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SetupEQSANSReduction v1¶

Summary ¶

Set up EQSANS SANS reduction options.

Properties ¶

Name	Direction	Type	Default	Description
UseConfigTOFCuts	Input	boolean	False	If true, the edges of the TOF distribution will be cut according to the configuration file
LowTOFCut	Input	number	0	TOF value below which events will not be loaded into the workspace at load-time
HighTOFCut	Input	number	0	TOF value above which events will not be loaded into the workspace at load-time
WavelengthStep	Input	number	0.1	Wavelength steps to be used when rebinning the data before performing the reduction
UseConfigMask	Input	boolean	False	If true, the masking information found in the configuration file will be used
UseConfig	Input	boolean	True	If true, the best configuration file found will be used
CorrectForFlightPath	Input	boolean	False	If true, the TOF will be modified for the true flight path from the sample to the detector pixel
SkipTOFCorrection	Input	boolean	False	If true, the EQSANS TOF correction will be skipped
PreserveEvents	Input	boolean	False	If true, the output workspace will be an event workspace
SampleDetectorDistance	Input	number	Optional	Sample to detector distance to use (overrides meta data), in mm
SampleDetectorDistanceOffset	Input	number	Optional	Offset to the sample to detector distance (use only when using the detector distance found in the meta data), in mm
SampleOffset	Input	number	Optional	Offset applies to the sample position (use only when using the detector distance found in the meta data), in mm
DetectorOffset	Input	number	Optional	Offset applies to the detector position (use only when using the distance found in the meta data), in mm
SolidAngleCorrection	Input	boolean	True	If true, the solid angle correction will be applied to the data
DetectorTubes	Input	boolean	False	If true, the solid angle correction for tube detectors will be applied
LoadNexusInstrumentXML	Input	boolean	True	Reads the embedded Instrument XML from the NeXus file (optional, default True).
BeamCenterMethod	Input	string	None	Method for determining the data beam center. Allowed values: [‘None’, ‘Value’, ‘DirectBeam’, ‘Scattering’]
UseConfigBeam	Input	boolean	False	If True, the beam center will be taken from the config file
BeamCenterX	Input	number	Optional	Position of the beam center, in pixel
BeamCenterY	Input	number	Optional	Position of the beam center, in pixel
BeamCenterFile	Input	string		The name of the input event Nexus file to load. Allowed extensions: [‘_event.nxs’]
BeamRadius	Input	number	Optional	Radius of the beam area used the exclude the beam when calculating the center of mass of the scattering pattern [pixels]. Default=3.0
Normalisation	Input	string	BeamProfileAndCharge	Options for data normalisation. Allowed values: [‘None’, ‘Monitor’, ‘BeamProfileAndCharge’, ‘Charge’]
LoadMonitors	Input	boolean	False	If true, the monitor workspace will be loaded
MonitorReferenceFile	Input	string		The name of the beam monitor reference file used for normalisation. Allowed extensions: [‘_event.nxs’]
DarkCurrentFile	Input	string		The name of the input event Nexus file to load as dark current. Allowed extensions: [‘_event.nxs’]
SensitivityFile	Input	string		Flood field or sensitivity file. Allowed extensions: [‘_event.nxs’]
MinEfficiency	Input	number	Optional	Minimum efficiency for a pixel to be considered (default: no minimum).
MaxEfficiency	Input	number	Optional	Maximum efficiency for a pixel to be considered (default: no maximum).
UseDefaultDC	Input	boolean	True	If true, the dark current subtracted from the sample data will also be subtracted from the flood field.
SensitivityDarkCurrentFile	Input	string		The name of the input file to load as dark current. Allowed extensions: [‘_event.nxs’]
SensitivityBeamCenterMethod	Input	string	None	Method for determining the sensitivity data beam center. Allowed values: [‘None’, ‘Value’, ‘DirectBeam’, ‘Scattering’]
SensitivityBeamCenterX	Input	number	Optional	Sensitivity beam center location in X [pixels]
SensitivityBeamCenterY	Input	number	Optional	Sensitivity beam center location in Y [pixels]
SensitivityBeamCenterFile	Input	string		The name of the input data file to load. Allowed extensions: [‘.xml’]
SensitivityBeamCenterRadius	Input	number	Optional	Radius of the beam area used the exclude the beam when calculating the center of mass of the scattering pattern [pixels]. Default=3.0
OutputSensitivityWorkspace	Input	string		Name to give the sensitivity workspace
TransmissionMethod	Input	string	Value	Transmission determination method. Allowed values: [‘Value’, ‘DirectBeam’]
TransmissionValue	Input	number	Optional	Transmission value.
TransmissionError	Input	number	Optional	Transmission error.
TransmissionBeamRadius	Input	number	3	Radius of the beam area used to compute the transmission [pixels]
TransmissionSampleDataFile	Input	string		Sample data file for transmission calculation. Allowed extensions: [‘.xml’]
TransmissionEmptyDataFile	Input	string		Empty data file for transmission calculation. Allowed extensions: [‘.xml’]
FitFramesTogether	Input	boolean	False	If true, the two frames will be fit together
TransmissionBeamCenterMethod	Input	string	None	Method for determining the transmission data beam center. Allowed values: [‘None’, ‘Value’, ‘DirectBeam’, ‘Scattering’]
TransmissionBeamCenterX	Input	number	Optional	Transmission beam center location in X [pixels]
TransmissionBeamCenterY	Input	number	Optional	Transmission beam center location in Y [pixels]
TransmissionBeamCenterFile	Input	string		The name of the input data file to load. Allowed extensions: [‘.xml’]
TransmissionDarkCurrentFile	Input	string		The name of the input data file to load as transmission dark current. Allowed extensions: [‘.xml’]
TransmissionUseSampleDC	Input	boolean	True	If true, the sample dark current will be used IF a dark current file isnot set.
ThetaDependentTransmission	Input	boolean	True	If true, a theta-dependent transmission correction will be applied.
BackgroundFiles	Input	string		Background data files
BckTransmissionMethod	Input	string	Value	Transmission determination method. Allowed values: [‘Value’, ‘DirectBeam’]
BckTransmissionValue	Input	number	Optional	Transmission value.
BckTransmissionError	Input	number	Optional	Transmission error.
BckTransmissionBeamRadius	Input	number	3	Radius of the beam area used to compute the transmission [pixels]
BckTransmissionSampleDataFile	Input	string		Sample data file for transmission calculation. Allowed extensions: [‘.xml’]
BckTransmissionEmptyDataFile	Input	string		Empty data file for transmission calculation. Allowed extensions: [‘.xml’]
BckFitFramesTogether	Input	boolean	False	If true, the two frames will be fit together
BckTransmissionBeamCenterMethod	Input	string	None	Method for determining the transmission data beam center. Allowed values: [‘None’, ‘Value’, ‘DirectBeam’, ‘Scattering’]
BckTransmissionBeamCenterX	Input	number	Optional	Transmission beam center location in X [pixels]
BckTransmissionBeamCenterY	Input	number	Optional	Transmission beam center location in Y [pixels]
BckTransmissionBeamCenterFile	Input	string		The name of the input data file to load. Allowed extensions: [‘.xml’]
BckTransmissionDarkCurrentFile	Input	string		The name of the input data file to load as background transmission dark current. Allowed extensions: [‘.xml’]
BckThetaDependentTransmission	Input	boolean	True	If true, a theta-dependent transmission correction will be applied.
SampleThickness	Input	number	Optional	Sample thickness [cm]
MaskedDetectorList	Input	int list		List of detector IDs to be masked
MaskedEdges	Input	int list		Number of pixels to mask on the edges: X-low, X-high, Y-low, Y-high
MaskedSide	Input	string	None	Mask one side of the detector. Allowed values: [‘None’, ‘Front’, ‘Back’]
AbsoluteScaleMethod	Input	string	None	Absolute scale correction method. Allowed values: [‘None’, ‘Value’, ‘ReferenceData’]
AbsoluteScalingFactor	Input	number	1	Absolute scaling factor
AbsoluteScalingReferenceFilename	Input	string		Allowed extensions: [‘.xml’]
AbsoluteScalingBeamDiameter	Input	number	0	Beamstop diameter for computing the absolute scale factor [mm]. Read from file if not supplied.
AbsoluteScalingAttenuatorTrans	Input	number	1	Attenuator transmission value for computing the absolute scale factor
AbsoluteScalingApplySensitivity	Input	boolean	False	Apply sensitivity correction to the reference data when computing the absolute scale factor
DoAzimuthalAverage	Input	boolean	True
IQNumberOfBins	Input	number	100	Number of I(q) bins when binning is not specified
IQLogBinning	Input	boolean	False	I(q) log binning when binning is not specified
IQIndependentBinning	Input	boolean	True	If true and frame skipping is used, each frame will have its own binning
IQScaleResults	Input	boolean	True	If true and frame skipping is used, frame 1 will be scaled to frame 2
ComputeResolution	Input	boolean	False	If true the Q resolution will be computed
SampleApertureDiameter	Input	number	10	Sample aperture diameter [mm]
Do2DReduction	Input	boolean	True
IQ2DNumberOfBins	Input	number	100	Number of I(qx,qy) bins.
ProcessInfo	Input	string		Additional process information
OutputDirectory	Input	string		Directory to put the output files in
OutputMessage	Output	string
ReductionProperties	Input	string	__sans_reduction_properties

Description ¶

Create a PropertyManager object setting the reduction options for EQSANS. The property manager object is then added to the PropertyManagerDataService.

See SANSReduction for details.

Categories: AlgorithmIndex | Workflow\SANS