Gabriele Cosmo
136 lines
4.7 KiB
C++
136 lines
4.7 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: G4LowEnergyPolarizedCompton.hh,v 1.8 2002/05/31 18:11:45 flongo Exp $
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// GEANT4 tag $Name: geant4-05-00 $
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//
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// ------------------------------------------------------------
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// GEANT 4 class header file
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// CERN Geneva Switzerland
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//
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// --------- G4LowEnergyPolarizedCompton class -----
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//
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// by G.Depaola & F.Longo (21 may 2001)
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// 24 May 2001 - MGP Modified to inherit from G4VDiscreteProcess
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// 25 May 2001 - MGP Added protections to avoid crashes
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//
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// 17 October 2001 - F.Longo Major revision according to design iteration
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//
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// 21 February 2002 - F.Longo Revisions with A.Zoglauer and G.Depaola
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// - better description of parallelism
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// - system of ref change method improved
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//
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//
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// Class description:
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// Low Energy electromagnetic process, Polarised Compton scattering
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// Further documentation available from http://www.ge.infn.it/geant4/lowE
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// ------------------------------------------------------------
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#ifndef G4LOWENERGYPOLARIZEDCOMPTON_H
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#define G4LOWENERGYPOLARIZEDCOMPTON_H 1
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#include "globals.hh"
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#include "G4VDiscreteProcess.hh"
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class G4Track;
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class G4Step;
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class G4ParticleDefinition;
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class G4VParticleChange;
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class G4VEMDataSet;
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class G4VCrossSectionHandler;
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class G4VRangeTest;
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class G4LowEnergyPolarizedCompton : public G4VDiscreteProcess
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{
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public:
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G4LowEnergyPolarizedCompton(const G4String& processName = "polarLowEnCompt");
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~G4LowEnergyPolarizedCompton();
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G4bool IsApplicable(const G4ParticleDefinition& definition);
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void BuildPhysicsTable(const G4ParticleDefinition& photon);
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G4VParticleChange* PostStepDoIt(const G4Track& aTrack, const G4Step& aStep);
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// For testing purpose only
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G4double DumpMeanFreePath(const G4Track& aTrack,
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G4double previousStepSize,
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G4ForceCondition* condition)
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{ return GetMeanFreePath(aTrack, previousStepSize, condition); }
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protected:
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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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private:
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// Hide copy constructor and assignment operator as private
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G4LowEnergyPolarizedCompton& operator=(const G4LowEnergyPolarizedCompton&
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right);
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G4LowEnergyPolarizedCompton(const G4LowEnergyPolarizedCompton& );
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G4double lowEnergyLimit; // low energy limit applied to the process
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G4double highEnergyLimit; // high energy limit applied to the process
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G4VEMDataSet* meanFreePathTable;
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G4VEMDataSet* scatterFunctionData;
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G4VCrossSectionHandler* crossSectionHandler;
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G4VRangeTest* rangeTest;
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const G4double intrinsicLowEnergyLimit; // intrinsic validity range
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const G4double intrinsicHighEnergyLimit;
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// specific methods for polarization
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G4ThreeVector GetRandomPolarization(G4ThreeVector& direction0); // Random Polarization
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G4ThreeVector GetPerpendicularPolarization(const G4ThreeVector& direction0, const G4ThreeVector& polarization0) const;
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G4ThreeVector SetPerpendicularVector(G4ThreeVector& a); // temporary
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G4ThreeVector SetNewPolarization(G4double epsilon, G4double sinSqrTheta,
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G4double phi, G4double cosTheta);
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G4double SetPhi(G4double, G4double);
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void SystemOfRefChange(G4ThreeVector& direction0, G4ThreeVector& direction1,
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G4ThreeVector& polarization0, G4ThreeVector& polarization1);
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};
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#endif
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