///////////////////////////////////////////////////////////////////////////////
// //
-// 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 <TFile.h>
-#include <TFolder.h>
+#include <TClonesArray.h>
#include <TObjArray.h>
+#include <TPDGCode.h>
#include <TParticle.h>
#include <TParticlePDG.h>
+#include <TDatabasePDG.h>
#include <TTree.h>
+#include <TDirectory.h>
-#include "AliHit.h"
-#include "AliModule.h"
-#include "AliRun.h"
-#include "AliMC.h"
-#include "AliRunLoader.h"
+#include "AliLog.h"
#include "AliStack.h"
ClassImp(AliStack)
//_______________________________________________________________________
AliStack::AliStack():
- fParticles(0),
- fParticleMap(0),
+ fParticles("TParticle", 1000),
+ fParticleMap(),
fParticleFileMap(0),
fParticleBuffer(0),
+ fCurrentTrack(0),
fTreeK(0),
fNtrack(0),
fNprimary(0),
fCurrentPrimary(-1),
fHgwmk(0),
fLoadPoint(0),
- fEventFolderName(AliConfig::fgkDefaultEventFolderName)
+ fTrackLabelMap(0)
{
//
// Default constructor
}
//_______________________________________________________________________
-AliStack::AliStack(Int_t size, const char* evfoldname):
- fParticles(new TClonesArray("TParticle",1000)),
- fParticleMap(new TObjArray(size)),
+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),
fCurrentPrimary(-1),
fHgwmk(0),
fLoadPoint(0),
- fEventFolderName(evfoldname)
+ fTrackLabelMap(0)
{
//
// Constructor
//_______________________________________________________________________
AliStack::AliStack(const AliStack& st):
- TVirtualMCStack(st),
- fParticles(0),
- fParticleMap(0),
- fParticleFileMap(0),
- fParticleBuffer(0),
- fTreeK(0),
- fNtrack(0),
- fNprimary(0),
- fCurrent(-1),
- fCurrentPrimary(-1),
- fHgwmk(0),
- fLoadPoint(0)
+ 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
- //
- st.Copy(*this);
+ // Copy constructor
}
+
//_______________________________________________________________________
-void AliStack::Copy(AliStack&) const
+void AliStack::Copy(TObject&) const
{
- Fatal("Copy","Not implemented!\n");
+ AliFatal("Not implemented!");
}
//_______________________________________________________________________
// Destructor
//
- if (fParticles) {
- fParticles->Delete();
- delete fParticles;
- }
- delete fParticleMap;
- //PH??? delete fTreeK;
+ fParticles.Clear();
}
//
//
//_____________________________________________________________________________
-void AliStack::PushTrack(Int_t done, Int_t parent, Int_t pdg, Float_t *pmom,
- Float_t *vpos, Float_t *polar, Float_t tof,
+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
vpos[0], vpos[1], vpos[2], tof, polar[0], polar[1], polar[2],
mech, ntr, weight, is);
} else {
- Warning("PushTrack", "Particle type %d not defined in PDG Database !\n", pdg);
- Warning("PushTrack", "Particle skipped !\n");
+ AliWarning(Form("Particle type %d not defined in PDG Database !", pdg));
+ AliWarning("Particle skipped !");
}
}
//
// 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 kFirstDaughter=-1;
const Int_t kLastDaughter=-1;
-
- TClonesArray &particles = *fParticles;
+
+
TParticle* particle
- = new(particles[fLoadPoint++])
+ = new(fParticles[fLoadPoint++])
TParticle(pdg, is, parent, -1, kFirstDaughter, kLastDaughter,
px, py, pz, e, vx, vy, vz, tof);
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 = dynamic_cast<TParticle*>(fParticleMap->At(parent));
- if (particle) {
- particle->SetLastDaughter(fNtrack);
- if(particle->GetFirstDaughter()<0) particle->SetFirstDaughter(fNtrack);
- }
- else {
- printf("Error in AliStack::PushTrack: 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 = dynamic_cast<TParticle*>(fParticleMap.At(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::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=dynamic_cast<TParticle*>(particles.At(i)))) {
+ // Preset map, to be removed later
+ if(i<=fHgwmk) fTrackLabelMap[i]=i ;
+ else {
+ fTrackLabelMap[i] = -99;
+ if((part=dynamic_cast<TParticle*>(fParticleMap.At(i)))) {
//
// Check of this track should be kept for physics reasons
- if (KeepPhysics(part)) KeepTrack(i);
+ if (KeepPhysics(part)) KeepTrack(i);
//
- part->ResetBit(kDaughtersBit);
- part->SetFirstDaughter(-1);
- part->SetLastDaughter(-1);
+ 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 = dynamic_cast<TParticle*>(particles.At(fHgwmk+1));
- particles.At(part->GetFirstMother())->ResetBit(kDaughtersBit);
+ part = dynamic_cast<TParticle*>(fParticleMap.At(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 = dynamic_cast<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 = dynamic_cast<TParticle*>(fParticleMap.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(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 = dynamic_cast<TParticle*>(particles.At(i));
- parent = part->GetFirstMother();
- if(parent>=0) {
- father = dynamic_cast<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 = dynamic_cast<TParticle*>(fParticleMap.At(i));
+ parent = part->GetFirstMother();
+ if(parent>=0) {
+ father = dynamic_cast<TParticle*>(fParticleMap.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);
+ }
}
- }
- }
-
- // Now loop on all registered hit lists
- TList* hitLists = gAlice->GetMCApp()->GetHitLists();
- TIter next(hitLists);
- TCollection *hitList;
- while((hitList = dynamic_cast<TCollection*>(next()))) {
- TIter nexthit(hitList);
- AliHit *hit;
- while((hit = dynamic_cast<AliHit*>(nexthit()))) {
- hit->SetTrack(map[hit->GetTrack()]);
- }
}
-
- //
- // This for detectors which have a special mapping mechanism
- // for hits, such as TPC and TRD
//
+ // 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 = dynamic_cast<TParticle*>(fParticleMap.At(i));
+ fParticleFileMap[i]=static_cast<Int_t>(TreeK()->GetEntries());
+ TreeK()->Fill();
+ fParticleMap[i]=fParticleBuffer=0;
+ }
- TObjArray* modules = gAlice->Modules();
- TIter nextmod(modules);
- AliModule *detector;
- while((detector = dynamic_cast<AliModule*>(nextmod()))) {
- detector->RemapTrackHitIDs(map.GetArray());
- detector->RemapTrackReferencesIDs(map.GetArray());
- }
- //
- gAlice->GetMCApp()->RemapTrackReferencesIDs(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 = dynamic_cast<TParticle*>(particles.At(i));
- fParticleFileMap[i]=static_cast<Int_t>(TreeK()->GetEntries());
- TreeK()->Fill();
- particles[i]=fParticleBuffer=0;
- }
+ 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=nkeep; i<fNtrack; ++i) particles[i]=0;
- Int_t toshrink = fNtrack-fHgwmk-1;
- fLoadPoint-=toshrink;
- for(i=fLoadPoint; i<fLoadPoint+toshrink; ++i) fParticles->RemoveAt(i);
+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;
- fNtrack=nkeep;
- fHgwmk=nkeep-1;
- // delete [] map;
+ //
+ // 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] = (TParticle*) (fParticleMap.At(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 =dynamic_cast<TParticle*>(fParticleMap.At(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;
}
-Bool_t AliStack::KeepPhysics(TParticle* part)
+Bool_t AliStack::KeepPhysics(const TParticle* part)
{
//
// Some particles have to kept on the stack for reasons motivated
// Update event header
-
if (!TreeK()) {
// Fatal("FinishEvent", "No kinematics tree is defined.");
// Don't panic this is a probably a lego run
}
CleanParents();
- if(TreeK()->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))) {
+ if((part=fParticleMap.At(i))) {
fParticleBuffer = dynamic_cast<TParticle*>(part);
fParticleFileMap[i]= static_cast<Int_t>(TreeK()->GetEntries());
TreeK()->Fill();
- //PH (*fParticleMap)[i]=fParticleBuffer=0;
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
{
Int_t curr=track;
while(1) {
- particle=dynamic_cast<TParticle*>(fParticleMap->At(curr));
+ particle=dynamic_cast<TParticle*>(fParticleMap.At(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;
fHgwmk=0;
fLoadPoint=0;
fCurrent = -1;
- fTreeK = 0x0;
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);
}
//_____________________________________________________________________________
//
// 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 = TreeKEntry(i);
// 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]));
}
-
+ // Load particle at entry into fParticleBuffer
TreeK()->GetEntry(entry);
- new ((*fParticles)[nentries]) TParticle(*fParticleBuffer);
- fParticleMap->AddAt((*fParticles)[nentries],i);
+ // Add to the TClonesarray
+ new (fParticles[nentries]) TParticle(*fParticleBuffer);
+ // Store a pointer in the TObjArray
+ fParticleMap.AddAt(fParticles[nentries],i);
}
- //PH return dynamic_cast<TParticle *>((*fParticleMap)[i]);
- return dynamic_cast<TParticle*>(fParticleMap->At(i));
+ return dynamic_cast<TParticle*>(fParticleMap.At(i));
}
//_____________________________________________________________________________
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
+// 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;
// Return number of the parent of the current track
//
- TParticle* current = (TParticle*)fParticleMap->At(fCurrent);
+ TParticle* current = (TParticle*)fParticleMap.At(fCurrent);
if (current)
return current->GetFirstMother();
else {
- Warning("GetCurrentParentTrackNumber", "Current track not found in the stack");
+ AliWarning("Current track not found in the stack");
return -1;
}
}
//
// Dumps particle i in the stack
//
-
- //PH dynamic_cast<TParticle*>((*fParticleMap)[i])->Print();
- dynamic_cast<TParticle*>(fParticleMap->At(i))->Print();
+ dynamic_cast<TParticle*>(fParticleMap.At(i))->Print();
}
//_____________________________________________________________________________
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 = dynamic_cast<TParticle*>(particles[i]);
+ TParticle* particle = dynamic_cast<TParticle*>(fParticleMap[i]);
if (particle) {
printf("-> %d ",i); particle->Print();
printf("--------------------------------------------------------------\n");
// Set parent/daughter relations
//
- TObjArray &particles = *fParticleMap;
TParticle *part;
int i;
for(i=0; i<fHgwmk+1; i++) {
- part = dynamic_cast<TParticle*>(particles.At(i));
+ part = dynamic_cast<TParticle*>(fParticleMap.At(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 = dynamic_cast<TParticle*>(fParticleMap->At(i));
+ particle = dynamic_cast<TParticle*>(fParticleMap.At(i));
if ((particle) && (!particle->TestBit(kDoneBit))) {
fCurrent=i;
return particle;
// take next primary if all secondaries were done
while (fCurrentPrimary>=0) {
fCurrent = fCurrentPrimary;
- particle = dynamic_cast<TParticle*>(fParticleMap->At(fCurrentPrimary--));
+ particle = dynamic_cast<TParticle*>(fParticleMap.At(fCurrentPrimary--));
if ((particle) && (!particle->TestBit(kDoneBit))) {
return particle;
}
// nothing to be tracked
fCurrent = -1;
+
+
return particle;
}
//__________________________________________________________________________________________
-TTree* AliStack::TreeK()
-{
-//returns TreeK
- if (fTreeK)
- {
- return fTreeK;
- }
- else
- {
- AliRunLoader *rl = AliRunLoader::GetRunLoader(fEventFolderName);
- if (rl == 0x0)
- {
- Fatal("TreeK","Can not get RunLoader from event folder named %s",fEventFolderName.Data());
- return 0x0;//pro forma
- }
- fTreeK = rl->TreeK();
- if ( fTreeK == 0x0)
- {
- Error("TreeK","Can not get TreeK from RL. Ev. Folder is %s",fEventFolderName.Data());
- }
- else
- {
- ConnectTree();
- }
- }
- return fTreeK;//never reached
-}
-//__________________________________________________________________________________________
-
-void AliStack::ConnectTree()
+void AliStack::ConnectTree(TTree* tree)
{
//
// Creates branch for writing particles
//
- if (AliLoader::fgDebug) Info("ConnectTree","Connecting TreeK");
+
+ fTreeK = tree;
+
+ AliDebug(1, "Connecting TreeK");
if (fTreeK == 0x0)
{
if (TreeK() == 0x0)
{
- Fatal("ConnectTree","Parameter is NULL");//we don't like such a jokes
+ AliFatal("Parameter is NULL");//we don't like such a jokes
return;
}
return;//in this case TreeK() calls back this method (ConnectTree)
// Create a branch for particles
- if (AliLoader::fgDebug)
- Info("ConnectTree","Tree name is %s",fTreeK->GetName());
+ AliDebug(2, Form("Tree name is %s",fTreeK->GetName()));
if (fTreeK->GetDirectory())
{
- if (AliLoader::fgDebug)
- Info("ConnectTree","and dir is %s",fTreeK->GetDirectory()->GetName());
+ AliDebug(2, Form("and dir is %s",fTreeK->GetDirectory()->GetName()));
}
else
- Warning("ConnectTree","DIR IS NOT SET !!!");
+ AliWarning("DIR IS NOT SET !!!");
- TBranch *branch=fTreeK->GetBranch(AliRunLoader::fgkKineBranchName);
+ TBranch *branch=fTreeK->GetBranch("Particles");
if(branch == 0x0)
{
- branch = fTreeK->Branch(AliRunLoader::fgkKineBranchName, "TParticle", &fParticleBuffer, 4000);
- if (AliLoader::fgDebug) Info("ConnectTree","Creating Branch in Tree");
+ branch = fTreeK->Branch("Particles", "TParticle", &fParticleBuffer, 4000);
+ AliDebug(2, "Creating Branch in Tree");
}
else
{
- if (AliLoader::fgDebug) Info("ConnectTree","Branch Found in Tree");
+ AliDebug(2, "Branch Found in Tree");
branch->SetAddress(&fParticleBuffer);
}
if (branch->GetDirectory())
{
- if (AliLoader::fgDebug)
- Info("ConnectTree","Branch Dir Name is %s",branch->GetDirectory()->GetName());
+ AliDebug(1, Form("Branch Dir Name is %s",branch->GetDirectory()->GetName()));
}
else
- Warning("ConnectTree","Branch Dir is NOT SET");
+ AliWarning("Branch Dir is NOT SET");
}
-//__________________________________________________________________________________________
-
-void AliStack::BeginEvent()
-{
-// start a new event
- Reset();
-}
-
-//_____________________________________________________________________________
-void AliStack::FinishRun()
-{
-// Clean TreeK information
-}
//_____________________________________________________________________________
Bool_t AliStack::GetEvent()
// Get new event from TreeK
// Reset/Create the particle stack
- fTreeK = 0x0;
-
- if (TreeK() == 0x0) //forces connecting
- {
- Error("GetEvent","cannot find Kine Tree for current event\n");
- return kFALSE;
- }
-
Int_t size = (Int_t)TreeK()->GetEntries();
ResetArrays(size);
return kTRUE;
}
//_____________________________________________________________________________
-void AliStack::SetEventFolderName(const char* foldname)
+Bool_t AliStack::IsStable(Int_t pdg) const
{
- //Sets event folder name
- fEventFolderName = foldname;
+ //
+ // 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