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//
// ********************************************************************
// * License and Disclaimer *
// * *
// * The Geant4 software is copyright of the Copyright Holders of *
// * the Geant4 Collaboration. It is provided under the terms and *
// * conditions of the Geant4 Software License, included in the file *
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// * *
// * This code implementation is the result of the scientific and *
// * technical work of the GEANT4 collaboration. *
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// ********************************************************************
//
/// \file SteppingAction.hh
/// \brief Definition of the SteppingAction class
#ifndef SteppingAction_H
#define SteppingAction_H 1
#include "G4ThreeVector.hh"
#include "G4UserSteppingAction.hh"
#include "globals.hh"
#include <array>
class Run;
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class SteppingAction : public G4UserSteppingAction
{
public:
SteppingAction();
~SteppingAction() override = default;
void UserSteppingAction(const G4Step*) override;
// This is the main method where the step lengths of particles inside
// the scoring shell are collected, and then the corresponding fluences
// are filled up in the Run object where they are stored (and then
// printed out at the end of the Run).
// (For simplicity and brevity, we avoid histograms and compute instead
// some statistics ourself, which will be print-out at the end of the run.)
void Initialize();
// This method is called by RunAction::BeginOfRunAction for the
// initialization of the stepping-action at the beginning of each Run.
// This is necessary because different runs can have different primary particle
// types, kinetic energies, and detector configurations.
void SetRunPointer(Run* inputValue = nullptr) { fRunPtr = inputValue; }
// This method is called by RunAction::BeginOfRunAction for providing to the
// stepping-action the pointer to the run object at the beginning of each Run.
// This pointer is then used to pass the information collected by the stepping-action
// to the run object.
G4double GetCubicVolumeScoringShell() const { return fCubicVolumeScoringShell; }
// The cubic-volume of the scoring shell is needed to get the fluence from the
// sum of step lengths inside that scoring shell.
static const G4int fkNumberKinematicRegions = 3; // all, below 20 MeV, above 20 MeV
static const G4int fkNumberScoringPositions = 2; // forward, backward (hemisphere with
// respect to the primary particle direction)
static const G4int fkNumberParticleTypes = 11; // all, e, gamma, mu, nu, pi, n, p, ions,
// other-mesons, other-baryons
static const G4int fkNumberCombinations =
fkNumberKinematicRegions * fkNumberScoringPositions * fkNumberParticleTypes;
static const std::array<G4String, fkNumberKinematicRegions> fkArrayKinematicRegionNames;
static const std::array<G4String, fkNumberScoringPositions> fkArrayScoringPositionNames;
static const std::array<G4String, fkNumberParticleTypes> fkArrayParticleTypeNames;
static G4int GetIndex(const G4int iKinematicRegion, const G4int iScoringPosition,
const G4int iParticleType);
private:
Run* fRunPtr; // Pointer to the Run object
G4int fPrimaryParticleId;
G4double fPrimaryParticleEnergy;
G4ThreeVector fPrimaryParticleDirection;
G4String fTargetMaterialName;
G4bool fIsFirstStepOfTheEvent;
G4bool fIsFirstStepInTarget;
G4bool fIsFirstStepInScoringShell;
G4double fCubicVolumeScoringShell;
std::array<G4double, fkNumberCombinations> fArraySumStepLengths;
// Array to collect the sum of step lengths in the scoring shell for the whole run,
// according to the various cases (kinematical region, scoring position and particle type).
// Note that the fluence in a scoring volume is defined as sum of step lengths
// in that scoring volume divided by the cubic-volume of that scoring volume.
};
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
#endif