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SANSSolidAngleCorrection.h
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SANSSolidAngleCorrection.h
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// Mantid Repository : https://github.com/mantidproject/mantid
//
// Copyright © 2018 ISIS Rutherford Appleton Laboratory UKRI,
// NScD Oak Ridge National Laboratory, European Spallation Source,
// Institut Laue - Langevin & CSNS, Institute of High Energy Physics, CAS
// SPDX - License - Identifier: GPL - 3.0 +
#pragma once
//----------------------------------------------------------------------
// Includes
//----------------------------------------------------------------------
#include "MantidAPI/Algorithm.h"
namespace Mantid {
namespace WorkflowAlgorithms {
/**
Performs a solid angle correction on a 2D SANS data set to correct
for the absence of curvature of the detector.
Note: one could use SolidAngle to perform this calculation. Solid Angle
returns the solid angle of each detector pixel, but that approach requires
more un-necessary calculations.
In the contrary, this algorithm performs analytical correction as follows:
Omega(theta) = Omega(0) cos^3(theta)
where Omega is the solid angle.
so we simply apply the
cos^3(theta).
Brulet et al, J. Appl. Cryst. (2007) 40, 165-177.
See equation 22.
Required Properties:
<UL>
<LI> InputWorkspace - The data in units of wavelength. </LI>
<LI> OutputWorkspace - The workspace in which to store the result
histogram. </LI>
</UL>
File change history is stored at: <https://github.com/mantidproject/mantid>
Code Documentation is available at: <http://doxygen.mantidproject.org>
*/
class DLLExport SANSSolidAngleCorrection : public API::Algorithm {
public:
/// Algorithm's name
const std::string name() const override { return "SANSSolidAngleCorrection"; }
/// Summary of algorithms purpose
const std::string summary() const override { return "Performs solid angle correction on SANS 2D data."; }
/// Algorithm's version
int version() const override { return (1); }
const std::vector<std::string> seeAlso() const override { return {"SolidAngle", "SANSBeamFluxCorrection"}; }
/// Algorithm's category for identification
const std::string category() const override {
return "Workflow\\SANS\\UsesPropertyManager;"
"CorrectionFunctions\\InstrumentCorrections";
}
private:
/// Initialisation code
void init() override;
/// Execution code
void exec() override;
void execEvent();
};
} // namespace WorkflowAlgorithms
} // namespace Mantid