void GetFinalDecayProducts(Int_t ind, IlcStack & stack , TArrayI & ar){
// Recursive algorithm to get the final decay products of a particle
//
// ind is the index of the particle in the IlcStack
// stack is the particle stack from the generator
// ar contains the indexes of the final decay products
// ar[0] is the number of final decay products
if (ind<0 || ind>stack.GetNtrack()) {
cerr << "Invalid index of the particle " << ind << endl;
return;
}
if (ar.GetSize()==0) {
ar.Set(10);
ar[0] = 0;
}
TParticle * part = stack.Particle(ind);
Int_t iFirstDaughter = part->GetFirstDaughter();
if( iFirstDaughter<0) {
// This particle is a final decay product, add its index to the array
ar[0]++;
if (ar.GetSize() <= ar[0]) ar.Set(ar.GetSize()+10); // resize if needed
ar[ar[0]] = ind;
return;
}
Int_t iLastDaughter = part->GetLastDaughter();
for (Int_t id=iFirstDaughter; id<=iLastDaughter;id++) {
// Now search for final decay products of the daughters
GetFinalDecayProducts(id,stack,ar);
}
}
void test(const char * sdir ="signal",
const char * bdir ="backgr") {
TStopwatch timer;
timer.Start();
TString name;
// Signal file, tree, and branch
name = sdir;
name += "/IlcESDs.root";
TFile * fSig = TFile::Open(name.Data());
TTree * tSig = (TTree*)fSig->Get("esdTree");
IlcESDEvent * esdSig = new IlcESDEvent();// The signal ESD object is put here
esdSig->ReadFromTree(tSig);
// Run loader (signal events)
name = sdir;
name += "/gilc.root";
IlcRunLoader* rlSig = IlcRunLoader::Open(name.Data());
// Run loader (underlying events)
name = bdir;
name += "/gilc.root";
IlcRunLoader* rlUnd = IlcRunLoader::Open(name.Data(),"Underlying");
// gIlc
rlSig->LoadgIlc();
rlUnd->LoadgIlc();
gIlc = rlSig->GetIlcRun();
// Now load kinematics and event header
rlSig->LoadKinematics();
rlSig->LoadHeader();
rlUnd->LoadKinematics();
rlUnd->LoadHeader();
// Loop on events: check that MC and data contain the same number of events
Long64_t nevSig = rlSig->GetNumberOfEvents();
Long64_t nevUnd = rlUnd->GetNumberOfEvents();
Long64_t nSigPerUnd = nevSig/nevUnd;
cout << nevSig << " signal events" << endl;
cout << nevUnd << " underlying events" << endl;
cout << nSigPerUnd << " signal events per one underlying" << endl;
for (Int_t iev=0; iev<nevSig; iev++) {
cout << "Signal event " << iev << endl;
Int_t ievUnd = iev/nSigPerUnd;
cout << "Underlying event " << ievUnd << endl;
// Get signal ESD
tSig->GetEntry(iev);
// Get signal kinematics
rlSig->GetEvent(iev);
// Get underlying kinematics
rlUnd->GetEvent(ievUnd);
// Particle stack
IlcStack * stackSig = rlSig->Stack();
Int_t nPartSig = stackSig->GetNtrack();
IlcStack * stackUnd = rlUnd->Stack();
Int_t nPartUnd = stackUnd->GetNtrack();
Int_t nrec = esdSig->GetNumberOfTracks();
cout << nrec << " reconstructed tracks" << endl;
for(Int_t irec=0; irec<nrec; irec++) {
IlcESDtrack * track = esdSig->GetTrack(irec);
UInt_t label = TMath::Abs(track->GetTPCLabel());
if (label>=10000000) {
// Underlying event. 10000000 is the
// value of fkMASKSTEP in IlcRunDigitizer
// cout << " Track from the underlying event" << endl;
label %=10000000;
if (label>=nPartUnd) continue;
TParticle * part = stackUnd->Particle(label);
if(part) part->Print();
}
else {
cout << " Track " << label << " from the signal event" << endl;
if (label>=nPartSig) {
cout <<"Strange, label outside the range "<< endl;
continue;
}
TParticle * part = stackSig->Particle(label);
if(part) part->Print();
}
}
}
fSig->Close();
timer.Stop();
timer.Print();
}
void fastGen(Int_t nev = 1, char* filename = "gilc.root")
{
IlcPDG::AddParticlesToPdgDataBase();
TDatabasePDG::Instance();
// Run loader
IlcRunLoader* rl = IlcRunLoader::Open("gilc.root","FASTRUN","recreate");
rl->SetCompressionLevel(2);
rl->SetNumberOfEventsPerFile(nev);
rl->LoadKinematics("RECREATE");
rl->MakeTree("E");
gIlc->SetRunLoader(rl);
// Create stack
rl->MakeStack();
IlcStack* stack = rl->Stack();
// Header
IlcHeader* header = rl->GetHeader();
// Create and Initialize Generator
// Example of charm generation taken from Config_PythiaHeavyFlavours.C
IlcGenPythia *gener = new IlcGenPythia(-1);
gener->SetEnergyCMS(14000.);
gener->SetMomentumRange(0,999999);
gener->SetPhiRange(0., 360.);
gener->SetThetaRange(0.,180.);
// gener->SetProcess(kPyCharmppMNR); // Correct Pt distribution, wrong mult
gener->SetProcess(kPyMb); // Correct multiplicity, wrong Pt
gener->SetStrucFunc(kCTEQ4L);
gener->SetPtHard(2.1,-1.0);
gener->SetFeedDownHigherFamily(kFALSE);
gener->SetStack(stack);
gener->Init();
// Go to gilc.root
rl->CdGAFile();
// Forbid some decays. Do it after gener->Init(0, because
// the initialization of the generator includes reading of the decay table.
IlcPythia * py= IlcPythia::Instance();
py->SetMDME(737,1,0); //forbid D*+->D+ + pi0
py->SetMDME(738,1,0);//forbid D*+->D+ + gamma
// Forbid all D0 decays except D0->K- pi+
for(Int_t d=747; d<=762; d++){
py->SetMDME(d,1,0);
}
// decay 763 is D0->K- pi+
for(Int_t d=764; d<=807; d++){
py->SetMDME(d,1,0);
}
//
// Event Loop
//
TStopwatch timer;
timer.Start();
for (Int_t iev = 0; iev < nev; iev++) {
cout <<"Event number "<< iev << endl;
// Initialize event
header->Reset(0,iev);
rl->SetEventNumber(iev);
stack->Reset();
rl->MakeTree("K");
// Generate event
Int_t nprim = 0;
Int_t ntrial = 0;
Int_t ndstar = 0;
//-------------------------------------------------------------------------------------
while(!ndstar) {
// Selection of events with D*
stack->Reset();
stack->ConnectTree(rl->TreeK());
gener->Generate();
ntrial++;
nprim = stack->GetNprimary();
for(Int_t ipart =0; ipart < nprim; ipart++){
TParticle * part = stack->Particle(ipart);
if(part) {
if (TMath::Abs(part->GetPdgCode())== 413) {
TArrayI daughtersId;
GetFinalDecayProducts(ipart,*stack,daughtersId);
Bool_t kineOK = kTRUE;
Double_t thetaMin = TMath::Pi()/4;
Double_t thetaMax = 3*TMath::Pi()/4;
for (Int_t id=1; id<=daughtersId[0]; id++) {
TParticle * daughter = stack->Particle(daughtersId[id]);
if (!daughter) {
kineOK = kFALSE;
break;
}
Double_t theta = daughter->Theta();
if (theta<thetaMin || theta>thetaMax) {
kineOK = kFALSE;
break;
}
}
if (!kineOK) continue;
part->Print();
ndstar++;
}
}
}
}
cout << "Number of particles " << nprim << endl;
cout << "Number of trials " << ntrial << endl;
// Finish event
header->SetNprimary(stack->GetNprimary());
header->SetNtrack(stack->GetNtrack());
// I/O
stack->FinishEvent();
header->SetStack(stack);
rl->TreeE()->Fill();
rl->WriteKinematics("OVERWRITE");
} // event loop
timer.Stop();
timer.Print();
// Termination
// Generator
gener->FinishRun();
// Write file
rl->WriteHeader("OVERWRITE");
gener->Write();
rl->Write();
}
void fastGenPA(Int_t nev = 1, char* filename = "gilc.root")
{
// Runloader
IlcRunLoader* rl = IlcRunLoader::Open("gilc.root", "FASTRUN", "recreate");
rl->SetCompressionLevel(2);
rl->SetNumberOfEventsPerFile(10000);
rl->LoadKinematics("RECREATE");
rl->MakeTree("E");
gIlc->SetRunLoader(rl);
// Create stack
rl->MakeStack();
IlcStack* stack = rl->Stack();
// Header
IlcHeader* header = rl->GetHeader();
// Create and Initialize Generator
IlcGenerator *gener = CreateGenerator();
gener->Init();
gener->SetStack(stack);
//
// Event Loop
//
Int_t iev;
for (iev = 0; iev < nev; iev++) {
printf("\n \n Event number %d \n \n", iev);
// Initialize event
header->Reset(0,iev);
rl->SetEventNumber(iev);
stack->Reset();
rl->MakeTree("K");
// Generate event
gener->Generate();
// Analysis
Int_t npart = stack->GetNprimary();
printf("Analyse %d Particles\n", npart);
for (Int_t part=0; part<npart; part++) {
TParticle *MPart = stack->Particle(part);
Int_t mpart = MPart->GetPdgCode();
}
// Finish event
header->SetNprimary(stack->GetNprimary());
header->SetNtrack(stack->GetNtrack());
// I/O
//
stack->FinishEvent();
header->SetStack(stack);
rl->TreeE()->Fill();
rl->WriteKinematics("OVERWRITE");
} // event loop
//
// Termination
// Generator
gener->FinishRun();
// Write file
rl->WriteHeader("OVERWRITE");
gener->Write();
rl->Write();
}
void gen(Int_t nev = 1, char* filename = "gilc.root")
{
// Load libraries
// gSystem->SetIncludePath("-I$ROOTSYS/include -I$ILC_ROOT/include -I$ILC_ROOT");
gSystem->Load("liblhapdf.so"); // Parton density functions
gSystem->Load("libEGPythia6.so"); // TGenerator interface
gSystem->Load("libpythia6.so"); // Pythia
gSystem->Load("libIlcPythia6.so"); // ILC specific implementations
IlcPDG::AddParticlesToPdgDataBase();
TDatabasePDG::Instance();
// Run loader
IlcRunLoader* rl = IlcRunLoader::Open("gilc.root","FASTRUN","recreate");
rl->SetCompressionLevel(2);
rl->SetNumberOfEventsPerFile(nev);
rl->LoadKinematics("RECREATE");
rl->MakeTree("E");
gIlc->SetRunLoader(rl);
// Create stack
rl->MakeStack();
IlcStack* stack = rl->Stack();
// Header
IlcHeader* header = rl->GetHeader();
// Create and Initialize Generator
gROOT->LoadMacro("$ILC_ROOT/test/vmctest/ppbench/genPPbenchConfig.C");
IlcGenerator* gener = genPPbenchConfig();
// Go to gilc.root
rl->CdGAFile();
// Forbid some decays. Do it after gener->Init(0, because
// the initialization of the generator includes reading of the decay table.
// ...
//
// Event Loop
//
TStopwatch timer;
timer.Start();
for (Int_t iev = 0; iev < nev; iev++) {
cout <<"Event number "<< iev << endl;
// Initialize event
header->Reset(0,iev);
rl->SetEventNumber(iev);
stack->Reset();
rl->MakeTree("K");
// Generate event
stack->Reset();
stack->ConnectTree(rl->TreeK());
gener->Generate();
cout << "Number of particles " << stack->GetNprimary() << endl;
// Finish event
header->SetNprimary(stack->GetNprimary());
header->SetNtrack(stack->GetNtrack());
// I/O
stack->FinishEvent();
header->SetStack(stack);
rl->TreeE()->Fill();
rl->WriteKinematics("OVERWRITE");
} // event loop
timer.Stop();
timer.Print();
// Termination
// Generator
gener->FinishRun();
// Write file
rl->WriteHeader("OVERWRITE");
gener->Write();
rl->Write();
}
void fastGen(Int_t nev = 1, char* filename = "gilc.root")
{
// Run loader
IlcRunLoader* rl = IlcRunLoader::Open("gilc.root","FASTRUN","recreate");
rl->SetCompressionLevel(2);
rl->SetNumberOfEventsPerFile(nev);
rl->LoadKinematics("RECREATE");
rl->MakeTree("E");
gIlc->SetRunLoader(rl);
// Create stack
rl->MakeStack();
IlcStack* stack = rl->Stack();
// Header
IlcHeader* header = rl->GetHeader();
// Generator
IlcGenPythia *gener = new IlcGenPythia(-1);
gener->SetMomentumRange(0,999999);
gener->SetProcess(kPyMb);
gener->SetEnergyCMS(14000.);
gener->SetThetaRange(45, 135);
gener->SetPtRange(0., 1000.);
gener->SetStack(stack);
gener->Init();
rl->CdGAFile();
//
// Event Loop
//
for (Int_t iev = 0; iev < nev; iev++) {
// Initialize event
header->Reset(0,iev);
rl->SetEventNumber(iev);
stack->Reset();
rl->MakeTree("K");
// Generate event
Int_t nprim = 0;
Int_t ntrial = 0;
Int_t minmult = 1000;
while(nprim<minmult) {
// Selection of events with multiplicity
// bigger than "minmult"
stack->Reset();
gener->Generate();
ntrial++;
nprim = stack->GetNprimary();
}
cout << "Number of particles " << nprim << endl;
cout << "Number of trials " << ntrial << endl;
// Finish event
header->SetNprimary(stack->GetNprimary());
header->SetNtrack(stack->GetNtrack());
// I/O
stack->FinishEvent();
header->SetStack(stack);
rl->TreeE()->Fill();
rl->WriteKinematics("OVERWRITE");
} // event loop
// Termination
// Generator
gener->FinishRun();
// Stack
stack->FinishRun();
// Write file
rl->WriteHeader("OVERWRITE");
gener->Write();
rl->Write();
}
TEveTrackList*
kine_tracks(Double_t min_pt, Double_t min_p,
Bool_t pdg_col, Bool_t recurse,
Bool_t use_track_refs)
{
IlcRunLoader* rl = IlcEveEventManager::AssertRunLoader();
rl->LoadKinematics();
IlcStack* stack = rl->Stack();
if (!stack)
{
Error("kine_tracks", "can not get kinematics.");
return 0;
}
gEve->DisableRedraw();
TEveTrackList* cont = new TEveTrackList("Kine Tracks");
cont->SetMainColor(3);
TEveTrackPropagator* trkProp = cont->GetPropagator();
kine_track_propagator_setup(trkProp);
gEve->AddElement(cont);
Int_t count = 0;
Int_t Np = stack->GetNprimary();
for (Int_t i = 0; i < Np; ++i)
{
TParticle* p = stack->Particle(i);
if (p->GetStatusCode() <= 1)
{
if (p->Pt() < min_pt && p->P() < min_p) continue;
++count;
IlcEveTrack* track = new IlcEveTrack(p, i, trkProp);
//PH The line below is replaced waiting for a fix in Root
//PH which permits to use variable siza arguments in CINT
//PH on some platforms (alphalinuxgcc, solariscc5, etc.)
//PH track->SetName(Form("%s [%d]", p->GetName(), i));
char form[1000];
sprintf(form,"%s [%d]", p->GetName(), i);
track->SetName(form);
track->SetStdTitle();
Int_t ml = p->GetMother(0);
if (ml != -1)
{
track->SetTitle(Form("%s\nMother label=%d\nMother Pdg=%d",
track->GetElementTitle(),
ml, stack->Particle(ml)->GetPdgCode()));
}
set_track_color(track, pdg_col);
gEve->AddElement(track, cont);
if (recurse)
kine_daughters(track, stack, min_pt, min_p, pdg_col, recurse);
}
}
// set path marks
IlcEveKineTools kt;
kt.SetDaughterPathMarks(cont, stack, recurse);
if (use_track_refs && rl->LoadTrackRefs() == 0)
{
kt.SetTrackReferences(cont, rl->TreeTR(), recurse);
trkProp->SetEditPathMarks(kTRUE);
}
kt.SortPathMarks(cont, recurse);
//PH const Text_t* tooltip = Form("min pT=%.2lf, min P=%.2lf), N=%d", min_pt, min_p, count);
char tooltip[1000];
sprintf(tooltip,"min pT=%.2lf, min P=%.2lf), N=%d", min_pt, min_p, count);
cont->SetTitle(tooltip); // Not broadcasted automatically ...
cont->MakeTracks(recurse);
gEve->EnableRedraw();
gEve->Redraw3D();
return cont;
}
TEveElement*
kine_track(Int_t label,
Bool_t import_mother, Bool_t import_daughters,
Bool_t pdg_col, Bool_t recurse,
TEveElement* cont)
{
// Create mother and daughters tracks with given label.
// mother -> particle with label
// daughters -> daughters of label
if (label < 0) {
Warning("kine_track", "label not set.");
return 0;
}
IlcRunLoader* rl = IlcEveEventManager::AssertRunLoader();
rl->LoadKinematics();
IlcStack* stack = rl->Stack();
if (!stack)
{
Warning("kine_track", "can not get kinematics.");
return 0;
}
if (label >= stack->GetNtrack())
{
Warning("kine_track", "label out of range.");
return 0;
}
TParticle* p = stack->Particle(label);
if (import_mother || (import_daughters && p->GetNDaughters()))
{
TEveTrackPropagator* rs = 0;
if (cont == 0)
{
TEveTrackList* tlist = new TEveTrackList
(Form("Kinematics of %d %d", label, p->GetNDaughters()));
cont = tlist;
TEveTrackPropagator* trkProp = tlist->GetPropagator();
kine_track_propagator_setup(trkProp);
char tooltip[1000];
sprintf(tooltip,"Ndaughters=%d", p->GetNDaughters());
tlist->SetTitle(tooltip);
trkProp->SetMaxOrbs(2);
trkProp->SetEditPathMarks(kTRUE);
gEve->AddElement(cont);
rs = tlist->GetPropagator();
}
else
{
// check if container is TEveTrackList or IlcEveTrack (has rnr-style)
IlcEveTrack* t = dynamic_cast<IlcEveTrack*>(cont);
if (t) {
rs = t->GetPropagator();
} else {
TEveTrackList* l = dynamic_cast<TEveTrackList*>(cont);
if (l)
rs = l->GetPropagator();
else
Error("kine_tracks.C", "TrackRenderStyle not set.");
}
}
if (import_mother)
{
IlcEveTrack* track = new IlcEveTrack(p, label, rs);
char form[1000];
sprintf(form,"%s [%d]", p->GetName(), label);
track->SetName(form);
track->SetStdTitle();
set_track_color(track, pdg_col);
track->MakeTrack();
gEve->AddElement(track, cont);
cont = track;
}
if (import_daughters && p->GetNDaughters())
{
for (int d=p->GetFirstDaughter(); d>0 && d<=p->GetLastDaughter(); ++d)
{
TParticle* dp = stack->Particle(d);
IlcEveTrack* track = new IlcEveTrack(dp, d, rs);
char form[1000];
sprintf(form,"%s [%d]", dp->GetName(), d);
track->SetName(form);
track->SetStdTitle();
set_track_color(track, pdg_col);
track->MakeTrack();
gEve->AddElement(track, cont);
if (recurse)
kine_daughters(track, stack, 0, 0, pdg_col, recurse);
}
}
}
gEve->Redraw3D();
return cont;
}
