G4AdjointSteppingAction.cc

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//
// $Id: G4AdjointSteppingAction.cc 75570 2013-11-04 11:41:10Z gcosmo $
//
//      Class Name: G4AdjointSteppingAction
//  Author:         L. Desorgher
//  Organisation:   SpaceIT GmbH
//  Contract:   ESA contract 21435/08/NL/AT
//  Customer:       ESA/ESTEC

#include "G4AdjointSteppingAction.hh"
#include "G4Track.hh"
#include "G4PhysicalVolumeStore.hh"
#include "G4AffineTransform.hh"
#include "G4AdjointCrossSurfChecker.hh"
//

G4AdjointSteppingAction::G4AdjointSteppingAction()
  : ext_sourceEMax(0.), start_event(false),
    did_adj_part_reach_ext_source(false), last_ekin(0.), last_weight(0.),
    prim_weight(0.), last_part_def(0), theUserAdjointSteppingAction(0),
    theUserFwdSteppingAction(0)
{ 
  theG4AdjointCrossSurfChecker = G4AdjointCrossSurfChecker::GetInstance();
}
//
G4AdjointSteppingAction::~G4AdjointSteppingAction()
{;}

//
void G4AdjointSteppingAction::UserSteppingAction(const G4Step* aStep)
{
  G4Track* aTrack =aStep->GetTrack();
  //forward tracking mode
   if(!is_adjoint_tracking_mode){
     //check if last adjoint did reach the external source
     if (!did_adj_part_reach_ext_source) {
        aTrack->SetTrackStatus(fStopAndKill);
        return;
     }
     if(theUserFwdSteppingAction)
       theUserFwdSteppingAction->UserSteppingAction(aStep);
     return;
   }


  //Apply first the user adjoint stepping action
  //---------------------------
  if (theUserAdjointSteppingAction) theUserAdjointSteppingAction->UserSteppingAction(aStep);


  G4double nb_nuc=1.;
  G4ParticleDefinition* thePartDef = aTrack->GetDefinition();
 
  if (thePartDef->GetParticleType() == "adjoint_nucleus"){
    nb_nuc=double(thePartDef->GetBaryonNumber());
  }
  //Kill conditions for adjoint particles reaching the maximum energy
  //-----------------------------------------------------------------
  if(aTrack->GetKineticEnergy() >= ext_sourceEMax*nb_nuc){
    aTrack->SetTrackStatus(fStopAndKill);
    did_adj_part_reach_ext_source=false;
    return;
  }

  G4double weight_factor = aTrack->GetWeight()/prim_weight;
  if ( (weight_factor>0 && weight_factor<=0) || weight_factor<= 1e-290 || weight_factor>1.e200)
  {
    //std::cout<<"Weight_factor problem! Value = "<<weight_factor<<std::endl;
    aTrack->SetTrackStatus(fStopAndKill);
    did_adj_part_reach_ext_source=false;
    return; 
  }
  
  
  //Kill conditions for surface crossing
  //--------------------------------------
  
  G4String surface_name;
  G4double cos_to_surface;
  G4bool GoingIn;
  G4ThreeVector crossing_pos;
  if (theG4AdjointCrossSurfChecker->CrossingOneOfTheRegisteredSurface(aStep, surface_name, crossing_pos, cos_to_surface, GoingIn) ){
    
    //G4cout<<"Test_step11"<<std::endl;
    if (surface_name == "ExternalSource") {
        //Registering still needed
        did_adj_part_reach_ext_source=true;
        aTrack->SetTrackStatus(fStopAndKill);
        //now register the adjoint particles reaching the external surface
        last_momentum =aTrack->GetMomentum();
        last_ekin=aTrack->GetKineticEnergy();
        last_weight = aTrack->GetWeight();
        last_part_def = aTrack->GetDefinition();
        last_pos = crossing_pos;
            return;
    }   
    else if (surface_name == "AdjointSource" && GoingIn) {
        did_adj_part_reach_ext_source=false;
        aTrack->SetTrackStatus(fStopAndKill);
        return;
    }  
  }
  //Check for reaching out of world
  if (aStep->GetPostStepPoint()->GetStepStatus() == fWorldBoundary) {
      did_adj_part_reach_ext_source=true;
      last_momentum =aTrack->GetMomentum();
      last_ekin=aTrack->GetKineticEnergy();
      last_weight = aTrack->GetWeight();
      last_part_def = aTrack->GetDefinition();
      last_pos = crossing_pos;
        return;

  }
  
}