Geant4 Cross Reference |
1 // 1 2 // ******************************************* 3 // * License and Disclaimer 4 // * 5 // * The Geant4 software is copyright of th 6 // * the Geant4 Collaboration. It is provided 7 // * conditions of the Geant4 Software License 8 // * LICENSE and available at http://cern.ch/ 9 // * include a list of copyright holders. 10 // * 11 // * Neither the authors of this software syst 12 // * institutes,nor the agencies providing fin 13 // * work make any representation or warran 14 // * regarding this software system or assum 15 // * use. Please see the license in the file 16 // * for the full disclaimer and the limitatio 17 // * 18 // * This code implementation is the result 19 // * technical work of the GEANT4 collaboratio 20 // * By using, copying, modifying or distri 21 // * any work based on the software) you ag 22 // * use in resulting scientific publicati 23 // * acceptance of all terms of the Geant4 Sof 24 // ******************************************* 25 // 26 /// \file processes/phonon/src/G4VPhononProces 27 /// \brief Implementation of the G4VPhononProc 28 // 29 // 30 // 20131111 Add verbosity to report creating 31 32 #include "G4VPhononProcess.hh" 33 #include "G4DynamicParticle.hh" 34 #include "G4ExceptionSeverity.hh" 35 #include "G4LatticeManager.hh" 36 #include "G4LatticePhysical.hh" 37 #include "G4ParticleDefinition.hh" 38 #include "G4PhononLong.hh" 39 #include "G4PhononPolarization.hh" 40 #include "G4PhononTrackMap.hh" 41 #include "G4PhononTransFast.hh" 42 #include "G4PhononTransSlow.hh" 43 #include "G4ProcessType.hh" 44 #include "G4ThreeVector.hh" 45 #include "G4Track.hh" 46 47 namespace { 48 const G4ThreeVector nullVec(0.,0.,0.); // F 49 } 50 51 // Constructor and destructor 52 53 G4VPhononProcess::G4VPhononProcess(const G4Str 54 : G4VDiscreteProcess(processName, fPhonon), 55 trackKmap(G4PhononTrackMap::GetInstance()) 56 currentTrack(0) {} 57 58 G4VPhononProcess::~G4VPhononProcess() {;} 59 60 61 // Only applies to the known phonon polarizati 62 63 G4bool G4VPhononProcess::IsApplicable(const G4 64 return (&aPD==G4PhononLong::Definition() || 65 &aPD==G4PhononTransFast::Definition() || 66 &aPD==G4PhononTransSlow::Definition() ); 67 } 68 69 70 // Initialize wave vectors for currently activ 71 72 void G4VPhononProcess::StartTracking(G4Track* 73 G4VProcess::StartTracking(track); // Apply b 74 75 // FIXME: THE WAVEVECTOR SHOULD BE COMPUTED 76 if (!trackKmap->Find(track)) 77 trackKmap->SetK(track, track->GetMomentumD 78 79 currentTrack = track; // Save for use by 80 81 // Fetch lattice for current track once, use 82 G4LatticeManager* LM = G4LatticeManager::Get 83 theLattice = LM->GetLattice(track->GetVolume 84 } 85 86 void G4VPhononProcess::EndTracking() { 87 G4VProcess::EndTracking(); // Apply base 88 trackKmap->RemoveTrack(currentTrack); 89 currentTrack = 0; 90 theLattice = 0; 91 } 92 93 94 // For convenience, map phonon type to polariz 95 96 G4int G4VPhononProcess::GetPolarization(const 97 return G4PhononPolarization::Get(track.GetPa 98 } 99 100 101 // Generate random polarization from density o 102 103 G4int G4VPhononProcess::ChoosePolarization(G4d 104 G4double FTdos) const { 105 G4double norm = Ldos + STdos + FTdos; 106 G4double cProbST = STdos/norm; 107 G4double cProbFT = FTdos/norm + cProbST; 108 109 // NOTE: Order of selection done to match p 110 G4double modeMixer = G4UniformRand(); 111 if (modeMixer<cProbST) return G4PhononPolari 112 if (modeMixer<cProbFT) return G4PhononPolari 113 return G4PhononPolarization::Long; 114 } 115 116 117 // Create new secondary track from phonon conf 118 119 G4Track* G4VPhononProcess::CreateSecondary(G4i 120 const G4ThreeVector& waveVec, 121 G4double energy) const { 122 if (verboseLevel>1) { 123 G4cout << GetProcessName() << " CreateSeco 124 << " K " << waveVec << " E " << energy << 125 } 126 127 G4ThreeVector vgroup = theLattice->MapKtoVDi 128 if (verboseLevel>1) G4cout << " MapKtoVDir r 129 130 vgroup = theLattice->RotateToGlobal(vgroup); 131 if (verboseLevel>1) G4cout << " RotateToGlob 132 133 if (verboseLevel && std::fabs(vgroup.mag()-1 134 G4cout << "WARNING: " << GetProcessName() 135 << vgroup << G4endl; 136 } 137 138 G4ParticleDefinition* thePhonon = G4PhononPo 139 140 // Secondaries are created at the current tr 141 G4Track* sec = new G4Track(new G4DynamicPart 142 currentTrack->GetGlobalTime(), 143 currentTrack->GetPosition()); 144 145 // Store wavevector in lookup table for futu 146 trackKmap->SetK(sec, theLattice->RotateToGlo 147 148 if (verboseLevel>1) { 149 G4cout << GetProcessName() << " secondary 150 << trackKmap->GetK(sec) << G4endl; 151 } 152 153 sec->SetVelocity(theLattice->MapKtoV(polariz 154 sec->UseGivenVelocity(true); 155 156 return sec; 157 } 158