field04/src/F04SimpleSolenoid.cc

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0025 //
0026 /// \file F04SimpleSolenoid.cc
0027 /// \brief Implementation of the F04SimpleSolenoid class
0028
0029 #include "F04SimpleSolenoid.hh"
0030
0031 #include "F04GlobalField.hh"
0032
0033 #include "G4GeometryManager.hh"
0034 #include "globals.hh"
0035
0036 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0037
0038 F04SimpleSolenoid::F04SimpleSolenoid(G4double Bz, G4double fz, G4LogicalVolume* lv, G4ThreeVector c)
0039   : F04ElementField(c, lv),
0040     fBfield(Bz),
0041     fFringeZ(fz),
0042     fFieldLength(2. * ((G4Tubs*)fVolume->GetSolid())->GetZHalfLength() + fFringeZ),
0043     fFieldRadius(((G4Tubs*)fVolume->GetSolid())->GetOuterRadius())
0044 {}
0045
0046 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0047
0048 void F04SimpleSolenoid::AddFieldValue(const G4double point[4], G4double field[6]) const
0049 {
0050   G4ThreeVector global(point[0], point[1], point[2]);
0051   G4ThreeVector local;
0052
0053   local = fGlobal2local.TransformPoint(global);
0054
0055   if (IsOutside(local)) return;
0056
0057   G4ThreeVector B(0.0, 0.0, fBfield);
0058
0059   B = fGlobal2local.Inverse().TransformAxis(B);
0060
0061   field[0] += B[0];
0062   field[1] += B[1];
0063   field[2] += B[2];
0064 }
0065
0066 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0067
0068 G4bool F04SimpleSolenoid::IsOutside(G4ThreeVector& local) const
0069 {
0070   //  EInside inside = tubs->Inside(local);
0071   //  return (inside == kOutside);
0072   G4double r = std::sqrt(local.x() * local.x() + local.y() * local.y());
0073   return (r > fFieldRadius || std::fabs(local.z()) > fFieldLength / 2.0);
0074 }
0075
0076 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0077
0078 G4bool F04SimpleSolenoid::IsWithin(G4ThreeVector& local) const
0079 {
0080   //  EInside inside = tubs->Inside(local);
0081   //  return (inside == kInside);
0082   G4double r = std::sqrt(local.x() * local.x() + local.y() * local.y());
0083   return (r < fFieldRadius && std::fabs(local.z()) < fFieldLength / 2.0);
0084 }