Gabriele Cosmo
335 lines
11 KiB
C++
335 lines
11 KiB
C++
//
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// ********************************************************************
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// * DISCLAIMER *
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// * *
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// * The following disclaimer summarizes all the specific disclaimers *
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// * of contributors to this software. The specific disclaimers,which *
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// * govern, are listed with their locations in: *
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// * http://cern.ch/geant4/license *
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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. *
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// * *
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// * This code implementation is the intellectual property of the *
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// * GEANT4 collaboration. *
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// * By copying, distributing or modifying the Program (or any work *
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// * based on the Program) you indicate your acceptance of this *
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// * statement, and all its terms. *
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// ********************************************************************
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//
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// $Id: G4VEmProcess.hh,v 1.1 2003/10/13 10:52:51 vnivanch Exp $
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// GEANT4 tag $Name: geant4-06-00 $
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//
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// -------------------------------------------------------------------
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//
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// GEANT4 Class header file
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//
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//
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// File name: G4VEmProcess
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//
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// Author: Vladimir Ivanchenko on base of Laszlo Urban code
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//
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// Creation date: 01.10.2003
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//
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// Modifications:
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//
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//
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// Class Description:
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//
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// It is the unified process for e+ annililation at rest and in fly.
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// -------------------------------------------------------------------
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//
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#ifndef G4VEmProcess_h
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#define G4VEmProcess_h 1
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#include "G4VDiscreteProcess.hh"
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#include "globals.hh"
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#include "G4Material.hh"
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#include "G4MaterialCutsCouple.hh"
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#include "G4Track.hh"
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#include "G4EmModelManager.hh"
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#include "G4UnitsTable.hh"
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#include "G4ParticleDefinition.hh"
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class G4Step;
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class G4VEmModel;
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class G4VEmFluctuationModel;
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class G4DataVector;
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class G4VParticleChange;
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class G4PhysicsTable;
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class G4PhysicsVector;
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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class G4VEmProcess : public G4VDiscreteProcess
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{
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public:
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G4VEmProcess(const G4String& name,
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G4ProcessType type = fElectromagnetic);
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~G4VEmProcess();
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G4VParticleChange* PostStepDoIt(const G4Track&, const G4Step&);
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virtual void SecondariesPostStep(
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G4VEmModel*,
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const G4MaterialCutsCouple*,
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const G4DynamicParticle*,
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G4double& tcut,
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G4double& kinEnergy) = 0;
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virtual G4bool IsApplicable(const G4ParticleDefinition& p) = 0;
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// True for all charged particles
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virtual
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void BuildPhysicsTable(const G4ParticleDefinition&);
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// Build physics table during initialisation
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virtual void PrintInfoDefinition();
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// Print out of the class parameters
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G4PhysicsTable* BuildLambdaTable();
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void SetLambdaBinning(G4int nbins);
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// Binning for lambda table
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void SetMinKinEnergy(G4double e);
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G4double MinKinEnergy() const;
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// Min kinetic energy for tables
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void SetMaxKinEnergy(G4double e);
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G4double MaxKinEnergy() const;
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// Max kinetic energy for tables
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G4bool StorePhysicsTable(G4ParticleDefinition*,
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const G4String& directory,
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G4bool ascii = false);
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// Store PhysicsTable in a file.
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// Return false in case of failure at I/O
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G4bool RetrievePhysicsTable(G4ParticleDefinition*,
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const G4String& directory,
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G4bool ascii);
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// Retrieve Physics from a file.
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// (return true if the Physics Table can be build by using file)
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// (return false if the process has no functionality or in case of failure)
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// File name should is constructed as processName+particleName and the
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// should be placed under the directory specifed by the argument.
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void AddEmModel(G4int, G4VEmModel*, G4VEmFluctuationModel* fluc = 0,
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const G4Region* region = 0);
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// Add EM model coupled with fluctuation model for the region
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void UpdateEmModel(const G4String&, G4double, G4double);
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// Define new energy range for the model identified by the name
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// void SetLambdaTable(G4PhysicsTable* p);
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// G4PhysicsTable* LambdaTable() {return theLambdaTable;};
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G4double GetLambda(G4double kineticEnergy, const G4MaterialCutsCouple* couple);
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// It returns the Lambda of the process
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G4double MicroscopicCrossSection(G4double kineticEnergy,
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const G4MaterialCutsCouple* couple);
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// It returns the cross section of the process for energy/ material
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void SetIntegral(G4bool val) {integral = val;};
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G4bool IsIntegral() const {return integral;}
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G4double MeanFreePath(const G4Track& track,
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G4double previousStepSize,
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G4ForceCondition* condition);
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const G4ParticleDefinition* Particle() const;
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const G4ParticleDefinition* SecondaryParticle() const;
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protected:
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void SetParticle(const G4ParticleDefinition* p);
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void SetSecondaryParticle(const G4ParticleDefinition* p);
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virtual
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G4double GetMeanFreePath(const G4Track& track,
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G4double previousStepSize,
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G4ForceCondition* condition);
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virtual
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G4PhysicsVector* LambdaPhysicsVector(const G4MaterialCutsCouple*);
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virtual G4double MinPrimaryEnergy(const G4ParticleDefinition*,
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const G4Material*, G4double cut) = 0;
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G4VEmModel* SelectModel(G4double& kinEnergy);
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size_t CurrentMaterialCutsCoupleIndex() const {return currentMaterialIndex;};
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void ResetNumberOfInteractionLengthLeft();
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// reset (determine the value of)NumberOfInteractionLengthLeft
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private:
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void Initialise();
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void DefineMaterial(const G4MaterialCutsCouple* couple);
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// hide assignment operator
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G4VEmProcess(G4VEmProcess &);
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G4VEmProcess & operator=(const G4VEmProcess &right);
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// =====================================================================
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private:
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G4EmModelManager* modelManager;
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// tables and vectors
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G4PhysicsTable* theLambdaTable;
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const G4ParticleDefinition* particle;
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const G4ParticleDefinition* baseParticle;
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const G4ParticleDefinition* secondaryParticle;
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const G4DataVector* theCuts;
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// cash
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const G4Material* currentMaterial;
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const G4MaterialCutsCouple* currentCouple;
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size_t currentMaterialIndex;
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G4int nLambdaBins;
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G4double minKinEnergy;
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G4double maxKinEnergy;
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G4double preStepLambda;
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G4double preStepKinEnergy;
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G4bool integral;
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G4bool meanFreePath;
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};
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline void G4VEmProcess::DefineMaterial(const G4MaterialCutsCouple* couple)
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{
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if(couple != currentCouple) {
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currentCouple = couple;
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currentMaterial = couple->GetMaterial();
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currentMaterialIndex = couple->GetIndex();
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if(integral && !meanFreePath) ResetNumberOfInteractionLengthLeft();
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline G4double G4VEmProcess::GetMeanFreePath(const G4Track& track,
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G4double,
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G4ForceCondition* cond)
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{
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*cond = NotForced;
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DefineMaterial(track.GetMaterialCutsCouple());
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preStepKinEnergy = track.GetKineticEnergy();
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if (meanFreePath) {
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G4bool b;
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preStepLambda = (((*theLambdaTable)[currentMaterialIndex])->
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GetValue(preStepKinEnergy, b));
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if (integral) meanFreePath = false;
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}
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G4double x = DBL_MAX;
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if(0.0 < preStepLambda) x = 1.0/preStepLambda;
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// G4cout << GetProcessName() << ": e= " << preStepKinEnergy << " mfp= " << x << G4endl;
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return x;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline void G4VEmProcess::ResetNumberOfInteractionLengthLeft()
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{
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meanFreePath = true;
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G4VProcess::ResetNumberOfInteractionLengthLeft();
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline G4VEmModel* G4VEmProcess::SelectModel(G4double& kinEnergy)
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{
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return modelManager->SelectModel(kinEnergy, currentMaterialIndex);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline const G4ParticleDefinition* G4VEmProcess::Particle() const
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{
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return particle;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline const G4ParticleDefinition* G4VEmProcess::SecondaryParticle() const
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{
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return secondaryParticle;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline void G4VEmProcess::SetLambdaBinning(G4int nbins)
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{
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nLambdaBins = nbins;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline void G4VEmProcess::SetMinKinEnergy(G4double e)
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{
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minKinEnergy = e;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline G4double G4VEmProcess::MinKinEnergy() const
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{
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return minKinEnergy;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline void G4VEmProcess::SetMaxKinEnergy(G4double e)
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{
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maxKinEnergy = e;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline G4double G4VEmProcess::MaxKinEnergy() const
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{
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return maxKinEnergy;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline G4double G4VEmProcess::GetLambda(G4double kineticEnergy,
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const G4MaterialCutsCouple* couple)
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{
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DefineMaterial(couple);
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G4double x = DBL_MAX;
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G4bool b;
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if(theLambdaTable) {
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G4double y = (((*theLambdaTable)[currentMaterialIndex])->GetValue(kineticEnergy, b));
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if(y > 0.0) x = 1.0/y;
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}
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return x;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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#endif
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