[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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| 26 | // |
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| 27 | // $Id: ExN05PionShowerModel.cc,v 1.19 2007/05/18 14:32:35 mverderi Exp $ |
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| 28 | // GEANT4 tag $Name: $ |
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| 29 | // |
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| 30 | #include "ExN05PionShowerModel.hh" |
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| 31 | #include "ExN05EnergySpot.hh" |
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| 32 | |
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| 33 | #include "Randomize.hh" |
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| 34 | |
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| 35 | #include "G4PionMinus.hh" |
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| 36 | #include "G4PionPlus.hh" |
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| 37 | #include "G4TransportationManager.hh" |
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| 38 | #include "G4VSensitiveDetector.hh" |
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| 39 | #include "G4TouchableHistory.hh" |
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| 40 | |
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| 41 | #include "G4Colour.hh" |
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| 42 | |
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| 43 | ExN05PionShowerModel::ExN05PionShowerModel(G4String modelName, G4Region* envelope) |
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| 44 | : G4VFastSimulationModel(modelName, envelope) |
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| 45 | { |
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| 46 | fFakeStep = new G4Step(); |
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| 47 | fFakePreStepPoint = fFakeStep->GetPreStepPoint(); |
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| 48 | fFakePostStepPoint = fFakeStep->GetPostStepPoint(); |
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| 49 | fTouchableHandle = new G4TouchableHistory(); |
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| 50 | fpNavigator = new G4Navigator(); |
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| 51 | fNaviSetup = false; |
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| 52 | } |
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| 53 | |
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| 54 | ExN05PionShowerModel::ExN05PionShowerModel(G4String modelName) |
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| 55 | : G4VFastSimulationModel(modelName) |
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| 56 | { |
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| 57 | fFakeStep = new G4Step(); |
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| 58 | fFakePreStepPoint = fFakeStep->GetPreStepPoint(); |
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| 59 | fFakePostStepPoint = fFakeStep->GetPostStepPoint(); |
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| 60 | fTouchableHandle = new G4TouchableHistory(); |
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| 61 | fpNavigator = new G4Navigator(); |
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| 62 | fNaviSetup = false; |
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| 63 | } |
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| 64 | |
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| 65 | ExN05PionShowerModel::~ExN05PionShowerModel() |
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| 66 | { |
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| 67 | delete fFakeStep; |
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| 68 | delete fpNavigator; |
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| 69 | } |
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| 70 | |
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| 71 | G4bool ExN05PionShowerModel::IsApplicable(const G4ParticleDefinition& particleType) |
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| 72 | { |
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| 73 | return |
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| 74 | &particleType == G4PionMinus::PionMinusDefinition() || |
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| 75 | &particleType == G4PionPlus::PionPlusDefinition(); |
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| 76 | } |
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| 77 | |
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| 78 | G4bool ExN05PionShowerModel::ModelTrigger(const G4FastTrack&) |
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| 79 | { |
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| 80 | // Applies the parameterisation always: |
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| 81 | // ie as soon as the pion enters the envelope |
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| 82 | return true; |
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| 83 | } |
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| 84 | |
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| 85 | void ExN05PionShowerModel::DoIt(const G4FastTrack& fastTrack, |
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| 86 | G4FastStep& fastStep) |
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| 87 | { |
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| 88 | // G4cout << "ExN05PionShowerModel::DoIt" << G4endl; |
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| 89 | |
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| 90 | // Kill the parameterised particle: |
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| 91 | fastStep.KillPrimaryTrack(); |
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| 92 | fastStep.ProposePrimaryTrackPathLength(0.0); |
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| 93 | fastStep.ProposeTotalEnergyDeposited(fastTrack.GetPrimaryTrack()->GetKineticEnergy()); |
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| 94 | |
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| 95 | // split into "energy spots" energy according to the shower shape: |
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| 96 | Explode(fastTrack); |
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| 97 | |
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| 98 | // and put those energy spots into the crystals: |
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| 99 | BuildDetectorResponse(); |
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| 100 | } |
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| 101 | |
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| 102 | void ExN05PionShowerModel::Explode(const G4FastTrack& fastTrack) |
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| 103 | { |
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| 104 | //----------------------------------------------------- |
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| 105 | // Non-physical shower generated: exp along z and |
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| 106 | // transverse. |
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| 107 | //----------------------------------------------------- |
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| 108 | |
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| 109 | // center of the shower, we put at the middle of the ghost: |
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| 110 | G4ThreeVector showerCenter; |
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| 111 | G4double distOut; |
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| 112 | distOut = fastTrack.GetEnvelopeSolid()-> |
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| 113 | DistanceToOut(fastTrack.GetPrimaryTrackLocalPosition(), |
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| 114 | fastTrack.GetPrimaryTrackLocalDirection()); |
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| 115 | showerCenter = fastTrack.GetPrimaryTrackLocalPosition() + |
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| 116 | (distOut/2.)*fastTrack.GetPrimaryTrackLocalDirection(); |
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| 117 | |
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| 118 | showerCenter = fastTrack.GetInverseAffineTransformation()-> |
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| 119 | TransformPoint(showerCenter); |
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| 120 | |
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| 121 | // axis of the shower, in global reference frame: |
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| 122 | G4ThreeVector xShower, yShower, zShower; |
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| 123 | zShower = fastTrack.GetPrimaryTrack()->GetMomentumDirection(); |
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| 124 | xShower = zShower.orthogonal(); |
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| 125 | yShower = zShower.cross(xShower); |
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| 126 | |
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| 127 | // shoot the energy spots: |
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| 128 | G4double Energy = fastTrack.GetPrimaryTrack()->GetKineticEnergy(); |
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| 129 | G4int nSpot = 50; |
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| 130 | G4double deposit = Energy/double(nSpot); |
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| 131 | ExN05EnergySpot eSpot; |
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| 132 | eSpot.SetEnergy(deposit); |
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| 133 | G4ThreeVector ePoint; |
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| 134 | |
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| 135 | // clear the spot list before use |
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| 136 | feSpotList.clear(); |
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| 137 | |
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| 138 | G4double z, r, phi; |
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| 139 | for (int i = 0; i < nSpot; i++) |
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| 140 | { |
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| 141 | z = G4RandGauss::shoot(0,20*cm); |
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| 142 | r = G4RandGauss::shoot(0,10*cm); |
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| 143 | phi = G4UniformRand()*twopi; |
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| 144 | ePoint = showerCenter + |
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| 145 | z*zShower + |
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| 146 | r*std::cos(phi)*xShower + r*std::sin(phi)*yShower; |
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| 147 | eSpot.SetPosition(ePoint); |
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| 148 | feSpotList.push_back(eSpot); |
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| 149 | } |
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| 150 | } |
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| 151 | |
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| 152 | |
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| 153 | void ExN05PionShowerModel::BuildDetectorResponse() |
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| 154 | { |
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| 155 | // Does the assignation of the energy spots to the sensitive volumes: |
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| 156 | for (size_t i = 0; i < feSpotList.size(); i++) |
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| 157 | { |
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| 158 | // Draw the energy spot: |
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| 159 | G4Colour red(1.,0.,0.); |
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| 160 | feSpotList[i].Draw(&red); |
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| 161 | // feSpotList[i].Print(); |
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| 162 | |
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| 163 | // "converts" the energy spot into the fake |
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| 164 | // G4Step to pass to sensitive detector: |
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| 165 | AssignSpotAndCallHit(feSpotList[i]); |
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| 166 | } |
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| 167 | } |
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| 168 | |
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| 169 | |
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| 170 | void ExN05PionShowerModel::AssignSpotAndCallHit(const ExN05EnergySpot &eSpot) |
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| 171 | { |
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| 172 | // |
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| 173 | // "converts" the energy spot into the fake |
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| 174 | // G4Step to pass to sensitive detector: |
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| 175 | // |
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| 176 | FillFakeStep(eSpot); |
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| 177 | |
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| 178 | // |
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| 179 | // call sensitive part: taken/adapted from the stepping: |
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| 180 | // Send G4Step information to Hit/Dig if the volume is sensitive |
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| 181 | // |
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| 182 | G4VPhysicalVolume* pCurrentVolume = |
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| 183 | fFakeStep->GetPreStepPoint()->GetPhysicalVolume(); |
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| 184 | G4VSensitiveDetector* pSensitive; |
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| 185 | |
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| 186 | if( pCurrentVolume != 0 ) |
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| 187 | { |
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| 188 | pSensitive = pCurrentVolume->GetLogicalVolume()-> |
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| 189 | GetSensitiveDetector(); |
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| 190 | if( pSensitive != 0 ) |
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| 191 | { |
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| 192 | pSensitive->Hit(fFakeStep); |
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| 193 | } |
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| 194 | } |
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| 195 | } |
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| 196 | |
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| 197 | |
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| 198 | void ExN05PionShowerModel::FillFakeStep(const ExN05EnergySpot &eSpot) |
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| 199 | { |
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| 200 | //----------------------------------------------------------- |
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| 201 | // find in which volume the spot is. |
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| 202 | //----------------------------------------------------------- |
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| 203 | if (!fNaviSetup) |
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| 204 | { |
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| 205 | fpNavigator-> |
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| 206 | SetWorldVolume(G4TransportationManager::GetTransportationManager()-> |
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| 207 | GetNavigatorForTracking()->GetWorldVolume()); |
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| 208 | fpNavigator-> |
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| 209 | LocateGlobalPointAndUpdateTouchableHandle(eSpot.GetPosition(), |
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| 210 | G4ThreeVector(0.,0.,0.), |
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| 211 | fTouchableHandle, |
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| 212 | false); |
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| 213 | fNaviSetup = true; |
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| 214 | } |
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| 215 | else |
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| 216 | { |
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| 217 | fpNavigator-> |
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| 218 | LocateGlobalPointAndUpdateTouchableHandle(eSpot.GetPosition(), |
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| 219 | G4ThreeVector(0.,0.,0.), |
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| 220 | fTouchableHandle); |
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| 221 | } |
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| 222 | //-------------------------------------- |
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| 223 | // Fills attribute of the G4Step needed |
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| 224 | // by our sensitive detector: |
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| 225 | //------------------------------------- |
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| 226 | // set touchable volume at PreStepPoint: |
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| 227 | fFakePreStepPoint->SetTouchableHandle(fTouchableHandle); |
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| 228 | // set total energy deposit: |
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| 229 | fFakeStep->SetTotalEnergyDeposit(eSpot.GetEnergy()); |
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| 230 | } |
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