Gabriele Cosmo
242 lines
8.2 KiB
C++
242 lines
8.2 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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//
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//
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// This is the top level Hadronic Process class
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// The inelastic, elastic, capture, and fission processes
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// should derive from this class
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// This is an abstract base class, since the pure virtual function
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// PostStepDoIt has not been defined yet.
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// Note: there is no .cc file
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//
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// original by H.P.Wellisch
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// J.L. Chuma, TRIUMF, 10-Mar-1997
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// Last modified: 04-Apr-1997
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#ifndef G4HadronicProcess_h
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#define G4HadronicProcess_h 1
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#include "globals.hh"
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#include "G4VDiscreteProcess.hh"
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#include "G4EnergyRangeManager.hh"
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#include "G4Nucleus.hh"
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#include "G4ReactionProduct.hh"
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#include <vector>
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#include "G4VIsotopeProduction.hh"
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#include "G4IsoParticleChange.hh"
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#include "G4VCrossSectionDataSet.hh"
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#include "G4VLeadingParticleBiasing.hh"
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#include "G4Delete.hh"
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#include "G4CrossSectionDataStore.hh"
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#include "G4HadronicException.hh"
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class G4Track;
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class G4Step;
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class G4Element;
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class G4ParticleChange;
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class G4HadronicProcess : public G4VDiscreteProcess
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{
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public:
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G4HadronicProcess( const G4String &processName = "Hadronic",
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G4ProcessType aType = fHadronic );
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virtual ~G4HadronicProcess();
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void RegisterMe( G4HadronicInteraction *a );
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void AddDataSet(G4VCrossSectionDataSet * aDataSet)
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{
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theCrossSectionDataStore->AddDataSet(aDataSet);
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}
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virtual G4VParticleChange *PostStepDoIt( const G4Track &aTrack,
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const G4Step &aStep ) = 0;
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virtual
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G4double GetMicroscopicCrossSection(const G4DynamicParticle *aParticle,
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const G4Element *anElement,
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G4double aTemp ) = 0;
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G4double GetMeanFreePath(const G4Track &aTrack, G4double,
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G4ForceCondition *);
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// Set methods for isotope production
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static void EnableIsotopeProductionGlobally();
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static void DisableIsotopeProductionGlobally();
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void EnableIsotopeCounting() {isoIsOnAnyway = 1;}
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void DisableIsotopeCounting() {isoIsOnAnyway = -1;}
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void RegisterIsotopeProductionModel(G4VIsotopeProduction * aModel)
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{ theProductionModels.push_back(aModel); }
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static G4IsoParticleChange * GetIsotopeProductionInfo()
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{
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G4IsoParticleChange * anIsoResult = theIsoResult;
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if(theIsoResult) theOldIsoResult = theIsoResult;
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theIsoResult = 0;
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return anIsoResult;
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}
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void BiasCrossSectionByFactor(G4double aScale)
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{
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xBiasOn = true;
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aScaleFactor = aScale;
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G4String it = GetProcessName();
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if( (it != "PhotonInelastic") &&
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(it != "ElectroNuclear") &&
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(it != "PositronNuclear") )
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{
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G4Exception("G4HadronicProcess", "007", FatalException,
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"Cross-section biasing available only for gamma and electro nuclear reactions.");
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}
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if(aScale<100)
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{
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G4Exception("G4HadronicProcess", "001", JustWarning,
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"Cross-section bias readjusted to be above safe limit. New value is 100");
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aScaleFactor = 100.;
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}
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}
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protected:
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virtual void ResetNumberOfInteractionLengthLeft()
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{
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G4VProcess::theNumberOfInteractionLengthLeft =
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-std::log( G4UniformRand() );
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theInitialNumberOfInteractionLength =
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G4VProcess::theNumberOfInteractionLengthLeft;
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}
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G4VParticleChange *GeneralPostStepDoIt( const G4Track &aTrack,
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const G4Step &aStep );
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void SetDispatch( G4HadronicProcess *value )
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{ dispatch=value; }
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G4Element* ChooseAandZ(const G4DynamicParticle *aParticle,
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const G4Material *aMaterial);
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inline const G4EnergyRangeManager &GetEnergyRangeManager() const
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{ return theEnergyRangeManager; }
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inline void SetEnergyRangeManager( const G4EnergyRangeManager &value )
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{ theEnergyRangeManager = value; }
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inline G4HadronicInteraction *ChooseHadronicInteraction(
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G4double kineticEnergy, G4Material *aMaterial, G4Element *anElement )
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{
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G4EnergyRangeManager* ERMan = GetManagerPointer();
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if(!ERMan->GetHadronicInteractionCounter())
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G4cout<< "*G4HadronicProcess::ChooseHadronicInteraction: process = "
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<< GetProcessName() << ", nM="
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<< ERMan->GetHadronicInteractionCounter() << G4endl;
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return ERMan->GetHadronicInteraction(kineticEnergy,aMaterial,anElement);
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}
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inline G4HadronicInteraction *GetHadronicInteraction()
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{ return theInteraction; }
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public:
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inline G4EnergyRangeManager *GetManagerPointer()
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{ return &theEnergyRangeManager; }
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protected:
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G4CrossSectionDataStore* GetCrossSectionDataStore()
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{
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return theCrossSectionDataStore;
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}
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G4double GetLastCrossSection() {return theLastCrossSection;}
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private:
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G4HadFinalState * DoIsotopeCounting(G4HadFinalState * aResult,
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const G4Track & aTrack,
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const G4Nucleus & aNucleus);
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G4IsoResult * ExtractResidualNucleus(const G4Track & aTrack,
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const G4Nucleus & aNucleus,
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G4HadFinalState * aResult);
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G4double GetTotalNumberOfInteractionLengthTraversed()
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{
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return theInitialNumberOfInteractionLength
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-G4VProcess::theNumberOfInteractionLengthLeft;
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}
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void FillTotalResult(G4HadFinalState * aR, const G4Track & aT);
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void SetCrossSectionDataStore(G4CrossSectionDataStore* aDataStore)
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{
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theCrossSectionDataStore = aDataStore;
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}
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G4double XBiasSurvivalProbability();
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G4double XBiasSecondaryWeight();
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private:
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G4EnergyRangeManager theEnergyRangeManager;
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G4HadronicInteraction *theInteraction;
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G4CrossSectionDataStore* theCrossSectionDataStore;
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G4Nucleus targetNucleus;
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G4HadronicProcess *dispatch;
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// swiches for isotope production
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static G4bool isoIsEnabled; // true or false; local swich overrides
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G4int isoIsOnAnyway; // true(1), false(-1) or default(0)
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G4IsoParticleChange theIsoPC;
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std::vector<G4VIsotopeProduction *> theProductionModels;
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std::vector<G4VLeadingParticleBiasing *> theBias;
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static G4IsoParticleChange* theIsoResult;
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static G4IsoParticleChange* theOldIsoResult;
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G4ParticleChange* theTotalResult;
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G4double theInitialNumberOfInteractionLength;
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G4double aScaleFactor;
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G4bool xBiasOn;
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G4double theLastCrossSection;
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G4int ModelingState;
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};
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#endif
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