162 lines
4.8 KiB
C++
162 lines
4.8 KiB
C++
//$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
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// LOW ENERGY MUON SPIN RELAXATION, ROTATION, RADIATION
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//
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// ID : LEMuSRMUONIUM.cc , v 1.3
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// AUTHOR: Taofiq PARAISO
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// DATE : 2006-01-19 16:15
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//$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
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//
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// & &&&&&&&&&& &&&&&&& &&&&&&&&
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// & & && && & &&
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// & & & & & & &&
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// & &&&&&&& & & &&&&&& &&&&&&&&
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// & & & && & & &&
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// & & && & & && && & &
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// &&&&&&&&&& &&&&&&&&&& & &&&&& && &&&&&&& & &&
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// &
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// &
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// &
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// &
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// MUONIUM
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//$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
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#include "LEMuSRMUONIUM.hh"
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#include "G4StepStatus.hh"
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#include "G4Navigator.hh"
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#include "G4TransportationManager.hh"
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#include "Randomize.hh"
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#include "G4ProductionCutsTable.hh"
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#include "meyer.h"
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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using namespace std;
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LEMuSRMUONIUM:: LEMuSRMUONIUM(const G4String& name ,
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G4ProcessType aType )
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: G4VDiscreteProcess(name, aType)
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{}
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LEMuSRMUONIUM:: ~LEMuSRMUONIUM()
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{}
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G4VParticleChange* LEMuSRMUONIUM::PostStepDoIt(
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const G4Track& trackData,
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const G4Step& aStep )
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{
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// Initialize ParticleChange (by setting all its members equal
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// to corresponding members in G4Track)
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fParticleChange.Initialize(trackData);
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G4Track theNewTrack;
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if( CheckCondition(aStep))
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{
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GetDatas(&aStep);
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G4Step theStep;
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PrepareSecondary( trackData);
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fParticleChange.AddSecondary(aSecondary);
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fParticleChange.ProposeTrackStatus(fStopAndKill) ;
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}
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else
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{
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fParticleChange.ProposeTrackStatus(trackData.GetTrackStatus()) ;
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}
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// G4cout<<"MU Formation"<<G4endl;getchar();
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return &fParticleChange;
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}
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G4bool LEMuSRMUONIUM::CheckCondition( const G4Step& aStep)
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{
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G4bool condition=false;
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p_name = aStep.GetTrack()->GetDefinition()->GetParticleName(); // particle name
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if(p_name == "mu+"&&aStep.GetTrack()->GetVolume()->GetLogicalVolume()->GetName()=="lv_CFOIL")
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{
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condition=true;
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}
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return condition;
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}
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G4double LEMuSRMUONIUM:: GetMeanFreePath(const G4Track& ,
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G4double ,
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G4ForceCondition* condition
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)
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{
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*condition = Forced;
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return DBL_MAX;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.....
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void LEMuSRMUONIUM::GetDatas( const G4Step* aStep)
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{
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// Particle generation according to yields
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particleTable=G4ParticleTable::GetParticleTable();
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rnd=G4UniformRand();
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// std::cout<<"rnd : "<<rnd <<std::endl;
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G4double E = aStep->GetTrack()->GetDynamicParticle()
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->GetKineticEnergy()/keV; //LEMuSRPrimaryGeneratorAction::GetPGA()->energy/keV+LEMuSRPrimaryGeneratorAction::GetPGA()->ke_offset/keV;
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Gonin.GetYields(E,105*1000,yvector);
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G4String p_new="Mu";
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// MUON PLUS
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if(p_name=="mu+")
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{
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if(rnd<yvector[0])
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{
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particle = particleTable->FindParticle(p_name) ;
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}
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else
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{
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particle = particleTable->FindParticle(p_new);
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}
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// Set the new dynamic particle
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DP = new G4DynamicParticle(particle,
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aStep->GetTrack()->GetDynamicParticle()
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->GetMomentumDirection(),
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aStep->GetTrack()->GetDynamicParticle()
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->GetKineticEnergy()
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);
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// IMPORTANT : COPY THOSE DATA TO GET THE SAME PARTICLE PROPERTIES!!!!
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// SHOULD BE KEPT WHEN BUILDING A PARTICLE CHANGE
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DP->SetProperTime(aStep->GetTrack()->GetDynamicParticle()->GetProperTime());
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DP->SetPolarization(aStep->GetTrack()->GetDynamicParticle()->GetPolarization().x(),aStep->GetTrack()->GetDynamicParticle()->GetPolarization().y(),aStep->GetTrack()->GetDynamicParticle()->GetPolarization().z());
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DP->SetPreAssignedDecayProperTime(aStep->GetTrack()->GetDynamicParticle()->GetPreAssignedDecayProperTime());
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void LEMuSRMUONIUM::PrepareSecondary(const G4Track& track)
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{
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if(p_name=="mu+")
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{
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aSecondary = new G4Track(DP,track.GetGlobalTime(),track.GetPosition());
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}
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}
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