HepMCEx02/src/H02Field.cc

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0026 /// \file eventgenerator/HepMC/HepMCEx02/src/H02Field.cc
0027 /// \brief Implementation of the H02Field class
0028 //
0029 //   H02Field.hh
0030 //
0031 #include "H02Field.hh"
0032
0033 #include "G4SystemOfUnits.hh"
0034
0035 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0036 void H02Field::GetFieldValue(const G4double Point[3], G4double* Bfield) const
0037 {
0038   const G4double Bz = 3.0 * tesla;
0039   const G4double rmax_sq = sqr(1. * m);
0040   const G4double zmax = 1. * m;
0041
0042   Bfield[0] = 0.;
0043   Bfield[1] = 0.;
0044   if (std::abs(Point[2]) < zmax && (sqr(Point[0]) + sqr(Point[1])) < rmax_sq) {
0045     Bfield[2] = Bz;
0046   }
0047   else {
0048     Bfield[2] = 0.;
0049   }
0050 }