G4SpinDecayPhysics.cc

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//
//---------------------------------------------------------------------------
//
// ClassName:   G4SpinDecayPhysics
//
// Author: 2015 P. Gumplinger
//
// Modified:
//
//----------------------------------------------------------------------------
//
#include "G4SpinDecayPhysics.hh"
 
#include "G4ParticleDefinition.hh"
#include "G4ProcessManager.hh"
 
#include "G4ParticleTypes.hh"
#include "G4ParticleTable.hh"
 
#include "G4ProcessTable.hh"
 
#include "G4DecayTable.hh"
#include "G4MuonDecayChannelWithSpin.hh"
#include "G4MuonRadiativeDecayChannelWithSpin.hh"
 
#include "G4EmBuilder.hh"
#include "G4PhysListUtil.hh"
 
// factory
#include "G4PhysicsConstructorFactory.hh"
//
G4_DECLARE_PHYSCONSTR_FACTORY(G4SpinDecayPhysics);
 
G4SpinDecayPhysics::G4SpinDecayPhysics(G4int verb)
  : G4SpinDecayPhysics("SpinDecay", verb)
{
}
 
G4SpinDecayPhysics::G4SpinDecayPhysics(const G4String& name, G4int)
  : G4VPhysicsConstructor(name)
{
  G4PhysListUtil::InitialiseParameters();
}
 
G4SpinDecayPhysics::~G4SpinDecayPhysics()
{
}
 
void G4SpinDecayPhysics::ConstructParticle()
{
  // minimal set of particles for EM physics
  G4EmBuilder::ConstructMinimalEmSet();
 
  G4MuonPlus::MuonPlusDefinition();
  G4MuonMinus::MuonMinusDefinition();
  
  G4DecayTable* MuonPlusDecayTable = new G4DecayTable();
  MuonPlusDecayTable -> Insert(new
                         G4MuonDecayChannelWithSpin("mu+",0.986));
  MuonPlusDecayTable -> Insert(new
                         G4MuonRadiativeDecayChannelWithSpin("mu+",0.014));
  G4MuonPlus::MuonPlusDefinition() -> SetDecayTable(MuonPlusDecayTable);
 
  G4DecayTable* MuonMinusDecayTable = new G4DecayTable();
  MuonMinusDecayTable -> Insert(new
                          G4MuonDecayChannelWithSpin("mu-",0.986));
  MuonMinusDecayTable -> Insert(new
                          G4MuonRadiativeDecayChannelWithSpin("mu-",0.014));
  G4MuonMinus::MuonMinusDefinition() -> SetDecayTable(MuonMinusDecayTable);
}
 
void G4SpinDecayPhysics::ConstructProcess()
{
  G4DecayWithSpin* decayWithSpin = new G4DecayWithSpin();
 
  G4ProcessTable* processTable = G4ProcessTable::GetProcessTable();
 
  G4VProcess* decay;
  decay = processTable->FindProcess("Decay",G4MuonPlus::MuonPlus());
 
  G4ProcessManager* fManager = G4MuonPlus::MuonPlus()->GetProcessManager();
 
  if (fManager) {
    if (decay) fManager->RemoveProcess(decay);
    fManager->AddProcess(decayWithSpin);
    // set ordering for PostStepDoIt and AtRestDoIt
    fManager ->SetProcessOrdering(decayWithSpin, idxPostStep);
    fManager ->SetProcessOrdering(decayWithSpin, idxAtRest);
  }
 
  fManager = G4MuonMinus::MuonMinus()->GetProcessManager();
 
  if (fManager) {
    if (decay) fManager->RemoveProcess(decay);
    fManager->AddProcess(decayWithSpin);
    // set ordering for PostStepDoIt and AtRestDoIt
    fManager ->SetProcessOrdering(decayWithSpin, idxPostStep);
    fManager ->SetProcessOrdering(decayWithSpin, idxAtRest);
  }
 
  G4PionDecayMakeSpin* poldecay = new G4PionDecayMakeSpin();
 
  decay = processTable->FindProcess("Decay",G4PionPlus::PionPlus());
 
  fManager = G4PionPlus::PionPlus()->GetProcessManager();
 
  if (fManager) {
    if (decay) fManager->RemoveProcess(decay);
    fManager->AddProcess(poldecay);
    // set ordering for PostStepDoIt and AtRestDoIt
    fManager ->SetProcessOrdering(poldecay, idxPostStep);
    fManager ->SetProcessOrdering(poldecay, idxAtRest);
  }
 
  decay = processTable->FindProcess("Decay",G4PionMinus::PionMinus());
 
  fManager = G4PionMinus::PionMinus()->GetProcessManager();
 
  if (fManager) {
    if (decay) fManager->RemoveProcess(decay);
    fManager->AddProcess(poldecay);
    // set ordering for PostStepDoIt and AtRestDoIt
    fManager ->SetProcessOrdering(poldecay, idxPostStep);
    fManager ->SetProcessOrdering(poldecay, idxAtRest);
  }
}