source: trunk/source/particles/management/src/G4DecayProducts.cc@ 1260

Last change on this file since 1260 was 1196, checked in by garnier, 16 years ago

update CVS release candidate geant4.9.3.01
File size: 10.6 KB
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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: G4DecayProducts.cc,v 1.17 2009/04/02 02:24:53 kurasige Exp $
28// GEANT4 tag $Name: geant4-09-03-cand-01 $
29//
30//
31// ------------------------------------------------------------
32// GEANT 4 class implementation file
33//
34// History: first implementation, based on object model of
35// 10 July 1996 H.Kurashige
36// 21 Oct 1996 H.Kurashige
37// 12 Dec 1997 H.Kurashige
38// ------------------------------------------------------------
39
40#include "G4ios.hh"
41#include "globals.hh"
42#include "G4DecayProducts.hh"
43
44#include "G4LorentzVector.hh"
45#include "G4LorentzRotation.hh"
46
47G4Allocator<G4DecayProducts> aDecayProductsAllocator;
48
49
50G4DecayProducts::G4DecayProducts()
51 :numberOfProducts(0),theParentParticle(0)
52{
53
54}
55
56G4DecayProducts::G4DecayProducts(const G4DynamicParticle &aParticle)
57 :numberOfProducts(0),theParentParticle(0)
58{
59 theParentParticle = new G4DynamicParticle(aParticle);
60}
61
62G4DecayProducts::G4DecayProducts(const G4DecayProducts &right)
63 :numberOfProducts(0)
64{
65 // copy parent (Deep Copy)
66 theParentParticle = new G4DynamicParticle(*right.theParentParticle);
67
68 //copy daughters (Deep Copy)
69 for (G4int index=0; index < right.numberOfProducts; index++)
70 {
71 G4DynamicParticle* daughter = right.theProductVector[index];
72 const G4DecayProducts* pPreAssigned = daughter->GetPreAssignedDecayProducts();
73 G4double properTime = daughter->GetPreAssignedDecayProperTime();
74 G4DynamicParticle* pDaughter = new G4DynamicParticle(*daughter);
75
76 if (pPreAssigned) {
77 G4DecayProducts* pPA = new G4DecayProducts(*pPreAssigned);
78 pDaughter->SetPreAssignedDecayProducts(pPA);
79 if(properTime>0.0)
80 { pDaughter->SetPreAssignedDecayProperTime(properTime); }
81 }
82
83 PushProducts( pDaughter );
84 }
85}
86
87G4DecayProducts & G4DecayProducts::operator=(const G4DecayProducts &right)
88{
89 G4int index;
90
91 if (this != &right)
92 {
93 // recreate parent
94 if (theParentParticle != 0) delete theParentParticle;
95 theParentParticle = new G4DynamicParticle(*right.theParentParticle);
96
97 // delete G4DynamicParticle objects
98 for (index=0; index < numberOfProducts; index++)
99 {
100 delete theProductVector[index];
101 }
102
103 //copy daughters (Deep Copy)
104 for (index=0; index < right.numberOfProducts; index++) {
105 PushProducts( new G4DynamicParticle(*right.theProductVector[index]) );
106 }
107 numberOfProducts = right.numberOfProducts;
108
109 }
110 return *this;
111}
112
113G4DecayProducts::~G4DecayProducts()
114{
115 //delete parent
116 if (theParentParticle != 0) delete theParentParticle;
117
118 // delete G4DynamicParticle object
119 for (G4int index=0; index < numberOfProducts; index++)
120 {
121 delete theProductVector[index];
122 }
123 numberOfProducts = 0;
124}
125
126G4DynamicParticle* G4DecayProducts::PopProducts()
127{
128 if ( numberOfProducts >0 ) {
129 numberOfProducts -= 1;
130 return theProductVector[numberOfProducts];
131 } else {
132 return 0;
133 }
134}
135
136G4int G4DecayProducts::PushProducts(G4DynamicParticle *aParticle)
137{
138 if ( numberOfProducts < MaxNumberOfProducts) {
139 theProductVector[numberOfProducts]= aParticle;
140 numberOfProducts += 1;
141 } else {
142#ifdef G4VERBOSE
143 G4cout << "G4DecayProducts::PushProducts ";
144 G4cout << " exceeds MaxNumberOfProducts(="
145 << G4int(MaxNumberOfProducts) << ")";
146 G4cout << G4endl;
147#endif
148 }
149 return numberOfProducts;
150}
151
152G4DynamicParticle* G4DecayProducts::operator[](G4int anIndex) const
153{
154 if ((numberOfProducts > anIndex) && (anIndex >=0) ) {
155 return theProductVector[anIndex];
156 } else {
157 return 0;
158 }
159}
160
161void G4DecayProducts::SetParentParticle(const G4DynamicParticle &aParticle)
162{
163 if (theParentParticle != 0) delete theParentParticle;
164 theParentParticle = new G4DynamicParticle(aParticle);
165}
166
167
168void G4DecayProducts::Boost(G4double totalEnergy, const G4ThreeVector &momentumDirection)
169{
170 // calcurate new beta
171 G4double mass = theParentParticle->GetMass();
172 G4double totalMomentum(0);
173 if (totalEnergy > mass ) totalMomentum = std::sqrt( (totalEnergy - mass)*(totalEnergy + mass) );
174 G4double betax = momentumDirection.x()*totalMomentum/totalEnergy;
175 G4double betay = momentumDirection.y()*totalMomentum/totalEnergy;
176 G4double betaz = momentumDirection.z()*totalMomentum/totalEnergy;
177 this->Boost(betax, betay, betaz);
178}
179
180void G4DecayProducts::Boost(G4double newbetax, G4double newbetay, G4double newbetaz)
181{
182 G4double mass = theParentParticle->GetMass();
183 G4double energy = theParentParticle->GetTotalEnergy();
184 G4double momentum = 0.0;
185
186 G4ThreeVector direction(0.0,0.0,1.0);
187 G4LorentzVector p4;
188
189 if (energy - mass > DBL_MIN) {
190 // calcurate beta of initial state
191 momentum = theParentParticle->GetTotalMomentum();
192 direction = theParentParticle->GetMomentumDirection();
193 G4double betax = -1.0*direction.x()*momentum/energy;
194 G4double betay = -1.0*direction.y()*momentum/energy;
195 G4double betaz = -1.0*direction.z()*momentum/energy;
196
197 for (G4int index=0; index < numberOfProducts; index++) {
198 // make G4LorentzVector for secondaries
199 p4 = theProductVector[index]->Get4Momentum();
200
201 // boost secondaries to theParentParticle's rest frame
202 p4.boost(betax, betay, betaz);
203
204 // boost secondaries to new frame
205 p4.boost(newbetax, newbetay, newbetaz);
206
207 // change energy/momentum
208 theProductVector[index]->Set4Momentum(p4);
209 }
210 } else {
211 for (G4int index=0; index < numberOfProducts; index++) {
212 // make G4LorentzVector for secondaries
213 p4 = theProductVector[index]->Get4Momentum();
214
215 // boost secondaries to new frame
216 p4.boost(newbetax, newbetay, newbetaz);
217
218 // change energy/momentum
219 theProductVector[index]->Set4Momentum(p4);
220 }
221 }
222 // make G4LorentzVector for parent in its rest frame
223 mass = theParentParticle->GetMass();
224 G4LorentzVector parent4( 0.0, 0.0, 0.0, mass);
225
226 // boost parent to new frame
227 parent4.boost(newbetax, newbetay, newbetaz);
228
229 // change energy/momentum
230 theParentParticle->Set4Momentum(parent4);
231}
232
233G4bool G4DecayProducts::IsChecked() const
234{
235 G4bool returnValue = true;
236 // check parent
237 // energy/momentum
238 G4double parent_energy = theParentParticle->GetTotalEnergy();
239 G4ThreeVector direction = theParentParticle->GetMomentumDirection();
240 G4ThreeVector parent_momentum = direction*(theParentParticle->GetTotalMomentum());
241 // check momentum dirction is a unit vector
242 if ( (parent_momentum.mag() >0.0) && (std::fabs(direction.mag()-1.0) >1.0e-6 ) ) {
243#ifdef G4VERBOSE
244 G4cout << " Momentum Direction Vector of Parent is not normalized ";
245 G4cout << " (=" << direction.mag() << ")" << G4endl;
246#endif
247 returnValue = false;
248 parent_momentum = parent_momentum * (1./direction.mag());
249 }
250
251 //daughters
252 G4double mass, energy;
253 G4ThreeVector momentum;
254 G4double total_energy = parent_energy;
255 G4ThreeVector total_momentum = parent_momentum;
256 for (G4int index=0; index < numberOfProducts; index++)
257 {
258 mass = theProductVector[index]->GetMass();
259 energy = theProductVector[index]->GetTotalEnergy();
260 direction = theProductVector[index]->GetMomentumDirection();
261 momentum = direction*(theProductVector[index]->GetTotalMomentum());
262 // check momentum dirction is a unit vector
263 if ( (momentum.mag()>0.0) && (std::fabs(direction.mag()-1.0) > 1.0e-6)) {
264#ifdef G4VERBOSE
265 G4cout << " Momentum Direction Vector of Daughter [" << index;
266 G4cout << "] is not normalized (=" << direction.mag() << ")" << G4endl;
267#endif
268 returnValue = false;
269 momentum = momentum * (1./direction.mag());
270 }
271 // whether daughter stops or not
272 if (energy - mass < DBL_MIN ) {
273#ifdef G4VERBOSE
274 G4cout << "Daughter [" << index << "] has no kinetic energy "<< G4endl;
275#endif
276 returnValue = false;
277 }
278 total_energy -= energy;
279 total_momentum -= momentum;
280 }
281 // check energy/momentum conservation
282 if ( (std::fabs(total_energy) >1.0e-9*MeV) || (total_momentum.mag() >1.0e-9*MeV ) ){
283#ifdef G4VERBOSE
284 G4cout << " Energy/Momentum is not conserved "<< G4endl;
285 G4cout << " difference between parent energy and sum of dughters' energy : "
286 << total_energy /MeV << "[MeV] " << G4endl;
287 G4cout << " difference between parent momentum and sum of dughters' momentum : "
288 << " x:" << total_momentum.getX()/MeV
289 << " y:" << total_momentum.getY()/MeV
290 << " z:" << total_momentum.getZ()/MeV
291 << G4endl;
292#endif
293 returnValue = false;
294 }
295 return returnValue;
296}
297
298void G4DecayProducts::DumpInfo() const
299{
300 G4cout << " ----- List of DecayProducts -----" << G4endl;
301 G4cout << " ------ Parent Particle ----------" << G4endl;
302 if (theParentParticle != 0) theParentParticle->DumpInfo();
303 G4cout << " ------ Daughter Particles ------" << G4endl;
304 for (G4int index=0; index < numberOfProducts; index++)
305 {
306 G4cout << " ----------" << index+1 << " -------------" << G4endl;
307 theProductVector[index]-> DumpInfo();
308 }
309 G4cout << " ----- End List of DecayProducts -----" << G4endl;
310 G4cout << G4endl;
311}
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