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advanced/amsEcal/src/SteppingAction.cc
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26 // $Id: SteppingAction.cc 83010 2014-07-24 14:53:07Z gcosmo $
27 //
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30 
31 #include "SteppingAction.hh"
32 
33 #include "DetectorConstruction.hh"
34 #include "EventAction.hh"
35 
36 #include "G4Step.hh"
37 
38 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
39 
41 :G4UserSteppingAction(),detector(det),eventAct(evt)
42 {
43  first = true;
45 }
46 
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48 
50 {}
51 
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53 
55 {
56  //some initialisation
57  //
58  if (first) {
63  first = false;
64  }
65 
66  //if no edep, return
67  //
70 
71  //locate point in geometry
72  //
73  G4int iModule = 0;
74  G4int iLayer = 0;
75  G4int iFiber = 0;
76 
78  G4LogicalVolume* lvol = touch1->GetVolume()->GetLogicalVolume();
79 
80  if (lvol == lvol_world) return;
81  else if (lvol == lvol_module) { iModule = touch1->GetCopyNumber(0);}
82  else if (lvol == lvol_layer) { iLayer = touch1->GetCopyNumber(0);
83  iModule = touch1->GetCopyNumber(1);}
84  else if (lvol == lvol_fiber) { iFiber = touch1->GetCopyNumber(0);
85  iLayer = touch1->GetCopyNumber(1);
86  iModule = touch1->GetCopyNumber(2);}
87 
88  // sum edep
89  //
90  eventAct->SumDeStep(iModule, iLayer, iFiber, edep);
91 }
92 
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94 
96 {
97  //Example of Birk attenuation law in organic scintillators.
98  //adapted from Geant3 PHYS337. See MIN 80 (1970) 239-244
99  //
100  G4Material* material = aStep->GetTrack()->GetMaterial();
101  G4double birk1 = material->GetIonisation()->GetBirksConstant();
102  G4double destep = aStep->GetTotalEnergyDeposit();
103  G4double stepl = aStep->GetStepLength();
104  G4double charge = aStep->GetTrack()->GetDefinition()->GetPDGCharge();
105  //
106  G4double response = destep;
107  if (birk1*destep*stepl*charge != 0.)
108  {
109  response = destep/(1. + birk1*destep/stepl);
110  }
111  return response;
112 }
113 
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115 
G4LogicalVolume * GetLogicalVolume() const
G4StepPoint * GetPreStepPoint() const
G4double GetPDGCharge() const
virtual G4VPhysicalVolume * GetVolume(G4int depth=0) const
Definition: G4VTouchable.cc:44
G4ParticleDefinition * GetDefinition() const
const G4TouchableHandle & GetTouchableHandle() const
void SumDeStep(G4int, G4int, G4int, G4double)
double G4double
Definition: G4Types.hh:76
G4double GetStepLength() const
G4Track * GetTrack() const
G4double GetTotalEnergyDeposit() const
Definition: G4Step.hh:76
G4double GetBirksConstant() const
void UserSteppingAction(const G4Step *)
G4Material * GetMaterial() const
G4int GetCopyNumber(G4int depth=0) const
G4double BirksAttenuation(const G4Step *)
Double_t edep
int G4int
Definition: G4Types.hh:78
G4IonisParamMat * GetIonisation() const
Definition: G4Material.hh:227
Simple detector construction with a box volume placed in a world.