[u/mrichter/AliRoot.git] / MFT / AliMFTClusterFinder.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.                  *
 **************************************************************************/

//====================================================================================================================================================
//
//      Class for finding and building the clusters of the ALICE Muon Forward Tracker
//
//      Contact author: antonio.uras@cern.ch
//
//====================================================================================================================================================

#include "AliLog.h"
#include "TObjArray.h"
#include "TClonesArray.h"
#include "AliMFTDigit.h"
#include "AliMFTCluster.h"
#include "AliMFTSegmentation.h"
#include "TTree.h"
#include "TMath.h"
#include "AliMFTConstants.h"
#include "AliMFTClusterFinder.h"
#include "TRandom.h"

const Double_t AliMFTClusterFinder::fCutForAvailableDigits = AliMFTConstants::fCutForAvailableDigits;
const Double_t AliMFTClusterFinder::fCutForAttachingDigits = AliMFTConstants::fCutForAttachingDigits;
const Double_t AliMFTClusterFinder::fMisalignmentMagnitude = AliMFTConstants::fMisalignmentMagnitude;

ClassImp(AliMFTClusterFinder)

//====================================================================================================================================================

AliMFTClusterFinder::AliMFTClusterFinder() : 
  TObject(),
  fDigitsInCluster(0),
  fCurrentDigit(0),
  fCurrentCluster(0),
  fSegmentation(0),
  fNPlanes(0),
  fApplyMisalignment(kFALSE),
  fStopWatch(0)
{

  // Default constructor
  
  for (Int_t iPlane=0; iPlane<fNMaxPlanes; iPlane++) fClustersPerPlane[iPlane] = NULL;
  fDigitsInCluster = new TClonesArray("AliMFTDigit", fNMaxDigitsPerCluster);
  fDigitsInCluster -> SetOwner(kTRUE);
  fStopWatch = new TStopwatch();
  fStopWatch -> Reset();

}

//====================================================================================================================================================

AliMFTClusterFinder::~AliMFTClusterFinder() {
  
  AliDebug(1, "Deleting AliMFTClusterFinder...");
  
  for (Int_t iPlane=0; iPlane<fNMaxPlanes; iPlane++) {
    if (fClustersPerPlane[iPlane]) fClustersPerPlane[iPlane]->Delete(); delete fClustersPerPlane[iPlane]; fClustersPerPlane[iPlane] = 0x0;
  }
  if (fDigitsInCluster) fDigitsInCluster->Delete(); delete fDigitsInCluster; fDigitsInCluster = NULL;
  delete fSegmentation; fSegmentation=NULL;

  delete fStopWatch;
  
  AliDebug(1, "... done!");
  
}

//====================================================================================================================================================

void AliMFTClusterFinder::Clear(const Option_t* /*opt*/) {
  
  AliDebug(1, "Clearing AliMFTClusterFinder...");
  
  for (Int_t iPlane=0; iPlane<fNMaxPlanes; iPlane++) {
    if(fClustersPerPlane[iPlane]) fClustersPerPlane[iPlane]->Clear("C"); 
  }
  if(fDigitsInCluster) fDigitsInCluster->Clear("C");	
  fSegmentation->Clear("C"); 
  
  AliDebug(1, "... done!");
  
}

//====================================================================================================================================================

void AliMFTClusterFinder::Init(const Char_t *nameGeomFile) {

  fSegmentation = new AliMFTSegmentation(nameGeomFile);
  fNPlanes = fSegmentation -> GetNPlanes();
  
}

//====================================================================================================================================================

void AliMFTClusterFinder::StartEvent() {

  // Cleaning up and preparation for the clustering procedure

  AliDebug(1, "Starting Event...");
  
  for (Int_t iPlane=0; iPlane<fNPlanes; iPlane++) {
    fClustersPerPlane[iPlane]->Delete();
  }

  AliDebug(1, "... done!");

}

//====================================================================================================================================================

void AliMFTClusterFinder::DigitsToClusters(const TObjArray *pDigitList) {

  // where the clusterization is performed

  AliInfo("Starting Clusterization for MFT");
  AliDebug(1, Form("nPlanes = %d", fNPlanes));

  if (!fStopWatch) fStopWatch = new TStopwatch();
  fStopWatch -> Reset();

  StartEvent(); 
  Bool_t isDigAvailableForNewCluster = kTRUE;
  
  TClonesArray *myDigitList = 0;

  for (Int_t iPlane=0; iPlane<fNPlanes; iPlane++) {

    AliDebug(1, Form("Plane %02d", iPlane));

    Int_t nDetElem = fSegmentation->GetPlane(iPlane)->GetNActiveElements();
    TClonesArray *clustersPerDetElem[fNMaxDetElemPerPlane] = {0};
    for (Int_t iDetElem=0; iDetElem<nDetElem; iDetElem++) clustersPerDetElem[iDetElem] = new TClonesArray("AliMFTCluster");

    myDigitList = (TClonesArray*) pDigitList->At(iPlane);

    AliDebug(1, Form("myDigitList->GetEntries() = %d", myDigitList->GetEntries()));

    Int_t cycleOverDigits = 0;
    Double_t myCutForAvailableDigits = 0;
    
    Int_t currentDetElem = -1;
    Int_t currentDetElemLocal = -1;
    Bool_t areThereSkippedDigits = kFALSE;

    fStopWatch -> Start();

    while (myDigitList->GetEntries()) {

      for (Int_t iDig=0; iDig<myDigitList->GetEntries(); iDig++) {

	fCurrentDigit = (AliMFTDigit*) myDigitList->At(iDig);

	if (!iDig) {
	  if (fCurrentDigit->GetDetElemID() != currentDetElem) {      
	    // first iteration over the digits of a specific detection element
	    currentDetElem = fCurrentDigit->GetDetElemID();
	    currentDetElemLocal = fSegmentation->GetDetElemLocalID(currentDetElem);
	    cycleOverDigits = 0;
	    myCutForAvailableDigits = fCutForAvailableDigits;
	  }
	  else if (fCurrentDigit->GetDetElemID()==currentDetElem && areThereSkippedDigits) {
	    // second (or further) iteration over the digits of a specific detection element
	    cycleOverDigits++;
	    myCutForAvailableDigits -= 0.5;
	  }
	  areThereSkippedDigits = kFALSE;
	}
	else {
	  areThereSkippedDigits = kTRUE;
	  if (fCurrentDigit->GetDetElemID() != currentDetElem) break;
	}

	isDigAvailableForNewCluster = kTRUE;

	for (Int_t iCluster=0; iCluster<clustersPerDetElem[currentDetElemLocal]->GetEntries(); iCluster++) {
	  fCurrentCluster = (AliMFTCluster*) clustersPerDetElem[currentDetElemLocal]->At(iCluster);
	  if (fCurrentCluster->GetDistanceFromPixel(fCurrentDigit) < fCutForAttachingDigits) { 
	    fCurrentCluster->AddPixel(fCurrentDigit); 
	    myDigitList->Remove(fCurrentDigit);
	    myDigitList->Compress();
	    iDig--;
	    isDigAvailableForNewCluster = kFALSE;
	    break; 
	  }
	  if (fCurrentCluster->GetDistanceFromPixel(fCurrentDigit) < myCutForAvailableDigits) isDigAvailableForNewCluster=kFALSE;
	}

	if (isDigAvailableForNewCluster) {
	  AliMFTCluster *newCluster = new AliMFTCluster();
	  newCluster->AddPixel(fCurrentDigit);
	  myDigitList->Remove(fCurrentDigit);
	  myDigitList->Compress();
	  iDig--;
	  new ((*clustersPerDetElem[currentDetElemLocal])[clustersPerDetElem[currentDetElemLocal]->GetEntries()]) AliMFTCluster(*newCluster);
	  delete newCluster;
	}
	
      }   // end of cycle over the digits

    }   // no more digits to check in current plane!

    fStopWatch -> Print("m");

    printf("Plane %d: clusters found in %f seconds\n",iPlane,fStopWatch->CpuTime());
    fStopWatch->Start();

    // Now we merge the cluster lists coming from each detection element, to build the cluster list of the plane

    Double_t misalignmentPhi = 2.*TMath::Pi()*gRandom->Rndm();
    Double_t misalignmentX   = fMisalignmentMagnitude*TMath::Cos(misalignmentPhi);
    Double_t misalignmentY   = fMisalignmentMagnitude*TMath::Sin(misalignmentPhi);

    AliMFTCluster *newCluster = NULL;
    for (Int_t iDetElem=0; iDetElem<nDetElem; iDetElem++) {
      for (Int_t iCluster=0; iCluster<clustersPerDetElem[iDetElem]->GetEntries(); iCluster++) {
	newCluster = (AliMFTCluster*) (clustersPerDetElem[iDetElem]->At(iCluster));
	newCluster -> TerminateCluster();
	newCluster -> SetClusterEditable(kTRUE);
	if (TMath::Abs(newCluster->GetZ())<TMath::Abs(fSegmentation->GetPlane(iPlane)->GetZCenter())) newCluster->SetClusterFront(kTRUE);
	else                                                                                          newCluster->SetClusterFront(kFALSE);
	if (fApplyMisalignment) {
	  newCluster -> SetX(newCluster->GetX()+misalignmentX);
	  newCluster -> SetY(newCluster->GetY()+misalignmentY);
	}
	newCluster -> SetClusterEditable(kFALSE);

	new ((*fClustersPerPlane[iPlane])[fClustersPerPlane[iPlane]->GetEntries()]) AliMFTCluster(*newCluster);
      }
    }

    printf("%d Clusters in plane %02d merged in %f seconds\n", fClustersPerPlane[iPlane]->GetEntries(), iPlane, fStopWatch->CpuTime());

    for (Int_t iDetElem=0; iDetElem<nDetElem; iDetElem++) {
      clustersPerDetElem[iDetElem] -> Delete();
      delete clustersPerDetElem[iDetElem];
    }

    myDigitList -> Delete();

  }  // end of cycle over the planes

}

//====================================================================================================================================================

void AliMFTClusterFinder::MakeClusterBranch(TTree *treeCluster) {

  // Creating the cluster branches, one for each plane (see AliMFTReconstructor::Reconstruct)

  AliDebug(1, "Making Cluster Branch");

  CreateClusters();

  if (treeCluster) {
    for(Int_t iPlane=0; iPlane<fNPlanes; iPlane++) {
      AliDebug(1, Form("Setting Branch Plane_%02d for treeCluster",iPlane));
      if (treeCluster->GetBranch(Form("Plane_%02d",iPlane))) continue;
      AliDebug(1, Form("Branch Plane_%02d does not exist, creating!",iPlane));
      treeCluster->Branch(Form("Plane_%02d",iPlane), &(fClustersPerPlane[iPlane])); 
    }
  }

}

//====================================================================================================================================================

void AliMFTClusterFinder::SetClusterTreeAddress(TTree *treeCluster) {

  // Addressing the cluster branches, one for each plane (see AliMFTReconstructor::Reconstruct)

  if (treeCluster && treeCluster->GetBranch("Plane_00")) {
    CreateClusters();
    for(Int_t iPlane=0; iPlane<fNPlanes; iPlane++) {
      if (treeCluster->GetBranch(Form("Plane_%02d",iPlane))) {
	treeCluster->SetBranchAddress(Form("Plane_%02d",iPlane), &(fClustersPerPlane[iPlane]));
      }
      else AliError(Form("No branch available with name Plane_%02d", iPlane));
    }
  }

}

//====================================================================================================================================================

void AliMFTClusterFinder::CreateClusters() {

  // create cluster list

  AliDebug(1, Form("Creating clusters list: nPlanes = %d",fNPlanes));

  if (fClustersPerPlane[0]) return;
  
  for(Int_t iPlane=0; iPlane<fNPlanes; iPlane++) {
    AliDebug(1, Form("plane %02d", iPlane));
    fClustersPerPlane[iPlane] = new TClonesArray("AliMFTCluster");
    fClustersPerPlane[iPlane] -> SetOwner(kTRUE);

  }

}

//====================================================================================================================================================
Commit	Line	Data
	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	// Class for finding and building the clusters of the ALICE Muon Forward Tracker
	19	//
	20	// Contact author: antonio.uras@cern.ch
	21	//
	22	//====================================================================================================================================================
	23
	24	#include "AliLog.h"
	25	#include "TObjArray.h"
	26	#include "TClonesArray.h"
	27	#include "AliMFTDigit.h"
	28	#include "AliMFTCluster.h"
	29	#include "AliMFTSegmentation.h"
	30	#include "TTree.h"
	31	#include "TMath.h"
	32	#include "AliMFTConstants.h"
	33	#include "AliMFTClusterFinder.h"
	34	#include "TRandom.h"
	35
	36	const Double_t AliMFTClusterFinder::fCutForAvailableDigits = AliMFTConstants::fCutForAvailableDigits;
	37	const Double_t AliMFTClusterFinder::fCutForAttachingDigits = AliMFTConstants::fCutForAttachingDigits;
	38	const Double_t AliMFTClusterFinder::fMisalignmentMagnitude = AliMFTConstants::fMisalignmentMagnitude;
	39
	40	ClassImp(AliMFTClusterFinder)
	41
	42	//====================================================================================================================================================
	43
	44	AliMFTClusterFinder::AliMFTClusterFinder() :
	45	TObject(),
	46	fDigitsInCluster(0),
	47	fCurrentDigit(0),
	48	fCurrentCluster(0),
	49	fSegmentation(0),
	50	fNPlanes(0),
	51	fApplyMisalignment(kFALSE),
	52	fStopWatch(0)
	53	{
	54
	55	// Default constructor
	56
	57	for (Int_t iPlane=0; iPlane<fNMaxPlanes; iPlane++) fClustersPerPlane[iPlane] = NULL;
	58	fDigitsInCluster = new TClonesArray("AliMFTDigit", fNMaxDigitsPerCluster);
	59	fDigitsInCluster -> SetOwner(kTRUE);
	60	fStopWatch = new TStopwatch();
	61	fStopWatch -> Reset();
	62
	63	}
	64
	65	//====================================================================================================================================================
	66
	67	AliMFTClusterFinder::~AliMFTClusterFinder() {
	68
	69	AliDebug(1, "Deleting AliMFTClusterFinder...");
	70
	71	for (Int_t iPlane=0; iPlane<fNMaxPlanes; iPlane++) {
	72	if (fClustersPerPlane[iPlane]) fClustersPerPlane[iPlane]->Delete(); delete fClustersPerPlane[iPlane]; fClustersPerPlane[iPlane] = 0x0;
	73	}
	74	if (fDigitsInCluster) fDigitsInCluster->Delete(); delete fDigitsInCluster; fDigitsInCluster = NULL;
	75	delete fSegmentation; fSegmentation=NULL;
	76
	77	delete fStopWatch;
	78
	79	AliDebug(1, "... done!");
	80
	81	}
	82
	83	//====================================================================================================================================================
	84
	85	void AliMFTClusterFinder::Clear(const Option_t* /opt/) {
	86
	87	AliDebug(1, "Clearing AliMFTClusterFinder...");
	88
	89	for (Int_t iPlane=0; iPlane<fNMaxPlanes; iPlane++) {
	90	if(fClustersPerPlane[iPlane]) fClustersPerPlane[iPlane]->Clear("C");
	91	}
	92	if(fDigitsInCluster) fDigitsInCluster->Clear("C");
	93	fSegmentation->Clear("C");
	94
	95	AliDebug(1, "... done!");
	96
	97	}
	98
	99	//====================================================================================================================================================
	100
	101	void AliMFTClusterFinder::Init(const Char_t *nameGeomFile) {
	102
	103	fSegmentation = new AliMFTSegmentation(nameGeomFile);
	104	fNPlanes = fSegmentation -> GetNPlanes();
	105
	106	}
	107
	108	//====================================================================================================================================================
	109
	110	void AliMFTClusterFinder::StartEvent() {
	111
	112	// Cleaning up and preparation for the clustering procedure
	113
	114	AliDebug(1, "Starting Event...");
	115
	116	for (Int_t iPlane=0; iPlane<fNPlanes; iPlane++) {
	117	fClustersPerPlane[iPlane]->Delete();
	118	}
	119
	120	AliDebug(1, "... done!");
	121
	122	}
	123
	124	//====================================================================================================================================================
	125
	126	void AliMFTClusterFinder::DigitsToClusters(const TObjArray *pDigitList) {
	127
	128	// where the clusterization is performed
	129
	130	AliInfo("Starting Clusterization for MFT");
	131	AliDebug(1, Form("nPlanes = %d", fNPlanes));
	132
	133	if (!fStopWatch) fStopWatch = new TStopwatch();
	134	fStopWatch -> Reset();
	135
	136	StartEvent();
	137	Bool_t isDigAvailableForNewCluster = kTRUE;
	138
	139	TClonesArray *myDigitList = 0;
	140
	141	for (Int_t iPlane=0; iPlane<fNPlanes; iPlane++) {
	142
	143	AliDebug(1, Form("Plane %02d", iPlane));
	144
	145	Int_t nDetElem = fSegmentation->GetPlane(iPlane)->GetNActiveElements();
	146	TClonesArray *clustersPerDetElem[fNMaxDetElemPerPlane] = {0};
	147	for (Int_t iDetElem=0; iDetElem<nDetElem; iDetElem++) clustersPerDetElem[iDetElem] = new TClonesArray("AliMFTCluster");
	148
	149	myDigitList = (TClonesArray*) pDigitList->At(iPlane);
	150
	151	AliDebug(1, Form("myDigitList->GetEntries() = %d", myDigitList->GetEntries()));
	152
	153	Int_t cycleOverDigits = 0;
	154	Double_t myCutForAvailableDigits = 0;
	155
	156	Int_t currentDetElem = -1;
	157	Int_t currentDetElemLocal = -1;
	158	Bool_t areThereSkippedDigits = kFALSE;
	159
	160	fStopWatch -> Start();
	161
	162	while (myDigitList->GetEntries()) {
	163
	164	for (Int_t iDig=0; iDig<myDigitList->GetEntries(); iDig++) {
	165
	166	fCurrentDigit = (AliMFTDigit*) myDigitList->At(iDig);
	167
	168	if (!iDig) {
	169	if (fCurrentDigit->GetDetElemID() != currentDetElem) {
	170	// first iteration over the digits of a specific detection element
	171	currentDetElem = fCurrentDigit->GetDetElemID();
	172	currentDetElemLocal = fSegmentation->GetDetElemLocalID(currentDetElem);
	173	cycleOverDigits = 0;
	174	myCutForAvailableDigits = fCutForAvailableDigits;
	175	}
	176	else if (fCurrentDigit->GetDetElemID()==currentDetElem && areThereSkippedDigits) {
	177	// second (or further) iteration over the digits of a specific detection element
	178	cycleOverDigits++;
	179	myCutForAvailableDigits -= 0.5;
	180	}
	181	areThereSkippedDigits = kFALSE;
	182	}
	183	else {
	184	areThereSkippedDigits = kTRUE;
	185	if (fCurrentDigit->GetDetElemID() != currentDetElem) break;
	186	}
	187
	188	isDigAvailableForNewCluster = kTRUE;
	189
	190	for (Int_t iCluster=0; iCluster<clustersPerDetElem[currentDetElemLocal]->GetEntries(); iCluster++) {
	191	fCurrentCluster = (AliMFTCluster*) clustersPerDetElem[currentDetElemLocal]->At(iCluster);
	192	if (fCurrentCluster->GetDistanceFromPixel(fCurrentDigit) < fCutForAttachingDigits) {
	193	fCurrentCluster->AddPixel(fCurrentDigit);
	194	myDigitList->Remove(fCurrentDigit);
	195	myDigitList->Compress();
	196	iDig--;
	197	isDigAvailableForNewCluster = kFALSE;
	198	break;
	199	}
	200	if (fCurrentCluster->GetDistanceFromPixel(fCurrentDigit) < myCutForAvailableDigits) isDigAvailableForNewCluster=kFALSE;
	201	}
	202
	203	if (isDigAvailableForNewCluster) {
	204	AliMFTCluster *newCluster = new AliMFTCluster();
	205	newCluster->AddPixel(fCurrentDigit);
	206	myDigitList->Remove(fCurrentDigit);
	207	myDigitList->Compress();
	208	iDig--;
	209	new ((clustersPerDetElem[currentDetElemLocal])[clustersPerDetElem[currentDetElemLocal]->GetEntries()]) AliMFTCluster(newCluster);
	210	delete newCluster;
	211	}
	212
	213	} // end of cycle over the digits
	214
	215	} // no more digits to check in current plane!
	216
	217	fStopWatch -> Print("m");
	218
	219	printf("Plane %d: clusters found in %f seconds\n",iPlane,fStopWatch->CpuTime());
	220	fStopWatch->Start();
	221
	222	// Now we merge the cluster lists coming from each detection element, to build the cluster list of the plane
	223
	224	Double_t misalignmentPhi = 2.TMath::Pi()gRandom->Rndm();
	225	Double_t misalignmentX = fMisalignmentMagnitude*TMath::Cos(misalignmentPhi);
	226	Double_t misalignmentY = fMisalignmentMagnitude*TMath::Sin(misalignmentPhi);
	227
	228	AliMFTCluster *newCluster = NULL;
	229	for (Int_t iDetElem=0; iDetElem<nDetElem; iDetElem++) {
	230	for (Int_t iCluster=0; iCluster<clustersPerDetElem[iDetElem]->GetEntries(); iCluster++) {
	231	newCluster = (AliMFTCluster*) (clustersPerDetElem[iDetElem]->At(iCluster));
	232	newCluster -> TerminateCluster();
	233	newCluster -> SetClusterEditable(kTRUE);
	234	if (TMath::Abs(newCluster->GetZ())<TMath::Abs(fSegmentation->GetPlane(iPlane)->GetZCenter())) newCluster->SetClusterFront(kTRUE);
	235	else newCluster->SetClusterFront(kFALSE);
	236	if (fApplyMisalignment) {
	237	newCluster -> SetX(newCluster->GetX()+misalignmentX);
	238	newCluster -> SetY(newCluster->GetY()+misalignmentY);
	239	}
	240	newCluster -> SetClusterEditable(kFALSE);
	241
	242	new ((fClustersPerPlane[iPlane])[fClustersPerPlane[iPlane]->GetEntries()]) AliMFTCluster(newCluster);
	243	}
	244	}
	245
	246	printf("%d Clusters in plane %02d merged in %f seconds\n", fClustersPerPlane[iPlane]->GetEntries(), iPlane, fStopWatch->CpuTime());
	247
	248	for (Int_t iDetElem=0; iDetElem<nDetElem; iDetElem++) {
	249	clustersPerDetElem[iDetElem] -> Delete();
	250	delete clustersPerDetElem[iDetElem];
	251	}
	252
	253	myDigitList -> Delete();
	254
	255	} // end of cycle over the planes
	256
	257	}
	258
	259	//====================================================================================================================================================
	260
	261	void AliMFTClusterFinder::MakeClusterBranch(TTree *treeCluster) {
	262
	263	// Creating the cluster branches, one for each plane (see AliMFTReconstructor::Reconstruct)
	264
	265	AliDebug(1, "Making Cluster Branch");
	266
	267	CreateClusters();
	268
	269	if (treeCluster) {
	270	for(Int_t iPlane=0; iPlane<fNPlanes; iPlane++) {
	271	AliDebug(1, Form("Setting Branch Plane_%02d for treeCluster",iPlane));
	272	if (treeCluster->GetBranch(Form("Plane_%02d",iPlane))) continue;
	273	AliDebug(1, Form("Branch Plane_%02d does not exist, creating!",iPlane));
	274	treeCluster->Branch(Form("Plane_%02d",iPlane), &(fClustersPerPlane[iPlane]));
	275	}
	276	}
	277
	278	}
	279
	280	//====================================================================================================================================================
	281
	282	void AliMFTClusterFinder::SetClusterTreeAddress(TTree *treeCluster) {
	283
	284	// Addressing the cluster branches, one for each plane (see AliMFTReconstructor::Reconstruct)
	285
	286	if (treeCluster && treeCluster->GetBranch("Plane_00")) {
	287	CreateClusters();
	288	for(Int_t iPlane=0; iPlane<fNPlanes; iPlane++) {
	289	if (treeCluster->GetBranch(Form("Plane_%02d",iPlane))) {
	290	treeCluster->SetBranchAddress(Form("Plane_%02d",iPlane), &(fClustersPerPlane[iPlane]));
	291	}
	292	else AliError(Form("No branch available with name Plane_%02d", iPlane));
	293	}
	294	}
	295
	296	}
	297
	298	//====================================================================================================================================================
	299
	300	void AliMFTClusterFinder::CreateClusters() {
	301
	302	// create cluster list
	303
	304	AliDebug(1, Form("Creating clusters list: nPlanes = %d",fNPlanes));
	305
	306	if (fClustersPerPlane[0]) return;
	307
	308	for(Int_t iPlane=0; iPlane<fNPlanes; iPlane++) {
	309	AliDebug(1, Form("plane %02d", iPlane));
	310	fClustersPerPlane[iPlane] = new TClonesArray("AliMFTCluster");
	311	fClustersPerPlane[iPlane] -> SetOwner(kTRUE);
	312
	313	}
	314
	315	}
	316
	317	//====================================================================================================================================================