Gabriele Cosmo
89 lines
3.9 KiB
C++
89 lines
3.9 KiB
C++
//
|
|
// ********************************************************************
|
|
// * 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 *
|
|
// * LICENSE and available at http://cern.ch/geant4/license . These *
|
|
// * include a list of copyright holders. *
|
|
// * *
|
|
// * Neither the authors of this software system, nor their employing *
|
|
// * institutes,nor the agencies providing financial support for this *
|
|
// * work make any representation or warranty, express or implied, *
|
|
// * regarding this software system or assume any liability for its *
|
|
// * use. Please see the license in the file LICENSE and URL above *
|
|
// * for the full disclaimer and the limitation of liability. *
|
|
// * *
|
|
// * This code implementation is the result of the scientific and *
|
|
// * technical work of the GEANT4 collaboration. *
|
|
// * By using, copying, modifying or distributing the software (or *
|
|
// * any work based on the software) you agree to acknowledge its *
|
|
// * use in resulting scientific publications, and indicate your *
|
|
// * acceptance of all terms of the Geant4 Software license. *
|
|
// ********************************************************************
|
|
//
|
|
// G4BOptnChangeCrossSection
|
|
//
|
|
// Class Description:
|
|
//
|
|
// A G4VBiasingOperation to change a process cross-section.
|
|
//
|
|
// Author: Marc Verderi, November 2013
|
|
// --------------------------------------------------------------------
|
|
#ifndef G4BOptnChangeCrossSection_hh
|
|
#define G4BOptnChangeCrossSection_hh 1
|
|
|
|
#include "G4VBiasingOperation.hh"
|
|
|
|
class G4InteractionLawPhysical;
|
|
|
|
class G4BOptnChangeCrossSection : public G4VBiasingOperation
|
|
{
|
|
public:
|
|
|
|
// -- Constructor :
|
|
G4BOptnChangeCrossSection(const G4String& name);
|
|
// -- destructor:
|
|
virtual ~G4BOptnChangeCrossSection();
|
|
|
|
// -- Methods from G4VBiasingOperation interface:
|
|
// ----------------------------------------------
|
|
// -- Used:
|
|
virtual const G4VBiasingInteractionLaw*
|
|
ProvideOccurenceBiasingInteractionLaw( const G4BiasingProcessInterface*,
|
|
G4ForceCondition& proposeForceCondition );
|
|
|
|
// -- Unused:
|
|
virtual G4VParticleChange*
|
|
ApplyFinalStateBiasing( const G4BiasingProcessInterface*,
|
|
const G4Track*, const G4Step*, G4bool& ) { return nullptr; }
|
|
virtual G4double DistanceToApplyOperation( const G4Track*,
|
|
G4double, G4ForceCondition* ) { return DBL_MAX; }
|
|
virtual G4VParticleChange* GenerateBiasingFinalState( const G4Track*,
|
|
const G4Step* ) { return nullptr; }
|
|
|
|
// -- Additional methods, specific to this class:
|
|
// ----------------------------------------------
|
|
// -- return concrete type of interaction law:
|
|
G4InteractionLawPhysical* GetBiasedExponentialLaw() { return fBiasedExponentialLaw; }
|
|
// -- set biased cross-section:
|
|
void SetBiasedCrossSection(G4double xst, G4bool updateInteractionLength=false);
|
|
G4double GetBiasedCrossSection() const;
|
|
// -- Sample underneath distribution:
|
|
void Sample();
|
|
// -- Update for a made step, without resampling:
|
|
void UpdateForStep( G4double stepLength );
|
|
// -- set/get if interaction occured.
|
|
// -- Interaction flag turned off in "Sample()" method.
|
|
G4bool GetInteractionOccured() const { return fInteractionOccured; }
|
|
void SetInteractionOccured() { fInteractionOccured = true; }
|
|
|
|
private:
|
|
|
|
G4InteractionLawPhysical* fBiasedExponentialLaw = nullptr;
|
|
G4bool fInteractionOccured = false;
|
|
};
|
|
|
|
#endif
|