CustomPhysics/src/FullModelHadronicProcess.cc

0001 #include "G4ProcessManager.hh"
0002 #include "G4ParticleTable.hh"
0003 #include "G4HadronicException.hh"
0004
0005 #include "SimG4Core/CustomPhysics/interface/FullModelHadronicProcess.h"
0006 #include "SimG4Core/CustomPhysics/interface/G4ProcessHelper.h"
0007 #include "SimG4Core/CustomPhysics/interface/Decay3Body.h"
0008 #include "SimG4Core/CustomPhysics/interface/CustomPDGParser.h"
0009 #include "SimG4Core/CustomPhysics/interface/CustomParticle.h"
0010
0011 using namespace CLHEP;
0012
0013 FullModelHadronicProcess::FullModelHadronicProcess(G4ProcessHelper* aHelper, const G4String& processName)
0014     : G4VDiscreteProcess(processName), theHelper(aHelper) {}
0015
0016 FullModelHadronicProcess::~FullModelHadronicProcess() {}
0017
0018 G4bool FullModelHadronicProcess::IsApplicable(const G4ParticleDefinition& aP) {
0019   return theHelper->ApplicabilityTester(aP);
0020 }
0021
0022 G4double FullModelHadronicProcess::GetMicroscopicCrossSection(const G4DynamicParticle* aParticle,
0023                                                               const G4Element* anElement,
0024                                                               G4double aTemp) {
0025   //Get the cross section for this particle/element combination from the ProcessHelper
0026   G4double InclXsec = theHelper->GetInclusiveCrossSection(aParticle, anElement);
0027   //  G4cout<<"Returned cross section from helper was: "<<InclXsec/millibarn<<" millibarn"<<G4endl;
0028   return InclXsec;
0029 }
0030
0031 G4double FullModelHadronicProcess::GetMeanFreePath(const G4Track& aTrack, G4double, G4ForceCondition*) {
0032   G4Material* aMaterial = aTrack.GetMaterial();
0033   const G4DynamicParticle* aParticle = aTrack.GetDynamicParticle();
0034   G4double sigma = 0.0;
0035
0036   G4int nElements = aMaterial->GetNumberOfElements();
0037
0038   const G4double* theAtomicNumDensityVector = aMaterial->GetAtomicNumDensityVector();
0039   G4double aTemp = aMaterial->GetTemperature();
0040
0041   for (G4int i = 0; i < nElements; ++i) {
0042     G4double xSection = GetMicroscopicCrossSection(aParticle, (*aMaterial->GetElementVector())[i], aTemp);
0043     sigma += theAtomicNumDensityVector[i] * xSection;
0044   }
0045   G4double res = DBL_MAX;
0046   if (sigma > 0.0) {
0047     res = 1. / sigma;
0048   }
0049   return res;
0050 }
0051
0052 G4VParticleChange* FullModelHadronicProcess::PostStepDoIt(const G4Track& aTrack, const G4Step& aStep) {
0053   //  G4cout<<"**** Entering FullModelHadronicProcess::PostStepDoIt       ******"<<G4endl;
0054   const G4TouchableHandle& thisTouchable(aTrack.GetTouchableHandle());
0055
0056   // A little setting up
0057   aParticleChange.Initialize(aTrack);
0058   const G4DynamicParticle* IncidentRhadron = aTrack.GetDynamicParticle();
0059   CustomParticle* CustomIncident = static_cast<CustomParticle*>(IncidentRhadron->GetDefinition());
0060   const G4ThreeVector& aPosition = aTrack.GetPosition();
0061   //  G4cout<<"G: "<<aStep.GetStepLength()/cm<<G4endl;
0062   const G4int theIncidentPDG = IncidentRhadron->GetDefinition()->GetPDGEncoding();
0063   G4ParticleTable* theParticleTable = G4ParticleTable::GetParticleTable();
0064   std::vector<G4ParticleDefinition*> theParticleDefinitions;
0065   G4bool IncidentSurvives = false;
0066   G4bool TargetSurvives = false;
0067   G4Nucleus targetNucleus(aTrack.GetMaterial());
0068   G4ParticleDefinition* outgoingRhadron = nullptr;
0069   G4ParticleDefinition* outgoingCloud = nullptr;
0070   G4ParticleDefinition* outgoingTarget = nullptr;
0071
0072   G4ThreeVector p_0 = IncidentRhadron->GetMomentum();
0073   G4double e_kin_0 = IncidentRhadron->GetKineticEnergy();
0074   //  G4cout<<e_kin_0/GeV<<G4endl;
0075
0076   G4DynamicParticle* cloudParticle = new G4DynamicParticle();
0077   /*
0078   if(CustomPDGParser::s_isRMeson(theIncidentPDG))
0079     G4cout<<"Rmeson"<<G4endl;
0080   if(CustomPDGParser::s_isRBaryon(theIncidentPDG))
0081     G4cout<<"Rbaryon"<<G4endl;
0082   */
0083   cloudParticle->SetDefinition(CustomIncident->GetCloud());
0084
0085   if (cloudParticle->GetDefinition() == nullptr) {
0086     G4cout << "FullModelHadronicProcess::PostStepDoIt  Definition of particle cloud not available!!" << G4endl;
0087   }
0088   /*
0089   G4cout<<"Incoming particle was "<<IncidentRhadron->GetDefinition()->GetParticleName()
0090   <<". Corresponding cloud is "<<cloudParticle->GetDefinition()->GetParticleName()<<G4endl;
0091   G4cout<<"Kinetic energy was: "<<IncidentRhadron->GetKineticEnergy()/GeV<<" GeV"<<G4endl;
0092   */
0093   double scale = cloudParticle->GetDefinition()->GetPDGMass() / IncidentRhadron->GetDefinition()->GetPDGMass();
0094   //  G4cout<<"Mass ratio: "<<scale<<G4endl;
0095   G4LorentzVector cloudMomentum(IncidentRhadron->GetMomentum() * scale, cloudParticle->GetDefinition()->GetPDGMass());
0096   G4LorentzVector gluinoMomentum(IncidentRhadron->GetMomentum() * (1. - scale),
0097                                  CustomIncident->GetSpectator()->GetPDGMass());
0098
0099   //These two for getting CMS transforms later (histogramming purposes...)
0100   G4LorentzVector FullRhadron4Momentum = IncidentRhadron->Get4Momentum();
0101   const G4LorentzVector& Cloud4Momentum = cloudMomentum;
0102
0103   cloudParticle->Set4Momentum(cloudMomentum);
0104
0105   G4DynamicParticle* OrgPart = cloudParticle;
0106
0107   /*
0108   G4cout<<"Original momentum: "<<IncidentRhadron->Get4Momentum().v().mag()/GeV
0109   <<" GeV, corresponding to gamma: "
0110   <<IncidentRhadron->GetTotalEnergy()/IncidentRhadron->GetDefinition()->GetPDGMass()<<G4endl;
0111
0112   G4cout<<"Cloud momentum: "<<cloudParticle->Get4Momentum().v().mag()/GeV
0113   <<" GeV, corresponding to gamma: "
0114   <<cloudParticle->GetTotalEnergy()/cloudParticle->GetDefinition()->GetPDGMass()<<G4endl;
0115   */
0116
0117   double E_0 = IncidentRhadron->GetKineticEnergy();
0118   G4double ek = OrgPart->GetKineticEnergy();
0119   G4double amas = OrgPart->GetDefinition()->GetPDGMass();
0120   G4ThreeVector dir = (OrgPart->GetMomentum()).unit();
0121   G4double tkin = targetNucleus.Cinema(ek);
0122   ek += tkin;
0123
0124   // calculate black track energies
0125   tkin = targetNucleus.EvaporationEffects(ek);
0126   ek -= tkin;
0127
0128   if (ek + gluinoMomentum.e() - gluinoMomentum.m() <= 0.1 * MeV || ek <= 0.) {
0129     //Very rare event...
0130     G4cout << "Kinetic energy is sick" << G4endl;
0131     G4cout << "Full R-hadron: " << (ek + gluinoMomentum.e() - gluinoMomentum.m()) / MeV << " MeV" << G4endl;
0132     G4cout << "Quark system: " << ek / MeV << " MeV" << G4endl;
0133     aParticleChange.ProposeTrackStatus(fStopButAlive);  // AR_NEWCODE_IMPORT
0134     return &aParticleChange;
0135   }
0136   OrgPart->SetKineticEnergy(ek);
0137   G4double p = std::sqrt(ek * (ek + 2 * amas));
0138   OrgPart->SetMomentum(dir * p);
0139
0140   //Get the final state particles
0141   G4ParticleDefinition* aTarget;
0142   ReactionProduct rp = theHelper->GetFinalState(aTrack, aTarget);
0143   G4bool force2to2 = false;
0144   //  G4cout<<"Trying to get final state..."<<G4endl;
0145   while (rp.size() != 2 && force2to2) {
0146     rp = theHelper->GetFinalState(aTrack, aTarget);
0147   }
0148   G4int NumberOfSecondaries = rp.size();
0149   //  G4cout<<"Multiplicity of selected final state: "<<rp.size()<<G4endl;
0150
0151   //Getting CMS transforms. Boosting is done at histogram filling
0152   G4LorentzVector Target4Momentum(0., 0., 0., aTarget->GetPDGMass());
0153
0154   G4LorentzVector psum_full = FullRhadron4Momentum + Target4Momentum;
0155   G4LorentzVector psum_cloud = Cloud4Momentum + Target4Momentum;
0156   G4ThreeVector trafo_full_cms = (-1) * psum_full.boostVector();
0157   G4ThreeVector trafo_cloud_cms = (-1) * psum_cloud.boostVector();
0158
0159   // OK Let's make some particles :-)
0160   // We're not using them for anything yet, I know, but let's make sure the machinery is there
0161   for (ReactionProduct::iterator it = rp.begin(); it != rp.end(); ++it) {
0162     G4ParticleDefinition* tempDef = theParticleTable->FindParticle(*it);
0163     CustomParticle* tempCust = dynamic_cast<CustomParticle*>(tempDef);
0164     if (tempDef == aTarget)
0165       TargetSurvives = true;
0166
0167     //      if (tempDef->GetParticleType()=="rhadron")
0168     if (tempCust != nullptr) {
0169       outgoingRhadron = tempDef;
0170       //Setting outgoing cloud definition
0171       outgoingCloud = tempCust->GetCloud();
0172       if (outgoingCloud == nullptr) {
0173         G4cout << "FullModelHadronicProcess::PostStepDoIt  Definition of outgoing particle cloud not available!"
0174                << G4endl;
0175       }
0176       /*
0177     G4cout<<"Outgoing Rhadron is: "<<outgoingRhadron->GetParticleName()<<G4endl;
0178     G4cout<<"Outgoing cloud is: "<<outgoingCloud->GetParticleName()<<G4endl;
0179       */
0180     }
0181
0182     if (tempDef == G4Proton::Proton() || tempDef == G4Neutron::Neutron())
0183       outgoingTarget = tempDef;
0184     if (tempCust == nullptr && rp.size() == 2)
0185       outgoingTarget = tempDef;
0186     if (tempDef->GetPDGEncoding() == theIncidentPDG) {
0187       IncidentSurvives = true;
0188     } else {
0189       theParticleDefinitions.push_back(tempDef);
0190     }
0191   }
0192
0193   if (outgoingTarget == nullptr)
0194     outgoingTarget = theParticleTable->FindParticle(rp[1]);
0195
0196   // A little debug information
0197   /*
0198   G4cout<<"The particles coming out of this reaction will be: ";
0199   for (std::vector<G4DynamicParticle*>::iterator it = theDynamicParticles.begin();
0200        it != theDynamicParticles.end();
0201        it++){
0202     G4cout<< (*it)->GetDefinition()->GetParticleName()<<" ";
0203   }
0204   G4cout<<G4endl;
0205   */
0206   // If the incident particle survives it is not a "secondary", although
0207   // it would probably be easier to fStopAndKill the track every time.
0208   if (IncidentSurvives)
0209     NumberOfSecondaries--;
0210   aParticleChange.SetNumberOfSecondaries(NumberOfSecondaries);
0211
0212   // ADAPTED FROM G4LEPionMinusInelastic::ApplyYourself
0213   // It is bloody ugly, but such is the way of cut 'n' paste
0214
0215   // Set up the incident
0216   // This is where rotation to z-axis is done
0217   const G4HadProjectile* originalIncident = new G4HadProjectile(*OrgPart);
0218
0219   //Maybe I need to calculate trafo from R-hadron... Bollocks! Labframe does not move. CMS does.
0220   G4HadProjectile* org2 = new G4HadProjectile(*OrgPart);
0221   G4LorentzRotation trans = org2->GetTrafoToLab();
0222   delete org2;
0223
0224   // create the target particle
0225
0226   G4DynamicParticle* originalTarget = new G4DynamicParticle;
0227   originalTarget->SetDefinition(aTarget);
0228
0229   G4ReactionProduct targetParticle(aTarget);
0230
0231   G4ReactionProduct currentParticle(const_cast<G4ParticleDefinition*>(originalIncident->GetDefinition()));
0232   currentParticle.SetMomentum(originalIncident->Get4Momentum().vect());
0233   currentParticle.SetKineticEnergy(originalIncident->GetKineticEnergy());
0234
0235   /*
0236   G4cout<<"After creation:"<<G4endl;
0237   G4cout<<"currentParticle: "<<currentParticle.GetMomentum()/GeV<<" GeV vs. "<<OrgPart->Get4Momentum()/GeV<<" GeV"<<G4endl;
0238   G4cout<<"targetParticle: "<<targetParticle.GetMomentum()/GeV<<" GeV"<<G4endl;
0239   G4cout<<"Fourmomentum from originalIncident: "<<originalIncident->Get4Momentum()<<" vs "<<OrgPart->Get4Momentum()<<G4endl;
0240   */
0241
0242   G4ReactionProduct modifiedOriginal = currentParticle;
0243
0244   currentParticle.SetSide(1);  // incident always goes in forward hemisphere
0245   targetParticle.SetSide(-1);  // target always goes in backward hemisphere
0246   G4bool incidentHasChanged = false;
0247   if (!IncidentSurvives)
0248     incidentHasChanged = true;  //I wonder if I am supposed to do this...
0249   G4bool targetHasChanged = false;
0250   if (!TargetSurvives)
0251     targetHasChanged = true;  //Ditto here
0252   G4bool quasiElastic = false;
0253   if (rp.size() == 2)
0254     quasiElastic = true;                                //Oh well...
0255   G4FastVector<G4ReactionProduct, MYGHADLISTSIZE> vec;  // vec will contain the secondary particles
0256   G4int vecLen = 0;
0257   vec.Initialize(0);
0258
0259   // I hope my understanding of "secondary" is correct here
0260   // I think that it entails only what is not a surviving incident of target
0261
0262   for (G4int i = 0; i != NumberOfSecondaries; i++) {
0263     if (theParticleDefinitions[i] != aTarget && theParticleDefinitions[i] != originalIncident->GetDefinition() &&
0264         theParticleDefinitions[i] != outgoingRhadron && theParticleDefinitions[i] != outgoingTarget) {
0265       G4ReactionProduct* pa = new G4ReactionProduct;
0266       pa->SetDefinition(theParticleDefinitions[i]);
0267       (G4UniformRand() < 0.5) ? pa->SetSide(-1) : pa->SetSide(1);
0268       vec.SetElement(vecLen++, pa);
0269     }
0270   }
0271
0272   if (incidentHasChanged)
0273     currentParticle.SetDefinitionAndUpdateE(outgoingCloud);
0274   if (incidentHasChanged)
0275     modifiedOriginal.SetDefinition(
0276         outgoingCloud);  //Is this correct? It solves the "free energy" checking in ReactionDynamics
0277   if (targetHasChanged)
0278     targetParticle.SetDefinitionAndUpdateE(outgoingTarget);
0279
0280   //  G4cout<<"Calling CalculateMomenta... "<<G4endl;
0281   /*
0282   G4cout<<"Current particle starts as: "<<currentParticle.GetDefinition()->GetParticleName()<<G4endl;
0283   G4cout<<"with momentum: "<<currentParticle.GetMomentum()/GeV<<" GeV"<<G4endl;
0284   G4cout<<"May be killed?: "<<currentParticle.GetMayBeKilled()<<G4endl;
0285   */
0286
0287   CalculateMomenta(vec,
0288                    vecLen,
0289                    originalIncident,
0290                    originalTarget,
0291                    modifiedOriginal,
0292                    targetNucleus,
0293                    currentParticle,
0294                    targetParticle,
0295                    incidentHasChanged,
0296                    targetHasChanged,
0297                    quasiElastic);
0298
0299   //  G4cout <<"Cloud loss: "<<(e_temp-currentParticle.GetKineticEnergy())/GeV<<" GeV"<<G4endl;
0300
0301   G4String cPname = currentParticle.GetDefinition()->GetParticleName();
0302
0303   //  if(cPname!="rhadronmesoncloud"&&cPname!="rhadronbaryoncloud")
0304   //    {
0305   /*
0306   G4cout<<"Current particle is now: "<<cPname <<G4endl;
0307   G4cout<<"with momentum: "<<currentParticle.GetMomentum()/GeV<<" GeV"<<G4endl;
0308   G4cout<<"and kinetic energy: "<<currentParticle.GetKineticEnergy()/GeV<<" GeV"<<G4endl;
0309   G4cout<<"May be killed?: "<<currentParticle.GetMayBeKilled()<<G4endl;
0310   G4cout<<"Modified original is: "<<modifiedOriginal.GetDefinition()->GetParticleName()<<G4endl;
0311   G4cout<<"with momentum: "<<modifiedOriginal.GetMomentum()/GeV<<" GeV"<<G4endl;
0312   G4cout<<"and kinetic energy: "<<modifiedOriginal.GetKineticEnergy()/GeV<<" GeV"<<G4endl;
0313   G4cout<<"May be killed?: "<<modifiedOriginal.GetMayBeKilled()<<G4endl;
0314   G4cout<<"Target particle is: "<<targetParticle.GetDefinition()->GetParticleName()<<G4endl;
0315   G4cout<<"with momentum: "<<targetParticle.GetMomentum()/GeV<<" GeV"<<G4endl;
0316   G4cout<<"and kinetic energy: "<<targetParticle.GetKineticEnergy()/GeV<<" GeV"<<G4endl;
0317   G4cout<<"May be killed?: "<<targetParticle.GetMayBeKilled()<<G4endl;
0318   G4cout<<"incidentHasChanged: "<<incidentHasChanged<<G4endl;
0319   G4cout<<"targetHasChanged: "<<targetHasChanged<<G4endl;
0320   G4cout<<"Particles in vec:"<<G4endl;
0321   for(int i=0; i<vecLen; ++i )
0322     {
0323       G4cout<< vec[i]->GetDefinition()->GetParticleName()<<G4endl;
0324     }
0325   */
0326   // G4cout<<"Done!"<<G4endl;
0327
0328   aParticleChange.SetNumberOfSecondaries(vecLen + NumberOfSecondaries);
0329   G4double e_kin = 0;
0330   G4LorentzVector cloud_p4_new;  //Cloud 4-momentum in lab after collision
0331   //  n++;
0332   //  G4cout << n << G4endl;
0333   /*
0334   if(cPname!="rhadronmesoncloud"&&cPname!="rhadronbaryoncloud") {
0335     G4cout<<"Cloud deleted!!! AAARRRRGGGHHH!!!"<<G4endl;
0336     G4cout<<"Cloud name: "<<cPname<<G4endl;
0337     G4cout<<"E_kin_0: "<<e_kin_0/GeV<<" GeV"<<G4endl;
0338     //    G4cout<<"n: "<<n<<G4endl;
0339     //    n=0;
0340   }
0341   */
0342   cloud_p4_new.setVectM(currentParticle.GetMomentum(), currentParticle.GetMass());
0343   cloud_p4_new *= trans;
0344
0345   G4LorentzVector cloud_p4_old_full = Cloud4Momentum;  //quark system in CMS BEFORE collision
0346   cloud_p4_old_full.boost(trafo_full_cms);
0347   G4LorentzVector cloud_p4_old_cloud = Cloud4Momentum;  //quark system in cloud CMS BEFORE collision
0348   cloud_p4_old_cloud.boost(trafo_cloud_cms);
0349   G4LorentzVector cloud_p4_full = cloud_p4_new;  //quark system in CMS AFTER collision
0350   cloud_p4_full.boost(trafo_full_cms);
0351   G4LorentzVector cloud_p4_cloud = cloud_p4_new;  //quark system in cloud CMS AFTER collision
0352   cloud_p4_cloud.boost(trafo_cloud_cms);
0353
0354   G4LorentzVector p_g_cms = gluinoMomentum;  //gluino in CMS BEFORE collision
0355   p_g_cms.boost(trafo_full_cms);
0356
0357   double e = cloud_p4_new.e() + gluinoMomentum.e();
0358   if (outgoingRhadron)
0359     e += outgoingRhadron->GetPDGMass();
0360   G4LorentzVector p4_new(cloud_p4_new.v() + gluinoMomentum.v(), e);
0361   //  G4cout<<"P4-diff: "<<(p4_new-cloud_p4_new-gluinoMomentum)/GeV<<", magnitude: "
0362   // <<(p4_new-cloud_p4_new-gluinoMomentum).m()/MeV<<" MeV" <<G4endl;
0363
0364   G4ThreeVector p_new = p4_new.vect();
0365
0366   aParticleChange.ProposeLocalEnergyDeposit((p4_new - cloud_p4_new - gluinoMomentum).m());
0367
0368   if (incidentHasChanged) {
0369     G4DynamicParticle* p0 = new G4DynamicParticle;
0370     p0->SetDefinition(outgoingRhadron);
0371     p0->SetMomentum(p_new);
0372
0373     // May need to run SetDefinitionAndUpdateE here...
0374     G4Track* Track0 = new G4Track(p0, aTrack.GetGlobalTime(), aPosition);
0375     Track0->SetTouchableHandle(thisTouchable);
0376     aParticleChange.AddSecondary(Track0);
0377     /*
0378       G4cout<<"Adding a particle "<<p0->GetDefinition()->GetParticleName()<<G4endl;
0379       G4cout<<"with momentum: "<<p0->GetMomentum()/GeV<<" GeV"<<G4endl;
0380       G4cout<<"and kinetic energy: "<<p0->GetKineticEnergy()/GeV<<" GeV"<<G4endl;
0381       */
0382     if (p0->GetKineticEnergy() > e_kin_0) {
0383       G4cout << "ALAAAAARM!!! (incident changed from " << IncidentRhadron->GetDefinition()->GetParticleName() << " to "
0384              << p0->GetDefinition()->GetParticleName() << ")" << G4endl;
0385       G4cout << "Energy loss: " << (e_kin_0 - p0->GetKineticEnergy()) / GeV << " GeV (should be positive)" << G4endl;
0386       //Turns out problem is only in 2 -> 3 (Won't fix 2 -> 2 energy deposition)
0387       if (rp.size() != 3)
0388         G4cout << "DOUBLE ALAAAAARM!!!" << G4endl;
0389     } /*else {
0390     G4cout<<"NO ALAAAAARM!!!"<<G4endl;
0391     }*/
0392     if (std::abs(p0->GetKineticEnergy() - e_kin_0) > 100 * GeV) {
0393       G4cout << "Diff. too big" << G4endl;
0394     }
0395     aParticleChange.ProposeTrackStatus(fStopAndKill);
0396   } else {
0397     G4double p = p_new.mag();
0398     if (p > DBL_MIN)
0399       aParticleChange.ProposeMomentumDirection(p_new.x() / p, p_new.y() / p, p_new.z() / p);
0400     else
0401       aParticleChange.ProposeMomentumDirection(1.0, 0.0, 0.0);
0402   }
0403
0404   //    return G4VDiscreteProcess::PostStepDoIt( aTrack, aStep);
0405   if (targetParticle.GetMass() > 0.0)  // targetParticle can be eliminated in TwoBody
0406   {
0407     G4DynamicParticle* p1 = new G4DynamicParticle;
0408     p1->SetDefinition(targetParticle.GetDefinition());
0409     //G4cout<<"Target secondary: "<<targetParticle.GetDefinition()->GetParticleName()<<G4endl;
0410     G4ThreeVector momentum = targetParticle.GetMomentum();
0411     momentum = momentum.rotate(cache, what);
0412     p1->SetMomentum(momentum);
0413     p1->SetMomentum((trans * p1->Get4Momentum()).vect());
0414     G4Track* Track1 = new G4Track(p1, aTrack.GetGlobalTime(), aPosition);
0415     Track1->SetTouchableHandle(thisTouchable);
0416     aParticleChange.AddSecondary(Track1);
0417   }
0418   G4DynamicParticle* pa;
0419   /*
0420     G4cout<<"vecLen: "<<vecLen<<G4endl;
0421     G4cout<<"#sec's: "<<aParticleChange.GetNumberOfSecondaries()<<G4endl;
0422   */
0423
0424   for (int i = 0; i < vecLen; ++i) {
0425     pa = new G4DynamicParticle();
0426     pa->SetDefinition(vec[i]->GetDefinition());
0427     pa->SetMomentum(vec[i]->GetMomentum());
0428     pa->Set4Momentum(trans * (pa->Get4Momentum()));
0429     G4ThreeVector pvec = pa->GetMomentum();
0430     G4Track* Trackn = new G4Track(pa, aTrack.GetGlobalTime(), aPosition);
0431     Trackn->SetTouchableHandle(thisTouchable);
0432     aParticleChange.AddSecondary(Trackn);
0433
0434     delete vec[i];
0435   }
0436
0437   // Histogram filling
0438   const G4DynamicParticle* theRhadron = FindRhadron(&aParticleChange);
0439
0440   if (theRhadron != nullptr || IncidentSurvives) {
0441     double E_new;
0442     if (IncidentSurvives) {
0443       E_new = e_kin;
0444     } else {
0445       E_new = theRhadron->GetKineticEnergy();
0446       if (CustomPDGParser::s_isRMeson(theRhadron->GetDefinition()->GetPDGEncoding()) !=
0447               CustomPDGParser::s_isRMeson(theIncidentPDG) ||
0448           CustomPDGParser::s_isMesonino(theRhadron->GetDefinition()->GetPDGEncoding()) !=
0449               CustomPDGParser::s_isMesonino(theIncidentPDG)) {
0450         G4cout << "Rm: " << CustomPDGParser::s_isRMeson(theRhadron->GetDefinition()->GetPDGEncoding())
0451                << " vs: " << CustomPDGParser::s_isRMeson(theIncidentPDG) << G4endl;
0452         G4cout << "Sm: " << CustomPDGParser::s_isMesonino(theRhadron->GetDefinition()->GetPDGEncoding())
0453                << " vs: " << CustomPDGParser::s_isMesonino(theIncidentPDG) << G4endl;
0454       }
0455     }
0456
0457     //Calculating relevant scattering angles.
0458     G4LorentzVector p4_old_full = FullRhadron4Momentum;  //R-hadron in CMS BEFORE collision
0459     p4_old_full.boost(trafo_full_cms);
0460     G4LorentzVector p4_old_cloud = FullRhadron4Momentum;  //R-hadron in cloud CMS BEFORE collision
0461     p4_old_cloud.boost(trafo_cloud_cms);
0462     G4LorentzVector p4_full = p4_new;  //R-hadron in CMS AFTER collision
0463     //      G4cout<<p4_full.v()/GeV<<G4endl;
0464     p4_full = p4_full.boost(trafo_full_cms);
0465     // G4cout<<p4_full.m()<<" / "<<(cloud_p4_new+gluinoMomentum).boost(trafo_full_cms).m()<<G4endl;
0466     G4LorentzVector p4_cloud = p4_new;  //R-hadron in cloud CMS AFTER collision
0467     p4_cloud.boost(trafo_cloud_cms);
0468
0469     G4double AbsDeltaE = E_0 - E_new;
0470     //      G4cout <<"Energy loss: "<<AbsDeltaE/GeV<<G4endl;
0471     if (AbsDeltaE > 10 * GeV) {
0472       G4cout << "Energy loss larger than 10 GeV..." << G4endl;
0473       G4cout << "E_0: " << E_0 / GeV << " GeV" << G4endl;
0474       G4cout << "E_new: " << E_new / GeV << " GeV" << G4endl;
0475       G4cout << "Gamma: " << IncidentRhadron->GetTotalEnergy() / IncidentRhadron->GetDefinition()->GetPDGMass()
0476              << G4endl;
0477       G4cout << "x: " << aPosition.x() / cm << " cm" << G4endl;
0478     }
0479   }
0480   delete originalIncident;
0481   delete originalTarget;
0482   //  aParticleChange.DumpInfo();
0483   //  G4cout << "Exiting FullModelHadronicProcess::PostStepDoIt"<<G4endl;
0484
0485   //clear interaction length
0486   ClearNumberOfInteractionLengthLeft();
0487
0488   return &aParticleChange;
0489 }
0490
0491 void FullModelHadronicProcess::CalculateMomenta(
0492     G4FastVector<G4ReactionProduct, MYGHADLISTSIZE>& vec,
0493     G4int& vecLen,
0494     const G4HadProjectile* originalIncident,  // the original incident particle
0495     const G4DynamicParticle* originalTarget,
0496     G4ReactionProduct& modifiedOriginal,  // Fermi motion and evap. effects included
0497     G4Nucleus& targetNucleus,
0498     G4ReactionProduct& currentParticle,
0499     G4ReactionProduct& targetParticle,
0500     G4bool& incidentHasChanged,
0501     G4bool& targetHasChanged,
0502     G4bool quasiElastic) {
0503   FullModelReactionDynamics theReactionDynamics;
0504
0505   cache = 0;
0506   what = originalIncident->Get4Momentum().vect();
0507
0508   if (quasiElastic) {
0509     //      G4cout<<"We are calling TwoBody..."<<G4endl;
0510     theReactionDynamics.TwoBody(
0511         vec, vecLen, modifiedOriginal, originalTarget, currentParticle, targetParticle, targetNucleus, targetHasChanged);
0512
0513     return;
0514   }
0515
0516   //If ProduceStrangeParticlePairs is commented out, let's cut this one as well
0517   G4ReactionProduct leadingStrangeParticle;
0518   G4bool leadFlag = MarkLeadingStrangeParticle(currentParticle, targetParticle, leadingStrangeParticle);
0519
0520   //
0521   // Note: the number of secondaries can be reduced in GenerateXandPt and TwoCluster
0522   //
0523   G4bool finishedGenXPt = false;
0524   G4bool annihilation = false;
0525   if (originalIncident->GetDefinition()->GetPDGEncoding() < 0 && currentParticle.GetMass() == 0.0 &&
0526       targetParticle.GetMass() == 0.0) {
0527     // original was an anti-particle and annihilation has taken place
0528     annihilation = true;
0529     G4double ekcor = 1.0;
0530     G4double ek = originalIncident->GetKineticEnergy();
0531     G4double ekOrg = ek;
0532
0533     const G4double tarmas = originalTarget->GetDefinition()->GetPDGMass();
0534     if (ek > 1.0 * GeV)
0535       ekcor = 1. / (ek / GeV);
0536     const G4double atomicWeight = G4double(targetNucleus.GetN_asInt());
0537     ek = 2 * tarmas + ek * (1. + ekcor / atomicWeight);
0538
0539     G4double tkin = targetNucleus.Cinema(ek);
0540     //ek += tkin;
0541     ekOrg += tkin;
0542     modifiedOriginal.SetKineticEnergy(ekOrg);
0543   }
0544
0545   const G4double twsup[] = {1.0, 0.7, 0.5, 0.3, 0.2, 0.1};
0546   G4double rand1 = G4UniformRand();
0547   G4double rand2 = G4UniformRand();
0548   if ((annihilation || (vecLen >= 6) || (modifiedOriginal.GetKineticEnergy() / GeV >= 1.0)) &&
0549       (((originalIncident->GetDefinition() == G4KaonPlus::KaonPlus()) ||
0550         (originalIncident->GetDefinition() == G4KaonMinus::KaonMinus()) ||
0551         (originalIncident->GetDefinition() == G4KaonZeroLong::KaonZeroLong()) ||
0552         (originalIncident->GetDefinition() == G4KaonZeroShort::KaonZeroShort())) &&
0553        ((rand1 < 0.5) || (rand2 > twsup[vecLen]))))
0554     finishedGenXPt = theReactionDynamics.GenerateXandPt(vec,
0555                                                         vecLen,
0556                                                         modifiedOriginal,
0557                                                         originalIncident,
0558                                                         currentParticle,
0559                                                         targetParticle,
0560                                                         targetNucleus,
0561                                                         incidentHasChanged,
0562                                                         targetHasChanged,
0563                                                         leadFlag,
0564                                                         leadingStrangeParticle);
0565   if (finishedGenXPt) {
0566     Rotate(vec, vecLen);
0567     return;
0568   }
0569
0570   G4bool finishedTwoClu = false;
0571   if (modifiedOriginal.GetTotalMomentum() / MeV < 1.0) {
0572     for (G4int i = 0; i < vecLen; i++)
0573       delete vec[i];
0574     vecLen = 0;
0575   } else {
0576     theReactionDynamics.SuppressChargedPions(vec,
0577                                              vecLen,
0578                                              modifiedOriginal,
0579                                              currentParticle,
0580                                              targetParticle,
0581                                              targetNucleus,
0582                                              incidentHasChanged,
0583                                              targetHasChanged);
0584
0585     try {
0586       finishedTwoClu = theReactionDynamics.TwoCluster(vec,
0587                                                       vecLen,
0588                                                       modifiedOriginal,
0589                                                       originalIncident,
0590                                                       currentParticle,
0591                                                       targetParticle,
0592                                                       targetNucleus,
0593                                                       incidentHasChanged,
0594                                                       targetHasChanged,
0595                                                       leadFlag,
0596                                                       leadingStrangeParticle);
0597     } catch (G4HadronicException& aR) {
0598       G4ExceptionDescription ed;
0599       aR.Report(ed);
0600       G4Exception("FullModelHadronicProcess::CalculateMomenta", "had066", FatalException, ed);
0601     }
0602   }
0603   if (finishedTwoClu) {
0604     Rotate(vec, vecLen);
0605     return;
0606   }
0607
0608   //
0609   // PNBlackTrackEnergy is the kinetic energy available for
0610   //   proton/neutron black track particles [was enp(1) in fortran code]
0611   // DTABlackTrackEnergy is the kinetic energy available for
0612   //   deuteron/triton/alpha particles      [was enp(3) in fortran code]
0613   // the atomic weight of the target nucleus is >= 1.5            AND
0614   //   neither the incident nor the target particles have changed  AND
0615   //     there is no kinetic energy available for either proton/neutron
0616   //     or for deuteron/triton/alpha black track particles
0617   // For diffraction scattering on heavy nuclei use elastic routines instead
0618
0619   theReactionDynamics.TwoBody(
0620       vec, vecLen, modifiedOriginal, originalTarget, currentParticle, targetParticle, targetNucleus, targetHasChanged);
0621 }
0622
0623 G4bool FullModelHadronicProcess::MarkLeadingStrangeParticle(const G4ReactionProduct& currentParticle,
0624                                                             const G4ReactionProduct& targetParticle,
0625                                                             G4ReactionProduct& leadParticle) {
0626   // the following was in GenerateXandPt and TwoCluster
0627   // add a parameter to the GenerateXandPt function telling it about the strange particle
0628   //
0629   // assumes that the original particle was a strange particle
0630   //
0631   G4bool lead = false;
0632   if ((currentParticle.GetMass() >= G4KaonPlus::KaonPlus()->GetPDGMass()) &&
0633       (currentParticle.GetDefinition() != G4Proton::Proton()) &&
0634       (currentParticle.GetDefinition() != G4Neutron::Neutron())) {
0635     lead = true;
0636     leadParticle = currentParticle;  //  set lead to the incident particle
0637   } else if ((targetParticle.GetMass() >= G4KaonPlus::KaonPlus()->GetPDGMass()) &&
0638              (targetParticle.GetDefinition() != G4Proton::Proton()) &&
0639              (targetParticle.GetDefinition() != G4Neutron::Neutron())) {
0640     lead = true;
0641     leadParticle = targetParticle;  //   set lead to the target particle
0642   }
0643   return lead;
0644 }
0645
0646 void FullModelHadronicProcess::Rotate(G4FastVector<G4ReactionProduct, MYGHADLISTSIZE>& vec, G4int& vecLen) {
0647   G4double rotation = 2. * pi * G4UniformRand();
0648   cache = rotation;
0649   G4int i;
0650   for (i = 0; i < vecLen; ++i) {
0651     G4ThreeVector momentum = vec[i]->GetMomentum();
0652     momentum = momentum.rotate(rotation, what);
0653     vec[i]->SetMomentum(momentum);
0654   }
0655 }
0656
0657 const G4DynamicParticle* FullModelHadronicProcess::FindRhadron(G4ParticleChange* aParticleChange) {
0658   G4int nsec = aParticleChange->GetNumberOfSecondaries();
0659   if (nsec == 0)
0660     return nullptr;
0661   int i = 0;
0662   G4bool found = false;
0663   while (i != nsec && !found) {
0664     //    G4cout<<"Checking "<<aParticleChange->GetSecondary(i)->GetDynamicParticle()->GetDefinition()->GetParticleName()<<G4endl;
0665     //    if (aParticleChange->GetSecondary(i)->GetDynamicParticle()->GetDefinition()->GetParticleType()=="rhadron") found = true;
0666     if (dynamic_cast<CustomParticle*>(aParticleChange->GetSecondary(i)->GetDynamicParticle()->GetDefinition()) !=
0667         nullptr)
0668       found = true;
0669     i++;
0670   }
0671   i--;
0672   if (found)
0673     return aParticleChange->GetSecondary(i)->GetDynamicParticle();
0674   return nullptr;
0675 }