system {static} [m^2.str] FLT_0D
etendue_method Method used to calculate the etendue. Index = 0 : exact calculation with a 4D integral; 1 : approximation with first order formula (detector surface times solid angle subtended by the apertures); 2 : other methods structure
etendue_method/name Short string identifier {static} STR_0D
etendue_method/index Integer identifier (enumeration index within a list). Private identifier values must be indicated by a negative index. {static} INT_0D
etendue_method/description Verbose description {static} STR_0D
channel(i1) Set of channels (lines-of-sight). The line-of-sight is defined by the centre of the collimating aperture and the position of the measurements. array of structures [max_size=100 (limited in MDS+ backend only)] 1- 1...N
channel(i1)/name Name of the channel {static} STR_0D
channel(i1)/identifier ID of the channel {static} STR_0D
channel(i1)/position Position of the measurements structure
channel(i1)/position/r Major radius [m] structure
channel(i1)/position/r/data(:) Data {dynamic} [as_parent] FLT_1D 1- channel(i1)/position/r/time
channel(i1)/position/r/time(:) Time {dynamic} [s] FLT_1D 1- 1...N
channel(i1)/position/phi Toroidal angle (oriented counter-clockwise when viewing from above) [rad] structure
channel(i1)/position/phi/data(:) Data {dynamic} [as_parent] FLT_1D 1- channel(i1)/position/phi/time
channel(i1)/position/phi/time(:) Time {dynamic} [s] FLT_1D 1- 1...N
channel(i1)/position/z Height [m] structure
channel(i1)/position/z/data(:) Data {dynamic} [as_parent] FLT_1D 1- channel(i1)/position/z/time
channel(i1)/position/z/time(:) Time {dynamic} [s] FLT_1D 1- 1...N
channel(i1)/t_i_average Ion temperature (averaged on charge states and ion species) at the channel measurement point [eV] structure
channel(i1)/t_i_average/data(:) Data {dynamic} [as_parent] FLT_1D 1- channel(i1)/t_i_average/time
channel(i1)/t_i_average/time(:) Time {dynamic} [s] FLT_1D 1- 1...N
channel(i1)/t_i_average_method Description of the method used to reconstruct the average ion temperature structure
channel(i1)/t_i_average_method/name Short string identifier {constant} STR_0D
channel(i1)/t_i_average_method/index Integer identifier (enumeration index within a list). Private identifier values must be indicated by a negative index. {constant} INT_0D
channel(i1)/t_i_average_method/description Verbose description {constant} STR_0D
channel(i1)/zeff Local ionic effective charge at the channel measurement point [-] structure
channel(i1)/zeff/data(:) Data {dynamic} [as_parent] FLT_1D 1- channel(i1)/zeff/time
channel(i1)/zeff/time(:) Time {dynamic} [s] FLT_1D 1- 1...N
channel(i1)/zeff_method Description of the method used to reconstruct the local effective charge structure
channel(i1)/zeff_method/name Short string identifier {constant} STR_0D
channel(i1)/zeff_method/index Integer identifier (enumeration index within a list). Private identifier values must be indicated by a negative index. {constant} INT_0D
channel(i1)/zeff_method/description Verbose description {constant} STR_0D
channel(i1)/zeff_line_average Ionic effective charge, line average along the channel line-of-sight [-] structure
channel(i1)/zeff_line_average/data(:) Data {dynamic} [as_parent] FLT_1D 1- channel(i1)/zeff_line_average/time
channel(i1)/zeff_line_average/time(:) Time {dynamic} [s] FLT_1D 1- 1...N
channel(i1)/zeff_line_average_method Description of the method used to reconstruct the line average effective charge structure
channel(i1)/zeff_line_average_method/name Short string identifier {constant} STR_0D
channel(i1)/zeff_line_average_method/index Integer identifier (enumeration index within a list). Private identifier values must be indicated by a negative index. {constant} INT_0D
channel(i1)/zeff_line_average_method/description Verbose description {constant} STR_0D
channel(i1)/momentum_tor
Lifecycle status: obsolescent since version 3.42.0
Total plasma toroidal momentum, summed over ion species and electrons weighted by their density and major radius, i.e. sum_over_species(n*R*m*Vphi), at the channel measurement point [kg.m^-1.s^-1] structure
channel(i1)/momentum_tor/data(:) Data {dynamic} [as_parent] FLT_1D 1- channel(i1)/momentum_tor/time
channel(i1)/momentum_tor/time(:) Time {dynamic} [s] FLT_1D 1- 1...N
channel(i1)/momentum_tor_method
Lifecycle status: obsolescent since version 3.42.0
Description of the method used to reconstruct the total plasma toroidal momentum structure
channel(i1)/momentum_tor_method/name Short string identifier {constant} STR_0D
channel(i1)/momentum_tor_method/index Integer identifier (enumeration index within a list). Private identifier values must be indicated by a negative index. {constant} INT_0D
channel(i1)/momentum_tor_method/description Verbose description {constant} STR_0D
channel(i1)/momentum_phi Total plasma toroidal momentum, summed over ion species and electrons weighted by their density and major radius, i.e. sum_over_species(n*R*m*Vphi), at the channel measurement point [kg.m^-1.s^-1] structure
channel(i1)/momentum_phi/data(:) Data {dynamic} [as_parent] FLT_1D 1- channel(i1)/momentum_phi/time
channel(i1)/momentum_phi/time(:) Time {dynamic} [s] FLT_1D 1- 1...N
channel(i1)/momentum_phi_method Description of the method used to reconstruct the total plasma toroidal momentum structure
channel(i1)/momentum_phi_method/name Short string identifier {constant} STR_0D
channel(i1)/momentum_phi_method/index Integer identifier (enumeration index within a list). Private identifier values must be indicated by a negative index. {constant} INT_0D
channel(i1)/momentum_phi_method/description Verbose description {constant} STR_0D
channel(i1)/ion(i2) Physical quantities related to ion species and charge stage (H+, D+, T+, He+2, Li+3, Be+4, C+6, N+7, O+8, Ne+10, Si+14, Ar+16 or Ar+18) derived from the measured charge exchange emission of each species, at the position of the measurement array of structures [max_size=13 (limited in MDS+ backend only)] 1- 1...N
channel(i1)/ion(i2)/a Mass of atom of the ion {constant} [Atomic Mass Unit] FLT_0D
channel(i1)/ion(i2)/z_ion Ion charge {constant} [Elementary Charge Unit] FLT_0D
channel(i1)/ion(i2)/z_n Nuclear charge {constant} [Elementary Charge Unit] FLT_0D
channel(i1)/ion(i2)/label
Lifecycle status: obsolescent since version 3.42.0
String identifying the ion (e.g. H+, D+, T+, He+2, C+6, ...) {constant} STR_0D
channel(i1)/ion(i2)/name String identifying the ion (e.g. H+, D+, T+, He+2, C+6, ...) {constant} STR_0D
channel(i1)/ion(i2)/t_i Ion temperature at the channel measurement point [eV] structure
channel(i1)/ion(i2)/t_i/data(:) Data {dynamic} [as_parent] FLT_1D 1- channel(i1)/ion(i2)/t_i/time
channel(i1)/ion(i2)/t_i/time(:) Time {dynamic} [s] FLT_1D 1- 1...N
channel(i1)/ion(i2)/t_i_method Description of the method used to derive the ion temperature structure
channel(i1)/ion(i2)/t_i_method/name Short string identifier {constant} STR_0D
channel(i1)/ion(i2)/t_i_method/index Integer identifier (enumeration index within a list). Private identifier values must be indicated by a negative index. {constant} INT_0D
channel(i1)/ion(i2)/t_i_method/description Verbose description {constant} STR_0D
channel(i1)/ion(i2)/velocity_tor
Lifecycle status: obsolescent since version 3.42.0
Toroidal velocity of the ion (oriented counter-clockwise when seen from above) at the channel measurement point [m.s^-1] structure
channel(i1)/ion(i2)/velocity_tor/data(:) Data {dynamic} [as_parent] FLT_1D 1- channel(i1)/ion(i2)/velocity_tor/time
channel(i1)/ion(i2)/velocity_tor/time(:) Time {dynamic} [s] FLT_1D 1- 1...N
channel(i1)/ion(i2)/velocity_tor_method
Lifecycle status: obsolescent since version 3.42.0
Description of the method used to reconstruct the ion toroidal velocity structure
channel(i1)/ion(i2)/velocity_tor_method/name Short string identifier {constant} STR_0D
channel(i1)/ion(i2)/velocity_tor_method/index Integer identifier (enumeration index within a list). Private identifier values must be indicated by a negative index. {constant} INT_0D
channel(i1)/ion(i2)/velocity_tor_method/description Verbose description {constant} STR_0D
channel(i1)/ion(i2)/velocity_phi Toroidal velocity of the ion (oriented counter-clockwise when seen from above) at the channel measurement point [m.s^-1] structure
channel(i1)/ion(i2)/velocity_phi/data(:) Data {dynamic} [as_parent] FLT_1D 1- channel(i1)/ion(i2)/velocity_phi/time
channel(i1)/ion(i2)/velocity_phi/time(:) Time {dynamic} [s] FLT_1D 1- 1...N
channel(i1)/ion(i2)/velocity_phi_method Description of the method used to reconstruct the ion toroidal velocity [m.s^-1] structure
channel(i1)/ion(i2)/velocity_phi_method/name Short string identifier {constant} STR_0D
channel(i1)/ion(i2)/velocity_phi_method/index Integer identifier (enumeration index within a list). Private identifier values must be indicated by a negative index. {constant} INT_0D
channel(i1)/ion(i2)/velocity_phi_method/description Verbose description {constant} STR_0D
channel(i1)/ion(i2)/velocity_pol Poloidal velocity of the ion (oriented clockwise when seen from front on the right side of the tokamak axi-symmetry axis) at the channel measurement point [m.s^-1] structure
channel(i1)/ion(i2)/velocity_pol/data(:) Data {dynamic} [as_parent] FLT_1D 1- channel(i1)/ion(i2)/velocity_pol/time
channel(i1)/ion(i2)/velocity_pol/time(:) Time {dynamic} [s] FLT_1D 1- 1...N
channel(i1)/ion(i2)/velocity_pol_method Description of the method used to reconstruct the ion poloidal velocity structure
channel(i1)/ion(i2)/velocity_pol_method/name Short string identifier {constant} STR_0D
channel(i1)/ion(i2)/velocity_pol_method/index Integer identifier (enumeration index within a list). Private identifier values must be indicated by a negative index. {constant} INT_0D
channel(i1)/ion(i2)/velocity_pol_method/description Verbose description {constant} STR_0D
channel(i1)/ion(i2)/n_i_over_n_e Ion concentration (ratio of the ion density over the electron density) at the channel measurement point [-] structure
channel(i1)/ion(i2)/n_i_over_n_e/data(:) Data {dynamic} [as_parent] FLT_1D 1- channel(i1)/ion(i2)/n_i_over_n_e/time
channel(i1)/ion(i2)/n_i_over_n_e/time(:) Time {dynamic} [s] FLT_1D 1- 1...N
channel(i1)/ion(i2)/n_i_over_n_e_method Description of the method used to derive the ion concentration structure
channel(i1)/ion(i2)/n_i_over_n_e_method/name Short string identifier {constant} STR_0D
channel(i1)/ion(i2)/n_i_over_n_e_method/index Integer identifier (enumeration index within a list). Private identifier values must be indicated by a negative index. {constant} INT_0D
channel(i1)/ion(i2)/n_i_over_n_e_method/description Verbose description {constant} STR_0D
channel(i1)/bes Derived Beam Emission Spectroscopy (BES) parameters structure
channel(i1)/bes/a Mass of atom of the diagnostic neutral beam particle {constant} [Atomic Mass Unit] FLT_0D
channel(i1)/bes/z_ion Ion charge of the diagnostic neutral beam particle {constant} [Elementary Charge Unit] FLT_0D
channel(i1)/bes/z_n Nuclear charge of the diagnostic neutral beam particle {constant} [Elementary Charge Unit] FLT_0D
channel(i1)/bes/label
Lifecycle status: obsolescent since version 3.42.0
String identifying the diagnostic neutral beam particle {constant} STR_0D
channel(i1)/bes/name String identifying the diagnostic neutral beam particle {constant} STR_0D
channel(i1)/bes/transition_wavelength Unshifted wavelength of the BES transition {constant} [m] FLT_0D
channel(i1)/bes/doppler_shift Doppler shift due to the diagnostic neutral beam particle velocity [m] structure
channel(i1)/bes/doppler_shift/data(:) Data {dynamic} [as_parent] FLT_1D 1- channel(i1)/bes/doppler_shift/time
channel(i1)/bes/doppler_shift/time(:) Time {dynamic} [s] FLT_1D 1- 1...N
channel(i1)/bes/lorentz_shift Lorentz shift due to the Lorentz electric field (vxB) in the frame of the diagnostic neutral beam particles moving with a velocity v across the magnetic field B [m] structure
channel(i1)/bes/lorentz_shift/data(:) Data {dynamic} [as_parent] FLT_1D 1- channel(i1)/bes/lorentz_shift/time
channel(i1)/bes/lorentz_shift/time(:) Time {dynamic} [s] FLT_1D 1- 1...N
channel(i1)/bes/radiances Calibrated intensities of the 9 splitted lines (Stark effect due to Lorentz electric field). Note: radiances are integrated over the sightline crossing the neutral beam [(photons) m^-2.s^-1.sr^-1] structure 1- 1...9
2- channel(i1)/bes/radiances/time
channel(i1)/bes/radiances/data(:,:) Data {dynamic} [as_parent] FLT_2D 1- 1...9
2- channel(i1)/bes/radiances/time
channel(i1)/bes/radiances/time(:) Time {dynamic} [s] FLT_1D 1- 1...N
channel(i1)/ion_fast(i2) Derived Fast Ion Charge eXchange (FICX) parameters array of structures [max_size=5 (limited in MDS+ backend only)] 1- 1...N
channel(i1)/ion_fast(i2)/a Mass of atom of the fast ion {constant} [Atomic Mass Unit] FLT_0D
channel(i1)/ion_fast(i2)/z_ion Fast ion charge {constant} [Elementary Charge Unit] FLT_0D
channel(i1)/ion_fast(i2)/z_n Nuclear charge of the fast ion {constant} [Elementary Charge Unit] FLT_0D
channel(i1)/ion_fast(i2)/label
Lifecycle status: obsolescent since version 3.42.0
String identifying the fast ion (e.g. H+, D+, T+, He+2, C+6, ...) {constant} STR_0D
channel(i1)/ion_fast(i2)/name String identifying the fast ion (e.g. H+, D+, T+, He+2, C+6, ...) {constant} STR_0D
channel(i1)/ion_fast(i2)/transition_wavelength Unshifted wavelength of the fast ion charge exchange transition {constant} [m] FLT_0D
channel(i1)/ion_fast(i2)/radiance Calibrated radiance of the fast ion charge exchange spectrum assuming the shape is pre-defined (e.g. by the Fokker-Planck slowing-down function). Note: radiance is integrated over the sightline crossing the neutral beam [(photons) m^-2.s^-1.sr^-1] structure
channel(i1)/ion_fast(i2)/radiance/data(:) Data {dynamic} [as_parent] FLT_1D 1- channel(i1)/ion_fast(i2)/radiance/time
channel(i1)/ion_fast(i2)/radiance/time(:) Time {dynamic} [s] FLT_1D 1- 1...N
channel(i1)/ion_fast(i2)/radiance_spectral_method Description of the method used to reconstruct the fast ion charge exchange spectrum (e.g. what pre-defined slowing-down and source functions used) structure
channel(i1)/ion_fast(i2)/radiance_spectral_method/name Short string identifier {constant} STR_0D
channel(i1)/ion_fast(i2)/radiance_spectral_method/index Integer identifier (enumeration index within a list). Private identifier values must be indicated by a negative index. {constant} INT_0D
channel(i1)/ion_fast(i2)/radiance_spectral_method/description Verbose description {constant} STR_0D
channel(i1)/spectrum(i2) Set of spectra obtained by various gratings array of structures [max_size=3 (limited in MDS+ backend only)] 1- 1...N
channel(i1)/spectrum(i2)/grating Number of grating lines per unit length {static} [m^-1] FLT_0D
channel(i1)/spectrum(i2)/slit_width Width of the slit (placed in the object focal plane) {static} [m] FLT_0D
channel(i1)/spectrum(i2)/instrument_function(:,:) Array of Gaussian widths and amplitudes which as a sum make up the instrument fuction. IF(lambda) = sum( instrument_function(1,i)/sqrt(2 * pi * instrument_function(2,i)^2 ) * exp( -lambda^2/(2 * instrument_function(2,i)^2) ) ),whereby sum( instrument_function(1,i) ) = 1 {static} [m] FLT_2D 1- 1...2
2- 1...N
channel(i1)/spectrum(i2)/exposure_time Exposure time {constant} [s] FLT_0D
channel(i1)/spectrum(i2)/wavelengths(:) Measured wavelengths {constant} [m] FLT_1D 1- 1...N
channel(i1)/spectrum(i2)/intensity_spectrum Intensity spectrum (not calibrated), i.e. number of photoelectrons detected by unit time by a wavelength pixel of the channel, taking into account electronic gain compensation and channels relative calibration [(photoelectrons).s^-1] structure 1- channel(i1)/spectrum(i2)/wavelengths
2- channel(i1)/spectrum(i2)/intensity_spectrum/time
channel(i1)/spectrum(i2)/intensity_spectrum/data(:,:) Data {dynamic} [as_parent] FLT_2D 1- channel(i1)/spectrum(i2)/wavelengths
2- channel(i1)/spectrum(i2)/intensity_spectrum/time
channel(i1)/spectrum(i2)/intensity_spectrum/time(:) Time {dynamic} [s] FLT_1D 1- 1...N
channel(i1)/spectrum(i2)/radiance_spectral Calibrated spectral radiance (radiance per unit wavelength) [(photons) m^-2.s^-1.sr^-1.m^-1] structure 1- channel(i1)/spectrum(i2)/wavelengths
2- channel(i1)/spectrum(i2)/radiance_spectral/time
channel(i1)/spectrum(i2)/radiance_spectral/data(:,:) Data {dynamic} [as_parent] FLT_2D 1- channel(i1)/spectrum(i2)/wavelengths
2- channel(i1)/spectrum(i2)/radiance_spectral/time
channel(i1)/spectrum(i2)/radiance_spectral/time(:) Time {dynamic} [s] FLT_1D 1- 1...N
channel(i1)/spectrum(i2)/processed_line(i3) Set of processed spectral lines array of structures [max_size=5 (limited in MDS+ backend only)] 1- 1...N
channel(i1)/spectrum(i2)/processed_line(i3)/label
Lifecycle status: obsolescent since version 3.42.0
String identifying the processed spectral line: Spectroscopy notation emitting element (e.g. D I, Be IV, W I, C VI), transition - if known - between round brackets (e.g. (3-2) ) and indication type of charge exchange - if applicable - between square brackets (e.g. [ACX] or [PCX]). Example for beryllium active charge exchange line at 468.5 nm: 'Be IV (8-6) [ACX]'. Example for impact excitation tungsten line coming from the plasma edge: 'W I' {constant} STR_0D
channel(i1)/spectrum(i2)/processed_line(i3)/name String identifying the processed spectral line: Spectroscopy notation emitting element (e.g. D I, Be IV, W I, C VI), transition - if known - between round brackets (e.g. (3-2) ) and indication type of charge exchange - if applicable - between square brackets (e.g. [ACX] or [PCX]). Example for beryllium active charge exchange line at 468.5 nm: 'Be IV (8-6) [ACX]'. Example for impact excitation tungsten line coming from the plasma edge: 'W I' {constant} STR_0D
channel(i1)/spectrum(i2)/processed_line(i3)/wavelength_central Unshifted central wavelength of the processed spectral line {constant} [m] FLT_0D
channel(i1)/spectrum(i2)/processed_line(i3)/radiance Calibrated, background subtracted radiance (integrated over the spectrum for this line) [m^-2.s^-1.sr^-1] structure
channel(i1)/spectrum(i2)/processed_line(i3)/radiance/data(:) Data {dynamic} [as_parent] FLT_1D 1- channel(i1)/spectrum(i2)/processed_line(i3)/radiance/time
channel(i1)/spectrum(i2)/processed_line(i3)/radiance/time(:) Time {dynamic} [s] FLT_1D 1- 1...N
channel(i1)/spectrum(i2)/processed_line(i3)/intensity Non-calibrated intensity (integrated over the spectrum for this line), i.e. number of photoelectrons detected by unit time, taking into account electronic gain compensation and channels relative calibration [(photonelectrons).s^-1] structure
channel(i1)/spectrum(i2)/processed_line(i3)/intensity/data(:) Data {dynamic} [as_parent] FLT_1D 1- channel(i1)/spectrum(i2)/processed_line(i3)/intensity/time
channel(i1)/spectrum(i2)/processed_line(i3)/intensity/time(:) Time {dynamic} [s] FLT_1D 1- 1...N
channel(i1)/spectrum(i2)/processed_line(i3)/width Full width at Half Maximum (FWHM) of the emission line [m] structure
channel(i1)/spectrum(i2)/processed_line(i3)/width/data(:) Data {dynamic} [as_parent] FLT_1D 1- channel(i1)/spectrum(i2)/processed_line(i3)/width/time
channel(i1)/spectrum(i2)/processed_line(i3)/width/time(:) Time {dynamic} [s] FLT_1D 1- 1...N
channel(i1)/spectrum(i2)/processed_line(i3)/shift Shift of the emission line wavelength with respected to the unshifted cental wavelength (e.g. Doppler shift) [m] structure
channel(i1)/spectrum(i2)/processed_line(i3)/shift/data(:) Data {dynamic} [as_parent] FLT_1D 1- channel(i1)/spectrum(i2)/processed_line(i3)/shift/time
channel(i1)/spectrum(i2)/processed_line(i3)/shift/time(:) Time {dynamic} [s] FLT_1D 1- 1...N
channel(i1)/spectrum(i2)/radiance_calibration(:) Radiance calibration {static} [m^-3.sr^-1] FLT_1D 1- channel(i1)/spectrum(i2)/wavelengths
channel(i1)/spectrum(i2)/radiance_calibration_date Date of the radiance calibration (yyyy_mm_dd) {static} STR_0D
channel(i1)/spectrum(i2)/wavelength_calibration_date Date of the wavelength calibration (yyyy_mm_dd) {static} STR_0D
channel(i1)/spectrum(i2)/radiance_continuum Calibrated continuum intensity in the middle of the spectrum per unit wavelength [m^-2.s^-1.sr^-1.m^-1] structure 1- channel(i1)/spectrum(i2)/wavelengths
2- channel(i1)/spectrum(i2)/radiance_continuum/time
channel(i1)/spectrum(i2)/radiance_continuum/data(:,:) Data {dynamic} [as_parent] FLT_2D 1- channel(i1)/spectrum(i2)/wavelengths
2- channel(i1)/spectrum(i2)/radiance_continuum/time
channel(i1)/spectrum(i2)/radiance_continuum/time(:) Time {dynamic} [s] FLT_1D 1- 1...N
latency Upper bound of the delay between physical information received by the detector and data available on the real-time (RT) network. {static} [s]. Introduced after DD version 3.32.1 FLT_0D
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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