1 | // |
---|
2 | // ******************************************************************** |
---|
3 | // * License and Disclaimer * |
---|
4 | // * * |
---|
5 | // * The Geant4 software is copyright of the Copyright Holders of * |
---|
6 | // * the Geant4 Collaboration. It is provided under the terms and * |
---|
7 | // * conditions of the Geant4 Software License, included in the file * |
---|
8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
---|
9 | // * include a list of copyright holders. * |
---|
10 | // * * |
---|
11 | // * Neither the authors of this software system, nor their employing * |
---|
12 | // * institutes,nor the agencies providing financial support for this * |
---|
13 | // * work make any representation or warranty, express or implied, * |
---|
14 | // * regarding this software system or assume any liability for its * |
---|
15 | // * use. Please see the license in the file LICENSE and URL above * |
---|
16 | // * for the full disclaimer and the limitation of liability. * |
---|
17 | // * * |
---|
18 | // * This code implementation is the result of the scientific and * |
---|
19 | // * technical work of the GEANT4 collaboration. * |
---|
20 | // * By using, copying, modifying or distributing the software (or * |
---|
21 | // * any work based on the software) you agree to acknowledge its * |
---|
22 | // * use in resulting scientific publications, and indicate your * |
---|
23 | // * acceptance of all terms of the Geant4 Software license. * |
---|
24 | // ******************************************************************** |
---|
25 | // |
---|
26 | // |
---|
27 | // $Id: G4FieldTrack.cc,v 1.15 2010/07/14 10:00:36 gcosmo Exp $ |
---|
28 | // GEANT4 tag $Name: field-V09-03-03 $ |
---|
29 | // |
---|
30 | // ------------------------------------------------------------------- |
---|
31 | |
---|
32 | #include "G4FieldTrack.hh" |
---|
33 | |
---|
34 | std::ostream& operator<<( std::ostream& os, const G4FieldTrack& SixVec) |
---|
35 | { |
---|
36 | const G4double *SixV = SixVec.SixVector; |
---|
37 | os << " ( "; |
---|
38 | os << " X= " << SixV[0] << " " << SixV[1] << " " |
---|
39 | << SixV[2] << " "; // Position |
---|
40 | os << " V= " << SixV[3] << " " << SixV[4] << " " |
---|
41 | << SixV[5] << " "; // Momentum |
---|
42 | os << " v2= " |
---|
43 | << G4ThreeVector(SixV[3], SixV[4], SixV[5]).mag(); // mom magnitude |
---|
44 | os << " mdm= " << SixVec.fMomentumDir.mag(); |
---|
45 | os << " l= " << SixVec.GetCurveLength(); |
---|
46 | os << " ) "; |
---|
47 | return os; |
---|
48 | } |
---|
49 | |
---|
50 | G4FieldTrack::G4FieldTrack( const G4ThreeVector& pPosition, |
---|
51 | G4double LaboratoryTimeOfFlight, |
---|
52 | const G4ThreeVector& pMomentumDirection, |
---|
53 | G4double kineticEnergy, |
---|
54 | G4double restMass_c2, |
---|
55 | G4double charge, |
---|
56 | const G4ThreeVector& Spin, |
---|
57 | G4double magnetic_dipole_moment, |
---|
58 | G4double curve_length ) |
---|
59 | : fKineticEnergy(kineticEnergy), |
---|
60 | fRestMass_c2(restMass_c2), |
---|
61 | fLabTimeOfFlight(LaboratoryTimeOfFlight), |
---|
62 | fProperTimeOfFlight(0.), |
---|
63 | // fMomentumDir(pMomentumDirection), |
---|
64 | fChargeState( charge, magnetic_dipole_moment ) |
---|
65 | { |
---|
66 | G4double momentum = std::sqrt(kineticEnergy*kineticEnergy |
---|
67 | +2.0*restMass_c2*kineticEnergy); |
---|
68 | G4ThreeVector pMomentum= momentum * pMomentumDirection; |
---|
69 | SetCurvePnt( pPosition, pMomentum, curve_length ); |
---|
70 | // Sets momentum direction as well. |
---|
71 | |
---|
72 | fMomentumDir=pMomentumDirection; |
---|
73 | // Set the momentum direction again - keeping value from argument exactly |
---|
74 | |
---|
75 | InitialiseSpin( Spin ); |
---|
76 | } |
---|
77 | |
---|
78 | G4FieldTrack::G4FieldTrack( const G4ThreeVector& pPosition, |
---|
79 | const G4ThreeVector& pMomentumDirection, |
---|
80 | G4double curve_length, |
---|
81 | G4double kineticEnergy, |
---|
82 | const G4double restMass_c2, |
---|
83 | G4double, // velocity |
---|
84 | G4double pLaboratoryTimeOfFlight, |
---|
85 | G4double pProperTimeOfFlight, |
---|
86 | const G4ThreeVector* pSpin) |
---|
87 | : fKineticEnergy(kineticEnergy), |
---|
88 | fRestMass_c2(restMass_c2), |
---|
89 | fLabTimeOfFlight(pLaboratoryTimeOfFlight), |
---|
90 | fProperTimeOfFlight(pProperTimeOfFlight), |
---|
91 | // fMomentumDir(pMomentumDirection), |
---|
92 | fChargeState( DBL_MAX ) // charge not set |
---|
93 | { |
---|
94 | G4double momentum = std::sqrt(kineticEnergy*kineticEnergy |
---|
95 | +2.0*restMass_c2*kineticEnergy); |
---|
96 | G4ThreeVector pMomentum= momentum * pMomentumDirection; |
---|
97 | |
---|
98 | SetCurvePnt( pPosition, pMomentum, curve_length ); |
---|
99 | // Sets momentum direction as well. |
---|
100 | |
---|
101 | // Set the momentum direction again |
---|
102 | // -- to avoid numerical issues from multiplying by momentum and dividing again |
---|
103 | fMomentumDir=pMomentumDirection; |
---|
104 | |
---|
105 | G4ThreeVector Spin(0.0, 0.0, 0.0); |
---|
106 | if( !pSpin ) Spin= G4ThreeVector(0.,0.,0.); |
---|
107 | else Spin= *pSpin; |
---|
108 | InitialiseSpin( Spin ); |
---|
109 | } |
---|
110 | |
---|
111 | G4FieldTrack::G4FieldTrack( char ) // Nothing is set !! |
---|
112 | : fKineticEnergy(0.), fRestMass_c2(0.), fLabTimeOfFlight(0.), |
---|
113 | fProperTimeOfFlight(0.), fChargeState( DBL_MAX ) |
---|
114 | { |
---|
115 | G4ThreeVector Zero(0.0, 0.0, 0.0); |
---|
116 | SetCurvePnt( Zero, Zero, 0.0 ); |
---|
117 | InitialiseSpin( Zero ); |
---|
118 | } |
---|
119 | |
---|
120 | void G4FieldTrack:: |
---|
121 | SetChargeAndMoments(G4double charge, |
---|
122 | G4double magnetic_dipole_moment, // default= DBL_MAX - do not change |
---|
123 | G4double electric_dipole_moment, // ditto |
---|
124 | G4double magnetic_charge ) // ditto |
---|
125 | { |
---|
126 | fChargeState.SetChargeAndMoments( charge, magnetic_dipole_moment, |
---|
127 | electric_dipole_moment, magnetic_charge ); |
---|
128 | |
---|
129 | // fpChargeState->SetChargeAndMoments( charge, magnetic_dipole_moment, |
---|
130 | // electric_dipole_moment, magnetic_charge ); |
---|
131 | |
---|
132 | // TO-DO: Improve the implementation using handles |
---|
133 | // -- and handle to the old one (which can be shared by other copies) and |
---|
134 | // must not be left to hang loose |
---|
135 | // |
---|
136 | // fpChargeState= new G4ChargeState( charge, magnetic_dipole_moment, |
---|
137 | // electric_dipole_moment, magnetic_charge ); |
---|
138 | } |
---|