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25 // 25 //
26 // Historic fragment from M.Komogorov; clean-u 26 // Historic fragment from M.Komogorov; clean-up still necessary @@@
27 <<
28 #include "G4ExcitedStringDecay.hh" 27 #include "G4ExcitedStringDecay.hh"
29 #include "G4SystemOfUnits.hh" <<
30 #include "G4KineticTrack.hh" 28 #include "G4KineticTrack.hh"
31 #include "G4LundStringFragmentation.hh" <<
32 #include "G4HadronicInteractionRegistry.hh" <<
33 <<
34 #include "G4SampleResonance.hh" <<
35 <<
36 //#define debug_G4ExcitedStringDecay <<
37 //#define debug_G4ExcitedStringCorr <<
38 29
39 G4ExcitedStringDecay::G4ExcitedStringDecay(G4V << 30 G4ExcitedStringDecay::G4ExcitedStringDecay()
40 : G4VStringFragmentation(), theStringDecay(p <<
41 { 31 {
42 if(!ptr) { << 32 theStringDecay=NULL;
43 G4HadronicInteraction* p = <<
44 G4HadronicInteractionRegistry::Instance( <<
45 theStringDecay = static_cast<G4VLongitudin <<
46 if(!theStringDecay) { theStringDecay = new <<
47 } <<
48 SetModelName(theStringDecay->GetModelName()) <<
49 } 33 }
50 34
51 G4ExcitedStringDecay::~G4ExcitedStringDecay() << 35 G4ExcitedStringDecay::G4ExcitedStringDecay(G4VLongitudinalStringDecay * aStringDecay)
>> 36 : theStringDecay(aStringDecay)
52 {} 37 {}
53 38
54 G4KineticTrackVector *G4ExcitedStringDecay::Fr << 39 G4ExcitedStringDecay::G4ExcitedStringDecay(const G4ExcitedStringDecay &) : G4VStringFragmentation()
55 { 40 {
56 return theStringDecay->FragmentString(theStr << 41 }
57 } <<
58 42
59 G4KineticTrackVector *G4ExcitedStringDecay::Fr << 43 G4ExcitedStringDecay::~G4ExcitedStringDecay()
60 { 44 {
61 G4LorentzVector KTsum(0.,0.,0.,0.); << 45 }
62 <<
63 #ifdef debug_G4ExcitedStringDecay <<
64 G4cout<<G4endl; <<
65 G4cout<<"--------------------------- G4Excit <<
66 G4cout<<"Hadronization of Excited Strings: t <<
67 #endif <<
68 <<
69 for ( unsigned int astring=0; astring < theS <<
70 // for ( unsigned int astring=0; astring < 1 <<
71 { <<
72 // G4cout<<"theStrings->operator[](astring <<
73 if ( theStrings->operator[](astring)->IsEx <<
74 {KTsum+= theStrings->operator[](astri <<
75 else {KTsum+=theStrings->operator[](astrin <<
76 } <<
77 <<
78 G4LorentzRotation toCms( -1 * KTsum.boostVec <<
79 G4LorentzRotation toLab(toCms.inverse()); <<
80 G4LorentzVector Ptmp; <<
81 KTsum=G4LorentzVector(0.,0.,0.,0.); <<
82 <<
83 for ( unsigned int astring=0; astring < theS <<
84 // for ( unsigned int astring=0; astring < 1 <<
85 { <<
86 if ( theStrings->operator[](astring)->IsEx <<
87 { <<
88 Ptmp=toCms * theStrings->operator[](astr <<
89 theStrings->operator[](astring)->GetLeft <<
90 <<
91 Ptmp=toCms * theStrings->operator[](astr <<
92 theStrings->operator[](astring)->GetRigh <<
93 <<
94 KTsum+= theStrings->operator[](astring)- <<
95 } <<
96 else <<
97 { <<
98 Ptmp=toCms * theStrings->operator[](astr <<
99 theStrings->operator[](astring)->GetKine <<
100 KTsum+= theStrings->operator[](astring)- <<
101 } <<
102 } <<
103 <<
104 G4SampleResonance BrW; <<
105 const G4ParticleDefinition* TrackDefinition= <<
106 <<
107 G4KineticTrackVector * theResult = new G4Kin <<
108 G4int attempts(0); <<
109 G4bool success=false; <<
110 G4bool NeedEnergyCorrector=false; <<
111 do { <<
112 #ifdef debug_G4ExcitedStringDecay <<
113 G4cout<<"New try No "<<attempts<<" to <<
114 #endif <<
115 <<
116 std::for_each(theResult->begin() , theResult <<
117 theResult->clear(); <<
118 <<
119 attempts++; <<
120 <<
121 G4LorentzVector KTsecondaries(0.,0.,0.,0.); <<
122 NeedEnergyCorrector=false; <<
123 <<
124 for ( unsigned int astring=0; astring < theS <<
125 // for ( unsigned int astring=0; astri <<
126 // for ( unsigned int astring=1; astri <<
127 // for ( unsigned int astring=0; astri <<
128 { <<
129 #ifdef debug_G4ExcitedStringDecay <<
130 G4cout<<"String No "<<astring+1<<" E <<
131 <<
132 G4cout<<"String No "<<astring+1<<" 4 <<
133 <<" "<<theStrings->operator[](astrin <<
134 #endif <<
135 <<
136 G4KineticTrackVector * generatedKine <<
137 if ( theStrings->operator[](astring)->IsEx <<
138 { <<
139 #ifdef debug_G4ExcitedStringDecay <<
140 G4cout<<"Fragment String with par <<
141 <<theStrings->operator[](as <<
142 <<theStrings->operator[](as <<
143 <<"Direction "<<theStrings- <<
144 #endif <<
145 generatedKineticTracks=FragmentString <<
146 #ifdef debug_G4ExcitedStringDecay <<
147 G4cout<<"(G4ExcitedStringDecay) N <<
148 <<generatedKineticTracks->s <<
149 #endif <<
150 } else { <<
151 #ifdef debug_G4ExcitedStringDecay <<
152 G4cout<<" GetTrack from the Str <<
153 #endif <<
154 G4LorentzVector Mom=theStrings->o <<
155 G4KineticTrack * aTrack= new G4Ki <<
156 theStrings->operat <<
157 theStrings->operat <<
158 G4ThreeVector(0), <<
159 <<
160 aTrack->SetPosition(theStrings->o <<
161 <<
162 #ifdef debug_G4ExcitedStringDecay <<
163 G4cout<<" A particle stored in <<
164 #endif <<
165 <<
166 generatedKineticTracks = new G4KineticT <<
167 generatedKineticTracks->push_back(aTrac <<
168 } <<
169 <<
170 if (generatedKineticTracks == nullptr || g <<
171 { <<
172 // G4cerr << "G4VPartonStringMode <<
173 delete generatedKineticTracks; <<
174 generatedKineticTracks = nullptr; <<
175 continue; <<
176 } <<
177 <<
178 G4LorentzVector KTsum1(0.,0.,0.,0.); <<
179 for ( unsigned int aTrack=0; aTrack< <<
180 { <<
181 #ifdef debug_G4ExcitedStringDecay <<
182 G4cout<<"Prod part No. "<<aTrack+ <<
183 <<(*generatedKineticTracks) <<
184 <<(*generatedKineticTracks) <<
185 <<(*generatedKineticTracks) <<
186 #endif <<
187 // --------------- Sampling mass <<
188 TrackDefinition = (*generatedKine <<
189 <<
190 if (TrackDefinition->IsShortLived()) <<
191 { <<
192 G4double NewTrackMass = <<
193 BrW.SampleMass( TrackDefiniti <<
194 BrW.GetMinimu <<
195 TrackDefiniti <<
196 G4LorentzVector Tmp=G4LorentzVe <<
197 Tmp.setE(std::sqrt(sqr(NewTrack <<
198 <<
199 (*generatedKineticTracks)[aTrac <<
200 <<
201 #ifdef debug_G4ExcitedStringDec <<
202 G4cout<<"Resonance *** "<<aTrac <<
203 <<(*generatedKineticTrack <<
204 <<(*generatedKineticTrack <<
205 <<(*generatedKineticTrack <<
206 #endif <<
207 } <<
208 //------------------------------- <<
209 <<
210 theResult->push_back(generatedKin <<
211 KTsum1+= (*generatedKineticTracks <<
212 } <<
213 KTsecondaries+=KTsum1; <<
214 <<
215 #ifdef debug_G4ExcitedStringDecay <<
216 G4cout << "String secondaries(" <<ge <<
217 <<"Init string momentum: "< <<
218 <<"Final hadrons momentum: "< <<
219 #endif <<
220 <<
221 if ( KTsum1.e() > 0 && <<
222 std::abs((KTsum1.e()-theString <<
223 { <<
224 NeedEnergyCorrector=true; <<
225 } <<
226 <<
227 #ifdef debug_G4ExcitedStringDecay <<
228 G4cout<<"NeedEnergyCorrection yes/no <<
229 #endif <<
230 <<
231 // clean up <<
232 delete generatedKineticTracks; <<
233 success=true; <<
234 } <<
235 <<
236 if ( NeedEnergyCorrector ) success=EnergyAnd <<
237 } while (!success && (attempts < 100)); /* <<
238 <<
239 for ( unsigned int aTrack=0; aTrack<theResul <<
240 { <<
241 Ptmp=(*theResult)[aTrack]->Get4Momentum(); <<
242 Ptmp.transform( toLab); <<
243 (*theResult)[aTrack]->Set4Momentum(Ptmp); <<
244 } <<
245 <<
246 #ifdef debug_G4ExcitedStringDecay <<
247 G4cout<<"End of the strings fragmentation (G <<
248 <<
249 G4LorentzVector KTsum1(0.,0.,0.,0.); <<
250 <<
251 for ( unsigned int aTrack=0; aTrack<theResul <<
252 { <<
253 G4cout << " corrected tracks .. " << (*t <<
254 <<" " << (*theResult)[aTrack]->Get4Mome <<
255 <<" " << (*theResult)[aTrack]->Get4Mome <<
256 KTsum1+= (*theResult)[aTrack]->Get4Momen <<
257 } <<
258 <<
259 G4cout << "Needcorrector/success " << NeedEn <<
260 << ", Corrected total 4 momentum " < <<
261 if ( ! success ) G4cout << "failed to correc <<
262 46
263 G4cout<<"End of the Hadronization (G4Excited << 47 const G4ExcitedStringDecay & G4ExcitedStringDecay::operator=(const G4ExcitedStringDecay &)
264 #endif << 48 {
>> 49 throw G4HadronicException(__FILE__, __LINE__, "G4ExcitedStringDecay::operator= meant to not be accessable");
>> 50 return *this;
>> 51 }
265 52
266 if (!success) << 53 int G4ExcitedStringDecay::operator==(const G4ExcitedStringDecay &) const
267 { << 54 {
268 if (theResult->size() != 0) << 55 return 0;
269 { <<
270 std::for_each(theResult->begin() , theRe <<
271 theResult->clear(); <<
272 delete theResult; theResult=0; <<
273 } <<
274 for ( unsigned int astring=0; astring < th <<
275 // for ( unsigned int astring=0; astring < <<
276 { <<
277 if ( theStrings->operator[](astring)->Is <<
278 { <<
279 Ptmp=theStrings->operator[](astring)-> <<
280 Ptmp.transform( toLab); <<
281 theStrings->operator[](astring)->GetLe <<
282 <<
283 Ptmp=theStrings->operator[](astring)-> <<
284 Ptmp.transform( toLab); <<
285 theStrings->operator[](astring)->GetRi <<
286 } <<
287 else <<
288 { <<
289 Ptmp=theStrings->operator[](astring)-> <<
290 Ptmp.transform( toLab); <<
291 theStrings->operator[](astring)->GetKi <<
292 } <<
293 } <<
294 } <<
295 return theResult; <<
296 } 56 }
297 57
>> 58 int G4ExcitedStringDecay::operator!=(const G4ExcitedStringDecay &) const
>> 59 {
>> 60 return 1;
>> 61 }
298 62
299 G4bool G4ExcitedStringDecay:: 63 G4bool G4ExcitedStringDecay::
300 EnergyAndMomentumCorrector(G4KineticTrackVecto 64 EnergyAndMomentumCorrector(G4KineticTrackVector* Output, G4LorentzVector& TotalCollisionMom)
301 { << 65 {
302 const int nAttemptScale = 500; 66 const int nAttemptScale = 500;
303 const double ErrLimit = 1.E-5; 67 const double ErrLimit = 1.E-5;
304 if (Output->empty()) return TRUE; << 68 if (Output->empty())
>> 69 return TRUE;
305 G4LorentzVector SumMom; 70 G4LorentzVector SumMom;
306 G4double SumMass = 0; << 71 G4double SumMass = 0;
307 G4double TotalCollisionMass = Total 72 G4double TotalCollisionMass = TotalCollisionMom.m();
308 << 73 if( !(TotalCollisionMass<1) && !(TotalCollisionMass>-1) )
309 std::vector<G4double> HadronMass; G4double << 74 {
310 << 75 std::cout << "TotalCollisionMomentum = "<<TotalCollisionMom<<G4endl;
311 #ifdef debug_G4ExcitedStringCorr << 76 throw G4HadronicException(__FILE__, __LINE__, "G4ExcitedStringDecay received nan mass...");
312 G4cout<<G4endl<<"EnergyAndMomentumCorrecto << 77 }
313 #endif <<
314 // Calculate sum hadron 4-momenta and summ 78 // Calculate sum hadron 4-momenta and summing hadron mass
315 unsigned int cHadron; 79 unsigned int cHadron;
316 for (cHadron = 0; cHadron < Output->size() << 80 for(cHadron = 0; cHadron < Output->size(); cHadron++)
317 { 81 {
318 SumMom += Output->operator[](cHadron) 82 SumMom += Output->operator[](cHadron)->Get4Momentum();
319 HadronM=Output->operator[](cHadron)->G << 83 if( !(SumMom<1) && !(SumMom>-1) )
320 SumMass += Output->operator[](cHadron) << 84 {
>> 85 throw G4HadronicException(__FILE__, __LINE__, "G4ExcitedStringDecay::EnergyAndMomentumCorrector() received nan momentum...");
>> 86 }
>> 87 SumMass += Output->operator[](cHadron)->GetDefinition()->GetPDGMass();
>> 88 if( !(SumMass<1) && !(SumMass>-1) )
>> 89 {
>> 90 throw G4HadronicException(__FILE__, __LINE__, "G4ExcitedStringDecay::EnergyAndMomentumCorrector() received nan mass...");
>> 91 }
321 } 92 }
322 <<
323 #ifdef debug_G4ExcitedStringCorr <<
324 G4cout<<"Sum part mom "<<SumMom<<" "<<SumM <<
325 <<"Sum str mom "<<TotalCollisionMom <<
326 G4cout<<"SumMass TotalCollisionMass "<<Sum <<
327 #endif <<
328 <<
329 // Cannot correct a single particle 93 // Cannot correct a single particle
330 if (Output->size() < 2) return FALSE; 94 if (Output->size() < 2) return FALSE;
331 << 95
332 if (SumMass > TotalCollisionMass) return F 96 if (SumMass > TotalCollisionMass) return FALSE;
333 SumMass = SumMom.m2(); 97 SumMass = SumMom.m2();
334 if (SumMass < 0) return FALSE; 98 if (SumMass < 0) return FALSE;
335 SumMass = std::sqrt(SumMass); 99 SumMass = std::sqrt(SumMass);
336 100
337 // Compute c.m.s. hadron velocity and boos << 101 // Compute c.m.s. hadron velocity and boost KTV to hadron c.m.s.
338 // G4ThreeVector Beta = -SumMom.boostVecto << 102 G4ThreeVector Beta = -SumMom.boostVector();
339 G4ThreeVector Beta = -TotalCollisionMom.bo <<
340 Output->Boost(Beta); 103 Output->Boost(Beta);
341 104
342 // Scale total c.m.s. hadron energy (hadro 105 // Scale total c.m.s. hadron energy (hadron system mass).
343 // It should be equal interaction mass 106 // It should be equal interaction mass
344 G4double Scale = 1; 107 G4double Scale = 1;
345 G4int cAttempt = 0; 108 G4int cAttempt = 0;
346 G4double Sum = 0; 109 G4double Sum = 0;
347 G4bool success = false; 110 G4bool success = false;
348 for (cAttempt = 0; cAttempt < nAttemptScal << 111 for(cAttempt = 0; cAttempt < nAttemptScale; cAttempt++)
349 { 112 {
350 Sum = 0; 113 Sum = 0;
351 for (cHadron = 0; cHadron < Output->size << 114 for(cHadron = 0; cHadron < Output->size(); cHadron++)
352 { 115 {
353 HadronM = HadronMass.at(cHadron); <<
354 G4LorentzVector HadronMom = Output->op 116 G4LorentzVector HadronMom = Output->operator[](cHadron)->Get4Momentum();
355 HadronMom.setVect(Scale*HadronMom.vect 117 HadronMom.setVect(Scale*HadronMom.vect());
356 G4double E = std::sqrt(HadronMom.vect( << 118 G4double E = std::sqrt(HadronMom.vect().mag2() + sqr(Output->operator[](cHadron)->GetDefinition()->GetPDGMass()));
357 <<
358 HadronMom.setE(E); 119 HadronMom.setE(E);
359 Output->operator[](cHadron)->Set4Momen 120 Output->operator[](cHadron)->Set4Momentum(HadronMom);
360 Sum += E; 121 Sum += E;
361 } 122 }
362 Scale = TotalCollisionMass/Sum; << 123 Scale = TotalCollisionMass/Sum;
363 #ifdef debug_G4ExcitedStringCorr << 124 #ifdef debug_G4ExcitedStringDecay
364 G4cout << "Scale-1=" << Scale -1 125 G4cout << "Scale-1=" << Scale -1
365 << ", TotalCollisionMass=" << To << 126 << ", TotalCollisionMass=" << TotalCollisionMass
366 << ", Sum=" << Sum << 127 << ", Sum=" << Sum
367 << G4endl; << 128 << G4endl;
368 #endif << 129 #endif
369 if (std::fabs(Scale - 1) <= ErrLimit) 130 if (std::fabs(Scale - 1) <= ErrLimit)
370 { 131 {
371 success = true; 132 success = true;
372 break; 133 break;
373 } 134 }
374 } 135 }
375 << 136
376 #ifdef debug_G4ExcitedStringCorr << 137 if(!success)
377 if (!success) <<
378 { 138 {
379 G4cout << "G4ExcitedStringDecay::EnergyA 139 G4cout << "G4ExcitedStringDecay::EnergyAndMomentumCorrector - Warning"<<G4endl;
380 G4cout << " Scale not unity at end of 140 G4cout << " Scale not unity at end of iteration loop: "<<TotalCollisionMass<<" "<<Sum<<" "<<Scale<<G4endl;
381 G4cout << " Number of secondaries: " < 141 G4cout << " Number of secondaries: " << Output->size() << G4endl;
382 G4cout << " Wanted total energy: " << 142 G4cout << " Wanted total energy: " << TotalCollisionMom.e() << G4endl;
383 G4cout << " Increase number of attempt 143 G4cout << " Increase number of attempts or increase ERRLIMIT"<<G4endl;
384 // throw G4HadronicException(__FILE__, _ << 144 // throw G4HadronicException(__FILE__, __LINE__, "G4ExcitedStringDecay failed to correct...");
385 } 145 }
386 #endif <<
387 146
388 // Compute c.m.s. interaction velocity and 147 // Compute c.m.s. interaction velocity and KTV back boost
389 Beta = TotalCollisionMom.boostVector(); 148 Beta = TotalCollisionMom.boostVector();
390 Output->Boost(Beta); 149 Output->Boost(Beta);
391 <<
392 return success; 150 return success;
393 } << 151 }
394 <<
395 152