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