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EQSANSTofStructure.h
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EQSANSTofStructure.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"
#include "MantidAPI/MatrixWorkspace_fwd.h"
#include "MantidAlgorithms/DllConfig.h"
#include "MantidDataObjects/EventWorkspace.h"
namespace Mantid {
namespace Algorithms {
/**
Apply correction to EQSANS data to account for its TOF structure. The
algorithm modifies the
TOF values to correct for the fact that T_0 is not properly recorded by the
DAS.
File change history is stored at: <https://github.com/mantidproject/mantid>
Code Documentation is available at: <http://doxygen.mantidproject.org>
*/
// Pulse widge (micro sec per angstrom)
const double PULSEWIDTH = 20.0;
// Chopper phase offset (micro sec)
const double CHOPPER_PHASE_OFFSET[2][4] = {{9507., 9471., 9829.7, 9584.3}, {19024., 18820., 19714., 19360.}};
// Chopper angles (degree)
const double CHOPPER_ANGLE[4] = {129.605, 179.989, 230.010, 230.007};
// Chopper location (mm)
const double CHOPPER_LOCATION[4] = {5700., 7800., 9497., 9507.};
class MANTID_ALGORITHMS_DLL EQSANSTofStructure : public API::Algorithm {
public:
/// Default constructor
EQSANSTofStructure();
/// Algorithm's name
const std::string name() const override { return "EQSANSTofStructure"; }
/// Summary of algorithms purpose
const std::string summary() const override {
return "Corrects the TOF of raw EQSANS data. This algorithm needs to be "
"run once on every data set.";
}
/// Algorithm's version
int version() const override { return (1); }
/// Algorithm's category for identification
const std::string category() const override { return "SANS"; }
private:
/// Initialisation code
void init() override;
/// Execution code
void exec() override;
// void execEvent(Mantid::DataObjects::EventWorkspace_sptr inputWS, bool
// frame_skipping);
void execEvent(const Mantid::DataObjects::EventWorkspace_sptr &inputWS, double threshold, double frame_offset,
double tof_frame_width, double tmp_frame_width, bool frame_skipping);
/// Compute TOF offset
double getTofOffset(const DataObjects::EventWorkspace_const_sptr &inputWS, bool frame_skipping);
double frame_tof0;
bool flight_path_correction;
double low_tof_cut;
double high_tof_cut;
};
} // namespace Algorithms
} // namespace Mantid