[u/mrichter/AliRoot.git] / ITS / DoVerticesSPD.C

#if !defined(__CINT__) || defined(__MAKECINT__)
#include "TFile.h"
#include "TGeoManager.h"
#include "TInterpreter.h"
#include "TClassTable.h"
#include "TNtuple.h"
#include "TTree.h"
#include "TArrayF.h"
#include "TParticle.h"
#include "AliESD.h"
#include "AliGenPythiaEventHeader.h"
#include "AliTracker.h"
#include "AliHeader.h"
#include "AliITSLoader.h"
#include "AliVertexerTracks.h"
#include "AliCDBManager.h"
#include "AliGeomManager.h"
#include "AliITSDetTypeRec.h"
#include "AliITSVertexer3D.h"
#include "AliITSVertexerZ.h"
#include "AliESDVertex.h"
#include "AliESDEvent.h"
#include "AliRun.h"
#include "AliRunLoader.h"
#include "AliGenEventHeader.h"
#include "AliStack.h"
#endif

/*  $Id$    */

Bool_t DoVerticesSPD(Int_t pileupalgo=1, Int_t optdebug=0){

  TFile *fint = new TFile("VertexSPD.root","recreate");
  TNtuple *nt = new TNtuple("ntvert","vertices","xtrue:ytrue:ztrue:zZ:zdiffZ:zerrZ:ntrksZ:x3D:xdiff3D:xerr3D:y3D:ydiff3D:yerr3D:z3D:zdiff3D:zerr3D:ntrks3D:dndy:ntrklets:nrp1:ptyp:is3D:isTriggered");

  if (gClassTable->GetID("AliRun") < 0) {
    gInterpreter->ExecuteMacro("loadlibs.C");
  }
  // Set OCDB if needed
  AliCDBManager* man = AliCDBManager::Instance();
  if (!man->IsDefaultStorageSet()) {
    printf("Setting a local default storage and run number 0\n");
    man->SetDefaultStorage("local://$ALICE_ROOT/OCDB");
    man->SetRun(0);
  }
  else {
    printf("Using deafult storage \n");
  }
 
  // retrives geometry 
  if(!gGeoManager){
    AliGeomManager::LoadGeometry("geometry.root");
  }
  AliGeomManager::ApplyAlignObjsFromCDB("ITS");

  AliRunLoader* runLoader = AliRunLoader::Open("galice.root");
  if (!runLoader) {
    Error("DoVertices", "getting run loader from file %s failed", 
	  "galice.root");
    return kFALSE;
  }
  runLoader->LoadgAlice();
  gAlice = runLoader->GetAliRun();
  if (!gAlice) {
    Error("DoVertices", "no galice object found");
    return kFALSE;
  }
  runLoader->LoadKinematics();
  runLoader->LoadHeader();
  AliITSLoader* ITSloader =  (AliITSLoader*) runLoader->GetLoader("ITSLoader");
  ITSloader->LoadRecPoints("read");

  Int_t totev=runLoader->GetNumberOfEvents();
  if(optdebug)  printf("Number of events= %d\n",totev);

  TFile* esdFile = TFile::Open("AliESDs.root");
  if (!esdFile || !esdFile->IsOpen()) {
    printf("Error in opening ESD file");
    return kFALSE;
  }

  AliESDEvent * esd = new AliESDEvent;
  TTree* tree = (TTree*) esdFile->Get("esdTree");
  if (!tree) {
    printf("Error: no ESD tree found");
    return kFALSE;
  }
  esd->ReadFromTree(tree);
  tree->GetEvent(0);
  Int_t fieldkG=(Int_t)(TMath::Abs(esd->GetMagneticField())+0.001);
  
  if(fieldkG==5){
    TGeoGlobalMagField::Instance()->SetField(new AliMagF("Maps","Maps", 2, 1., 1., 10., AliMagF::k5kG));
  }else if(fieldkG==2){
    TGeoGlobalMagField::Instance()->SetField(new AliMagF("Maps","Maps", 2, 1., 1., 10., AliMagF::k2kG));
  }else{
    TGeoGlobalMagField::Instance()->SetField(new AliMagF("Maps","Maps", 2, 0., 1., 10., AliMagF::k5kG));
  }
  AliMagF* fld = (AliMagF*)TGeoGlobalMagField::Instance()->GetField();
  printf("Magnetic field set to %f\n",-fld->SolenoidField());

  AliITSDetTypeRec* detTypeRec = new AliITSDetTypeRec();
  Double_t xnom=0.,ynom=0.;
  AliITSVertexerZ *vertz = new AliITSVertexerZ(xnom,ynom);
  vertz->Init("default");
  AliITSVertexer3D *vert3d = new AliITSVertexer3D();
  vert3d->Init("default");
  vert3d->SetWideFiducialRegion(40.,1.);
  vert3d->SetPileupAlgo(pileupalgo);
  vert3d->PrintStatus();
  vertz->SetDetTypeRec(detTypeRec);
  vert3d->SetDetTypeRec(detTypeRec);

  /* uncomment these lines to use diamond constrain */
//   Double_t posdiam[3]={0.03,0.1,0.};
//   Double_t sigdiam[3]={0.01,0.01,10.0};
//   AliESDVertex* diam=new AliESDVertex(posdiam,sigdiam);
//   vertz->SetVtxStart(diam);
//   vert3d->SetVtxStart(diam);
  /* end lines to be uncommented to use diamond constrain */

  Int_t goodz=0,good3d=0;
  // Trigger mask
  ULong64_t spdFO = (1 << 14);
  ULong64_t v0left = (1 << 11);
  ULong64_t v0right = (1 << 12);

  for (Int_t iEvent = 0; iEvent < totev; iEvent++) {
    TArrayF mcVertex(3); 
    runLoader->GetEvent(iEvent);
    runLoader->GetHeader()->GenEventHeader()->PrimaryVertex(mcVertex);
    AliGenPythiaEventHeader *evh=(AliGenPythiaEventHeader*)runLoader->GetHeader()->GenEventHeader();
    Int_t ptype = evh->ProcessType();
    if(optdebug){
      printf("==============================================================\n");
      printf("\nEvent: %d ---- Process Type = %d \n",iEvent,ptype);
    }

    AliStack* stack = runLoader->Stack();
    TTree *treek=(TTree*)runLoader->TreeK();
    Int_t npart = (Int_t)treek->GetEntries();
    if(optdebug) printf("particles  %d\n",npart);

    Double_t dNchdy = 0.;

   // loop on particles to get generated dN/dy
    for(Int_t iPart=0; iPart<npart; iPart++) {
      if(!stack->IsPhysicalPrimary(iPart)) continue;
      TParticle* part = (TParticle*)stack->Particle(iPart);
      if(part->GetPDG()->Charge() == 0) continue;
      Double_t eta=part->Eta();

      if(TMath::Abs(eta)<1.5) dNchdy+=1.; 
    }
    if(optdebug) printf(" dNch/dy = %f\n",dNchdy);
 
    tree->GetEvent(iEvent);

    TTree* cltree = ITSloader->TreeR();
    ULong64_t triggerMask=esd->GetTriggerMask();
    // MB1: SPDFO || V0L || V0R
    Bool_t eventTriggered = (triggerMask & spdFO || ((triggerMask & v0left) || (triggerMask & v0right)));
    AliESDVertex* vtxz = vertz->FindVertexForCurrentEvent(cltree);
    AliESDVertex* vtx3d = vert3d->FindVertexForCurrentEvent(cltree);
    AliMultiplicity *alimult = vert3d->GetMultiplicity();
    Int_t  ntrklets=0;
    Int_t nrecp1=0;
    if(alimult){
      ntrklets=alimult->GetNumberOfTracklets() ;
      nrecp1=ntrklets+alimult->GetNumberOfSingleClusters();
    }
       

    TDirectory *current = gDirectory;
    fint->cd();
    Float_t xnt[23];

    Double_t zz = 0.;
    Double_t zresz = 0.;
    Double_t zdiffz = 0.;

    Int_t ntrkz = 0;
    if(vtxz){
 
      ntrkz = vtxz->GetNContributors();
      if(ntrkz>0)goodz++;
      zz=vtxz->GetZv();
      zresz =vtxz->GetZRes(); // microns
      zdiffz = 10000.*(zz-mcVertex[2]); // microns
    }

    Double_t x3d = 0.;
    Double_t xerr3d = 0.;
    Double_t xdiff3d = 0.;

    Double_t y3d = 0.;
    Double_t yerr3d = 0.;
    Double_t ydiff3d = 0.;

    Double_t z3d = 0.;
    Double_t zerr3d = 0.;
    Double_t zdiff3d = 0.;

    Int_t ntrk3d = 0;
    Bool_t is3d=kFALSE;
    if(vtx3d){

      if(vtx3d->IsFromVertexer3D()) is3d=kTRUE;
      ntrk3d = vtx3d->GetNContributors();
      if(is3d && ntrk3d>0)good3d++;
      x3d = vtx3d->GetXv();
      xerr3d=vtx3d->GetXRes();
      xdiff3d = 10000.*(x3d-mcVertex[0]);  // microns

      y3d = vtx3d->GetYv();
      yerr3d=vtx3d->GetYRes();
      ydiff3d = 10000.*(y3d-mcVertex[1]);  // microns

      z3d = vtx3d->GetZv();
      zerr3d=vtx3d->GetZRes();
      zdiff3d = 10000.*(z3d-mcVertex[2]);  // microns

    }

    xnt[0]=mcVertex[0];//x
    xnt[1]=mcVertex[1];//y
    xnt[2]=mcVertex[2];//z

    xnt[3]=zz;
    xnt[4]=zdiffz;
    xnt[5]=zresz;
    xnt[6]=ntrkz;

    xnt[7]=x3d;
    xnt[8]=xdiff3d;
    xnt[9]=xerr3d;
    xnt[10]=y3d;
    xnt[11]=ydiff3d;
    xnt[12]=yerr3d;
    xnt[13]=z3d;
    xnt[14]=zdiff3d;
    xnt[15]=zerr3d;
    xnt[16]=ntrk3d;

    xnt[17]=dNchdy;
    xnt[18]=float(ntrklets);
    xnt[19]=float(nrecp1);
    xnt[20]=float(ptype);
    xnt[21]=float(is3d);
    xnt[22]=float(eventTriggered);
    nt->Fill(xnt);
    current->cd();
    
    if(optdebug){
      printf("\nVertexerZ:  \tz(cm)=%9.5f \tTracklets=%d \tztrue(cm)=%9.5f \tzdiff(um)=%8.2f\n",zz,ntrkz,mcVertex[2],zdiffz);
      printf("Vertexer3D: \tz(cm)=%9.5f \tTracklets=%d \tztrue(cm)=%9.5f \tzdiff(um)=%8.2f\n",z3d,ntrk3d,mcVertex[2],zdiff3d);
    }
    
  }
  fint->cd();
  nt->Write();
  fint->Close();
  delete fint;
  if(optdebug){
   printf("***********************************************\n");
   printf("Number of Z vertices found= %d\n",goodz);
   printf("efficiency=%f\n",float(goodz)/float(totev));
   printf("Number of 3D vertices found= %d\n",good3d);
   printf("efficiency=%f\n",float(good3d)/float(totev));
  }
  return kTRUE;
}
Commit	Line	Data
f5826889	1	#if !defined(__CINT__) \|\| defined(__MAKECINT__)
	2	#include "TFile.h"
	3	#include "TGeoManager.h"
	4	#include "TInterpreter.h"
	5	#include "TClassTable.h"
	6	#include "TNtuple.h"
	7	#include "TTree.h"
	8	#include "TArrayF.h"
	9	#include "TParticle.h"
	10	#include "AliESD.h"
	11	#include "AliGenPythiaEventHeader.h"
	12	#include "AliTracker.h"
	13	#include "AliHeader.h"
	14	#include "AliITSLoader.h"
	15	#include "AliVertexerTracks.h"
	16	#include "AliCDBManager.h"
	17	#include "AliGeomManager.h"
fdc48e5f	18	#include "AliITSDetTypeRec.h"
f5826889	19	#include "AliITSVertexer3D.h"
	20	#include "AliITSVertexerZ.h"
	21	#include "AliESDVertex.h"
7d766abb	22	#include "AliESDEvent.h"
f5826889	23	#include "AliRun.h"
	24	#include "AliRunLoader.h"
	25	#include "AliGenEventHeader.h"
	26	#include "AliStack.h"
	27	#endif
	28
	29	/* $Id$ */
	30
5951029f	31	Bool_t DoVerticesSPD(Int_t pileupalgo=1, Int_t optdebug=0){
792b611a	32
f5826889	33	TFile *fint = new TFile("VertexSPD.root","recreate");
7d766abb	34	TNtuple *nt = new TNtuple("ntvert","vertices","xtrue:ytrue:ztrue:zZ:zdiffZ:zerrZ:ntrksZ:x3D:xdiff3D:xerr3D:y3D:ydiff3D:yerr3D:z3D:zdiff3D:zerr3D:ntrks3D:dndy:ntrklets:nrp1:ptyp:is3D:isTriggered");
f5826889	35
	36	if (gClassTable->GetID("AliRun") < 0) {
	37	gInterpreter->ExecuteMacro("loadlibs.C");
	38	}
	39	// Set OCDB if needed
	40	AliCDBManager* man = AliCDBManager::Instance();
	41	if (!man->IsDefaultStorageSet()) {
	42	printf("Setting a local default storage and run number 0\n");
162637e4	43	man->SetDefaultStorage("local://$ALICE_ROOT/OCDB");
f5826889	44	man->SetRun(0);
	45	}
	46	else {
	47	printf("Using deafult storage \n");
	48	}
	49
	50	// retrives geometry
	51	if(!gGeoManager){
	52	AliGeomManager::LoadGeometry("geometry.root");
	53	}
3714ff25	54	AliGeomManager::ApplyAlignObjsFromCDB("ITS");
f5826889	55
	56	AliRunLoader* runLoader = AliRunLoader::Open("galice.root");
	57	if (!runLoader) {
	58	Error("DoVertices", "getting run loader from file %s failed",
	59	"galice.root");
	60	return kFALSE;
	61	}
	62	runLoader->LoadgAlice();
	63	gAlice = runLoader->GetAliRun();
	64	if (!gAlice) {
	65	Error("DoVertices", "no galice object found");
	66	return kFALSE;
	67	}
	68	runLoader->LoadKinematics();
	69	runLoader->LoadHeader();
	70	AliITSLoader* ITSloader = (AliITSLoader*) runLoader->GetLoader("ITSLoader");
	71	ITSloader->LoadRecPoints("read");
	72
3714ff25	73	Int_t totev=runLoader->GetNumberOfEvents();
f5826889	74	if(optdebug) printf("Number of events= %d\n",totev);
f5826889	75
5951029f	76	TFile* esdFile = TFile::Open("AliESDs.root");
	77	if (!esdFile \|\| !esdFile->IsOpen()) {
	78	printf("Error in opening ESD file");
	79	return kFALSE;
	80	}
	81
	82	AliESDEvent * esd = new AliESDEvent;
	83	TTree* tree = (TTree*) esdFile->Get("esdTree");
	84	if (!tree) {
	85	printf("Error: no ESD tree found");
	86	return kFALSE;
	87	}
	88	esd->ReadFromTree(tree);
	89	tree->GetEvent(0);
1a00e14f	90	Int_t fieldkG=(Int_t)(TMath::Abs(esd->GetMagneticField())+0.001);
5951029f	91
5951029f	92	if(fieldkG==5){
7d766abb	93	TGeoGlobalMagField::Instance()->SetField(new AliMagF("Maps","Maps", 2, 1., 1., 10., AliMagF::k5kG));
5951029f	94	}else if(fieldkG==2){
7d766abb	95	TGeoGlobalMagField::Instance()->SetField(new AliMagF("Maps","Maps", 2, 1., 1., 10., AliMagF::k2kG));
	96	}else{
	97	TGeoGlobalMagField::Instance()->SetField(new AliMagF("Maps","Maps", 2, 0., 1., 10., AliMagF::k5kG));
	98	}
	99	AliMagF* fld = (AliMagF*)TGeoGlobalMagField::Instance()->GetField();
	100	printf("Magnetic field set to %f\n",-fld->SolenoidField());
5951029f	101
5951029f	102	AliITSDetTypeRec* detTypeRec = new AliITSDetTypeRec();
f5826889	103	Double_t xnom=0.,ynom=0.;
308c2f7c	104	AliITSVertexerZ *vertz = new AliITSVertexerZ(xnom,ynom);
	105	vertz->Init("default");
	106	AliITSVertexer3D *vert3d = new AliITSVertexer3D();
	107	vert3d->Init("default");
792b611a	108	vert3d->SetWideFiducialRegion(40.,1.);
7d766abb	109	vert3d->SetPileupAlgo(pileupalgo);
792b611a	110	vert3d->PrintStatus();
fdc48e5f	111	vertz->SetDetTypeRec(detTypeRec);
fdc48e5f	112	vert3d->SetDetTypeRec(detTypeRec);
ecce5370	113
	114	/* uncomment these lines to use diamond constrain */
	115	// Double_t posdiam[3]={0.03,0.1,0.};
	116	// Double_t sigdiam[3]={0.01,0.01,10.0};
	117	// AliESDVertex* diam=new AliESDVertex(posdiam,sigdiam);
	118	// vertz->SetVtxStart(diam);
	119	// vert3d->SetVtxStart(diam);
	120	/* end lines to be uncommented to use diamond constrain */
f5826889	121
f5826889	122	Int_t goodz=0,good3d=0;
7d766abb	123	// Trigger mask
	124	ULong64_t spdFO = (1 << 14);
	125	ULong64_t v0left = (1 << 11);
	126	ULong64_t v0right = (1 << 12);
f5826889	127
	128	for (Int_t iEvent = 0; iEvent < totev; iEvent++) {
	129	TArrayF mcVertex(3);
	130	runLoader->GetEvent(iEvent);
	131	runLoader->GetHeader()->GenEventHeader()->PrimaryVertex(mcVertex);
	132	AliGenPythiaEventHeader evh=(AliGenPythiaEventHeader)runLoader->GetHeader()->GenEventHeader();
	133	Int_t ptype = evh->ProcessType();
	134	if(optdebug){
	135	printf("==============================================================\n");
	136	printf("\nEvent: %d ---- Process Type = %d \n",iEvent,ptype);
	137	}
	138
	139	AliStack* stack = runLoader->Stack();
	140	TTree treek=(TTree)runLoader->TreeK();
	141	Int_t npart = (Int_t)treek->GetEntries();
	142	if(optdebug) printf("particles %d\n",npart);
	143
	144	Double_t dNchdy = 0.;
	145
ecce5370	146	// loop on particles to get generated dN/dy
	147	for(Int_t iPart=0; iPart<npart; iPart++) {
	148	if(!stack->IsPhysicalPrimary(iPart)) continue;
	149	TParticle* part = (TParticle*)stack->Particle(iPart);
	150	if(part->GetPDG()->Charge() == 0) continue;
	151	Double_t eta=part->Eta();
f5826889	152
ecce5370	153	if(TMath::Abs(eta)<1.5) dNchdy+=1.;
f5826889	154	}
	155	if(optdebug) printf(" dNch/dy = %f\n",dNchdy);
	156
7d766abb	157	tree->GetEvent(iEvent);
308c2f7c	158
7d766abb	159	TTree* cltree = ITSloader->TreeR();
	160	ULong64_t triggerMask=esd->GetTriggerMask();
	161	// MB1: SPDFO \|\| V0L \|\| V0R
	162	Bool_t eventTriggered = (triggerMask & spdFO \|\| ((triggerMask & v0left) \|\| (triggerMask & v0right)));
308c2f7c	163	AliESDVertex* vtxz = vertz->FindVertexForCurrentEvent(cltree);
ecce5370	164	AliESDVertex* vtx3d = vert3d->FindVertexForCurrentEvent(cltree);
ecce5370	165	AliMultiplicity *alimult = vert3d->GetMultiplicity();
792b611a	166	Int_t ntrklets=0;
	167	Int_t nrecp1=0;
	168	if(alimult){
	169	ntrklets=alimult->GetNumberOfTracklets() ;
	170	nrecp1=ntrklets+alimult->GetNumberOfSingleClusters();
f5826889	171	}
792b611a	172
ecce5370	173
f5826889	174
	175	TDirectory *current = gDirectory;
	176	fint->cd();
7d766abb	177	Float_t xnt[23];
f5826889	178
	179	Double_t zz = 0.;
	180	Double_t zresz = 0.;
	181	Double_t zdiffz = 0.;
	182
	183	Int_t ntrkz = 0;
	184	if(vtxz){
	185
	186	ntrkz = vtxz->GetNContributors();
	187	if(ntrkz>0)goodz++;
	188	zz=vtxz->GetZv();
	189	zresz =vtxz->GetZRes(); // microns
	190	zdiffz = 10000.*(zz-mcVertex[2]); // microns
	191	}
	192
	193	Double_t x3d = 0.;
	194	Double_t xerr3d = 0.;
	195	Double_t xdiff3d = 0.;
	196
	197	Double_t y3d = 0.;
	198	Double_t yerr3d = 0.;
	199	Double_t ydiff3d = 0.;
	200
	201	Double_t z3d = 0.;
	202	Double_t zerr3d = 0.;
	203	Double_t zdiff3d = 0.;
	204
	205	Int_t ntrk3d = 0;
6b4d9537	206	Bool_t is3d=kFALSE;
f5826889	207	if(vtx3d){
7d766abb	208
6b4d9537	209	if(vtx3d->IsFromVertexer3D()) is3d=kTRUE;
f5826889	210	ntrk3d = vtx3d->GetNContributors();
792b611a	211	if(is3d && ntrk3d>0)good3d++;
f5826889	212	x3d = vtx3d->GetXv();
	213	xerr3d=vtx3d->GetXRes();
	214	xdiff3d = 10000.*(x3d-mcVertex[0]); // microns
	215
	216	y3d = vtx3d->GetYv();
	217	yerr3d=vtx3d->GetYRes();
	218	ydiff3d = 10000.*(y3d-mcVertex[1]); // microns
	219
	220	z3d = vtx3d->GetZv();
	221	zerr3d=vtx3d->GetZRes();
	222	zdiff3d = 10000.*(z3d-mcVertex[2]); // microns
	223
	224	}
	225
	226	xnt[0]=mcVertex[0];//x
	227	xnt[1]=mcVertex[1];//y
	228	xnt[2]=mcVertex[2];//z
	229
	230	xnt[3]=zz;
	231	xnt[4]=zdiffz;
	232	xnt[5]=zresz;
	233	xnt[6]=ntrkz;
	234
	235	xnt[7]=x3d;
	236	xnt[8]=xdiff3d;
	237	xnt[9]=xerr3d;
8686a665	238	xnt[10]=y3d;
f5826889	239	xnt[11]=ydiff3d;
	240	xnt[12]=yerr3d;
	241	xnt[13]=z3d;
	242	xnt[14]=zdiff3d;
	243	xnt[15]=zerr3d;
	244	xnt[16]=ntrk3d;
	245
	246	xnt[17]=dNchdy;
	247	xnt[18]=float(ntrklets);
	248	xnt[19]=float(nrecp1);
	249	xnt[20]=float(ptype);
792b611a	250	xnt[21]=float(is3d);
7d766abb	251	xnt[22]=float(eventTriggered);
f5826889	252	nt->Fill(xnt);
	253	current->cd();
	254
	255	if(optdebug){
	256	printf("\nVertexerZ: \tz(cm)=%9.5f \tTracklets=%d \tztrue(cm)=%9.5f \tzdiff(um)=%8.2f\n",zz,ntrkz,mcVertex[2],zdiffz);
	257	printf("Vertexer3D: \tz(cm)=%9.5f \tTracklets=%d \tztrue(cm)=%9.5f \tzdiff(um)=%8.2f\n",z3d,ntrk3d,mcVertex[2],zdiff3d);
	258	}
	259
	260	}
	261	fint->cd();
	262	nt->Write();
	263	fint->Close();
	264	delete fint;
	265	if(optdebug){
	266	printf("***********************************************\n");
	267	printf("Number of Z vertices found= %d\n",goodz);
	268	printf("efficiency=%f\n",float(goodz)/float(totev));
	269	printf("Number of 3D vertices found= %d\n",good3d);
	270	printf("efficiency=%f\n",float(good3d)/float(totev));
	271	}
	272	return kTRUE;
	273	}