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