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EQSANSResolution dialog.
Table of Contents
| Name | Direction | Type | Default | Description |
|---|---|---|---|---|
| InputWorkspace | InOut | MatrixWorkspace | Mandatory | Name the workspace to calculate the resolution for |
| ReducedWorkspace | Input | MatrixWorkspace | Mandatory | I(Q) workspace |
| OutputBinning | Input | dbl list | Mandatory | |
| MinWavelength | Input | number | Optional | Minimum wavelength to use. |
| MaxWavelength | Input | number | Optional | Maximum wavelength to use. |
| PixelSizeX | Input | number | 5.15 | Pixel size in the X direction (mm). |
| PixelSizeY | Input | number | 5.15 | Pixel size in the Y direction (mm). |
| SampleApertureRadius | Input | number | 5 | Sample aperture radius (mm). |
| SourceApertureRadius | Input | number | 10 | Source aperture radius (mm). |
| DeltaT | Input | number | 250 | TOF spread (microsec). |
This algorithm extends the TOFSANSResolution to implement the experimentally determined TOF resolution for EQSANS.
The Q resolution for a TOF SANS has two components: a geometrical contribution and a contributions from the resolution in TOF.
The TOF resolution for EQSANS was measured to be:
\Delta T = y_0 + A ( f/(1+\exp((\lambda-x^0_1)/k_1)) + (1-f)/(1+\exp((\lambda-x^0_2)/k_2)) )
where \lambda is the wavelength and
y_0 = -388
A = 3838
f = 0.04398
x^0_1 = 3.392
x^0_2 = 134.3
k_1 = -0.5587
k_2 = -65.46
This algorithm is generally not called directly. It’s called by EQSANSAzimuthalAverage1D after the calculation of I(Q). It can only be applied to an I(Q) workspace.
Categories: AlgorithmIndex | SANS