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"

// factory
#include "G4PhysicsConstructorFactory.hh"
//
G4_DECLARE_PHYSCONSTR_FACTORY(G4SpinDecayPhysics);

G4SpinDecayPhysics::G4SpinDecayPhysics()
  : G4VPhysicsConstructor("SpinDecay"), decayWithSpin(NULL), poldecay(NULL)
{
}

G4SpinDecayPhysics::G4SpinDecayPhysics(const G4String& name)
  : G4VPhysicsConstructor(name), decayWithSpin(NULL), poldecay(NULL)
{
}

G4SpinDecayPhysics::~G4SpinDecayPhysics()
{
  if (decayWithSpin) delete decayWithSpin;
  if (poldecay) delete poldecay;
}

void G4SpinDecayPhysics::ConstructParticle()
{
  G4Gamma::GammaDefinition();
  G4Electron::ElectronDefinition();
  G4Positron::PositronDefinition();

  G4NeutrinoE::NeutrinoEDefinition();
  G4NeutrinoMu::NeutrinoMuDefinition();
  G4AntiNeutrinoE::AntiNeutrinoEDefinition();
  G4AntiNeutrinoMu::AntiNeutrinoMuDefinition();

  G4MuonPlus::MuonPlusDefinition();
  G4MuonMinus::MuonMinusDefinition();

  G4PionPlus::PionPlus();
  G4PionMinus::PionMinus();

  G4GenericIon::GenericIonDefinition();
  
  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()
{
  decayWithSpin = new G4DecayWithSpin();

  G4ProcessTable* processTable = G4ProcessTable::GetProcessTable();

  G4VProcess* decay;
  decay = processTable->FindProcess("Decay",G4MuonPlus::MuonPlus());

  G4ProcessManager* fManager;
  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);
  }

  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);
  }
}