Gabriele Cosmo
214 lines
6.6 KiB
C++
214 lines
6.6 KiB
C++
// This code implementation is the intellectual property of
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// the RD44 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: G4VRestDiscreteProcess.hh,v 1.2 1999/04/13 09:45:16 kurasige Exp $
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// GEANT4 tag $Name: geant4-00-01 $
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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, CN Division, ASD group
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// ------------------------------------------------------------
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// New Physics scheme 8 Mar. 1997 H.Kurahige
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// ------------------------------------------------------------
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// modified 26 Mar. 1997 H.Kurahige
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// modified 16 Apr. 1997 L.Urban
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// modified 16 Dec. 1997 L.Urban
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// modified for new ParticleChange 12 Mar. 1998 H.Kurashige
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#ifndef G4VRestDiscreteProcess_h
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#define G4VRestDiscreteProcess_h 1
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#include "globals.hh"
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#include "G4ios.hh"
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#include "G4VProcess.hh"
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class G4VRestDiscreteProcess : public G4VProcess
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{
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// Abstract class which defines the public behavior of
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// rest + discrete physics interactions.
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public:
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G4VRestDiscreteProcess(const G4String& ,
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G4ProcessType aType = fNotDefined );
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G4VRestDiscreteProcess(G4VRestDiscreteProcess &);
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virtual ~G4VRestDiscreteProcess();
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virtual G4double PostStepGetPhysicalInteractionLength(
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const G4Track& track,
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G4double previousStepSize,
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G4ForceCondition* condition
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);
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virtual G4VParticleChange* PostStepDoIt(
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const G4Track& ,
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const G4Step&
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);
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virtual G4double AtRestGetPhysicalInteractionLength(
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const G4Track& ,
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G4ForceCondition*
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);
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virtual G4VParticleChange* AtRestDoIt(
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const G4Track& ,
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const G4Step&
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);
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// no operation in AlongStepDoIt
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virtual G4double AlongStepGetPhysicalInteractionLength(
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const G4Track&,
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G4double ,
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G4double ,
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G4double& ,
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G4GPILSelection*
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){ return -1.0; };
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// no operation in AlongStepDoIt
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virtual G4VParticleChange* AlongStepDoIt(
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const G4Track& ,
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const G4Step&
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) {return 0;};
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protected:
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virtual G4double GetMeanFreePath(const G4Track& aTrack,
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G4double previousStepSize,
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G4ForceCondition* condition
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)=0;
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// Calculates from the macroscopic cross section a mean
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// free path, the value is returned in units of distance.
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virtual G4double GetMeanLifeTime(const G4Track& aTrack,G4ForceCondition* condition)=0;
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// Calculates the mean life-time (i.e. for decays) of the
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// particle at rest due to the occurence of the given process,
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// or converts the probability of interaction (i.e. for
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// annihilation) into the life-time of the particle for the
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// occurence of the given process.
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private:
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// hide default constructor and assignment operator as private
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G4VRestDiscreteProcess();
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G4VRestDiscreteProcess & operator=(const G4VRestDiscreteProcess &right);
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};
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// -----------------------------------------
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// inlined function members implementation
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// -----------------------------------------
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#include "Randomize.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 "G4VParticleChange.hh"
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inline
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G4double G4VRestDiscreteProcess::PostStepGetPhysicalInteractionLength(
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const G4Track& track,
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G4double previousStepSize,
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G4ForceCondition* condition
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)
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{
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if ( (previousStepSize <=0.0) || (theNumberOfInteractionLengthLeft<=0.0)) {
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// beggining of tracking (or just after DoIt of this process)
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ResetNumberOfInteractionLengthLeft();
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} else {
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// subtract NumberOfInteractionLengthLeft
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SubtractNumberOfInteractionLengthLeft(previousStepSize);
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if(theNumberOfInteractionLengthLeft<perMillion)
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theNumberOfInteractionLengthLeft=0.;
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}
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// condition is set to "Not Forced"
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*condition = NotForced;
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// get mean free path
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currentInteractionLength = GetMeanFreePath(track, previousStepSize, condition);
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#ifdef G4VERBOSE
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if ((currentInteractionLength <=0.0) || (verboseLevel>2)){
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G4cout << "G4VRestDiscreteProcess::PostStepGetPhysicalInteractionLength ";
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G4cout << "[ " << GetProcessName() << "]" <<endl;
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track.GetDynamicParticle()->DumpInfo();
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G4cout << " in Material " << track.GetMaterial()->GetName() <<endl;
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G4cout << "MeanFreePath = " << currentInteractionLength/cm << "[cm]" <<endl;
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}
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#endif
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G4double value = theNumberOfInteractionLengthLeft * currentInteractionLength;
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#ifdef G4VERBOSE
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if (verboseLevel>1){
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G4cout << "G4VRestDiscreteProcess::PostStepGetPhysicalInteractionLength ";
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G4cout << "[ " << GetProcessName() << "]" <<endl;
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track.GetDynamicParticle()->DumpInfo();
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G4cout << " in Material " << track.GetMaterial()->GetName() <<endl;
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G4cout << "InteractionLength= " << value/cm <<"[cm] " <<endl;
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}
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#endif
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return value;
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}
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inline G4VParticleChange* G4VRestDiscreteProcess::PostStepDoIt(
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const G4Track& ,
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const G4Step&
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)
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{
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// reset NumberOfInteractionLengthLeft
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ClearNumberOfInteractionLengthLeft();
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return pParticleChange;
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}
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inline G4double G4VRestDiscreteProcess::AtRestGetPhysicalInteractionLength(
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const G4Track& track,
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G4ForceCondition* condition
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)
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{
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// beggining of tracking
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ResetNumberOfInteractionLengthLeft();
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// condition is set to "Not Forced"
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*condition = NotForced;
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// get mean life time
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currentInteractionLength = GetMeanLifeTime(track, condition);
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#ifdef G4VERBOSE
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if ((currentInteractionLength <0.0) || (verboseLevel>2)){
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G4cout << "G4VRestDiscreteProcess::AtRestGetPhysicalInteractionLength ";
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G4cout << "[ " << GetProcessName() << "]" <<endl;
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track.GetDynamicParticle()->DumpInfo();
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G4cout << " in Material " << track.GetMaterial()->GetName() <<endl;
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G4cout << "MeanLifeTime = " << currentInteractionLength/ns << "[ns]" <<endl;
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}
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#endif
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return theNumberOfInteractionLengthLeft * currentInteractionLength;
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}
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inline G4VParticleChange* G4VRestDiscreteProcess::AtRestDoIt(
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const G4Track&,
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const G4Step&
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)
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{
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// clear NumberOfInteractionLengthLeft
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ClearNumberOfInteractionLengthLeft();
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return pParticleChange;
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}
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#endif
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