Commit a53bc4aa authored by Lynch, Vickie's avatar Lynch, Vickie
Browse files

Refs #14857 add documentation

parent ba84695d
......@@ -97,7 +97,7 @@ IntegrateIfOnEdge option
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Edges for each bank or pack of tubes of the instrument are defined by masking the edges in the PeaksWorkspace instrument.
e.g. For CORELLI, tubes 1 and 16, and pixels 0 and 255.
e.g. For TOPAZ pixels 0 and 255 in both directions for the Rectangular Detector.
Q in the lab frame for every peak is calculated, call it C
For every point on the edge, the trajectory in reciprocal space is a straight line, going through:
......@@ -124,6 +124,42 @@ for the integration, one of the detector trajectories on the edge is too close t
This method is also applied to all masked pixels. If there are masked pixels trajectories inside an integration volume, the peak must be rejected.
CorrectIfOnEdge option
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This is an extension of what was calculated for the IntegrateIfOnEdge option. It will only be calculated if this option
is true and for the background
:math:`\left|dv\right|<BackgroundOuterRadius`
:math:`h = BackgroundOuterRadius - \left|dv\right|`
:math:`r = BackgroundOuterRadius`
or for the peak (assume that the shape is Gaussian)
:math:`\left|dv\right|<PeakRadius`
:math:`\sigma = PeakRadius / 3`
:math:`h = PeakRadius * exp(-\left|dv\right|^2 / (2 \sigma^2)`
:math:`r = PeakRadius`
The minimum of dv is calculated for each peak and from that value the volume of the cap of the sphere is found:
:math:`V_{cap} = \pi h^2 / 3 (3r - h)`
and the volume of the sphere is calculated
:math:`V_{sphere} = 4/3 \pi r^3`
The integrated intensity is multiplied by the ratio of the volume of the sphere divided by the volume where data was collected
:math:`I_{multiplier} = V_{sphere} / (V_{sphere} - V_{cap})`
Usage
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