Gabriele Cosmo
157 lines
4.9 KiB
C++
157 lines
4.9 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: G4IMultipleScattering.hh,v 1.1 2000/03/20 14:44:03 maire Exp $
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// GEANT4 tag $Name: geant4-03-00 $
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//
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// $Id:
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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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// --------- G4IMultipleScattering physics process --------
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// by Laszlo Urban, October 1997
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// **************************************************************
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// UNIVERSAL: for arbitrary single charged particle
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// 09/12/98: charge can be != +- 1 !!!! L.Urban
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// --------------------------------------------------------------
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// *****************************************************************
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// It is the first implementation of the multiple scattering process
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// using an INTEGRAL APPROACH instead of the differential
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// one used in the standard implementation .
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// *****************************************************************
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// by Laszlo Urban, 23 June 1998
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// -----------------------------------------------------------------
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// 27/10/98: cleanup , L.Urban
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#ifndef G4IMultipleScattering_h
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#define G4IMultipleScattering_h 1
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#include "G4ios.hh"
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#include "g4std/fstream"
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#include "g4std/iomanip"
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#include "globals.hh"
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#include "Randomize.hh"
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#include "G4EnergyLossTables.hh"
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#include "G4Electron.hh"
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#include "G4Positron.hh"
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#include "G4MuonPlus.hh"
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#include "G4Proton.hh"
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#include "G4PhysicsLogVector.hh"
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#include "G4GPILSelection.hh"
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#include "G4VContinuousDiscreteProcess.hh"
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#include "G4Step.hh"
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#include "G4Track.hh"
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#include "G4MaterialTable.hh"
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#include "G4ElementTable.hh"
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#include "G4ElementVector.hh"
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#include "G4VParticleChange.hh"
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class G4IMultipleScattering : public G4VContinuousDiscreteProcess
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{
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public:
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G4IMultipleScattering(const G4String& processName="Imsc") ;
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~G4IMultipleScattering() ;
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G4bool IsApplicable ( const G4ParticleDefinition& ) ;
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void SetPhysicsTableBining(G4double lowE,G4double highE,G4int nBins);
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void BuildPhysicsTable(const G4ParticleDefinition& aParticleType) ;
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void BuildIntegralITable(const G4ParticleDefinition& aParticleType) ;
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void BuildIntegralJTable(const G4ParticleDefinition& aParticleType) ;
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G4double GetIntegralI(const G4ParticleDefinition *aParticle,
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G4double KineticEnergy,G4Material* aMaterial) ;
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G4double GetIntegralJ(const G4ParticleDefinition *aParticle,
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G4double KineticEnergy,G4Material* aMaterial) ;
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void PrintInfoDefinition();
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G4double GetContinuousStepLimit(const G4Track& aTrack,
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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& aTrack,
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G4double previousStepSize,
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G4ForceCondition* condition) ;
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G4VParticleChange* AlongStepDoIt(const G4Track& aTrack,const G4Step& aStep) ;
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G4VParticleChange* PostStepDoIt(const G4Track& aTrack,const G4Step& aStep) ;
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protected:
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G4double ComputeTransportCrossSection(
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const G4ParticleDefinition& aParticleType,
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G4double KineticEnergy,
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G4double AtomicNumber) ;
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G4double TrueToGeomTransformation(const G4DynamicParticle* aParticle,
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G4Material* aMaterial,
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G4double truePathLength) ;
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private:
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// hide assignment operator as private
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G4IMultipleScattering & operator = (const G4IMultipleScattering &right) ;
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G4IMultipleScattering ( const G4IMultipleScattering &) ;
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private:
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// data members ...................................................
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G4PhysicsTable* theTransportMeanFreePathTable;
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G4PhysicsTable* theIntegralITable ;
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G4PhysicsTable* theIntegralJTable ;
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G4double fTransportMeanFreePath ;
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G4double fMeanLateralDisplacement ;
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G4double LowestKineticEnergy ;
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G4double HighestKineticEnergy ;
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G4int TotBin ;
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const G4Electron* theElectron ;
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const G4Positron* thePositron ;
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G4Material* lastMaterial;
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G4double lastKineticEnergy;
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// GeomStepFinal is the geom.steplength at the end of the AlongStep loop
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// the others are some 'cache' variables
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G4double GeomStepFinal ;
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G4double tLast,zLast,CosTheta ;
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G4double biglambda ;
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//parameters for low energy extrapolation of dE/dx and lambda
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const G4double plowloss,plowlambda ;
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G4int NumberOfBuildPhysicsTableCalls ;
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G4double tuning ;
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};
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#include "G4IMultipleScattering.icc"
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#endif
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