Geant4 9.6.0
Toolkit for the simulation of the passage of particles through matter
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G4QMDCollision.cc
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1//
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25//
26// 080602 Fix memory leaks by T. Koi
27// 081120 Add deltaT in signature of CalKinematicsOfBinaryCollisions
28// Add several required updating of Mean Filed
29// Modified handling of absorption case by T. Koi
30// 090126 Fix in absorption case by T. Koi
31// 090331 Fix for gamma participant by T. Koi
32//
33#include "G4QMDCollision.hh"
34#include "G4Scatterer.hh"
35#include "G4PhysicalConstants.hh"
36#include "G4SystemOfUnits.hh"
37#include "Randomize.hh"
38
39G4QMDCollision::G4QMDCollision()
40: deltar ( 4 )
41, bcmax0 ( 1.323142 ) // NN maximum impact parameter
42, bcmax1 ( 2.523 ) // others maximum impact parameter
43, sig0 ( 55 ) // NN cross section
44//110617 fix for gcc 4.6 compilation warnings
45//, sig1 ( 200 ) // others cross section
46, epse ( 0.0001 )
47{
48 theScatterer = new G4Scatterer();
49}
50
51
52
53G4QMDCollision::~G4QMDCollision()
54{
55 delete theScatterer;
56}
57
58
59void G4QMDCollision::CalKinematicsOfBinaryCollisions( G4double dt )
60{
61 G4double deltaT = dt;
62
63 G4int n = theSystem->GetTotalNumberOfParticipant();
64//081118
65 //G4int nb = 0;
66 for ( G4int i = 0 ; i < n ; i++ )
67 {
68 theSystem->GetParticipant( i )->UnsetHitMark();
69 theSystem->GetParticipant( i )->UnsetHitMark();
70 //nb += theSystem->GetParticipant( i )->GetBaryonNumber();
71 }
72 //G4cout << "nb = " << nb << " n = " << n << G4endl;
73
74
75//071101
76 for ( G4int i = 0 ; i < n ; i++ )
77 {
78
79 //std::cout << i << " " << theSystem->GetParticipant( i )->GetDefinition()->GetParticleName() << " " << theSystem->GetParticipant( i )->GetPosition() << std::endl;
80
81 if ( theSystem->GetParticipant( i )->GetDefinition()->IsShortLived() )
82 {
83
84 G4bool decayed = false;
85
86 G4ParticleDefinition* pd0 = theSystem->GetParticipant( i )->GetDefinition();
87 G4ThreeVector p0 = theSystem->GetParticipant( i )->GetMomentum();
88 G4ThreeVector r0 = theSystem->GetParticipant( i )->GetPosition();
89
90 G4LorentzVector p40 = theSystem->GetParticipant( i )->Get4Momentum();
91
92 G4double eini = theMeanField->GetTotalPotential() + p40.e();
93
94 G4int n0 = theSystem->GetTotalNumberOfParticipant();
95 G4int i0 = 0;
96
97 G4bool isThisEnergyOK = false;
98
99 for ( G4int ii = 0 ; ii < 4 ; ii++ )
100 {
101
102 //G4LorentzVector p4 = theSystem->GetParticipant( i )->Get4Momentum();
103 G4LorentzVector p400 = p40;
104
105 p400 *= GeV;
106 //G4KineticTrack kt( theSystem->GetParticipant( i )->GetDefinition() , 0.0 , (theSystem->GetParticipant( i )->GetPosition())*fermi , p4 );
107 G4KineticTrack kt( pd0 , 0.0 , r0*fermi , p400 );
108 //std::cout << "G4KineticTrack " << i << " " << kt.GetDefinition()->GetParticleName() << kt.GetPosition() << std::endl;
109 G4KineticTrackVector* secs = NULL;
110 secs = kt.Decay();
111 G4int id = 0;
112 G4double et = 0;
113 if ( secs )
114 {
115 for ( G4KineticTrackVector::iterator it
116 = secs->begin() ; it != secs->end() ; it++ )
117 {
118/*
119 G4cout << "G4KineticTrack"
120 << " " << (*it)->GetDefinition()->GetParticleName()
121 << " " << (*it)->Get4Momentum()
122 << " " << (*it)->GetPosition()/fermi
123 << G4endl;
124*/
125 if ( id == 0 )
126 {
127 theSystem->GetParticipant( i )->SetDefinition( (*it)->GetDefinition() );
128 theSystem->GetParticipant( i )->SetMomentum( (*it)->Get4Momentum().v()/GeV );
129 theSystem->GetParticipant( i )->SetPosition( (*it)->GetPosition()/fermi );
130 //theMeanField->Cal2BodyQuantities( i );
131 et += (*it)->Get4Momentum().e()/GeV;
132 }
133 if ( id > 0 )
134 {
135 // Append end;
136 theSystem->SetParticipant ( new G4QMDParticipant ( (*it)->GetDefinition() , (*it)->Get4Momentum().v()/GeV , (*it)->GetPosition()/fermi ) );
137 et += (*it)->Get4Momentum().e()/GeV;
138 if ( id > 1 )
139 {
140 //081118
141 //G4cout << "G4QMDCollision id >2; id= " << id << G4endl;
142 }
143 }
144 id++; // number of daughter particles
145
146 delete *it;
147 }
148
149 theMeanField->Update();
150 i0 = id-1; // 0 enter to i
151
152 delete secs;
153 }
154
155// EnergyCheck
156
157 G4double efin = theMeanField->GetTotalPotential() + et;
158 //std::cout << std::abs ( eini - efin ) - epse << std::endl;
159// std::cout << std::abs ( eini - efin ) - epse*10 << std::endl;
160// *10 TK
161 if ( std::abs ( eini - efin ) < epse*10 )
162 {
163 // Energy OK
164 isThisEnergyOK = true;
165 break;
166 }
167 else
168 {
169
170 theSystem->GetParticipant( i )->SetDefinition( pd0 );
171 theSystem->GetParticipant( i )->SetPosition( r0 );
172 theSystem->GetParticipant( i )->SetMomentum( p0 );
173
174 for ( G4int i0i = 0 ; i0i < id-1 ; i0i++ )
175 {
176 //081118
177 //std::cout << "Decay Energitically Blocked deleteing " << i0i+n0 << std::endl;
178 theSystem->DeleteParticipant( i0i+n0 );
179 }
180 //081103
181 theMeanField->Update();
182 }
183
184 }
185
186
187// Pauli Check
188 if ( isThisEnergyOK == true )
189 {
190 if ( theMeanField->IsPauliBlocked ( i ) != true )
191 {
192
193 G4bool allOK = true;
194 for ( G4int i0i = 0 ; i0i < i0 ; i0i++ )
195 {
196 if ( theMeanField->IsPauliBlocked ( i0i+n0 ) == true )
197 {
198 allOK = false;
199 break;
200 }
201 }
202
203 if ( allOK )
204 {
205 decayed = true; //Decay Succeeded
206 }
207 }
208
209 }
210//
211
212 if ( decayed )
213 {
214 //081119
215 //G4cout << "Decay Suceeded! " << std::endl;
216 theSystem->GetParticipant( i )->SetHitMark();
217 for ( G4int i0i = 0 ; i0i < i0 ; i0i++ )
218 {
219 theSystem->GetParticipant( i0i+n0 )->SetHitMark();
220 }
221
222 }
223 else
224 {
225
226// Decay Blocked and re-enter orginal participant;
227
228 if ( isThisEnergyOK == true ) // for false case already done
229 {
230
231 theSystem->GetParticipant( i )->SetDefinition( pd0 );
232 theSystem->GetParticipant( i )->SetPosition( r0 );
233 theSystem->GetParticipant( i )->SetMomentum( p0 );
234
235 for ( G4int i0i = 0 ; i0i < i0 ; i0i++ )
236 {
237 //081118
238 //std::cout << "Decay Blocked deleteing " << i0i+n0 << std::endl;
239 theSystem->DeleteParticipant( i0i+n0 );
240 }
241 //081103
242 theMeanField->Update();
243 }
244
245 }
246
247 } //shortlive
248 } // go next participant
249//071101
250
251
252 n = theSystem->GetTotalNumberOfParticipant();
253
254//081118
255 //for ( G4int i = 1 ; i < n ; i++ )
256 for ( G4int i = 1 ; i < theSystem->GetTotalNumberOfParticipant() ; i++ )
257 {
258
259 //std::cout << "Collision i " << i << std::endl;
260 if ( theSystem->GetParticipant( i )->IsThisHit() ) continue;
261
262 G4ThreeVector ri = theSystem->GetParticipant( i )->GetPosition();
263 G4LorentzVector p4i = theSystem->GetParticipant( i )->Get4Momentum();
264 G4double rmi = theSystem->GetParticipant( i )->GetMass();
265 G4ParticleDefinition* pdi = theSystem->GetParticipant( i )->GetDefinition();
266//090331 gamma
267 if ( pdi->GetPDGMass() == 0.0 ) continue;
268
269 //std::cout << " p4i00 " << p4i << std::endl;
270 for ( G4int j = 0 ; j < i ; j++ )
271 {
272
273
274/*
275 std::cout << "Collision " << i << " " << theSystem->GetParticipant( i )->IsThisProjectile() << std::endl;
276 std::cout << "Collision " << j << " " << theSystem->GetParticipant( j )->IsThisProjectile() << std::endl;
277 std::cout << "Collision " << i << " " << theSystem->GetParticipant( i )->IsThisTarget() << std::endl;
278 std::cout << "Collision " << j << " " << theSystem->GetParticipant( j )->IsThisTarget() << std::endl;
279*/
280
281 // Only 1 Collision allowed for each particle in a time step.
282 //081119
283 if ( theSystem->GetParticipant( i )->IsThisHit() ) continue;
284 if ( theSystem->GetParticipant( j )->IsThisHit() ) continue;
285
286 //std::cout << "Collision " << i << " " << j << std::endl;
287
288 // Do not allow collision between nucleons in target/projectile til its first collision.
289 if ( theSystem->GetParticipant( i )->IsThisProjectile() )
290 {
291 if ( theSystem->GetParticipant( j )->IsThisProjectile() ) continue;
292 }
293 else if ( theSystem->GetParticipant( i )->IsThisTarget() )
294 {
295 if ( theSystem->GetParticipant( j )->IsThisTarget() ) continue;
296 }
297
298
299 G4ThreeVector rj = theSystem->GetParticipant( j )->GetPosition();
300 G4LorentzVector p4j = theSystem->GetParticipant( j )->Get4Momentum();
301 G4double rmj = theSystem->GetParticipant( j )->GetMass();
302 G4ParticleDefinition* pdj = theSystem->GetParticipant( j )->GetDefinition();
303//090331 gamma
304 if ( pdj->GetPDGMass() == 0.0 ) continue;
305
306 G4double rr2 = theMeanField->GetRR2( i , j );
307
308// Here we assume elab (beam momentum less than 5 GeV/n )
309 if ( rr2 > deltar*deltar ) continue;
310
311 //G4double s = (p4i+p4j)*(p4i+p4j);
312 //G4double srt = std::sqrt ( s );
313
314 G4double srt = std::sqrt( (p4i+p4j)*(p4i+p4j) );
315
316 G4double cutoff = 0.0;
317 G4double bcmax = 0.0;
318 //110617 fix for gcc 4.6 compilation warnings
319 //G4double sig = 0.0;
320
321 if ( rmi < 0.94 && rmj < 0.94 )
322 {
323// nucleon or pion case
324 cutoff = rmi + rmj + 0.02;
325 bcmax = bcmax0;
326 //110617 fix for gcc 4.6 compilation warnings
327 //sig = sig0;
328 }
329 else
330 {
331 cutoff = rmi + rmj;
332 bcmax = bcmax1;
333 //110617 fix for gcc compilation warnings
334 //sig = sig1;
335 }
336
337 //std::cout << "Collision cutoff " << i << " " << j << " " << cutoff << std::endl;
338 if ( srt < cutoff ) continue;
339
340 G4ThreeVector dr = ri - rj;
341 G4double rsq = dr*dr;
342
343 G4double pij = p4i*p4j;
344 G4double pidr = p4i.vect()*dr;
345 G4double pjdr = p4j.vect()*dr;
346
347 G4double aij = 1.0 - ( rmi*rmj /pij ) * ( rmi*rmj /pij );
348 G4double bij = pidr / rmi - pjdr*rmi/pij;
349 G4double cij = rsq + ( pidr / rmi ) * ( pidr / rmi );
350 G4double brel = std::sqrt ( std::abs ( cij - bij*bij/aij ) );
351
352 if ( brel > bcmax ) continue;
353 //std::cout << "collisions3 " << std::endl;
354
355 G4double bji = -pjdr/rmj + pidr * rmj /pij;
356
357 G4double ti = ( pidr/rmi - bij / aij ) * p4i.e() / rmi;
358 G4double tj = (-pjdr/rmj - bji / aij ) * p4j.e() / rmj;
359
360
361/*
362 std::cout << "collisions4 p4i " << p4i << std::endl;
363 std::cout << "collisions4 ri " << ri << std::endl;
364 std::cout << "collisions4 p4j " << p4j << std::endl;
365 std::cout << "collisions4 rj " << rj << std::endl;
366 std::cout << "collisions4 dr " << dr << std::endl;
367 std::cout << "collisions4 pij " << pij << std::endl;
368 std::cout << "collisions4 aij " << aij << std::endl;
369 std::cout << "collisions4 bij bji " << bij << " " << bji << std::endl;
370 std::cout << "collisions4 pidr pjdr " << pidr << " " << pjdr << std::endl;
371 std::cout << "collisions4 p4i.e() p4j.e() " << p4i.e() << " " << p4j.e() << std::endl;
372 std::cout << "collisions4 rmi rmj " << rmi << " " << rmj << std::endl;
373 std::cout << "collisions4 " << ti << " " << tj << std::endl;
374*/
375 if ( std::abs ( ti + tj ) > deltaT ) continue;
376 //std::cout << "collisions4 " << std::endl;
377
378 G4ThreeVector beta = ( p4i + p4j ).boostVector();
379
380 G4LorentzVector p = p4i;
381 G4LorentzVector p4icm = p.boost( p.findBoostToCM ( p4j ) );
382 G4ThreeVector pcm = p4icm.vect();
383
384 G4double prcm = pcm.mag();
385
386 if ( prcm <= 0.00001 ) continue;
387 //std::cout << "collisions5 " << std::endl;
388
389 G4bool energetically_forbidden = !( CalFinalStateOfTheBinaryCollision ( i , j ) ); // Use Geant4 Collision Library
390 //G4bool energetically_forbidden = !( CalFinalStateOfTheBinaryCollisionJQMD ( sig , cutoff , pcm , prcm , srt, beta , gamma , i , j ) ); // JQMD Elastic
391
392/*
393 G4bool pauli_blocked = false;
394 if ( energetically_forbidden == false ) // result true
395 {
396 if ( theMeanField->IsPauliBlocked ( i ) == true || theMeanField->IsPauliBlocked ( j ) == true )
397 {
398 pauli_blocked = true;
399 //std::cout << "G4QMDRESULT Collsion Pauli Blocked " << std::endl;
400 }
401 }
402 else
403 {
404 if ( theMeanField->IsPauliBlocked ( i ) == true || theMeanField->IsPauliBlocked ( j ) == true )
405 pauli_blocked = false;
406 //std::cout << "G4QMDRESULT Collsion Blocked " << std::endl;
407 }
408*/
409
410/*
411 std::cout << "G4QMDRESULT Collsion initial p4 i and j "
412 << p4i << " " << p4j
413 << std::endl;
414*/
415// 081118
416 //if ( energetically_forbidden == true || pauli_blocked == true )
417 if ( energetically_forbidden == true )
418 {
419
420 //G4cout << " energetically_forbidden " << G4endl;
421// Collsion not allowed then re enter orginal participants
422// Now only momentum, becasuse we only consider elastic scattering of nucleons
423
424 theSystem->GetParticipant( i )->SetMomentum( p4i.vect() );
425 theSystem->GetParticipant( i )->SetDefinition( pdi );
426 theSystem->GetParticipant( i )->SetPosition( ri );
427
428 theSystem->GetParticipant( j )->SetMomentum( p4j.vect() );
429 theSystem->GetParticipant( j )->SetDefinition( pdj );
430 theSystem->GetParticipant( j )->SetPosition( rj );
431
432 theMeanField->Cal2BodyQuantities( i );
433 theMeanField->Cal2BodyQuantities( j );
434
435 }
436 else
437 {
438
439
440 G4bool absorption = false;
441 if ( n == theSystem->GetTotalNumberOfParticipant()+1 ) absorption = true;
442 if ( absorption )
443 {
444 //G4cout << "Absorption happend " << G4endl;
445 i = i-1;
446 n = n-1;
447 }
448
449// Collsion allowed (really happened)
450
451 // Unset Projectile/Target flag
452 theSystem->GetParticipant( i )->UnsetInitialMark();
453 if ( !absorption ) theSystem->GetParticipant( j )->UnsetInitialMark();
454
455 theSystem->GetParticipant( i )->SetHitMark();
456 if ( !absorption ) theSystem->GetParticipant( j )->SetHitMark();
457
458 theSystem->IncrementCollisionCounter();
459
460/*
461 std::cout << "G4QMDRESULT Collsion Really Happened between "
462 << i << " and " << j
463 << std::endl;
464 std::cout << "G4QMDRESULT Collsion initial p4 i and j "
465 << p4i << " " << p4j
466 << std::endl;
467 std::cout << "G4QMDRESULT Collsion after p4 i and j "
468 << theSystem->GetParticipant( i )->Get4Momentum()
469 << " "
470 << theSystem->GetParticipant( j )->Get4Momentum()
471 << std::endl;
472 std::cout << "G4QMDRESULT Collsion Diff "
473 << p4i + p4j - theSystem->GetParticipant( i )->Get4Momentum() - theSystem->GetParticipant( j )->Get4Momentum()
474 << std::endl;
475 std::cout << "G4QMDRESULT Collsion initial r i and j "
476 << ri << " " << rj
477 << std::endl;
478 std::cout << "G4QMDRESULT Collsion after r i and j "
479 << theSystem->GetParticipant( i )->GetPosition()
480 << " "
481 << theSystem->GetParticipant( j )->GetPosition()
482 << std::endl;
483*/
484
485
486 }
487
488 }
489
490 }
491
492
493}
494
495
496
497G4bool G4QMDCollision::CalFinalStateOfTheBinaryCollision( G4int i , G4int j )
498{
499
500//081103
501 //G4cout << "CalFinalStateOfTheBinaryCollision " << i << " " << j << " " << theSystem->GetTotalNumberOfParticipant() << G4endl;
502
503 G4bool result = false;
504 G4bool energyOK = false;
505 G4bool pauliOK = false;
506 G4bool abs = false;
507 G4QMDParticipant* absorbed = NULL;
508
509 G4LorentzVector p4i = theSystem->GetParticipant( i )->Get4Momentum();
510 G4LorentzVector p4j = theSystem->GetParticipant( j )->Get4Momentum();
511
512//071031
513
514 G4double epot = theMeanField->GetTotalPotential();
515
516 G4double eini = epot + p4i.e() + p4j.e();
517
518//071031
519 // will use KineticTrack
520 G4ParticleDefinition* pdi0 =theSystem->GetParticipant( i )->GetDefinition();
521 G4ParticleDefinition* pdj0 =theSystem->GetParticipant( j )->GetDefinition();
522 G4LorentzVector p4i0 = p4i*GeV;
523 G4LorentzVector p4j0 = p4j*GeV;
524 G4ThreeVector ri0 = ( theSystem->GetParticipant( i )->GetPosition() )*fermi;
525 G4ThreeVector rj0 = ( theSystem->GetParticipant( j )->GetPosition() )*fermi;
526
527 for ( G4int iitry = 0 ; iitry < 4 ; iitry++ )
528 {
529
530 abs = false;
531
532 G4KineticTrack kt1( pdi0 , 0.0 , ri0 , p4i0 );
533 G4KineticTrack kt2( pdj0 , 0.0 , rj0 , p4j0 );
534
535 G4LorentzVector p4ix_new;
536 G4LorentzVector p4jx_new;
537 G4KineticTrackVector* secs = NULL;
538 secs = theScatterer->Scatter( kt1 , kt2 );
539
540 //std::cout << "G4QMDSCATTERER BEFORE " << kt1.GetDefinition()->GetParticleName() << " " << kt1.Get4Momentum()/GeV << " " << kt1.GetPosition()/fermi << std::endl;
541 //std::cout << "G4QMDSCATTERER BEFORE " << kt2.GetDefinition()->GetParticleName() << " " << kt2.Get4Momentum()/GeV << " " << kt2.GetPosition()/fermi << std::endl;
542 //std::cout << "THESCATTERER " << theScatterer->GetCrossSection ( kt1 , kt2 )/millibarn << " " << elastic << " " << sig << std::endl;
543
544
545 if ( secs )
546 {
547 G4int iti = 0;
548 if ( secs->size() == 2 )
549 {
550 for ( G4KineticTrackVector::iterator it
551 = secs->begin() ; it != secs->end() ; it++ )
552 {
553 if ( iti == 0 )
554 {
555 theSystem->GetParticipant( i )->SetDefinition( (*it)->GetDefinition() );
556 p4ix_new = (*it)->Get4Momentum()/GeV;
557 //std::cout << "THESCATTERER " << (*it)->GetDefinition()->GetParticleName() << std::endl;
558 theSystem->GetParticipant( i )->SetMomentum( p4ix_new.v() );
559 }
560 if ( iti == 1 )
561 {
562 theSystem->GetParticipant( j )->SetDefinition( (*it)->GetDefinition() );
563 p4jx_new = (*it)->Get4Momentum()/GeV;
564 //std::cout << "THESCATTERER " << p4jx_new.e()-p4jx_new.m() << std::endl;
565 theSystem->GetParticipant( j )->SetMomentum( p4jx_new.v() );
566 }
567 //std::cout << "G4QMDSCATTERER AFTER " << (*it)->GetDefinition()->GetParticleName() << " " << (*it)->Get4Momentum()/GeV << std::endl;
568 iti++;
569 }
570 }
571 else if ( secs->size() == 1 )
572 {
573//081118
574 abs = true;
575 //G4cout << "G4QMDCollision pion absrorption " << secs->front()->GetDefinition()->GetParticleName() << G4endl;
576 //secs->front()->Decay();
577 theSystem->GetParticipant( i )->SetDefinition( secs->front()->GetDefinition() );
578 p4ix_new = secs->front()->Get4Momentum()/GeV;
579 theSystem->GetParticipant( i )->SetMomentum( p4ix_new.v() );
580
581 }
582
583//081118
584 if ( secs->size() > 2 )
585 {
586
587 G4cout << "G4QMDCollision secs size > 2; " << secs->size() << G4endl;
588
589 for ( G4KineticTrackVector::iterator it
590 = secs->begin() ; it != secs->end() ; it++ )
591 {
592 G4cout << "G4QMDSCATTERER AFTER " << (*it)->GetDefinition()->GetParticleName() << " " << (*it)->Get4Momentum()/GeV << G4endl;
593 }
594
595 }
596
597 // deleteing KineticTrack
598 for ( G4KineticTrackVector::iterator it
599 = secs->begin() ; it != secs->end() ; it++ )
600 {
601 delete *it;
602 }
603
604 delete secs;
605 }
606//071031
607
608 if ( !abs )
609 {
610 theMeanField->Cal2BodyQuantities( i );
611 theMeanField->Cal2BodyQuantities( j );
612 }
613 else
614 {
615 absorbed = theSystem->EraseParticipant( j );
616 theMeanField->Update();
617 }
618
619 epot = theMeanField->GetTotalPotential();
620
621 G4double efin = epot + p4ix_new.e() + p4jx_new.e();
622
623 //std::cout << "Collision NEW epot " << i << " " << j << " " << epot << " " << std::abs ( eini - efin ) - epse << std::endl;
624
625/*
626 std::cout << "Collision efin " << i << " " << j << " " << efin << std::endl;
627 std::cout << "Collision " << i << " " << j << " " << std::abs ( eini - efin ) << " " << epse << std::endl;
628 std::cout << "Collision " << std::abs ( eini - efin ) << " " << epse << std::endl;
629*/
630
631//071031
632 if ( std::abs ( eini - efin ) < epse )
633 {
634 // Collison OK
635 //std::cout << "collisions6" << std::endl;
636 //std::cout << "collisions before " << p4i << " " << p4j << std::endl;
637 //std::cout << "collisions after " << theSystem->GetParticipant( i )->Get4Momentum() << " " << theSystem->GetParticipant( j )->Get4Momentum() << std::endl;
638 //std::cout << "collisions dif " << ( p4i + p4j ) - ( theSystem->GetParticipant( i )->Get4Momentum() + theSystem->GetParticipant( j )->Get4Momentum() ) << std::endl;
639 //std::cout << "collisions before " << ri0/fermi << " " << rj0/fermi << std::endl;
640 //std::cout << "collisions after " << theSystem->GetParticipant( i )->GetPosition() << " " << theSystem->GetParticipant( j )->GetPosition() << std::endl;
641 energyOK = true;
642 break;
643 }
644 else
645 {
646 //G4cout << "Energy Not OK " << G4endl;
647 if ( abs )
648 {
649 //G4cout << "TKDB reinsert j " << G4endl;
650 theSystem->InsertParticipant( absorbed , j );
651 theMeanField->Update();
652 }
653 // do not need reinsert in no absroption case
654 }
655//071031
656 }
657
658// Energetically forbidden collision
659
660 if ( energyOK )
661 {
662 // Pauli Check
663 //G4cout << "Pauli Checking " << theSystem->GetTotalNumberOfParticipant() << G4endl;
664 if ( !abs )
665 {
666 if ( !( theMeanField->IsPauliBlocked ( i ) == true || theMeanField->IsPauliBlocked ( j ) == true ) )
667 {
668 //G4cout << "Binary Collision Happen " << theSystem->GetTotalNumberOfParticipant() << G4endl;
669 pauliOK = true;
670 }
671 }
672 else
673 {
674 //if ( theMeanField->IsPauliBlocked ( i ) == false )
675 //090126 i-1 cause jth is erased
676 if ( theMeanField->IsPauliBlocked ( i-1 ) == false )
677 {
678 //G4cout << "Absorption Happen " << theSystem->GetTotalNumberOfParticipant() << G4endl;
679 delete absorbed;
680 pauliOK = true;
681 }
682 }
683
684
685 if ( pauliOK )
686 {
687 result = true;
688 }
689 else
690 {
691 //G4cout << "Pauli Blocked" << G4endl;
692 if ( abs )
693 {
694 //G4cout << "TKDB reinsert j pauli block" << G4endl;
695 theSystem->InsertParticipant( absorbed , j );
696 theMeanField->Update();
697 }
698 }
699 }
700
701 return result;
702
703}
704
705
706
707G4bool G4QMDCollision::CalFinalStateOfTheBinaryCollisionJQMD( G4double sig , G4double cutoff , G4ThreeVector pcm , G4double prcm , G4double srt , G4ThreeVector beta , G4double gamma , G4int i , G4int j )
708{
709
710 //G4cout << "CalFinalStateOfTheBinaryCollisionJQMD" << G4endl;
711
712 G4bool result = true;
713
714 G4LorentzVector p4i = theSystem->GetParticipant( i )->Get4Momentum();
715 G4double rmi = theSystem->GetParticipant( i )->GetMass();
716 G4int zi = theSystem->GetParticipant( i )->GetChargeInUnitOfEplus();
717
718 G4LorentzVector p4j = theSystem->GetParticipant( j )->Get4Momentum();
719 G4double rmj = theSystem->GetParticipant( j )->GetMass();
720 G4int zj = theSystem->GetParticipant( j )->GetChargeInUnitOfEplus();
721
722 G4double pr = prcm;
723
724 G4double c2 = pcm.z()/pr;
725
726 G4double csrt = srt - cutoff;
727
728 //G4double pri = prcm;
729 //G4double prf = sqrt ( 0.25 * srt*srt -rm2 );
730
731 G4double asrt = srt - rmi - rmj;
732 G4double pra = prcm;
733
734
735
736 G4double elastic = 0.0;
737
738 if ( zi == zj )
739 {
740 if ( csrt < 0.4286 )
741 {
742 elastic = 35.0 / ( 1. + csrt * 100.0 ) + 20.0;
743 }
744 else
745 {
746 elastic = ( - std::atan( ( csrt - 0.4286 ) * 1.5 - 0.8 )
747 * 2. / pi + 1.0 ) * 9.65 + 7.0;
748 }
749 }
750 else
751 {
752 if ( csrt < 0.4286 )
753 {
754 elastic = 28.0 / ( 1. + csrt * 100.0 ) + 27.0;
755 }
756 else
757 {
758 elastic = ( - std::atan( ( csrt - 0.4286 ) * 1.5 - 0.8 )
759 * 2. / pi + 1.0 ) * 12.34 + 10.0;
760 }
761 }
762
763// std::cout << "Collision csrt " << i << " " << j << " " << csrt << std::endl;
764// std::cout << "Collision elstic " << i << " " << j << " " << elastic << std::endl;
765
766
767// std::cout << "Collision sig " << i << " " << j << " " << sig << std::endl;
768 if ( G4UniformRand() > elastic / sig )
769 {
770 //std::cout << "Inelastic " << std::endl;
771 //std::cout << "elastic/sig " << elastic/sig << std::endl;
772 return result;
773 }
774 else
775 {
776 //std::cout << "Elastic " << std::endl;
777 }
778// std::cout << "Collision ELSTIC " << i << " " << j << std::endl;
779
780
781 G4double as = std::pow ( 3.65 * asrt , 6 );
782 G4double a = 6.0 * as / (1.0 + as);
783 G4double ta = -2.0 * pra*pra;
784 G4double x = G4UniformRand();
785 G4double t1 = std::log( (1-x) * std::exp(2.*a*ta) + x ) / a;
786 G4double c1 = 1.0 - t1/ta;
787
788 if( std::abs(c1) > 1.0 ) c1 = 2.0 * x - 1.0;
789
790/*
791 std::cout << "Collision as " << i << " " << j << " " << as << std::endl;
792 std::cout << "Collision a " << i << " " << j << " " << a << std::endl;
793 std::cout << "Collision ta " << i << " " << j << " " << ta << std::endl;
794 std::cout << "Collision x " << i << " " << j << " " << x << std::endl;
795 std::cout << "Collision t1 " << i << " " << j << " " << t1 << std::endl;
796 std::cout << "Collision c1 " << i << " " << j << " " << c1 << std::endl;
797*/
798 t1 = 2.0*pi*G4UniformRand();
799// std::cout << "Collision t1 " << i << " " << j << " " << t1 << std::endl;
800 G4double t2 = 0.0;
801 if ( pcm.x() == 0.0 && pcm.y() == 0 )
802 {
803 t2 = 0.0;
804 }
805 else
806 {
807 t2 = std::atan2( pcm.y() , pcm.x() );
808 }
809// std::cout << "Collision t2 " << i << " " << j << " " << t2 << std::endl;
810
811 G4double s1 = std::sqrt ( 1.0 - c1*c1 );
812 G4double s2 = std::sqrt ( 1.0 - c2*c2 );
813
814 G4double ct1 = std::cos(t1);
815 G4double st1 = std::sin(t1);
816
817 G4double ct2 = std::cos(t2);
818 G4double st2 = std::sin(t2);
819
820 G4double ss = c2*s1*ct1 + s2*c1;
821
822 pcm.setX( pr * ( ss*ct2 - s1*st1*st2) );
823 pcm.setY( pr * ( ss*st2 + s1*st1*ct2) );
824 pcm.setZ( pr * ( c1*c2 - s1*s2*ct1) );
825
826// std::cout << "Collision pcm " << i << " " << j << " " << pcm << std::endl;
827
828 G4double epot = theMeanField->GetTotalPotential();
829
830 G4double eini = epot + p4i.e() + p4j.e();
831 G4double etwo = p4i.e() + p4j.e();
832
833/*
834 std::cout << "Collision epot " << i << " " << j << " " << epot << std::endl;
835 std::cout << "Collision eini " << i << " " << j << " " << eini << std::endl;
836 std::cout << "Collision etwo " << i << " " << j << " " << etwo << std::endl;
837*/
838
839
840 for ( G4int itry = 0 ; itry < 4 ; itry++ )
841 {
842
843 G4double eicm = std::sqrt ( rmi*rmi + pcm*pcm );
844 G4double pibeta = pcm*beta;
845
846 G4double trans = gamma * ( gamma * pibeta / ( gamma + 1 ) + eicm );
847
848 G4ThreeVector pi_new = beta*trans + pcm;
849
850 G4double ejcm = std::sqrt ( rmj*rmj + pcm*pcm );
851 trans = gamma * ( gamma * pibeta / ( gamma + 1 ) + ejcm );
852
853 G4ThreeVector pj_new = beta*trans - pcm;
854
855//
856// Delete old
857// Add new Particitipants
858//
859// Now only change momentum ( Beacuse we only have elastic sctter of nucleon
860// In future Definition also will be change
861//
862
863 theSystem->GetParticipant( i )->SetMomentum( pi_new );
864 theSystem->GetParticipant( j )->SetMomentum( pj_new );
865
866 G4double pi_new_e = (theSystem->GetParticipant( i )->Get4Momentum()).e();
867 G4double pj_new_e = (theSystem->GetParticipant( j )->Get4Momentum()).e();
868
869 theMeanField->Cal2BodyQuantities( i );
870 theMeanField->Cal2BodyQuantities( j );
871
872 epot = theMeanField->GetTotalPotential();
873
874 G4double efin = epot + pi_new_e + pj_new_e ;
875
876 //std::cout << "Collision NEW epot " << i << " " << j << " " << epot << " " << std::abs ( eini - efin ) - epse << std::endl;
877/*
878 std::cout << "Collision efin " << i << " " << j << " " << efin << std::endl;
879 std::cout << "Collision " << i << " " << j << " " << std::abs ( eini - efin ) << " " << epse << std::endl;
880 std::cout << "Collision " << std::abs ( eini - efin ) << " " << epse << std::endl;
881*/
882
883//071031
884 if ( std::abs ( eini - efin ) < epse )
885 {
886 // Collison OK
887 //std::cout << "collisions6" << std::endl;
888 //std::cout << "collisions before " << p4i << " " << p4j << std::endl;
889 //std::cout << "collisions after " << theSystem->GetParticipant( i )->Get4Momentum() << " " << theSystem->GetParticipant( j )->Get4Momentum() << std::endl;
890 //std::cout << "collisions dif " << ( p4i + p4j ) - ( theSystem->GetParticipant( i )->Get4Momentum() + theSystem->GetParticipant( j )->Get4Momentum() ) << std::endl;
891 //std::cout << "collisions before " << rix/fermi << " " << rjx/fermi << std::endl;
892 //std::cout << "collisions after " << theSystem->GetParticipant( i )->GetPosition() << " " << theSystem->GetParticipant( j )->GetPosition() << std::endl;
893 }
894//071031
895
896 if ( std::abs ( eini - efin ) < epse ) return result; // Collison OK
897
898 G4double cona = ( eini - efin + etwo ) / gamma;
899 G4double fac2 = 1.0 / ( 4.0 * cona*cona * pr*pr ) *
900 ( ( cona*cona - ( rmi*rmi + rmj*rmj ) )*( cona*cona - ( rmi*rmi + rmj*rmj ) )
901 - 4.0 * rmi*rmi * rmj*rmj );
902
903 if ( fac2 > 0 )
904 {
905 G4double fact = std::sqrt ( fac2 );
906 pcm = fact*pcm;
907 }
908
909
910 }
911
912// Energetically forbidden collision
913 result = false;
914
915 return result;
916
917}
G4double
double G4double
Definition: G4Types.hh:64
G4int
int G4int
Definition: G4Types.hh:66
G4bool
bool G4bool
Definition: G4Types.hh:67
G4endl
#define G4endl
Definition: G4ios.hh:52
G4cout
G4DLLIMPORT std::ostream G4cout
G4UniformRand
#define G4UniformRand()
Definition: Randomize.hh:53
CLHEP::Hep3Vector::z
double z() const
CLHEP::Hep3Vector::x
double x() const
CLHEP::Hep3Vector::setY
void setY(double)
CLHEP::Hep3Vector::y
double y() const
CLHEP::Hep3Vector::setZ
void setZ(double)
CLHEP::Hep3Vector::mag
double mag() const
CLHEP::Hep3Vector::setX
void setX(double)
CLHEP::HepLorentzVector::boost
HepLorentzVector & boost(double, double, double)
Definition: LorentzVector.cc:59
CLHEP::HepLorentzVector::vect
Hep3Vector vect() const
CLHEP::HepLorentzVector::v
Hep3Vector v() const
CLHEP::HepLorentzVector::findBoostToCM
Hep3Vector findBoostToCM() const
Definition: LorentzVectorK.cc:223
G4KineticTrack::Decay
G4KineticTrackVector * Decay()
Definition: G4KineticTrack.cc:483
G4QMDCollision::CalFinalStateOfTheBinaryCollisionJQMD
G4bool CalFinalStateOfTheBinaryCollisionJQMD(G4double, G4double, G4ThreeVector, G4double, G4double, G4ThreeVector, G4double, G4int, G4int)
Definition: G4QMDCollision.cc:707
G4QMDCollision::CalKinematicsOfBinaryCollisions
void CalKinematicsOfBinaryCollisions(G4double)
Definition: G4QMDCollision.cc:59
G4QMDCollision::CalFinalStateOfTheBinaryCollision
G4bool CalFinalStateOfTheBinaryCollision(G4int, G4int)
Definition: G4QMDCollision.cc:497
G4QMDMeanField::GetTotalPotential
G4double GetTotalPotential()
Definition: G4QMDMeanField.cc:507
G4QMDMeanField::Cal2BodyQuantities
void Cal2BodyQuantities()
Definition: G4QMDMeanField.cc:148
G4QMDMeanField::GetRR2
G4double GetRR2(G4int i, G4int j)
Definition: G4QMDMeanField.hh:68
G4QMDMeanField::IsPauliBlocked
G4bool IsPauliBlocked(G4int)
Definition: G4QMDMeanField.cc:602
G4QMDParticipant::GetPosition
G4ThreeVector GetPosition()
Definition: G4QMDParticipant.hh:59
G4QMDParticipant::GetDefinition
G4ParticleDefinition * GetDefinition()
Definition: G4QMDParticipant.hh:56
G4QMDParticipant::SetPosition
void SetPosition(G4ThreeVector r)
Definition: G4QMDParticipant.hh:58
G4QMDParticipant::Get4Momentum
G4LorentzVector Get4Momentum()
Definition: G4QMDParticipant.cc:48
G4QMDParticipant::GetChargeInUnitOfEplus
G4int GetChargeInUnitOfEplus()
Definition: G4QMDParticipant.hh:73
G4QMDParticipant::GetMomentum
G4ThreeVector GetMomentum()
Definition: G4QMDParticipant.hh:62
G4QMDParticipant::SetDefinition
void SetDefinition(G4ParticleDefinition *pd)
Definition: G4QMDParticipant.hh:55
G4QMDParticipant::SetMomentum
void SetMomentum(G4ThreeVector p)
Definition: G4QMDParticipant.hh:61
G4QMDSystem::InsertParticipant
void InsertParticipant(G4QMDParticipant *particle, G4int j)
Definition: G4QMDSystem.cc:104
G4QMDSystem::GetParticipant
G4QMDParticipant * GetParticipant(G4int i)
Definition: G4QMDSystem.hh:62
G4QMDSystem::GetTotalNumberOfParticipant
G4int GetTotalNumberOfParticipant()
Definition: G4QMDSystem.hh:60
G4QMDSystem::DeleteParticipant
void DeleteParticipant(G4int i)
Definition: G4QMDSystem.hh:57
G4QMDSystem::SetParticipant
void SetParticipant(G4QMDParticipant *particle)
Definition: G4QMDSystem.hh:51
G4QMDSystem::IncrementCollisionCounter
void IncrementCollisionCounter()
Definition: G4QMDSystem.hh:64
G4QMDSystem::EraseParticipant
G4QMDParticipant * EraseParticipant(G4int i)
Definition: G4QMDSystem.hh:56
G4Scatterer::Scatter
virtual G4KineticTrackVector * Scatter(const G4KineticTrack &trk1, const G4KineticTrack &trk2)
Definition: G4Scatterer.cc:263