Gabriele Cosmo
188 lines
5.5 KiB
C++
188 lines
5.5 KiB
C++
// This code implementation is the intellectual property of
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// the GEANT4 collaboration.
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//
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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 statement,
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// and all its terms.
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//
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// $Id: G4PAIonisation.hh,v 1.7 2000/09/22 14:44:07 grichine Exp $
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// GEANT4 tag $Name: geant4-03-00 $
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//
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//
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// ------------------------------------------------------------
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// GEANT 4 class header file
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//
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// For information related to this code contact:
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// CERN, IT Division, ASD group
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// History: based on object model of
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// 2nd December 1995, G.Cosmo
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// ---------- G4hIonisation physics process -----------
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// by V. Grichine, 30 Nov 1997
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// ************************************************************
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// It is the first implementation of the NEW IONISATION
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// PROCESS. ( delta rays + continuous energy loss)
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// It calculates the ionisation for charged hadrons.
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// ************************************************************
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//
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// corrected by V. Grichine on 24/11/97
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// 12.07.00 V.Grichine GetFreePath and GetdEdx were added
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// 22.09.00 V.Grichine and K.Assamagan new function GetEnergyTransfer(G4d,G4i)
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#ifndef G4PAIonisation_h
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#define G4PAIonisation_h 1
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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 "G4VPAIenergyLoss.hh"
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#include "globals.hh"
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#include "G4Track.hh"
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#include "G4Step.hh"
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#include "G4Electron.hh"
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#include "G4PhysicsLogVector.hh"
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#include "G4PhysicsLinearVector.hh"
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#include "G4PhysicsFreeVector.hh"
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#include "G4PhysicsVector.hh"
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class G4PAIonisation : public G4VPAIenergyLoss
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{
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public:
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G4PAIonisation( const G4String& materialName,
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const G4String& processName = "PAIonisation");
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~G4PAIonisation();
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G4bool IsApplicable(const G4ParticleDefinition&);
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private:
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// hide assignment operator
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G4PAIonisation & operator=(const G4PAIonisation &right);
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G4PAIonisation(const G4PAIonisation&);
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public:
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// post Step functions .......................................
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G4double GetConstraints(const G4DynamicParticle *aParticle,
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G4Material *aMaterial);
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G4VParticleChange *PostStepDoIt( const G4Track& track,
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const G4Step& Step ) ;
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// void BuildLossTable(const G4ParticleDefinition& aParticleType);
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void BuildLambdaTable(const G4ParticleDefinition& aParticleType);
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void BuildPhysicsTable(const G4ParticleDefinition& aParticleType);
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void BuildPAIonisationTable() ;
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virtual G4double ComputeMicroscopicCrossSection(
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const G4ParticleDefinition& aParticleType,
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G4double KineticEnergy,
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G4double AtomicNumber);
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// Along step DoIt stuff
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G4double GetContinuousStepLimit(
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const G4Track& track,
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G4double previousStepSize,
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G4double currentMinimumStep,
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G4double& currentSafety) ;
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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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G4double GetFreePath( G4double scaledTkin, G4double charge2 ) ;
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G4double GetdEdx( G4double scaledTkin, G4double charge2 ) ;
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G4VParticleChange* AlongStepDoIt(const G4Track& track ,const G4Step& Step) ;
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G4double GetLossWithFluct(G4double Step,
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const G4DynamicParticle *aParticle,
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G4Material *aMaterial) ;
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G4double GetRandomEnergyTransfer( G4double scaledTkin ) ;
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G4double GetEnergyTransfer( G4int iPlace, G4double position, G4int iTransfer ) ;
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// static
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static G4double GetMaxKineticEnergy() { return HighestKineticEnergy ; } ;
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static G4double GetMinKineticEnergy() { return LowestKineticEnergy ; } ;
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static G4int GetBinNumber() { return TotBin ; } ;
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// Access to Sandia table coefficients
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G4int GetSandiaIntervalNumber() const {return fSandiaIntervalNumber;};
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G4double GetSandiaPhotoAbsCof(G4int, G4int) const;
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// Compute Sandia photoabsorption coefficient matrix
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void ComputeSandiaPhotoAbsCof() ;
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private:
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// private data members
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G4int fMatIndex ; // index of material, where dE/dx is calculated
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G4PhysicsTable* theMeanFreePathTable;
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// LowestKineticEnergy = lower limit of particle kinetic energy
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// HighestKineticEnergy = upper limit of particle kinetic energy
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// TotBin = number of bins in the energy ionisation loss table
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//
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static const G4double LowestKineticEnergy;
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static const G4double HighestKineticEnergy;
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static G4int TotBin;
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static G4PhysicsLogVector* fProtonEnergyVector ;
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// cut in range
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G4double CutInRange ;
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G4double lastCutInRange ;
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// particles , cuts in kinetic energy
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const G4Electron* theElectron;
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const G4Proton* theProton;
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const G4AntiProton* theAntiProton;
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const G4double* ParticleCutInKineticEnergy;
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const G4double* DeltaCutInKineticEnergy ;
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G4double ParticleCutInKineticEnergyNow ;
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G4double DeltaCutInKineticEnergyNow ;
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// Sandia Photo Absorption Coefficients
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G4double** fSandiaPhotoAbsCof ;
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G4int fSandiaIntervalNumber ;
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};
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#include "G4PAIonisation.icc"
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#endif
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