[u/mrichter/AliRoot.git] / MUON / AliMUONRecoCheck.cxx

/**************************************************************************
 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 *                                                                        *
 * Author: The ALICE Off-line Project.                                    *
 * Contributors are mentioned in the code where appropriate.              *
 *                                                                        *
 * Permission to use, copy, modify and distribute this software and its   *
 * documentation strictly for non-commercial purposes is hereby granted   *
 * without fee, provided that the above copyright notice appears in all   *
 * copies and that both the copyright notice and this permission notice   *
 * appear in the supporting documentation. The authors make no claims     *
 * about the suitability of this software for any purpose. It is          *
 * provided "as is" without express or implied warranty.                  *
 **************************************************************************/

//////////////////////////////////////////////////////////////////////////////////////
//                                                                     
// Utility class to check the muon reconstruction. Reconstructed tracks are compared
// to reference tracks. The reference tracks are built from AliTrackReference for the
// hit in chamber (0..9) and from kinematics for the vertex parameters.     
//                                                                      
//////////////////////////////////////////////////////////////////////////////////////


#include <TParticle.h>

#include "AliRun.h" // for gAlice
#include "AliLog.h" 
#include "AliLoader.h" 
#include "AliRunLoader.h" 
#include "AliTrackReference.h"
#include "AliHeader.h"
#include "AliMC.h"
#include "AliStack.h"
#include "AliMUON.h"
#include "AliMUONRecoCheck.h"
#include "AliMUONTrack.h"
#include "AliMUONData.h"
#include "AliMUONConstants.h"

ClassImp(AliMUONRecoCheck)

//_____________________________________________________________________________
AliMUONRecoCheck::AliMUONRecoCheck(Char_t *chLoader)
{
// Constructor
  fMuonTrackRef = new TClonesArray("AliMUONTrack", 10);

  // open the run loader
  fRunLoader = AliRunLoader::Open(chLoader);
  if (!fRunLoader) {
    AliError(Form("no run loader found in file %s","galice.root" ));
    return;
  }
  // initialize loader's
  AliLoader *loader = fRunLoader->GetLoader("MUONLoader");

  // initialize container
  fMUONData  = new AliMUONData(loader,"MUON","MUON");

   // Loading AliRun master
  if (fRunLoader->GetAliRun() == 0x0) fRunLoader->LoadgAlice();

  fRunLoader->LoadKinematics("READ");
  fRunLoader->LoadTrackRefs("READ");
  loader->LoadTracks("READ");

  fReconstructibleTracks = 0; 
  fRecoTracks = 0;
}

//____________________________________________________________________
AliMUONRecoCheck::AliMUONRecoCheck(const AliMUONRecoCheck& rhs)
 : TObject(rhs)
{
// Protected copy constructor

  AliFatal("Not implemented.");
}

//_____________________________________________________________________________
AliMUONRecoCheck::~AliMUONRecoCheck()
{
  fRunLoader->UnloadKinematics();
  fRunLoader->UnloadTrackRefs();
  fRunLoader->UnloadTracks();
  fMuonTrackRef->Delete();
  delete fMuonTrackRef;
  delete fMUONData;
}

//________________________________________________________________________
AliMUONRecoCheck& AliMUONRecoCheck::operator = (const AliMUONRecoCheck& rhs)
{
// Protected assignement operator

  if (this == &rhs) return *this;

  AliFatal("Not implemented.");
    
  return *this;  
}

//_____________________________________________________________________________
void AliMUONRecoCheck::MakeTrackRef()
{
  // Make reconstructible tracks

  AliTrackReference *trackReference;
  AliMUONTrack *muonTrack;
  AliMUONTrackParam *trackParam;
  AliMUONHitForRec *hitForRec;
  Float_t x, y, z, pX, pY, pZ, pYZ;
  Int_t track, trackSave;
  TParticle *particle;   
  Float_t bendingSlope = 0;
  Float_t  nonBendingSlope = 0;
  Float_t inverseBendingMomentum = 0;
  
  TTree* treeTR = fRunLoader->TreeTR();
  if (treeTR == NULL) return;

  TBranch* branch = treeTR->GetBranch("MUON");
  if (branch == NULL) return;

  TClonesArray* trackRefs = 0;
  branch->SetAddress(&trackRefs);
  branch->SetAutoDelete(kTRUE);  

  Int_t nTrackRef = (Int_t)branch->GetEntries();
 
  track = trackSave = -999;
  Bool_t isNewTrack;
  Int_t iHitMin, iChamber;

  trackParam = new AliMUONTrackParam();
  hitForRec = new AliMUONHitForRec();
  muonTrack = new AliMUONTrack();

  for (Int_t iTrackRef  = 0; iTrackRef < nTrackRef; iTrackRef++) {
    branch->GetEntry(iTrackRef);
    
    iHitMin = 0;
    isNewTrack = kTRUE;
    
    if (!trackRefs->GetEntries()) continue; 

    while (isNewTrack) {
      
      for (Int_t iHit = iHitMin; iHit < trackRefs->GetEntries(); iHit++) {
      
	trackReference = (AliTrackReference*)trackRefs->At(iHit);
	x = trackReference->X();
	y = trackReference->Y();
	z = trackReference->Z();
	pX = trackReference->Px();
	pY = trackReference->Py();
	pZ = trackReference->Pz();

	track = trackReference->GetTrack();

	if (track != trackSave && iHit != 0) {
	  iHitMin = iHit;
	  trackSave = track;
	  break;
	}

	// track parameters at hit
	trackParam->SetBendingCoor(y);
	trackParam->SetNonBendingCoor(x);
	trackParam->SetZ(z);
       
	if (TMath::Abs(pZ) > 0) {
	  bendingSlope = pY/pZ;
	  nonBendingSlope = pX/pZ;
	}
	pYZ = TMath::Sqrt(pY*pY+pZ*pZ);
	if (pYZ >0) inverseBendingMomentum = 1/pYZ; 

	trackParam->SetBendingSlope(bendingSlope);
	trackParam->SetNonBendingSlope(nonBendingSlope);
	trackParam->SetInverseBendingMomentum(inverseBendingMomentum);

	hitForRec->SetBendingCoor(y);
	hitForRec->SetNonBendingCoor(x);
	hitForRec->SetZ(z);
	hitForRec->SetBendingReso2(0.0); 
	hitForRec->SetNonBendingReso2(0.0);  
	iChamber = AliMUONConstants::ChamberNumber(z);
	hitForRec->SetChamberNumber(iChamber);

	muonTrack->AddTrackParamAtHit(trackParam);
	muonTrack->AddHitForRecAtHit(hitForRec);
	muonTrack->SetTrackID(track);
	
	trackSave = track;
	if (iHit == trackRefs->GetEntries()-1) isNewTrack = kFALSE;
      }
      
      // track parameters at vertex 
      particle = fRunLoader->GetHeader()->Stack()->Particle(muonTrack->GetTrackID());
      if (particle) {
	x = particle->Vx();
	y = particle->Vy();
	z = particle->Vz();
	pX = particle->Px();
	pY = particle->Py();
	pZ = particle->Pz();

	trackParam->SetBendingCoor(y);
	trackParam->SetNonBendingCoor(x);
	trackParam->SetZ(z);
	if (TMath::Abs(pZ) > 0) {
	  bendingSlope = pY/pZ;
	  nonBendingSlope = pX/pZ;
	}
	pYZ = TMath::Sqrt(pY*pY+pZ*pZ);
	if (pYZ >0) inverseBendingMomentum = 1/pYZ;       
	trackParam->SetBendingSlope(bendingSlope);
	trackParam->SetNonBendingSlope(nonBendingSlope);
	trackParam->SetInverseBendingMomentum(inverseBendingMomentum);
      
	muonTrack->SetTrackParamAtVertex(trackParam);
      }
      
      AddMuonTrackReference(muonTrack);
      muonTrack->ResetTrackParamAtHit();
      muonTrack->ResetHitForRecAtHit();
      
    } // end while isNewTrack
    
  }
  
  CleanMuonTrackRef();
  
  ReconstructibleTracks();

  delete muonTrack;
  delete trackParam;
  delete hitForRec;

}

//____________________________________________________________________________
TClonesArray* AliMUONRecoCheck::GetTrackReco()
{
  // Return TClonesArray of reconstructed tracks

  GetMUONData()->ResetRecTracks();
  GetMUONData()->SetTreeAddress("RT");
  fTrackReco = GetMUONData()->RecTracks(); 
  GetMUONData()->GetRecTracks();
  fRecoTracks = fTrackReco->GetEntriesFast();
  return fTrackReco;
}
//_____________________________________________________________________________
void AliMUONRecoCheck::PrintEvent() const
{
  // debug facility

  AliMUONTrack *track;
  AliMUONHitForRec *hitForRec;
  TClonesArray *  hitForRecAtHit = 0;
  Float_t xRec,yRec,zRec;

  Int_t nTrackRef = fMuonTrackRef->GetEntriesFast();
  
  printf(" ******************************* \n");
  printf(" nb of tracks %d \n",nTrackRef);

  for (Int_t index = 0; index < nTrackRef; index++) {
    track = (AliMUONTrack*)fMuonTrackRef->At(index);
    hitForRecAtHit = track->GetHitForRecAtHit();
    Int_t nTrackHits = hitForRecAtHit->GetEntriesFast();
    printf(" track number %d \n",index);
    for (Int_t iHit = 0; iHit < nTrackHits; iHit++){
      hitForRec = (AliMUONHitForRec*) hitForRecAtHit->At(iHit); 
      xRec  = hitForRec->GetNonBendingCoor();
      yRec  = hitForRec->GetBendingCoor();
      zRec  = hitForRec->GetZ();
      printf("  x,y,z: %f , %f , %f \n",xRec,yRec,zRec);
    }
  }
}

//_____________________________________________________________________________
void AliMUONRecoCheck::ResetTracks() const
{
  if (fMuonTrackRef) fMuonTrackRef->Clear();
}
//_____________________________________________________________________________
void AliMUONRecoCheck::CleanMuonTrackRef()
{
  // Re-calculate hits parameters because two AliTrackReferences are recorded for
  // each chamber (one when particle is entering + one when particle is leaving 
  // the sensitive volume) 

  Float_t maxGasGap = 1.; // cm 
  AliMUONTrack *track, *trackNew;
  AliMUONHitForRec *hitForRec, *hitForRec1, *hitForRec2;
  AliMUONTrackParam *trackParam, *trackParam1, *trackParam2, *trackParamAtVertex;
  TClonesArray *  hitForRecAtHit = 0;
  TClonesArray *  trackParamAtHit = 0;
  Float_t xRec,yRec,zRec;
  Float_t xRec1,yRec1,zRec1;
  Float_t xRec2,yRec2,zRec2;
  Float_t bendingSlope,nonBendingSlope,bendingMomentum;
  Float_t bendingSlope1,nonBendingSlope1,bendingMomentum1;
  Float_t bendingSlope2,nonBendingSlope2,bendingMomentum2;
  TClonesArray *newMuonTrackRef = new TClonesArray("AliMUONTrack", 10);
  Int_t iHit1;
  Int_t iChamber = 0;
  Int_t nRec = 0;
  Int_t nTrackHits = 0;

  hitForRec = new AliMUONHitForRec();
  trackParam = new AliMUONTrackParam();
  trackNew = new AliMUONTrack();

  Int_t nTrackRef = fMuonTrackRef->GetEntriesFast();
  
  for (Int_t index = 0; index < nTrackRef; index++) {
    track = (AliMUONTrack*)fMuonTrackRef->At(index);
    hitForRecAtHit = track->GetHitForRecAtHit();
    trackParamAtHit = track->GetTrackParamAtHit();
    trackParamAtVertex = track->GetTrackParamAtVertex();
    nTrackHits = hitForRecAtHit->GetEntriesFast();
    iHit1 = 0;
    while (iHit1 < nTrackHits) {
      hitForRec1 = (AliMUONHitForRec*) hitForRecAtHit->At(iHit1); 
      trackParam1 = (AliMUONTrackParam*) trackParamAtHit->At(iHit1); 
      xRec1  = hitForRec1->GetNonBendingCoor();
      yRec1  = hitForRec1->GetBendingCoor();
      zRec1  = hitForRec1->GetZ();	
      xRec   = xRec1;
      yRec   = yRec1;
      zRec   = zRec1;
      bendingSlope1 = trackParam1->GetBendingSlope();
      nonBendingSlope1 = trackParam1->GetNonBendingSlope();
      bendingMomentum1 = 0;
      if (TMath::Abs(trackParam1->GetInverseBendingMomentum()) > 0)
	bendingMomentum1 = 1./trackParam1->GetInverseBendingMomentum();
      bendingSlope = bendingSlope1;
      nonBendingSlope = nonBendingSlope1;
      bendingMomentum = bendingMomentum1;
      nRec = 1;  
      for (Int_t iHit2 = iHit1+1; iHit2 < nTrackHits; iHit2++) {
	hitForRec2 = (AliMUONHitForRec*) hitForRecAtHit->At(iHit2); 
	trackParam2 = (AliMUONTrackParam*) trackParamAtHit->At(iHit2); 
	xRec2  = hitForRec2->GetNonBendingCoor();
	yRec2  = hitForRec2->GetBendingCoor();
	zRec2  = hitForRec2->GetZ();	  
	bendingSlope2 = trackParam2->GetBendingSlope();
	nonBendingSlope2 = trackParam2->GetNonBendingSlope();
	bendingMomentum2 = 0;
	if (TMath::Abs(trackParam2->GetInverseBendingMomentum()) > 0)
	  bendingMomentum2 = 1./trackParam2->GetInverseBendingMomentum();
	
	if ( TMath::Abs(zRec2-zRec1) < maxGasGap ) {
	  nRec++;
	  xRec += xRec2;
	  yRec += yRec2;
	  zRec += zRec2;
	  bendingSlope += bendingSlope2;
	  nonBendingSlope += nonBendingSlope2;
	  bendingMomentum += bendingMomentum2;
	  iHit1 = iHit2;
	}
	
      } // end iHit2
      xRec /= (Float_t)nRec;
      yRec /= (Float_t)nRec;
      zRec /= (Float_t)nRec;
      bendingSlope /= (Float_t)nRec;
      nonBendingSlope /= (Float_t)nRec;
      bendingMomentum /= (Float_t)nRec;
      
      hitForRec->SetNonBendingCoor(xRec);
      hitForRec->SetBendingCoor(yRec);
      hitForRec->SetZ(zRec);
      iChamber = AliMUONConstants::ChamberNumber(zRec);
      hitForRec->SetChamberNumber(iChamber);
      hitForRec->SetBendingReso2(0.0); 
      hitForRec->SetNonBendingReso2(0.0); 
      trackParam->SetNonBendingCoor(xRec);
      trackParam->SetBendingCoor(yRec);
      trackParam->SetZ(zRec);
      trackParam->SetNonBendingSlope(nonBendingSlope);
      trackParam->SetBendingSlope(bendingSlope);
      if (TMath::Abs(bendingMomentum) > 0)
	trackParam->SetInverseBendingMomentum(1./bendingMomentum);

      trackNew->AddHitForRecAtHit(hitForRec);
      trackNew->AddTrackParamAtHit(trackParam);
      
      iHit1++;
    } // end iHit1

    trackNew->SetTrackID(track->GetTrackID());
    trackNew->SetTrackParamAtVertex(trackParamAtVertex);
    {new ((*newMuonTrackRef)[newMuonTrackRef->GetEntriesFast()]) AliMUONTrack(*trackNew);}    
    trackNew->ResetHitForRecAtHit();
    trackNew->ResetTrackParamAtHit();
    
  } // end trackRef

  fMuonTrackRef->Clear();
  nTrackRef = newMuonTrackRef->GetEntriesFast();
  for (Int_t index = 0; index < nTrackRef; index++) {
    track = (AliMUONTrack*)newMuonTrackRef->At(index);
    AddMuonTrackReference(track);
  }
  

  delete trackNew;
  delete hitForRec;
  delete trackParam;
  newMuonTrackRef->Delete();
  delete newMuonTrackRef;
  
}

//_____________________________________________________________________________
void AliMUONRecoCheck::ReconstructibleTracks()
{
  // calculate the number of reconstructible tracks
  
  AliMUONTrack* track;
  TClonesArray* hitForRecAtHit = NULL;
  AliMUONHitForRec* hitForRec;
  Float_t zRec;
  Int_t nTrackRef, nTrackHits;
  Int_t isChamberInTrack[10];
  Int_t iChamber = 0;
  Bool_t isTrackOK = kTRUE;

  fReconstructibleTracks = 0;

  nTrackRef = fMuonTrackRef->GetEntriesFast();
  for (Int_t index = 0; index < nTrackRef; index++) {
    track = (AliMUONTrack*)fMuonTrackRef->At(index);
    hitForRecAtHit = track->GetHitForRecAtHit();
    nTrackHits = hitForRecAtHit->GetEntriesFast();
    for (Int_t ch = 0; ch < 10; ch++) isChamberInTrack[ch] = 0;
 
    for ( Int_t iHit = 0; iHit < nTrackHits; iHit++) {
      hitForRec = (AliMUONHitForRec*) hitForRecAtHit->At(iHit); 
      zRec  = hitForRec->GetZ();
      iChamber = hitForRec->GetChamberNumber();
      if (iChamber < 0 || iChamber > 10) continue;
      isChamberInTrack[iChamber] = 1;
      
    }
    // track is reconstructible if the particle is crossing every tracking chambers
    isTrackOK = kTRUE;
    for (Int_t ch = 0; ch < 10; ch++) {
      if (!isChamberInTrack[ch]) isTrackOK = kFALSE;
    }    if (isTrackOK) fReconstructibleTracks++;
    if (!isTrackOK) fMuonTrackRef->Remove(track); // remove non reconstructible tracks
  }
  fMuonTrackRef->Compress();
}
Commit	Line	Data
b8dc484b	1	/**************************************************************************
	2	* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
	3	* *
	4	* Author: The ALICE Off-line Project. *
	5	* Contributors are mentioned in the code where appropriate. *
	6	* *
	7	* Permission to use, copy, modify and distribute this software and its *
	8	* documentation strictly for non-commercial purposes is hereby granted *
	9	* without fee, provided that the above copyright notice appears in all *
	10	* copies and that both the copyright notice and this permission notice *
	11	* appear in the supporting documentation. The authors make no claims *
	12	* about the suitability of this software for any purpose. It is *
	13	* provided "as is" without express or implied warranty. *
	14	**************************************************************************/
	15
	16	//////////////////////////////////////////////////////////////////////////////////////
	17	//
	18	// Utility class to check the muon reconstruction. Reconstructed tracks are compared
	19	// to reference tracks. The reference tracks are built from AliTrackReference for the
	20	// hit in chamber (0..9) and from kinematics for the vertex parameters.
	21	//
	22	//////////////////////////////////////////////////////////////////////////////////////
	23
	24
	25	#include <TParticle.h>
	26
	27	#include "AliRun.h" // for gAlice
	28	#include "AliLog.h"
	29	#include "AliLoader.h"
	30	#include "AliRunLoader.h"
	31	#include "AliTrackReference.h"
	32	#include "AliHeader.h"
	33	#include "AliMC.h"
	34	#include "AliStack.h"
	35	#include "AliMUON.h"
	36	#include "AliMUONRecoCheck.h"
	37	#include "AliMUONTrack.h"
	38	#include "AliMUONData.h"
b8dc484b	39	#include "AliMUONConstants.h"
	40
	41	ClassImp(AliMUONRecoCheck)
	42
	43	//_____________________________________________________________________________
	44	AliMUONRecoCheck::AliMUONRecoCheck(Char_t *chLoader)
	45	{
	46	// Constructor
	47	fMuonTrackRef = new TClonesArray("AliMUONTrack", 10);
	48
	49	// open the run loader
	50	fRunLoader = AliRunLoader::Open(chLoader);
	51	if (!fRunLoader) {
	52	AliError(Form("no run loader found in file %s","galice.root" ));
	53	return;
	54	}
	55	// initialize loader's
	56	AliLoader *loader = fRunLoader->GetLoader("MUONLoader");
	57
	58	// initialize container
	59	fMUONData = new AliMUONData(loader,"MUON","MUON");
	60
	61	// Loading AliRun master
	62	if (fRunLoader->GetAliRun() == 0x0) fRunLoader->LoadgAlice();
	63
	64	fRunLoader->LoadKinematics("READ");
	65	fRunLoader->LoadTrackRefs("READ");
	66	loader->LoadTracks("READ");
	67
	68	fReconstructibleTracks = 0;
	69	fRecoTracks = 0;
	70	}
	71
f29ba3e1	72	//____________________________________________________________________
	73	AliMUONRecoCheck::AliMUONRecoCheck(const AliMUONRecoCheck& rhs)
	74	: TObject(rhs)
	75	{
	76	// Protected copy constructor
	77
	78	AliFatal("Not implemented.");
	79	}
	80
b8dc484b	81	//_____________________________________________________________________________
	82	AliMUONRecoCheck::~AliMUONRecoCheck()
	83	{
	84	fRunLoader->UnloadKinematics();
	85	fRunLoader->UnloadTrackRefs();
	86	fRunLoader->UnloadTracks();
29fc2c86	87	fMuonTrackRef->Delete();
b8dc484b	88	delete fMuonTrackRef;
	89	delete fMUONData;
	90	}
	91
f29ba3e1	92	//________________________________________________________________________
	93	AliMUONRecoCheck& AliMUONRecoCheck::operator = (const AliMUONRecoCheck& rhs)
	94	{
	95	// Protected assignement operator
	96
	97	if (this == &rhs) return *this;
	98
	99	AliFatal("Not implemented.");
	100
	101	return *this;
	102	}
	103
b8dc484b	104	//_____________________________________________________________________________
	105	void AliMUONRecoCheck::MakeTrackRef()
	106	{
	107	// Make reconstructible tracks
	108
	109	AliTrackReference *trackReference;
	110	AliMUONTrack *muonTrack;
	111	AliMUONTrackParam *trackParam;
	112	AliMUONHitForRec *hitForRec;
	113	Float_t x, y, z, pX, pY, pZ, pYZ;
	114	Int_t track, trackSave;
	115	TParticle *particle;
	116	Float_t bendingSlope = 0;
	117	Float_t nonBendingSlope = 0;
	118	Float_t inverseBendingMomentum = 0;
	119
	120	TTree* treeTR = fRunLoader->TreeTR();
	121	if (treeTR == NULL) return;
	122
	123	TBranch* branch = treeTR->GetBranch("MUON");
	124	if (branch == NULL) return;
	125
de876dd1	126	TClonesArray* trackRefs = 0;
b8dc484b	127	branch->SetAddress(&trackRefs);
de876dd1	128	branch->SetAutoDelete(kTRUE);
b8dc484b	129
de876dd1	130	Int_t nTrackRef = (Int_t)branch->GetEntries();
b8dc484b	131
	132	track = trackSave = -999;
	133	Bool_t isNewTrack;
	134	Int_t iHitMin, iChamber;
	135
	136	trackParam = new AliMUONTrackParam();
	137	hitForRec = new AliMUONHitForRec();
	138	muonTrack = new AliMUONTrack();
	139
	140	for (Int_t iTrackRef = 0; iTrackRef < nTrackRef; iTrackRef++) {
de876dd1	141	branch->GetEntry(iTrackRef);
b8dc484b	142
	143	iHitMin = 0;
	144	isNewTrack = kTRUE;
dba3c809	145
29fc2c86	146	if (!trackRefs->GetEntries()) continue;
b8dc484b	147
29fc2c86	148	while (isNewTrack) {
29fc2c86	149
b8dc484b	150	for (Int_t iHit = iHitMin; iHit < trackRefs->GetEntries(); iHit++) {
	151
	152	trackReference = (AliTrackReference*)trackRefs->At(iHit);
	153	x = trackReference->X();
	154	y = trackReference->Y();
	155	z = trackReference->Z();
	156	pX = trackReference->Px();
	157	pY = trackReference->Py();
	158	pZ = trackReference->Pz();
	159
	160	track = trackReference->GetTrack();
	161
	162	if (track != trackSave && iHit != 0) {
	163	iHitMin = iHit;
	164	trackSave = track;
	165	break;
	166	}
	167
	168	// track parameters at hit
	169	trackParam->SetBendingCoor(y);
	170	trackParam->SetNonBendingCoor(x);
	171	trackParam->SetZ(z);
	172
	173	if (TMath::Abs(pZ) > 0) {
	174	bendingSlope = pY/pZ;
	175	nonBendingSlope = pX/pZ;
	176	}
	177	pYZ = TMath::Sqrt(pYpY+pZpZ);
	178	if (pYZ >0) inverseBendingMomentum = 1/pYZ;
	179
	180	trackParam->SetBendingSlope(bendingSlope);
	181	trackParam->SetNonBendingSlope(nonBendingSlope);
	182	trackParam->SetInverseBendingMomentum(inverseBendingMomentum);
	183
	184	hitForRec->SetBendingCoor(y);
	185	hitForRec->SetNonBendingCoor(x);
	186	hitForRec->SetZ(z);
	187	hitForRec->SetBendingReso2(0.0);
	188	hitForRec->SetNonBendingReso2(0.0);
29fc2c86	189	iChamber = AliMUONConstants::ChamberNumber(z);
b8dc484b	190	hitForRec->SetChamberNumber(iChamber);
	191
	192	muonTrack->AddTrackParamAtHit(trackParam);
	193	muonTrack->AddHitForRecAtHit(hitForRec);
	194	muonTrack->SetTrackID(track);
	195
	196	trackSave = track;
	197	if (iHit == trackRefs->GetEntries()-1) isNewTrack = kFALSE;
	198	}
	199
	200	// track parameters at vertex
	201	particle = fRunLoader->GetHeader()->Stack()->Particle(muonTrack->GetTrackID());
	202	if (particle) {
	203	x = particle->Vx();
	204	y = particle->Vy();
	205	z = particle->Vz();
	206	pX = particle->Px();
	207	pY = particle->Py();
	208	pZ = particle->Pz();
	209
	210	trackParam->SetBendingCoor(y);
	211	trackParam->SetNonBendingCoor(x);
	212	trackParam->SetZ(z);
	213	if (TMath::Abs(pZ) > 0) {
	214	bendingSlope = pY/pZ;
	215	nonBendingSlope = pX/pZ;
	216	}
	217	pYZ = TMath::Sqrt(pYpY+pZpZ);
	218	if (pYZ >0) inverseBendingMomentum = 1/pYZ;
	219	trackParam->SetBendingSlope(bendingSlope);
	220	trackParam->SetNonBendingSlope(nonBendingSlope);
	221	trackParam->SetInverseBendingMomentum(inverseBendingMomentum);
	222
	223	muonTrack->SetTrackParamAtVertex(trackParam);
	224	}
	225
	226	AddMuonTrackReference(muonTrack);
	227	muonTrack->ResetTrackParamAtHit();
	228	muonTrack->ResetHitForRecAtHit();
	229
	230	} // end while isNewTrack
	231
	232	}
	233
	234	CleanMuonTrackRef();
	235
	236	ReconstructibleTracks();
	237
	238	delete muonTrack;
	239	delete trackParam;
	240	delete hitForRec;
b8dc484b	241
	242	}
	243
	244	//____________________________________________________________________________
	245	TClonesArray* AliMUONRecoCheck::GetTrackReco()
	246	{
	247	// Return TClonesArray of reconstructed tracks
	248
29fc2c86	249	GetMUONData()->ResetRecTracks();
b8dc484b	250	GetMUONData()->SetTreeAddress("RT");
	251	fTrackReco = GetMUONData()->RecTracks();
	252	GetMUONData()->GetRecTracks();
	253	fRecoTracks = fTrackReco->GetEntriesFast();
	254	return fTrackReco;
	255	}
	256	//_____________________________________________________________________________
	257	void AliMUONRecoCheck::PrintEvent() const
	258	{
	259	// debug facility
	260
	261	AliMUONTrack *track;
	262	AliMUONHitForRec *hitForRec;
	263	TClonesArray * hitForRecAtHit = 0;
	264	Float_t xRec,yRec,zRec;
	265
	266	Int_t nTrackRef = fMuonTrackRef->GetEntriesFast();
	267
	268	printf(" ******************************* \n");
	269	printf(" nb of tracks %d \n",nTrackRef);
	270
	271	for (Int_t index = 0; index < nTrackRef; index++) {
	272	track = (AliMUONTrack*)fMuonTrackRef->At(index);
	273	hitForRecAtHit = track->GetHitForRecAtHit();
	274	Int_t nTrackHits = hitForRecAtHit->GetEntriesFast();
	275	printf(" track number %d \n",index);
	276	for (Int_t iHit = 0; iHit < nTrackHits; iHit++){
	277	hitForRec = (AliMUONHitForRec*) hitForRecAtHit->At(iHit);
	278	xRec = hitForRec->GetNonBendingCoor();
	279	yRec = hitForRec->GetBendingCoor();
	280	zRec = hitForRec->GetZ();
	281	printf(" x,y,z: %f , %f , %f \n",xRec,yRec,zRec);
	282	}
	283	}
	284	}
	285
	286	//_____________________________________________________________________________
	287	void AliMUONRecoCheck::ResetTracks() const
	288	{
	289	if (fMuonTrackRef) fMuonTrackRef->Clear();
	290	}
	291	//_____________________________________________________________________________
	292	void AliMUONRecoCheck::CleanMuonTrackRef()
	293	{
	294	// Re-calculate hits parameters because two AliTrackReferences are recorded for
	295	// each chamber (one when particle is entering + one when particle is leaving
	296	// the sensitive volume)
	297
	298	Float_t maxGasGap = 1.; // cm
	299	AliMUONTrack track, trackNew;
	300	AliMUONHitForRec hitForRec, hitForRec1, *hitForRec2;
	301	AliMUONTrackParam trackParam, trackParam1, trackParam2, trackParamAtVertex;
	302	TClonesArray * hitForRecAtHit = 0;
	303	TClonesArray * trackParamAtHit = 0;
	304	Float_t xRec,yRec,zRec;
	305	Float_t xRec1,yRec1,zRec1;
	306	Float_t xRec2,yRec2,zRec2;
	307	Float_t bendingSlope,nonBendingSlope,bendingMomentum;
	308	Float_t bendingSlope1,nonBendingSlope1,bendingMomentum1;
	309	Float_t bendingSlope2,nonBendingSlope2,bendingMomentum2;
	310	TClonesArray *newMuonTrackRef = new TClonesArray("AliMUONTrack", 10);
	311	Int_t iHit1;
	312	Int_t iChamber = 0;
	313	Int_t nRec = 0;
314	Int_t nTrackHits = 0;
315
316	hitForRec = new AliMUONHitForRec();
317	trackParam = new AliMUONTrackParam();
318	trackNew = new AliMUONTrack();
319
320	Int_t nTrackRef = fMuonTrackRef->GetEntriesFast();
321
322	for (Int_t index = 0; index < nTrackRef; index++) {
323	track = (AliMUONTrack*)fMuonTrackRef->At(index);
324	hitForRecAtHit = track->GetHitForRecAtHit();
325	trackParamAtHit = track->GetTrackParamAtHit();
326	trackParamAtVertex = track->GetTrackParamAtVertex();
327	nTrackHits = hitForRecAtHit->GetEntriesFast();
328	iHit1 = 0;
329	while (iHit1 < nTrackHits) {
330	hitForRec1 = (AliMUONHitForRec*) hitForRecAtHit->At(iHit1);
331	trackParam1 = (AliMUONTrackParam*) trackParamAtHit->At(iHit1);
332	xRec1 = hitForRec1->GetNonBendingCoor();
333	yRec1 = hitForRec1->GetBendingCoor();
334	zRec1 = hitForRec1->GetZ();
335	xRec = xRec1;
336	yRec = yRec1;
337	zRec = zRec1;
338	bendingSlope1 = trackParam1->GetBendingSlope();
339	nonBendingSlope1 = trackParam1->GetNonBendingSlope();
de876dd1	340	bendingMomentum1 = 0;
	341	if (TMath::Abs(trackParam1->GetInverseBendingMomentum()) > 0)
	342	bendingMomentum1 = 1./trackParam1->GetInverseBendingMomentum();
b8dc484b	343	bendingSlope = bendingSlope1;
	344	nonBendingSlope = nonBendingSlope1;
	345	bendingMomentum = bendingMomentum1;
	346	nRec = 1;
	347	for (Int_t iHit2 = iHit1+1; iHit2 < nTrackHits; iHit2++) {
	348	hitForRec2 = (AliMUONHitForRec*) hitForRecAtHit->At(iHit2);
	349	trackParam2 = (AliMUONTrackParam*) trackParamAtHit->At(iHit2);
	350	xRec2 = hitForRec2->GetNonBendingCoor();
	351	yRec2 = hitForRec2->GetBendingCoor();
	352	zRec2 = hitForRec2->GetZ();
	353	bendingSlope2 = trackParam2->GetBendingSlope();
	354	nonBendingSlope2 = trackParam2->GetNonBendingSlope();
de876dd1	355	bendingMomentum2 = 0;
	356	if (TMath::Abs(trackParam2->GetInverseBendingMomentum()) > 0)
	357	bendingMomentum2 = 1./trackParam2->GetInverseBendingMomentum();
b8dc484b	358
	359	if ( TMath::Abs(zRec2-zRec1) < maxGasGap ) {
	360	nRec++;
	361	xRec += xRec2;
	362	yRec += yRec2;
	363	zRec += zRec2;
	364	bendingSlope += bendingSlope2;
	365	nonBendingSlope += nonBendingSlope2;
	366	bendingMomentum += bendingMomentum2;
	367	iHit1 = iHit2;
	368	}
	369
	370	} // end iHit2
	371	xRec /= (Float_t)nRec;
	372	yRec /= (Float_t)nRec;
	373	zRec /= (Float_t)nRec;
	374	bendingSlope /= (Float_t)nRec;
	375	nonBendingSlope /= (Float_t)nRec;
	376	bendingMomentum /= (Float_t)nRec;
	377
	378	hitForRec->SetNonBendingCoor(xRec);
	379	hitForRec->SetBendingCoor(yRec);
	380	hitForRec->SetZ(zRec);
29fc2c86	381	iChamber = AliMUONConstants::ChamberNumber(zRec);
b8dc484b	382	hitForRec->SetChamberNumber(iChamber);
	383	hitForRec->SetBendingReso2(0.0);
	384	hitForRec->SetNonBendingReso2(0.0);
	385	trackParam->SetNonBendingCoor(xRec);
	386	trackParam->SetBendingCoor(yRec);
	387	trackParam->SetZ(zRec);
	388	trackParam->SetNonBendingSlope(nonBendingSlope);
	389	trackParam->SetBendingSlope(bendingSlope);
de876dd1	390	if (TMath::Abs(bendingMomentum) > 0)
de876dd1	391	trackParam->SetInverseBendingMomentum(1./bendingMomentum);
b8dc484b	392
	393	trackNew->AddHitForRecAtHit(hitForRec);
	394	trackNew->AddTrackParamAtHit(trackParam);
	395
	396	iHit1++;
	397	} // end iHit1
	398
	399	trackNew->SetTrackID(track->GetTrackID());
	400	trackNew->SetTrackParamAtVertex(trackParamAtVertex);
	401	{new ((newMuonTrackRef)[newMuonTrackRef->GetEntriesFast()]) AliMUONTrack(trackNew);}
	402	trackNew->ResetHitForRecAtHit();
	403	trackNew->ResetTrackParamAtHit();
	404
	405	} // end trackRef
	406
	407	fMuonTrackRef->Clear();
	408	nTrackRef = newMuonTrackRef->GetEntriesFast();
	409	for (Int_t index = 0; index < nTrackRef; index++) {
	410	track = (AliMUONTrack*)newMuonTrackRef->At(index);
	411	AddMuonTrackReference(track);
	412	}
	413
	414
	415	delete trackNew;
	416	delete hitForRec;
	417	delete trackParam;
29fc2c86	418	newMuonTrackRef->Delete();
b8dc484b	419	delete newMuonTrackRef;
	420
	421	}
	422
	423	//_____________________________________________________________________________
	424	void AliMUONRecoCheck::ReconstructibleTracks()
	425	{
	426	// calculate the number of reconstructible tracks
	427
	428	AliMUONTrack* track;
	429	TClonesArray* hitForRecAtHit = NULL;
	430	AliMUONHitForRec* hitForRec;
	431	Float_t zRec;
	432	Int_t nTrackRef, nTrackHits;
	433	Int_t isChamberInTrack[10];
	434	Int_t iChamber = 0;
	435	Bool_t isTrackOK = kTRUE;
	436
	437	fReconstructibleTracks = 0;
	438
	439	nTrackRef = fMuonTrackRef->GetEntriesFast();
	440	for (Int_t index = 0; index < nTrackRef; index++) {
	441	track = (AliMUONTrack*)fMuonTrackRef->At(index);
	442	hitForRecAtHit = track->GetHitForRecAtHit();
	443	nTrackHits = hitForRecAtHit->GetEntriesFast();
	444	for (Int_t ch = 0; ch < 10; ch++) isChamberInTrack[ch] = 0;
	445
	446	for ( Int_t iHit = 0; iHit < nTrackHits; iHit++) {
	447	hitForRec = (AliMUONHitForRec*) hitForRecAtHit->At(iHit);
	448	zRec = hitForRec->GetZ();
	449	iChamber = hitForRec->GetChamberNumber();
	450	if (iChamber < 0 \|\| iChamber > 10) continue;
	451	isChamberInTrack[iChamber] = 1;
	452
	453	}
	454	// track is reconstructible if the particle is crossing every tracking chambers
	455	isTrackOK = kTRUE;
	456	for (Int_t ch = 0; ch < 10; ch++) {
	457	if (!isChamberInTrack[ch]) isTrackOK = kFALSE;
29fc2c86	458	} if (isTrackOK) fReconstructibleTracks++;
b8dc484b	459	if (!isTrackOK) fMuonTrackRef->Remove(track); // remove non reconstructible tracks
	460	}
	461	fMuonTrackRef->Compress();
	462	}
	463
	464