ECCE @ EIC Software
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Macros Groups Pages
G4MuonMinusAtomicCapture.cc
Go to the documentation of this file. Or view the newest version in sPHENIX GitHub for file G4MuonMinusAtomicCapture.cc
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 //---------------------------------------------------------------------
28 //
29 // GEANT4 Class
30 //
31 // GEANT4 Class header file
32 //
33 // File name: G4MuonMinusAtomicCapture
34 //
35 // 20160912 K.L. Genser - New process using G4MuonicAtom somewhat
36 // based on G4HadronStoppingProcess
37 //
38 // Class Description:
39 //
40 // Stopping of mu-
41 //
42 // G4VParticleChange will contain gammas from G4EmCaptureCascade and
43 // resulting G4MuonicAtom
44 //
45 //
46 //------------------------------------------------------------------------
47 
49 #include "G4ParticleDefinition.hh"
50 #include "G4HadronicProcessType.hh"
51 #include "G4MuonMinusBoundDecay.hh"
52 #include "G4HadronicInteraction.hh"
53 #include "G4HadProjectile.hh"
55 #include "G4EmCaptureCascade.hh"
56 #include "G4MuonMinus.hh"
57 #include "G4IonTable.hh"
58 #include "G4RandomDirection.hh"
59 #include "G4HadSecondary.hh"
60 
61 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
62 
64  : G4VRestProcess(name, fHadronic),
65  fElementSelector(new G4ElementSelector()),
66  fEmCascade(new G4EmCaptureCascade()), // Owned by InteractionRegistry
67  theTotalResult(new G4ParticleChange()),
68  result(nullptr)
69 {
72 }
73 
74 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
75 
77 {
79  delete theTotalResult;
80 }
81 
82 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
83 
85 {
86  return (&p == G4MuonMinus::MuonMinus());
87 }
88 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
89 
90 void
92 {
94 }
95 
96 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
97 
99 {
101 }
102 
103 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
104 
107 {
108  *condition = NotForced;
109  return 0.0;
110 }
111 
112 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
113 
115  const G4Step&)
116 {
117  // if primary is not Alive then do nothing (how?)
118  theTotalResult->Initialize(track);
119 
120  G4Nucleus* nucleus = &targetNucleus;
121  // the call below actually sets the nucleus params;
122  // G4Nucleus targetNucleus; is a member of G4HadronicProcess
123  // G4Element* elm =
124  fElementSelector->SelectZandA(track, nucleus);
125 
126  thePro.Initialise(track); // thePro was G4HadProjectile from G4HadronicProcess
127 
128  // save track time an dstart capture from zero time
129  thePro.SetGlobalTime(0.0);
130  G4double time0 = track.GetGlobalTime();
131 
132  // Do the electromagnetic cascade in the nuclear field.
133  // EM cascade should keep G4HadFinalState object,
134  // because it will not be deleted at the end of this method
135  //
136  result = fEmCascade->ApplyYourself(thePro, *nucleus);
137  G4double ebound = result->GetLocalEnergyDeposit(); // may need to carry this over; review
138  G4double edep = 0.0;
139  G4int nSecondaries = result->GetNumberOfSecondaries();
140  thePro.SetBoundEnergy(ebound);
141 
142  // creating the muonic atom
143  ++nSecondaries;
144 
146  G4ParticleDefinition* muonicAtom = itp->GetMuonicAtom(nucleus->GetZ_asInt(),
147  nucleus->GetA_asInt());
148 
149  G4DynamicParticle* dp = new G4DynamicParticle(muonicAtom,G4RandomDirection(),0.);
150  G4HadSecondary hadSec(dp);
151  hadSec.SetTime(time0);
152  result->AddSecondary(hadSec);
153 
154  // Fill results
155  //
158  theTotalResult->SetNumberOfSecondaries(nSecondaries);
159  G4double w = track.GetWeight();
161 
162 #ifdef G4VERBOSE
163  if (GetVerboseLevel() > 1) {
164  G4cout << __func__
165  << " nSecondaries "
166  << nSecondaries
167  << G4endl;
168  }
169 #endif
170 
171  for(G4int i=0; i<nSecondaries; ++i) {
173 
174  // add track global time to the reaction time
175  G4double time = sec->GetTime();
176  if(time < 0.0) { time = 0.0; }
177  time += time0;
178 
179 #ifdef G4VERBOSE
180  if (GetVerboseLevel() > 1) {
181  G4cout << __func__
182  << " "
183  << i
184  << " Resulting secondary "
185  << sec->GetParticle()->GetPDGcode()
186  << " "
188  << G4endl;
189  }
190 #endif
191 
192  // create secondary track
193  G4Track* t = new G4Track(sec->GetParticle(),
194  time,
195  track.GetPosition());
196  t->SetWeight(w*sec->GetWeight());
197 
200  }
201  result->Clear();
202 
203  // fixme: needs to be done at the MuonicAtom level
204  // if (epReportLevel != 0) { // G4HadronicProcess::
205  // CheckEnergyMomentumConservation(track, *nucleus);
206  // }
207  return theTotalResult;
208 }
209 
210 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
211 
212 void G4MuonMinusAtomicCapture::ProcessDescription(std::ostream& outFile) const
213 {
214  outFile << "Stopping of mu- using default element selector, EM cascade"
215  << "G4MuonicAtom is created\n";
216 }
217 
218 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....