Geant4 Cross Reference |
1 // 1 2 // ******************************************* 3 // * License and Disclaimer 4 // * 5 // * The Geant4 software is copyright of th 6 // * the Geant4 Collaboration. It is provided 7 // * conditions of the Geant4 Software License 8 // * LICENSE and available at http://cern.ch/ 9 // * include a list of copyright holders. 10 // * 11 // * Neither the authors of this software syst 12 // * institutes,nor the agencies providing fin 13 // * work make any representation or warran 14 // * regarding this software system or assum 15 // * use. Please see the license in the file 16 // * for the full disclaimer and the limitatio 17 // * 18 // * This code implementation is the result 19 // * technical work of the GEANT4 collaboratio 20 // * By using, copying, modifying or distri 21 // * any work based on the software) you ag 22 // * use in resulting scientific publicati 23 // * acceptance of all terms of the Geant4 Sof 24 // ******************************************* 25 // 26 /// \file SteppingAction.cc 27 /// \brief Implementation of the SteppingActio 28 // 29 // 30 //....oooOO0OOooo........oooOO0OOooo........oo 31 //....oooOO0OOooo........oooOO0OOooo........oo 32 33 #include "SteppingAction.hh" 34 35 #include "DetectorConstruction.hh" 36 #include "EventAction.hh" 37 #include "HistoManager.hh" 38 #include "Run.hh" 39 40 #include "G4RunManager.hh" 41 42 //....oooOO0OOooo........oooOO0OOooo........oo 43 44 SteppingAction::SteppingAction(DetectorConstru 45 : fDetector(det), fEventAct(evt) 46 {} 47 48 //....oooOO0OOooo........oooOO0OOooo........oo 49 50 void SteppingAction::UserSteppingAction(const 51 { 52 // count processes 53 // 54 const G4StepPoint* prePoint = aStep->GetPreS 55 const G4StepPoint* endPoint = aStep->GetPost 56 const G4VProcess* process = endPoint->GetPro 57 Run* run = static_cast<Run*>(G4RunManager::G 58 run->CountProcesses(process); 59 60 // if World, return 61 // 62 G4VPhysicalVolume* volume = prePoint->GetTou 63 // if sum of absorbers do not fill exactly a 64 const G4Material* mat = volume->GetLogicalVo 65 if (mat == fDetector->GetWorldMaterial()) re 66 67 const G4ParticleDefinition* particle = aStep 68 69 // here we are in an absorber. Locate it 70 // 71 G4int absorNum = prePoint->GetTouchableHandl 72 G4int layerNum = prePoint->GetTouchableHandl 73 74 // collect energy deposit (taking into accou 75 G4double edep = aStep->GetTotalEnergyDeposit 76 ////edep *= (aStep->GetTrack()->GetWeight()) 77 78 // collect step length of charged particles 79 G4double stepl = 0.; 80 if (particle->GetPDGCharge() != 0.) stepl = 81 82 // sum up per event 83 fEventAct->SumEnergy(absorNum, edep, stepl); 84 85 // longitudinal profile of edep per absorber 86 if (edep > 0.) { 87 G4AnalysisManager::Instance()->FillH1(kMax 88 } 89 90 // energy flow 91 // 92 // unique identificator of layer+absorber 93 G4int Idnow = (fDetector->GetNbOfAbsor()) * 94 G4int plane; 95 // 96 // leaving the absorber ? 97 if (endPoint->GetStepStatus() == fGeomBounda 98 G4ThreeVector position = endPoint->GetPosi 99 G4ThreeVector direction = endPoint->GetMom 100 G4double Eflow = endPoint->GetKineticEnerg 101 if (direction.x() >= 0.) 102 run->SumEnergyFlow(plane = Idnow + 1, Ef 103 else 104 run->SumEnergyFlow(plane = Idnow, -Eflow 105 } 106 107 //// example of Birk attenuation 108 /// G4double destep = aStep->GetTotalEnerg 109 /// G4double response = BirksAttenuation(aSt 110 /// G4cout << " Destep: " << destep/keV << " 111 /// << " response after Birks: " << re 112 } 113 114 //....oooOO0OOooo........oooOO0OOooo........oo 115 116 G4double SteppingAction::BirksAttenuation(cons 117 { 118 // Example of Birk attenuation law in organi 119 // adapted from Geant3 PHYS337. See MIN 80 ( 120 // 121 const G4Material* material = aStep->GetTrack 122 G4double birk1 = material->GetIonisation()-> 123 G4double destep = aStep->GetTotalEnergyDepos 124 G4double stepl = aStep->GetStepLength(); 125 G4double charge = aStep->GetTrack()->GetDefi 126 // 127 G4double response = destep; 128 if (birk1 * destep * stepl * charge != 0.) { 129 response = destep / (1. + birk1 * destep / 130 } 131 return response; 132 } 133 134 //....oooOO0OOooo........oooOO0OOooo........oo 135