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1 // 1 //
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25 // 22 //
26 // G4FieldTrack implementation <<
27 // 23 //
28 // Author: John Apostolakis, CERN - First vers << 24 // $Id: G4FieldTrack.cc,v 1.4 2001/07/11 09:59:11 gunter Exp $
29 // ------------------------------------------- << 25 // GEANT4 tag $Name: geant4-04-01 $
30 << 26 //
31 #include "G4FieldTrack.hh" 27 #include "G4FieldTrack.hh"
32 28
33 std::ostream& operator<<( std::ostream& os, co << 29 G4std::ostream& operator<<( G4std::ostream& os, G4FieldTrack& SixVec)
34 { 30 {
35 const G4double* SixV = SixVec.SixVector; << 31 G4double *SixV = SixVec.SixVector;
36 const G4int precPos= 9; // For position << 32 os << " X= " << SixV[0] << " " << SixV[1] << " " << SixV[2] << " ";
37 const G4int precEp= 9; // For Energy / << 33 os << " V= " << SixV[3] << " " << SixV[4] << " " << SixV[5] << " ";
38 const G4int precLen= 12; // For Length a <<
39 const G4int precSpin= 9; // For polarisa <<
40 const G4int precTime= 6; // For time of <<
41 const G4long oldpr= os.precision(precPos) <<
42 os << " ( "; <<
43 os << " X= " << SixV[0] << " " << SixV[1] <<
44 << SixV[2] << " "; // Posit <<
45 os.precision(precEp); <<
46 os << " P= " << SixV[3] << " " << SixV[4] <<
47 << SixV[5] << " "; // Momen <<
48 os << " Pmag= " <<
49 << G4ThreeVector(SixV[3], SixV[4], Six <<
50 os << " Ekin= " << SixVec.fKineticEnergy <<
51 os.precision(precLen); <<
52 os << " l= " << SixVec.GetCurveLength(); 34 os << " l= " << SixVec.GetCurveLength();
53 os.precision(6); <<
54 os << " m0= " << SixVec.fRestMass_c2; <<
55 os << " (Pdir-1)= " << SixVec.fMomentumD <<
56 if( SixVec.fLabTimeOfFlight > 0.0 ) <<
57 { <<
58 os.precision(precTime); <<
59 } <<
60 else <<
61 { <<
62 os.precision(3); <<
63 } <<
64 os << " t_lab= " << SixVec.fLabTimeOfF <<
65 os << " t_proper= " << SixVec.fProperTime <<
66 G4ThreeVector pol= SixVec.GetPolarization <<
67 if( pol.mag2() > 0.0 ) <<
68 { <<
69 os.precision(precSpin); <<
70 os << " PolV= " << pol; // SixVec.GetP <<
71 } <<
72 else <<
73 { <<
74 os << " PolV= (0,0,0) "; <<
75 } <<
76 os << " ) "; <<
77 os.precision(oldpr); <<
78 return os; 35 return os;
79 } <<
80 <<
81 G4FieldTrack::G4FieldTrack( const G4ThreeVecto <<
82 G4double LaboratoryTimeO <<
83 const G4ThreeVector& pMomentumDirect <<
84 G4double kineticEnergy, <<
85 G4double restMass_c2, <<
86 G4double charge, <<
87 const G4ThreeVector& vecPolarization <<
88 G4double magnetic_dipole <<
89 G4double <<
90 G4double <<
91 : fDistanceAlongCurve(curve_length), <<
92 fKineticEnergy(kineticEnergy), <<
93 fRestMass_c2(restMass_c2), <<
94 fLabTimeOfFlight(LaboratoryTimeOfFlight), <<
95 fProperTimeOfFlight(0.), <<
96 // fMomentumDir(pMomentumDirection), <<
97 fChargeState( charge, magnetic_dipole_mome <<
98 // fChargeState( charge, magnetic_dipole_m <<
99 // fPDGSpin( pdgSpin ) <<
100 { <<
101 UpdateFourMomentum( kineticEnergy, pMomentum <<
102 // Sets momentum direction as well. <<
103 <<
104 SetPosition( pPosition ); <<
105 SetPolarization( vecPolarization ); <<
106 } <<
107 <<
108 G4FieldTrack::G4FieldTrack( const G4ThreeVecto <<
109 const G4ThreeVecto <<
110 G4double <<
111 G4double <<
112 const G4double <<
113 G4double, <<
114 G4double <<
115 G4double <<
116 const G4ThreeVecto <<
117 G4double <<
118 : fDistanceAlongCurve(curve_length), <<
119 fKineticEnergy(kineticEnergy), <<
120 fRestMass_c2(restMass_c2), <<
121 fLabTimeOfFlight(pLaboratoryTimeOfFlight), <<
122 fProperTimeOfFlight(pProperTimeOfFlight), <<
123 fChargeState( DBL_MAX, DBL_MAX, -1.0 ) // <<
124 { <<
125 UpdateFourMomentum( kineticEnergy, pMomentum <<
126 // Sets momentum direction as well. <<
127 <<
128 SetPosition( pPosition ); <<
129 fChargeState.SetPDGSpin( pdgSpin ); <<
130 <<
131 G4ThreeVector PolarVec(0.0, 0.0, 0.0); <<
132 if( pPolarization != nullptr ) { PolarVec= <<
133 SetPolarization( PolarVec ); <<
134 } <<
135 <<
136 G4FieldTrack::G4FieldTrack( char ) <<
137 : fKineticEnergy(0.), fRestMass_c2(0.), fLab <<
138 fProperTimeOfFlight(0.), fChargeState( DBL <<
139 { <<
140 G4ThreeVector Zero(0.0, 0.0, 0.0); <<
141 SetCurvePnt( Zero, Zero, 0.0 ); <<
142 SetPolarization( Zero ); <<
143 // fInitialMomentumMag = 0.00; // Invalid <<
144 // fLastMomentumMag = 0.0; <<
145 } <<
146 <<
147 void G4FieldTrack:: <<
148 SetChargeAndMoments(G4double charge, <<
149 G4double magnetic_dipole_moment, // def <<
150 G4double electric_dipole_moment, // dit <<
151 G4double magnetic_charge ) // dit <<
152 { <<
153 fChargeState.SetChargesAndMoments( charge, <<
154 magnetic_ <<
155 electric_ <<
156 magnetic_ <<
157 <<
158 // NOTE: Leaves Spin unchanged ! <<
159 // <<
160 // G4double pdgSpin= fChargeState.GetSpin(); <<
161 // New Property of ChargeState (not well doc <<
162 <<
163 // IDEA: Improve the implementation using ha <<
164 // -- and handle to the old one (which can <<
165 // must not be left to hang loose <<
166 // <<
167 // fpChargeState= new G4ChargeState( charge <<
168 // electric_dipole_moment, magneti <<
169 } <<
170 <<
171 // Load values from array <<
172 // <<
173 // Note that momentum direction must-be/is nor <<
174 // <<
175 void G4FieldTrack::LoadFromArray(const G4doubl <<
176 G4int n <<
177 { <<
178 // Fill the variables not integrated with ze <<
179 // <<
180 G4double valArr[ncompSVEC]; <<
181 for(G4int i=0; i<noVarsIntegrated; ++i) <<
182 { <<
183 valArr[i] = valArrIn[i]; <<
184 } <<
185 for(G4int i=noVarsIntegrated; i<ncompSVEC; + <<
186 { <<
187 valArr[i] = 0.0; <<
188 } <<
189 <<
190 SixVector[0] = valArr[0]; <<
191 SixVector[1] = valArr[1]; <<
192 SixVector[2] = valArr[2]; <<
193 SixVector[3] = valArr[3]; <<
194 SixVector[4] = valArr[4]; <<
195 SixVector[5] = valArr[5]; <<
196 <<
197 G4ThreeVector Momentum(valArr[3],valArr[4],v <<
198 <<
199 G4double momentum_square= Momentum.mag2(); <<
200 fMomentumDir= Momentum.unit(); <<
201 <<
202 fKineticEnergy = momentum_square <<
203 / (std::sqrt(momentum_square+ <<
204 + fRestMass_c2 ); <<
205 // The above equation is stable for small <<
206 <<
207 // The following components may or may not b <<
208 // integrated over -- integration is optiona <<
209 // fKineticEnergy = valArr[6]; <<
210 <<
211 fLabTimeOfFlight = valArr[7]; <<
212 fProperTimeOfFlight = valArr[8]; <<
213 G4ThreeVector vecPolarization= G4ThreeVector <<
214 SetPolarization( vecPolarization ); <<
215 <<
216 // fMomentumDir=G4ThreeVector(valArr[13],val <<
217 // fDistanceAlongCurve= valArr[]; <<
218 } 36 }
219 37