* provided "as is" without express or implied warranty. *
**************************************************************************/
-/*
-$Log$
-Revision 1.17 2001/12/05 08:51:56 hristov
-The default constructor now creates no objects (thanks to r.Brun). Some corrections required by the previous changes.
-
-Revision 1.16 2001/11/20 09:27:55 hristov
-Possibility to investigate a primary of not yet loaded particle (I.Hrivnacova)
-
-Revision 1.15 2001/09/04 15:10:37 hristov
-Additional protection is included to avoid some problems using Hijing
-
-Revision 1.14 2001/08/30 09:44:06 hristov
-VertexSource_t added to avoid the warnings
-
-Revision 1.13 2001/08/29 13:31:42 morsch
-Protection against (fTreeK == 0) in destructor.
-
-Revision 1.12 2001/07/27 13:03:13 hristov
-Default Branch split level set to 99
-
-Revision 1.11 2001/07/27 12:34:20 jchudoba
-remove the dummy argument in GetEvent method
-
-Revision 1.10 2001/07/20 10:13:54 morsch
-In Particle(Int_t) use GetEntriesFast to speed up the procedure.
-
-Revision 1.9 2001/07/03 08:10:57 hristov
-J.Chudoba's changes merged correctly with the HEAD
-
-Revision 1.6 2001/05/31 06:59:06 fca
-Clean setting and deleting of fParticleBuffer
-
-Revision 1.5 2001/05/30 12:18:46 hristov
-Loop variables declared once
-
-Revision 1.4 2001/05/25 07:25:20 hristov
-AliStack destructor corrected (I.Hrivnacova)
-
-Revision 1.3 2001/05/22 14:33:16 hristov
-Minor changes
-
-Revision 1.2 2001/05/17 05:49:39 fca
-Reset pointers to daughters
-
-Revision 1.1 2001/05/16 14:57:22 alibrary
-New files for folders and Stack
-
-*/
+/* $Id$ */
///////////////////////////////////////////////////////////////////////////////
// //
-// Particles stack class
+// Particles stack class //
+// Implements the TMCVirtualStack of the Virtual Monte Carlo //
+// Holds the particles transported during simulation //
+// Is used to compare results of reconstruction with simulation //
+// Author A.Morsch //
// //
///////////////////////////////////////////////////////////////////////////////
-#include <iostream.h>
+#include <TClonesArray.h>
#include <TObjArray.h>
+#include <TPDGCode.h>
#include <TParticle.h>
+#include <TParticlePDG.h>
+#include <TDatabasePDG.h>
#include <TTree.h>
-#include <TFile.h>
-#include <TFolder.h>
-#include <TROOT.h>
+#include <TDirectory.h>
+#include "AliLog.h"
#include "AliStack.h"
-#include "AliRun.h"
-#include "AliModule.h"
-#include "AliHit.h"
-//#include "ETrackBits.h"
ClassImp(AliStack)
-//_____________________________________________________________________________
-AliStack::AliStack(Int_t size)
+//_______________________________________________________________________
+AliStack::AliStack():
+ fParticles("TParticle", 1000),
+ fParticleMap(),
+ fParticleFileMap(0),
+ fParticleBuffer(0),
+ fCurrentTrack(0),
+ fTreeK(0),
+ fNtrack(0),
+ fNprimary(0),
+ fCurrent(-1),
+ fCurrentPrimary(-1),
+ fHgwmk(0),
+ fLoadPoint(0),
+ fTrackLabelMap(0)
{
//
- // Constructor
+ // Default constructor
//
-
- // Create the particles arrays
- fParticles = new TClonesArray("TParticle",1000);
- fParticleMap = new TObjArray(size);
- fParticleBuffer = 0;
- fNtrack = 0;
- fNprimary = 0;
- fCurrent = -1;
- fCurrentPrimary = -1;
- fTreeK = 0;
}
-
-//_____________________________________________________________________________
-AliStack::AliStack()
+//_______________________________________________________________________
+AliStack::AliStack(Int_t size, const char* /*evfoldname*/):
+ fParticles("TParticle",1000),
+ fParticleMap(size),
+ fParticleFileMap(0),
+ fParticleBuffer(0),
+ fCurrentTrack(0),
+ fTreeK(0),
+ fNtrack(0),
+ fNprimary(0),
+ fCurrent(-1),
+ fCurrentPrimary(-1),
+ fHgwmk(0),
+ fLoadPoint(0),
+ fTrackLabelMap(0)
{
//
- // Default constructor
+ // Constructor
//
-
- // Create the particles arrays
- fParticles = 0;
- fParticleMap = 0;
- fParticleBuffer = 0;
- fNtrack = 0;
- fCurrent = -1;
- fNprimary = 0;
- fCurrentPrimary = -1;
- fTreeK = 0;
}
+//_______________________________________________________________________
+AliStack::AliStack(const AliStack& st):
+ TVirtualMCStack(st),
+ fParticles("TParticle",1000),
+ fParticleMap(*(st.Particles())),
+ fParticleFileMap(st.fParticleFileMap),
+ fParticleBuffer(0),
+ fCurrentTrack(0),
+ fTreeK((TTree*)(st.fTreeK->Clone())),
+ fNtrack(st.GetNtrack()),
+ fNprimary(st.GetNprimary()),
+ fCurrent(-1),
+ fCurrentPrimary(-1),
+ fHgwmk(0),
+ fLoadPoint(0),
+ fTrackLabelMap(0)
+{
+ // Copy constructor
+}
-//_____________________________________________________________________________
+
+//_______________________________________________________________________
+void AliStack::Copy(TObject&) const
+{
+ AliFatal("Not implemented!");
+}
+
+//_______________________________________________________________________
AliStack::~AliStack()
{
//
// Destructor
//
- if (fParticles) {
- fParticles->Delete();
- delete fParticles;
- }
- delete fParticleMap;
- if (fTreeK) delete fTreeK;
+ fParticles.Clear();
}
//
//
//_____________________________________________________________________________
-void AliStack::SetTrack(Int_t done, Int_t parent, Int_t pdg, Float_t *pmom,
- Float_t *vpos, Float_t *polar, Float_t tof,
- AliMCProcess mech, Int_t &ntr, Float_t weight)
+void AliStack::PushTrack(Int_t done, Int_t parent, Int_t pdg, const Float_t *pmom,
+ const Float_t *vpos, const Float_t *polar, Float_t tof,
+ TMCProcess mech, Int_t &ntr, Float_t weight, Int_t is)
{
//
// Load a track on the stack
//
- // done 0 if the track has to be transported
- // 1 if not
+ // done 1 if the track has to be transported
+ // 0 if not
// parent identifier of the parent track. -1 for a primary
// pdg particle code
// pmom momentum GeV/c
// ntr on output the number of the track stored
//
- Float_t mass;
- const Int_t kfirstdaughter=-1;
- const Int_t klastdaughter=-1;
- const Int_t kS=0;
// const Float_t tlife=0;
//
// also, this method is potentially dangerous if the mass
// used in the MC is not the same of the PDG database
//
- mass = TDatabasePDG::Instance()->GetParticle(pdg)->Mass();
- Float_t e=TMath::Sqrt(mass*mass+pmom[0]*pmom[0]+
- pmom[1]*pmom[1]+pmom[2]*pmom[2]);
-
+ TParticlePDG* pmc = TDatabasePDG::Instance()->GetParticle(pdg);
+ if (pmc) {
+ Float_t mass = TDatabasePDG::Instance()->GetParticle(pdg)->Mass();
+ Float_t e=TMath::Sqrt(mass*mass+pmom[0]*pmom[0]+
+ pmom[1]*pmom[1]+pmom[2]*pmom[2]);
+
// printf("Loading mass %f ene %f No %d ip %d parent %d done %d pos %f %f %f mom %f %f %f kS %d m \n",
// mass,e,fNtrack,pdg,parent,done,vpos[0],vpos[1],vpos[2],pmom[0],pmom[1],pmom[2],kS);
- TClonesArray &particles = *fParticles;
- TParticle* particle
- = new(particles[fLoadPoint++])
- TParticle(pdg, kS, parent, -1, kfirstdaughter, klastdaughter,
- pmom[0], pmom[1], pmom[2], e, vpos[0], vpos[1], vpos[2], tof);
- particle->SetPolarisation(TVector3(polar[0],polar[1],polar[2]));
- particle->SetWeight(weight);
- particle->SetUniqueID(mech);
- if(!done) particle->SetBit(kDoneBit);
-
-
- // Declare that the daughter information is valid
- particle->SetBit(kDaughtersBit);
- // Add the particle to the stack
- fParticleMap->AddAtAndExpand(particle, fNtrack);
- if(parent>=0) {
- particle = (TParticle*) fParticleMap->At(parent);
- if (particle) {
- particle->SetLastDaughter(fNtrack);
- if(particle->GetFirstDaughter()<0) particle->SetFirstDaughter(fNtrack);
- }
- else {
- printf("Error in AliStack::SetTrack: Parent %d does not exist\n",parent);
+ PushTrack(done, parent, pdg, pmom[0], pmom[1], pmom[2], e,
+ vpos[0], vpos[1], vpos[2], tof, polar[0], polar[1], polar[2],
+ mech, ntr, weight, is);
+ } else {
+ AliWarning(Form("Particle type %d not defined in PDG Database !", pdg));
+ AliWarning("Particle skipped !");
}
- }
- else {
- //
- // This is a primary track. Set high water mark for this event
- fHgwmk = fNtrack;
- //
- // Set also number if primary tracks
- fNprimary = fHgwmk+1;
- fCurrentPrimary++;
- }
- ntr = fNtrack++;
}
//_____________________________________________________________________________
-void AliStack::SetTrack(Int_t done, Int_t parent, Int_t pdg,
+void AliStack::PushTrack(Int_t done, Int_t parent, Int_t pdg,
Double_t px, Double_t py, Double_t pz, Double_t e,
Double_t vx, Double_t vy, Double_t vz, Double_t tof,
Double_t polx, Double_t poly, Double_t polz,
- AliMCProcess mech, Int_t &ntr, Float_t weight)
+ TMCProcess mech, Int_t &ntr, Double_t weight, Int_t is)
{
//
// Load a track on the stack
//
- // done 0 if the track has to be transported
- // 1 if not
+ // done 1 if the track has to be transported
+ // 0 if not
// parent identifier of the parent track. -1 for a primary
// pdg particle code
// kS generation status code
// Note: the energy is not calculated from the static mass but
// it is passed by argument e.
-
- const Int_t kS=0;
const Int_t kFirstDaughter=-1;
const Int_t kLastDaughter=-1;
-
- TClonesArray &particles = *fParticles;
+
+
TParticle* particle
- = new(particles[fLoadPoint++])
- TParticle(pdg, kS, parent, -1, kFirstDaughter, kLastDaughter,
+ = new(fParticles[fLoadPoint++])
+ TParticle(pdg, is, parent, -1, kFirstDaughter, kLastDaughter,
px, py, pz, e, vx, vy, vz, tof);
-
+
particle->SetPolarisation(polx, poly, polz);
particle->SetWeight(weight);
particle->SetUniqueID(mech);
- if(!done) particle->SetBit(kDoneBit);
+
+
+ if(!done) {
+ particle->SetBit(kDoneBit);
+ } else {
+ particle->SetBit(kTransportBit);
+ }
+
+
// Declare that the daughter information is valid
particle->SetBit(kDaughtersBit);
// Add the particle to the stack
- fParticleMap->AddAtAndExpand(particle, fNtrack);//CHECK!!
+
+ fParticleMap.AddAtAndExpand(particle, fNtrack);//CHECK!!
if(parent>=0) {
- particle = (TParticle*) fParticleMap->At(parent);
- if (particle) {
- particle->SetLastDaughter(fNtrack);
- if(particle->GetFirstDaughter()<0) particle->SetFirstDaughter(fNtrack);
- }
- else {
- printf("Error in AliStack::SetTrack: Parent %d does not exist\n",parent);
- }
- }
- else {
- //
- // This is a primary track. Set high water mark for this event
- fHgwmk = fNtrack;
- //
- // Set also number if primary tracks
- fNprimary = fHgwmk+1;
- fCurrentPrimary++;
+ particle = GetParticleMapEntry(parent);
+ if (particle) {
+ particle->SetLastDaughter(fNtrack);
+ if(particle->GetFirstDaughter()<0) particle->SetFirstDaughter(fNtrack);
+ }
+ else {
+ AliError(Form("Parent %d does not exist",parent));
+ }
+ } else {
+ //
+ // This is a primary track. Set high water mark for this event
+ fHgwmk = fNtrack;
+ //
+ // Set also number if primary tracks
+ fNprimary = fHgwmk+1;
+ fCurrentPrimary++;
}
ntr = fNtrack++;
}
//_____________________________________________________________________________
-void AliStack::GetNextTrack(Int_t &mtrack, Int_t &ipart, Float_t *pmom,
- Float_t &e, Float_t *vpos, Float_t *polar,
- Float_t &tof)
+TParticle* AliStack::PopNextTrack(Int_t& itrack)
{
//
- // Return next track from stack of particles
+ // Returns next track from stack of particles
//
TParticle* track = GetNextParticle();
-// cout << "GetNextTrack():" << fCurrent << fNprimary << endl;
-
- if(track) {
- mtrack=fCurrent;
- ipart=track->GetPdgCode();
- pmom[0]=track->Px();
- pmom[1]=track->Py();
- pmom[2]=track->Pz();
- e =track->Energy();
- vpos[0]=track->Vx();
- vpos[1]=track->Vy();
- vpos[2]=track->Vz();
- TVector3 pol;
- track->GetPolarisation(pol);
- polar[0]=pol.X();
- polar[1]=pol.Y();
- polar[2]=pol.Z();
- tof=track->T();
+
+ if (track) {
+ itrack = fCurrent;
track->SetBit(kDoneBit);
-// cout << "Filled params" << endl;
}
- else
- mtrack=-1;
+ else
+ itrack = -1;
+
+ fCurrentTrack = track;
+ return track;
+}
+//_____________________________________________________________________________
+TParticle* AliStack::PopPrimaryForTracking(Int_t i)
+{
+ //
+ // Returns i-th primary particle if it is flagged to be tracked,
+ // 0 otherwise
//
- // stop and start timer when we start a primary track
- Int_t nprimaries = fNprimary;
- if (fCurrent >= nprimaries) return;
- if (fCurrent < nprimaries-1) {
- fTimer.Stop();
- track=(TParticle*) fParticleMap->At(fCurrent+1);
- // track->SetProcessTime(fTimer.CpuTime());
+
+ TParticle* particle = Particle(i);
+
+ if (!particle->TestBit(kDoneBit)) {
+ fCurrentTrack = particle;
+ return particle;
}
- fTimer.Start();
-}
-
+ else
+ return 0;
+}
//_____________________________________________________________________________
-void AliStack::PurifyKine()
+Bool_t AliStack::PurifyKine()
{
//
// Compress kinematic tree keeping only flagged particles
// and renaming the particle id's in all the hits
//
- TObjArray &particles = *fParticleMap;
- int nkeep=fHgwmk+1, parent, i;
+ int nkeep = fHgwmk + 1, parent, i;
TParticle *part, *father;
- TArrayI map(particles.GetLast()+1);
+ fTrackLabelMap.Set(fParticleMap.GetLast()+1);
// Save in Header total number of tracks before compression
-
// If no tracks generated return now
- if(fHgwmk+1 == fNtrack) return;
+ if(fHgwmk+1 == fNtrack) return kFALSE;
// First pass, invalid Daughter information
for(i=0; i<fNtrack; i++) {
- // Preset map, to be removed later
- if(i<=fHgwmk) map[i]=i ;
- else {
- map[i] = -99;
- if((part=(TParticle*) particles.At(i))) {
- part->ResetBit(kDaughtersBit);
- part->SetFirstDaughter(-1);
- part->SetLastDaughter(-1);
+ // Preset map, to be removed later
+ if(i<=fHgwmk) fTrackLabelMap[i]=i ;
+ else {
+ fTrackLabelMap[i] = -99;
+ if((part=GetParticleMapEntry(i))) {
+//
+// Check of this track should be kept for physics reasons
+ if (KeepPhysics(part)) KeepTrack(i);
+//
+ part->ResetBit(kDaughtersBit);
+ part->SetFirstDaughter(-1);
+ part->SetLastDaughter(-1);
+ }
}
- }
}
// Invalid daughter information for the parent of the first particle
// generated. This may or may not be the current primary according to
// whether decays have been recorded among the primaries
- part = (TParticle *)particles.At(fHgwmk+1);
- particles.At(part->GetFirstMother())->ResetBit(kDaughtersBit);
+ part = GetParticleMapEntry(fHgwmk+1);
+ fParticleMap.At(part->GetFirstMother())->ResetBit(kDaughtersBit);
// Second pass, build map between old and new numbering
for(i=fHgwmk+1; i<fNtrack; i++) {
- if(particles.At(i)->TestBit(kKeepBit)) {
-
- // This particle has to be kept
- map[i]=nkeep;
- // If old and new are different, have to move the pointer
- if(i!=nkeep) particles[nkeep]=particles.At(i);
- part = (TParticle*) particles.At(nkeep);
-
- // as the parent is always *before*, it must be already
- // in place. This is what we are checking anyway!
- if((parent=part->GetFirstMother())>fHgwmk)
- if(map[parent]==-99) Fatal("PurifyKine","map[%d] = -99!\n",parent);
- else part->SetFirstMother(map[parent]);
-
- nkeep++;
- }
+ if(fParticleMap.At(i)->TestBit(kKeepBit)) {
+ // This particle has to be kept
+ fTrackLabelMap[i]=nkeep;
+ // If old and new are different, have to move the pointer
+ if(i!=nkeep) fParticleMap[nkeep]=fParticleMap.At(i);
+ part = GetParticleMapEntry(nkeep);
+ // as the parent is always *before*, it must be already
+ // in place. This is what we are checking anyway!
+ if((parent=part->GetFirstMother())>fHgwmk) {
+ if(fTrackLabelMap[parent]==-99) Fatal("PurifyKine","fTrackLabelMap[%d] = -99!\n",parent);
+ else part->SetFirstMother(fTrackLabelMap[parent]);}
+ nkeep++;
+ }
}
// Fix daughters information
for (i=fHgwmk+1; i<nkeep; i++) {
- part = (TParticle *)particles.At(i);
- parent = part->GetFirstMother();
- if(parent>=0) {
- father = (TParticle *)particles.At(parent);
- if(father->TestBit(kDaughtersBit)) {
-
- if(i<father->GetFirstDaughter()) father->SetFirstDaughter(i);
- if(i>father->GetLastDaughter()) father->SetLastDaughter(i);
- } else {
- // Initialise daughters info for first pass
- father->SetFirstDaughter(i);
- father->SetLastDaughter(i);
- father->SetBit(kDaughtersBit);
+ part = GetParticleMapEntry(i);
+ parent = part->GetFirstMother();
+ if(parent>=0) {
+ father = GetParticleMapEntry(parent);
+ if(father->TestBit(kDaughtersBit)) {
+
+ if(i<father->GetFirstDaughter()) father->SetFirstDaughter(i);
+ if(i>father->GetLastDaughter()) father->SetLastDaughter(i);
+ } else {
+ // Initialise daughters info for first pass
+ father->SetFirstDaughter(i);
+ father->SetLastDaughter(i);
+ father->SetBit(kDaughtersBit);
+ }
}
- }
- }
-
- // Now loop on all registered hit lists
- TList* hitLists = gAlice->GetHitLists();
- TIter next(hitLists);
- TCollection *hitList;
- while((hitList = (TCollection*)next())) {
- TIter nexthit(hitList);
- AliHit *hit;
- while((hit = (AliHit*)nexthit())) {
- hit->SetTrack(map[hit->GetTrack()]);
- }
}
-
- //
- // This for detectors which have a special mapping mechanism
- // for hits, such as TPC and TRD
//
-
- TObjArray* modules = gAlice->Modules();
- TIter nextmod(modules);
- AliModule *detector;
- while((detector = (AliModule*)nextmod())) {
- detector->RemapTrackHitIDs(map.GetArray());
- }
+ // Now the output bit, from fHgwmk to nkeep we write everything and we erase
+ if(nkeep > fParticleFileMap.GetSize()) fParticleFileMap.Set(Int_t (nkeep*1.5));
+ for (i=fHgwmk+1; i<nkeep; ++i) {
+ fParticleBuffer = GetParticleMapEntry(i);
+ fParticleFileMap[i]=static_cast<Int_t>(TreeK()->GetEntries());
+ TreeK()->Fill();
+ fParticleMap[i]=fParticleBuffer=0;
+ }
- // Now the output bit, from fHgwmk to nkeep we write everything and we erase
- if(nkeep>fParticleFileMap.GetSize()) fParticleFileMap.Set(Int_t (nkeep*1.5));
+ for (i = nkeep; i < fNtrack; ++i) fParticleMap[i]=0;
+
+ Int_t toshrink = fNtrack-fHgwmk-1;
+ fLoadPoint-=toshrink;
+
+ for(i=fLoadPoint; i<fLoadPoint+toshrink; ++i) fParticles.RemoveAt(i);
+ fNtrack=nkeep;
+ fHgwmk=nkeep-1;
+ return kTRUE;
+}
- for (i=fHgwmk+1; i<nkeep; ++i) {
- fParticleBuffer = (TParticle*) particles.At(i);
- fParticleFileMap[i]=(Int_t) fTreeK->GetEntries();
- fTreeK->Fill();
- particles[i]=fParticleBuffer=0;
- }
- for (i=nkeep; i<fNtrack; ++i) particles[i]=0;
+Bool_t AliStack::ReorderKine()
+{
+//
+// In some transport code children might not come in a continuous sequence.
+// In this case the stack has to be reordered in order to establish the
+// mother daughter relation using index ranges.
+//
+ if(fHgwmk+1 == fNtrack) return kFALSE;
- Int_t toshrink = fNtrack-fHgwmk-1;
- fLoadPoint-=toshrink;
- for(i=fLoadPoint; i<fLoadPoint+toshrink; ++i) fParticles->RemoveAt(i);
+ //
+ // Howmany secondaries have been produced ?
+ Int_t nNew = fNtrack - fHgwmk - 1;
+
+ if (nNew > 0) {
+ Int_t i, j;
+ TArrayI map1(nNew);
+ //
+ // Copy pointers to temporary array
+ TParticle** tmp = new TParticle*[nNew];
+
+ for (i = 0; i < nNew; i++) {
+ if (fParticleMap.At(fHgwmk + 1 + i)) {
+ tmp[i] = GetParticleMapEntry(fHgwmk + 1 + i);
+ } else {
+ tmp[i] = 0x0;
+ }
+ map1[i] = -99;
+ }
+
+
+ //
+ // Reset LoadPoint
+ //
+ Int_t loadPoint = fHgwmk + 1;
+ //
+ // Re-Push particles into stack
+ // The outer loop is over parents, the inner over children.
+ // -1 refers to the primary particle
+ //
+ for (i = -1; i < nNew-1; i++) {
+ Int_t ipa;
+ TParticle* parP;
+ if (i == -1) {
+ ipa = tmp[0]->GetFirstMother();
+ parP = GetParticleMapEntry(ipa);
+ } else {
+ ipa = (fHgwmk + 1 + i);
+ // Skip deleted particles
+ if (!tmp[i]) continue;
+ // Skip particles without children
+ if (tmp[i]->GetFirstDaughter() == -1) continue;
+ parP = tmp[i];
+ }
+ // Reset daughter information
+
+ Int_t idaumin = parP->GetFirstDaughter() - fHgwmk - 1;
+ Int_t idaumax = parP->GetLastDaughter() - fHgwmk - 1;
+ parP->SetFirstDaughter(-1);
+ parP->SetLastDaughter(-1);
+ for (j = idaumin; j <= idaumax; j++) {
+ // Skip deleted particles
+ if (!tmp[j]) continue;
+ // Skip particles already handled
+ if (map1[j] != -99) continue;
+ Int_t jpa = tmp[j]->GetFirstMother();
+ // Check if daughter of current parent
+ if (jpa == ipa) {
+ fParticleMap[loadPoint] = tmp[j];
+ // Re-establish daughter information
+ parP->SetLastDaughter(loadPoint);
+ if (parP->GetFirstDaughter() == -1) parP->SetFirstDaughter(loadPoint);
+ // Set Mother information
+ if (i != -1) {
+ tmp[j]->SetFirstMother(map1[i]);
+ }
+ // Build the map
+ map1[j] = loadPoint;
+ // Increase load point
+ loadPoint++;
+ }
+ } // children
+ } // parents
+
+ delete[] tmp;
+
+ //
+ // Build map for remapping of hits
+ //
+ fTrackLabelMap.Set(fNtrack);
+ for (i = 0; i < fNtrack; i ++) {
+ if (i <= fHgwmk) {
+ fTrackLabelMap[i] = i;
+ } else{
+ fTrackLabelMap[i] = map1[i - fHgwmk -1];
+ }
+ }
+ } // new particles poduced
+
+ return kTRUE;
+}
- fNtrack=nkeep;
- fHgwmk=nkeep-1;
- // delete [] map;
+Bool_t AliStack::KeepPhysics(const TParticle* part)
+{
+ //
+ // Some particles have to kept on the stack for reasons motivated
+ // by physics analysis. Decision is put here.
+ //
+ Bool_t keep = kFALSE;
+ //
+ // Keep first-generation daughter from primaries with heavy flavor
+ //
+ Int_t parent = part->GetFirstMother();
+ if (parent >= 0 && parent <= fHgwmk) {
+ TParticle* father = GetParticleMapEntry(parent);
+ Int_t kf = father->GetPdgCode();
+ kf = TMath::Abs(kf);
+ Int_t kfl = kf;
+ // meson ?
+ if (kfl > 10) kfl/=100;
+ // baryon
+ if (kfl > 10) kfl/=10;
+ if (kfl > 10) kfl/=10;
+ if (kfl >= 4) {
+ keep = kTRUE;
+ }
+ }
+ return keep;
}
//_____________________________________________________________________________
void AliStack::FinishEvent()
{
- //
- // Write out the kinematics that was not yet filled
- //
+//
+// Write out the kinematics that was not yet filled
+//
- // Update event header
-
+// Update event header
- if (!fTreeK) {
+ if (!TreeK()) {
// Fatal("FinishEvent", "No kinematics tree is defined.");
// Don't panic this is a probably a lego run
return;
-
}
CleanParents();
- if(fTreeK->GetEntries() ==0) {
+ if(TreeK()->GetEntries() ==0) {
// set the fParticleFileMap size for the first time
fParticleFileMap.Set(fHgwmk+1);
}
Bool_t allFilled = kFALSE;
- TObject *part;
- for(Int_t i=0; i<fHgwmk+1; ++i)
- if((part=fParticleMap->At(i))) {
- fParticleBuffer = (TParticle*) part;
- fParticleFileMap[i]= (Int_t) fTreeK->GetEntries();
- fTreeK->Fill();
- //PH (*fParticleMap)[i]=fParticleBuffer=0;
+ TParticle *part;
+ for(Int_t i=0; i<fHgwmk+1; ++i) {
+ if((part=GetParticleMapEntry(i))) {
+ fParticleBuffer = part;
+ fParticleFileMap[i]= static_cast<Int_t>(TreeK()->GetEntries());
+ TreeK()->Fill();
fParticleBuffer=0;
- fParticleMap->AddAt(0,i);
+ fParticleMap.AddAt(0,i);
// When all primaries were filled no particle!=0
// should be left => to be removed later.
- if (allFilled) printf("Why != 0 part # %d?\n",i);
+ if (allFilled) AliWarning(Form("Why != 0 part # %d?\n",i));
}
- else {
+ else
+ {
// // printf("Why = 0 part # %d?\n",i); => We know.
// break;
- // we don't break now in order to be sure there is no
- // particle !=0 left.
- // To be removed later and replaced with break.
- if(!allFilled) allFilled = kTRUE;
- }
-// cout << "Nof particles: " << fNtrack << endl;
- //Reset();
+ // we don't break now in order to be sure there is no
+ // particle !=0 left.
+ // To be removed later and replaced with break.
+ if(!allFilled) allFilled = kTRUE;
+ }
+ }
}
-
//_____________________________________________________________________________
+
void AliStack::FlagTrack(Int_t track)
{
//
Int_t curr=track;
while(1) {
- particle=(TParticle*)fParticleMap->At(curr);
+ particle = GetParticleMapEntry(curr);
// If the particle is flagged the three from here upward is saved already
if(particle->TestBit(kKeepBit)) return;
// Flags a track to be kept
//
- fParticleMap->At(track)->SetBit(kKeepBit);
+ fParticleMap.At(track)->SetBit(kKeepBit);
}
//_____________________________________________________________________________
-void AliStack::Reset(Int_t size)
+void AliStack::Clean(Int_t size)
{
//
- // Resets stack
+ // Reset stack data except for fTreeK
//
-
+
fNtrack=0;
fNprimary=0;
fHgwmk=0;
ResetArrays(size);
}
+//_____________________________________________________________________________
+void AliStack::Reset(Int_t size)
+{
+ //
+ // Reset stack data including fTreeK
+ //
+
+ Clean(size);
+ delete fParticleBuffer; fParticleBuffer = 0;
+ fTreeK = 0x0;
+}
+
//_____________________________________________________________________________
void AliStack::ResetArrays(Int_t size)
{
//
// Resets stack arrays
//
-
- if (fParticles)
- fParticles->Clear();
- else
- fParticles = new TClonesArray("TParticle",1000);
- if (fParticleMap) {
- fParticleMap->Clear();
- if (size>0) fParticleMap->Expand(size);}
- else
- fParticleMap = new TObjArray(size);
+ fParticles.Clear();
+ fParticleMap.Clear();
+ if (size>0) fParticleMap.Expand(size);
}
//_____________________________________________________________________________
-void AliStack::SetHighWaterMark(Int_t nt)
+void AliStack::SetHighWaterMark(Int_t)
{
//
// Set high water mark for last track in event
//
-
- fHgwmk = fNtrack-1;
- fCurrentPrimary=fHgwmk;
-
- // Set also number of primary tracks
- fNprimary = fHgwmk+1;
- fNtrack = fHgwmk+1;
+
+ fHgwmk = fNtrack-1;
+ fCurrentPrimary=fHgwmk;
+ // Set also number of primary tracks
+ fNprimary = fHgwmk+1;
}
//_____________________________________________________________________________
{
//
// Return particle with specified ID
-
- //PH if(!(*fParticleMap)[i]) {
- if(!fParticleMap->At(i)) {
- Int_t nentries = fParticles->GetEntriesFast();
+
+ if(!fParticleMap.At(i)) {
+ Int_t nentries = fParticles.GetEntriesFast();
// algorithmic way of getting entry index
// (primary particles are filled after secondaries)
- Int_t entry;
- if (i<fNprimary)
- entry = i+fNtrack-fNprimary;
- else
- entry = i-fNprimary;
+ Int_t entry = TreeKEntry(i);
// check whether algorithmic way and
// and the fParticleFileMap[i] give the same;
// give the fatal error if not
if (entry != fParticleFileMap[i]) {
- Fatal("Particle",
+ AliFatal(Form(
"!! The algorithmic way and map are different: !!\n entry: %d map: %d",
- entry, fParticleFileMap[i]);
+ entry, fParticleFileMap[i]));
}
-
- fTreeK->GetEntry(entry);
- new ((*fParticles)[nentries]) TParticle(*fParticleBuffer);
- fParticleMap->AddAt((*fParticles)[nentries],i);
+ // Load particle at entry into fParticleBuffer
+ TreeK()->GetEntry(entry);
+ // Add to the TClonesarray
+ new (fParticles[nentries]) TParticle(*fParticleBuffer);
+ // Store a pointer in the TObjArray
+ fParticleMap.AddAt(fParticles[nentries],i);
}
- //PH return (TParticle *) (*fParticleMap)[i];
- return (TParticle *) fParticleMap->At(i);
+ return GetParticleMapEntry(i);
}
+//_____________________________________________________________________________
+TParticle* AliStack::ParticleFromTreeK(Int_t id) const
+{
+//
+// return pointer to TParticle with label id
+//
+ Int_t entry;
+ if ((entry = TreeKEntry(id)) < 0) return 0;
+ if (fTreeK->GetEntry(entry)<=0) return 0;
+ return fParticleBuffer;
+}
+
+//_____________________________________________________________________________
+Int_t AliStack::TreeKEntry(Int_t id) const
+{
+//
+// Return entry number in the TreeK for particle with label id
+// Return negative number if label>fNtrack
+//
+// The order of particles in TreeK reflects the order of the transport of primaries and production of secondaries:
+//
+// Before transport there are fNprimary particles on the stack.
+// They are transported one by one and secondaries (fNtrack - fNprimary) are produced.
+// After the transport of each particles secondaries are written to the TreeK
+// They occupy the entries 0 ... fNtrack - fNprimary - 1
+// The primaries are written after they have been transported and occupy
+// fNtrack - fNprimary .. fNtrack - 1
+
+ Int_t entry;
+ if (id<fNprimary)
+ entry = id+fNtrack-fNprimary;
+ else
+ entry = id-fNprimary;
+ return entry;
+}
+
+//_____________________________________________________________________________
+Int_t AliStack::GetCurrentParentTrackNumber() const
+{
+ //
+ // Return number of the parent of the current track
+ //
+
+ TParticle* current = GetParticleMapEntry(fCurrent);
+
+ if (current)
+ return current->GetFirstMother();
+ else {
+ AliWarning("Current track not found in the stack");
+ return -1;
+ }
+}
+
//_____________________________________________________________________________
Int_t AliStack::GetPrimary(Int_t id)
{
//
// Dumps particle i in the stack
//
-
- //PH ((TParticle*) (*fParticleMap)[i])->Print();
- ((TParticle*) fParticleMap->At(i))->Print();
+ GetParticleMapEntry(i)->Print();
}
//_____________________________________________________________________________
Int_t i;
- printf(
- "\n\n=======================================================================\n");
+ printf("\n\n=======================================================================\n");
for (i=0;i<fNtrack;i++)
{
TParticle* particle = Particle(i);
Warning("DumpPStack", "No particle with id %d.", i);
}
- printf(
- "\n=======================================================================\n\n");
+ printf("\n=======================================================================\n\n");
// print particle file map
- printf("\nParticle file map: \n");
- for (i=0; i<fNtrack; i++)
- printf(" %d th entry: %d \n",i,fParticleFileMap[i]);
+ // printf("\nParticle file map: \n");
+ // for (i=0; i<fNtrack; i++)
+ // printf(" %d th entry: %d \n",i,fParticleFileMap[i]);
}
// that are loaded in memory.
//
- TObjArray &particles = *fParticleMap;
printf(
"\n\n=======================================================================\n");
for (Int_t i=0;i<fNtrack;i++)
{
- TParticle* particle = (TParticle*) particles[i];
+ TParticle* particle = GetParticleMapEntry(i);
if (particle) {
printf("-> %d ",i); particle->Print();
printf("--------------------------------------------------------------\n");
"\n=======================================================================\n\n");
}
+//_____________________________________________________________________________
+void AliStack::SetCurrentTrack(Int_t track)
+{
+ fCurrent = track;
+ if (fCurrent < fNprimary) fCurrentTrack = Particle(track);
+}
+
+
+//_____________________________________________________________________________
//
// protected methods
//
// Set parent/daughter relations
//
- TObjArray &particles = *fParticleMap;
TParticle *part;
int i;
for(i=0; i<fHgwmk+1; i++) {
- part = (TParticle *)particles.At(i);
+ part = GetParticleMapEntry(i);
if(part) if(!part->TestBit(kDaughtersBit)) {
part->SetFirstDaughter(-1);
part->SetLastDaughter(-1);
// search secondaries
//for(Int_t i=fNtrack-1; i>=0; i--) {
for(Int_t i=fNtrack-1; i>fHgwmk; i--) {
- particle = (TParticle*) fParticleMap->At(i);
+ particle = GetParticleMapEntry(i);
if ((particle) && (!particle->TestBit(kDoneBit))) {
fCurrent=i;
- //cout << "GetNextParticle() - secondary "
- // << fNtrack << " " << fHgwmk << " " << fCurrent << endl;
return particle;
}
}
// take next primary if all secondaries were done
while (fCurrentPrimary>=0) {
fCurrent = fCurrentPrimary;
- particle = (TParticle*) fParticleMap->At(fCurrentPrimary--);
+ particle = GetParticleMapEntry(fCurrentPrimary--);
if ((particle) && (!particle->TestBit(kDoneBit))) {
- //cout << "GetNextParticle() - primary "
- // << fNtrack << " " << fHgwmk << " " << fCurrent << endl;
return particle;
}
}
// nothing to be tracked
fCurrent = -1;
- //cout << "GetNextParticle() - none "
- // << fNtrack << " " << fHgwmk << " " << fCurrent << endl;
+
+
return particle;
}
-
//__________________________________________________________________________________________
-void AliStack::MakeTree(Int_t event, const char *file)
-{
-//
-// Make Kine tree and creates branch for writing particles
-//
- TBranch *branch=0;
- // Make Kinematics Tree
- char hname[30];
-// printf("\n MakeTree called %d", event);
- if (!fTreeK) {
- sprintf(hname,"TreeK%d",event);
- fTreeK = new TTree(hname,"Kinematics");
- // Create a branch for particles
- branch = fTreeK->Branch("Particles", "TParticle", &fParticleBuffer, 4000);
- fTreeK->Write(0,TObject::kOverwrite);
- }
-}
-//_____________________________________________________________________________
-void AliStack::BeginEvent(Int_t event)
+void AliStack::ConnectTree(TTree* tree)
{
-// start a new event
//
+// Creates branch for writing particles
//
- fNprimary = 0;
- fNtrack = 0;
+
+ fTreeK = tree;
- char hname[30];
- if(fTreeK) {
- fTreeK->Reset();
- sprintf(hname,"TreeK%d",event);
- fTreeK->SetName(hname);
- }
-}
+ AliDebug(1, "Connecting TreeK");
+ if (fTreeK == 0x0)
+ {
+ if (TreeK() == 0x0)
+ {
+ AliFatal("Parameter is NULL");//we don't like such a jokes
+ return;
+ }
+ return;//in this case TreeK() calls back this method (ConnectTree)
+ //tree after setting fTreeK, the rest was already executed
+ //it is safe to return now
+ }
-//_____________________________________________________________________________
-void AliStack::FinishRun()
-{
-// Clean TreeK information
- if (fTreeK) {
- delete fTreeK; fTreeK = 0;
- }
+ // Create a branch for particles
+
+ AliDebug(2, Form("Tree name is %s",fTreeK->GetName()));
+
+ if (fTreeK->GetDirectory())
+ {
+ AliDebug(2, Form("and dir is %s",fTreeK->GetDirectory()->GetName()));
+ }
+ else
+ AliWarning("DIR IS NOT SET !!!");
+
+ TBranch *branch=fTreeK->GetBranch("Particles");
+ if(branch == 0x0)
+ {
+ branch = fTreeK->Branch("Particles", "TParticle", &fParticleBuffer, 4000);
+ AliDebug(2, "Creating Branch in Tree");
+ }
+ else
+ {
+ AliDebug(2, "Branch Found in Tree");
+ branch->SetAddress(&fParticleBuffer);
+ }
+ if (branch->GetDirectory())
+ {
+ AliDebug(1, Form("Branch Dir Name is %s",branch->GetDirectory()->GetName()));
+ }
+ else
+ AliWarning("Branch Dir is NOT SET");
}
//_____________________________________________________________________________
-Bool_t AliStack::GetEvent(Int_t event)
+
+Bool_t AliStack::GetEvent()
{
//
// Get new event from TreeK
// Reset/Create the particle stack
- if (fTreeK) delete fTreeK;
-
- // Get Kine Tree from file
- char treeName[20];
- sprintf(treeName,"TreeK%d",event);
- fTreeK = (TTree*)gDirectory->Get(treeName);
-
- if (fTreeK)
- fTreeK->SetBranchAddress("Particles", &fParticleBuffer);
- else {
- Error("GetEvent","cannot find Kine Tree for event:%d\n",event);
- return kFALSE;
- }
-// printf("\n primaries %d", fNprimary);
-// printf("\n tracks %d", fNtrack);
-
- Int_t size = (Int_t)fTreeK->GetEntries();
+ Int_t size = (Int_t)TreeK()->GetEntries();
ResetArrays(size);
return kTRUE;
}
+//_____________________________________________________________________________
+
+Bool_t AliStack::IsStable(Int_t pdg) const
+{
+ //
+ // Decide whether particle (pdg) is stable
+ //
+
+
+ // All ions/nucleons are considered as stable
+ // Nuclear code is 10LZZZAAAI
+ if(pdg>1000000000)return kTRUE;
+
+ const Int_t kNstable = 15;
+ Int_t i;
+
+ Int_t pdgStable[kNstable] = {
+ kGamma, // Photon
+ kElectron, // Electron
+ kMuonPlus, // Muon
+ kPiPlus, // Pion
+ kKPlus, // Kaon
+ kK0Short, // K0s
+ kK0Long, // K0l
+ kProton, // Proton
+ kNeutron, // Neutron
+ kLambda0, // Lambda_0
+ kSigmaMinus, // Sigma Minus
+ kSigmaPlus, // Sigma Plus
+ 3312, // Xsi Minus
+ 3322, // Xsi
+ 3334, // Omega
+ };
+
+ Bool_t isStable = kFALSE;
+ for (i = 0; i < kNstable; i++) {
+ if (pdg == TMath::Abs(pdgStable[i])) {
+ isStable = kTRUE;
+ break;
+ }
+ }
+
+ return isStable;
+}
-//----------------------------------------------------------------------
+//_____________________________________________________________________________
+Bool_t AliStack::IsPhysicalPrimary(Int_t index)
+{
+ //
+ // Test if a particle is a physical primary according to the following definition:
+ // Particles produced in the collision including products of strong and
+ // electromagnetic decay and excluding feed-down from weak decays of strange
+ // particles.
+ //
+ TParticle* p = Particle(index);
+ Int_t ist = p->GetStatusCode();
+
+ //
+ // Initial state particle
+ if (ist > 1) return kFALSE;
+
+ Int_t pdg = TMath::Abs(p->GetPdgCode());
+
+ if (!IsStable(pdg)) return kFALSE;
+
+ if (index < GetNprimary()) {
+//
+// Particle produced by generator
+ return kTRUE;
+ } else {
+//
+// Particle produced during transport
+//
+
+ Int_t imo = p->GetFirstMother();
+ TParticle* pm = Particle(imo);
+ Int_t mpdg = TMath::Abs(pm->GetPdgCode());
+// Check if it comes from a pi0 decay
+//
+// What about the pi0 Dalitz ??
+// if ((mpdg == kPi0) && (imo < GetNprimary())) return kTRUE;
+
+// Check if this is a heavy flavor decay product
+ Int_t mfl = Int_t (mpdg / TMath::Power(10, Int_t(TMath::Log10(mpdg))));
+ //
+ // Light hadron
+ if (mfl < 4) return kFALSE;
+
+ //
+ // Heavy flavor hadron produced by generator
+ if (imo < GetNprimary()) {
+ return kTRUE;
+ }
+
+ // To be sure that heavy flavor has not been produced in a secondary interaction
+ // Loop back to the generated mother
+ while (imo >= GetNprimary()) {
+ imo = pm->GetFirstMother();
+ pm = Particle(imo);
+ }
+ mpdg = TMath::Abs(pm->GetPdgCode());
+ mfl = Int_t (mpdg / TMath::Power(10, Int_t(TMath::Log10(mpdg))));
+
+ if (mfl < 4) {
+ return kFALSE;
+ } else {
+ return kTRUE;
+ }
+ } // produced by generator ?
+}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff