/*
$Log$
+Revision 1.15.6.2 2002/07/24 10:09:30 alibrary
+Updating VirtualMC
+
+Revision 1.17 2002/06/12 09:54:35 cblume
+Update of tracking code provided by Sergei
+
+Revision 1.16 2002/03/25 20:01:30 cblume
+Introduce parameter class
+
+Revision 1.15 2001/11/14 12:09:11 cblume
+Use correct name for digitizer
+
+Revision 1.14 2001/11/14 10:50:45 cblume
+Changes in digits IO. Add merging of summable digits
+
+Revision 1.13 2001/05/28 17:07:58 hristov
+Last minute changes; ExB correction in AliTRDclusterizerV1; taking into account of material in G10 TEC frames and material between TEC planes (C.Blume,S.Sedykh)
+
+Revision 1.12 2001/05/21 17:42:58 hristov
+Constant casted to avoid the ambiguity
+
+Revision 1.11 2001/05/21 16:45:47 hristov
+Last minute changes (C.Blume)
+
+Revision 1.10 2001/05/07 08:06:44 cblume
+Speedup of the code. Create only AliTRDcluster
+
+Revision 1.9 2000/11/01 14:53:20 cblume
+Merge with TRD-develop
+
+Revision 1.1.4.5 2000/10/15 23:40:01 cblume
+Remove AliTRDconst
+
+Revision 1.1.4.4 2000/10/06 16:49:46 cblume
+Made Getters const
+
+Revision 1.1.4.3 2000/10/04 16:34:58 cblume
+Replace include files by forward declarations
+
+Revision 1.1.4.2 2000/09/22 14:49:49 cblume
+Adapted to tracking code
+
+Revision 1.8 2000/10/02 21:28:19 fca
+Removal of useless dependecies via forward declarations
+
+Revision 1.7 2000/06/27 13:08:50 cblume
+Changed to Copy(TObject &A) to appease the HP-compiler
+
+Revision 1.6 2000/06/09 11:10:07 cblume
+Compiler warnings and coding conventions, next round
+
+Revision 1.5 2000/06/08 18:32:58 cblume
+Make code compliant to coding conventions
+
Revision 1.4 2000/06/07 16:27:01 cblume
Try to remove compiler warnings on Sun and HP
///////////////////////////////////////////////////////////////////////////////
#include <TF1.h>
+#include <TTree.h>
+#include <TH1.h>
+#include <TFile.h>
+
+#include "AliRun.h"
+#include "AliTRD.h"
#include "AliTRDclusterizerV1.h"
#include "AliTRDmatrix.h"
#include "AliTRDgeometry.h"
#include "AliTRDdigitizer.h"
-#include "AliTRDrecPoint.h"
#include "AliTRDdataArrayF.h"
+#include "AliTRDdataArrayI.h"
+#include "AliTRDdigitsManager.h"
+#include "AliTRDparameter.h"
ClassImp(AliTRDclusterizerV1)
// AliTRDclusterizerV1 default constructor
//
- fDigitsManager = NULL;
+ fDigitsManager = 0;
}
//
fDigitsManager = new AliTRDdigitsManager();
-
- Init();
+ fDigitsManager->CreateArrays();
}
//_____________________________________________________________________________
-AliTRDclusterizerV1::AliTRDclusterizerV1(AliTRDclusterizerV1 &c)
+AliTRDclusterizerV1::AliTRDclusterizerV1(const AliTRDclusterizerV1 &c)
{
//
// AliTRDclusterizerV1 copy constructor
//
- c.Copy(*this);
+ ((AliTRDclusterizerV1 &) c).Copy(*this);
}
if (fDigitsManager) {
delete fDigitsManager;
+ fDigitsManager = NULL;
}
}
//_____________________________________________________________________________
-void AliTRDclusterizerV1::Copy(AliTRDclusterizerV1 &c)
+AliTRDclusterizerV1 &AliTRDclusterizerV1::operator=(const AliTRDclusterizerV1 &c)
{
//
- // Copy function
+ // Assignment operator
//
- c.fClusMaxThresh = fClusMaxThresh;
- c.fClusSigThresh = fClusSigThresh;
- c.fClusMethod = fClusMethod;
- c.fDigitsManager = NULL;
-
- AliTRDclusterizer::Copy(c);
+ if (this != &c) ((AliTRDclusterizerV1 &) c).Copy(*this);
+ return *this;
}
//_____________________________________________________________________________
-void AliTRDclusterizerV1::Init()
+void AliTRDclusterizerV1::Copy(TObject &c)
{
//
- // Initializes the cluster finder
+ // Copy function
//
- // The default parameter for the clustering
- fClusMaxThresh = 5.0;
- fClusSigThresh = 2.0;
- fClusMethod = 1;
+ ((AliTRDclusterizerV1 &) c).fDigitsManager = 0;
+
+ AliTRDclusterizer::Copy(c);
}
//
if (!fInputFile) {
- printf("AliTRDclusterizerV1::ReadDigits -- ");
+ printf("<AliTRDclusterizerV1::ReadDigits> ");
printf("No input file open\n");
return kFALSE;
}
+ fDigitsManager->Open(fInputFile->GetName());
+
// Read in the digit arrays
return (fDigitsManager->ReadDigits());
}
//_____________________________________________________________________________
-Bool_t AliTRDclusterizerV1::MakeCluster()
+Bool_t AliTRDclusterizerV1::MakeClusters()
{
//
// Generates the cluster.
Int_t row, col, time;
- // Get the pointer to the detector class and check for version 1
- AliTRD *trd = (AliTRD*) gAlice->GetDetector("TRD");
- if (trd->IsVersion() != 1) {
- printf("AliTRDclusterizerV1::MakeCluster -- ");
+ if (fTRD->IsVersion() != 1) {
+ printf("<AliTRDclusterizerV1::MakeCluster> ");
printf("TRD must be version 1 (slow simulator).\n");
return kFALSE;
}
// Get the geometry
- AliTRDgeometry *geo = trd->GetGeometry();
+ AliTRDgeometry *geo = fTRD->GetGeometry();
- printf("AliTRDclusterizerV1::MakeCluster -- ");
- printf("Start creating clusters.\n");
+ // Create a default parameter class if none is defined
+ if (!fPar) {
+ fPar = new AliTRDparameter("TRDparameter","Standard TRD parameter");
+ printf("<AliTRDclusterizerV1::MakeCluster> ");
+ printf("Create the default parameter object.\n");
+ }
+
+ Float_t timeBinSize = fPar->GetTimeBinSize();
+ // Half of ampl.region
+ const Float_t kAmWidth = AliTRDgeometry::AmThick()/2.;
+
+ Float_t omegaTau = fPar->GetOmegaTau();
+ if (fVerbose > 0) {
+ printf("<AliTRDclusterizerV1::MakeCluster> ");
+ printf("OmegaTau = %f \n",omegaTau);
+ printf("<AliTRDclusterizerV1::MakeCluster> ");
+ printf("Start creating clusters.\n");
+ }
AliTRDdataArrayI *digits;
+ AliTRDdataArrayI *track0;
+ AliTRDdataArrayI *track1;
+ AliTRDdataArrayI *track2;
- // Parameters
- Float_t maxThresh = fClusMaxThresh; // threshold value for maximum
- Float_t signalThresh = fClusSigThresh; // threshold value for digit signal
- Int_t clusteringMethod = fClusMethod; // clustering method option (for testing)
+ // Threshold value for the maximum
+ Int_t maxThresh = fPar->GetClusMaxThresh();
+ // Threshold value for the digit signal
+ Int_t sigThresh = fPar->GetClusSigThresh();
// Iteration limit for unfolding procedure
const Float_t kEpsilon = 0.01;
const Int_t kNclus = 3;
const Int_t kNsig = 5;
+ const Int_t kNtrack = 3 * kNclus;
+
+ Int_t iType = 0;
+ Int_t iUnfold = 0;
+
+ Float_t ratioLeft = 1.0;
+ Float_t ratioRight = 1.0;
+
+ Float_t padSignal[kNsig];
+ Float_t clusterSignal[kNclus];
+ Float_t clusterPads[kNclus];
+ Int_t clusterDigit[kNclus];
+ Int_t clusterTracks[kNtrack];
Int_t chamBeg = 0;
- Int_t chamEnd = kNcham;
- if (trd->GetSensChamber() >= 0) {
- chamBeg = trd->GetSensChamber();
+ Int_t chamEnd = AliTRDgeometry::Ncham();
+ if (fTRD->GetSensChamber() >= 0) {
+ chamBeg = fTRD->GetSensChamber();
chamEnd = chamBeg + 1;
}
Int_t planBeg = 0;
- Int_t planEnd = kNplan;
- if (trd->GetSensPlane() >= 0) {
- planBeg = trd->GetSensPlane();
+ Int_t planEnd = AliTRDgeometry::Nplan();
+ if (fTRD->GetSensPlane() >= 0) {
+ planBeg = fTRD->GetSensPlane();
planEnd = planBeg + 1;
}
Int_t sectBeg = 0;
- Int_t sectEnd = kNsect;
+ Int_t sectEnd = AliTRDgeometry::Nsect();
- // *** Start clustering *** in every chamber
+ // Start clustering in every chamber
for (Int_t icham = chamBeg; icham < chamEnd; icham++) {
for (Int_t iplan = planBeg; iplan < planEnd; iplan++) {
for (Int_t isect = sectBeg; isect < sectEnd; isect++) {
- if (trd->GetSensSector() >= 0) {
- Int_t sens1 = trd->GetSensSector();
- Int_t sens2 = sens1 + trd->GetSensSectorRange();
- sens2 -= ((Int_t) (sens2 / kNsect)) * kNsect;
- if (sens1 < sens2)
+ if (fTRD->GetSensSector() >= 0) {
+ Int_t sens1 = fTRD->GetSensSector();
+ Int_t sens2 = sens1 + fTRD->GetSensSectorRange();
+ sens2 -= ((Int_t) (sens2 / AliTRDgeometry::Nsect()))
+ * AliTRDgeometry::Nsect();
+ if (sens1 < sens2) {
if ((isect < sens1) || (isect >= sens2)) continue;
- else
+ }
+ else {
if ((isect < sens1) && (isect >= sens2)) continue;
+ }
}
Int_t idet = geo->GetDetector(iplan,icham,isect);
- Int_t nClusters = 0;
- printf("AliTRDclusterizerV1::MakeCluster -- ");
- printf("Analyzing chamber %d, plane %d, sector %d.\n"
- ,icham,iplan,isect);
+ Int_t nClusters = 0;
+ Int_t nClusters2pad = 0;
+ Int_t nClusters3pad = 0;
+ Int_t nClusters4pad = 0;
+ Int_t nClusters5pad = 0;
+ Int_t nClustersLarge = 0;
+
+ if (fVerbose > 0) {
+ printf("<AliTRDclusterizerV1::MakeCluster> ");
+ printf("Analyzing chamber %d, plane %d, sector %d.\n"
+ ,icham,iplan,isect);
+ }
- Int_t nRowMax = geo->GetRowMax(iplan,icham,isect);
- Int_t nColMax = geo->GetColMax(iplan);
- Int_t nTimeMax = geo->GetTimeMax();
+ Int_t nRowMax = fPar->GetRowMax(iplan,icham,isect);
+ Int_t nColMax = fPar->GetColMax(iplan);
+ Int_t nTimeBefore = fPar->GetTimeBefore();
+ Int_t nTimeTotal = fPar->GetTimeTotal();
- // Create a detector matrix to keep maxima
- AliTRDmatrix *digitMatrix = new AliTRDmatrix(nRowMax,nColMax,nTimeMax
- ,isect,icham,iplan);
- // Create a matrix to contain maximum flags
- AliTRDmatrix *maximaMatrix = new AliTRDmatrix(nRowMax,nColMax,nTimeMax
- ,isect,icham,iplan);
+ Float_t row0 = fPar->GetRow0(iplan,icham,isect);
+ Float_t col0 = fPar->GetCol0(iplan);
+ Float_t rowSize = fPar->GetRowPadSize(iplan,icham,isect);
+ Float_t colSize = fPar->GetColPadSize(iplan);
- // Read in the digits
+ // Get the digits
digits = fDigitsManager->GetDigits(idet);
-
- // Loop through the detector pixel
- for (time = 0; time < nTimeMax; time++) {
- for ( col = 0; col < nColMax; col++) {
- for ( row = 0; row < nRowMax; row++) {
-
- Int_t signal = digits->GetData(row,col,time);
- Int_t index = digits->GetIndex(row,col,time);
-
- // Fill the detector matrix
- if (signal > signalThresh) {
- // Store the signal amplitude
- digitMatrix->SetSignal(row,col,time,signal);
- // Store the digits number
- digitMatrix->AddTrack(row,col,time,index);
- }
-
- }
- }
- }
-
- // Loop chamber and find maxima in digitMatrix
- for ( row = 0; row < nRowMax; row++) {
- for ( col = 1; col < nColMax; col++) {
- for (time = 0; time < nTimeMax; time++) {
-
- if (digitMatrix->GetSignal(row,col,time)
- < digitMatrix->GetSignal(row,col - 1,time)) {
- // really maximum?
- if (col > 1) {
- if (digitMatrix->GetSignal(row,col - 2,time)
- < digitMatrix->GetSignal(row,col - 1,time)) {
- // yes, so set maximum flag
- maximaMatrix->SetSignal(row,col - 1,time,1);
- }
- else maximaMatrix->SetSignal(row,col - 1,time,0);
- }
- }
-
- } // time
- } // col
- } // row
-
- // now check maxima and calculate cluster position
- for ( row = 0; row < nRowMax; row++) {
- for ( col = 1; col < nColMax; col++) {
- for (time = 0; time < nTimeMax; time++) {
-
- if ((maximaMatrix->GetSignal(row,col,time) > 0)
- && (digitMatrix->GetSignal(row,col,time) > maxThresh)) {
-
- // Ratio resulting from unfolding
- Float_t ratio = 0;
- // Signals on max and neighbouring pads
- Float_t padSignal[kNsig] = {0};
- // Signals from cluster
- Float_t clusterSignal[kNclus] = {0};
- // Cluster pad info
- Float_t clusterPads[kNclus] = {0};
- // Cluster digit info
- Int_t clusterDigit[kNclus] = {0};
+ digits->Expand();
+ track0 = fDigitsManager->GetDictionary(idet,0);
+ track0->Expand();
+ track1 = fDigitsManager->GetDictionary(idet,1);
+ track1->Expand();
+ track2 = fDigitsManager->GetDictionary(idet,2);
+ track2->Expand();
+
+ // Loop through the chamber and find the maxima
+ for ( row = 0; row < nRowMax; row++) {
+ for ( col = 2; col < nColMax; col++) {
+ for (time = 0; time < nTimeTotal; time++) {
+
+ Int_t signalL = TMath::Abs(digits->GetDataUnchecked(row,col ,time));
+ Int_t signalM = TMath::Abs(digits->GetDataUnchecked(row,col-1,time));
+ Int_t signalR = TMath::Abs(digits->GetDataUnchecked(row,col-2,time));
+
+ // Look for the maximum
+ if (signalM >= maxThresh) {
+ if (((signalL >= sigThresh) &&
+ (signalL < signalM)) ||
+ ((signalR >= sigThresh) &&
+ (signalR < signalM))) {
+ // Maximum found, mark the position by a negative signal
+ digits->SetDataUnchecked(row,col-1,time,-signalM);
+ }
+ }
+
+ }
+ }
+ }
+
+ // Now check the maxima and calculate the cluster position
+ for ( row = 0; row < nRowMax ; row++) {
+ for (time = 0; time < nTimeTotal; time++) {
+ for ( col = 1; col < nColMax-1; col++) {
+
+ // Maximum found ?
+ if (digits->GetDataUnchecked(row,col,time) < 0) {
Int_t iPad;
for (iPad = 0; iPad < kNclus; iPad++) {
- clusterSignal[iPad] = digitMatrix->GetSignal(row,col-1+iPad,time);
- clusterDigit[iPad] = digitMatrix->GetTrack(row,col-1+iPad,time,0);
+ Int_t iPadCol = col - 1 + iPad;
+ clusterSignal[iPad] = TMath::Abs(digits->GetDataUnchecked(row
+ ,iPadCol
+ ,time));
+ clusterDigit[iPad] = digits->GetIndexUnchecked(row,iPadCol,time);
+ clusterTracks[3*iPad ] = track0->GetDataUnchecked(row,iPadCol,time) - 1;
+ clusterTracks[3*iPad+1] = track1->GetDataUnchecked(row,iPadCol,time) - 1;
+ clusterTracks[3*iPad+2] = track2->GetDataUnchecked(row,iPadCol,time) - 1;
}
- // neighbouring maximum on right side?
- if (col < nColMax - 2) {
- if (maximaMatrix->GetSignal(row,col + 2,time) > 0) {
-
- for (iPad = 0; iPad < 5; iPad++) {
- padSignal[iPad] = digitMatrix->GetSignal(row,col-1+iPad,time);
- }
-
- // unfold:
- ratio = Unfold(kEpsilon, padSignal);
-
- // set signal on overlapping pad to ratio
- clusterSignal[2] *= ratio;
-
- }
- }
-
- // Calculate the position of the cluster
- switch (clusteringMethod) {
- case 1:
- // method 1: simply center of mass
- clusterPads[0] = row + 0.5;
- clusterPads[1] = col - 0.5 + (clusterSignal[2] - clusterSignal[0]) /
- (clusterSignal[0] + clusterSignal[1] + clusterSignal[2]);
- clusterPads[2] = time + 0.5;
-
- nClusters++;
- break;
+ // Count the number of pads in the cluster
+ Int_t nPadCount = 0;
+ Int_t ii = 0;
+ while (TMath::Abs(digits->GetDataUnchecked(row,col-ii ,time))
+ >= sigThresh) {
+ nPadCount++;
+ ii++;
+ if (col-ii < 0) break;
+ }
+ ii = 0;
+ while (TMath::Abs(digits->GetDataUnchecked(row,col+ii+1,time))
+ >= sigThresh) {
+ nPadCount++;
+ ii++;
+ if (col+ii+1 >= nColMax) break;
+ }
+
+ nClusters++;
+ switch (nPadCount) {
case 2:
- // method 2: integral gauss fit on 3 pads
- TH1F *hPadCharges = new TH1F("hPadCharges", "Charges on center 3 pads"
- , 5, -1.5, 3.5);
- for (Int_t iCol = -1; iCol <= 3; iCol++) {
- if (clusterSignal[iCol] < 1) clusterSignal[iCol] = 1;
- hPadCharges->Fill(iCol, clusterSignal[iCol]);
+ iType = 0;
+ nClusters2pad++;
+ break;
+ case 3:
+ iType = 1;
+ nClusters3pad++;
+ break;
+ case 4:
+ iType = 2;
+ nClusters4pad++;
+ break;
+ case 5:
+ iType = 3;
+ nClusters5pad++;
+ break;
+ default:
+ iType = 4;
+ nClustersLarge++;
+ break;
+ };
+
+ // Don't analyze large clusters
+ //if (iType == 4) continue;
+
+ // Look for 5 pad cluster with minimum in the middle
+ Bool_t fivePadCluster = kFALSE;
+ if (col < nColMax-3) {
+ if (digits->GetDataUnchecked(row,col+2,time) < 0) {
+ fivePadCluster = kTRUE;
+ }
+ if ((fivePadCluster) && (col < nColMax-5)) {
+ if (digits->GetDataUnchecked(row,col+4,time) >= sigThresh) {
+ fivePadCluster = kFALSE;
+ }
+ }
+ if ((fivePadCluster) && (col > 1)) {
+ if (digits->GetDataUnchecked(row,col-2,time) >= sigThresh) {
+ fivePadCluster = kFALSE;
+ }
+ }
+ }
+
+ // 5 pad cluster
+ // Modify the signal of the overlapping pad for the left part
+ // of the cluster which remains from a previous unfolding
+ if (iUnfold) {
+ clusterSignal[0] *= ratioLeft;
+ iType = 3;
+ iUnfold = 0;
+ }
+
+ // Unfold the 5 pad cluster
+ if (fivePadCluster) {
+ for (iPad = 0; iPad < kNsig; iPad++) {
+ padSignal[iPad] = TMath::Abs(digits->GetDataUnchecked(row
+ ,col-1+iPad
+ ,time));
}
- hPadCharges->Fit("gaus", "IQ", "SAME", -0.5, 2.5);
- TF1 *fPadChargeFit = hPadCharges->GetFunction("gaus");
- Double_t colMean = fPadChargeFit->GetParameter(1);
-
- clusterPads[0] = row + 0.5;
- clusterPads[1] = col - 1.5 + colMean;
- clusterPads[2] = time + 0.5;
-
- delete hPadCharges;
+ // Unfold the two maxima and set the signal on
+ // the overlapping pad to the ratio
+ ratioRight = Unfold(kEpsilon,iplan,padSignal);
+ ratioLeft = 1.0 - ratioRight;
+ clusterSignal[2] *= ratioRight;
+ iType = 3;
+ iUnfold = 1;
+ }
- nClusters++;
- break;
+ Float_t clusterCharge = clusterSignal[0]
+ + clusterSignal[1]
+ + clusterSignal[2];
+
+ // The position of the cluster
+ clusterPads[0] = row + 0.5;
+ // Take the shift of the additional time bins into account
+ clusterPads[2] = time - nTimeBefore + 0.5;
+
+ if (fPar->LUTOn()) {
+
+ // Calculate the position of the cluster by using the
+ // lookup table method
+ clusterPads[1] = col + 0.5
+ + fPar->LUTposition(iplan,clusterSignal[0]
+ ,clusterSignal[1]
+ ,clusterSignal[2]);
+
+ }
+ else {
+
+ // Calculate the position of the cluster by using the
+ // center of gravity method
+ clusterPads[1] = col + 0.5
+ + (clusterSignal[2] - clusterSignal[0])
+ / clusterCharge;
+
+ }
+
+ Float_t q0 = clusterSignal[0];
+ Float_t q1 = clusterSignal[1];
+ Float_t q2 = clusterSignal[2];
+ Float_t clusterSigmaY2 = (q1*(q0+q2)+4*q0*q2) /
+ (clusterCharge*clusterCharge);
+
+ // Correct for ExB displacement
+ if (fPar->ExBOn()) {
+ Int_t local_time_bin = (Int_t) clusterPads[2];
+ Float_t driftLength = local_time_bin * timeBinSize + kAmWidth;
+ Float_t colSize = fPar->GetColPadSize(iplan);
+ Float_t deltaY = omegaTau*driftLength/colSize;
+ clusterPads[1] = clusterPads[1] - deltaY;
+ }
+
+ if (fVerbose > 1) {
+ printf("-----------------------------------------------------------\n");
+ printf("Create cluster no. %d\n",nClusters);
+ printf("Position: row = %f, col = %f, time = %f\n",clusterPads[0]
+ ,clusterPads[1]
+ ,clusterPads[2]);
+ printf("Indices: %d, %d, %d\n",clusterDigit[0]
+ ,clusterDigit[1]
+ ,clusterDigit[2]);
+ printf("Total charge = %f\n",clusterCharge);
+ printf("Tracks: pad0 %d, %d, %d\n",clusterTracks[0]
+ ,clusterTracks[1]
+ ,clusterTracks[2]);
+ printf(" pad1 %d, %d, %d\n",clusterTracks[3]
+ ,clusterTracks[4]
+ ,clusterTracks[5]);
+ printf(" pad2 %d, %d, %d\n",clusterTracks[6]
+ ,clusterTracks[7]
+ ,clusterTracks[8]);
+ printf("Type = %d, Number of pads = %d\n",iType,nPadCount);
}
- Float_t clusterCharge = clusterSignal[0]
- + clusterSignal[1]
- + clusterSignal[2];
+ // Calculate the position and the error
+ Float_t clusterPos[3];
+ clusterPos[0] = clusterPads[1] * colSize + col0;
+ clusterPos[1] = clusterPads[0] * rowSize + row0;
+ clusterPos[2] = clusterPads[2];
+ Float_t clusterSig[2];
+ clusterSig[0] = (clusterSigmaY2 + 1./12.) * colSize*colSize;
+ clusterSig[1] = rowSize * rowSize / 12.;
// Add the cluster to the output array
- trd->AddRecPoint(clusterPads,clusterDigit,idet,clusterCharge);
+ fTRD->AddCluster(clusterPos
+ ,idet
+ ,clusterCharge
+ ,clusterTracks
+ ,clusterSig
+ ,iType);
}
- } // time
- } // col
- } // row
-
- printf("AliTRDclusterizerV1::MakeCluster -- ");
- printf("Number of clusters found: %d\n",nClusters);
-
- delete digitMatrix;
- delete maximaMatrix;
-
- } // isect
- } // iplan
- } // icham
-
- printf("AliTRDclusterizerV1::MakeCluster -- ");
- printf("Total number of points found: %d\n"
- ,trd->RecPoints()->GetEntries());
+ }
+ }
+ }
+
+ // Compress the arrays
+ digits->Compress(1,0);
+ track0->Compress(1,0);
+ track1->Compress(1,0);
+ track2->Compress(1,0);
+
+ // Write the cluster and reset the array
+ WriteClusters(idet);
+ fTRD->ResetRecPoints();
+
+ if (fVerbose > 0) {
+ printf("<AliTRDclusterizerV1::MakeCluster> ");
+ printf("Found %d clusters in total.\n"
+ ,nClusters);
+ printf(" 2pad: %d\n",nClusters2pad);
+ printf(" 3pad: %d\n",nClusters3pad);
+ printf(" 4pad: %d\n",nClusters4pad);
+ printf(" 5pad: %d\n",nClusters5pad);
+ printf(" Large: %d\n",nClustersLarge);
+ }
- // Get the pointer to the cluster branch
- TTree *clusterTree = gAlice->TreeR();
+ }
+ }
+ }
- // Fill the cluster-branch
- printf("AliTRDclusterizerV1::MakeCluster -- ");
- printf("Fill the cluster tree.\n");
- clusterTree->Fill();
- printf("AliTRDclusterizerV1::MakeCluster -- ");
- printf("Done.\n");
+ if (fVerbose > 0) {
+ printf("<AliTRDclusterizerV1::MakeCluster> ");
+ printf("Done.\n");
+ }
return kTRUE;
}
//_____________________________________________________________________________
-Float_t AliTRDclusterizerV1::Unfold(Float_t eps, Float_t* padSignal)
+Float_t AliTRDclusterizerV1::Unfold(Float_t eps, Int_t plane, Float_t* padSignal)
{
//
// Method to unfold neighbouring maxima.
// The resulting ratio is then returned to the calling method.
//
- Int_t itStep = 0; // count iteration steps
+ Int_t irc = 0;
+ Int_t itStep = 0; // Count iteration steps
- Float_t ratio = 0.5; // start value for ratio
- Float_t prevRatio = 0; // store previous ratio
+ Float_t ratio = 0.5; // Start value for ratio
+ Float_t prevRatio = 0; // Store previous ratio
- Float_t newLeftSignal[3] = {0}; // array to store left cluster signal
- Float_t newRightSignal[3] = {0}; // array to store right cluster signal
+ Float_t newLeftSignal[3] = {0}; // Array to store left cluster signal
+ Float_t newRightSignal[3] = {0}; // Array to store right cluster signal
+ Float_t newSignal[3] = {0};
- // start iteration:
+ // Start the iteration
while ((TMath::Abs(prevRatio - ratio) > eps) && (itStep < 10)) {
itStep++;
prevRatio = ratio;
- // cluster position according to charge ratio
- Float_t maxLeft = (ratio*padSignal[2] - padSignal[0]) /
- (padSignal[0] + padSignal[1] + ratio*padSignal[2]);
- Float_t maxRight = (padSignal[4] - (1-ratio)*padSignal[2]) /
- ((1-ratio)*padSignal[2] + padSignal[3] + padSignal[4]);
+ // Cluster position according to charge ratio
+ Float_t maxLeft = (ratio*padSignal[2] - padSignal[0])
+ / (padSignal[0] + padSignal[1] + ratio*padSignal[2]);
+ Float_t maxRight = (padSignal[4] - (1-ratio)*padSignal[2])
+ / ((1-ratio)*padSignal[2] + padSignal[3] + padSignal[4]);
- // set cluster charge ratio
- Float_t ampLeft = padSignal[1];
- Float_t ampRight = padSignal[3];
+ // Set cluster charge ratio
+ irc = fPar->PadResponse(1.0,maxLeft ,plane,newSignal);
+ Float_t ampLeft = padSignal[1] / newSignal[1];
+ irc = fPar->PadResponse(1.0,maxRight,plane,newSignal);
+ Float_t ampRight = padSignal[3] / newSignal[1];
- // apply pad response to parameters
- newLeftSignal[0] = ampLeft*PadResponse(-1 - maxLeft);
- newLeftSignal[1] = ampLeft*PadResponse( 0 - maxLeft);
- newLeftSignal[2] = ampLeft*PadResponse( 1 - maxLeft);
+ // Apply pad response to parameters
+ irc = fPar->PadResponse(ampLeft ,maxLeft ,plane,newLeftSignal );
+ irc = fPar->PadResponse(ampRight,maxRight,plane,newRightSignal);
- newRightSignal[0] = ampRight*PadResponse(-1 - maxRight);
- newRightSignal[1] = ampRight*PadResponse( 0 - maxRight);
- newRightSignal[2] = ampRight*PadResponse( 1 - maxRight);
-
- // calculate new overlapping ratio
- ratio = newLeftSignal[2]/(newLeftSignal[2] + newRightSignal[0]);
+ // Calculate new overlapping ratio
+ ratio = TMath::Min((Float_t)1.0,newLeftSignal[2] /
+ (newLeftSignal[2] + newRightSignal[0]));
}
}
-//_____________________________________________________________________________
-Float_t AliTRDclusterizerV1::PadResponse(Float_t x)
-{
- //
- // The pad response for the chevron pads.
- // We use a simple Gaussian approximation which should be good
- // enough for our purpose.
- //
-
- // The parameters for the response function
- const Float_t kA = 0.8872;
- const Float_t kB = -0.00573;
- const Float_t kC = 0.454;
- const Float_t kC2 = kC*kC;
-
- Float_t pr = kA * (kB + TMath::Exp(-x*x / (2. * kC2)));
-
- return (pr);
-
-}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff