[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(AliRunLoader *runloader, AliMUONData *muondata)
  : TObject(),
  fRunLoader(0x0),
  fMUONData(0x0),
  fMuonTrackRef(0x0),
  fTrackReco(0x0),
  fReconstructibleTracks(0),
  fRecoTracks(0)
{
/// Constructor

  fMuonTrackRef = new TClonesArray("AliMUONTrack", 10);

  // run loader
  fRunLoader = runloader;
  if (!fRunLoader) {
    AliError(Form("no run loader found " ));
    return;
  }

  // container
  fMUONData  = muondata;
  if (!fMUONData) {
    AliError(Form("no MUONData found " ));
    return;
  }

}


//_____________________________________________________________________________
AliMUONRecoCheck::~AliMUONRecoCheck()
{
/// Destructor

  fMuonTrackRef->Delete();
  delete fMuonTrackRef;
}

//_____________________________________________________________________________
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,hitForRec);
	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

  fMUONData->ResetRecTracks();
  fMUONData->SetTreeAddress("RT");
  fTrackReco = fMUONData->RecTracks(); 
  fMUONData->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,hitForRec);
      
      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
b8dc484b	44	//_____________________________________________________________________________
45a05f07	45	AliMUONRecoCheck::AliMUONRecoCheck(AliRunLoader runloader, AliMUONData muondata)
54d7ba50	46	: TObject(),
	47	fRunLoader(0x0),
	48	fMUONData(0x0),
	49	fMuonTrackRef(0x0),
	50	fTrackReco(0x0),
	51	fReconstructibleTracks(0),
	52	fRecoTracks(0)
b8dc484b	53	{
d19b6003	54	/// Constructor
5398f946	55
b8dc484b	56	fMuonTrackRef = new TClonesArray("AliMUONTrack", 10);
b8dc484b	57
45a05f07	58	// run loader
45a05f07	59	fRunLoader = runloader;
b8dc484b	60	if (!fRunLoader) {
45a05f07	61	AliError(Form("no run loader found " ));
b8dc484b	62	return;
b8dc484b	63	}
b8dc484b	64
45a05f07	65	// container
	66	fMUONData = muondata;
	67	if (!fMUONData) {
	68	AliError(Form("no MUONData found " ));
	69	return;
	70	}
b8dc484b	71
b8dc484b	72	}
b8dc484b	73
45a05f07	74
b8dc484b	75	//_____________________________________________________________________________
	76	AliMUONRecoCheck::~AliMUONRecoCheck()
	77	{
d19b6003	78	/// Destructor
d19b6003	79
29fc2c86	80	fMuonTrackRef->Delete();
b8dc484b	81	delete fMuonTrackRef;
b8dc484b	82	}
	83
	84	//_____________________________________________________________________________
	85	void AliMUONRecoCheck::MakeTrackRef()
	86	{
d19b6003	87	/// Make reconstructible tracks
b8dc484b	88
	89	AliTrackReference *trackReference;
	90	AliMUONTrack *muonTrack;
	91	AliMUONTrackParam *trackParam;
	92	AliMUONHitForRec *hitForRec;
	93	Float_t x, y, z, pX, pY, pZ, pYZ;
	94	Int_t track, trackSave;
	95	TParticle *particle;
	96	Float_t bendingSlope = 0;
	97	Float_t nonBendingSlope = 0;
	98	Float_t inverseBendingMomentum = 0;
	99
	100	TTree* treeTR = fRunLoader->TreeTR();
	101	if (treeTR == NULL) return;
	102
	103	TBranch* branch = treeTR->GetBranch("MUON");
	104	if (branch == NULL) return;
	105
de876dd1	106	TClonesArray* trackRefs = 0;
b8dc484b	107	branch->SetAddress(&trackRefs);
de876dd1	108	branch->SetAutoDelete(kTRUE);
b8dc484b	109
de876dd1	110	Int_t nTrackRef = (Int_t)branch->GetEntries();
b8dc484b	111
	112	track = trackSave = -999;
	113	Bool_t isNewTrack;
30d3ea8a	114	Int_t iHitMin, iChamber, detElemId;
b8dc484b	115
	116	trackParam = new AliMUONTrackParam();
	117	hitForRec = new AliMUONHitForRec();
	118	muonTrack = new AliMUONTrack();
	119
cc056de1	120	Int_t max = fRunLoader->GetHeader()->Stack()->GetNtrack();
b8dc484b	121	for (Int_t iTrackRef = 0; iTrackRef < nTrackRef; iTrackRef++) {
cc056de1	122
de876dd1	123	branch->GetEntry(iTrackRef);
b8dc484b	124
	125	iHitMin = 0;
	126	isNewTrack = kTRUE;
dba3c809	127
29fc2c86	128	if (!trackRefs->GetEntries()) continue;
b8dc484b	129
29fc2c86	130	while (isNewTrack) {
b8dc484b	131	for (Int_t iHit = iHitMin; iHit < trackRefs->GetEntries(); iHit++) {
	132
	133	trackReference = (AliTrackReference*)trackRefs->At(iHit);
	134	x = trackReference->X();
	135	y = trackReference->Y();
	136	z = trackReference->Z();
	137	pX = trackReference->Px();
	138	pY = trackReference->Py();
	139	pZ = trackReference->Pz();
	140
	141	track = trackReference->GetTrack();
	142
cc056de1	143	if(track >= max){
	144	AliWarningStream()
	145	<< "Track ID " << track
	146	<< " larger than max number of particles " << max << endl;
	147	isNewTrack = kFALSE;
	148	break;
	149	}
b8dc484b	150	if (track != trackSave && iHit != 0) {
	151	iHitMin = iHit;
	152	trackSave = track;
	153	break;
	154	}
	155
	156	// track parameters at hit
	157	trackParam->SetBendingCoor(y);
	158	trackParam->SetNonBendingCoor(x);
	159	trackParam->SetZ(z);
cc056de1	160
b8dc484b	161	if (TMath::Abs(pZ) > 0) {
	162	bendingSlope = pY/pZ;
	163	nonBendingSlope = pX/pZ;
	164	}
	165	pYZ = TMath::Sqrt(pYpY+pZpZ);
	166	if (pYZ >0) inverseBendingMomentum = 1/pYZ;
	167
	168	trackParam->SetBendingSlope(bendingSlope);
	169	trackParam->SetNonBendingSlope(nonBendingSlope);
	170	trackParam->SetInverseBendingMomentum(inverseBendingMomentum);
	171
	172	hitForRec->SetBendingCoor(y);
	173	hitForRec->SetNonBendingCoor(x);
	174	hitForRec->SetZ(z);
	175	hitForRec->SetBendingReso2(0.0);
30d3ea8a	176	hitForRec->SetNonBendingReso2(0.0);
	177	detElemId = hitForRec->GetDetElemId();
	178	if (detElemId) iChamber = detElemId / 100 - 1;
	179	else iChamber = AliMUONConstants::ChamberNumber(z);
b8dc484b	180	hitForRec->SetChamberNumber(iChamber);
b8dc484b	181
de2cd600	182	muonTrack->AddTrackParamAtHit(trackParam,hitForRec);
b8dc484b	183	muonTrack->AddHitForRecAtHit(hitForRec);
b8dc484b	184	muonTrack->SetTrackID(track);
cc056de1	185
b8dc484b	186	trackSave = track;
	187	if (iHit == trackRefs->GetEntries()-1) isNewTrack = kFALSE;
	188	}
cc056de1	189
b8dc484b	190	// track parameters at vertex
b8dc484b	191	particle = fRunLoader->GetHeader()->Stack()->Particle(muonTrack->GetTrackID());
cc056de1	192
b8dc484b	193	if (particle) {
cc056de1	194
b8dc484b	195	x = particle->Vx();
	196	y = particle->Vy();
	197	z = particle->Vz();
	198	pX = particle->Px();
	199	pY = particle->Py();
	200	pZ = particle->Pz();
	201
	202	trackParam->SetBendingCoor(y);
	203	trackParam->SetNonBendingCoor(x);
	204	trackParam->SetZ(z);
	205	if (TMath::Abs(pZ) > 0) {
	206	bendingSlope = pY/pZ;
	207	nonBendingSlope = pX/pZ;
	208	}
	209	pYZ = TMath::Sqrt(pYpY+pZpZ);
	210	if (pYZ >0) inverseBendingMomentum = 1/pYZ;
	211	trackParam->SetBendingSlope(bendingSlope);
	212	trackParam->SetNonBendingSlope(nonBendingSlope);
	213	trackParam->SetInverseBendingMomentum(inverseBendingMomentum);
	214
	215	muonTrack->SetTrackParamAtVertex(trackParam);
	216	}
cc056de1	217
b8dc484b	218	AddMuonTrackReference(muonTrack);
	219	muonTrack->ResetTrackParamAtHit();
	220	muonTrack->ResetHitForRecAtHit();
	221
	222	} // end while isNewTrack
b8dc484b	223	}
	224
	225	CleanMuonTrackRef();
	226
	227	ReconstructibleTracks();
	228
	229	delete muonTrack;
	230	delete trackParam;
	231	delete hitForRec;
b8dc484b	232
	233	}
	234
	235	//____________________________________________________________________________
	236	TClonesArray* AliMUONRecoCheck::GetTrackReco()
	237	{
d19b6003	238	/// Return TClonesArray of reconstructed tracks
b8dc484b	239
45a05f07	240	fMUONData->ResetRecTracks();
	241	fMUONData->SetTreeAddress("RT");
	242	fTrackReco = fMUONData->RecTracks();
	243	fMUONData->GetRecTracks();
b8dc484b	244	fRecoTracks = fTrackReco->GetEntriesFast();
	245	return fTrackReco;
	246	}
	247	//_____________________________________________________________________________
	248	void AliMUONRecoCheck::PrintEvent() const
	249	{
d19b6003	250	/// Debug facility
b8dc484b	251
	252	AliMUONTrack *track;
	253	AliMUONHitForRec *hitForRec;
	254	TClonesArray * hitForRecAtHit = 0;
	255	Float_t xRec,yRec,zRec;
	256
	257	Int_t nTrackRef = fMuonTrackRef->GetEntriesFast();
	258
	259	printf(" ******************************* \n");
	260	printf(" nb of tracks %d \n",nTrackRef);
	261
	262	for (Int_t index = 0; index < nTrackRef; index++) {
	263	track = (AliMUONTrack*)fMuonTrackRef->At(index);
	264	hitForRecAtHit = track->GetHitForRecAtHit();
	265	Int_t nTrackHits = hitForRecAtHit->GetEntriesFast();
	266	printf(" track number %d \n",index);
	267	for (Int_t iHit = 0; iHit < nTrackHits; iHit++){
	268	hitForRec = (AliMUONHitForRec*) hitForRecAtHit->At(iHit);
	269	xRec = hitForRec->GetNonBendingCoor();
	270	yRec = hitForRec->GetBendingCoor();
	271	zRec = hitForRec->GetZ();
	272	printf(" x,y,z: %f , %f , %f \n",xRec,yRec,zRec);
	273	}
	274	}
	275	}
	276
	277	//_____________________________________________________________________________
	278	void AliMUONRecoCheck::ResetTracks() const
	279	{
d19b6003	280	/// Reset tracks
d19b6003	281
b8dc484b	282	if (fMuonTrackRef) fMuonTrackRef->Clear();
	283	}
	284	//_____________________________________________________________________________
	285	void AliMUONRecoCheck::CleanMuonTrackRef()
	286	{
d19b6003	287	/// Re-calculate hits parameters because two AliTrackReferences are recorded for
	288	/// each chamber (one when particle is entering + one when particle is leaving
	289	/// the sensitive volume)
b8dc484b	290
	291	Float_t maxGasGap = 1.; // cm
	292	AliMUONTrack track, trackNew;
	293	AliMUONHitForRec hitForRec, hitForRec1, *hitForRec2;
	294	AliMUONTrackParam trackParam, trackParam1, trackParam2, trackParamAtVertex;
	295	TClonesArray * hitForRecAtHit = 0;
	296	TClonesArray * trackParamAtHit = 0;
	297	Float_t xRec,yRec,zRec;
	298	Float_t xRec1,yRec1,zRec1;
	299	Float_t xRec2,yRec2,zRec2;
	300	Float_t bendingSlope,nonBendingSlope,bendingMomentum;
	301	Float_t bendingSlope1,nonBendingSlope1,bendingMomentum1;
	302	Float_t bendingSlope2,nonBendingSlope2,bendingMomentum2;
	303	TClonesArray *newMuonTrackRef = new TClonesArray("AliMUONTrack", 10);
	304	Int_t iHit1;
30d3ea8a	305	Int_t iChamber = 0, detElemId = 0;
b8dc484b	306	Int_t nRec = 0;
	307	Int_t nTrackHits = 0;
	308
	309	hitForRec = new AliMUONHitForRec();
	310	trackParam = new AliMUONTrackParam();
	311	trackNew = new AliMUONTrack();
	312
	313	Int_t nTrackRef = fMuonTrackRef->GetEntriesFast();
b8dc484b	314	for (Int_t index = 0; index < nTrackRef; index++) {
	315	track = (AliMUONTrack*)fMuonTrackRef->At(index);
	316	hitForRecAtHit = track->GetHitForRecAtHit();
	317	trackParamAtHit = track->GetTrackParamAtHit();
	318	trackParamAtVertex = track->GetTrackParamAtVertex();
	319	nTrackHits = hitForRecAtHit->GetEntriesFast();
	320	iHit1 = 0;
	321	while (iHit1 < nTrackHits) {
	322	hitForRec1 = (AliMUONHitForRec*) hitForRecAtHit->At(iHit1);
	323	trackParam1 = (AliMUONTrackParam*) trackParamAtHit->At(iHit1);
	324	xRec1 = hitForRec1->GetNonBendingCoor();
	325	yRec1 = hitForRec1->GetBendingCoor();
	326	zRec1 = hitForRec1->GetZ();
	327	xRec = xRec1;
	328	yRec = yRec1;
	329	zRec = zRec1;
	330	bendingSlope1 = trackParam1->GetBendingSlope();
	331	nonBendingSlope1 = trackParam1->GetNonBendingSlope();
de876dd1	332	bendingMomentum1 = 0;
	333	if (TMath::Abs(trackParam1->GetInverseBendingMomentum()) > 0)
	334	bendingMomentum1 = 1./trackParam1->GetInverseBendingMomentum();
b8dc484b	335	bendingSlope = bendingSlope1;
	336	nonBendingSlope = nonBendingSlope1;
	337	bendingMomentum = bendingMomentum1;
	338	nRec = 1;
	339	for (Int_t iHit2 = iHit1+1; iHit2 < nTrackHits; iHit2++) {
	340	hitForRec2 = (AliMUONHitForRec*) hitForRecAtHit->At(iHit2);
	341	trackParam2 = (AliMUONTrackParam*) trackParamAtHit->At(iHit2);
	342	xRec2 = hitForRec2->GetNonBendingCoor();
	343	yRec2 = hitForRec2->GetBendingCoor();
	344	zRec2 = hitForRec2->GetZ();
	345	bendingSlope2 = trackParam2->GetBendingSlope();
	346	nonBendingSlope2 = trackParam2->GetNonBendingSlope();
de876dd1	347	bendingMomentum2 = 0;
	348	if (TMath::Abs(trackParam2->GetInverseBendingMomentum()) > 0)
	349	bendingMomentum2 = 1./trackParam2->GetInverseBendingMomentum();
b8dc484b	350
b8dc484b	351	if ( TMath::Abs(zRec2-zRec1) < maxGasGap ) {
cc056de1	352
b8dc484b	353	nRec++;
	354	xRec += xRec2;
	355	yRec += yRec2;
	356	zRec += zRec2;
	357	bendingSlope += bendingSlope2;
	358	nonBendingSlope += nonBendingSlope2;
	359	bendingMomentum += bendingMomentum2;
	360	iHit1 = iHit2;
	361	}
	362
	363	} // end iHit2
	364	xRec /= (Float_t)nRec;
	365	yRec /= (Float_t)nRec;
	366	zRec /= (Float_t)nRec;
	367	bendingSlope /= (Float_t)nRec;
	368	nonBendingSlope /= (Float_t)nRec;
	369	bendingMomentum /= (Float_t)nRec;
	370
	371	hitForRec->SetNonBendingCoor(xRec);
	372	hitForRec->SetBendingCoor(yRec);
	373	hitForRec->SetZ(zRec);
30d3ea8a	374	detElemId = hitForRec->GetDetElemId();
	375	if (detElemId) iChamber = detElemId / 100 - 1;
	376	else iChamber = AliMUONConstants::ChamberNumber(zRec);
b8dc484b	377	hitForRec->SetChamberNumber(iChamber);
	378	hitForRec->SetBendingReso2(0.0);
	379	hitForRec->SetNonBendingReso2(0.0);
	380	trackParam->SetNonBendingCoor(xRec);
	381	trackParam->SetBendingCoor(yRec);
	382	trackParam->SetZ(zRec);
	383	trackParam->SetNonBendingSlope(nonBendingSlope);
	384	trackParam->SetBendingSlope(bendingSlope);
de876dd1	385	if (TMath::Abs(bendingMomentum) > 0)
de876dd1	386	trackParam->SetInverseBendingMomentum(1./bendingMomentum);
b8dc484b	387
b8dc484b	388	trackNew->AddHitForRecAtHit(hitForRec);
de2cd600	389	trackNew->AddTrackParamAtHit(trackParam,hitForRec);
b8dc484b	390
	391	iHit1++;
	392	} // end iHit1
	393
	394	trackNew->SetTrackID(track->GetTrackID());
	395	trackNew->SetTrackParamAtVertex(trackParamAtVertex);
	396	{new ((newMuonTrackRef)[newMuonTrackRef->GetEntriesFast()]) AliMUONTrack(trackNew);}
	397	trackNew->ResetHitForRecAtHit();
	398	trackNew->ResetTrackParamAtHit();
	399
	400	} // end trackRef
	401
	402	fMuonTrackRef->Clear();
	403	nTrackRef = newMuonTrackRef->GetEntriesFast();
	404	for (Int_t index = 0; index < nTrackRef; index++) {
	405	track = (AliMUONTrack*)newMuonTrackRef->At(index);
	406	AddMuonTrackReference(track);
	407	}
	408
	409
	410	delete trackNew;
	411	delete hitForRec;
	412	delete trackParam;
29fc2c86	413	newMuonTrackRef->Delete();
b8dc484b	414	delete newMuonTrackRef;
	415
	416	}
	417
	418	//_____________________________________________________________________________
	419	void AliMUONRecoCheck::ReconstructibleTracks()
	420	{
d19b6003	421	/// Calculate the number of reconstructible tracks
b8dc484b	422
	423	AliMUONTrack* track;
	424	TClonesArray* hitForRecAtHit = NULL;
	425	AliMUONHitForRec* hitForRec;
	426	Float_t zRec;
	427	Int_t nTrackRef, nTrackHits;
	428	Int_t isChamberInTrack[10];
	429	Int_t iChamber = 0;
	430	Bool_t isTrackOK = kTRUE;
	431
	432	fReconstructibleTracks = 0;
	433
	434	nTrackRef = fMuonTrackRef->GetEntriesFast();
	435	for (Int_t index = 0; index < nTrackRef; index++) {
	436	track = (AliMUONTrack*)fMuonTrackRef->At(index);
	437	hitForRecAtHit = track->GetHitForRecAtHit();
	438	nTrackHits = hitForRecAtHit->GetEntriesFast();
	439	for (Int_t ch = 0; ch < 10; ch++) isChamberInTrack[ch] = 0;
	440
	441	for ( Int_t iHit = 0; iHit < nTrackHits; iHit++) {
	442	hitForRec = (AliMUONHitForRec*) hitForRecAtHit->At(iHit);
	443	zRec = hitForRec->GetZ();
	444	iChamber = hitForRec->GetChamberNumber();
	445	if (iChamber < 0 \|\| iChamber > 10) continue;
	446	isChamberInTrack[iChamber] = 1;
cc056de1	447	}
	448	// track is reconstructible if the particle is depositing a hit
	449	// in the following chamber combinations:
	450
b8dc484b	451	isTrackOK = kTRUE;
cc056de1	452	if (!isChamberInTrack[0] && !isChamberInTrack[1]) isTrackOK = kFALSE;
	453	if (!isChamberInTrack[2] && !isChamberInTrack[3]) isTrackOK = kFALSE;
	454	if (!isChamberInTrack[4] && !isChamberInTrack[5]) isTrackOK = kFALSE;
	455	Int_t nHitsInLastStations=0;
	456	for (Int_t ch = 6; ch < AliMUONConstants::NTrackingCh(); ch++)
	457	if (isChamberInTrack[ch]) nHitsInLastStations++;
	458	if(nHitsInLastStations < 3) isTrackOK = kFALSE;
	459
	460	if (isTrackOK) fReconstructibleTracks++;
b8dc484b	461	if (!isTrackOK) fMuonTrackRef->Remove(track); // remove non reconstructible tracks
	462	}
	463	fMuonTrackRef->Compress();
	464	}
	465