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SANSILLParameterScan v1

Summary

Integrate SANS scan data along a parameter

Properties

Name	Direction	Type	Default	Description
OutputWorkspace	Output	Workspace		The output workspace containing the 2D reduced data.
OutputJoinedWorkspace	Output	Workspace		The output workspace containing all the reduced data, before grouping.
SampleRun	Input	string	Mandatory	Sample scan file. Allowed values: [‘nxs’]
AbsorberRun	Input	string		Absorber run. Allowed values: [‘nxs’]
ContainerRun	Input	string		Empty container run. Allowed values: [‘nxs’]
SensitivityMap	Input	string		File containing the map of relative detector efficiencies. Allowed values: [‘nxs’]
DefaultMaskFile	Input	string		File containing the default mask to be applied to all the detector configurations. Allowed values: [‘nxs’]
NormaliseBy	Input	string	Time	Choose the normalisation type. Allowed values: [‘None’, ‘Time’, ‘Monitor’]
Observable	Input	string	Omega.value	Parameter from the sample logs along which the scan is made
PixelYMin	Input	number	3	Minimal y-index taken in the integration. Default is based on D16B geometry.
PixelYMax	Input	number	189	Maximal y-index taken in the integration. Default is based on D16B geometry.
MinThreshold	Input	number	0	Minimum threshold for calculated efficiency.
MaxThreshold	Input	number	2	Maximum threshold for calculated efficiency.

Description

This algorithm allows the integration of data along a parameter. It has been designed for D16 along the Omega axis, but it can normally be applied to other instruments and techniques.

Given a file containing a scan, this algorithm performs usual reduction for SANS detectors, and then produces a 2D ouput, with the x-axis being the x-axis of the detector, and the y-axis the parameter used for the scan. The data is thus the sum of each column of pixels of the detector, stacked one above the others and sorted by the integration parameter. The OutputJoinedWorkspace contains, if asked for, the reduced data on one workspace, along the axis defined by the parameter.

Example - full treatment of a sample

# reduce part of an omega scan on D16.
SANSILLParameterScan(SampleRun="025786.nxs",
                     OutputWorkspace="output2d",
                     OutputJoinedWorkspace="reduced",
                     Observable="Omega.value",
                     PixelYmin=3,
                     PixelYMax=189)

Categories: AlgorithmIndex | ILL\SANS | ILL\Auto

Source

Python: SANSILLParameterScan.py