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26 /// \file exoticphysics/monopole/src/G4Monopol << 26 // $Id: G4MonopoleFieldSetup.cc,v 1.2 2010/11/29 15:14:17 vnivanch Exp $
27 /// \brief Implementation of the G4MonopoleFie << 27 // GEANT4 tag $Name: geant4-09-04 $
28 // <<
29 // 28 //
30 //....oooOO0OOooo........oooOO0OOooo........oo 29 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
31 //....oooOO0OOooo........oooOO0OOooo........oo 30 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
32 // 31 //
33 // 32 //
34 // G4MonopoleFieldSetup is responsible for set 33 // G4MonopoleFieldSetup is responsible for setting up a magnetic field
35 // and the ability to use it with two differen << 34 // and the ability to use it with two different equation of motions,
36 // one for monopoles and another for the rest << 35 // one for monopoles and another for the rest of the particles.
37 // << 36 //
38 // << 37 //
39 38
40 // =========================================== 39 // =======================================================================
41 // Created: 13 May 2010, B. Bozsogi 40 // Created: 13 May 2010, B. Bozsogi
42 // =========================================== 41 // =======================================================================
43 42
44 #include "G4MonopoleFieldSetup.hh" 43 #include "G4MonopoleFieldSetup.hh"
>> 44 #include "G4MonopoleFieldMessenger.hh"
45 45
46 #include "G4ChordFinder.hh" << 46 #include "G4MagneticField.hh"
>> 47 #include "G4UniformMagField.hh"
47 #include "G4FieldManager.hh" 48 #include "G4FieldManager.hh"
48 #include "G4MagIntegratorStepper.hh" << 49 #include "G4TransportationManager.hh"
49 #include "G4Mag_UsualEqRhs.hh" 50 #include "G4Mag_UsualEqRhs.hh"
50 #include "G4MagneticField.hh" <<
51 #include "G4MonopoleEquation.hh" 51 #include "G4MonopoleEquation.hh"
52 #include "G4MonopoleFieldMessenger.hh" << 52 #include "G4MagIntegratorStepper.hh"
53 #include "G4TransportationManager.hh" << 53 #include "G4ChordFinder.hh"
54 #include "G4UniformMagField.hh" <<
55 54
56 // #include "G4ExplicitEuler.hh" 55 // #include "G4ExplicitEuler.hh"
57 // #include "G4ImplicitEuler.hh" 56 // #include "G4ImplicitEuler.hh"
58 // #include "G4SimpleRunge.hh" 57 // #include "G4SimpleRunge.hh"
59 // #include "G4SimpleHeum.hh" 58 // #include "G4SimpleHeum.hh"
60 #include "G4ClassicalRK4.hh" 59 #include "G4ClassicalRK4.hh"
61 // #include "G4HelixExplicitEuler.hh" 60 // #include "G4HelixExplicitEuler.hh"
62 // #include "G4HelixImplicitEuler.hh" 61 // #include "G4HelixImplicitEuler.hh"
63 // #include "G4HelixSimpleRunge.hh" 62 // #include "G4HelixSimpleRunge.hh"
64 // #include "G4CashKarpRKF45.hh" 63 // #include "G4CashKarpRKF45.hh"
65 // #include "G4RKG3_Stepper.hh" 64 // #include "G4RKG3_Stepper.hh"
66 65
67 #include "G4SystemOfUnits.hh" << 66 // #include "G4SIunits.hh"
68 <<
69 // G4MonopoleFieldSetup* G4MonopoleFieldSetup: <<
70 67
71 //....oooOO0OOooo........oooOO0OOooo........oo << 68 G4MonopoleFieldSetup* G4MonopoleFieldSetup::fMonopoleFieldSetup=0;
72 69
>> 70 //////////////////////////////////////////////////////////////////////////
>> 71 //
>> 72 // Constructor
73 G4MonopoleFieldSetup::G4MonopoleFieldSetup() 73 G4MonopoleFieldSetup::G4MonopoleFieldSetup()
74 : fFieldManager(0), <<
75 fChordFinder(0), <<
76 fUsualChordFinder(0), <<
77 fMonopoleChordFinder(0), <<
78 fEquation(0), <<
79 fMonopoleEquation(0), <<
80 fMagneticField(0), <<
81 fStepper(0), <<
82 fMonopoleStepper(0), <<
83 fMinStep(0.0), <<
84 fZmagFieldValue(0.2 * tesla), <<
85 fMonopoleFieldMessenger(0) <<
86 { 74 {
87 fMonopoleFieldMessenger = new G4MonopoleFiel << 75 if (!fMonopoleFieldSetup)
88 fFieldManager = GetGlobalFieldManager(); << 76 {
>> 77 fChordFinder = 0;
>> 78 fStepper = 0;
>> 79 fMagneticField = 0;
>> 80
>> 81 fMonopoleFieldMessenger = new G4MonopoleFieldMessenger(this);
>> 82 }
>> 83 else
>> 84 {
>> 85 G4cerr << "Only ONE instance of G4MonopoleFieldSetup is allowed!"
>> 86 << G4endl;
>> 87 G4Exception("G4MonopoleFieldSetup::G4MonopoleFieldSetup()",
>> 88 "InvalidSetup", FatalException,
>> 89 "Only ONE instance of MagneticFieldSetup is allowed!");
>> 90 }
89 } 91 }
90 92
91 //....oooOO0OOooo........oooOO0OOooo........oo << 93 //////////////////////////////////////////////////////////////////////////
92 << 94 // Retrieve the static instance of the singleton
93 // G4MonopoleFieldSetup* G4MonopoleFieldSetup: << 95 //
94 // { << 96 G4MonopoleFieldSetup* G4MonopoleFieldSetup::GetMonopoleFieldSetup()
95 // if (0 == fMonopoleFieldSetup) <<
96 // { <<
97 // static G4ThreadLocal G4MonopoleFieldSe <<
98 // fMonopoleFieldSetup = &theInstance; <<
99 // } <<
100 <<
101 // return fMonopoleFieldSetup; <<
102 // } <<
103 <<
104 //....oooOO0OOooo........oooOO0OOooo........oo <<
105 <<
106 G4MonopoleFieldSetup::~G4MonopoleFieldSetup() <<
107 { 97 {
108 delete fMonopoleFieldMessenger; << 98 static G4MonopoleFieldSetup theInstance;
109 if (fMagneticField) delete fMagneticField; << 99 if (!fMonopoleFieldSetup)
110 // if(fChordFinder) delete fChordFinder; << 100 {
111 if (fUsualChordFinder) delete fUsualChordFin << 101 fMonopoleFieldSetup = &theInstance;
112 if (fMonopoleChordFinder) delete fMonopoleCh << 102 }
113 if (fStepper) delete fStepper; << 103
114 if (fMonopoleStepper) delete fMonopoleSteppe << 104 return fMonopoleFieldSetup;
115 } 105 }
116 106
117 //....oooOO0OOooo........oooOO0OOooo........oo << 107 ////////////////////////////////////////////////////////////////////////////////
118 108
119 void G4MonopoleFieldSetup::SetZMagFieldValue(G << 109 G4MonopoleFieldSetup::~G4MonopoleFieldSetup()
120 { 110 {
121 // set new magnetic field value and rebuild << 111 delete fMonopoleFieldMessenger;
122 fZmagFieldValue = val; << 112 if(fMagneticField) delete fMagneticField;
123 << 113 if(fChordFinder) delete fChordFinder;
124 ConstructMagField(); << 114 if(fStepper) delete fStepper;
>> 115 if(fMonopoleStepper) delete fMonopoleStepper;
125 } 116 }
126 117
127 //....oooOO0OOooo........oooOO0OOooo........oo << 118 ////////////////////////////////////////////////////////////////////////////////
128 119
129 void G4MonopoleFieldSetup::ConstructMagField() << 120 void G4MonopoleFieldSetup::SetMagField(G4double fieldValue)
130 { 121 {
131 // apply a global uniform magnetic field alo << 122 //apply a global uniform magnetic field along Z axis
132 if (fMagneticField) { << 123 if (fMagneticField) { delete fMagneticField; } //delete the existing magn field
133 delete fMagneticField; <<
134 } // delete the existing magn field <<
135 <<
136 if (fZmagFieldValue != 0.) // create a new <<
137 { <<
138 // G4cout << "Go to create new field ..." <<
139 fMagneticField = new G4UniformMagField(G4T <<
140 InitialiseAll(); <<
141 } <<
142 else { <<
143 // G4cout << "Set field = 0 ..." << G4endl <<
144 fMagneticField = 0; <<
145 } <<
146 124
147 fFieldManager->SetDetectorField(fMagneticFie << 125 if (fieldValue != 0.) // create a new one if non nul
>> 126 {
>> 127 fMagneticField = new G4UniformMagField(G4ThreeVector(0., 0., fieldValue));
>> 128 InitialiseAll();
>> 129 }
>> 130 else
>> 131 {
>> 132 fMagneticField = 0;
>> 133 fFieldManager->SetDetectorField(fMagneticField);
>> 134 }
148 } 135 }
149 136
150 //....oooOO0OOooo........oooOO0OOooo........oo << 137 ////////////////////////////////////////////////////////////////////////////////
151 138
152 void G4MonopoleFieldSetup::InitialiseAll() << 139 void
>> 140 G4MonopoleFieldSetup::InitialiseAll()
153 { 141 {
154 fEquation = new G4Mag_UsualEqRhs(fMagneticFi << 142 fFieldManager = G4TransportationManager::GetTransportationManager()
>> 143 ->GetFieldManager();
>> 144
>> 145 fEquation = new G4Mag_UsualEqRhs(fMagneticField);
155 fMonopoleEquation = new G4MonopoleEquation(f 146 fMonopoleEquation = new G4MonopoleEquation(fMagneticField);
156 << 147
157 fMinStep = 0.01 * mm; // minimal step of 1 << 148 fMinStep = 0.01*mm ; // minimal step of 1 mm is default
158 << 149
159 fMonopoleStepper = new G4ClassicalRK4(fMonop << 150 fMonopoleStepper = new G4ClassicalRK4( fMonopoleEquation, 8 ); // for time information..
160 fStepper = new G4ClassicalRK4(fEquation); << 151 fStepper = new G4ClassicalRK4( fEquation );
161 << 152
162 fUsualChordFinder = new G4ChordFinder(fMagne <<
163 fMonopoleChordFinder = new G4ChordFinder(fMa <<
164 <<
165 SetStepperAndChordFinder(0); 153 SetStepperAndChordFinder(0);
166 } 154 }
167 155
168 //....oooOO0OOooo........oooOO0OOooo........oo << 156 /////////////////////////////////////////////////////////////////////////////
169 << 157 //
>> 158 // Update field
>> 159 //
170 void G4MonopoleFieldSetup::SetStepperAndChordF 160 void G4MonopoleFieldSetup::SetStepperAndChordFinder(G4int val)
171 { 161 {
172 if (fMagneticField) { << 162 if (fMagneticField)
173 fFieldManager->SetDetectorField(fMagneticF << 163 {
174 // if(fChordFinder) delete fChordFinder << 164 fFieldManager->SetDetectorField(fMagneticField );
175 << 165
176 switch (val) { << 166 if(fChordFinder) delete fChordFinder;
177 // case 0: << 167
178 // fChordFinder = new G4ChordF << 168 switch (val)
179 // break; << 169 {
180 // case 1: <<
181 // fChordFinder = new G4ChordF <<
182 // <<
183 // break; <<
184 case 0: 170 case 0:
185 fChordFinder = fUsualChordFinder; << 171 fChordFinder = new G4ChordFinder( fMagneticField, fMinStep, fStepper);
186 break; 172 break;
187 case 1: << 173 case 1:
188 fChordFinder = fMonopoleChordFinder; << 174 fChordFinder = new G4ChordFinder( fMagneticField, fMinStep, fMonopoleStepper);
189 break; 175 break;
190 } << 176 }
191 << 177
192 fFieldManager->SetChordFinder(fChordFinder << 178 fFieldManager->SetChordFinder( fChordFinder );
193 } 179 }
194 } 180 }
195 181
196 //....oooOO0OOooo........oooOO0OOooo........oo << 182 ////////////////////////////////////////////////////////////////////////////////
197 << 183 //
198 G4FieldManager* G4MonopoleFieldSetup::GetGloba << 184 // Utility method
>> 185 G4FieldManager* G4MonopoleFieldSetup::GetGlobalFieldManager()
199 { 186 {
200 return G4TransportationManager::GetTransport << 187 return G4TransportationManager::GetTransportationManager()
>> 188 ->GetFieldManager();
201 } 189 }
202 <<
203 //....oooOO0OOooo........oooOO0OOooo........oo <<
204 190