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26 //
27 /// \file B2bChamberParameterisation.cc
28 /// \brief Implementation of the B2bChamberParameterisation class
29
30 #include "B2bChamberParameterisation.hh"
31
32 #include "G4SystemOfUnits.hh"
33 #include "G4ThreeVector.hh"
34 #include "G4Tubs.hh"
35 #include "G4VPhysicalVolume.hh"
36
37 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
38
39 B2bChamberParameterisation::B2bChamberParameterisation(G4int noChambers,
40 G4double startZ, // Z of center of first
41 G4double spacingZ, // Z spacing of centers
42 G4double widthChamber,
43 G4double lengthInitial, G4double lengthFinal)
44 : G4VPVParameterisation()
45 {
46 fNoChambers = noChambers;
47 fStartZ = startZ;
48 fHalfWidth = 0.5 * widthChamber;
49 fSpacing = spacingZ;
50 fRmaxFirst = 0.5 * lengthInitial;
51 if (noChambers > 0) {
52 fRmaxIncr = 0.5 * (lengthFinal - lengthInitial) / (noChambers - 1);
53 if (spacingZ < widthChamber) {
54 G4Exception("B2bChamberParameterisation::B2bChamberParameterisation()", "InvalidSetup",
55 FatalException, "Width>Spacing");
56 }
57 }
58 }
59
60 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
61
62 B2bChamberParameterisation::~B2bChamberParameterisation() {}
63
64 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
65
66 void B2bChamberParameterisation::ComputeTransformation(const G4int copyNo,
67 G4VPhysicalVolume* physVol) const
68 {
69 // Note: copyNo will start with zero!
70 G4double Zposition = fStartZ + copyNo * fSpacing;
71 G4ThreeVector origin(0, 0, Zposition);
72 physVol->SetTranslation(origin);
73 physVol->SetRotation(0);
74 }
75
76 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
77
78 void B2bChamberParameterisation::ComputeDimensions(G4Tubs& trackerChamber, const G4int copyNo,
79 const G4VPhysicalVolume*) const
80 {
81 // Note: copyNo will start with zero!
82 G4double rmax = fRmaxFirst + copyNo * fRmaxIncr;
83 trackerChamber.SetInnerRadius(0);
84 trackerChamber.SetOuterRadius(rmax);
85 trackerChamber.SetZHalfLength(fHalfWidth);
86 trackerChamber.SetStartPhiAngle(0. * deg);
87 trackerChamber.SetDeltaPhiAngle(360. * deg);
88 }
89
90 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
91