Gabriele Cosmo
177 lines
7.0 KiB
C++
177 lines
7.0 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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//
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// $Id: G4MuPairProduction.hh,v 1.12 2001/10/29 13:53:18 maire Exp $
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// GEANT4 tag $Name: geant4-05-00 $
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//
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//--------------- G4MuPairProduction physics process ------------------
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// by Laszlo Urban, May 1998
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//------------------------------------------------------------------------------
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// 10-02-00 modifications , new e.m. structure, L.Urban
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// 10-08-01 new methods Store/Retrieve PhysicsTable (mma)
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// 29-10-01 all static functions no more inlined (mma)
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//------------------------------------------------------------------------------
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#ifndef G4MuPairproduction_h
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#define G4MuPairproduction_h 1
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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#include "G4ios.hh"
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#include "globals.hh"
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#include "Randomize.hh"
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#include "G4VMuEnergyLoss.hh"
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#include "G4Track.hh"
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#include "G4Step.hh"
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#include "G4OrderedTable.hh"
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#include "G4PhysicsTable.hh"
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#include "G4PhysicsLogVector.hh"
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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class G4MuPairProduction : public G4VMuEnergyLoss
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{
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public:
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G4MuPairProduction(const G4String& processName = "MuPairProd");
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~G4MuPairProduction();
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G4bool IsApplicable(const G4ParticleDefinition&);
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void BuildPhysicsTable(const G4ParticleDefinition& ParticleType);
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void BuildLossTable(const G4ParticleDefinition& ParticleType);
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void BuildLambdaTable(const G4ParticleDefinition& ParticleType);
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void PrintInfoDefinition();
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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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G4VParticleChange *PostStepDoIt(const G4Track& track,
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const G4Step& Step );
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G4double GetDMicroscopicCrossSection(
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const G4ParticleDefinition* ParticleType,
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G4double KineticEnergy,
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G4double AtomicNumber,
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G4double PairEnergy);
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G4bool StorePhysicsTable(G4ParticleDefinition* ,
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const G4String& directory, G4bool);
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// store eLoss and MeanFreePath tables into an external file
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// specified by 'directory' (must exist before invokation)
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G4bool RetrievePhysicsTable(G4ParticleDefinition* ,
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const G4String& directory, G4bool);
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// retrieve eLoss and MeanFreePath tables from an external file
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// specified by 'directory'
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protected:
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G4double ComputeMeanFreePath(const G4ParticleDefinition* ParticleType,
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G4double KineticEnergy,
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const G4Material* aMaterial);
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void ComputePartialSumSigma(const G4ParticleDefinition* ParticleType,
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G4double KineticEnergy,
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const G4Material* aMaterial);
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virtual G4double ComputeMicroscopicCrossSection(
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const G4ParticleDefinition* ParticleType,
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G4double KineticEnergy,
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G4double AtomicNumber,
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G4double ElectronEnergyCut,
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G4double PositronEnergyCut);
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G4double ComputeDDMicroscopicCrossSection(
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const G4ParticleDefinition* ParticleType,
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G4double KineticEnergy,
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G4double AtomicNumber,
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G4double PairEnergy,
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G4double asymmetry);
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G4double ComputeDMicroscopicCrossSection(
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const G4ParticleDefinition* ParticleType,
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G4double KineticEnergy,
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G4double AtomicNumber,
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G4double PairEnergy);
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private:
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G4MuPairProduction & operator=(const G4MuPairProduction &right);
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G4MuPairProduction(const G4MuPairProduction&);
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G4double ComputePairLoss( const G4ParticleDefinition* ParticleType,
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G4double Z,G4double T,G4double ElectronCut,
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G4double PositronCut);
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G4Element* SelectRandomAtom(G4Material* aMaterial) const;
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void MakeSamplingTables( const G4ParticleDefinition* ParticleType );
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private:
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G4PhysicsTable* theMeanFreePathTable;
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G4OrderedTable PartialSumSigma;
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static G4double LowerBoundLambda; // bining for lambda table
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static G4double UpperBoundLambda;
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static G4int NbinLambda;
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G4double LowestKineticEnergy,HighestKineticEnergy;
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G4int TotBin;
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const G4double* ElectronCutInKineticEnergy;
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const G4double* PositronCutInKineticEnergy;
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G4double ElectronCutInKineticEnergyNow;
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G4double PositronCutInKineticEnergyNow;
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// tables for sampling
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static G4int nzdat,ntdat,NBIN;
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static G4double zdat[5],tdat[8];
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static G4double ya[1001],proba[5][8][1001];
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static G4double MinPairEnergy;
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public:
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static void SetLowerBoundLambda(G4double val);
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static void SetUpperBoundLambda(G4double val);
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static void SetNbinLambda(G4int n);
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static G4double GetLowerBoundLambda();
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static G4double GetUpperBoundLambda();
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static G4int GetNbinLambda();
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};
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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#include "G4MuPairProduction.icc"
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#endif
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