+
/**************************************************************************
* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
* *
* provided "as is" without express or implied warranty. *
**************************************************************************/
-/*
-$Log$
-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
-
-Revision 1.3 2000/05/08 16:17:27 cblume
-Merge TRD-develop
-
-Revision 1.1.4.1 2000/05/08 15:09:01 cblume
-Introduce AliTRDdigitsManager
-
-Revision 1.1 2000/02/28 18:58:54 cblume
-Add new TRD classes
-
-*/
+/* $Id$ */
///////////////////////////////////////////////////////////////////////////////
// //
-// TRD cluster finder for the slow simulator.
+// TRD cluster finder //
// //
///////////////////////////////////////////////////////////////////////////////
#include <TH1.h>
#include <TFile.h>
-#include "AliRun.h"
+#include "AliRunLoader.h"
+#include "AliLoader.h"
+#include "AliRawReader.h"
+#include "AliLog.h"
+#include "AliAlignObj.h"
-#include "AliTRD.h"
#include "AliTRDclusterizerV1.h"
-#include "AliTRDmatrix.h"
#include "AliTRDgeometry.h"
-#include "AliTRDdigitizer.h"
#include "AliTRDdataArrayF.h"
#include "AliTRDdataArrayI.h"
#include "AliTRDdigitsManager.h"
+#include "AliTRDpadPlane.h"
+#include "AliTRDrawData.h"
+#include "AliTRDcalibDB.h"
+#include "AliTRDSimParam.h"
+#include "AliTRDRecParam.h"
+#include "AliTRDcluster.h"
+
+#include "Cal/AliTRDCalROC.h"
+#include "Cal/AliTRDCalDet.h"
ClassImp(AliTRDclusterizerV1)
//_____________________________________________________________________________
-AliTRDclusterizerV1::AliTRDclusterizerV1():AliTRDclusterizer()
+AliTRDclusterizerV1::AliTRDclusterizerV1()
+ :AliTRDclusterizer()
+ ,fDigitsManager(NULL)
{
//
// AliTRDclusterizerV1 default constructor
//
- fDigitsManager = NULL;
-
- fClusMaxThresh = 0;
- fClusSigThresh = 0;
-
- fUseLUT = kFALSE;
-
}
//_____________________________________________________________________________
-AliTRDclusterizerV1::AliTRDclusterizerV1(const Text_t* name, const Text_t* title)
- :AliTRDclusterizer(name,title)
+AliTRDclusterizerV1::AliTRDclusterizerV1(const Text_t *name, const Text_t *title)
+ :AliTRDclusterizer(name,title)
+ ,fDigitsManager(new AliTRDdigitsManager())
{
//
- // AliTRDclusterizerV1 default constructor
+ // AliTRDclusterizerV1 constructor
//
- fDigitsManager = new AliTRDdigitsManager();
-
- Init();
+ fDigitsManager->CreateArrays();
}
//_____________________________________________________________________________
AliTRDclusterizerV1::AliTRDclusterizerV1(const AliTRDclusterizerV1 &c)
+ :AliTRDclusterizer(c)
+ ,fDigitsManager(NULL)
{
//
// AliTRDclusterizerV1 copy constructor
//
- ((AliTRDclusterizerV1 &) c).Copy(*this);
-
}
//_____________________________________________________________________________
}
//_____________________________________________________________________________
-void AliTRDclusterizerV1::Copy(TObject &c)
+void AliTRDclusterizerV1::Copy(TObject &c) const
{
//
// Copy function
//
- ((AliTRDclusterizerV1 &) c).fUseLUT = fUseLUT;
- ((AliTRDclusterizerV1 &) c).fClusMaxThresh = fClusMaxThresh;
- ((AliTRDclusterizerV1 &) c).fClusSigThresh = fClusSigThresh;
- ((AliTRDclusterizerV1 &) c).fDigitsManager = NULL;
- for (Int_t ilut = 0; ilut < kNlut; ilut++) {
- ((AliTRDclusterizerV1 &) c).fLUT[ilut] = fLUT[ilut];
- }
+ ((AliTRDclusterizerV1 &) c).fDigitsManager = 0;
AliTRDclusterizer::Copy(c);
}
//_____________________________________________________________________________
-void AliTRDclusterizerV1::Init()
+Bool_t AliTRDclusterizerV1::ReadDigits()
{
//
- // Initializes the cluster finder
+ // Reads the digits arrays from the input aliroot file
//
- // The default parameter for the clustering
- fClusMaxThresh = 3;
- fClusSigThresh = 1;
-
- // Use the lookup table for the position determination
- fUseLUT = kTRUE;
-
- // The lookup table from Bogdan
- Float_t lut[128] = {
- 0.0068, 0.0198, 0.0318, 0.0432, 0.0538, 0.0642, 0.0742, 0.0838,
- 0.0932, 0.1023, 0.1107, 0.1187, 0.1268, 0.1347, 0.1423, 0.1493,
- 0.1562, 0.1632, 0.1698, 0.1762, 0.1828, 0.1887, 0.1947, 0.2002,
- 0.2062, 0.2118, 0.2173, 0.2222, 0.2278, 0.2327, 0.2377, 0.2428,
- 0.2473, 0.2522, 0.2567, 0.2612, 0.2657, 0.2697, 0.2743, 0.2783,
- 0.2822, 0.2862, 0.2903, 0.2943, 0.2982, 0.3018, 0.3058, 0.3092,
- 0.3128, 0.3167, 0.3203, 0.3237, 0.3268, 0.3302, 0.3338, 0.3368,
- 0.3402, 0.3433, 0.3462, 0.3492, 0.3528, 0.3557, 0.3587, 0.3613,
- 0.3643, 0.3672, 0.3702, 0.3728, 0.3758, 0.3783, 0.3812, 0.3837,
- 0.3862, 0.3887, 0.3918, 0.3943, 0.3968, 0.3993, 0.4017, 0.4042,
- 0.4067, 0.4087, 0.4112, 0.4137, 0.4157, 0.4182, 0.4207, 0.4227,
- 0.4252, 0.4272, 0.4293, 0.4317, 0.4338, 0.4358, 0.4383, 0.4403,
- 0.4423, 0.4442, 0.4462, 0.4482, 0.4502, 0.4523, 0.4543, 0.4563,
- 0.4582, 0.4602, 0.4622, 0.4638, 0.4658, 0.4678, 0.4697, 0.4712,
- 0.4733, 0.4753, 0.4767, 0.4787, 0.4803, 0.4823, 0.4837, 0.4857,
- 0.4873, 0.4888, 0.4908, 0.4922, 0.4942, 0.4958, 0.4972, 0.4988
- };
- for (Int_t ilut = 0; ilut < kNlut; ilut++) {
- fLUT[ilut] = lut[ilut];
+ if (!fRunLoader) {
+ AliError("No run loader available");
+ return kFALSE;
}
- fDigitsManager->CreateArrays();
+ AliLoader* loader = fRunLoader->GetLoader("TRDLoader");
+ if (!loader->TreeD()) {
+ loader->LoadDigits();
+ }
+
+ // Read in the digit arrays
+ return (fDigitsManager->ReadDigits(loader->TreeD()));
}
//_____________________________________________________________________________
-Bool_t AliTRDclusterizerV1::ReadDigits()
+Bool_t AliTRDclusterizerV1::ReadDigits(TTree *digitsTree)
{
//
- // Reads the digits arrays from the input aliroot file
+ // Reads the digits arrays from the input tree
//
- if (!fInputFile) {
- printf("AliTRDclusterizerV1::ReadDigits -- ");
- printf("No input file open\n");
- return kFALSE;
- }
-
- fDigitsManager->Open(fInputFile->GetName());
-
// Read in the digit arrays
- return (fDigitsManager->ReadDigits());
+ return (fDigitsManager->ReadDigits(digitsTree));
}
//_____________________________________________________________________________
-Bool_t AliTRDclusterizerV1::MakeClusters()
+Bool_t AliTRDclusterizerV1::ReadDigits(AliRawReader *rawReader)
{
//
- // Generates the cluster.
+ // Reads the digits arrays from the ddl file
//
- Int_t row, col, time;
-
- if (fTRD->IsVersion() != 1) {
- printf("AliTRDclusterizerV1::MakeCluster -- ");
- printf("TRD must be version 1 (slow simulator).\n");
- return kFALSE;
- }
+ AliTRDrawData raw;
+ fDigitsManager = raw.Raw2Digits(rawReader);
- // Get the geometry
- AliTRDgeometry *geo = fTRD->GetGeometry();
+ return kTRUE;
- Float_t timeBinSize = geo->GetTimeBinSize();
- // Half of ampl.region
- const Float_t kAmWidth = AliTRDgeometry::AmThick()/2.;
+}
- AliTRDdigitizer *digitizer = (AliTRDdigitizer*) fInputFile->Get("TRDdigitizer");
- Float_t omegaTau = digitizer->GetOmegaTau();
- if (fVerbose > 0) {
- printf("AliTRDclusterizerV1::MakeCluster -- ");
- printf("OmegaTau = %f \n",omegaTau);
- printf("AliTRDclusterizerV1::MakeCluster -- ");
- printf("Start creating clusters.\n");
- }
+//_____________________________________________________________________________
+Bool_t AliTRDclusterizerV1::MakeClusters()
+{
+ //
+ // Generates the cluster.
+ //
- AliTRDdataArrayI *digits;
- AliTRDdataArrayI *track0;
- AliTRDdataArrayI *track1;
- AliTRDdataArrayI *track2;
+ Int_t row = 0;
+ Int_t col = 0;
+ Int_t time = 0;
+ Int_t icham = 0;
+ Int_t iplan = 0;
+ Int_t isect = 0;
+ Int_t iPad = 0;
+
+ AliTRDdataArrayI *digitsIn;
+ AliTRDdataArrayI *tracksIn;
+
+ AliTRDgeometry geo;
+
+ AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
+ if (!calibration) {
+ AliFatal("No AliTRDcalibDB instance available\n");
+ return kFALSE;
+ }
+
+ AliTRDSimParam *simParam = AliTRDSimParam::Instance();
+ if (!simParam) {
+ AliError("No AliTRDSimParam instance available\n");
+ return kFALSE;
+ }
+
+ AliTRDRecParam *recParam = AliTRDRecParam::Instance();
+ if (!recParam) {
+ AliError("No AliTRDRecParam instance available\n");
+ return kFALSE;
+ }
+ // ADC thresholds
+ Float_t ADCthreshold = simParam->GetADCthreshold();
// Threshold value for the maximum
- Int_t maxThresh = fClusMaxThresh;
+ Float_t maxThresh = recParam->GetClusMaxThresh();
// Threshold value for the digit signal
- Int_t sigThresh = fClusSigThresh;
+ Float_t sigThresh = recParam->GetClusSigThresh();
+
+ // Detector wise calibration object for t0
+ const AliTRDCalDet *calT0Det = calibration->GetT0Det();
+ // Detector wise calibration object for the gain factors
+ const AliTRDCalDet *calGainFactorDet = calibration->GetGainFactorDet();
// 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;
+ const Int_t kNdict = AliTRDdigitsManager::kNDict;
+ const Int_t kNtrack = kNdict * kNclus;
- // For the LUT
- const Float_t kLUTmin = 0.106113;
- const Float_t kLUTmax = 0.995415;
+ Int_t iUnfold = 0;
+ Double_t ratioLeft = 1.0;
+ Double_t ratioRight = 1.0;
- Int_t iType = 0;
- Int_t iUnfold = 0;
+ Int_t iClusterROC = 0;
- Float_t ratioLeft = 1.0;
- Float_t ratioRight = 1.0;
+ Double_t padSignal[kNsig];
+ Double_t clusterSignal[kNclus];
+ Double_t clusterPads[kNclus];
- 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 = AliTRDgeometry::Ncham();
+ Int_t planBeg = 0;
+ Int_t planEnd = AliTRDgeometry::Nplan();
+ Int_t sectBeg = 0;
+ Int_t sectEnd = AliTRDgeometry::Nsect();
+ Int_t nTimeTotal = calibration->GetNumberOfTimeBins();
- Int_t chamBeg = 0;
- Int_t chamEnd = AliTRDgeometry::Ncham();
- if (fTRD->GetSensChamber() >= 0) {
- chamBeg = fTRD->GetSensChamber();
- chamEnd = chamBeg + 1;
- }
- Int_t planBeg = 0;
- Int_t planEnd = AliTRDgeometry::Nplan();
- if (fTRD->GetSensPlane() >= 0) {
- planBeg = fTRD->GetSensPlane();
- planEnd = planBeg + 1;
- }
- Int_t sectBeg = 0;
- Int_t sectEnd = AliTRDgeometry::Nsect();
+ AliDebug(1,Form("Number of Time Bins = %d.\n",nTimeTotal));
// 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 (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 {
- if ((isect < sens1) && (isect >= sens2)) continue;
- }
+ for (icham = chamBeg; icham < chamEnd; icham++) {
+ for (iplan = planBeg; iplan < planEnd; iplan++) {
+ for (isect = sectBeg; isect < sectEnd; isect++) {
+
+ Int_t idet = geo.GetDetector(iplan,icham,isect);
+ Int_t ilayer = AliGeomManager::kTRD1 + iplan;
+ Int_t imodule = icham + chamEnd * isect;
+ UShort_t volid = AliGeomManager::LayerToVolUID(ilayer,imodule);
+
+ // Get the digits
+ digitsIn = fDigitsManager->GetDigits(idet);
+ // This is to take care of switched off super modules
+ if (digitsIn->GetNtime() == 0) {
+ continue;
}
+ digitsIn->Expand();
+ AliTRDdataArrayI *tracksTmp = fDigitsManager->GetDictionary(idet,0);
+ tracksTmp->Expand();
+
+ Int_t nRowMax = geo.GetRowMax(iplan,icham,isect);
+ Int_t nColMax = geo.GetColMax(iplan);
+
+ AliTRDpadPlane *padPlane = geo.GetPadPlane(iplan,icham);
- Int_t idet = geo->GetDetector(iplan,icham,isect);
+ // Calibration object with pad wise values for t0
+ AliTRDCalROC *calT0ROC = calibration->GetT0ROC(idet);
+ // Calibration object with pad wise values for the gain factors
+ AliTRDCalROC *calGainFactorROC = calibration->GetGainFactorROC(idet);
+ // Calibration value for chamber wise t0
+ Float_t calT0DetValue = calT0Det->GetValue(idet);
+ // Calibration value for chamber wise gain factor
+ Float_t calGainFactorDetValue = calGainFactorDet->GetValue(idet);
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 nTimeBefore = geo->GetTimeBefore();
- Int_t nTimeTotal = geo->GetTimeTotal();
+ // Apply the gain and the tail cancelation via digital filter
+ AliTRDdataArrayF *digitsOut = new AliTRDdataArrayF(digitsIn->GetNrow()
+ ,digitsIn->GetNcol()
+ ,digitsIn->GetNtime());
+ Transform(digitsIn
+ ,digitsOut
+ ,nRowMax,nColMax,nTimeTotal
+ ,ADCthreshold
+ ,calGainFactorROC
+ ,calGainFactorDetValue);
- // Get the digits
- digits = fDigitsManager->GetDigits(idet);
- digits->Expand();
- track0 = fDigitsManager->GetDictionary(idet,0);
- track0->Expand();
- track1 = fDigitsManager->GetDictionary(idet,1);
- track1->Expand();
- track2 = fDigitsManager->GetDictionary(idet,2);
- track2->Expand();
+ // Input digits are not needed any more
+ digitsIn->Compress(1,0);
// Loop through the chamber and find the maxima
for ( row = 0; row < nRowMax; row++) {
- for ( col = 2; col < nColMax; col++) {
+ 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));
+ Float_t signalM = TMath::Abs(digitsOut->GetDataUnchecked(row,col-1,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);
+
+ Float_t signalL = TMath::Abs(digitsOut->GetDataUnchecked(row,col ,time));
+ Float_t signalR = TMath::Abs(digitsOut->GetDataUnchecked(row,col-2,time));
+
+ if ((TMath::Abs(signalL) <= signalM) &&
+ (TMath::Abs(signalR) < signalM)) {
+ if ((TMath::Abs(signalL) >= sigThresh) ||
+ (TMath::Abs(signalR) >= sigThresh)) {
+ // Maximum found, mark the position by a negative signal
+ digitsOut->SetDataUnchecked(row,col-1,time,-signalM);
+ }
}
+
}
- }
- }
- }
+ }
+ }
+ }
+ tracksTmp->Compress(1,0);
+
+ // The index to the first cluster of a given ROC
+ Int_t firstClusterROC = -1;
+ // The number of cluster in a given ROC
+ Int_t nClusterROC = 0;
// Now check the maxima and calculate the cluster position
for ( row = 0; row < nRowMax ; row++) {
for ( col = 1; col < nColMax-1; col++) {
// Maximum found ?
- if (digits->GetDataUnchecked(row,col,time) < 0) {
+ if (digitsOut->GetDataUnchecked(row,col,time) < 0.0) {
- Int_t iPad;
for (iPad = 0; iPad < kNclus; iPad++) {
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;
+ clusterSignal[iPad] =
+ TMath::Abs(digitsOut->GetDataUnchecked(row,iPadCol,time));
}
// 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) {
+ Int_t ii;
+ // Look to the left
+ ii = 0;
+ while (TMath::Abs(digitsOut->GetDataUnchecked(row,col-ii ,time)) >= sigThresh) {
nPadCount++;
ii++;
if (col-ii < 0) break;
}
+ // Look to the right
ii = 0;
- while (TMath::Abs(digits->GetDataUnchecked(row,col+ii+1,time))
- >= sigThresh) {
+ while (TMath::Abs(digitsOut->GetDataUnchecked(row,col+ii+1,time)) >= sigThresh) {
nPadCount++;
ii++;
if (col+ii+1 >= nColMax) break;
}
-
nClusters++;
- switch (nPadCount) {
- case 2:
- 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
+
+ // 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) {
+ if (col < (nColMax - 3)) {
+ if (digitsOut->GetDataUnchecked(row,col+2,time) < 0) {
fivePadCluster = kTRUE;
}
- if ((fivePadCluster) && (col < nColMax-5)) {
- if (digits->GetDataUnchecked(row,col+4,time) >= sigThresh) {
+ if ((fivePadCluster) && (col < (nColMax - 5))) {
+ if (digitsOut->GetDataUnchecked(row,col+4,time) >= sigThresh) {
fivePadCluster = kFALSE;
}
}
- if ((fivePadCluster) && (col > 1)) {
- if (digits->GetDataUnchecked(row,col-2,time) >= sigThresh) {
+ if ((fivePadCluster) && (col > 1)) {
+ if (digitsOut->GetDataUnchecked(row,col-2,time) >= sigThresh) {
fivePadCluster = kFALSE;
}
}
// 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));
+ padSignal[iPad] = TMath::Abs(digitsOut->GetDataUnchecked(row
+ ,col-1+iPad
+ ,time));
}
// Unfold the two maxima and set the signal on
// the overlapping pad to the ratio
- ratioRight = Unfold(kEpsilon,padSignal);
+ ratioRight = Unfold(kEpsilon,iplan,padSignal);
ratioLeft = 1.0 - ratioRight;
clusterSignal[2] *= ratioRight;
- iType = 3;
iUnfold = 1;
}
- Float_t clusterCharge = clusterSignal[0]
- + clusterSignal[1]
- + clusterSignal[2];
+ Double_t clusterCharge = clusterSignal[0]
+ + clusterSignal[1]
+ + clusterSignal[2];
// The position of the cluster
- clusterPads[0] = row + 0.5;
+ clusterPads[0] = row + 0.5;
// Take the shift of the additional time bins into account
- clusterPads[2] = time - nTimeBefore + 0.5;
-
- if (fUseLUT) {
+ clusterPads[2] = time + 0.5;
+ if (recParam->LUTOn()) {
// Calculate the position of the cluster by using the
// lookup table method
- Float_t ratioLUT;
- Float_t signLUT;
- Float_t lut = 0.0;
- if (clusterSignal[0] > clusterSignal[2]) {
- ratioLUT = clusterSignal[0] / clusterSignal[1];
- signLUT = -1.0;
- }
- else {
- ratioLUT = clusterSignal[2] / clusterSignal[1];
- signLUT = 1.0;
- }
- if (ratioLUT < kLUTmin) {
- lut = 0.0;
+ clusterPads[1] = recParam->LUTposition(iplan,clusterSignal[0]
+ ,clusterSignal[1]
+ ,clusterSignal[2]);
+ }
+ else {
+ // Calculate the position of the cluster by using the
+ // center of gravity method
+ for (Int_t i = 0; i < kNsig; i++) {
+ padSignal[i] = 0.0;
}
- else if (ratioLUT > kLUTmax) {
- lut = 0.5;
+ padSignal[2] = TMath::Abs(digitsOut->GetDataUnchecked(row,col ,time)); // Central pad
+ padSignal[1] = TMath::Abs(digitsOut->GetDataUnchecked(row,col-1,time)); // Left pad
+ padSignal[3] = TMath::Abs(digitsOut->GetDataUnchecked(row,col+1,time)); // Right pad
+ if ((col > 2) &&
+ (TMath::Abs(digitsOut->GetDataUnchecked(row,col-2,time)) < padSignal[1])) {
+ padSignal[0] = TMath::Abs(digitsOut->GetDataUnchecked(row,col-2,time));
}
- else {
- Int_t indexLUT = TMath::Nint ((kNlut-1) * (ratioLUT - kLUTmin)
- / (kLUTmax - kLUTmin));
- lut = fLUT[indexLUT];
+ if ((col < nColMax - 3) &&
+ (TMath::Abs(digitsOut->GetDataUnchecked(row,col+2,time)) < padSignal[3])) {
+ padSignal[4] = TMath::Abs(digitsOut->GetDataUnchecked(row,col+2,time));
+ }
+ clusterPads[1] = GetCOG(padSignal);
+ }
+
+ Double_t q0 = clusterSignal[0];
+ Double_t q1 = clusterSignal[1];
+ Double_t q2 = clusterSignal[2];
+ Double_t clusterSigmaY2 = (q1 * (q0 + q2) + 4.0 * q0 * q2)
+ / (clusterCharge*clusterCharge);
+
+ //
+ // Calculate the position and the error
+ //
+
+ // Correct for t0 (sum of chamber and pad wise values !!!)
+ Float_t calT0ROCValue = calT0ROC->GetValue(col,row);
+ Char_t clusterTimeBin = ((Char_t) TMath::Nint(time - (calT0DetValue + calT0ROCValue)));
+ Double_t colSize = padPlane->GetColSize(col);
+ Double_t rowSize = padPlane->GetRowSize(row);
+
+ Float_t clusterPos[3];
+ clusterPos[0] = padPlane->GetColPos(col) - (clusterPads[1] + 0.5) * colSize;
+ clusterPos[1] = padPlane->GetRowPos(row) - 0.5 * rowSize;
+ clusterPos[2] = CalcXposFromTimebin(clusterPads[2],idet,col,row);
+ Float_t clusterSig[2];
+ clusterSig[0] = (clusterSigmaY2 + 1.0/12.0) * colSize*colSize;
+ clusterSig[1] = rowSize * rowSize / 12.0;
+
+ // Store the amplitudes of the pads in the cluster for later analysis
+ Short_t signals[7] = { 0, 0, 0, 0, 0, 0, 0 };
+ for (Int_t jPad = col-3; jPad <= col+3; jPad++) {
+ if ((jPad < 0) ||
+ (jPad >= nColMax-1)) {
+ continue;
}
- clusterPads[1] = col + 0.5 + signLUT * lut;
+ signals[jPad-col+3] = TMath::Nint(TMath::Abs(digitsOut->GetDataUnchecked(row,jPad,time)));
+ }
+ // Add the cluster to the output array
+ // The track indices will be stored later
+ AliTRDcluster *cluster = new AliTRDcluster(idet
+ ,clusterCharge
+ ,clusterPos
+ ,clusterSig
+ ,0x0
+ ,((Char_t) nPadCount)
+ ,signals
+ ,((UChar_t) col)
+ ,clusterTimeBin
+ ,clusterPads[1]
+ ,volid);
+ // Temporarily store the row, column and time bin of the center pad
+ // Used to later on assign the track indices
+ cluster->SetLabel( row,0);
+ cluster->SetLabel( col,1);
+ cluster->SetLabel(time,2);
+ RecPoints()->Add(cluster);
+
+ // Store the index of the first cluster in the current ROC
+ if (firstClusterROC < 0) {
+ firstClusterROC = RecPoints()->GetEntriesFast() - 1;
}
- else {
+ // Count the number of cluster in the current ROC
+ nClusterROC++;
- // Calculate the position of the cluster by using the
- // center of gravity method
- clusterPads[1] = col + 0.5
- + (clusterSignal[2] - clusterSignal[0])
- / clusterCharge;
+ } // if: Maximum found ?
- }
+ } // loop: pad columns
+ } // loop: time bins
+ } // loop: pad rows
- Float_t clusterSigmaY2 = (clusterSignal[2] + clusterSignal[0]) / clusterCharge
- - (clusterPads[1]-col-0.5) * (clusterPads[1]-col-0.5);
+ delete digitsOut;
- // Correct for ExB displacement
- if (digitizer->GetExB()) {
- Int_t local_time_bin = (Int_t) clusterPads[2];
- Float_t driftLength = local_time_bin * timeBinSize + kAmWidth;
- Float_t colSize = geo->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);
- }
+ //
+ // Add the track indices to the found clusters
+ //
- // Add the cluster to the output array
- fTRD->AddCluster(clusterPads
- ,clusterDigit
- ,idet
- ,clusterCharge
- ,clusterTracks
- ,clusterSigmaY2
- ,iType);
-
- }
- }
- }
- }
-
- // Compress the arrays
- digits->Compress(1,0);
- track0->Compress(1,0);
- track1->Compress(1,0);
- track2->Compress(1,0);
+ // Temporary array to collect the track indices
+ Int_t *idxTracks = new Int_t[kNtrack*nClusterROC];
+
+ // Loop through the dictionary arrays one-by-one
+ // to keep memory consumption low
+ for (Int_t iDict = 0; iDict < kNdict; iDict++) {
+
+ tracksIn = fDigitsManager->GetDictionary(idet,iDict);
+ tracksIn->Expand();
+
+ // Loop though the clusters found in this ROC
+ for (iClusterROC = 0; iClusterROC < nClusterROC; iClusterROC++) {
+
+ AliTRDcluster *cluster = (AliTRDcluster *)
+ RecPoints()->UncheckedAt(firstClusterROC+iClusterROC);
+ row = cluster->GetLabel(0);
+ col = cluster->GetLabel(1);
+ time = cluster->GetLabel(2);
+
+ for (iPad = 0; iPad < kNclus; iPad++) {
+ Int_t iPadCol = col - 1 + iPad;
+ Int_t index = tracksIn->GetDataUnchecked(row,iPadCol,time) - 1;
+ idxTracks[3*iPad+iDict + iClusterROC*kNtrack] = index;
+ }
+
+ }
+
+ // Compress the arrays
+ tracksIn->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);
}
- }
- }
- }
+ // Copy the track indices into the cluster
+ // Loop though the clusters found in this ROC
+ for (iClusterROC = 0; iClusterROC < nClusterROC; iClusterROC++) {
+
+ AliTRDcluster *cluster = (AliTRDcluster *)
+ RecPoints()->UncheckedAt(firstClusterROC+iClusterROC);
+ cluster->SetLabel(-9999,0);
+ cluster->SetLabel(-9999,1);
+ cluster->SetLabel(-9999,2);
+
+ cluster->AddTrackIndex(&idxTracks[iClusterROC*kNtrack]);
+
+ }
- if (fVerbose > 0) {
- printf("AliTRDclusterizerV1::MakeCluster -- ");
- printf("Done.\n");
- }
+ delete [] idxTracks;
+
+ // Write the cluster and reset the array
+ WriteClusters(idet);
+ ResetRecPoints();
+
+ } // loop: Sectors
+ } // loop: Planes
+ } // loop: Chambers
return kTRUE;
}
//_____________________________________________________________________________
-Float_t AliTRDclusterizerV1::Unfold(Float_t eps, Float_t* padSignal)
+Double_t AliTRDclusterizerV1::GetCOG(Double_t signal[5])
+{
+ //
+ // Get COG position
+ // Used for clusters with more than 3 pads - where LUT not applicable
+ //
+
+ Double_t sum = signal[0]
+ + signal[1]
+ + signal[2]
+ + signal[3]
+ + signal[4];
+
+ Double_t res = (0.0 * (-signal[0] + signal[4])
+ + (-signal[1] + signal[3])) / sum;
+
+ return res;
+
+}
+
+//_____________________________________________________________________________
+Double_t AliTRDclusterizerV1::Unfold(Double_t eps, Int_t plane, Double_t *padSignal)
{
//
// Method to unfold neighbouring maxima.
// The resulting ratio is then returned to the calling method.
//
- Int_t itStep = 0; // Count iteration steps
+ AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
+ if (!calibration) {
+ AliError("No AliTRDcalibDB instance available\n");
+ return kFALSE;
+ }
+
+ 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
+ Double_t ratio = 0.5; // Start value for ratio
+ Double_t prevRatio = 0.0; // 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
+ Double_t newLeftSignal[3] = { 0.0, 0.0, 0.0 }; // Array to store left cluster signal
+ Double_t newRightSignal[3] = { 0.0, 0.0, 0.0 }; // Array to store right cluster signal
+ Double_t newSignal[3] = { 0.0, 0.0, 0.0 };
// Start the iteration
while ((TMath::Abs(prevRatio - ratio) > eps) && (itStep < 10)) {
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]);
+ Double_t maxLeft = (ratio*padSignal[2] - padSignal[0])
+ / (padSignal[0] + padSignal[1] + ratio*padSignal[2]);
+ Double_t maxRight = (padSignal[4] - (1-ratio)*padSignal[2])
+ / ((1.0 - ratio)*padSignal[2] + padSignal[3] + padSignal[4]);
// Set cluster charge ratio
- Float_t ampLeft = padSignal[1] / PadResponse(0 - maxLeft );
- Float_t ampRight = padSignal[3] / PadResponse(0 - maxRight);
+ irc = calibration->PadResponse(1.0,maxLeft ,plane,newSignal);
+ Double_t ampLeft = padSignal[1] / newSignal[1];
+ irc = calibration->PadResponse(1.0,maxRight,plane,newSignal);
+ Double_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);
-
- newRightSignal[0] = ampRight * PadResponse(-1 - maxRight);
- newRightSignal[1] = ampRight * PadResponse( 0 - maxRight);
- newRightSignal[2] = ampRight * PadResponse( 1 - maxRight);
+ irc = calibration->PadResponse(ampLeft ,maxLeft ,plane,newLeftSignal );
+ irc = calibration->PadResponse(ampRight,maxRight,plane,newRightSignal);
// Calculate new overlapping ratio
- ratio = TMath::Min((Float_t)1.0,newLeftSignal[2] /
- (newLeftSignal[2] + newRightSignal[0]));
+ ratio = TMath::Min((Double_t)1.0,newLeftSignal[2] /
+ (newLeftSignal[2] + newRightSignal[0]));
}
}
//_____________________________________________________________________________
-Float_t AliTRDclusterizerV1::PadResponse(Float_t x)
+void AliTRDclusterizerV1::Transform(AliTRDdataArrayI *digitsIn
+ , AliTRDdataArrayF *digitsOut
+ , Int_t nRowMax, Int_t nColMax, Int_t nTimeTotal
+ , Float_t ADCthreshold
+ , AliTRDCalROC *calGainFactorROC
+ , Float_t calGainFactorDetValue)
{
//
- // The pad response for the chevron pads.
- // We use a simple Gaussian approximation which should be good
- // enough for our purpose.
- // Updated for new PRF 1/5/01.
+ // Apply gain factor
+ // Apply tail cancelation: Transform digitsIn to digitsOut
//
- // The parameters for the response function
- const Float_t kA = 0.8303;
- const Float_t kB = -0.00392;
- const Float_t kC = 0.472 * 0.472;
- const Float_t kD = 2.19;
+ Int_t iRow = 0;
+ Int_t iCol = 0;
+ Int_t iTime = 0;
+
+ AliTRDRecParam *recParam = AliTRDRecParam::Instance();
+ if (!recParam) {
+ AliError("No AliTRDRecParam instance available\n");
+ return;
+ }
+
+ Double_t *inADC = new Double_t[nTimeTotal]; // ADC data before tail cancellation
+ Double_t *outADC = new Double_t[nTimeTotal]; // ADC data after tail cancellation
+
+ for (iRow = 0; iRow < nRowMax; iRow++ ) {
+ for (iCol = 0; iCol < nColMax; iCol++ ) {
+
+ Float_t calGainFactorROCValue = calGainFactorROC->GetValue(iCol,iRow);
+ Double_t gain = calGainFactorDetValue
+ * calGainFactorROCValue;
+
+ for (iTime = 0; iTime < nTimeTotal; iTime++) {
+
+ //
+ // Add gain
+ //
+ inADC[iTime] = digitsIn->GetDataUnchecked(iRow,iCol,iTime);
+ inADC[iTime] /= gain;
+ outADC[iTime] = inADC[iTime];
+
+ }
+
+ // Apply the tail cancelation via the digital filter
+ if (recParam->TCOn()) {
+ DeConvExp(inADC,outADC,nTimeTotal,recParam->GetTCnexp());
+ }
+
+ for (iTime = 0; iTime < nTimeTotal; iTime++) {
+
+ // Store the amplitude of the digit if above threshold
+ if (outADC[iTime] > ADCthreshold) {
+ digitsOut->SetDataUnchecked(iRow,iCol,iTime,outADC[iTime]);
+ }
+
+ }
+
+ }
+ }
- Float_t pr = kA * (kB + TMath::Exp(-TMath::Power(x*x,kD) / (2.*kC)));
+ delete [] inADC;
+ delete [] outADC;
- return (pr);
+ return;
+
+}
+
+//_____________________________________________________________________________
+void AliTRDclusterizerV1::DeConvExp(Double_t *source, Double_t *target
+ , Int_t n, Int_t nexp)
+{
+ //
+ // Tail cancellation by deconvolution for PASA v4 TRF
+ //
+
+ Double_t rates[2];
+ Double_t coefficients[2];
+
+ // Initialization (coefficient = alpha, rates = lambda)
+ Double_t R1 = 1.0;
+ Double_t R2 = 1.0;
+ Double_t C1 = 0.5;
+ Double_t C2 = 0.5;
+
+ if (nexp == 1) { // 1 Exponentials
+ R1 = 1.156;
+ R2 = 0.130;
+ C1 = 0.066;
+ C2 = 0.000;
+ }
+ if (nexp == 2) { // 2 Exponentials
+ R1 = 1.156;
+ R2 = 0.130;
+ C1 = 0.114;
+ C2 = 0.624;
+ }
+
+ coefficients[0] = C1;
+ coefficients[1] = C2;
+
+ Double_t Dt = 0.1;
+
+ rates[0] = TMath::Exp(-Dt/(R1));
+ rates[1] = TMath::Exp(-Dt/(R2));
+
+ Int_t i = 0;
+ Int_t k = 0;
+
+ Double_t reminder[2];
+ Double_t correction;
+ Double_t result;
+
+ // Attention: computation order is important
+ correction = 0.0;
+ for (k = 0; k < nexp; k++) {
+ reminder[k] = 0.0;
+ }
+ for (i = 0; i < n; i++) {
+ result = (source[i] - correction); // No rescaling
+ target[i] = result;
+
+ for (k = 0; k < nexp; k++) {
+ reminder[k] = rates[k] * (reminder[k] + coefficients[k] * result);
+ }
+ correction = 0.0;
+ for (k = 0; k < nexp; k++) {
+ correction += reminder[k];
+ }
+ }
}
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