G4ParticleChangeForLoss.cc

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//
//
//
//
// --------------------------------------------------------------
//  GEANT 4 class implementation file
//
// ------------------------------------------------------------
//   Implemented for the new scheme                 23 Mar. 1998  H.Kurahige
// --------------------------------------------------------------
//
//   Modified:
//   16.01.04 V.Ivanchenko update for model variant of energy loss
//   15.04.05 V.Ivanchenko inline update methods
//   28.08.06 V.Ivanchenko Add access to current track and polarizaion
//
// ------------------------------------------------------------
//
#include "G4ParticleChangeForLoss.hh"
#include "G4SystemOfUnits.hh"
#include "G4Track.hh"
#include "G4Step.hh"
#include "G4DynamicParticle.hh"
#include "G4ExceptionSeverity.hh"
//#include "G4VelocityTable.hh"

G4ParticleChangeForLoss::G4ParticleChangeForLoss()
  : G4VParticleChange(), currentTrack(0), proposedKinEnergy(0.),
    lowEnergyLimit(1.0*eV), currentCharge(0.)
{
  theSteppingControlFlag = NormalCondition;
  debugFlag = false;
#ifdef G4VERBOSE
  if (verboseLevel>2) {
    G4cout << "G4ParticleChangeForLoss::G4ParticleChangeForLoss() " << G4endl;
  }
#endif
}

G4ParticleChangeForLoss::~G4ParticleChangeForLoss()
{
#ifdef G4VERBOSE
  if (verboseLevel>2) {
    G4cout << "G4ParticleChangeForLoss::~G4ParticleChangeForLoss() " << G4endl;
  }
#endif
}

G4ParticleChangeForLoss::
G4ParticleChangeForLoss(const G4ParticleChangeForLoss &right)
  : G4VParticleChange(right)
{
  if (verboseLevel>1) {
    G4cout << "G4ParticleChangeForLoss::  copy constructor is called " << G4endl;
  }
  currentTrack = right.currentTrack;
  proposedKinEnergy = right.proposedKinEnergy;
  lowEnergyLimit = right.lowEnergyLimit;
  currentCharge = right.currentCharge;
  proposedMomentumDirection = right.proposedMomentumDirection;
}

// assignment operator
G4ParticleChangeForLoss & G4ParticleChangeForLoss::operator=(
                                   const G4ParticleChangeForLoss &right)
{
#ifdef G4VERBOSE
  if (verboseLevel>1) {
    G4cout << "G4ParticleChangeForLoss:: assignment operator is called " << G4endl;
  }
#endif

  if (this != &right) {
    if (theNumberOfSecondaries>0) {
#ifdef G4VERBOSE
      if (verboseLevel>0) {
  G4cout << "G4ParticleChangeForLoss: assignment operator Warning  ";
  G4cout << "theListOfSecondaries is not empty ";
      }
#endif
       for (G4int index= 0; index<theNumberOfSecondaries; index++){
   if ( (*theListOfSecondaries)[index] ) delete (*theListOfSecondaries)[index] ;
       }
    }
    delete theListOfSecondaries; 
    theListOfSecondaries =  new G4TrackFastVector();
    theNumberOfSecondaries = right.theNumberOfSecondaries;
    for (G4int index = 0; index<theNumberOfSecondaries; index++){
      G4Track* newTrack =  new G4Track(*((*right.theListOfSecondaries)[index] ));
      theListOfSecondaries->SetElement(index, newTrack);          }

    theStatusChange = right.theStatusChange;
    theLocalEnergyDeposit = right.theLocalEnergyDeposit;
    theSteppingControlFlag = right.theSteppingControlFlag;
    theParentWeight = right.theParentWeight;
    isParentWeightProposed = right.isParentWeightProposed;
    fSetSecondaryWeightByProcess = right.fSetSecondaryWeightByProcess;

    currentTrack = right.currentTrack;
    proposedKinEnergy = right.proposedKinEnergy;
    currentCharge = right.currentCharge;
    proposedMomentumDirection = right.proposedMomentumDirection;
  }
  return *this;
}

//----------------------------------------------------------------
// methods for printing messages
//

void G4ParticleChangeForLoss::DumpInfo() const
{
// use base-class DumpInfo
  G4VParticleChange::DumpInfo();

  G4int oldprc = G4cout.precision(3);
  G4cout << "        Charge (eplus)   : "
       << std::setw(20) << currentCharge/eplus
       << G4endl;
  G4cout << "        Kinetic Energy (MeV): "
       << std::setw(20) << proposedKinEnergy/MeV
       << G4endl;
  G4cout << "        Momentum Direct - x : "
       << std::setw(20) << proposedMomentumDirection.x()
       << G4endl;
  G4cout << "        Momentum Direct - y : "
       << std::setw(20) << proposedMomentumDirection.y()
       << G4endl;
  G4cout << "        Momentum Direct - z : "
       << std::setw(20) << proposedMomentumDirection.z()
       << G4endl;
  G4cout.precision(oldprc);
}

G4bool G4ParticleChangeForLoss::CheckIt(const G4Track& aTrack)
{
  G4bool    itsOK = true;
  G4bool    exitWithError = false;

  G4double  accuracy;

  // Energy should not be lager than initial value
  accuracy = ( proposedKinEnergy - aTrack.GetKineticEnergy())/MeV;
  if (accuracy > accuracyForWarning) {
    itsOK = false;
    exitWithError = (accuracy > accuracyForException);
#ifdef G4VERBOSE
    G4cout << "G4ParticleChangeForLoss::CheckIt: ";
    G4cout << "KinEnergy become larger than the initial value!" 
     << "  Difference:  " << accuracy  << "[MeV] " <<G4endl;
    G4cout << aTrack.GetDefinition()->GetParticleName()
     << " E=" << aTrack.GetKineticEnergy()/MeV
     << " pos=" << aTrack.GetPosition().x()/m
     << ", " << aTrack.GetPosition().y()/m
     << ", " << aTrack.GetPosition().z()/m
     <<G4endl;
#endif
  }

  // dump out information of this particle change
#ifdef G4VERBOSE
  if (!itsOK) DumpInfo();
#endif

  // Exit with error
  if (exitWithError) {
    G4Exception("G4ParticleChangeForLoss::CheckIt",
    "TRACK004", EventMustBeAborted,
    "energy was  illegal");
  }

  //correction
  if (!itsOK) {
    proposedKinEnergy = aTrack.GetKineticEnergy();
  }

  itsOK = (itsOK) && G4VParticleChange::CheckIt(aTrack);
  return itsOK;
}

//----------------------------------------------------------------
// methods for updating G4Step
//

G4Step* G4ParticleChangeForLoss::UpdateStepForAlongStep(G4Step* pStep)
{
  G4StepPoint* pPostStepPoint = pStep->GetPostStepPoint();
  G4StepPoint* pPreStepPoint  = pStep->GetPreStepPoint();
  G4Track* pTrack = pStep->GetTrack();

  // accumulate change of the kinetic energy
  G4double preKinEnergy = pPreStepPoint->GetKineticEnergy();
  G4double kinEnergy = pPostStepPoint->GetKineticEnergy() +
    (proposedKinEnergy - preKinEnergy);

  // update kinetic energy and charge
  if (kinEnergy < lowEnergyLimit) {
    theLocalEnergyDeposit += kinEnergy;
    kinEnergy = 0.0;
    pPostStepPoint->SetVelocity(0.0);
  } else {
    pPostStepPoint->SetCharge( currentCharge );
    // calculate velocity
    pTrack->SetKineticEnergy(kinEnergy); 
    pPostStepPoint->SetVelocity(pTrack->CalculateVelocity());
    pTrack->SetKineticEnergy(preKinEnergy); 
  }
  pPostStepPoint->SetKineticEnergy( kinEnergy );

  if (isParentWeightProposed ){
    pPostStepPoint->SetWeight( theParentWeight );
  }

  pStep->AddTotalEnergyDeposit( theLocalEnergyDeposit );
  pStep->AddNonIonizingEnergyDeposit( theNonIonizingEnergyDeposit );
  return pStep;
}

G4Step* G4ParticleChangeForLoss::UpdateStepForPostStep(G4Step* pStep)
{
  G4StepPoint* pPostStepPoint = pStep->GetPostStepPoint();
  G4Track* pTrack = pStep->GetTrack();

  pPostStepPoint->SetCharge( currentCharge );
  pPostStepPoint->SetMomentumDirection( proposedMomentumDirection );
  pPostStepPoint->SetKineticEnergy( proposedKinEnergy );
  pTrack->SetKineticEnergy( proposedKinEnergy );
  if(proposedKinEnergy > 0.0) {
    pPostStepPoint->SetVelocity(pTrack->CalculateVelocity());
  } else {
    pPostStepPoint->SetVelocity(0.0);
  }
  pPostStepPoint->SetPolarization( proposedPolarization );

  if (isParentWeightProposed ){
    pPostStepPoint->SetWeight( theParentWeight );
  }

  pStep->AddTotalEnergyDeposit( theLocalEnergyDeposit );
  pStep->AddNonIonizingEnergyDeposit( theNonIonizingEnergyDeposit );
  return pStep;
}