Gabriele Cosmo
103 lines
4.8 KiB
C++
103 lines
4.8 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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/// \file GB03BOptnSplitOrKillOnBoundary.hh
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/// \brief Definition of the GB03BOptnSplitOrKillOnBoundary class
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#ifndef GB03BOptnSplitOrKillOnBoundary_hh
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#define GB03BOptnSplitOrKillOnBoundary_hh 1
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#include "G4ParticleChange.hh"
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#include "G4ParticleChangeForNothing.hh"
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#include "G4VBiasingOperation.hh"
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class G4LogicalVolume;
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class GB03BOptnSplitOrKillOnBoundary : public G4VBiasingOperation
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{
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public:
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// -- Constructor :
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GB03BOptnSplitOrKillOnBoundary(G4String name);
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// -- destructor:
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~GB03BOptnSplitOrKillOnBoundary() override;
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public:
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// ----------------------------------------------
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// -- Methods from G4VBiasingOperation interface:
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// ----------------------------------------------
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// -- Unused:
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const G4VBiasingInteractionLaw*
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ProvideOccurenceBiasingInteractionLaw(const G4BiasingProcessInterface*,
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G4ForceCondition&) override
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{
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return nullptr;
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}
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G4VParticleChange* ApplyFinalStateBiasing(const G4BiasingProcessInterface*, const G4Track*,
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const G4Step*, G4bool&) override
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{
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return nullptr;
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}
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// -- Used methods ("non-physics biasing methods"):
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// ------------------------------------------------
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// -- Method to return the distance or the condition under which
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// -- requesting the biasing. The "condition" flag will be indeed
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// -- used to apply the operation on the geometry boundary.
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G4double DistanceToApplyOperation(const G4Track*, G4double,
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G4ForceCondition* condition) override;
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// -- Method the generate the final state, ie, either the final states
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// -- corresponding to the splitting or killing cases:
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G4VParticleChange* GenerateBiasingFinalState(const G4Track*, const G4Step*) override;
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// -- Specific to this example:
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// ----------------------------
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// -- Set the integer splitting factor (should be >= 2):
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// -- This determines also the killing probability : 1/splittingFactor
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void SetSplittingFactor(G4int splittingFactor) { fSplittingFactor = splittingFactor; }
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// -- An "invention" (?) of this example: defines a probability
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// -- to apply the splitting(killing) techniques:
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// -- - If proba == 1, the technique is applied normally
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// -- - if proba < 1 (say 70%) then the splitting(killing) is
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// -- applied in only 70% of the cases.
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// -- This "trick" is useful when the desired splitting factor
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// -- would rather be a non-integer value, ie in case where:
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// -- splittingFactor = k is (a bit) too small
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// -- splittingFactor = k+1 is (a bit) too large
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// -- then the proba can allow to tune an in between application
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// -- of the technique.
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// -- Specially useful when wanting to split between "1 and 2".
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void SetApplyProbability(G4double proba) { fApplyProbability = proba; }
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G4int GetSplittingFactor() const { return fSplittingFactor; }
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G4double GetApplyProbability() const { return fApplyProbability; }
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private:
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G4ParticleChange fParticleChange;
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G4ParticleChangeForNothing fParticleChangeForNothing;
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G4int fSplittingFactor;
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G4double fApplyProbability;
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};
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#endif
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