Gabriele Cosmo
110 lines
4.8 KiB
C++
110 lines
4.8 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. *
|
|
// ********************************************************************
|
|
//
|
|
/// \file GB01BOptrChangeCrossSection.hh
|
|
/// \brief Definition of the GB01BOptrChangeCrossSection class
|
|
|
|
//---------------------------------------------------------------
|
|
//
|
|
// GB01BOptrChangeCrossSection
|
|
//
|
|
// Class Description:
|
|
// A G4VBiasingOperator concrete implementation example to
|
|
// illustrate how to bias physics processes cross-section for
|
|
// one particle type.
|
|
// The G4VBiasingOperation G4BOptnChangeCrossSection is
|
|
// selected by this operator, and is sent to each process
|
|
// calling the operator.
|
|
// A simple constant bias to the cross-section is applied,
|
|
// but more sophisticated changes can be applied.
|
|
//
|
|
//---------------------------------------------------------------
|
|
//
|
|
|
|
#ifndef GB01BOptrChangeCrossSection_hh
|
|
#define GB01BOptrChangeCrossSection_hh 1
|
|
|
|
#include "G4VBiasingOperator.hh"
|
|
class G4BOptnChangeCrossSection;
|
|
class G4ParticleDefinition;
|
|
#include <map>
|
|
|
|
class GB01BOptrChangeCrossSection : public G4VBiasingOperator
|
|
{
|
|
public:
|
|
// ------------------------------------------------------------
|
|
// -- Constructor: takes the name of the particle type to bias:
|
|
// ------------------------------------------------------------
|
|
GB01BOptrChangeCrossSection(G4String particleToBias, G4String name = "ChangeXS");
|
|
~GB01BOptrChangeCrossSection() override;
|
|
|
|
// -- method called at beginning of run:
|
|
void StartRun() override;
|
|
|
|
private:
|
|
// -----------------------------
|
|
// -- Mandatory from base class:
|
|
// -----------------------------
|
|
// -- This method returns the biasing operation that will bias the physics process occurence.
|
|
G4VBiasingOperation*
|
|
ProposeOccurenceBiasingOperation(const G4Track* track,
|
|
const G4BiasingProcessInterface* callingProcess) override;
|
|
// -- Methods not used:
|
|
G4VBiasingOperation*
|
|
ProposeFinalStateBiasingOperation(const G4Track*, const G4BiasingProcessInterface*) override
|
|
{
|
|
return nullptr;
|
|
}
|
|
G4VBiasingOperation*
|
|
ProposeNonPhysicsBiasingOperation(const G4Track*, const G4BiasingProcessInterface*) override
|
|
{
|
|
return nullptr;
|
|
}
|
|
|
|
private:
|
|
// -- ("using" is avoid compiler complaining against (false) method shadowing.)
|
|
using G4VBiasingOperator::OperationApplied;
|
|
|
|
// -- Optionnal base class method implementation.
|
|
// -- This method is called to inform the operator that a proposed operation has been applied.
|
|
// -- In the present case, it means that a physical interaction occured (interaction at
|
|
// -- PostStepDoIt level):
|
|
void OperationApplied(const G4BiasingProcessInterface* callingProcess,
|
|
G4BiasingAppliedCase biasingCase,
|
|
G4VBiasingOperation* occurenceOperationApplied,
|
|
G4double weightForOccurenceInteraction,
|
|
G4VBiasingOperation* finalStateOperationApplied,
|
|
const G4VParticleChange* particleChangeProduced) override;
|
|
|
|
private:
|
|
// -- List of associations between processes and biasing operations:
|
|
std::map<const G4BiasingProcessInterface*, G4BOptnChangeCrossSection*>
|
|
fChangeCrossSectionOperations;
|
|
G4bool fSetup;
|
|
const G4ParticleDefinition* fParticleToBias;
|
|
};
|
|
|
|
#endif
|