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