[u/mrichter/AliRoot.git] / ITS / AliITSVertexer.cxx

#include "AliLog.h"
#include "AliMultiplicity.h"
#include "AliITSgeomTGeo.h"
#include "AliITSVertexer.h"
#include "AliITSLoader.h"
#include "AliITSMultReconstructor.h"
#include "AliITSRecPointContainer.h"

const Float_t AliITSVertexer::fgkPipeRadius = 3.0;

ClassImp(AliITSVertexer)

//////////////////////////////////////////////////////////////////////
// Base class for primary vertex reconstruction                     //
// AliESDVertexer is a class for full 3D primary vertex finding     //
// derived classes: AliITSVertexerIons AliITSvertexer3D             //
//                  AliITSVertexerCosmics                           //
//////////////////////////////////////////////////////////////////////

/* $Id$ */

//______________________________________________________________________
AliITSVertexer::AliITSVertexer():AliVertexer(),
fLadders(), 
fLadOnLay2(0),
fComputeMultiplicity(kFALSE),
fDetTypeRec(NULL),
fMinTrackletsForPilup(0),
fIsPileup(0),
fNTrpuv(-2),
fZpuv(-9999999.),
fNoVertices(0),
fVertArray(NULL),
fFirstEvent(0),
fLastEvent(-1)
{
  // Default Constructor
  SetLaddersOnLayer2();
  SetMinTrackletsForPilup();
  for(Int_t i=0; i<kNSPDMod;i++) fUseModule[i]=kTRUE;
}

//______________________________________________________________________
AliITSVertexer::~AliITSVertexer() {
  // Destructor
  if(fLadders) delete [] fLadders;
  if (fNoVertices > 0){
    delete []fVertArray;
    fVertArray = NULL;
    fNoVertices = 0;
  }
}

//______________________________________________________________________
void AliITSVertexer::ResetVertex(){
  // Resets vertex related data members
  if(fNoVertices > 0){
    if(fVertArray) delete []fVertArray;
    fVertArray = NULL;
    fNoVertices = 0;
  }
  fIsPileup=kFALSE;
  fNTrpuv=-2;
  fZpuv=-99999.;

}
//______________________________________________________________________
void AliITSVertexer::FindMultiplicity(TTree *itsClusterTree){
  // Invokes AliITSMultReconstructor to determine the
  // charged multiplicity in the pixel layers
  if(fMult){delete fMult; fMult = 0;}

  Bool_t success=kTRUE;
  Bool_t cosmics=kFALSE; 
  if(!fCurrentVertex)success=kFALSE;
  if(fCurrentVertex && fCurrentVertex->GetNContributors()<1)success=kFALSE;
  if(fCurrentVertex && strstr(fCurrentVertex->GetTitle(),"cosmics")) {
    success=kFALSE; 
    cosmics=kTRUE;
  } 

  // get the FastOr bit mask
  TBits fastOrFiredMap = fDetTypeRec->GetFastOrFiredMap();
  TBits firedChipMap = fDetTypeRec->GetFiredChipMap(itsClusterTree);
 
  AliITSMultReconstructor multReco;

  if(!success){
    if(!cosmics) {     
      AliDebug(1,"Tracklets multiplicity not determined because the primary vertex was not found");
      AliDebug(1,"Just counting the number of cluster-fired chips on the SPD layers");
    }
    if (!itsClusterTree) {
      AliError(" Invalid ITS cluster tree !\n");
      return;
    }
    multReco.LoadClusterFiredChips(itsClusterTree);
    Short_t nfcL1 = multReco.GetNFiredChips(0);
    Short_t nfcL2 = multReco.GetNFiredChips(1);
    fMult = new AliMultiplicity(0,0,0,0,0,0,0,0,0,0,nfcL1,nfcL2,fastOrFiredMap);
    fMult->SetFiredChipMap(firedChipMap);
    AliITSRecPointContainer* rcont = AliITSRecPointContainer::Instance();
    fMult->SetITSClusters(0,rcont->GetNClustersInLayer(1,itsClusterTree));
    for(Int_t kk=2;kk<=6;kk++){
      fMult->SetITSClusters(kk-1,rcont->GetNClustersInLayerFast(kk));
    }
    return;
  }

  if (!itsClusterTree) {
    AliError(" Invalid ITS cluster tree !\n");
    return;
  }
  Double_t vtx[3];
  fCurrentVertex->GetXYZ(vtx);
  Float_t vtxf[3];
  for(Int_t i=0;i<3;i++)vtxf[i]=vtx[i];
  multReco.SetHistOn(kFALSE);
  multReco.Reconstruct(itsClusterTree,vtxf,vtxf);
  Int_t notracks=multReco.GetNTracklets();
  Float_t *tht = new Float_t [notracks];
  Float_t *phi = new Float_t [notracks];
  Float_t *dtht = new Float_t [notracks];
  Float_t *dphi = new Float_t [notracks];
  Int_t *labels = new Int_t[notracks];
  Int_t *labelsL2 = new Int_t[notracks];
  for(Int_t i=0;i<multReco.GetNTracklets();i++){
    tht[i] = multReco.GetTracklet(i)[0];
    phi[i] =  multReco.GetTracklet(i)[1];
    dtht[i] = multReco.GetTracklet(i)[3];
    dphi[i] = multReco.GetTracklet(i)[2];
    labels[i] = static_cast<Int_t>(multReco.GetTracklet(i)[4]);
    labelsL2[i] = static_cast<Int_t>(multReco.GetTracklet(i)[5]);
  }
  Int_t nosingleclus=multReco.GetNSingleClusters();
  Float_t *ths = new Float_t [nosingleclus];
  Float_t *phs = new Float_t [nosingleclus];
  for(Int_t i=0;i<nosingleclus;i++){
    ths[i] = multReco.GetCluster(i)[0];
    phs[i] = multReco.GetCluster(i)[1];
  }
  Short_t nfcL1 = multReco.GetNFiredChips(0);
  Short_t nfcL2 = multReco.GetNFiredChips(1);
  fMult = new AliMultiplicity(notracks,tht,phi,dtht,dphi,labels,labelsL2,nosingleclus,ths,phs,nfcL1,nfcL2,fastOrFiredMap);
  fMult->SetFiredChipMap(firedChipMap);
  AliITSRecPointContainer* rcont = AliITSRecPointContainer::Instance();
  fMult->SetITSClusters(0,rcont->GetNClustersInLayer(1,itsClusterTree));
  for(Int_t kk=2;kk<=6;kk++){
    fMult->SetITSClusters(kk-1,rcont->GetNClustersInLayerFast(kk));
  }
  delete [] tht;
  delete [] phi;
  delete [] dtht;
  delete [] dphi;
  delete [] ths;
  delete [] phs;
  delete [] labels;
  delete [] labelsL2;

  return;
}

//______________________________________________________________________
void AliITSVertexer::SetLaddersOnLayer2(Int_t ladwid){
  // Calculates the array of ladders on layer 2 to be used with a 
  // given ladder on layer 1
  fLadOnLay2=ladwid;
  Int_t ladtot1=AliITSgeomTGeo::GetNLadders(1);
  if(fLadders) delete [] fLadders;
  fLadders=new UShort_t[ladtot1];


  Double_t pos1[3],pos2[3];
  Int_t mod1=AliITSgeomTGeo::GetModuleIndex(2,1,1);
  AliITSgeomTGeo::GetTranslation(mod1,pos1);  // position of the module in the MRS 
  Double_t phi0=TMath::ATan2(pos1[1],pos1[0]);
  if(phi0<0) phi0+=2*TMath::Pi();
  Int_t mod2=AliITSgeomTGeo::GetModuleIndex(2,2,1);
  AliITSgeomTGeo::GetTranslation(mod2,pos2);
  Double_t phi2=TMath::ATan2(pos2[1],pos2[0]); 
  if(phi2<0) phi2+=2*TMath::Pi();
  Double_t deltaPhi= phi0-phi2; // phi width of a layer2 module

  for(Int_t i= 0; i<ladtot1;i++){
    Int_t modlad= AliITSgeomTGeo::GetModuleIndex(1,i+1,1);
    Double_t posmod[3];
    AliITSgeomTGeo::GetTranslation(modlad,posmod);
    Double_t phimod=TMath::ATan2(posmod[1],posmod[0]); 
    if(phimod<0) phimod+=2*TMath::Pi();
    Double_t phi1= phimod+deltaPhi*double(fLadOnLay2);
    if(phi1<0) phi1+=2*TMath::Pi();
    if(phi1>2*TMath::Pi()) phi1-=2*TMath::Pi();
    Double_t philad1=phi0-phi1;
    UShort_t lad1;
    Double_t ladder1=(philad1)/(deltaPhi) +1.; 
    if(ladder1<1){ladder1=40+ladder1;}
    lad1=int(ladder1+0.5);
    fLadders[i]=lad1;
  }
}

#include "AliRunLoader.h"

//______________________________________________________________________
void AliITSVertexer::Init(TString filename){
  // Initialize the vertexer in case of
  // analysis of an entire file
  AliRunLoader *rl = AliRunLoader::Instance();
  if(!rl){
    Fatal("AliITSVertexer","Run Loader not found");
  }
  if (fLastEvent < 0) SetLastEvent(rl->GetNumberOfEvents()-1);

  AliITSLoader* itsloader =  (AliITSLoader*) rl->GetLoader("ITSLoader");
  if(!filename.Contains("default"))itsloader->SetVerticesFileName(filename);
  if(!filename.Contains("null"))itsloader->LoadVertices("recreate");
}

//______________________________________________________________________
void AliITSVertexer::WriteCurrentVertex(){
  // Write the current AliVertex object to file fOutFile
  AliRunLoader *rl = AliRunLoader::Instance();
  AliITSLoader* itsLoader =  (AliITSLoader*) rl->GetLoader("ITSLoader");
  fCurrentVertex->SetName("Vertex");
  //  const char * name = fCurrentVertex->GetName();
  //  itsLoader->SetVerticesContName(name);
  Int_t rc = itsLoader->PostVertex(fCurrentVertex);
  rc = itsLoader->WriteVertices();
}

//______________________________________________________________________
void AliITSVertexer::FindVertices(){
  // computes the vertices of the events in the range FirstEvent - LastEvent

  AliRunLoader *rl = AliRunLoader::Instance();
  AliITSLoader* itsloader =  (AliITSLoader*) rl->GetLoader("ITSLoader");
  itsloader->LoadRecPoints("read");
  for(Int_t i=fFirstEvent;i<=fLastEvent;i++){
    rl->GetEvent(i);
    TTree* cltree = itsloader->TreeR();
    FindVertexForCurrentEvent(cltree);
    if(fCurrentVertex){
      WriteCurrentVertex();
    }
    else {
      AliDebug(1,Form("Vertex not found for event %d",i));
    }
  }
}
Commit	Line	Data
308c2f7c	1	#include "AliLog.h"
308c2f7c	2	#include "AliMultiplicity.h"
32e63e47	3	#include "AliITSgeomTGeo.h"
27167524	4	#include "AliITSVertexer.h"
27167524	5	#include "AliITSLoader.h"
27167524	6	#include "AliITSMultReconstructor.h"
d325d83f	7	#include "AliITSRecPointContainer.h"
27167524	8
27167524	9	const Float_t AliITSVertexer::fgkPipeRadius = 3.0;
c5f0f3c1	10
	11	ClassImp(AliITSVertexer)
	12
	13	//////////////////////////////////////////////////////////////////////
	14	// Base class for primary vertex reconstruction //
d681bb2d	15	// AliESDVertexer is a class for full 3D primary vertex finding //
3acc14d5	16	// derived classes: AliITSVertexerIons AliITSvertexer3D //
3acc14d5	17	// AliITSVertexerCosmics //
c5f0f3c1	18	//////////////////////////////////////////////////////////////////////
c5f0f3c1	19
8c42830a	20	/* $Id$ */
8c42830a	21
c5f0f3c1	22	//______________________________________________________________________
27167524	23	AliITSVertexer::AliITSVertexer():AliVertexer(),
27167524	24	fLadders(),
308c2f7c	25	fLadOnLay2(0),
1ff24d0a	26	fComputeMultiplicity(kFALSE),
06a7cbee	27	fDetTypeRec(NULL),
8c32ba44	28	fMinTrackletsForPilup(0),
	29	fIsPileup(0),
	30	fNTrpuv(-2),
	31	fZpuv(-9999999.),
6b4d9537	32	fNoVertices(0),
6b4d9537	33	fVertArray(NULL),
308c2f7c	34	fFirstEvent(0),
06a7cbee	35	fLastEvent(-1)
27167524	36	{
308c2f7c	37	// Default Constructor
27167524	38	SetLaddersOnLayer2();
8c32ba44	39	SetMinTrackletsForPilup();
8c42830a	40	for(Int_t i=0; i<kNSPDMod;i++) fUseModule[i]=kTRUE;
c5f0f3c1	41	}
c5f0f3c1	42
27167524	43	//______________________________________________________________________
	44	AliITSVertexer::~AliITSVertexer() {
	45	// Destructor
6b4d9537	46	if(fLadders) delete [] fLadders;
	47	if (fNoVertices > 0){
	48	delete []fVertArray;
	49	fVertArray = NULL;
	50	fNoVertices = 0;
	51	}
27167524	52	}
27167524	53
6b4d9537	54	//______________________________________________________________________
	55	void AliITSVertexer::ResetVertex(){
	56	// Resets vertex related data members
	57	if(fNoVertices > 0){
	58	if(fVertArray) delete []fVertArray;
	59	fVertArray = NULL;
	60	fNoVertices = 0;
	61	}
	62	fIsPileup=kFALSE;
	63	fNTrpuv=-2;
	64	fZpuv=-99999.;
	65
	66	}
32e449be	67	//______________________________________________________________________
308c2f7c	68	void AliITSVertexer::FindMultiplicity(TTree *itsClusterTree){
32e449be	69	// Invokes AliITSMultReconstructor to determine the
	70	// charged multiplicity in the pixel layers
	71	if(fMult){delete fMult; fMult = 0;}
6873ed43	72
32e449be	73	Bool_t success=kTRUE;
52b373f6	74	Bool_t cosmics=kFALSE;
32e449be	75	if(!fCurrentVertex)success=kFALSE;
32e449be	76	if(fCurrentVertex && fCurrentVertex->GetNContributors()<1)success=kFALSE;
52b373f6	77	if(fCurrentVertex && strstr(fCurrentVertex->GetTitle(),"cosmics")) {
	78	success=kFALSE;
	79	cosmics=kTRUE;
	80	}
9b373e9a	81
ff44c37c	82	// get the FastOr bit mask
ff44c37c	83	TBits fastOrFiredMap = fDetTypeRec->GetFastOrFiredMap();
adc4b00f	84	TBits firedChipMap = fDetTypeRec->GetFiredChipMap(itsClusterTree);
adc4b00f	85
9b373e9a	86	AliITSMultReconstructor multReco;
9b373e9a	87
32e449be	88	if(!success){
52b373f6	89	if(!cosmics) {
3b1d8321	90	AliDebug(1,"Tracklets multiplicity not determined because the primary vertex was not found");
3b1d8321	91	AliDebug(1,"Just counting the number of cluster-fired chips on the SPD layers");
52b373f6	92	}
9b373e9a	93	if (!itsClusterTree) {
	94	AliError(" Invalid ITS cluster tree !\n");
	95	return;
	96	}
	97	multReco.LoadClusterFiredChips(itsClusterTree);
	98	Short_t nfcL1 = multReco.GetNFiredChips(0);
	99	Short_t nfcL2 = multReco.GetNFiredChips(1);
fa9ed8e9	100	fMult = new AliMultiplicity(0,0,0,0,0,0,0,0,0,0,nfcL1,nfcL2,fastOrFiredMap);
adc4b00f	101	fMult->SetFiredChipMap(firedChipMap);
d325d83f	102	AliITSRecPointContainer* rcont = AliITSRecPointContainer::Instance();
	103	fMult->SetITSClusters(0,rcont->GetNClustersInLayer(1,itsClusterTree));
	104	for(Int_t kk=2;kk<=6;kk++){
	105	fMult->SetITSClusters(kk-1,rcont->GetNClustersInLayerFast(kk));
	106	}
32e449be	107	return;
32e449be	108	}
308c2f7c	109
32e449be	110	if (!itsClusterTree) {
308c2f7c	111	AliError(" Invalid ITS cluster tree !\n");
32e449be	112	return;
	113	}
	114	Double_t vtx[3];
	115	fCurrentVertex->GetXYZ(vtx);
	116	Float_t vtxf[3];
	117	for(Int_t i=0;i<3;i++)vtxf[i]=vtx[i];
9b373e9a	118	multReco.SetHistOn(kFALSE);
	119	multReco.Reconstruct(itsClusterTree,vtxf,vtxf);
	120	Int_t notracks=multReco.GetNTracklets();
968e8539	121	Float_t *tht = new Float_t [notracks];
32e449be	122	Float_t *phi = new Float_t [notracks];
fa9ed8e9	123	Float_t *dtht = new Float_t [notracks];
32e449be	124	Float_t *dphi = new Float_t [notracks];
de4c520e	125	Int_t *labels = new Int_t[notracks];
0939e22a	126	Int_t *labelsL2 = new Int_t[notracks];
9b373e9a	127	for(Int_t i=0;i<multReco.GetNTracklets();i++){
	128	tht[i] = multReco.GetTracklet(i)[0];
	129	phi[i] = multReco.GetTracklet(i)[1];
fa9ed8e9	130	dtht[i] = multReco.GetTracklet(i)[3];
9b373e9a	131	dphi[i] = multReco.GetTracklet(i)[2];
fa9ed8e9	132	labels[i] = static_cast<Int_t>(multReco.GetTracklet(i)[4]);
fa9ed8e9	133	labelsL2[i] = static_cast<Int_t>(multReco.GetTracklet(i)[5]);
32e449be	134	}
9b373e9a	135	Int_t nosingleclus=multReco.GetNSingleClusters();
968e8539	136	Float_t *ths = new Float_t [nosingleclus];
	137	Float_t *phs = new Float_t [nosingleclus];
	138	for(Int_t i=0;i<nosingleclus;i++){
9b373e9a	139	ths[i] = multReco.GetCluster(i)[0];
9b373e9a	140	phs[i] = multReco.GetCluster(i)[1];
968e8539	141	}
9b373e9a	142	Short_t nfcL1 = multReco.GetNFiredChips(0);
9b373e9a	143	Short_t nfcL2 = multReco.GetNFiredChips(1);
fa9ed8e9	144	fMult = new AliMultiplicity(notracks,tht,phi,dtht,dphi,labels,labelsL2,nosingleclus,ths,phs,nfcL1,nfcL2,fastOrFiredMap);
adc4b00f	145	fMult->SetFiredChipMap(firedChipMap);
d325d83f	146	AliITSRecPointContainer* rcont = AliITSRecPointContainer::Instance();
	147	fMult->SetITSClusters(0,rcont->GetNClustersInLayer(1,itsClusterTree));
	148	for(Int_t kk=2;kk<=6;kk++){
	149	fMult->SetITSClusters(kk-1,rcont->GetNClustersInLayerFast(kk));
	150	}
968e8539	151	delete [] tht;
32e449be	152	delete [] phi;
fa9ed8e9	153	delete [] dtht;
32e449be	154	delete [] dphi;
968e8539	155	delete [] ths;
968e8539	156	delete [] phs;
d6fc37c1	157	delete [] labels;
0939e22a	158	delete [] labelsL2;
308c2f7c	159
32e449be	160	return;
32e449be	161	}
c5f0f3c1	162
27167524	163	//______________________________________________________________________
	164	void AliITSVertexer::SetLaddersOnLayer2(Int_t ladwid){
	165	// Calculates the array of ladders on layer 2 to be used with a
	166	// given ladder on layer 1
	167	fLadOnLay2=ladwid;
32e63e47	168	Int_t ladtot1=AliITSgeomTGeo::GetNLadders(1);
27167524	169	if(fLadders) delete [] fLadders;
	170	fLadders=new UShort_t[ladtot1];
	171
	172
	173	Double_t pos1[3],pos2[3];
32e63e47	174	Int_t mod1=AliITSgeomTGeo::GetModuleIndex(2,1,1);
32e63e47	175	AliITSgeomTGeo::GetTranslation(mod1,pos1); // position of the module in the MRS
27167524	176	Double_t phi0=TMath::ATan2(pos1[1],pos1[0]);
27167524	177	if(phi0<0) phi0+=2*TMath::Pi();
32e63e47	178	Int_t mod2=AliITSgeomTGeo::GetModuleIndex(2,2,1);
32e63e47	179	AliITSgeomTGeo::GetTranslation(mod2,pos2);
27167524	180	Double_t phi2=TMath::ATan2(pos2[1],pos2[0]);
	181	if(phi2<0) phi2+=2*TMath::Pi();
	182	Double_t deltaPhi= phi0-phi2; // phi width of a layer2 module
	183
	184	for(Int_t i= 0; i<ladtot1;i++){
32e63e47	185	Int_t modlad= AliITSgeomTGeo::GetModuleIndex(1,i+1,1);
27167524	186	Double_t posmod[3];
32e63e47	187	AliITSgeomTGeo::GetTranslation(modlad,posmod);
27167524	188	Double_t phimod=TMath::ATan2(posmod[1],posmod[0]);
	189	if(phimod<0) phimod+=2*TMath::Pi();
	190	Double_t phi1= phimod+deltaPhi*double(fLadOnLay2);
	191	if(phi1<0) phi1+=2*TMath::Pi();
	192	if(phi1>2TMath::Pi()) phi1-=2TMath::Pi();
	193	Double_t philad1=phi0-phi1;
	194	UShort_t lad1;
	195	Double_t ladder1=(philad1)/(deltaPhi) +1.;
	196	if(ladder1<1){ladder1=40+ladder1;}
	197	lad1=int(ladder1+0.5);
	198	fLadders[i]=lad1;
	199	}
	200	}
	201
308c2f7c	202	#include "AliRunLoader.h"
	203
	204	//______________________________________________________________________
	205	void AliITSVertexer::Init(TString filename){
	206	// Initialize the vertexer in case of
	207	// analysis of an entire file
33c3c91a	208	AliRunLoader *rl = AliRunLoader::Instance();
308c2f7c	209	if(!rl){
	210	Fatal("AliITSVertexer","Run Loader not found");
	211	}
	212	if (fLastEvent < 0) SetLastEvent(rl->GetNumberOfEvents()-1);
	213
	214	AliITSLoader* itsloader = (AliITSLoader*) rl->GetLoader("ITSLoader");
	215	if(!filename.Contains("default"))itsloader->SetVerticesFileName(filename);
	216	if(!filename.Contains("null"))itsloader->LoadVertices("recreate");
	217	}
27167524	218
c5f0f3c1	219	//______________________________________________________________________
	220	void AliITSVertexer::WriteCurrentVertex(){
	221	// Write the current AliVertex object to file fOutFile
33c3c91a	222	AliRunLoader *rl = AliRunLoader::Instance();
41b19549	223	AliITSLoader* itsLoader = (AliITSLoader*) rl->GetLoader("ITSLoader");
88cb7938	224	fCurrentVertex->SetName("Vertex");
88cb7938	225	// const char * name = fCurrentVertex->GetName();
41b19549	226	// itsLoader->SetVerticesContName(name);
	227	Int_t rc = itsLoader->PostVertex(fCurrentVertex);
	228	rc = itsLoader->WriteVertices();
c5f0f3c1	229	}
de4c520e	230
308c2f7c	231	//______________________________________________________________________
	232	void AliITSVertexer::FindVertices(){
	233	// computes the vertices of the events in the range FirstEvent - LastEvent
	234
33c3c91a	235	AliRunLoader *rl = AliRunLoader::Instance();
308c2f7c	236	AliITSLoader* itsloader = (AliITSLoader*) rl->GetLoader("ITSLoader");
	237	itsloader->LoadRecPoints("read");
	238	for(Int_t i=fFirstEvent;i<=fLastEvent;i++){
	239	rl->GetEvent(i);
	240	TTree* cltree = itsloader->TreeR();
	241	FindVertexForCurrentEvent(cltree);
	242	if(fCurrentVertex){
	243	WriteCurrentVertex();
	244	}
	245	else {
	246	AliDebug(1,Form("Vertex not found for event %d",i));
	247	}
	248	}
	249	}