/************************************************************************** * 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. * **************************************************************************/ /* $Id$ */ /////////////////////////////////////////////////////////////////////////////// // // // TRD cluster finder // // // /////////////////////////////////////////////////////////////////////////////// #include #include #include #include #include #include "AliRunLoader.h" #include "AliLoader.h" #include "AliRawReader.h" #include "AliLog.h" #include "AliAlignObj.h" #include "AliTRDclusterizer.h" #include "AliTRDcluster.h" #include "AliTRDReconstructor.h" #include "AliTRDgeometry.h" #include "AliTRDdataArrayF.h" #include "AliTRDdataArrayI.h" #include "AliTRDdataArrayS.h" #include "AliTRDdataArrayDigits.h" #include "AliTRDdigitsManager.h" #include "AliTRDrawData.h" #include "AliTRDcalibDB.h" #include "AliTRDrecoParam.h" #include "AliTRDCommonParam.h" #include "AliTRDtransform.h" #include "AliTRDSignalIndex.h" #include "AliTRDrawStreamBase.h" #include "AliTRDfeeParam.h" #include "Cal/AliTRDCalROC.h" #include "Cal/AliTRDCalDet.h" #include "Cal/AliTRDCalSingleChamberStatus.h" ClassImp(AliTRDclusterizer) //_____________________________________________________________________________ AliTRDclusterizer::AliTRDclusterizer() :TNamed() ,fRunLoader(NULL) ,fClusterTree(NULL) ,fRecPoints(NULL) ,fTrackletTree(NULL) ,fDigitsManager(NULL) ,fTrackletContainer(NULL) ,fAddLabels(kTRUE) ,fRawVersion(2) ,fIndexesOut(NULL) ,fIndexesMaxima(NULL) ,fTransform(new AliTRDtransform(0)) ,fLUTbin(0) ,fLUT(NULL) { // // AliTRDclusterizer default constructor // AliTRDcalibDB *trd = 0x0; if (!(trd = AliTRDcalibDB::Instance())) { AliFatal("Could not get calibration object"); } fRawVersion = AliTRDfeeParam::Instance()->GetRAWversion(); } //_____________________________________________________________________________ AliTRDclusterizer::AliTRDclusterizer(const Text_t *name, const Text_t *title) :TNamed(name,title) ,fRunLoader(NULL) ,fClusterTree(NULL) ,fRecPoints(NULL) ,fTrackletTree(NULL) ,fDigitsManager(new AliTRDdigitsManager()) ,fTrackletContainer(NULL) ,fAddLabels(kTRUE) ,fRawVersion(2) ,fIndexesOut(NULL) ,fIndexesMaxima(NULL) ,fTransform(new AliTRDtransform(0)) ,fLUTbin(0) ,fLUT(NULL) { // // AliTRDclusterizer constructor // AliTRDcalibDB *trd = 0x0; if (!(trd = AliTRDcalibDB::Instance())) { AliFatal("Could not get calibration object"); } fDigitsManager->CreateArrays(); fRawVersion = AliTRDfeeParam::Instance()->GetRAWversion(); FillLUT(); } //_____________________________________________________________________________ AliTRDclusterizer::AliTRDclusterizer(const AliTRDclusterizer &c) :TNamed(c) ,fRunLoader(NULL) ,fClusterTree(NULL) ,fRecPoints(NULL) ,fTrackletTree(NULL) ,fTrackletContainer(NULL) ,fDigitsManager(NULL) ,fAddLabels(kTRUE) ,fRawVersion(2) ,fIndexesOut(NULL) ,fIndexesMaxima(NULL) ,fTransform(NULL) ,fLUTbin(0) ,fLUT(0) { // // AliTRDclusterizer copy constructor // FillLUT(); } //_____________________________________________________________________________ AliTRDclusterizer::~AliTRDclusterizer() { // // AliTRDclusterizer destructor // if (fRecPoints) { fRecPoints->Delete(); delete fRecPoints; } if (fDigitsManager) { delete fDigitsManager; fDigitsManager = NULL; } if (fTrackletContainer) { delete fTrackletContainer; fTrackletContainer = NULL; } if (fIndexesOut) { delete fIndexesOut; fIndexesOut = NULL; } if (fIndexesMaxima) { delete fIndexesMaxima; fIndexesMaxima = NULL; } if (fTransform) { delete fTransform; fTransform = NULL; } if (fLUT) { delete [] fLUT; fLUT = NULL; } } //_____________________________________________________________________________ AliTRDclusterizer &AliTRDclusterizer::operator=(const AliTRDclusterizer &c) { // // Assignment operator // if (this != &c) { ((AliTRDclusterizer &) c).Copy(*this); } return *this; } //_____________________________________________________________________________ void AliTRDclusterizer::Copy(TObject &c) const { // // Copy function // ((AliTRDclusterizer &) c).fClusterTree = NULL; ((AliTRDclusterizer &) c).fRecPoints = NULL; ((AliTRDclusterizer &) c).fTrackletTree = NULL; ((AliTRDclusterizer &) c).fDigitsManager = NULL; ((AliTRDclusterizer &) c).fTrackletContainer = NULL; ((AliTRDclusterizer &) c).fAddLabels = fAddLabels; ((AliTRDclusterizer &) c).fRawVersion = fRawVersion; ((AliTRDclusterizer &) c).fIndexesOut = NULL; ((AliTRDclusterizer &) c).fIndexesMaxima = NULL; ((AliTRDclusterizer &) c).fTransform = NULL; ((AliTRDclusterizer &) c).fLUTbin = 0; ((AliTRDclusterizer &) c).fLUT = NULL; } //_____________________________________________________________________________ Bool_t AliTRDclusterizer::Open(const Char_t *name, Int_t nEvent) { // // Opens the AliROOT file. Output and input are in the same file // TString evfoldname = AliConfig::GetDefaultEventFolderName(); fRunLoader = AliRunLoader::GetRunLoader(evfoldname); if (!fRunLoader) { fRunLoader = AliRunLoader::Open(name); } if (!fRunLoader) { AliError(Form("Can not open session for file %s.",name)); return kFALSE; } OpenInput(nEvent); OpenOutput(); return kTRUE; } //_____________________________________________________________________________ Bool_t AliTRDclusterizer::OpenOutput() { // // Open the output file // TObjArray *ioArray = 0; AliLoader* loader = fRunLoader->GetLoader("TRDLoader"); loader->MakeTree("R"); fClusterTree = loader->TreeR(); fClusterTree->Branch("TRDcluster","TObjArray",&ioArray,32000,0); return kTRUE; } //_____________________________________________________________________________ Bool_t AliTRDclusterizer::OpenOutput(TTree *clusterTree) { // // Connect the output tree // TObjArray *ioArray = 0; fClusterTree = clusterTree; fClusterTree->Branch("TRDcluster","TObjArray",&ioArray,32000,0); // tracklet writing if (AliTRDReconstructor::GetRecoParam()->IsTrackletWriteEnabled()){ TString evfoldname = AliConfig::GetDefaultEventFolderName(); fRunLoader = AliRunLoader::GetRunLoader(evfoldname); if (!fRunLoader) { fRunLoader = AliRunLoader::Open("galice.root"); } if (!fRunLoader) { AliError(Form("Can not open session for file galice.root.")); return kFALSE; } UInt_t **leaves = new UInt_t *[2]; AliDataLoader *dl = fRunLoader->GetLoader("TRDLoader")->GetDataLoader("tracklets"); if (!dl) { AliError("Could not get the tracklets data loader!"); AliDataLoader *dl = new AliDataLoader("TRD.Tracklets.root","tracklets", "tracklets"); fRunLoader->GetLoader("TRDLoader")->AddDataLoader(dl); } else { fTrackletTree = dl->Tree(); if (!fTrackletTree) { dl->MakeTree(); fTrackletTree = dl->Tree(); } TBranch *trkbranch = fTrackletTree->GetBranch("trkbranch"); if (!trkbranch) fTrackletTree->Branch("trkbranch",leaves[0],"det/i:side/i:tracklets[256]/i"); } } return kTRUE; } //_____________________________________________________________________________ Bool_t AliTRDclusterizer::OpenInput(Int_t nEvent) { // // Opens a ROOT-file with TRD-hits and reads in the digits-tree // // Import the Trees for the event nEvent in the file fRunLoader->GetEvent(nEvent); return kTRUE; } //_____________________________________________________________________________ Bool_t AliTRDclusterizer::WriteClusters(Int_t det) { // // Fills TRDcluster branch in the tree with the clusters // found in detector = det. For det=-1 writes the tree. // if ((det < -1) || (det >= AliTRDgeometry::Ndet())) { AliError(Form("Unexpected detector index %d.\n",det)); return kFALSE; } TBranch *branch = fClusterTree->GetBranch("TRDcluster"); if (!branch) { TObjArray *ioArray = 0; branch = fClusterTree->Branch("TRDcluster","TObjArray",&ioArray,32000,0); } if ((det >= 0) && (det < AliTRDgeometry::Ndet())) { Int_t nRecPoints = RecPoints()->GetEntriesFast(); TObjArray *detRecPoints = new TObjArray(400); for (Int_t i = 0; i < nRecPoints; i++) { AliTRDcluster *c = (AliTRDcluster *) RecPoints()->UncheckedAt(i); if (det == c->GetDetector()) { detRecPoints->AddLast(c); } else { AliError(Form("Attempt to write a cluster with unexpected detector index: got=%d expected=%d\n" ,c->GetDetector() ,det)); } } branch->SetAddress(&detRecPoints); fClusterTree->Fill(); delete detRecPoints; return kTRUE; } if (det == -1) { AliInfo(Form("Writing the cluster tree %s for event %d." ,fClusterTree->GetName(),fRunLoader->GetEventNumber())); if (fRecPoints) { branch->SetAddress(&fRecPoints); AliLoader *loader = fRunLoader->GetLoader("TRDLoader"); loader->WriteRecPoints("OVERWRITE"); } else { AliError("Cluster tree does not exist. Cannot write clusters.\n"); return kFALSE; } return kTRUE; } AliError(Form("Unexpected detector index %d.\n",det)); return kFALSE; } //_____________________________________________________________________________ Bool_t AliTRDclusterizer::WriteTracklets(Int_t det) { UInt_t **leaves = new UInt_t *[2]; for (Int_t i=0; i<2 ;i++){ leaves[i] = new UInt_t[258]; leaves[i][0] = det; // det leaves[i][1] = i; // side memcpy(leaves[i]+2, fTrackletContainer[i], sizeof(UInt_t) * 256); } if (!fTrackletTree){ AliDataLoader *dl = fRunLoader->GetLoader("TRDLoader")->GetDataLoader("tracklets"); dl->MakeTree(); fTrackletTree = dl->Tree(); } TBranch *trkbranch = fTrackletTree->GetBranch("trkbranch"); if (!trkbranch) { trkbranch = fTrackletTree->Branch("trkbranch",leaves[0],"det/i:side/i:tracklets[256]/i"); } for (Int_t i=0; i<2; i++){ if (leaves[i][2]>0) { trkbranch->SetAddress(leaves[i]); fTrackletTree->Fill(); } } AliDataLoader *dl = fRunLoader->GetLoader("TRDLoader")->GetDataLoader("tracklets"); dl->WriteData("OVERWRITE"); //dl->Unload(); delete [] leaves; return kTRUE; } //_____________________________________________________________________________ void AliTRDclusterizer::ResetHelperIndexes(AliTRDSignalIndex *indexesIn) { // // Reset the helper indexes // if (fIndexesOut) { // carefull here - we assume that only row number may change - most probable if (indexesIn->GetNrow() <= fIndexesOut->GetNrow()) fIndexesOut->ResetContent(); else fIndexesOut->ResetContentConditional(indexesIn->GetNrow() , indexesIn->GetNcol() , indexesIn->GetNtime()); } else { fIndexesOut = new AliTRDSignalIndex(indexesIn->GetNrow() , indexesIn->GetNcol() , indexesIn->GetNtime()); } if (fIndexesMaxima) { // carefull here - we assume that only row number may change - most probable if (indexesIn->GetNrow() <= fIndexesMaxima->GetNrow()) { fIndexesMaxima->ResetContent(); } else { fIndexesMaxima->ResetContentConditional(indexesIn->GetNrow() , indexesIn->GetNcol() , indexesIn->GetNtime()); } } else { fIndexesMaxima = new AliTRDSignalIndex(indexesIn->GetNrow() , indexesIn->GetNcol() , indexesIn->GetNtime()); } } //_____________________________________________________________________________ Bool_t AliTRDclusterizer::ReadDigits() { // // Reads the digits arrays from the input aliroot file // if (!fRunLoader) { AliError("No run loader available"); return kFALSE; } AliLoader* loader = fRunLoader->GetLoader("TRDLoader"); if (!loader->TreeD()) { loader->LoadDigits(); } // Read in the digit arrays return (fDigitsManager->ReadDigits(loader->TreeD())); } //_____________________________________________________________________________ Bool_t AliTRDclusterizer::ReadDigits(TTree *digitsTree) { // // Reads the digits arrays from the input tree // // Read in the digit arrays return (fDigitsManager->ReadDigits(digitsTree)); } //_____________________________________________________________________________ Bool_t AliTRDclusterizer::ReadDigits(AliRawReader *rawReader) { // // Reads the digits arrays from the ddl file // AliTRDrawData raw; fDigitsManager = raw.Raw2Digits(rawReader); return kTRUE; } //_____________________________________________________________________________ Bool_t AliTRDclusterizer::MakeClusters() { // // Creates clusters from digits // // Propagate info from the digits manager if (fAddLabels == kTRUE) { fAddLabels = fDigitsManager->UsesDictionaries(); } Bool_t fReturn = kTRUE; for (Int_t i = 0; i < AliTRDgeometry::kNdet; i++) { AliTRDdataArrayDigits *digitsIn = (AliTRDdataArrayDigits*) fDigitsManager->GetDigits(i); // This is to take care of switched off super modules if (!digitsIn->HasData()) { continue; } digitsIn->Expand(); AliTRDSignalIndex* indexes = fDigitsManager->GetIndexes(i); if (indexes->IsAllocated() == kFALSE) { fDigitsManager->BuildIndexes(i); } Bool_t fR = kFALSE; if (indexes->HasEntry()) { if (fAddLabels) { for (Int_t iDict = 0; iDict < AliTRDdigitsManager::kNDict; iDict++) { AliTRDdataArrayI *tracksIn = 0; tracksIn = (AliTRDdataArrayI *) fDigitsManager->GetDictionary(i,iDict); tracksIn->Expand(); } } fR = MakeClusters(i); fReturn = fR && fReturn; } if (fR == kFALSE) { WriteClusters(i); ResetRecPoints(); } // No compress just remove fDigitsManager->RemoveDigits(i); fDigitsManager->RemoveDictionaries(i); fDigitsManager->ClearIndexes(i); } return fReturn; } //_____________________________________________________________________________ Bool_t AliTRDclusterizer::Raw2Clusters(AliRawReader *rawReader) { // // Creates clusters from raw data // return Raw2ClustersChamber(rawReader); } //_____________________________________________________________________________ Bool_t AliTRDclusterizer::Raw2ClustersChamber(AliRawReader *rawReader) { // // Creates clusters from raw data // // Create the digits manager if (!fDigitsManager) { fDigitsManager = new AliTRDdigitsManager(); fDigitsManager->CreateArrays(); } fDigitsManager->SetUseDictionaries(fAddLabels); // tracklet container for raw tracklet writing if (!fTrackletContainer && AliTRDReconstructor::GetRecoParam()->IsTrackletWriteEnabled()) { fTrackletContainer = new UInt_t *[2]; for (Int_t i=0; i<2 ;i++){ fTrackletContainer[i] = new UInt_t[256]; // maximum tracklets for one HC } } AliTRDrawStreamBase *pinput = AliTRDrawStreamBase::GetRawStream(rawReader); AliTRDrawStreamBase &input = *pinput; AliInfo(Form("Stream version: %s", input.IsA()->GetName())); Int_t det = 0; while ((det = input.NextChamber(fDigitsManager,fTrackletContainer)) >= 0) { Bool_t iclusterBranch = kFALSE; if (fDigitsManager->GetIndexes(det)->HasEntry()) { iclusterBranch = MakeClusters(det); } if (iclusterBranch == kFALSE) { WriteClusters(det); ResetRecPoints(); } fDigitsManager->RemoveDigits(det); fDigitsManager->RemoveDictionaries(det); fDigitsManager->ClearIndexes(det); if (!AliTRDReconstructor::GetRecoParam()-> IsTrackletWriteEnabled()) continue; if (*(fTrackletContainer[0]) > 0 || *(fTrackletContainer[1]) > 0) WriteTracklets(det); // if there is tracklet words in this det } if (AliTRDReconstructor::GetRecoParam()->IsTrackletWriteEnabled()){ delete [] fTrackletContainer; fTrackletContainer = NULL; } delete fDigitsManager; fDigitsManager = NULL; delete pinput; pinput = NULL; return kTRUE; } //_____________________________________________________________________________ UChar_t AliTRDclusterizer::GetStatus(Short_t &signal) { // // Check if a pad is masked // UChar_t status = 0; if(signal>0 && TESTBIT(signal, 10)){ CLRBIT(signal, 10); for(int ibit=0; ibit<4; ibit++){ if(TESTBIT(signal, 11+ibit)){ SETBIT(status, ibit); CLRBIT(signal, 11+ibit); } } } return status; } //_____________________________________________________________________________ Bool_t AliTRDclusterizer::MakeClusters(Int_t det) { // // Generates the cluster. // // Get the digits // digits should be expanded beforehand! // digitsIn->Expand(); AliTRDdataArrayDigits *digitsIn = (AliTRDdataArrayDigits *) fDigitsManager->GetDigits(det); // This is to take care of switched off super modules if (!digitsIn->HasData()) { return kFALSE; } AliTRDSignalIndex *indexesIn = fDigitsManager->GetIndexes(det); if (indexesIn->IsAllocated() == kFALSE) { AliError("Indexes do not exist!"); return kFALSE; } AliTRDcalibDB *calibration = AliTRDcalibDB::Instance(); if (!calibration) { AliFatal("No AliTRDcalibDB instance available\n"); return kFALSE; } // ADC thresholds // There is no ADC threshold anymore, and simParam should not be used in clusterizer. KO Float_t adcThreshold = 0; if (!AliTRDReconstructor::GetRecoParam()) { AliError("RecoParam does not exist\n"); return kFALSE; } // Threshold value for the maximum Float_t maxThresh = AliTRDReconstructor::GetRecoParam()->GetClusMaxThresh(); // Threshold value for the digit signal Float_t sigThresh = AliTRDReconstructor::GetRecoParam()->GetClusSigThresh(); // Threshold value for the maximum ( cut noise) Float_t minMaxCutSigma = AliTRDReconstructor::GetRecoParam()->GetMinMaxCutSigma(); // Threshold value for the sum pad ( cut noise) Float_t minLeftRightCutSigma = AliTRDReconstructor::GetRecoParam()->GetMinLeftRightCutSigma(); // Iteration limit for unfolding procedure const Float_t kEpsilon = 0.01; const Int_t kNclus = 3; const Int_t kNsig = 5; Int_t iUnfold = 0; Double_t ratioLeft = 1.0; Double_t ratioRight = 1.0; Double_t padSignal[kNsig]; Double_t clusterSignal[kNclus]; Int_t istack = indexesIn->GetStack(); Int_t ilayer = indexesIn->GetLayer(); Int_t isector = indexesIn->GetSM(); // Start clustering in the chamber Int_t idet = AliTRDgeometry::GetDetector(ilayer,istack,isector); if (idet != det) { AliError("Strange Detector number Missmatch!"); return kFALSE; } // TRD space point transformation fTransform->SetDetector(det); Int_t iGeoLayer = AliGeomManager::kTRD1 + ilayer; Int_t iGeoModule = istack + AliTRDgeometry::Nstack() * isector; UShort_t volid = AliGeomManager::LayerToVolUID(iGeoLayer,iGeoModule); Int_t nColMax = digitsIn->GetNcol(); Int_t nRowMax = digitsIn->GetNrow(); Int_t nTimeTotal = digitsIn->GetNtime(); // Detector wise calibration object for the gain factors const AliTRDCalDet *calGainFactorDet = calibration->GetGainFactorDet(); // Calibration object with pad wise values for the gain factors AliTRDCalROC *calGainFactorROC = calibration->GetGainFactorROC(idet); // Calibration value for chamber wise gain factor Float_t calGainFactorDetValue = calGainFactorDet->GetValue(idet); // Detector wise calibration object for the noise const AliTRDCalDet *calNoiseDet = calibration->GetNoiseDet(); // Calibration object with pad wise values for the noise AliTRDCalROC *calNoiseROC = calibration->GetNoiseROC(idet); // Calibration value for chamber wise noise Float_t calNoiseDetValue = calNoiseDet->GetValue(idet); Int_t nClusters = 0; AliTRDdataArrayF *digitsOut = new AliTRDdataArrayF(nRowMax, nColMax, nTimeTotal); AliTRDdataArrayS padStatus(nRowMax, nColMax, nTimeTotal); ResetHelperIndexes(indexesIn); // Apply the gain and the tail cancelation via digital filter TailCancelation(digitsIn ,digitsOut ,indexesIn ,fIndexesOut ,nTimeTotal ,adcThreshold ,calGainFactorROC ,calGainFactorDetValue); Int_t row = 0; Int_t col = 0; Int_t time = 0; Int_t iPad = 0; UChar_t status[3]={0, 0, 0}, ipos = 0; fIndexesOut->ResetCounters(); while (fIndexesOut->NextRCTbinIndex(row, col, time)){ Float_t signalM = TMath::Abs(digitsOut->GetDataUnchecked(row,col,time)); status[1] = digitsIn->GetPadStatus(row,col,time); if(status[1]) SETBIT(ipos, AliTRDcluster::kMaskedCenter); if(signalM < maxThresh) continue; Float_t noiseMiddleThresh = minMaxCutSigma*calNoiseDetValue*calNoiseROC->GetValue(col,row); if (signalM < noiseMiddleThresh) continue; if (col + 1 >= nColMax || col-1 < 0) continue; Float_t signalL = TMath::Abs(digitsOut->GetDataUnchecked(row,col+1,time)); status[0] = digitsIn->GetPadStatus(row,col+1,time); if(status[0]) SETBIT(ipos, AliTRDcluster::kMaskedLeft); Float_t signalR = TMath::Abs(digitsOut->GetDataUnchecked(row,col-1,time)); status[2] = digitsIn->GetPadStatus(row,col-1,time); if(status[2]) SETBIT(ipos, AliTRDcluster::kMaskedRight); // reject candidates with more than 1 problematic pad if(ipos == 3 || ipos > 4) continue; if(!status[1]){ // good central pad if(!ipos){ // all pads are OK if ((signalL <= signalM) && (signalR < signalM)) { if ((signalL >= sigThresh) || (signalR >= sigThresh)) { Float_t noiseSumThresh = minLeftRightCutSigma*calNoiseDetValue*calNoiseROC->GetValue(col,row); if((signalL+signalR+signalM) >= noiseSumThresh){ // Maximum found, mark the position by a negative signal digitsOut->SetDataUnchecked(row,col,time,-signalM); fIndexesMaxima->AddIndexTBin(row,col,time); padStatus.SetDataUnchecked(row, col, time, ipos); } } } } else { // one of the neighbouring pads are bad if(status[0] && signalR < signalM && signalR >= sigThresh){ digitsOut->SetDataUnchecked(row,col,time,-signalM); digitsOut->SetDataUnchecked(row, col, time+1, 0.); fIndexesMaxima->AddIndexTBin(row,col,time); padStatus.SetDataUnchecked(row, col, time, ipos); } else if(status[2] && signalL <= signalM && signalL >= sigThresh){ digitsOut->SetDataUnchecked(row,col,time,-signalM); digitsOut->SetDataUnchecked(row, col, time-1, 0.); fIndexesMaxima->AddIndexTBin(row,col,time); padStatus.SetDataUnchecked(row, col, time, ipos); } } } else { // wrong maximum pad if ((signalL >= sigThresh) || (signalR >= sigThresh)) { // Maximum found, mark the position by a negative signal digitsOut->SetDataUnchecked(row,col,time,-maxThresh); fIndexesMaxima->AddIndexTBin(row,col,time); padStatus.SetDataUnchecked(row, col, time, ipos); } } } // 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 fIndexesMaxima->ResetCounters(); while (fIndexesMaxima->NextRCTbinIndex(row, col, time)) { // Maximum found ? if (digitsOut->GetDataUnchecked(row,col,time) < 0.0) { for (iPad = 0; iPad < kNclus; iPad++) { Int_t iPadCol = col - 1 + iPad; clusterSignal[iPad] = TMath::Abs(digitsOut->GetDataUnchecked(row,iPadCol,time)); } // Count the number of pads in the cluster Int_t nPadCount = 0; Int_t ii; // Look to the right ii = 0; while (TMath::Abs(digitsOut->GetDataUnchecked(row,col-ii ,time)) >= sigThresh) { nPadCount++; ii++; if (col-ii < 0) break; } // Look to the left ii = 0; while (TMath::Abs(digitsOut->GetDataUnchecked(row,col+ii+1,time)) >= sigThresh){ nPadCount++; ii++; if (col+ii+1 >= nColMax) break; } nClusters++; // Look for 5 pad cluster with minimum in the middle Bool_t fivePadCluster = kFALSE; if (col < (nColMax - 3)){ if (digitsOut->GetDataUnchecked(row,col+2,time) < 0) { fivePadCluster = kTRUE; } if ((fivePadCluster) && (col < (nColMax - 5))) { if (digitsOut->GetDataUnchecked(row,col+4,time) >= sigThresh){ fivePadCluster = kFALSE; } } if ((fivePadCluster) && (col > 1)){ if (digitsOut->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; iUnfold = 0; } // Unfold the 5 pad cluster if (fivePadCluster){ for (iPad = 0; iPad < kNsig; iPad++) { 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,ilayer,padSignal); ratioLeft = 1.0 - ratioRight; clusterSignal[2] *= ratioRight; iUnfold = 1; } // The position of the cluster in COL direction relative to the center pad (pad units) Double_t clusterPosCol = 0.0; if (AliTRDReconstructor::GetRecoParam()->IsLUT()) { // Calculate the position of the cluster by using the // lookup table method clusterPosCol = LUTposition(ilayer,clusterSignal[2] ,clusterSignal[1] ,clusterSignal[0]); } 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; } 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[4] = TMath::Abs(digitsOut->GetDataUnchecked(row,col-2,time)); } if ((col < nColMax - 3) && (TMath::Abs(digitsOut->GetDataUnchecked(row,col+2,time)) < padSignal[3])){ padSignal[0] = TMath::Abs(digitsOut->GetDataUnchecked(row,col+2,time)); } clusterPosCol = GetCOG(padSignal); } // Store the amplitudes of the pads in the cluster for later analysis // and check whether one of these pads is masked in the database 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; } signals[jPad-col+3] = TMath::Nint(TMath::Abs(digitsOut->GetDataUnchecked(row,jPad,time))); } // Transform the local cluster coordinates into calibrated // space point positions defined in the local tracking system. // Here the calibration for T0, Vdrift and ExB is applied as well. Double_t clusterXYZ[6]; clusterXYZ[0] = clusterPosCol; clusterXYZ[1] = clusterSignal[2]; clusterXYZ[2] = clusterSignal[1]; clusterXYZ[3] = clusterSignal[0]; clusterXYZ[4] = 0.0; clusterXYZ[5] = 0.0; Int_t clusterRCT[3]; clusterRCT[0] = row; clusterRCT[1] = col; clusterRCT[2] = 0; Bool_t out = kTRUE; if (fTransform->Transform(clusterXYZ, clusterRCT, ((UInt_t) time), out, 0)) { // Add the cluster to the output array // The track indices will be stored later Float_t clusterPos[3]; clusterPos[0] = clusterXYZ[0]; clusterPos[1] = clusterXYZ[1]; clusterPos[2] = clusterXYZ[2]; Float_t clusterSig[2]; clusterSig[0] = clusterXYZ[4]; clusterSig[1] = clusterXYZ[5]; Double_t clusterCharge = clusterXYZ[3]; Char_t clusterTimeBin = ((Char_t) clusterRCT[2]); AliTRDcluster *cluster = new AliTRDcluster(idet ,clusterCharge ,clusterPos ,clusterSig ,0x0 ,((Char_t) nPadCount) ,signals ,((UChar_t) col) ,((UChar_t) row) ,((UChar_t) time) ,clusterTimeBin ,clusterPosCol ,volid); cluster->SetInChamber(!out); UChar_t maskPosition = padStatus.GetDataUnchecked(row, col, time); if (maskPosition) { cluster->SetPadMaskedPosition(maskPosition); if (maskPosition & AliTRDcluster::kMaskedLeft) { cluster->SetPadMaskedStatus(status[0]); } else if (maskPosition & AliTRDcluster::kMaskedCenter) { cluster->SetPadMaskedStatus(status[1]); } else { cluster->SetPadMaskedStatus(status[2]); } } // 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; } // Count the number of cluster in the current ROC nClusterROC++; } // if: Transform ok ? } // if: Maximum found ? } delete digitsOut; if (fAddLabels) AddLabels(idet, firstClusterROC, nClusterROC); // Write the cluster and reset the array WriteClusters(idet); ResetRecPoints(); return kTRUE; } //_____________________________________________________________________________ Bool_t AliTRDclusterizer::AddLabels(Int_t idet, Int_t firstClusterROC, Int_t nClusterROC) { // // Add the track indices to the found clusters // const Int_t kNclus = 3; const Int_t kNdict = AliTRDdigitsManager::kNDict; const Int_t kNtrack = kNdict * kNclus; Int_t iClusterROC = 0; Int_t row = 0; Int_t col = 0; Int_t time = 0; Int_t iPad = 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 AliTRDdataArrayI *tracksIn = 0; for (Int_t iDict = 0; iDict < kNdict; iDict++) { // tracksIn should be expanded beforehand! tracksIn = (AliTRDdataArrayI *) fDigitsManager->GetDictionary(idet,iDict); // 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; } } } // 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]); } delete [] idxTracks; return kTRUE; } //_____________________________________________________________________________ Double_t AliTRDclusterizer::GetCOG(Double_t signal[5]) const { // // 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]; // ???????????? CBL Double_t res = (0.0 * (-signal[0] + signal[4]) + (-signal[1] + signal[3])) / sum; return res; } //_____________________________________________________________________________ Double_t AliTRDclusterizer::Unfold(Double_t eps, Int_t layer, Double_t *padSignal) { // // Method to unfold neighbouring maxima. // The charge ratio on the overlapping pad is calculated // until there is no more change within the range given by eps. // The resulting ratio is then returned to the calling method. // 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 Double_t ratio = 0.5; // Start value for ratio Double_t prevRatio = 0.0; // Store previous ratio 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)) { itStep++; prevRatio = ratio; // Cluster position according to charge ratio 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 irc = calibration->PadResponse(1.0,maxLeft ,layer,newSignal); Double_t ampLeft = padSignal[1] / newSignal[1]; irc = calibration->PadResponse(1.0,maxRight,layer,newSignal); Double_t ampRight = padSignal[3] / newSignal[1]; // Apply pad response to parameters irc = calibration->PadResponse(ampLeft ,maxLeft ,layer,newLeftSignal ); irc = calibration->PadResponse(ampRight,maxRight,layer,newRightSignal); // Calculate new overlapping ratio ratio = TMath::Min((Double_t) 1.0 ,newLeftSignal[2] / (newLeftSignal[2] + newRightSignal[0])); } return ratio; } //_____________________________________________________________________________ void AliTRDclusterizer::TailCancelation(AliTRDdataArrayDigits *digitsIn , AliTRDdataArrayF *digitsOut , AliTRDSignalIndex *indexesIn , AliTRDSignalIndex *indexesOut , Int_t nTimeTotal , Float_t adcThreshold , AliTRDCalROC *calGainFactorROC , Float_t calGainFactorDetValue) { // // Applies the tail cancelation and gain factors: // Transform digitsIn to digitsOut // Int_t iRow = 0; Int_t iCol = 0; Int_t iTime = 0; Double_t *inADC = new Double_t[nTimeTotal]; // ADC data before tail cancellation Double_t *outADC = new Double_t[nTimeTotal]; // ADC data after tail cancellation indexesIn->ResetCounters(); while (indexesIn->NextRCIndex(iRow, iCol)) { Float_t calGainFactorROCValue = calGainFactorROC->GetValue(iCol,iRow); Double_t gain = calGainFactorDetValue * calGainFactorROCValue; Bool_t corrupted = kFALSE; for (iTime = 0; iTime < nTimeTotal; iTime++) { // Apply gain gain factor inADC[iTime] = digitsIn->GetDataUnchecked(iRow,iCol,iTime); if(digitsIn->GetPadStatus(iRow, iCol, iTime)) corrupted = kTRUE; inADC[iTime] /= gain; outADC[iTime] = inADC[iTime]; } if(!corrupted) { // Apply the tail cancelation via the digital filter // (only for non-coorupted pads) if (AliTRDReconstructor::GetRecoParam()->IsTailCancelation()) { DeConvExp(inADC,outADC,nTimeTotal,AliTRDReconstructor::GetRecoParam()->GetTCnexp()); } } indexesIn->ResetTbinCounter(); while (indexesIn->NextTbinIndex(iTime)) { // Store the amplitude of the digit if above threshold if (outADC[iTime] > adcThreshold) { digitsOut->SetDataUnchecked(iRow,iCol,iTime,outADC[iTime]); indexesOut->AddIndexTBin(iRow,iCol,iTime); } } // while itime } // while irow icol delete [] inADC; delete [] outADC; return; } //_____________________________________________________________________________ void AliTRDclusterizer::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 = 0.0; Double_t result = 0.0; // Attention: computation order is important 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]; } } } //_____________________________________________________________________________ void AliTRDclusterizer::ResetRecPoints() { // // Resets the list of rec points // if (fRecPoints) { fRecPoints->Delete(); } } //_____________________________________________________________________________ TObjArray *AliTRDclusterizer::RecPoints() { // // Returns the list of rec points // if (!fRecPoints) { fRecPoints = new TObjArray(400); } return fRecPoints; } //_____________________________________________________________________________ void AliTRDclusterizer::FillLUT() { // // Create the LUT // const Int_t kNlut = 128; fLUTbin = AliTRDgeometry::kNlayer * kNlut; // The lookup table from Bogdan Float_t lut[AliTRDgeometry::kNlayer][kNlut] = { { 0.0070, 0.0150, 0.0224, 0.0298, 0.0374, 0.0454, 0.0533, 0.0611, 0.0684, 0.0755, 0.0827, 0.0900, 0.0975, 0.1049, 0.1120, 0.1187, 0.1253, 0.1318, 0.1385, 0.1453, 0.1519, 0.1584, 0.1646, 0.1704, 0.1762, 0.1821, 0.1879, 0.1938, 0.1996, 0.2053, 0.2108, 0.2160, 0.2210, 0.2260, 0.2310, 0.2361, 0.2411, 0.2461, 0.2509, 0.2557, 0.2602, 0.2646, 0.2689, 0.2732, 0.2774, 0.2816, 0.2859, 0.2901, 0.2942, 0.2983, 0.3022, 0.3061, 0.3099, 0.3136, 0.3172, 0.3207, 0.3242, 0.3278, 0.3312, 0.3347, 0.3382, 0.3416, 0.3450, 0.3483, 0.3515, 0.3547, 0.3579, 0.3609, 0.3639, 0.3669, 0.3698, 0.3727, 0.3756, 0.3785, 0.3813, 0.3842, 0.3870, 0.3898, 0.3926, 0.3952, 0.3979, 0.4005, 0.4032, 0.4057, 0.4082, 0.4108, 0.4132, 0.4157, 0.4181, 0.4205, 0.4228, 0.4252, 0.4275, 0.4299, 0.4322, 0.4345, 0.4367, 0.4390, 0.4412, 0.4434, 0.4456, 0.4478, 0.4499, 0.4520, 0.4541, 0.4562, 0.4583, 0.4603, 0.4623, 0.4643, 0.4663, 0.4683, 0.4702, 0.4722, 0.4741, 0.4758, 0.4774, 0.4790, 0.4805, 0.4824, 0.4844, 0.4863, 0.4883, 0.4902, 0.4921, 0.4940, 0.4959, 0.4978 }, { 0.0072, 0.0156, 0.0235, 0.0313, 0.0394, 0.0478, 0.0561, 0.0642, 0.0718, 0.0792, 0.0868, 0.0947, 0.1025, 0.1101, 0.1172, 0.1241, 0.1309, 0.1378, 0.1449, 0.1518, 0.1586, 0.1650, 0.1710, 0.1770, 0.1830, 0.1891, 0.1952, 0.2011, 0.2070, 0.2125, 0.2177, 0.2229, 0.2280, 0.2332, 0.2383, 0.2435, 0.2484, 0.2533, 0.2581, 0.2627, 0.2670, 0.2714, 0.2757, 0.2799, 0.2842, 0.2884, 0.2927, 0.2968, 0.3008, 0.3048, 0.3086, 0.3123, 0.3159, 0.3195, 0.3231, 0.3266, 0.3301, 0.3335, 0.3370, 0.3404, 0.3438, 0.3471, 0.3504, 0.3536, 0.3567, 0.3598, 0.3628, 0.3657, 0.3686, 0.3715, 0.3744, 0.3772, 0.3800, 0.3828, 0.3856, 0.3884, 0.3911, 0.3938, 0.3965, 0.3991, 0.4016, 0.4042, 0.4067, 0.4092, 0.4116, 0.4140, 0.4164, 0.4187, 0.4211, 0.4234, 0.4257, 0.4280, 0.4302, 0.4325, 0.4347, 0.4369, 0.4391, 0.4413, 0.4434, 0.4456, 0.4477, 0.4497, 0.4518, 0.4538, 0.4558, 0.4578, 0.4598, 0.4618, 0.4637, 0.4656, 0.4675, 0.4694, 0.4713, 0.4732, 0.4750, 0.4766, 0.4781, 0.4797, 0.4813, 0.4832, 0.4851, 0.4870, 0.4888, 0.4906, 0.4925, 0.4942, 0.4960, 0.4978 }, { 0.0075, 0.0163, 0.0246, 0.0328, 0.0415, 0.0504, 0.0592, 0.0674, 0.0753, 0.0832, 0.0914, 0.0996, 0.1077, 0.1154, 0.1225, 0.1296, 0.1369, 0.1442, 0.1515, 0.1585, 0.1652, 0.1714, 0.1776, 0.1839, 0.1902, 0.1965, 0.2025, 0.2085, 0.2141, 0.2194, 0.2247, 0.2299, 0.2352, 0.2405, 0.2457, 0.2507, 0.2557, 0.2604, 0.2649, 0.2693, 0.2737, 0.2780, 0.2823, 0.2867, 0.2909, 0.2951, 0.2992, 0.3033, 0.3072, 0.3110, 0.3146, 0.3182, 0.3218, 0.3253, 0.3288, 0.3323, 0.3357, 0.3392, 0.3426, 0.3459, 0.3492, 0.3524, 0.3555, 0.3586, 0.3616, 0.3645, 0.3674, 0.3703, 0.3731, 0.3759, 0.3787, 0.3815, 0.3843, 0.3870, 0.3897, 0.3925, 0.3950, 0.3976, 0.4002, 0.4027, 0.4052, 0.4076, 0.4101, 0.4124, 0.4148, 0.4171, 0.4194, 0.4217, 0.4239, 0.4262, 0.4284, 0.4306, 0.4328, 0.4350, 0.4371, 0.4393, 0.4414, 0.4435, 0.4455, 0.4476, 0.4496, 0.4516, 0.4536, 0.4555, 0.4575, 0.4594, 0.4613, 0.4632, 0.4650, 0.4669, 0.4687, 0.4705, 0.4723, 0.4741, 0.4758, 0.4773, 0.4789, 0.4804, 0.4821, 0.4839, 0.4857, 0.4875, 0.4893, 0.4910, 0.4928, 0.4945, 0.4961, 0.4978 }, { 0.0078, 0.0171, 0.0258, 0.0345, 0.0438, 0.0532, 0.0624, 0.0708, 0.0791, 0.0875, 0.0962, 0.1048, 0.1130, 0.1206, 0.1281, 0.1356, 0.1432, 0.1508, 0.1582, 0.1651, 0.1716, 0.1780, 0.1845, 0.1910, 0.1975, 0.2038, 0.2099, 0.2155, 0.2210, 0.2263, 0.2317, 0.2371, 0.2425, 0.2477, 0.2528, 0.2578, 0.2626, 0.2671, 0.2715, 0.2759, 0.2803, 0.2846, 0.2890, 0.2933, 0.2975, 0.3016, 0.3056, 0.3095, 0.3132, 0.3168, 0.3204, 0.3239, 0.3274, 0.3309, 0.3344, 0.3378, 0.3412, 0.3446, 0.3479, 0.3511, 0.3543, 0.3574, 0.3603, 0.3633, 0.3662, 0.3690, 0.3718, 0.3747, 0.3774, 0.3802, 0.3829, 0.3857, 0.3883, 0.3910, 0.3936, 0.3962, 0.3987, 0.4012, 0.4037, 0.4061, 0.4085, 0.4109, 0.4132, 0.4155, 0.4177, 0.4200, 0.4222, 0.4244, 0.4266, 0.4288, 0.4309, 0.4331, 0.4352, 0.4373, 0.4394, 0.4414, 0.4435, 0.4455, 0.4475, 0.4494, 0.4514, 0.4533, 0.4552, 0.4571, 0.4590, 0.4608, 0.4626, 0.4645, 0.4662, 0.4680, 0.4698, 0.4715, 0.4733, 0.4750, 0.4766, 0.4781, 0.4796, 0.4812, 0.4829, 0.4846, 0.4863, 0.4880, 0.4897, 0.4914, 0.4930, 0.4946, 0.4963, 0.4979 }, { 0.0081, 0.0178, 0.0270, 0.0364, 0.0463, 0.0562, 0.0656, 0.0744, 0.0831, 0.0921, 0.1013, 0.1102, 0.1183, 0.1261, 0.1339, 0.1419, 0.1499, 0.1576, 0.1648, 0.1715, 0.1782, 0.1849, 0.1917, 0.1984, 0.2048, 0.2110, 0.2167, 0.2223, 0.2278, 0.2333, 0.2389, 0.2444, 0.2497, 0.2548, 0.2598, 0.2645, 0.2691, 0.2735, 0.2780, 0.2824, 0.2868, 0.2912, 0.2955, 0.2997, 0.3038, 0.3078, 0.3116, 0.3152, 0.3188, 0.3224, 0.3259, 0.3294, 0.3329, 0.3364, 0.3398, 0.3432, 0.3465, 0.3497, 0.3529, 0.3561, 0.3591, 0.3620, 0.3649, 0.3677, 0.3705, 0.3733, 0.3761, 0.3788, 0.3816, 0.3843, 0.3869, 0.3896, 0.3922, 0.3948, 0.3973, 0.3998, 0.4022, 0.4047, 0.4070, 0.4094, 0.4117, 0.4139, 0.4162, 0.4184, 0.4206, 0.4227, 0.4249, 0.4270, 0.4291, 0.4313, 0.4334, 0.4354, 0.4375, 0.4395, 0.4415, 0.4435, 0.4455, 0.4474, 0.4493, 0.4512, 0.4531, 0.4550, 0.4568, 0.4586, 0.4604, 0.4622, 0.4639, 0.4657, 0.4674, 0.4691, 0.4708, 0.4725, 0.4742, 0.4758, 0.4773, 0.4788, 0.4803, 0.4819, 0.4836, 0.4852, 0.4869, 0.4885, 0.4901, 0.4917, 0.4933, 0.4948, 0.4964, 0.4979 }, { 0.0085, 0.0189, 0.0288, 0.0389, 0.0497, 0.0603, 0.0699, 0.0792, 0.0887, 0.0985, 0.1082, 0.1170, 0.1253, 0.1336, 0.1421, 0.1505, 0.1587, 0.1662, 0.1733, 0.1803, 0.1874, 0.1945, 0.2014, 0.2081, 0.2143, 0.2201, 0.2259, 0.2316, 0.2374, 0.2431, 0.2487, 0.2541, 0.2593, 0.2642, 0.2689, 0.2735, 0.2781, 0.2826, 0.2872, 0.2917, 0.2961, 0.3003, 0.3045, 0.3086, 0.3125, 0.3162, 0.3198, 0.3235, 0.3270, 0.3306, 0.3342, 0.3377, 0.3411, 0.3446, 0.3479, 0.3511, 0.3543, 0.3575, 0.3605, 0.3634, 0.3663, 0.3691, 0.3720, 0.3748, 0.3775, 0.3803, 0.3830, 0.3857, 0.3884, 0.3911, 0.3937, 0.3962, 0.3987, 0.4012, 0.4036, 0.4060, 0.4084, 0.4107, 0.4129, 0.4152, 0.4174, 0.4196, 0.4218, 0.4239, 0.4261, 0.4282, 0.4303, 0.4324, 0.4344, 0.4365, 0.4385, 0.4405, 0.4425, 0.4445, 0.4464, 0.4483, 0.4502, 0.4521, 0.4539, 0.4558, 0.4576, 0.4593, 0.4611, 0.4629, 0.4646, 0.4663, 0.4680, 0.4697, 0.4714, 0.4730, 0.4747, 0.4759, 0.4769, 0.4780, 0.4790, 0.4800, 0.4811, 0.4827, 0.4843, 0.4859, 0.4874, 0.4889, 0.4905, 0.4920, 0.4935, 0.4950, 0.4965, 0.4979 } }; if (fLUT) { delete [] fLUT; } fLUT = new Double_t[fLUTbin]; for (Int_t ilayer = 0; ilayer < AliTRDgeometry::kNlayer; ilayer++) { for (Int_t ilut = 0; ilut < kNlut; ilut++ ) { fLUT[ilayer*kNlut+ilut] = lut[ilayer][ilut]; } } } //_____________________________________________________________________________ Double_t AliTRDclusterizer::LUTposition(Int_t ilayer, Double_t ampL , Double_t ampC, Double_t ampR) const { // // Calculates the cluster position using the lookup table. // Method provided by Bogdan Vulpescu. // const Int_t kNlut = 128; Double_t pos; Double_t x = 0.0; Double_t xmin; Double_t xmax; Double_t xwid; Int_t side = 0; Int_t ix; Double_t xMin[AliTRDgeometry::kNlayer] = { 0.006492, 0.006377, 0.006258 , 0.006144, 0.006030, 0.005980 }; Double_t xMax[AliTRDgeometry::kNlayer] = { 0.960351, 0.965870, 0.970445 , 0.974352, 0.977667, 0.996101 }; if (ampL > ampR) { x = (ampL - ampR) / ampC; side = -1; } else if (ampL < ampR) { x = (ampR - ampL) / ampC; side = +1; } if (ampL != ampR) { xmin = xMin[ilayer] + 0.000005; xmax = xMax[ilayer] - 0.000005; xwid = (xmax - xmin) / 127.0; if (x < xmin) { pos = 0.0000; } else if (x > xmax) { pos = side * 0.5000; } else { ix = (Int_t) ((x - xmin) / xwid); pos = side * fLUT[ilayer*kNlut+ix]; } } else { pos = 0.0; } return pos; }