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25 // 25 //
26 // G4ParticleChangeForTransport class implemen <<
27 // 26 //
28 // Author: Hisaya Kurashige, 10 May 1998 << 27 // $Id$
29 // ------------------------------------------- << 28 //
>> 29 //
>> 30 // --------------------------------------------------------------
>> 31 // GEANT 4 class implementation file
>> 32 //
>> 33 //
>> 34 //
>> 35 // ------------------------------------------------------------
>> 36 // Implemented for the new scheme 10 May. 1998 H.Kurahige
>> 37 // Correct tratment of fpNextTouchable 12 May. 1998 H.Kurashige
>> 38 // Change to the next volume only if energy>0 19 Jan. 2004 V.Ivanchenko
>> 39 // --------------------------------------------------------------
30 40
31 #include "G4ParticleChangeForTransport.hh" 41 #include "G4ParticleChangeForTransport.hh"
32 #include "G4TouchableHandle.hh" 42 #include "G4TouchableHandle.hh"
33 #include "G4Track.hh" 43 #include "G4Track.hh"
34 #include "G4Step.hh" 44 #include "G4Step.hh"
35 #include "G4TrackFastVector.hh" 45 #include "G4TrackFastVector.hh"
36 #include "G4DynamicParticle.hh" 46 #include "G4DynamicParticle.hh"
37 47
38 // ------------------------------------------- << 48 G4ParticleChangeForTransport::G4ParticleChangeForTransport()
39 G4ParticleChangeForTransport::G4ParticleChange << 49 : G4ParticleChange(), isMomentumChanged(false), theMaterialChange(0),
>> 50 theMaterialCutsCoupleChange(0), theSensitiveDetectorChange(0),
>> 51 fpVectorOfAuxiliaryPointsPointer(0)
>> 52 {
>> 53 if (verboseLevel>2) {
>> 54 G4cout << "G4ParticleChangeForTransport::G4ParticleChangeForTransport() "
>> 55 << G4endl;
>> 56 }
>> 57 }
>> 58
>> 59 G4ParticleChangeForTransport::~G4ParticleChangeForTransport()
>> 60 {
>> 61 if (verboseLevel>2) {
>> 62 G4cout << "G4ParticleChangeForTransport::~G4ParticleChangeForTransport() "
>> 63 << G4endl;
>> 64 }
>> 65 }
>> 66
>> 67 G4ParticleChangeForTransport::
>> 68 G4ParticleChangeForTransport(const G4ParticleChangeForTransport &r)
>> 69 : G4ParticleChange(r),
>> 70 fpVectorOfAuxiliaryPointsPointer(0)
>> 71 {
>> 72 if (verboseLevel>0) {
>> 73 G4cout << "G4ParticleChangeForTransport:: copy constructor is called "
>> 74 << G4endl;
>> 75 }
>> 76 theTouchableHandle = r.theTouchableHandle;
>> 77 isMomentumChanged = r.isMomentumChanged;
>> 78 theMaterialChange = r.theMaterialChange;
>> 79 theMaterialCutsCoupleChange = r.theMaterialCutsCoupleChange;
>> 80 theSensitiveDetectorChange = r.theSensitiveDetectorChange;
>> 81 }
>> 82
>> 83 // assignemnt operator
>> 84 G4ParticleChangeForTransport &
>> 85 G4ParticleChangeForTransport::operator=(const G4ParticleChangeForTransport &r)
40 { 86 {
41 // Disable flag that is enabled in G4VPartic << 87 if (verboseLevel>1) {
42 debugFlag = false; << 88 G4cout << "G4ParticleChangeForTransport:: assignment operator is called "
>> 89 << G4endl;
>> 90 }
>> 91 if (this != &r)
>> 92 {
>> 93 theListOfSecondaries = r.theListOfSecondaries;
>> 94 theSizeOftheListOfSecondaries = r.theSizeOftheListOfSecondaries;
>> 95 theNumberOfSecondaries = r.theNumberOfSecondaries;
>> 96 theStatusChange = r.theStatusChange;
>> 97 theTouchableHandle = r.theTouchableHandle;
>> 98 theMaterialChange = r.theMaterialChange;
>> 99 theMaterialCutsCoupleChange = r.theMaterialCutsCoupleChange;
>> 100 theSensitiveDetectorChange = r.theSensitiveDetectorChange;
>> 101 theMomentumDirectionChange = r.theMomentumDirectionChange;
>> 102 thePolarizationChange = r.thePolarizationChange;
>> 103 thePositionChange = r.thePositionChange;
>> 104 theTimeChange = r.theTimeChange;
>> 105 theEnergyChange = r.theEnergyChange;
>> 106 theVelocityChange = r.theVelocityChange;
>> 107 theTrueStepLength = r.theTrueStepLength;
>> 108 theLocalEnergyDeposit = r.theLocalEnergyDeposit;
>> 109 theSteppingControlFlag = r.theSteppingControlFlag;
>> 110 }
>> 111 return *this;
43 } 112 }
44 113
45 // ------------------------------------------- << 114 //----------------------------------------------------------------
>> 115 // methods for updating G4Step
>> 116 //
>> 117
46 G4Step* G4ParticleChangeForTransport::UpdateSt 118 G4Step* G4ParticleChangeForTransport::UpdateStepForAtRest(G4Step* pStep)
47 { 119 {
48 // Update the G4Step specific attributes << 120 // Nothing happens for AtRestDoIt
>> 121 if (verboseLevel>0) {
>> 122 G4cout << "G4ParticleChangeForTransport::UpdateStepForAtRest() is called"
>> 123 << G4endl;
>> 124 G4cout << " Nothing happens for this method " << G4endl;
>> 125 }
>> 126 // Update the G4Step specific attributes
49 return UpdateStepInfo(pStep); 127 return UpdateStepInfo(pStep);
50 } 128 }
51 129
52 // ------------------------------------------- << 130
53 G4Step* G4ParticleChangeForTransport::UpdateSt 131 G4Step* G4ParticleChangeForTransport::UpdateStepForAlongStep(G4Step* pStep)
54 { 132 {
55 // Smooth curved tajectory representation: l 133 // Smooth curved tajectory representation: let the Step know about
56 // the auxiliary trajectory points (jacek 30 134 // the auxiliary trajectory points (jacek 30/10/2002)
57 pStep->SetPointerToVectorOfAuxiliaryPoints(f 135 pStep->SetPointerToVectorOfAuxiliaryPoints(fpVectorOfAuxiliaryPointsPointer);
58 136
59 // Most of the code assumes that transportat << 137 // copy of G4ParticleChange::UpdateStepForAlongStep
60 // so the pre- and post-step point are still << 138 // i.e. no effect for touchable
>> 139
>> 140 // A physics process always calculates the final state of the
>> 141 // particle relative to the initial state at the beginning
>> 142 // of the Step, i.e., based on information of G4Track (or
>> 143 // equivalently the PreStepPoint).
>> 144 // So, the differences (delta) between these two states have to be
>> 145 // calculated and be accumulated in PostStepPoint.
>> 146
>> 147 // Take note that the return type of GetMomentumChange is a
>> 148 // pointer to G4ThreeVector. Also it is a normalized
>> 149 // momentum vector.
>> 150
61 G4StepPoint* pPreStepPoint = pStep->GetPreS 151 G4StepPoint* pPreStepPoint = pStep->GetPreStepPoint();
62 G4StepPoint* pPostStepPoint = pStep->GetPost 152 G4StepPoint* pPostStepPoint = pStep->GetPostStepPoint();
>> 153 G4Track* aTrack = pStep->GetTrack();
>> 154 G4double mass = aTrack->GetDynamicParticle()->GetMass();
>> 155
>> 156 // uodate kinetic energy
>> 157 // now assume that no energy change in transportation
>> 158 // However it is not true in electric fields
>> 159 // Case for changing energy will be implemented in future
>> 160
63 161
64 // update momentum direction and energy 162 // update momentum direction and energy
65 if(isMomentumChanged) << 163 if (isMomentumChanged) {
66 { << 164 G4double energy;
67 pPostStepPoint->SetMomentumDirection(theMo << 165 energy= pPostStepPoint->GetKineticEnergy()
68 pPostStepPoint->SetKineticEnergy(theEnergy << 166 + (theEnergyChange - pPreStepPoint->GetKineticEnergy());
>> 167
>> 168 // calculate new momentum
>> 169 G4ThreeVector pMomentum = pPostStepPoint->GetMomentum()
>> 170 + ( CalcMomentum(theEnergyChange, theMomentumDirectionChange, mass)
>> 171 - pPreStepPoint->GetMomentum());
>> 172 G4double tMomentum = pMomentum.mag();
>> 173 G4ThreeVector direction(1.0,0.0,0.0);
>> 174 if( tMomentum > 0. ){
>> 175 G4double inv_Momentum= 1.0 / tMomentum;
>> 176 direction= pMomentum * inv_Momentum;
>> 177 }
>> 178 pPostStepPoint->SetMomentumDirection(direction);
>> 179 pPostStepPoint->SetKineticEnergy( energy );
69 } 180 }
70 if(isVelocityChanged) << 181 if (isVelocityChanged) pPostStepPoint->SetVelocity(theVelocityChange);
71 pPostStepPoint->SetVelocity(theVelocityCha << 182
>> 183 // stop case should not occur
>> 184 //pPostStepPoint->SetMomentumDirection(G4ThreeVector(1., 0., 0.));
>> 185
72 186
73 // update polarization 187 // update polarization
74 pPostStepPoint->SetPolarization(thePolarizat << 188 pPostStepPoint->AddPolarization( thePolarizationChange
>> 189 - pPreStepPoint->GetPolarization());
75 190
76 // update position and time 191 // update position and time
77 pPostStepPoint->SetPosition(thePositionChang << 192 pPostStepPoint->AddPosition( thePositionChange
78 pPostStepPoint->AddGlobalTime(theTimeChange << 193 - pPreStepPoint->GetPosition() );
79 pPostStepPoint->AddLocalTime(theTimeChange - << 194 pPostStepPoint->AddGlobalTime( theTimeChange
80 pPostStepPoint->SetProperTime(theProperTimeC << 195 - pPreStepPoint->GetLocalTime());
>> 196 pPostStepPoint->AddLocalTime( theTimeChange
>> 197 - pPreStepPoint->GetLocalTime());
>> 198 pPostStepPoint->AddProperTime( theProperTimeChange
>> 199 - pPreStepPoint->GetProperTime());
81 200
82 #ifdef G4VERBOSE 201 #ifdef G4VERBOSE
83 if(debugFlag) { CheckIt(*theCurrentTrack); } << 202 if (debugFlag) CheckIt(*aTrack);
84 #endif 203 #endif
85 204
86 // Update the G4Step specific attributes << 205 // Update the G4Step specific attributes
87 pStep->SetStepLength( theTrueStepLength ); << 206 //pStep->SetStepLength( theTrueStepLength );
88 pStep->SetControlFlag(theSteppingControlFlag << 207 // pStep->AddTotalEnergyDeposit( theLocalEnergyDeposit );
89 << 208 pStep->SetControlFlag( theSteppingControlFlag );
90 return pStep; 209 return pStep;
>> 210 // return UpdateStepInfo(pStep);
91 } 211 }
92 212
93 // ------------------------------------------- <<
94 G4Step* G4ParticleChangeForTransport::UpdateSt 213 G4Step* G4ParticleChangeForTransport::UpdateStepForPostStep(G4Step* pStep)
95 { 214 {
96 // A physics process always calculates the f 215 // A physics process always calculates the final state of the particle
97 216
98 // Change volume only if some kinetic energy 217 // Change volume only if some kinetic energy remains
99 G4StepPoint* pPostStepPoint = pStep->GetPost 218 G4StepPoint* pPostStepPoint = pStep->GetPostStepPoint();
100 if(pPostStepPoint->GetKineticEnergy() > 0.0) << 219 if(pPostStepPoint->GetKineticEnergy() > 0.0) {
101 { << 220
102 // update next touchable 221 // update next touchable
103 // (touchable can be changed only at PostS 222 // (touchable can be changed only at PostStepDoIt)
104 pPostStepPoint->SetTouchableHandle(theTouc << 223 pPostStepPoint->SetTouchableHandle( theTouchableHandle );
105 224
106 pPostStepPoint->SetMaterial(theMaterialCha << 225 pPostStepPoint->SetMaterial( theMaterialChange );
107 pPostStepPoint->SetMaterialCutsCouple(theM << 226 pPostStepPoint->SetMaterialCutsCouple( theMaterialCutsCoupleChange );
108 pPostStepPoint->SetSensitiveDetector(theSe << 227 pPostStepPoint->SetSensitiveDetector( theSensitiveDetectorChange );
109 } <<
110 if(this->GetFirstStepInVolume()) <<
111 { <<
112 pStep->SetFirstStepFlag(); <<
113 } <<
114 else <<
115 { <<
116 pStep->ClearFirstStepFlag(); <<
117 } 228 }
118 if(this->GetLastStepInVolume()) << 229 if( this->GetLastStepInVolume() ){
119 { <<
120 pStep->SetLastStepFlag(); 230 pStep->SetLastStepFlag();
121 } << 231 }else{
122 else << 232 pStep->ClearLastStepFlag();
123 { <<
124 pStep->ClearLastStepFlag(); <<
125 } 233 }
126 // It used to call base class's method 234 // It used to call base class's method
127 // - but this would copy uninitialised dat 235 // - but this would copy uninitialised data members
128 // return G4ParticleChange::UpdateStepForPos 236 // return G4ParticleChange::UpdateStepForPostStep(pStep);
129 237
130 // Copying what the base class does would in 238 // Copying what the base class does would instead
131 // - also not useful 239 // - also not useful
132 // return G4VParticleChange::UpdateStepInfo( 240 // return G4VParticleChange::UpdateStepInfo(pStep);
133 241
134 return pStep; 242 return pStep;
135 } 243 }
136 244
137 // ------------------------------------------- << 245
>> 246 //----------------------------------------------------------------
>> 247 // methods for printing messages
>> 248 //
>> 249
138 void G4ParticleChangeForTransport::DumpInfo() 250 void G4ParticleChangeForTransport::DumpInfo() const
139 { 251 {
140 // use base-class DumpInfo << 252 // use base-class DumpInfo
141 G4ParticleChange::DumpInfo(); 253 G4ParticleChange::DumpInfo();
142 G4cout << " Touchable (pointer) : " < << 254
143 << theTouchableHandle() << G4endl; << 255 G4int oldprc = G4cout.precision(3);
>> 256 G4cout << " Touchable (pointer) : "
>> 257 << std::setw(20) << theTouchableHandle() << G4endl;
>> 258 G4cout.precision(oldprc);
144 } 259 }
>> 260
145 261