RE01/src/RE01Field.cc

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0025 //
0026 /// \file runAndEvent/RE01/src/RE01Field.cc
0027 /// \brief Implementation of the RE01Field class
0028 //
0029 //
0030
0031 #include "RE01Field.hh"
0032
0033 #include "G4SystemOfUnits.hh"
0034
0035 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0036 RE01Field::RE01Field() : G4MagneticField()
0037 {
0038   fBz = 3.0 * tesla;
0039   fRmax_sq = sqr(50. * cm);
0040   fZmax = 100. * cm;
0041 }
0042
0043 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0044 RE01Field::~RE01Field()
0045 {
0046   ;
0047 }
0048
0049 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0050 void RE01Field::GetFieldValue(const double point[3], double* bfield) const
0051 {
0052   bfield[0] = 0.;
0053   bfield[1] = 0.;
0054   if (std::abs(point[2]) < fZmax && (sqr(point[0]) + sqr(point[1])) < fRmax_sq) {
0055     bfield[2] = fBz;
0056   }
0057   else {
0058     bfield[2] = 0.;
0059   }
0060 }