[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.                  *
 **************************************************************************/

/* $Id$ */

/// \class AliMUONRecoCheck
/// \brief Utility class to check 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 "AliMUON.h"
#include "AliMUONRecoCheck.h"
#include "AliMUONTrack.h"
#include "AliMUONData.h"
#include "AliMUONConstants.h"

#include "AliRun.h" // for gAlice
#include "AliLoader.h" 
#include "AliRunLoader.h" 
#include "AliHeader.h"
#include "AliStack.h"
#include "AliTrackReference.h"
#include "AliLog.h" 

#include <TParticle.h>

/// \cond CLASSIMP
ClassImp(AliMUONRecoCheck)
/// \endcond

//_____________________________________________________________________________
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()
{
/// Destructor

  fRunLoader->UnloadKinematics();
  fRunLoader->UnloadTrackRefs();
  fRunLoader->UnloadTracks();
  fMuonTrackRef->Delete();
  delete fMuonTrackRef;
  delete fMUONData;
}

//_____________________________________________________________________________
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, detElemId;

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

  Int_t max = fRunLoader->GetHeader()->Stack()->GetNtrack();
  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 >= max){
	  AliWarningStream()
	    << "Track ID " << track 
	    << " larger than max number of particles " << max << endl;
	  isNewTrack = kFALSE;
	  break;
	}
	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);
	detElemId = hitForRec->GetDetElemId();
	if (detElemId) iChamber = detElemId / 100 - 1; 
	else 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
{
/// Reset tracks

  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, detElemId = 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);
      detElemId = hitForRec->GetDetElemId();
      if (detElemId) iChamber = detElemId / 100 - 1;
      else 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 depositing a hit
    // in the following chamber combinations:

    isTrackOK = kTRUE;
    if (!isChamberInTrack[0] && !isChamberInTrack[1]) isTrackOK = kFALSE;
    if (!isChamberInTrack[2] && !isChamberInTrack[3]) isTrackOK = kFALSE;
    if (!isChamberInTrack[4] && !isChamberInTrack[5]) isTrackOK = kFALSE;
    Int_t nHitsInLastStations=0;
    for (Int_t ch = 6; ch < AliMUONConstants::NTrackingCh(); ch++)
      if (isChamberInTrack[ch]) nHitsInLastStations++; 
    if(nHitsInLastStations < 3) 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
d19b6003	16	/* $Id$ */
d19b6003	17
5398f946	18	/// \class AliMUONRecoCheck
	19	/// \brief Utility class to check reconstruction
	20	/// Reconstructed tracks are compared to reference tracks.
	21	/// The reference tracks are built from AliTrackReference for the
	22	/// hit in chamber (0..9) and from kinematics for the vertex parameters.
b8dc484b	23
cc056de1	24	#include "AliMUON.h"
	25	#include "AliMUONRecoCheck.h"
	26	#include "AliMUONTrack.h"
	27	#include "AliMUONData.h"
	28	#include "AliMUONConstants.h"
b8dc484b	29
b8dc484b	30	#include "AliRun.h" // for gAlice
b8dc484b	31	#include "AliLoader.h"
b8dc484b	32	#include "AliRunLoader.h"
b8dc484b	33	#include "AliHeader.h"
b8dc484b	34	#include "AliStack.h"
cc056de1	35	#include "AliTrackReference.h"
	36	#include "AliLog.h"
	37
	38	#include <TParticle.h>
b8dc484b	39
5398f946	40	/// \cond CLASSIMP
b8dc484b	41	ClassImp(AliMUONRecoCheck)
5398f946	42	/// \endcond
b8dc484b	43
	44	//_____________________________________________________________________________
	45	AliMUONRecoCheck::AliMUONRecoCheck(Char_t *chLoader)
	46	{
d19b6003	47	/// Constructor
5398f946	48
b8dc484b	49	fMuonTrackRef = new TClonesArray("AliMUONTrack", 10);
	50
	51	// open the run loader
	52	fRunLoader = AliRunLoader::Open(chLoader);
	53	if (!fRunLoader) {
	54	AliError(Form("no run loader found in file %s","galice.root" ));
	55	return;
	56	}
	57	// initialize loader's
	58	AliLoader *loader = fRunLoader->GetLoader("MUONLoader");
	59
	60	// initialize container
	61	fMUONData = new AliMUONData(loader,"MUON","MUON");
	62
	63	// Loading AliRun master
	64	if (fRunLoader->GetAliRun() == 0x0) fRunLoader->LoadgAlice();
	65
	66	fRunLoader->LoadKinematics("READ");
	67	fRunLoader->LoadTrackRefs("READ");
	68	loader->LoadTracks("READ");
	69
	70	fReconstructibleTracks = 0;
	71	fRecoTracks = 0;
	72	}
	73
	74	//_____________________________________________________________________________
	75	AliMUONRecoCheck::~AliMUONRecoCheck()
	76	{
d19b6003	77	/// Destructor
d19b6003	78
b8dc484b	79	fRunLoader->UnloadKinematics();
	80	fRunLoader->UnloadTrackRefs();
	81	fRunLoader->UnloadTracks();
29fc2c86	82	fMuonTrackRef->Delete();
b8dc484b	83	delete fMuonTrackRef;
	84	delete fMUONData;
	85	}
	86
	87	//_____________________________________________________________________________
	88	void AliMUONRecoCheck::MakeTrackRef()
	89	{
d19b6003	90	/// Make reconstructible tracks
b8dc484b	91
	92	AliTrackReference *trackReference;
	93	AliMUONTrack *muonTrack;
	94	AliMUONTrackParam *trackParam;
	95	AliMUONHitForRec *hitForRec;
	96	Float_t x, y, z, pX, pY, pZ, pYZ;
	97	Int_t track, trackSave;
	98	TParticle *particle;
	99	Float_t bendingSlope = 0;
	100	Float_t nonBendingSlope = 0;
	101	Float_t inverseBendingMomentum = 0;
	102
	103	TTree* treeTR = fRunLoader->TreeTR();
	104	if (treeTR == NULL) return;
	105
	106	TBranch* branch = treeTR->GetBranch("MUON");
	107	if (branch == NULL) return;
	108
de876dd1	109	TClonesArray* trackRefs = 0;
b8dc484b	110	branch->SetAddress(&trackRefs);
de876dd1	111	branch->SetAutoDelete(kTRUE);
b8dc484b	112
de876dd1	113	Int_t nTrackRef = (Int_t)branch->GetEntries();
b8dc484b	114
	115	track = trackSave = -999;
	116	Bool_t isNewTrack;
30d3ea8a	117	Int_t iHitMin, iChamber, detElemId;
b8dc484b	118
	119	trackParam = new AliMUONTrackParam();
	120	hitForRec = new AliMUONHitForRec();
	121	muonTrack = new AliMUONTrack();
	122
cc056de1	123	Int_t max = fRunLoader->GetHeader()->Stack()->GetNtrack();
b8dc484b	124	for (Int_t iTrackRef = 0; iTrackRef < nTrackRef; iTrackRef++) {
cc056de1	125
de876dd1	126	branch->GetEntry(iTrackRef);
b8dc484b	127
	128	iHitMin = 0;
	129	isNewTrack = kTRUE;
dba3c809	130
29fc2c86	131	if (!trackRefs->GetEntries()) continue;
b8dc484b	132
29fc2c86	133	while (isNewTrack) {
b8dc484b	134	for (Int_t iHit = iHitMin; iHit < trackRefs->GetEntries(); iHit++) {
	135
	136	trackReference = (AliTrackReference*)trackRefs->At(iHit);
	137	x = trackReference->X();
	138	y = trackReference->Y();
	139	z = trackReference->Z();
	140	pX = trackReference->Px();
	141	pY = trackReference->Py();
	142	pZ = trackReference->Pz();
	143
	144	track = trackReference->GetTrack();
	145
cc056de1	146	if(track >= max){
	147	AliWarningStream()
	148	<< "Track ID " << track
	149	<< " larger than max number of particles " << max << endl;
	150	isNewTrack = kFALSE;
	151	break;
	152	}
b8dc484b	153	if (track != trackSave && iHit != 0) {
	154	iHitMin = iHit;
	155	trackSave = track;
	156	break;
	157	}
	158
	159	// track parameters at hit
	160	trackParam->SetBendingCoor(y);
	161	trackParam->SetNonBendingCoor(x);
	162	trackParam->SetZ(z);
cc056de1	163
b8dc484b	164	if (TMath::Abs(pZ) > 0) {
	165	bendingSlope = pY/pZ;
	166	nonBendingSlope = pX/pZ;
	167	}
	168	pYZ = TMath::Sqrt(pYpY+pZpZ);
	169	if (pYZ >0) inverseBendingMomentum = 1/pYZ;
	170
	171	trackParam->SetBendingSlope(bendingSlope);
	172	trackParam->SetNonBendingSlope(nonBendingSlope);
	173	trackParam->SetInverseBendingMomentum(inverseBendingMomentum);
	174
	175	hitForRec->SetBendingCoor(y);
	176	hitForRec->SetNonBendingCoor(x);
	177	hitForRec->SetZ(z);
	178	hitForRec->SetBendingReso2(0.0);
30d3ea8a	179	hitForRec->SetNonBendingReso2(0.0);
	180	detElemId = hitForRec->GetDetElemId();
	181	if (detElemId) iChamber = detElemId / 100 - 1;
	182	else iChamber = AliMUONConstants::ChamberNumber(z);
b8dc484b	183	hitForRec->SetChamberNumber(iChamber);
	184
	185	muonTrack->AddTrackParamAtHit(trackParam);
	186	muonTrack->AddHitForRecAtHit(hitForRec);
	187	muonTrack->SetTrackID(track);
cc056de1	188
b8dc484b	189	trackSave = track;
	190	if (iHit == trackRefs->GetEntries()-1) isNewTrack = kFALSE;
	191	}
cc056de1	192
b8dc484b	193	// track parameters at vertex
b8dc484b	194	particle = fRunLoader->GetHeader()->Stack()->Particle(muonTrack->GetTrackID());
cc056de1	195
b8dc484b	196	if (particle) {
cc056de1	197
b8dc484b	198	x = particle->Vx();
	199	y = particle->Vy();
	200	z = particle->Vz();
	201	pX = particle->Px();
	202	pY = particle->Py();
	203	pZ = particle->Pz();
	204
	205	trackParam->SetBendingCoor(y);
	206	trackParam->SetNonBendingCoor(x);
	207	trackParam->SetZ(z);
	208	if (TMath::Abs(pZ) > 0) {
	209	bendingSlope = pY/pZ;
	210	nonBendingSlope = pX/pZ;
	211	}
	212	pYZ = TMath::Sqrt(pYpY+pZpZ);
	213	if (pYZ >0) inverseBendingMomentum = 1/pYZ;
	214	trackParam->SetBendingSlope(bendingSlope);
	215	trackParam->SetNonBendingSlope(nonBendingSlope);
	216	trackParam->SetInverseBendingMomentum(inverseBendingMomentum);
	217
	218	muonTrack->SetTrackParamAtVertex(trackParam);
	219	}
cc056de1	220
b8dc484b	221	AddMuonTrackReference(muonTrack);
	222	muonTrack->ResetTrackParamAtHit();
	223	muonTrack->ResetHitForRecAtHit();
	224
	225	} // end while isNewTrack
b8dc484b	226	}
	227
	228	CleanMuonTrackRef();
	229
	230	ReconstructibleTracks();
	231
	232	delete muonTrack;
	233	delete trackParam;
	234	delete hitForRec;
b8dc484b	235
	236	}
	237
	238	//____________________________________________________________________________
	239	TClonesArray* AliMUONRecoCheck::GetTrackReco()
	240	{
d19b6003	241	/// Return TClonesArray of reconstructed tracks
b8dc484b	242
29fc2c86	243	GetMUONData()->ResetRecTracks();
b8dc484b	244	GetMUONData()->SetTreeAddress("RT");
	245	fTrackReco = GetMUONData()->RecTracks();
	246	GetMUONData()->GetRecTracks();
	247	fRecoTracks = fTrackReco->GetEntriesFast();
	248	return fTrackReco;
	249	}
	250	//_____________________________________________________________________________
	251	void AliMUONRecoCheck::PrintEvent() const
	252	{
d19b6003	253	/// Debug facility
b8dc484b	254
	255	AliMUONTrack *track;
	256	AliMUONHitForRec *hitForRec;
	257	TClonesArray * hitForRecAtHit = 0;
	258	Float_t xRec,yRec,zRec;
	259
	260	Int_t nTrackRef = fMuonTrackRef->GetEntriesFast();
	261
	262	printf(" ******************************* \n");
	263	printf(" nb of tracks %d \n",nTrackRef);
	264
	265	for (Int_t index = 0; index < nTrackRef; index++) {
	266	track = (AliMUONTrack*)fMuonTrackRef->At(index);
	267	hitForRecAtHit = track->GetHitForRecAtHit();
	268	Int_t nTrackHits = hitForRecAtHit->GetEntriesFast();
	269	printf(" track number %d \n",index);
	270	for (Int_t iHit = 0; iHit < nTrackHits; iHit++){
	271	hitForRec = (AliMUONHitForRec*) hitForRecAtHit->At(iHit);
	272	xRec = hitForRec->GetNonBendingCoor();
	273	yRec = hitForRec->GetBendingCoor();
	274	zRec = hitForRec->GetZ();
	275	printf(" x,y,z: %f , %f , %f \n",xRec,yRec,zRec);
	276	}
	277	}
	278	}
	279
	280	//_____________________________________________________________________________
	281	void AliMUONRecoCheck::ResetTracks() const
	282	{
d19b6003	283	/// Reset tracks
d19b6003	284
b8dc484b	285	if (fMuonTrackRef) fMuonTrackRef->Clear();
	286	}
	287	//_____________________________________________________________________________
	288	void AliMUONRecoCheck::CleanMuonTrackRef()
	289	{
d19b6003	290	/// Re-calculate hits parameters because two AliTrackReferences are recorded for
	291	/// each chamber (one when particle is entering + one when particle is leaving
	292	/// the sensitive volume)
b8dc484b	293
	294	Float_t maxGasGap = 1.; // cm
	295	AliMUONTrack track, trackNew;
	296	AliMUONHitForRec hitForRec, hitForRec1, *hitForRec2;
	297	AliMUONTrackParam trackParam, trackParam1, trackParam2, trackParamAtVertex;
	298	TClonesArray * hitForRecAtHit = 0;
	299	TClonesArray * trackParamAtHit = 0;
	300	Float_t xRec,yRec,zRec;
	301	Float_t xRec1,yRec1,zRec1;
	302	Float_t xRec2,yRec2,zRec2;
	303	Float_t bendingSlope,nonBendingSlope,bendingMomentum;
	304	Float_t bendingSlope1,nonBendingSlope1,bendingMomentum1;
	305	Float_t bendingSlope2,nonBendingSlope2,bendingMomentum2;
	306	TClonesArray *newMuonTrackRef = new TClonesArray("AliMUONTrack", 10);
	307	Int_t iHit1;
30d3ea8a	308	Int_t iChamber = 0, detElemId = 0;
b8dc484b	309	Int_t nRec = 0;
	310	Int_t nTrackHits = 0;
	311
	312	hitForRec = new AliMUONHitForRec();
	313	trackParam = new AliMUONTrackParam();
	314	trackNew = new AliMUONTrack();
	315
	316	Int_t nTrackRef = fMuonTrackRef->GetEntriesFast();
b8dc484b	317	for (Int_t index = 0; index < nTrackRef; index++) {
	318	track = (AliMUONTrack*)fMuonTrackRef->At(index);
	319	hitForRecAtHit = track->GetHitForRecAtHit();
	320	trackParamAtHit = track->GetTrackParamAtHit();
	321	trackParamAtVertex = track->GetTrackParamAtVertex();
	322	nTrackHits = hitForRecAtHit->GetEntriesFast();
	323	iHit1 = 0;
	324	while (iHit1 < nTrackHits) {
	325	hitForRec1 = (AliMUONHitForRec*) hitForRecAtHit->At(iHit1);
	326	trackParam1 = (AliMUONTrackParam*) trackParamAtHit->At(iHit1);
	327	xRec1 = hitForRec1->GetNonBendingCoor();
	328	yRec1 = hitForRec1->GetBendingCoor();
	329	zRec1 = hitForRec1->GetZ();
	330	xRec = xRec1;
	331	yRec = yRec1;
	332	zRec = zRec1;
	333	bendingSlope1 = trackParam1->GetBendingSlope();
	334	nonBendingSlope1 = trackParam1->GetNonBendingSlope();
de876dd1	335	bendingMomentum1 = 0;
	336	if (TMath::Abs(trackParam1->GetInverseBendingMomentum()) > 0)
	337	bendingMomentum1 = 1./trackParam1->GetInverseBendingMomentum();
b8dc484b	338	bendingSlope = bendingSlope1;
	339	nonBendingSlope = nonBendingSlope1;
	340	bendingMomentum = bendingMomentum1;
	341	nRec = 1;
	342	for (Int_t iHit2 = iHit1+1; iHit2 < nTrackHits; iHit2++) {
	343	hitForRec2 = (AliMUONHitForRec*) hitForRecAtHit->At(iHit2);
	344	trackParam2 = (AliMUONTrackParam*) trackParamAtHit->At(iHit2);
	345	xRec2 = hitForRec2->GetNonBendingCoor();
	346	yRec2 = hitForRec2->GetBendingCoor();
	347	zRec2 = hitForRec2->GetZ();
	348	bendingSlope2 = trackParam2->GetBendingSlope();
	349	nonBendingSlope2 = trackParam2->GetNonBendingSlope();
de876dd1	350	bendingMomentum2 = 0;
	351	if (TMath::Abs(trackParam2->GetInverseBendingMomentum()) > 0)
	352	bendingMomentum2 = 1./trackParam2->GetInverseBendingMomentum();
b8dc484b	353
b8dc484b	354	if ( TMath::Abs(zRec2-zRec1) < maxGasGap ) {
cc056de1	355
b8dc484b	356	nRec++;
	357	xRec += xRec2;
	358	yRec += yRec2;
	359	zRec += zRec2;
	360	bendingSlope += bendingSlope2;
	361	nonBendingSlope += nonBendingSlope2;
	362	bendingMomentum += bendingMomentum2;
	363	iHit1 = iHit2;
	364	}
	365
	366	} // end iHit2
	367	xRec /= (Float_t)nRec;
	368	yRec /= (Float_t)nRec;
	369	zRec /= (Float_t)nRec;
	370	bendingSlope /= (Float_t)nRec;
	371	nonBendingSlope /= (Float_t)nRec;
	372	bendingMomentum /= (Float_t)nRec;
	373
	374	hitForRec->SetNonBendingCoor(xRec);
	375	hitForRec->SetBendingCoor(yRec);
	376	hitForRec->SetZ(zRec);
30d3ea8a	377	detElemId = hitForRec->GetDetElemId();
	378	if (detElemId) iChamber = detElemId / 100 - 1;
	379	else iChamber = AliMUONConstants::ChamberNumber(zRec);
b8dc484b	380	hitForRec->SetChamberNumber(iChamber);
	381	hitForRec->SetBendingReso2(0.0);
	382	hitForRec->SetNonBendingReso2(0.0);
	383	trackParam->SetNonBendingCoor(xRec);
	384	trackParam->SetBendingCoor(yRec);
	385	trackParam->SetZ(zRec);
	386	trackParam->SetNonBendingSlope(nonBendingSlope);
	387	trackParam->SetBendingSlope(bendingSlope);
de876dd1	388	if (TMath::Abs(bendingMomentum) > 0)
de876dd1	389	trackParam->SetInverseBendingMomentum(1./bendingMomentum);
b8dc484b	390
	391	trackNew->AddHitForRecAtHit(hitForRec);
	392	trackNew->AddTrackParamAtHit(trackParam);
	393
	394	iHit1++;
	395	} // end iHit1
	396
	397	trackNew->SetTrackID(track->GetTrackID());
	398	trackNew->SetTrackParamAtVertex(trackParamAtVertex);
	399	{new ((newMuonTrackRef)[newMuonTrackRef->GetEntriesFast()]) AliMUONTrack(trackNew);}
	400	trackNew->ResetHitForRecAtHit();
	401	trackNew->ResetTrackParamAtHit();
	402
	403	} // end trackRef
	404
	405	fMuonTrackRef->Clear();
	406	nTrackRef = newMuonTrackRef->GetEntriesFast();
	407	for (Int_t index = 0; index < nTrackRef; index++) {
	408	track = (AliMUONTrack*)newMuonTrackRef->At(index);
	409	AddMuonTrackReference(track);
	410	}
	411
	412
	413	delete trackNew;
	414	delete hitForRec;
	415	delete trackParam;
29fc2c86	416	newMuonTrackRef->Delete();
b8dc484b	417	delete newMuonTrackRef;
	418
	419	}
	420
	421	//_____________________________________________________________________________
	422	void AliMUONRecoCheck::ReconstructibleTracks()
	423	{
d19b6003	424	/// Calculate the number of reconstructible tracks
b8dc484b	425
	426	AliMUONTrack* track;
	427	TClonesArray* hitForRecAtHit = NULL;
	428	AliMUONHitForRec* hitForRec;
	429	Float_t zRec;
	430	Int_t nTrackRef, nTrackHits;
	431	Int_t isChamberInTrack[10];
	432	Int_t iChamber = 0;
	433	Bool_t isTrackOK = kTRUE;
	434
	435	fReconstructibleTracks = 0;
	436
	437	nTrackRef = fMuonTrackRef->GetEntriesFast();
	438	for (Int_t index = 0; index < nTrackRef; index++) {
	439	track = (AliMUONTrack*)fMuonTrackRef->At(index);
	440	hitForRecAtHit = track->GetHitForRecAtHit();
	441	nTrackHits = hitForRecAtHit->GetEntriesFast();
	442	for (Int_t ch = 0; ch < 10; ch++) isChamberInTrack[ch] = 0;
	443
	444	for ( Int_t iHit = 0; iHit < nTrackHits; iHit++) {
	445	hitForRec = (AliMUONHitForRec*) hitForRecAtHit->At(iHit);
	446	zRec = hitForRec->GetZ();
	447	iChamber = hitForRec->GetChamberNumber();
	448	if (iChamber < 0 \|\| iChamber > 10) continue;
	449	isChamberInTrack[iChamber] = 1;
cc056de1	450	}
	451	// track is reconstructible if the particle is depositing a hit
	452	// in the following chamber combinations:
	453
b8dc484b	454	isTrackOK = kTRUE;
cc056de1	455	if (!isChamberInTrack[0] && !isChamberInTrack[1]) isTrackOK = kFALSE;
	456	if (!isChamberInTrack[2] && !isChamberInTrack[3]) isTrackOK = kFALSE;
	457	if (!isChamberInTrack[4] && !isChamberInTrack[5]) isTrackOK = kFALSE;
	458	Int_t nHitsInLastStations=0;
	459	for (Int_t ch = 6; ch < AliMUONConstants::NTrackingCh(); ch++)
	460	if (isChamberInTrack[ch]) nHitsInLastStations++;
	461	if(nHitsInLastStations < 3) isTrackOK = kFALSE;
	462
	463	if (isTrackOK) fReconstructibleTracks++;
b8dc484b	464	if (!isTrackOK) fMuonTrackRef->Remove(track); // remove non reconstructible tracks
	465	}
	466	fMuonTrackRef->Compress();
	467	}
	468