[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 "AliITSVertexer3D.h"
#include "AliITSVertexerZ.h"
#include "AliESDVertex.h"
#include "AliRun.h"
#include "AliRunLoader.h"
#include "AliGenEventHeader.h"
#include "AliStack.h"
#endif

/*  $Id$    */

Bool_t DoVerticesSPD(Int_t optdebug=1){
  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");

  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");
    man->SetRun(0);
  }
  else {
    printf("Using deafult storage \n");
  }
 
  // retrives geometry 
  if(!gGeoManager){
    AliGeomManager::LoadGeometry("geometry.root");
  }

  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");

  AliMagF * magf = gAlice->Field();
  AliTracker::SetFieldMap(magf,kTRUE);
  if(optdebug) printf("MagneticField=%f\n",AliTracker::GetBz());
  
  Int_t totev=runLoader->GetNumberOfEvents();
  if(optdebug)  printf("Number of events= %d\n",totev);

  
  Double_t xnom=0.,ynom=0.;
  
  AliITSVertexerZ *vertz = new AliITSVertexerZ(xnom,ynom);
  vertz->Init("default");
  AliITSVertexer3D *vert3d = new AliITSVertexer3D();
  vert3d->Init("default");

  /* 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;

  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);
 
    TTree* cltree = ITSloader->TreeR();

    AliESDVertex* vtxz = vertz->FindVertexForCurrentEvent(cltree);
    AliESDVertex* vtx3d = vert3d->FindVertexForCurrentEvent(cltree);

    AliMultiplicity *alimult = vert3d->GetMultiplicity();
    Int_t ntrklets=0,nrecp1=0;
    if(alimult) {
      nrecp1=alimult->GetNumberOfTracklets() ;
      ntrklets = alimult->GetNumberOfTracklets();
      for(Int_t l=0;l<alimult->GetNumberOfTracklets();l++){
	if(alimult->GetDeltaPhi(l)<-9998.) ntrklets--;
      }
    }

    
    TDirectory *current = gDirectory;
    fint->cd();
    Float_t xnt[21];

    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;
    if(vtx3d){

      ntrk3d = vtx3d->GetNContributors();
      if(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[11]=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);
    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"
	18	#include "AliITSVertexer3D.h"
	19	#include "AliITSVertexerZ.h"
	20	#include "AliESDVertex.h"
	21	#include "AliRun.h"
	22	#include "AliRunLoader.h"
	23	#include "AliGenEventHeader.h"
	24	#include "AliStack.h"
	25	#endif
	26
	27	/* $Id$ */
	28
	29	Bool_t DoVerticesSPD(Int_t optdebug=1){
	30	TFile *fint = new TFile("VertexSPD.root","recreate");
	31	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");
	32
	33	if (gClassTable->GetID("AliRun") < 0) {
	34	gInterpreter->ExecuteMacro("loadlibs.C");
	35	}
	36	// Set OCDB if needed
	37	AliCDBManager* man = AliCDBManager::Instance();
	38	if (!man->IsDefaultStorageSet()) {
	39	printf("Setting a local default storage and run number 0\n");
	40	man->SetDefaultStorage("local://$ALICE_ROOT");
	41	man->SetRun(0);
	42	}
	43	else {
	44	printf("Using deafult storage \n");
	45	}
	46
	47	// retrives geometry
	48	if(!gGeoManager){
	49	AliGeomManager::LoadGeometry("geometry.root");
	50	}
	51
	52	AliRunLoader* runLoader = AliRunLoader::Open("galice.root");
	53	if (!runLoader) {
	54	Error("DoVertices", "getting run loader from file %s failed",
	55	"galice.root");
	56	return kFALSE;
	57	}
	58	runLoader->LoadgAlice();
	59	gAlice = runLoader->GetAliRun();
	60	if (!gAlice) {
	61	Error("DoVertices", "no galice object found");
	62	return kFALSE;
	63	}
	64	runLoader->LoadKinematics();
65	runLoader->LoadHeader();
66	AliITSLoader* ITSloader = (AliITSLoader*) runLoader->GetLoader("ITSLoader");
67	ITSloader->LoadRecPoints("read");
68
69	AliMagF * magf = gAlice->Field();
70	AliTracker::SetFieldMap(magf,kTRUE);
71	if(optdebug) printf("MagneticField=%f\n",AliTracker::GetBz());
72
73	Int_t totev=runLoader->GetNumberOfEvents();
74	if(optdebug) printf("Number of events= %d\n",totev);
75
76
f5826889	77	Double_t xnom=0.,ynom=0.;
ecce5370	78
308c2f7c	79	AliITSVertexerZ *vertz = new AliITSVertexerZ(xnom,ynom);
	80	vertz->Init("default");
	81	AliITSVertexer3D *vert3d = new AliITSVertexer3D();
	82	vert3d->Init("default");
ecce5370	83
	84	/* uncomment these lines to use diamond constrain */
	85	// Double_t posdiam[3]={0.03,0.1,0.};
	86	// Double_t sigdiam[3]={0.01,0.01,10.0};
	87	// AliESDVertex* diam=new AliESDVertex(posdiam,sigdiam);
	88	// vertz->SetVtxStart(diam);
	89	// vert3d->SetVtxStart(diam);
	90	/* end lines to be uncommented to use diamond constrain */
f5826889	91
	92	Int_t goodz=0,good3d=0;
	93
	94	for (Int_t iEvent = 0; iEvent < totev; iEvent++) {
	95	TArrayF mcVertex(3);
	96	runLoader->GetEvent(iEvent);
	97	runLoader->GetHeader()->GenEventHeader()->PrimaryVertex(mcVertex);
	98	AliGenPythiaEventHeader evh=(AliGenPythiaEventHeader)runLoader->GetHeader()->GenEventHeader();
	99	Int_t ptype = evh->ProcessType();
	100	if(optdebug){
	101	printf("==============================================================\n");
	102	printf("\nEvent: %d ---- Process Type = %d \n",iEvent,ptype);
	103	}
	104
	105	AliStack* stack = runLoader->Stack();
	106	TTree treek=(TTree)runLoader->TreeK();
	107	Int_t npart = (Int_t)treek->GetEntries();
	108	if(optdebug) printf("particles %d\n",npart);
	109
	110	Double_t dNchdy = 0.;
	111
ecce5370	112	// loop on particles to get generated dN/dy
	113	for(Int_t iPart=0; iPart<npart; iPart++) {
	114	if(!stack->IsPhysicalPrimary(iPart)) continue;
	115	TParticle* part = (TParticle*)stack->Particle(iPart);
	116	if(part->GetPDG()->Charge() == 0) continue;
	117	Double_t eta=part->Eta();
f5826889	118
ecce5370	119	if(TMath::Abs(eta)<1.5) dNchdy+=1.;
f5826889	120	}
	121	if(optdebug) printf(" dNch/dy = %f\n",dNchdy);
	122
308c2f7c	123	TTree* cltree = ITSloader->TreeR();
	124
	125	AliESDVertex* vtxz = vertz->FindVertexForCurrentEvent(cltree);
ecce5370	126	AliESDVertex* vtx3d = vert3d->FindVertexForCurrentEvent(cltree);
	127
	128	AliMultiplicity *alimult = vert3d->GetMultiplicity();
f5826889	129	Int_t ntrklets=0,nrecp1=0;
	130	if(alimult) {
	131	nrecp1=alimult->GetNumberOfTracklets() ;
	132	ntrklets = alimult->GetNumberOfTracklets();
	133	for(Int_t l=0;l<alimult->GetNumberOfTracklets();l++){
	134	if(alimult->GetDeltaPhi(l)<-9998.) ntrklets--;
	135	}
	136	}
	137
ecce5370	138
ecce5370	139
f5826889	140
	141	TDirectory *current = gDirectory;
	142	fint->cd();
	143	Float_t xnt[21];
	144
	145	Double_t zz = 0.;
	146	Double_t zresz = 0.;
	147	Double_t zdiffz = 0.;
	148
	149	Int_t ntrkz = 0;
	150	if(vtxz){
	151
	152	ntrkz = vtxz->GetNContributors();
	153	if(ntrkz>0)goodz++;
	154	zz=vtxz->GetZv();
	155	zresz =vtxz->GetZRes(); // microns
	156	zdiffz = 10000.*(zz-mcVertex[2]); // microns
	157	}
	158
	159	Double_t x3d = 0.;
	160	Double_t xerr3d = 0.;
	161	Double_t xdiff3d = 0.;
	162
	163	Double_t y3d = 0.;
	164	Double_t yerr3d = 0.;
	165	Double_t ydiff3d = 0.;
	166
	167	Double_t z3d = 0.;
	168	Double_t zerr3d = 0.;
	169	Double_t zdiff3d = 0.;
	170
	171	Int_t ntrk3d = 0;
	172	if(vtx3d){
	173
	174	ntrk3d = vtx3d->GetNContributors();
	175	if(ntrk3d>0)good3d++;
	176	x3d = vtx3d->GetXv();
	177	xerr3d=vtx3d->GetXRes();
	178	xdiff3d = 10000.*(x3d-mcVertex[0]); // microns
	179
	180	y3d = vtx3d->GetYv();
	181	yerr3d=vtx3d->GetYRes();
	182	ydiff3d = 10000.*(y3d-mcVertex[1]); // microns
	183
	184	z3d = vtx3d->GetZv();
	185	zerr3d=vtx3d->GetZRes();
	186	zdiff3d = 10000.*(z3d-mcVertex[2]); // microns
	187
	188	}
	189
	190	xnt[0]=mcVertex[0];//x
	191	xnt[1]=mcVertex[1];//y
	192	xnt[2]=mcVertex[2];//z
	193
	194	xnt[3]=zz;
	195	xnt[4]=zdiffz;
	196	xnt[5]=zresz;
	197	xnt[6]=ntrkz;
	198
	199	xnt[7]=x3d;
	200	xnt[8]=xdiff3d;
	201	xnt[9]=xerr3d;
	202	xnt[11]=y3d;
	203	xnt[11]=ydiff3d;
204	xnt[12]=yerr3d;
205	xnt[13]=z3d;
206	xnt[14]=zdiff3d;
207	xnt[15]=zerr3d;
208	xnt[16]=ntrk3d;
209
210	xnt[17]=dNchdy;
211	xnt[18]=float(ntrklets);
212	xnt[19]=float(nrecp1);
213	xnt[20]=float(ptype);
214	nt->Fill(xnt);
215	current->cd();
216
217	if(optdebug){
218	printf("\nVertexerZ: \tz(cm)=%9.5f \tTracklets=%d \tztrue(cm)=%9.5f \tzdiff(um)=%8.2f\n",zz,ntrkz,mcVertex[2],zdiffz);
219	printf("Vertexer3D: \tz(cm)=%9.5f \tTracklets=%d \tztrue(cm)=%9.5f \tzdiff(um)=%8.2f\n",z3d,ntrk3d,mcVertex[2],zdiff3d);
220	}
221
222	}
223	fint->cd();
224	nt->Write();
225	fint->Close();
226	delete fint;
227	if(optdebug){
228	printf("***********************************************\n");
229	printf("Number of Z vertices found= %d\n",goodz);
230	printf("efficiency=%f\n",float(goodz)/float(totev));
231	printf("Number of 3D vertices found= %d\n",good3d);
232	printf("efficiency=%f\n",float(good3d)/float(totev));
233	}
234	return kTRUE;
235	}