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// $Id: G4QStoppingPhysics.cc,v 1.5 2010/06/03 16:28:39 gunter Exp $
// GEANT4 tag $Name: geant4-09-04-beta-cand-01 $
//
//---------------------------------------------------------------------------
//
// ClassName:   G4QStoppingPhysics
//
// Author: 11 April 2006 V. Ivanchenko
//
// Modified:
//
//----------------------------------------------------------------------------
//

#include "G4QStoppingPhysics.hh"

#include "G4QCaptureAtRest.hh"

#include "G4ParticleDefinition.hh"
#include "G4ProcessManager.hh"

#include "G4LeptonConstructor.hh"
#include "G4MesonConstructor.hh"
#include "G4BaryonConstructor.hh"
#include "G4MuonMinus.hh"

G4QStoppingPhysics::G4QStoppingPhysics(G4int ver)
  :  G4VPhysicsConstructor("stopping"), verbose(ver), wasActivated(false) ,
     useMuonMinusCaptureAtRest(true)
{
  if(verbose > 1) G4cout << "### G4QStoppingPhysics" << G4endl;
}

G4QStoppingPhysics::G4QStoppingPhysics(const G4String& name, G4int ver,
		G4bool UseMuonMinusCapture)
  :  G4VPhysicsConstructor(name), verbose(ver), wasActivated(false) ,
     useMuonMinusCaptureAtRest(UseMuonMinusCapture)
{
  if(verbose > 1) G4cout << "### G4QStoppingPhysics" << G4endl;
}

G4QStoppingPhysics::~G4QStoppingPhysics()
{
  if(wasActivated) {
    if ( muProcess ) delete muProcess;
    delete hProcess;
  }
}

void G4QStoppingPhysics::ConstructParticle()
{
// G4cout << "G4QStoppingPhysics::ConstructParticle" << G4endl;
  G4LeptonConstructor pLeptonConstructor;
  pLeptonConstructor.ConstructParticle();

  G4MesonConstructor pMesonConstructor;
  pMesonConstructor.ConstructParticle();

  G4BaryonConstructor pBaryonConstructor;
  pBaryonConstructor.ConstructParticle();

}

void G4QStoppingPhysics::ConstructProcess()
{
  if(verbose > 1) G4cout << "### G4QStoppingPhysics::ConstructProcess " 
			  << wasActivated << G4endl;
  if(wasActivated) return;
  wasActivated = true;

  if ( useMuonMinusCaptureAtRest )
  {
     muProcess = new G4MuonMinusCaptureAtRest();
  } else {
     muProcess = 0;
  }   
  hProcess = new G4QCaptureAtRest();

  G4double mThreshold = 130.*MeV;

  // Add Stopping Process
  G4ParticleDefinition* particle=0;
  G4ProcessManager* pmanager=0;

  theParticleIterator->reset();
  while( (*theParticleIterator)() )
  {
    particle = theParticleIterator->value();
    pmanager = particle->GetProcessManager();
    if(particle == G4MuonMinus::MuonMinus()) {
      if ( useMuonMinusCaptureAtRest ) 
      {
	 pmanager->AddRestProcess(muProcess);
         if(verbose > 1)
          G4cout << "### QStoppingPhysics added G4MuonMinusCaptureAtRest for " 
	         << particle->GetParticleName() << G4endl;
      } else {
         pmanager->AddRestProcess(hProcess);
         if(verbose > 1)
          G4cout << "### QStoppingPhysics added G4QCaptureAtRest for " 
	         << particle->GetParticleName() << G4endl;
      }  
    }
    if(particle->GetPDGCharge() < 0.0 && 
       particle->GetPDGMass() > mThreshold &&
       !particle->IsShortLived() &&
       hProcess->IsApplicable(*particle) ) 
    { 
      pmanager->AddRestProcess(hProcess);
      if(verbose > 1)
        G4cout << "### QStoppingPhysics added for " 
	       << particle->GetParticleName() << G4endl;
    }
  }
}