reflectometer_fluctuation¶
Fluctuation reflectometer diagnostic. Multiple reflectometers are considered as independent diagnostics to be handled with different occurrence numbers
Maximum occurrences (MDS+ backend only): 3
New in version 3.39.0: lifecycle status alpha
Changed in version 3.39.0.
ids_propertiesstructure¶
See common IDS structure reference: ids_properties.
typeSTR_0D¶Type of reflectometer (frequency_swept, radar, …)
Type of reflectometer (frequency_swept, radar, …)
channel(i1)AoS¶Set of channels, e.g. […]
Set of channels, e.g. different reception antennas or frequency bandwidths of the reflectometer
Maximum occurrences (MDS+ backend only): 5
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channel(i1)/nameSTR_0D¶Short string identifier (unique for a given device)
Short string identifier (unique for a given device)
channel(i1)/descriptionSTR_0D¶Description, e.g. […]
Description, e.g. “channel viewing the upper divertor”
New in version >3.
channel(i1)/antennas_orientation(itime)AoS¶Description of lines of sight and antenna orientation as a function […]
Description of lines of sight and antenna orientation as a function of time
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channel(i1)/antennas_orientation(itime)/line_of_sight_emissionstructure¶Description of the line of sight of the emission antenna. […]
Description of the line of sight of the emission antenna. The first point corresponds to the centre of the antenna mouth. The second point correspond to the interception of the line of sight with the reflection surface on the inner wall.
channel(i1)/antennas_orientation(itime)/line_of_sight_emission/first_pointstructure¶Position of the first point
Position of the first point
channel(i1)/antennas_orientation(itime)/line_of_sight_emission/first_point/r ⇹mFLT_0D¶Major radius
Major radius
channel(i1)/antennas_orientation(itime)/line_of_sight_emission/second_pointstructure¶Position of the second point
Position of the second point
channel(i1)/antennas_orientation(itime)/line_of_sight_emission/second_point/r ⇹mFLT_0D¶Major radius
Major radius
channel(i1)/antennas_orientation(itime)/line_of_sight_detectionstructure¶Description of the line of sight of the detection antenna, to […]
Description of the line of sight of the detection antenna, to be filled only if its position is distinct from the emission antenna. The first point corresponds to the centre of the antenna mouth. The second point correspond to the interception of the line of sight with the reflection surface on the inner wall.
channel(i1)/antennas_orientation(itime)/line_of_sight_detection/first_pointstructure¶Position of the first point
Position of the first point
channel(i1)/antennas_orientation(itime)/line_of_sight_detection/first_point/r ⇹mFLT_0D¶Major radius
Major radius
channel(i1)/antennas_orientation(itime)/line_of_sight_detection/second_pointstructure¶Position of the second point
Position of the second point
channel(i1)/antennas_orientation(itime)/line_of_sight_detection/second_point/r ⇹mFLT_0D¶Major radius
Major radius
channel(i1)/antennas_orientation(itime)/antenna_emissionstructure¶Dynamic emission antenna orientation
Dynamic emission antenna orientation
channel(i1)/antennas_orientation(itime)/antenna_emission/x1_unit_vectorstructure¶Components of the X1 direction unit vector in the (X,Y,Z) coordinate […]
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.
channel(i1)/antennas_orientation(itime)/antenna_emission/x1_unit_vector/x ⇹mFLT_0D¶Component along X axis
Component along X axis
channel(i1)/antennas_orientation(itime)/antenna_emission/x2_unit_vectorstructure¶Components of the X2 direction unit vector in the (X,Y,Z) coordinate […]
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.
channel(i1)/antennas_orientation(itime)/antenna_emission/x2_unit_vector/x ⇹mFLT_0D¶Component along X axis
Component along X axis
channel(i1)/antennas_orientation(itime)/antenna_emission/x3_unit_vectorstructure¶Components of the X3 direction unit vector in the (X,Y,Z) coordinate […]
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.
channel(i1)/antennas_orientation(itime)/antenna_emission/x3_unit_vector/x ⇹mFLT_0D¶Component along X axis
Component along X axis
channel(i1)/antennas_orientation(itime)/antenna_detectionstructure¶Dynamic detection antenna orientation, to be filled only if it […]
Dynamic detection antenna orientation, to be filled only if it is distinct from the emission antenna.
channel(i1)/antennas_orientation(itime)/antenna_detection/x1_unit_vectorstructure¶Components of the X1 direction unit vector in the (X,Y,Z) coordinate […]
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.
channel(i1)/antennas_orientation(itime)/antenna_detection/x1_unit_vector/x ⇹mFLT_0D¶Component along X axis
Component along X axis
channel(i1)/antennas_orientation(itime)/antenna_detection/x2_unit_vectorstructure¶Components of the X2 direction unit vector in the (X,Y,Z) coordinate […]
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.
channel(i1)/antennas_orientation(itime)/antenna_detection/x2_unit_vector/x ⇹mFLT_0D¶Component along X axis
Component along X axis
channel(i1)/antennas_orientation(itime)/antenna_detection/x3_unit_vectorstructure¶Components of the X3 direction unit vector in the (X,Y,Z) coordinate […]
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.
channel(i1)/antennas_orientation(itime)/antenna_detection/x3_unit_vector/x ⇹mFLT_0D¶Component along X axis
Component along X axis
channel(i1)/antenna_emission_staticstructure¶Static part of the geometry of the emission antenna
Static part of the geometry of the emission antenna
New in version >3.38.1.
channel(i1)/antenna_emission_static/geometry_typeINT_0D¶Type of geometry used to describe the surface of the detector […]
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.
channel(i1)/antenna_emission_static/centrestructure¶If geometry_type=2, coordinates of the centre of the circle. […]
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.
channel(i1)/antenna_emission_static/radius ⇹mFLT_0D¶Radius of the circle, used only if geometry_type = 2
Radius of the circle, used only if geometry_type = 2
channel(i1)/antenna_emission_static/x1_width ⇹mFLT_0D¶Full width of the aperture in the X1 direction, used only if […]
Full width of the aperture in the X1 direction, used only if geometry_type = 3
channel(i1)/antenna_emission_static/x2_width ⇹mFLT_0D¶Full width of the aperture in the X2 direction, used only if […]
Full width of the aperture in the X2 direction, used only if geometry_type = 3
channel(i1)/antenna_emission_static/outlinestructure¶Irregular outline of the detector/aperture in the (X1, X2) coordinate […]
Irregular outline of the detector/aperture in the (X1, X2) coordinate system. Repeat the first point since this is a closed contour
Changed in version 4: Since this describes a closed countour first point must now be repeated at the end of the coordinate arrays of the children
channel(i1)/antenna_emission_static/outline/x1(:) ⇹mFLT_1D¶Positions along x1 axis
Positions along x1 axis
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channel(i1)/antenna_detection_staticstructure¶Static part of the geometry of the detection antenna, to be filled […]
Static part of the geometry of the detection antenna, to be filled only if it is distinct from the emission antenna.
New in version >3.38.1.
channel(i1)/antenna_detection_static/geometry_typeINT_0D¶Type of geometry used to describe the surface of the detector […]
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.
channel(i1)/antenna_detection_static/centrestructure¶If geometry_type=2, coordinates of the centre of the circle. […]
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.
channel(i1)/antenna_detection_static/radius ⇹mFLT_0D¶Radius of the circle, used only if geometry_type = 2
Radius of the circle, used only if geometry_type = 2
channel(i1)/antenna_detection_static/x1_width ⇹mFLT_0D¶Full width of the aperture in the X1 direction, used only if […]
Full width of the aperture in the X1 direction, used only if geometry_type = 3
channel(i1)/antenna_detection_static/x2_width ⇹mFLT_0D¶Full width of the aperture in the X2 direction, used only if […]
Full width of the aperture in the X2 direction, used only if geometry_type = 3
channel(i1)/antenna_detection_static/outlinestructure¶Irregular outline of the detector/aperture in the (X1, X2) coordinate […]
Irregular outline of the detector/aperture in the (X1, X2) coordinate system. Repeat the first point since this is a closed contour
Changed in version 4: Since this describes a closed countour first point must now be repeated at the end of the coordinate arrays of the children
channel(i1)/antenna_detection_static/outline/x1(:) ⇹mFLT_1D¶Positions along x1 axis
Positions along x1 axis
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channel(i1)/frequenciesHzstructure¶Array of frequencies scanned during a sweep
Array of frequencies scanned during a sweep
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channel(i1)/raw_signalstructure¶Raw data from IQ detector
Raw data from IQ detector
channel(i1)/raw_signal/i_component(:,:) ⇹VFLT_2D¶I component of the IQ detector used to retrieve the phase of […]
I component of the IQ detector used to retrieve the phase of signal’s envelope
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channel(i1)/raw_signal/q_component(:,:) ⇹VFLT_2D¶Q component of the IQ detector used to retrieve the phase of […]
Q component of the IQ detector used to retrieve the phase of signal’s envelope
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channel(i1)/phaseradstructure¶Measured phase of the probing wave for each frequency and time […]
Measured phase of the probing wave for each frequency and time slice (corresponding to the begin time of a sweep), relative to the phase at launch
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channel(i1)/amplitudeVstructure¶Measured amplitude of the detected probing wave for each frequency […]
Measured amplitude of the detected probing wave for each frequency and time slice (corresponding to the begin time of a sweep)
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New in version >3.38.1.
channel(i1)/fluctuations_levelstructure¶Reconstruction of the amplitude of the fluctuations
Reconstruction of the amplitude of the fluctuations
channel(i1)/fluctuations_level/dn_e_over_n_e(:,:) ⇹1FLT_2D¶Relative amplitude of the density fluctuations post-processed […]
Relative amplitude of the density fluctuations post-processed for swept and fixed frequency (profile/one point)
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channel(i1)/fluctuations_level/positionstructure¶Array of positions at which the fluctuation level is computed
Array of positions at which the fluctuation level is computed
channel(i1)/fluctuations_level/position/r(:,:) ⇹mFLT_2D¶Major radius
Major radius
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channel(i1)/fluctuations_level/position/z(:,:) ⇹mFLT_2D¶Height
Height
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channel(i1)/fluctuations_level/position/phi(:,:) ⇹radFLT_2D¶Toroidal angle (oriented counter-clockwise when viewing from […]
Toroidal angle (oriented counter-clockwise when viewing from above)
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channel(i1)/fluctuations_level/position/psi(:,:) ⇹WFLT_2D¶Poloidal flux
Poloidal flux
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channel(i1)/fluctuations_level/position/rho_tor_norm(:,:) ⇹1FLT_2D¶Normalized toroidal flux coordinate
Normalized toroidal flux coordinate
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channel(i1)/fluctuations_level/position/rho_pol_norm(:,:) ⇹1FLT_2D¶Normalized poloidal flux coordinate = sqrt((psi(rho)-psi(magnetic_axis)) […]
Normalized poloidal flux coordinate = sqrt((psi(rho)-psi(magnetic_axis)) / (psi(LCFS)-psi(magnetic_axis)))
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channel(i1)/fluctuations_level/position/theta(:,:) ⇹radFLT_2D¶Poloidal angle (oriented clockwise when viewing the poloidal […]
Poloidal angle (oriented clockwise when viewing the poloidal cross section on the right hand side of the tokamak axis of symmetry, with the origin placed on the plasma magnetic axis)
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channel(i1)/fluctuations_level/time_width ⇹sFLT_0D¶Width of the time interval over which fluctuating profiles are […]
Width of the time interval over which fluctuating profiles are processed. By convention, the time interval starts at time-time_width and ends at time.
channel(i1)/fluctuations_spectrumstructure¶Spectrum of the fluctuations, obtained by Fourier transform
Spectrum of the fluctuations, obtained by Fourier transform
channel(i1)/fluctuations_spectrum/power_log(:,:,:) ⇹dBFLT_3D¶Power spectrum in log scale
Power spectrum in log scale
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channel(i1)/fluctuations_spectrum/frequencies_fourier(:) ⇹HzFLT_1D¶Array of frequencies used for the Fourier transform
Array of frequencies used for the Fourier transform
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channel(i1)/dopplerstructure¶Processed data for Doppler reflectometers
Processed data for Doppler reflectometers
channel(i1)/doppler/wavenumber(:) ⇹m^-1FLT_1D¶Wavenumber probed by the diagnostic
Wavenumber probed by the diagnostic
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channel(i1)/doppler/shift(:) ⇹HzFLT_1D¶Doppler frequency shift (for the main peak of the power spectrum)
Doppler frequency shift (for the main peak of the power spectrum)
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channel(i1)/doppler/positionstructure¶Measurement position
Measurement position
channel(i1)/doppler/position/phi(:) ⇹radFLT_1D¶Toroidal angle (oriented counter-clockwise when viewing from […]
Toroidal angle (oriented counter-clockwise when viewing from above)
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channel(i1)/doppler/position/rho_tor_norm(:) ⇹1FLT_1D¶Normalized toroidal flux coordinate
Normalized toroidal flux coordinate
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channel(i1)/doppler/position/rho_pol_norm(:) ⇹1FLT_1D¶Normalized poloidal flux coordinate = sqrt((psi(rho)-psi(magnetic_axis)) […]
Normalized poloidal flux coordinate = sqrt((psi(rho)-psi(magnetic_axis)) / (psi(LCFS)-psi(magnetic_axis)))
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channel(i1)/doppler/time_width ⇹sFLT_0D¶Width of the time interval over which fluctuating profiles are […]
Width of the time interval over which fluctuating profiles are processed. By convention, the time interval starts at time-time_width and ends at time.
psi_normalizationstructure¶Quantities to use to normalize psi, as a function of time
Quantities to use to normalize psi, as a function of time
psi_normalization/psi_magnetic_axis(:) ⇹WbFLT_1D¶Value of the poloidal magnetic flux at the magnetic axis
Value of the poloidal magnetic flux at the magnetic axis
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psi_normalization/psi_boundary(:) ⇹WbFLT_1D¶Value of the poloidal magnetic flux at the plasma boundary
Value of the poloidal magnetic flux at the plasma boundary
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