/*
$Log$
+Revision 1.52.4.4 2002/10/10 16:40:08 hristov
+Updating VirtualMC to v3-09-02
+
+Revision 1.62 2002/09/24 10:00:01 morsch
+CheckTrigger() corrected.
+
+Revision 1.61 2002/07/30 09:52:38 morsch
+Call SetGammaPhiRange() and SetGammaEtaRange() in the constructor.
+
+Revision 1.60 2002/07/19 14:49:03 morsch
+Typo corrected.
+
+Revision 1.59 2002/07/19 14:35:36 morsch
+Count total number of trials. Print mean Q, x1, x2.
+
+Revision 1.58 2002/07/17 10:04:09 morsch
+SetYHard method added.
+
+Revision 1.57 2002/05/22 13:22:53 morsch
+Process kPyMbNonDiffr added.
+
+Revision 1.56 2002/04/26 10:30:01 morsch
+Option kPyBeautyPbMNR added. (N. Carrer).
+
+Revision 1.55 2002/04/17 10:23:56 morsch
+Coding Rule violations corrected.
+
+Revision 1.54 2002/03/28 11:49:10 morsch
+Pass status code in SetTrack.
+
+Revision 1.53 2002/03/25 14:51:13 morsch
+New stack-fill and count options introduced (N. Carrer).
+
Revision 1.51 2002/03/06 08:46:57 morsch
- Loop until np-1
- delete dyn. alloc. arrays (N. Carrer)
Introduction of the Copyright and cvs Log
*/
+//
+// Generator using the TPythia interface (via AliPythia)
+// to generate pp collisions.
+// Using SetNuclei() also nuclear modifications to the structure functions
+// can be taken into account. This makes, of course, only sense for the
+// generation of the products of hard processes (heavy flavor, jets ...)
+//
+// andreas.morsch@cern.ch
+//
+
+
#include "AliGenPythia.h"
#include "AliGenPythiaEventHeader.h"
#include "AliDecayerPythia.h"
SetEventListRange();
SetJetPhiRange();
SetJetEtaRange();
+ SetGammaPhiRange();
+ SetGammaEtaRange();
}
AliGenPythia::AliGenPythia(Int_t npart)
SetStrucFunc();
SetForceDecay();
SetPtHard();
+ SetYHard();
SetEnergyCMS();
fDecayer = new AliDecayerPythia();
// Set random number generator
SetEventListRange();
SetJetPhiRange();
SetJetEtaRange();
+ SetGammaPhiRange();
+ SetGammaEtaRange();
+ // Options determining what to keep in the stack (Heavy flavour generation)
+ fStackFillOpt = kFlavorSelection; // Keep particle with selected flavor
+ fFeedDownOpt = kTRUE; // allow feed down from higher family
+ // Fragmentation on/off
+ fFragmentation = kTRUE;
+ // Default counting mode
+ fCountMode = kCountAll;
}
AliGenPythia::AliGenPythia(const AliGenPythia & Pythia)
{
// copy constructor
+ Pythia.Copy(*this);
}
AliGenPythia::~AliGenPythia()
fPythia->SetCKIN(3,fPtHardMin);
- fPythia->SetCKIN(4,fPtHardMax);
+ fPythia->SetCKIN(4,fPtHardMax);
+ fPythia->SetCKIN(7,fYHardMin);
+ fPythia->SetCKIN(8,fYHardMax);
+
if (fNucA1 > 0 && fNucA2 > 0) fPythia->SetNuclei(fNucA1, fNucA2);
+ // Fragmentation?
+ if (fFragmentation) {
+ fPythia->SetMSTP(111,1);
+ } else {
+ fPythia->SetMSTP(111,0);
+ }
+
fPythia->ProcInit(fProcess,fEnergyCMS,fStrucFunc);
// fPythia->Pylist(0);
fParentSelect[3] = 4122;
fFlavorSelect = 4;
break;
+ case kPyD0PbMNR:
+ fParentSelect[0] = 421;
+ fFlavorSelect = 4;
+ break;
case kPyBeauty:
+ case kPyBeautyPbMNR:
fParentSelect[0]= 511;
fParentSelect[1]= 521;
fParentSelect[2]= 531;
fParentSelect[0] = 443;
break;
case kPyMb:
+ case kPyMbNonDiffr:
case kPyJets:
case kPyDirectGamma:
break;
}
+//
+// This counts the total number of calls to Pyevnt() per run.
+ fTrialsRun = 0;
+ fQ = 0.;
+ fX1 = 0.;
+ fX2 = 0.;
+ fNev = 0 ;
+//
AliGenMC::Init();
}
for (i=0; i< np; i++) {
pParent[i] = -1;
pSelected[i] = 0;
+ trackIt[i] = 0;
}
- printf("\n **************************************************%d\n",np);
- Int_t nc = 0;
- if (fProcess != kPyMb && fProcess != kPyJets && fProcess != kPyDirectGamma) {
+
+ Int_t nc = 0; // Total n. of selected particles
+ Int_t nParents = 0; // Selected parents
+ Int_t nTkbles = 0; // Trackable particles
+ if (fProcess != kPyMb && fProcess != kPyJets &&
+ fProcess != kPyDirectGamma &&
+ fProcess != kPyMbNonDiffr) {
for (i = 0; i<np; i++) {
iparticle = (TParticle *) fParticles->At(i);
TParticle * mother = (TParticle *) fParticles->At(ipa);
kfMo = TMath::Abs(mother->GetPdgCode());
}
-// printf("\n particle (all) %d %d %d", i, pSelected[i], kf);
- if (kfl >= fFlavorSelect) {
+ // What to keep in Stack?
+ Bool_t flavorOK = kFALSE;
+ Bool_t selectOK = kFALSE;
+ if (fFeedDownOpt) {
+ if (kfl >= fFlavorSelect) flavorOK = kTRUE;
+ } else {
+ if (kfl > fFlavorSelect) {
+ nc = -1;
+ break;
+ }
+ if (kfl == fFlavorSelect) flavorOK = kTRUE;
+ }
+ switch (fStackFillOpt) {
+ case kFlavorSelection:
+ selectOK = kTRUE;
+ break;
+ case kParentSelection:
+ if (ParentSelected(kf) || kf <= 10) selectOK = kTRUE;
+ break;
+ }
+ if (flavorOK && selectOK) {
//
// Heavy flavor hadron or quark
//
// Kinematic seletion on final state heavy flavor mesons
if (ParentSelected(kf) && !KinematicSelection(iparticle, 0))
{
- nc = -1;
- break;
+ continue;
}
pSelected[i] = 1;
+ if (ParentSelected(kf)) ++nParents; // Update parent count
// printf("\n particle (HF) %d %d %d", i, pSelected[i], kf);
} else {
// Kinematic seletion on decay products
if (fCutOnChild && ParentSelected(kfMo) && ChildSelected(kf)
&& !KinematicSelection(iparticle, 1))
{
- nc = -1;
- break;
+ continue;
}
//
// Decay products
}
if (pSelected[i] == -1) pSelected[i] = 0;
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 {
if (ParentSelected(kf)) trackIt[i] = 0;
}
+ if (trackIt[i] == 1) ++nTkbles; // Update trackable counter
//
//
} // particle selection loop
- if (nc > -1) {
+ if (nc > 0) {
for (i = 0; i<np; i++) {
if (!pSelected[i]) continue;
TParticle * iparticle = (TParticle *) fParticles->At(i);
kf = CheckPDGCode(iparticle->GetPdgCode());
- Int_t ks = iparticle->GetStatusCode();
+ Int_t ks = iparticle->GetStatusCode();
p[0] = iparticle->Px();
p[1] = iparticle->Py();
p[2] = iparticle->Pz();
Int_t ipa = iparticle->GetFirstMother()-1;
Int_t iparent = (ipa > -1) ? pParent[ipa] : -1;
SetTrack(fTrackIt*trackIt[i] ,
- iparent, kf, p, origin, polar, tof, kPPrimary, nt, 1, ks);
+ iparent, kf, p, origin, polar, tof, kPPrimary, nt, 1., ks);
pParent[i] = nt;
KeepTrack(nt);
} // SetTrack loop
if (trackIt) delete[] trackIt;
if (nc > 0) {
- jev+=nc;
+ switch (fCountMode) {
+ case kCountAll:
+ // printf(" Count all \n");
+ jev += nc;
+ break;
+ case kCountParents:
+ // printf(" Count parents \n");
+ jev += nParents;
+ break;
+ case kCountTrackables:
+ // printf(" Count trackable \n");
+ jev += nTkbles;
+ break;
+ }
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);
+ fTrialsRun += fTrials;
+ fNev++;
MakeHeader();
break;
}
Int_t AliGenPythia::GenerateMB()
{
+//
+// Min Bias selection and other global selections
+//
Int_t i, kf, nt, iparent;
Int_t nc = 0;
Float_t p[3];
kf = CheckPDGCode(iparticle->GetPdgCode());
Int_t ks = iparticle->GetStatusCode();
Int_t km = iparticle->GetFirstMother();
-// printf("\n Particle: %d %d %d", i, kf, ks);
-
if ((ks == 1 && kf!=0 && KinematicSelection(iparticle, 0)) ||
(ks != 1) ||
(fProcess == kPyJets && ks == 21 && km == 0 && i>1)) {
nc++;
if (ks == 1) trackIt = 1;
Int_t ipa = iparticle->GetFirstMother()-1;
-
+
iparent = (ipa > -1) ? pParent[ipa] : -1;
-
+
//
// store track information
p[0] = iparticle->Px();
origin[2] = fOrigin[2]+iparticle->Vz()/10.;
Float_t tof=kconv*iparticle->T();
SetTrack(fTrackIt*trackIt, iparent, kf, p, origin, polar,
- tof, kPPrimary, nt, 1., ks);
+ tof, kPPrimary, nt, 1., ks);
KeepTrack(nt);
pParent[i] = nt;
} // select particle
{
// Print x-section summary
fPythia->Pystat(1);
+ 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()
+void AliGenPythia::MakeHeader() const
{
// Builds the event header, to be called after each event
AliGenEventHeader* header = new AliGenPythiaEventHeader("Pythia");
}
-Bool_t AliGenPythia::CheckTrigger(TParticle* jet1, TParticle* jet2)
+Bool_t AliGenPythia::CheckTrigger(TParticle* jet1, TParticle* jet2) const
{
// Check the kinematic trigger condition
//
if (fProcess == kPyJets) {
//Check eta range first...
- if ((eta[0] < fEtaMaxJet && eta[0] > fEtaMinJet) ||
- (eta[1] < fEtaMaxJet && eta[1] > fEtaMinJet))
+ if (
+ ((eta[0] < fEtaMaxJet && eta[0] > fEtaMinJet) &&
+ (phi[0] < fPhiMaxJet && phi[0] > fPhiMinJet))
+
+ ||
+
+ ((eta[1] < fEtaMaxJet && eta[1] > fEtaMinJet) &&
+ (phi[1] < fPhiMaxJet && phi[1] > fPhiMinJet))
+ )
{
- //Eta is okay, now check phi range
- if ((phi[0] < fPhiMaxJet && phi[0] > fPhiMinJet) ||
- (phi[1] < fPhiMaxJet && phi[1] > fPhiMinJet))
- {
- triggered = kTRUE;
- }
+ triggered = kTRUE;
}
} else {
Int_t ij = 0;
}
}
}
-
-
return triggered;
}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff