#include <TPDGCode.h>
#include <TSystem.h>
#include <TTree.h>
-
#include "AliConst.h"
#include "AliDecayerPythia.h"
#include "AliGenPythia.h"
+#include "AliHeader.h"
#include "AliGenPythiaEventHeader.h"
#include "AliPythia.h"
#include "AliPythiaRndm.h"
#include "AliStack.h"
#include "AliRunLoader.h"
#include "AliMC.h"
+#include "pyquenCommon.h"
ClassImp(AliGenPythia)
fParticles = 0;
fPythia = 0;
fHeader = 0;
+ fReadFromFile = 0;
+ fEventTime = 0.;
+ fInteractionRate = 0.;
+ fTimeWindow = 0.;
+ fEventsTime = 0;
+ fCurSubEvent = 0;
fDecayer = new AliDecayerPythia();
SetEventListRange();
SetJetPhiRange();
SetJetEtRange();
SetGammaPhiRange();
SetGammaEtaRange();
+ SetTriggerParticle();
SetPtKick();
SetQuench();
-
+ SetHadronisation();
fSetNuclei = kFALSE;
+ fNewMIS = kFALSE;
+ fHFoff = kFALSE;
if (!AliPythiaRndm::GetPythiaRandom())
AliPythiaRndm::SetPythiaRandom(GetRandom());
}
fName = "Pythia";
fTitle= "Particle Generator using PYTHIA";
fXsection = 0.;
+ fReadFromFile = 0;
+ fEventTime = 0.;
+ fInteractionRate = 0.;
+ fTimeWindow = 0.;
+ fEventsTime = 0;
+ fCurSubEvent = 0;
SetProcess();
SetStrucFunc();
SetForceDecay();
SetJetEtRange();
SetGammaPhiRange();
SetGammaEtaRange();
+ SetTriggerParticle();
SetJetReconstructionMode();
SetQuench();
+ SetHadronisation();
SetPtKick();
// Options determining what to keep in the stack (Heavy flavour generation)
fStackFillOpt = kFlavorSelection; // Keep particle with selected flavor
// Pycel
SetPycellParameters();
fSetNuclei = kFALSE;
+ fNewMIS = kFALSE;
+ fHFoff = kFALSE;
}
AliGenPythia::AliGenPythia(const AliGenPythia & Pythia)
AliGenPythia::~AliGenPythia()
{
// Destructor
+ if(fEventsTime) delete fEventsTime;
+}
+
+void AliGenPythia::SetInteractionRate(Float_t rate,Float_t timewindow)
+{
+// Generate pileup using user specified rate
+ fInteractionRate = rate;
+ fTimeWindow = timewindow;
+ GeneratePileup();
+}
+
+void AliGenPythia::GeneratePileup()
+{
+// Generate sub events time for pileup
+ fEventsTime = 0;
+ if(fInteractionRate == 0.) {
+ Warning("GeneratePileup","Zero interaction specified. Skipping pileup generation.\n");
+ return;
+ }
+
+ Int_t npart = NumberParticles();
+ if(npart < 0) {
+ Warning("GeneratePileup","Negative number of particles. Skipping pileup generation.\n");
+ return;
+ }
+
+ if(fEventsTime) delete fEventsTime;
+ fEventsTime = new TArrayF(npart);
+ TArrayF &array = *fEventsTime;
+ for(Int_t ipart = 0; ipart < npart; ipart++)
+ array[ipart] = 0.;
+
+ Float_t eventtime = 0.;
+ while(1)
+ {
+ eventtime += (AliPythiaRndm::GetPythiaRandom())->Exp(1./fInteractionRate);
+ if(eventtime > fTimeWindow) break;
+ array.Set(array.GetSize()+1);
+ array[array.GetSize()-1] = eventtime;
+ }
+
+ eventtime = 0.;
+ while(1)
+ {
+ eventtime -= (AliPythiaRndm::GetPythiaRandom())->Exp(1./fInteractionRate);
+ if(TMath::Abs(eventtime) > fTimeWindow) break;
+ array.Set(array.GetSize()+1);
+ array[array.GetSize()-1] = eventtime;
+ }
+
+ SetNumberParticles(fEventsTime->GetSize());
}
void AliGenPythia::SetPycellParameters(Float_t etamax, Int_t neta, Int_t nphi,
fPythia->SetMSTP(91,0);
}
- // fPythia->SetMSTJ(1,2);
+
+ if (fReadFromFile) {
+ fRL = AliRunLoader::Open(fFileName, "Partons");
+ fRL->LoadKinematics();
+ fRL->LoadHeader();
+ } else {
+ fRL = 0x0;
+ }
+// Switch off Heavy Flavors on request
+ if (fHFoff) {
+ fPythia->SetMSTP(58, 3);
+ fPythia->SetMSTJ(45, 3);
+ for (Int_t i = 156; i <= 160; i++) fPythia->SetMDME(i, 1, 0);
+ }
//
fPythia->ProcInit(fProcess,fEnergyCMS,fStrucFunc);
// Parent and Children Selection
switch (fProcess)
{
+ case kPyOldUEQ2ordered:
+ case kPyOldUEQ2ordered2:
+ case kPyOldPopcorn:
+ break;
case kPyCharm:
case kPyCharmUnforced:
case kPyCharmPbPbMNR:
fParentSelect[0] = 421;
fFlavorSelect = 4;
break;
+ case kPyDPlusPbPbMNR:
+ case kPyDPluspPbMNR:
+ case kPyDPlusppMNR:
+ fParentSelect[0] = 411;
+ fFlavorSelect = 4;
+ break;
case kPyBeauty:
case kPyBeautyPbPbMNR:
case kPyBeautypPbMNR:
case kPyJets:
case kPyDirectGamma:
break;
+ case kPyW:
+ case kPyZ:
+ break;
}
//
//
fDyBoost = 0;
Warning("Init","SetNuclei used. Use SetProjectile + SetTarget instead. fDyBoost has been reset to 0\n");
}
+
+ if (fQuench) {
+ fPythia->InitQuenching(0., 0.1, 0.6e6, 0);
+ }
+
}
void AliGenPythia::Generate()
Int_t jev=0;
Int_t j, kf;
fTrials=0;
+ fEventTime = 0.;
+
// Set collision vertex position
// event loop
while(1)
{
- if (fQuench) {
- fPythia->SetMSTJ(1, 0);
- }
- fPythia->Pyevnt();
-
- if (fQuench) {
- fPythia->Quench();
- fPythia->SetMSTJ(1, 1);
- fPythia->Pyexec();
+//
+// Produce event
+//
+//
+// Switch hadronisation off
+//
+ fPythia->SetMSTJ(1, 0);
+//
+// Either produce new event or read partons from file
+//
+ if (!fReadFromFile) {
+ if (!fNewMIS) {
+ fPythia->Pyevnt();
+ } else {
+ fPythia->Pyevnw();
+ }
+ fNpartons = fPythia->GetN();
+ } else {
+ printf("Loading Event %d\n",AliRunLoader::GetRunLoader()->GetEventNumber());
+ fRL->GetEvent(AliRunLoader::GetRunLoader()->GetEventNumber());
+ fPythia->SetN(0);
+ LoadEvent(fRL->Stack(), 0 , 1);
+ fPythia->Pyedit(21);
}
- if (gAlice) {
- if (gAlice->GetEvNumber()>=fDebugEventFirst &&
- gAlice->GetEvNumber()<=fDebugEventLast) fPythia->Pylist(1);
+//
+// Run quenching routine
+//
+ if (fQuench == 1) {
+ fPythia->Quench();
+ } else if (fQuench == 2){
+ fPythia->Pyquen(208., 0, 0.);
}
-
+//
+// Switch hadronisation on
+//
+ fPythia->SetMSTJ(1, 1);
+//
+// .. and perform hadronisation
+// printf("Calling hadronisation %d\n", fPythia->GetN());
+ fPythia->Pyexec();
fTrials++;
fPythia->ImportParticles(fParticles,"All");
-
Boost();
//
//
//
Int_t i;
+
Int_t np = fParticles->GetEntriesFast();
- if (np == 0 ) continue;
+
+ if (np == 0) continue;
//
//
Int_t* pParent = new Int_t[np];
Int_t* pSelected = new Int_t[np];
Int_t* trackIt = new Int_t[np];
- for (i=0; i< np; i++) {
+ for (i = 0; i < np; i++) {
pParent[i] = -1;
pSelected[i] = 0;
trackIt[i] = 0;
Int_t nTkbles = 0; // Trackable particles
if (fProcess != kPyMb && fProcess != kPyJets &&
fProcess != kPyDirectGamma &&
- fProcess != kPyMbNonDiffr) {
+ fProcess != kPyMbNonDiffr &&
+ fProcess != kPyW && fProcess != kPyZ ) {
- for (i = 0; i<np; i++) {
+ for (i = 0; i < np; i++) {
TParticle* iparticle = (TParticle *) fParticles->At(i);
Int_t ks = iparticle->GetStatusCode();
kf = CheckPDGCode(iparticle->GetPdgCode());
// quark ?
kf = TMath::Abs(kf);
Int_t kfl = kf;
+ // Resonance
+
+ if (kfl > 100000) kfl %= 100000;
+ if (kfl > 10000) kfl %= 10000;
// meson ?
if (kfl > 10) kfl/=100;
// baryon
if (kfl > 10) kfl/=10;
- if (kfl > 10) kfl/=10;
-
Int_t ipa = iparticle->GetFirstMother()-1;
Int_t kfMo = 0;
+//
+// Establish mother daughter relation between heavy quarks and mesons
+//
+ if (kf >= fFlavorSelect && kf <= 6) {
+ Int_t idau = iparticle->GetFirstDaughter() - 1;
+ if (idau > -1) {
+ TParticle* daughter = (TParticle *) fParticles->At(idau);
+ Int_t pdgD = daughter->GetPdgCode();
+ if (pdgD == 91 || pdgD == 92) {
+ Int_t jmin = daughter->GetFirstDaughter() - 1;
+ Int_t jmax = daughter->GetLastDaughter() - 1;
+ for (Int_t j = jmin; j <= jmax; j++)
+ ((TParticle *) fParticles->At(j))->SetFirstMother(i+1);
+ } // is string or cluster
+ } // has daughter
+ } // heavy quark
+
if (ipa > -1) {
TParticle * mother = (TParticle *) fParticles->At(ipa);
kfMo = TMath::Abs(mother->GetPdgCode());
}
+
// What to keep in Stack?
Bool_t flavorOK = kFALSE;
Bool_t selectOK = kFALSE;
if (fFeedDownOpt) {
- if (kfl >= fFlavorSelect) flavorOK = kTRUE;
+ if (kfl >= fFlavorSelect) flavorOK = kTRUE;
} else {
- if (kfl > fFlavorSelect) {
- nc = -1;
- break;
- }
- if (kfl == fFlavorSelect) flavorOK = kTRUE;
+ if (kfl > fFlavorSelect) {
+ nc = -1;
+ break;
+ }
+ if (kfl == fFlavorSelect) flavorOK = kTRUE;
}
switch (fStackFillOpt) {
case kFlavorSelection:
- selectOK = kTRUE;
- break;
+ selectOK = kTRUE;
+ break;
case kParentSelection:
- if (ParentSelected(kf) || kf <= 10) selectOK = kTRUE;
- break;
+ if (ParentSelected(kf) || kf <= 10) selectOK = kTRUE;
+ break;
}
if (flavorOK && selectOK) {
//
// Kinematic seletion on final state heavy flavor mesons
if (ParentSelected(kf) && !KinematicSelection(iparticle, 0))
{
- continue;
+ continue;
}
pSelected[i] = 1;
if (ParentSelected(kf)) ++nParents; // Update parent count
} else {
// Kinematic seletion on decay products
if (fCutOnChild && ParentSelected(kfMo) && ChildSelected(kf)
- && !KinematicSelection(iparticle, 1))
+ && !KinematicSelection(iparticle, 1))
{
- continue;
+ continue;
}
//
// Decay products
if (!pSelected[i]) continue;
// Count quarks only if you did not include fragmentation
if (fFragmentation && kf <= 10) continue;
+
nc++;
// Decision on tracking
trackIt[i] = 0;
} else {
nc = GenerateMB();
} // mb ?
+
+ GetSubEventTime();
if (pParent) delete[] pParent;
if (pSelected) delete[] pSelected;
}
if (jev >= fNpart || fNpart == -1) {
fKineBias=Float_t(fNpart)/Float_t(fTrials);
- printf("\n Trials: %i %i %i\n",fTrials, fNpart, jev);
-
fQ += fPythia->GetVINT(51);
fX1 += fPythia->GetVINT(41);
fX2 += fPythia->GetVINT(42);
// converts from mm/c to s
const Float_t kconv=0.001/2.999792458e8;
- Int_t np = fParticles->GetEntriesFast();
+ Int_t np = (fHadronisation) ? fParticles->GetEntriesFast() : fNpartons;
+
+
Int_t* pParent = new Int_t[np];
for (i=0; i< np; i++) pParent[i] = -1;
if (fProcess == kPyJets || fProcess == kPyDirectGamma) {
if (!CheckTrigger(jet1, jet2)) return 0;
}
- for (i = 0; i<np; i++) {
+ if (fTriggerParticle) {
+ Bool_t triggered = kFALSE;
+ for (i = 0; i < np; i++) {
+ TParticle * iparticle = (TParticle *) fParticles->At(i);
+ kf = CheckPDGCode(iparticle->GetPdgCode());
+ if (TMath::Abs(kf) != fTriggerParticle) continue;
+ if (iparticle->Pt() == 0.) continue;
+ if (TMath::Abs(iparticle->Eta()) > fTriggerEta) continue;
+ triggered = kTRUE;
+ break;
+ }
+ if (!triggered) return 0;
+ }
+
+
+ //Introducing child cuts in case kPyW, kPyZ, kPyMb, and kPyMbNonDiff
+ if ( (fProcess == kPyW || fProcess == kPyZ || fProcess == kPyMb || fProcess == kPyMbNonDiffr)
+ && (fCutOnChild == 1) ) {
+ if ( !CheckKinematicsOnChild() ) {
+ if (pParent) delete[] pParent;
+ return 0;
+ }
+ }
+
+
+
+ for (i = 0; i < np; i++) {
Int_t trackIt = 0;
TParticle * iparticle = (TParticle *) fParticles->At(i);
kf = CheckPDGCode(iparticle->GetPdgCode());
p[1] = iparticle->Py();
p[2] = iparticle->Pz();
p[3] = iparticle->Energy();
+
origin[0] = fVertex[0]+iparticle->Vx()/10; // [cm]
origin[1] = fVertex[1]+iparticle->Vy()/10; // [cm]
origin[2] = fVertex[2]+iparticle->Vz()/10; // [cm]
- Float_t tof=kconv*iparticle->T();
+ Float_t tof = fEventTime + kconv * iparticle->T();
PushTrack(fTrackIt*trackIt, iparent, kf,
p[0], p[1], p[2], p[3],
origin[0], origin[1], origin[2], tof,
polar[0], polar[1], polar[2],
kPPrimary, nt, 1., ks);
+ //
+ // Special Treatment to store color-flow
+ //
+ if (ks == 3 || ks == 13 || ks == 14) {
+ TParticle* particle = 0;
+ if (fStack) {
+ particle = fStack->Particle(nt);
+ } else {
+ particle = gAlice->Stack()->Particle(nt);
+ }
+ particle->SetFirstDaughter(fPythia->GetK(2, i));
+ particle->SetLastDaughter(fPythia->GetK(3, i));
+ }
+
KeepTrack(nt);
pParent[i] = nt;
+ SetHighWaterMark(nt);
+
} // select particle
} // particle loop
if (pParent) delete[] pParent;
-
- printf("\n I've put %i particles on the stack \n",nc);
- return nc;
+ return 1;
}
{
// Print x-section summary
fPythia->Pystat(1);
- fQ /= fNev;
- fX1 /= fNev;
- fX2 /= fNev;
+
+ if (fNev > 0.) {
+ fQ /= fNev;
+ fX1 /= fNev;
+ fX2 /= fNev;
+ }
+
printf("\nTotal number of Pyevnt() calls %d\n", fTrialsRun);
printf("\nMean Q, x1, x2: %f %f %f\n", fQ, fX1, fX2);
-
-
}
void AliGenPythia::AdjustWeights()
void AliGenPythia::MakeHeader()
{
+ if (gAlice) {
+ if (gAlice->GetEvNumber()>=fDebugEventFirst &&
+ gAlice->GetEvNumber()<=fDebugEventLast) fPythia->Pylist(2);
+ }
+
// Builds the event header, to be called after each event
if (fHeader) delete fHeader;
fHeader = new AliGenPythiaEventHeader("Pythia");
fHeader->SetPrimaryVertex(fVertex);
//
// Jets that have triggered
+
if (fProcess == kPyJets)
{
Int_t ntrig, njet;
Float_t jets[4][10];
GetJets(njet, ntrig, jets);
+
for (Int_t i = 0; i < ntrig; i++) {
((AliGenPythiaEventHeader*) fHeader)->AddJet(jets[0][i], jets[1][i], jets[2][i],
jets[3][i]);
}
}
- if (gAlice) gAlice->SetGenEventHeader(fHeader);
+//
+// Copy relevant information from external header, if present.
+//
+ Float_t uqJet[4];
+
+ if (fRL) {
+ AliGenPythiaEventHeader* exHeader = (AliGenPythiaEventHeader*) (fRL->GetHeader()->GenEventHeader());
+ for (Int_t i = 0; i < exHeader->NTriggerJets(); i++)
+ {
+ printf("Adding Jet %d %d \n", i, exHeader->NTriggerJets());
+
+
+ exHeader->TriggerJet(i, uqJet);
+ ((AliGenPythiaEventHeader*) fHeader)->AddUQJet(uqJet[0], uqJet[1], uqJet[2], uqJet[3]);
+ }
+ }
+//
+// Store quenching parameters
+//
+ if (fQuench){
+ Double_t z[4];
+ Double_t xp, yp;
+ if (fQuench == 1) {
+ // Pythia::Quench()
+ fPythia->GetQuenchingParameters(xp, yp, z);
+ } else {
+ // Pyquen
+ Double_t r1 = PARIMP.rb1;
+ Double_t r2 = PARIMP.rb2;
+ Double_t b = PARIMP.b1;
+ Double_t r = 0.5 * TMath::Sqrt(2. * (r1 * r1 + r2 * r2) - b * b);
+ Double_t phi = PARIMP.psib1;
+ xp = r * TMath::Cos(phi);
+ yp = r * TMath::Sin(phi);
+
+ }
+ ((AliGenPythiaEventHeader*) fHeader)->SetXYJet(xp, yp);
+ ((AliGenPythiaEventHeader*) fHeader)->SetZQuench(z);
+ }
+//
+// Store pt^hard
+ ((AliGenPythiaEventHeader*) fHeader)->SetPtHard(fPythia->GetVINT(47));
+//
+// Pass header
+//
+ AddHeader(fHeader);
}
-
+
+void AliGenPythia::AddHeader(AliGenEventHeader* header)
+{
+ // Add header to container or runloader
+ if (fContainer) {
+ fContainer->AddHeader(header);
+ } else {
+ AliRunLoader::GetRunLoader()->GetHeader()->SetGenEventHeader(header);
+ }
+}
+
Bool_t AliGenPythia::CheckTrigger(TParticle* jet1, TParticle* jet2)
{
}
return triggered;
}
+
+
+//Checking Kinematics on Child (status code 1, particle code ?, kin cuts
+Bool_t AliGenPythia::CheckKinematicsOnChild(){
+
+ Bool_t checking = kFALSE;
+ Int_t j, kcode, ks, km;
+ Int_t nPartAcc = 0; //number of particles in the acceptance range
+ Int_t numberOfAcceptedParticles = 1;
+ if (fNumberOfAcceptedParticles != 0) { numberOfAcceptedParticles = fNumberOfAcceptedParticles; }
+ Int_t npart = fParticles->GetEntriesFast();
+
+ for (j = 0; j<npart; j++) {
+ TParticle * jparticle = (TParticle *) fParticles->At(j);
+ kcode = TMath::Abs( CheckPDGCode(jparticle->GetPdgCode()) );
+ ks = jparticle->GetStatusCode();
+ km = jparticle->GetFirstMother();
+
+ if( (ks == 1) && (kcode == fPdgCodeParticleforAcceptanceCut) && (KinematicSelection(jparticle,1)) ){
+ nPartAcc++;
+ }
+ if( numberOfAcceptedParticles <= nPartAcc){
+ checking = kTRUE;
+ break;
+ }
+ }
+
+ return checking;
+}
+
AliGenPythia& AliGenPythia::operator=(const AliGenPythia& rhs)
{
return *this;
}
-void AliGenPythia::LoadEvent()
+void AliGenPythia::LoadEvent(AliStack* stack, Int_t flag, Int_t reHadr)
{
//
// Load event into Pythia Common Block
//
-
- AliRunLoader* rl = AliRunLoader::GetRunLoader();
- Int_t npart = (rl->Stack())-> GetNprimary();
- (fPythia->GetPyjets())->N = npart;
+ Int_t npart = stack -> GetNprimary();
+ Int_t n0 = 0;
+
+ if (!flag) {
+ (fPythia->GetPyjets())->N = npart;
+ } else {
+ n0 = (fPythia->GetPyjets())->N;
+ (fPythia->GetPyjets())->N = n0 + npart;
+ }
+
+
for (Int_t part = 0; part < npart; part++) {
- TParticle *MPart = (rl->Stack())->Particle(part);
- Int_t kf = MPart->GetPdgCode();
- Int_t ks = MPart->GetStatusCode();
+ TParticle *MPart = stack->Particle(part);
+
+ Int_t kf = MPart->GetPdgCode();
+ Int_t ks = MPart->GetStatusCode();
+ Int_t idf = MPart->GetFirstDaughter();
+ Int_t idl = MPart->GetLastDaughter();
+
+ if (reHadr) {
+ if (ks == 11 || ks == 12) {
+ ks -= 10;
+ idf = -1;
+ idl = -1;
+ }
+ }
+
Float_t px = MPart->Px();
Float_t py = MPart->Py();
Float_t pz = MPart->Pz();
Float_t m = MPart->GetCalcMass();
- (fPythia->GetPyjets())->P[0][part] = px;
- (fPythia->GetPyjets())->P[1][part] = py;
- (fPythia->GetPyjets())->P[2][part] = pz;
- (fPythia->GetPyjets())->P[3][part] = e;
- (fPythia->GetPyjets())->P[4][part] = m;
+ (fPythia->GetPyjets())->P[0][part+n0] = px;
+ (fPythia->GetPyjets())->P[1][part+n0] = py;
+ (fPythia->GetPyjets())->P[2][part+n0] = pz;
+ (fPythia->GetPyjets())->P[3][part+n0] = e;
+ (fPythia->GetPyjets())->P[4][part+n0] = m;
- (fPythia->GetPyjets())->K[1][part] = kf;
- (fPythia->GetPyjets())->K[0][part] = ks;
+ (fPythia->GetPyjets())->K[1][part+n0] = kf;
+ (fPythia->GetPyjets())->K[0][part+n0] = ks;
+ (fPythia->GetPyjets())->K[3][part+n0] = idf + 1;
+ (fPythia->GetPyjets())->K[4][part+n0] = idl + 1;
+ (fPythia->GetPyjets())->K[2][part+n0] = MPart->GetFirstMother() + 1;
}
}
+
void AliGenPythia::RecJetsUA1(Int_t& njets, Float_t jets [4][50])
{
//
Float_t theta = TMath::ATan2(pt,pz);
Float_t et = e * TMath::Sin(theta);
Float_t eta = -TMath::Log(TMath::Tan(theta / 2.));
-
if (
eta > fEtaMinJet && eta < fEtaMaxJet &&
phi > fPhiMinJet && phi < fPhiMaxJet &&
jets[2][nJetsTrig] = pz;
jets[3][nJetsTrig] = e;
nJetsTrig++;
-
+// printf("\n........-Jet #%d: %10.3f %10.3f %10.3f %10.3f \n", i, pt, et, eta, phi * kRaddeg);
} else {
// printf("\n........-Jet #%d: %10.3f %10.3f %10.3f %10.3f \n", i, pt, et, eta, phi * kRaddeg);
}
}
}
+void AliGenPythia::GetSubEventTime()
+{
+ // Calculates time of the next subevent
+ fEventTime = 0.;
+ if (fEventsTime) {
+ TArrayF &array = *fEventsTime;
+ fEventTime = array[fCurSubEvent++];
+ }
+ // printf(" Event time: %d %f %p",fCurSubEvent,fEventTime,fEventsTime);
+ return;
+}
#ifdef never
void AliGenPythia::Streamer(TBuffer &R__b)
}
#endif
+
+
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff