[807] | 1 | // |
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| 2 | // ******************************************************************** |
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| 3 | // * License and Disclaimer * |
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| 4 | // * * |
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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| 7 | // * conditions of the Geant4 Software License, included in the file * |
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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| 9 | // * include a list of copyright holders. * |
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| 10 | // * * |
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| 11 | // * Neither the authors of this software system, nor their employing * |
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| 12 | // * institutes,nor the agencies providing financial support for this * |
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| 13 | // * work make any representation or warranty, express or implied, * |
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| 14 | // * regarding this software system or assume any liability for its * |
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| 15 | // * use. Please see the license in the file LICENSE and URL above * |
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| 16 | // * for the full disclaimer and the limitation of liability. * |
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| 17 | // * * |
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| 18 | // * This code implementation is the result of the scientific and * |
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| 19 | // * technical work of the GEANT4 collaboration. * |
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| 20 | // * By using, copying, modifying or distributing the software (or * |
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| 21 | // * any work based on the software) you agree to acknowledge its * |
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| 22 | // * use in resulting scientific publications, and indicate your * |
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| 23 | // * acceptance of all terms of the Geant4 Software license. * |
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| 24 | // ******************************************************************** |
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| 25 | // |
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[1230] | 26 | // $Id: SteppingAction.cc,v 1.28 2008/05/29 16:59:27 vnivanch Exp $ |
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| 27 | // GEANT4 tag $Name: geant4-09-03-cand-01 $ |
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[807] | 28 | // |
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| 29 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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| 30 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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| 31 | |
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| 32 | #include "SteppingAction.hh" |
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| 33 | |
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| 34 | #include "DetectorConstruction.hh" |
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| 35 | #include "RunAction.hh" |
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| 36 | #include "EventAction.hh" |
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| 37 | #include "HistoManager.hh" |
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| 38 | |
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| 39 | #include "G4Step.hh" |
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| 40 | #include "G4Positron.hh" |
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| 41 | #include "G4RunManager.hh" |
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| 42 | |
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| 43 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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| 44 | |
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| 45 | SteppingAction::SteppingAction(DetectorConstruction* det, RunAction* run, |
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| 46 | EventAction* evt, HistoManager* hist) |
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| 47 | :G4UserSteppingAction(),detector(det),runAct(run),eventAct(evt), |
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| 48 | histoManager(hist) |
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[1230] | 49 | { } |
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[807] | 50 | |
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| 51 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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| 52 | |
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| 53 | SteppingAction::~SteppingAction() |
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| 54 | {} |
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| 55 | |
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| 56 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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| 57 | |
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| 58 | void SteppingAction::UserSteppingAction(const G4Step* aStep) |
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| 59 | { |
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| 60 | //track informations |
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| 61 | const G4StepPoint* prePoint = aStep->GetPreStepPoint(); |
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| 62 | const G4StepPoint* endPoint = aStep->GetPostStepPoint(); |
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| 63 | const G4ParticleDefinition* particle = aStep->GetTrack()->GetDefinition(); |
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| 64 | |
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| 65 | //if World, return |
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| 66 | // |
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| 67 | G4VPhysicalVolume* volume = prePoint->GetTouchableHandle()->GetVolume(); |
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| 68 | //if sum of absorbers do not fill exactly a layer: check material, not volume. |
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| 69 | G4Material* mat = volume->GetLogicalVolume()->GetMaterial(); |
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| 70 | if (mat == detector->GetWorldMaterial()) return; |
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| 71 | |
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| 72 | //here we are in an absorber. Locate it |
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| 73 | // |
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| 74 | G4int absorNum = prePoint->GetTouchableHandle()->GetCopyNumber(0); |
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| 75 | G4int layerNum = prePoint->GetTouchableHandle()->GetCopyNumber(1); |
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| 76 | |
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| 77 | // collect energy deposit |
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| 78 | G4double edep = aStep->GetTotalEnergyDeposit(); |
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| 79 | |
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| 80 | // collect step length of charged particles |
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| 81 | G4double stepl = 0.; |
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| 82 | if (particle->GetPDGCharge() != 0.) stepl = aStep->GetStepLength(); |
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[1230] | 83 | |
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| 84 | // G4cout << "Nabs= " << absorNum << " edep(keV)= " << edep << G4endl; |
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| 85 | |
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[807] | 86 | // sum up per event |
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| 87 | eventAct->SumEnergy(absorNum,edep,stepl); |
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| 88 | |
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| 89 | //longitudinal profile of edep per absorber |
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[1230] | 90 | if (edep>0.) histoManager->FillHisto(MaxAbsor+absorNum, |
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| 91 | G4double(layerNum+1), edep); |
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[807] | 92 | |
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| 93 | //energy flow |
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| 94 | // |
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| 95 | // unique identificator of layer+absorber |
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| 96 | G4int Idnow = (detector->GetNbOfAbsor())*layerNum + absorNum; |
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| 97 | G4int plane; |
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| 98 | // |
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| 99 | //leaving the absorber ? |
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| 100 | if (endPoint->GetStepStatus() == fGeomBoundary) { |
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| 101 | G4ThreeVector position = endPoint->GetPosition(); |
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| 102 | G4ThreeVector direction = endPoint->GetMomentumDirection(); |
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| 103 | G4double sizeYZ = 0.5*detector->GetCalorSizeYZ(); |
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| 104 | G4double Eflow = endPoint->GetKineticEnergy(); |
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| 105 | if (particle == G4Positron::Positron()) Eflow += 2*electron_mass_c2; |
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| 106 | if ((std::abs(position.y()) >= sizeYZ) || (std::abs(position.z()) >= sizeYZ)) |
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| 107 | runAct->sumLateralEleak(Idnow, Eflow); |
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| 108 | else if (direction.x() >= 0.) runAct->sumEnergyFlow(plane=Idnow+1, Eflow); |
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| 109 | else runAct->sumEnergyFlow(plane=Idnow, -Eflow); |
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| 110 | } |
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| 111 | |
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| 112 | //// example of Birk attenuation |
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[1230] | 113 | ///G4double destep = aStep->GetTotalEnergyDeposit(); |
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| 114 | ///G4double response = BirksAttenuation(aStep); |
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| 115 | ///G4cout << " Destep: " << destep/keV << " keV" |
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| 116 | /// << " response after Birks: " << response/keV << " keV" << G4endl; |
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[807] | 117 | } |
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| 118 | |
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| 119 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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| 120 | |
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[1230] | 121 | G4double SteppingAction::BirksAttenuation(const G4Step* aStep) |
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[807] | 122 | { |
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| 123 | //Example of Birk attenuation law in organic scintillators. |
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| 124 | //adapted from Geant3 PHYS337. See MIN 80 (1970) 239-244 |
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| 125 | // |
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[1230] | 126 | G4Material* material = aStep->GetTrack()->GetMaterial(); |
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| 127 | G4double birk1 = material->GetIonisation()->GetBirksConstant(); |
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[807] | 128 | G4double destep = aStep->GetTotalEnergyDeposit(); |
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[1230] | 129 | G4double stepl = aStep->GetStepLength(); |
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[807] | 130 | G4double charge = aStep->GetTrack()->GetDefinition()->GetPDGCharge(); |
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| 131 | // |
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| 132 | G4double response = destep; |
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[1230] | 133 | if (birk1*destep*stepl*charge != 0.) |
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[807] | 134 | { |
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[1230] | 135 | response = destep/(1. + birk1*destep/stepl); |
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[807] | 136 | } |
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| 137 | return response; |
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| 138 | } |
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| 139 | |
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| 140 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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| 141 | |
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