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ReflectometryMomentumTransfer.h
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ReflectometryMomentumTransfer.h
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#ifndef MANTID_ALGORITHMS_REFLECTOMETRYMOMENTUMTRANSFER_H_
#define MANTID_ALGORITHMS_REFLECTOMETRYMOMENTUMTRANSFER_H_
#include "MantidAPI/Algorithm.h"
#include "MantidAlgorithms/DllConfig.h"
namespace Mantid {
namespace Algorithms {
/** Converts wavelength to momentum transfer and calculates the Qz
resolution for reflectometers at continuous beam sources.
Copyright © 2018 ISIS Rutherford Appleton Laboratory, NScD Oak Ridge
National Laboratory & European Spallation Source
This file is part of Mantid.
Mantid is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
Mantid is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
File change history is stored at: <https://github.com/mantidproject/mantid>
Code Documentation is available at: <http://doxygen.mantidproject.org>
*/
class MANTID_ALGORITHMS_DLL ReflectometryMomentumTransfer
: public API::Algorithm {
public:
const std::string name() const override;
int version() const override;
const std::string category() const override;
const std::string summary() const override;
private:
enum class SumType { LAMBDA, Q };
struct Setup {
double chopperOpening{0.};
double chopperPairDistance{0.};
double chopperPeriod{0.};
double chopperRadius{0.};
double detectorResolution{0.};
size_t foregroundStart{0};
size_t foregroundEnd{0};
size_t directForegroundStart{0};
size_t directForegroundEnd{0};
double l1{0.};
double l2{0.};
double pixelSize{0.};
bool polarized{false};
double slit1Slit2Distance{0.};
double slit1Size{0.};
double slit1SizeDirectBeam{0.};
double slit2SampleDistance{0.};
double slit2Size{0.};
double slit2SizeDirectBeam{0.};
SumType sumType{SumType::LAMBDA};
double tofChannelWidth{0.};
};
void init() override;
void exec() override;
double angularResolutionSquared(API::MatrixWorkspace_sptr &ws,
const API::MatrixWorkspace &directWS,
const size_t wsIndex, const Setup &setup,
const double beamFWHM,
const double directBeamFWHM,
const double incidentFWHM,
const double slit1FWHM);
double beamRMSVariation(API::MatrixWorkspace_sptr &ws, const size_t start,
const size_t end);
void convertToMomentumTransfer(API::MatrixWorkspace_sptr &ws);
double detectorAngularResolution(const API::MatrixWorkspace &ws,
const size_t wsIndex, const Setup &setup,
const double incidentFWHM);
const Setup createSetup(const API::MatrixWorkspace &ws,
const API::MatrixWorkspace &directWS);
double incidentAngularSpread(const Setup &setup);
double interslitDistance(const API::MatrixWorkspace &ws);
double sampleWaviness(API::MatrixWorkspace_sptr &ws,
const API::MatrixWorkspace &directWS,
const size_t wsIndex, const Setup &setup,
const double beamFWHM, const double directBeamFWHM,
const double incidentFWHM);
double slit1AngularSpread(const Setup &setup);
double slit2AngularSpread(const API::MatrixWorkspace &ws,
const size_t wsIndex, const Setup &setup);
double slitSize(const API::MatrixWorkspace &ws, const std::string &logEntry);
double wavelengthResolutionSquared(const API::MatrixWorkspace &ws,
const size_t wsIndex, const Setup &setup,
const double wavelength);
};
} // namespace Algorithms
} // namespace Mantid
#endif /* MANTID_ALGORITHMS_REFLECTOMETRYMOMENTUMTRANSFER_H_ */