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26 // <<
27 /// \file field/field05/src/F05Field.cc 26 /// \file field/field05/src/F05Field.cc
28 /// \brief Implementation of the F05Field clas 27 /// \brief Implementation of the F05Field class
29 // 28 //
>> 29 //
>> 30 //
>> 31 //
30 32
31 //....oooOO0OOooo........oooOO0OOooo........oo 33 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
32 //....oooOO0OOooo........oooOO0OOooo........oo 34 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
33 35
34 #include "F05Field.hh" 36 #include "F05Field.hh"
35 37
>> 38 #include "G4FieldManager.hh"
>> 39 #include "G4TransportationManager.hh"
>> 40
>> 41 #include "G4EqEMFieldWithSpin.hh"
>> 42 #include "G4ChordFinder.hh"
>> 43 #include "G4PropagatorInField.hh"
>> 44
>> 45 #include "G4MagIntegratorStepper.hh"
>> 46 #include "G4ClassicalRK4.hh"
36 #include "G4SystemOfUnits.hh" 47 #include "G4SystemOfUnits.hh"
37 48
38 //....oooOO0OOooo........oooOO0OOooo........oo 49 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
39 50
40 void F05Field::GetFieldValue(const G4double Po << 51 F05Field::F05Field() : G4ElectroMagneticField()
41 { 52 {
42 // Point[0],Point[1],Point[2] are x-, y-, z- << 53 fEquation = new G4EqEMFieldWithSpin(this);
>> 54
>> 55 G4FieldManager* fieldMgr
>> 56 = G4TransportationManager::GetTransportationManager()->GetFieldManager();
>> 57
>> 58 fieldMgr->SetDetectorField(this);
>> 59
>> 60 fStepper = new G4ClassicalRK4(fEquation,12);
>> 61
>> 62 G4double minStep = 0.01*mm;
>> 63
>> 64 fChordFinder = new G4ChordFinder((G4MagneticField*)this,minStep,fStepper);
>> 65
>> 66 // Set accuracy parameters
>> 67 G4double deltaChord = 3.0*mm;
>> 68 fChordFinder->SetDeltaChord( deltaChord );
>> 69
>> 70 G4double deltaOneStep = 0.01*mm;
>> 71 fieldMgr->SetAccuraciesWithDeltaOneStep(deltaOneStep);
>> 72
>> 73 G4double deltaIntersection = 0.1*mm;
>> 74 fieldMgr->SetDeltaIntersection(deltaIntersection);
43 75
44 const G4double Bz = 0.24 * tesla; << 76 G4TransportationManager* fTransportManager =
45 const G4double Er = 2.113987E+6 * volt / m; << 77 G4TransportationManager::GetTransportationManager();
46 78
47 G4double Ex, Ey; << 79 fieldPropagator = fTransportManager->GetPropagatorInField();
48 80
49 G4double posR = std::sqrt(std::pow(Point[0], << 81 G4double epsMin = 2.5e-7*mm;
>> 82 G4double epsMax = 0.05*mm;
>> 83
>> 84 fieldPropagator->SetMinimumEpsilonStep(epsMin);
>> 85 fieldPropagator->SetMaximumEpsilonStep(epsMax);
>> 86
>> 87 fieldMgr->SetChordFinder(fChordFinder);
>> 88 }
>> 89
>> 90 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
>> 91
>> 92 F05Field::~F05Field()
>> 93 {
>> 94 if (fEquation) delete fEquation;
>> 95 if (fStepper) delete fStepper;
>> 96 if (fChordFinder) delete fChordFinder;
>> 97 }
>> 98
>> 99 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
>> 100
>> 101 void F05Field::GetFieldValue( const G4double Point[3],G4double* Bfield ) const
>> 102 {
>> 103 // Point[0],Point[1],Point[2] are x-, y-, z-cordinates
>> 104
>> 105 const G4double Bz = 0.24*tesla;
>> 106 const G4double Er = 2.113987E+6*volt/m;
>> 107
>> 108 G4double Ex,Ey;
>> 109
>> 110 G4double posR = std::sqrt(std::pow(Point[0],2) + std::pow(Point[1],2));
50 G4double cos_theta, sin_theta; 111 G4double cos_theta, sin_theta;
51 112
52 if (posR > 0) { << 113 if (posR>0){
53 cos_theta = Point[0] / (G4double)posR; << 114 cos_theta = Point[0]/(G4double)posR;
54 sin_theta = Point[1] / (G4double)posR; << 115 sin_theta = Point[1]/(G4double)posR;
55 Ex = -1 * Er * cos_theta; // apply radial << 116 Ex = -1*Er*cos_theta;//apply radial electric field
56 Ey = -1 * Er * sin_theta; << 117 Ey = -1*Er*sin_theta;
57 } << 118 }else{
58 else { << 119 Ex=0;
59 Ex = 0; << 120 Ey=0;
60 Ey = 0; <<
61 } 121 }
62 << 122
63 Bfield[0] = 0; << 123 Bfield[0]=0;
64 Bfield[1] = 0; << 124 Bfield[1]=0;
65 Bfield[2] = Bz; << 125 Bfield[2]=Bz;
66 << 126
67 Bfield[3] = Ex; << 127 Bfield[3]=Ex;
68 Bfield[4] = Ey; << 128 Bfield[4]=Ey;
69 Bfield[5] = 0; << 129 Bfield[5]=0;
70 130
71 return; 131 return;
72 } 132 }
73 133