medical_linac/src/SteppingAction.cc

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0024 // ********************************************************************
0025 //
0026 // Code developed by
0027 // Silvia Pozzi (1), silvia.pozzi@iss.it
0028 // Barbara Caccia (1), barbara.caccia@iss.it
0029 // Carlo Mancini Terracciano (2), carlo.mancini.terracciano@roma1.infn.it
0030 // (1) Istituto Superiore di Sanita' and INFN Roma, Italy
0031 // (2) Univ. La Sapienza and INFN Roma, Italy
0032
0033 #include "DetectorConstruction.hh"
0034 #include "SteppingAction.hh"
0035
0036 #include <G4RunManager.hh>
0037 #include <G4Step.hh>
0038 #include <G4SystemOfUnits.hh>
0039
0040 void SteppingAction::UserSteppingAction(const G4Step* aStep)
0041 {
0042   DetectorConstruction* detector = (DetectorConstruction*)
0043     G4RunManager::GetRunManager() -> GetUserDetectorConstruction();
0044
0045   G4double fFilterZ = detector -> GetFFilterZ();
0046   G4double fFilterRadius = detector -> GetFFilterRadius();
0047
0048   G4String particleName;
0049
0050   G4VPhysicalVolume* volume = aStep -> GetPostStepPoint() -> GetTouchable() -> GetVolume();
0051
0052   const G4ThreeVector momentumDir = aStep -> GetTrack()->  GetMomentumDirection();
0053   if (momentumDir.z() < 0)
0054     {
0055         aStep->GetTrack()->SetTrackStatus(fStopAndKill);
0056     }
0057
0058   if ( volume != nullptr )
0059     {
0060       G4String volumeName = volume -> GetName();
0061
0062       if (volumeName == "Jaw1XPV" || volumeName == "Jaw2XPV"
0063       || volumeName == "Jaw1YPV" || volumeName == "Jaw2YPV" )
0064     {
0065       aStep->GetTrack()->SetTrackStatus(fStopAndKill);
0066     }
0067     }
0068
0069   if (aStep -> GetPreStepPoint() -> GetTouchable() -> GetVolume() != nullptr )
0070     {
0071       if (aStep -> GetPreStepPoint() -> GetTouchable() -> GetVolume() -> GetName() == "TargetPV" ||
0072       aStep -> GetPreStepPoint() -> GetTouchable() -> GetVolume() -> GetName() == "PriCollUpperPV" ||
0073       aStep -> GetPreStepPoint() -> GetTouchable() -> GetVolume() -> GetName() == "PriCollMiddlePV" ||
0074       aStep -> GetPreStepPoint() -> GetTouchable() -> GetVolume() -> GetName() == "PriCollLowererPV" ||
0075       aStep -> GetPreStepPoint() -> GetTouchable() -> GetVolume() -> GetName() ==  "ffPV")
0076     {
0077       if (std::abs(momentumDir.getX()/momentumDir.getZ()) > fFilterRadius/fFilterZ ||
0078           std::abs(momentumDir.getY()/momentumDir.getZ()) > fFilterRadius/fFilterZ )
0079         {
0080           aStep->GetTrack()->SetTrackStatus(fStopAndKill);
0081         }
0082     }
0083     }
0084 }