| Geant4 Cross Reference |
1 // 1 //
2 // ******************************************* 2 // ********************************************************************
3 // * License and Disclaimer << 3 // * DISCLAIMER *
4 // * 4 // * *
5 // * The Geant4 software is copyright of th << 5 // * The following disclaimer summarizes all the specific disclaimers *
6 // * the Geant4 Collaboration. It is provided << 6 // * of contributors to this software. The specific disclaimers,which *
7 // * conditions of the Geant4 Software License << 7 // * govern, are listed with their locations in: *
8 // * LICENSE and available at http://cern.ch/ << 8 // * http://cern.ch/geant4/license *
9 // * include a list of copyright holders. <<
10 // * 9 // * *
11 // * Neither the authors of this software syst 10 // * Neither the authors of this software system, nor their employing *
12 // * institutes,nor the agencies providing fin 11 // * institutes,nor the agencies providing financial support for this *
13 // * work make any representation or warran 12 // * work make any representation or warranty, express or implied, *
14 // * regarding this software system or assum 13 // * regarding this software system or assume any liability for its *
15 // * use. Please see the license in the file << 14 // * use. *
16 // * for the full disclaimer and the limitatio <<
17 // * 15 // * *
18 // * This code implementation is the result << 16 // * This code implementation is the intellectual property of the *
19 // * technical work of the GEANT4 collaboratio << 17 // * GEANT4 collaboration. *
20 // * By using, copying, modifying or distri << 18 // * By copying, distributing or modifying the Program (or any work *
21 // * any work based on the software) you ag << 19 // * based on the Program) you indicate your acceptance of this *
22 // * use in resulting scientific publicati << 20 // * statement, and all its terms. *
23 // * acceptance of all terms of the Geant4 Sof <<
24 // ******************************************* 21 // ********************************************************************
25 // 22 //
26 // G4ParticleChangeForMSC class implementation <<
27 // 23 //
28 // Author: Hisaya Kurashige, 23 March 1998 << 24 // $Id: G4ParticleChangeForMSC.cc,v 1.8 2001/08/16 08:17:59 kurasige Exp $
29 // Revision: Vladimir Ivantchenko, 16 January << 25 // GEANT4 tag $Name: geant4-05-01 $
30 // 23 August 2 << 26 //
31 // ------------------------------------------- << 27 //
>> 28 // --------------------------------------------------------------
>> 29 // GEANT 4 class implementation file
>> 30 //
>> 31 //
>> 32 //
>> 33 // ------------------------------------------------------------
>> 34 // Implemented for the new scheme 23 Mar. 1998 H.Kurahige
>> 35 // --------------------------------------------------------------
32 36
33 #include "G4ParticleChangeForMSC.hh" 37 #include "G4ParticleChangeForMSC.hh"
34 #include "G4SystemOfUnits.hh" <<
35 #include "G4Track.hh" 38 #include "G4Track.hh"
36 #include "G4Step.hh" 39 #include "G4Step.hh"
37 #include "G4ExceptionSeverity.hh" << 40 #include "G4TrackFastVector.hh"
>> 41 #include "G4DynamicParticle.hh"
>> 42
>> 43 G4ParticleChangeForMSC::G4ParticleChangeForMSC():G4VParticleChange()
>> 44 {
>> 45 #ifdef G4VERBOSE
>> 46 if (verboseLevel>2) {
>> 47 G4cout << "G4ParticleChangeForMSC::G4ParticleChangeForMSC() " << G4endl;
>> 48 }
>> 49 #endif
>> 50 }
>> 51
>> 52 G4ParticleChangeForMSC::~G4ParticleChangeForMSC()
>> 53 {
>> 54 #ifdef G4VERBOSE
>> 55 if (verboseLevel>2) {
>> 56 G4cout << "G4ParticleChangeForMSC::~G4ParticleChangeForMSC() " << G4endl;
>> 57 }
>> 58 #endif
>> 59 }
>> 60
>> 61 G4ParticleChangeForMSC::G4ParticleChangeForMSC(
>> 62 const G4ParticleChangeForMSC &right): G4VParticleChange(right)
>> 63 {
>> 64 if (verboseLevel>1) {
>> 65 G4cout << "G4ParticleChangeForMSC:: copy constructor is called " << G4endl;
>> 66 }
>> 67 theMomentumDirectionChange = right.theMomentumDirectionChange;
>> 68 thePositionChange = right.thePositionChange;
>> 69 theTrueStepLength = right.theTrueStepLength;
>> 70 }
38 71
39 // ------------------------------------------- << 72 // assignment operator
40 G4ParticleChangeForMSC::G4ParticleChangeForMSC << 73 G4ParticleChangeForMSC & G4ParticleChangeForMSC::operator=(
>> 74 const G4ParticleChangeForMSC &right)
41 { 75 {
42 // Disable flag that is enabled in G4VPartic << 76 if (verboseLevel>1) {
43 debugFlag = false; << 77 G4cout << "G4ParticleChangeForMSC:: assignment operator is called " << G4endl;
>> 78 }
>> 79 if (this != &right)
>> 80 {
>> 81 theListOfSecondaries = right.theListOfSecondaries;
>> 82 theSizeOftheListOfSecondaries = right.theSizeOftheListOfSecondaries;
>> 83 theNumberOfSecondaries = right.theNumberOfSecondaries;
>> 84 theStatusChange = right.theStatusChange;
>> 85 theLocalEnergyDeposit = right.theLocalEnergyDeposit;
>> 86 theSteppingControlFlag = right.theSteppingControlFlag;
>> 87
>> 88
>> 89 theMomentumDirectionChange = right.theMomentumDirectionChange;
>> 90 thePositionChange = right.thePositionChange;
>> 91 theTrueStepLength = right.theTrueStepLength;
>> 92 }
>> 93 return *this;
44 } 94 }
45 95
46 // ------------------------------------------- << 96 //----------------------------------------------------------------
>> 97 // functions for Initialization
>> 98 //
>> 99
>> 100 void G4ParticleChangeForMSC::Initialize(const G4Track& track)
>> 101 {
>> 102 // use base class's method at first
>> 103 G4VParticleChange::Initialize(track);
>> 104
>> 105 // set Energy/Momentum etc. equal to those of the parent particle
>> 106 const G4DynamicParticle* pParticle = track.GetDynamicParticle();
>> 107 theMomentumDirectionChange = pParticle->GetMomentumDirection();
>> 108
>> 109 // set Position equal to those of the parent track
>> 110 thePositionChange = track.GetPosition();
>> 111 }
>> 112
>> 113 //----------------------------------------------------------------
>> 114 // methods for updating G4Step
>> 115 //
>> 116
47 G4Step* G4ParticleChangeForMSC::UpdateStepForA 117 G4Step* G4ParticleChangeForMSC::UpdateStepForAlongStep(G4Step* pStep)
48 { 118 {
49 // update the G4Step specific attributes << 119
50 pStep->SetStepLength(theTrueStepLength); << 120 // Update the G4Step specific attributes
>> 121 pStep->SetStepLength(theTrueStepLength) ;
51 122
52 // multiple scattering calculates the final << 123 return pStep;
53 G4StepPoint* pPostStepPoint = pStep->GetPost << 124 }
54 125
>> 126 G4Step* G4ParticleChangeForMSC::UpdateStepForPostStep(G4Step* pStep)
>> 127 {
>> 128 // A physics process always calculates the final state of the particle
>> 129
>> 130 // Take note that the return type of GetMomentumChange is a
>> 131 // pointer to G4ParticleMometum. Also it is a normalized
>> 132 // momentum vector.
>> 133
>> 134 G4StepPoint* pPostStepPoint = pStep->GetPostStepPoint();
>> 135 G4Track* aTrack = pStep->GetTrack();
>> 136
55 // update momentum direction 137 // update momentum direction
56 pPostStepPoint->SetMomentumDirection(theMome << 138 pPostStepPoint->SetMomentumDirection(theMomentumDirectionChange);
57 139
58 // update position << 140 // update position
59 pPostStepPoint->SetPosition(thePosition); << 141 pPostStepPoint->SetPosition( thePositionChange );
60 return pStep; << 142
>> 143 #ifdef G4VERBOSE
>> 144 if (debugFlag) CheckIt(*aTrack);
>> 145 #endif
>> 146
>> 147 // Update the G4Step specific attributes
>> 148 return UpdateStepInfo(pStep);
>> 149 }
>> 150
>> 151 G4Step* G4ParticleChangeForMSC::UpdateStepForAtRest(G4Step* pStep)
>> 152 {
>> 153
>> 154 // Update the G4Step specific attributes
>> 155 return UpdateStepInfo(pStep);
>> 156 }
>> 157
>> 158 //----------------------------------------------------------------
>> 159 // methods for printing messages
>> 160 //
>> 161
>> 162 void G4ParticleChangeForMSC::DumpInfo() const
>> 163 {
>> 164 // use base-class DumpInfo
>> 165 G4VParticleChange::DumpInfo();
>> 166
>> 167 G4cout.precision(3);
>> 168 G4cout << " Position - x (mm) : "
>> 169 << G4std::setw(20) << thePositionChange.x()/mm
>> 170 << G4endl;
>> 171 G4cout << " Position - y (mm) : "
>> 172 << G4std::setw(20) << thePositionChange.y()/mm
>> 173 << G4endl;
>> 174 G4cout << " Position - z (mm) : "
>> 175 << G4std::setw(20) << thePositionChange.z()/mm
>> 176 << G4endl;
>> 177 G4cout << " Momentum Direction - x : "
>> 178 << G4std::setw(20) << theMomentumDirectionChange.x()
>> 179 << G4endl;
>> 180 G4cout << " Momentum Direction - y : "
>> 181 << G4std::setw(20) << theMomentumDirectionChange.y()
>> 182 << G4endl;
>> 183 G4cout << " Momentum Direction - z : "
>> 184 << G4std::setw(20) << theMomentumDirectionChange.z()
>> 185 << G4endl;
61 } 186 }
>> 187
>> 188
>> 189 G4bool G4ParticleChangeForMSC::CheckIt(const G4Track& aTrack)
>> 190 {
>> 191 G4bool itsOK = true;
>> 192 G4bool exitWithError = false;
>> 193
>> 194 G4double accuracy;
>> 195
>> 196 // check
>> 197
>> 198 // MomentumDirection should be unit vector
>> 199 accuracy = abs(theMomentumDirectionChange.mag2()-1.0);
>> 200 if (accuracy > accuracyForWarning) {
>> 201 G4cout << " G4ParticleChangeForMSC::CheckIt : ";
>> 202 G4cout << "the Momentum Change is not unit vector !!" << G4endl;
>> 203 G4cout << " Difference: " << accuracy << G4endl;
>> 204 itsOK = false;
>> 205 if (accuracy > accuracyForException) exitWithError = true;
>> 206 }
>> 207
>> 208 // dump out information of this particle change
>> 209 if (!itsOK) {
>> 210 G4cout << " G4ParticleChangeForMSC::CheckIt " <<G4endl;
>> 211 DumpInfo();
>> 212 }
>> 213
>> 214 // Exit with error
>> 215 if (exitWithError) G4Exception("G4ParticleChangeForMSC::CheckIt");
>> 216
>> 217 //correction
>> 218 if (!itsOK) {
>> 219 G4double vmag = theMomentumDirectionChange.mag();
>> 220 theMomentumDirectionChange = (1./vmag)*theMomentumDirectionChange;
>> 221 }
>> 222
>> 223
>> 224 itsOK = (itsOK) && G4VParticleChange::CheckIt(aTrack);
>> 225 return itsOK;
>> 226 }
>> 227
>> 228
>> 229
62 230
63 231