+
/**************************************************************************
* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
* *
#include "AliRun.h"
#include "AliRunLoader.h"
#include "AliLoader.h"
+#include "AliRawReader.h"
#include "AliTRDclusterizerV1.h"
-#include "AliTRDmatrix.h"
#include "AliTRDgeometry.h"
#include "AliTRDdataArrayF.h"
#include "AliTRDdataArrayI.h"
#include "AliTRDdigitsManager.h"
-#include "AliTRDparameter.h"
+#include "AliTRDpadPlane.h"
+#include "AliTRDrawData.h"
+#include "AliTRDcalibDB.h"
+#include "AliTRDSimParam.h"
+#include "AliTRDRecParam.h"
+#include "AliTRDCommonParam.h"
+#include "AliTRDcluster.h"
ClassImp(AliTRDclusterizerV1)
}
//_____________________________________________________________________________
-void AliTRDclusterizerV1::Copy(TObject &c)
+void AliTRDclusterizerV1::Copy(TObject &c) const
{
//
// Copy function
}
+//_____________________________________________________________________________
+Bool_t AliTRDclusterizerV1::ReadDigits(AliRawReader* rawReader)
+{
+ //
+ // Reads the digits arrays from the ddl file
+ //
+
+ AliTRDrawData raw;
+
+ fDigitsManager = raw.Raw2Digits(rawReader);
+
+ return kTRUE;
+
+}
+
//_____________________________________________________________________________
Bool_t AliTRDclusterizerV1::MakeClusters()
{
*/
// Get the geometry
- AliTRDgeometry *geo = AliTRDgeometry::GetGeometry(fRunLoader);
-
- // Create a default parameter class if none is defined
- if (!fPar) {
- fPar = new AliTRDparameter("TRDparameter","Standard TRD parameter");
+ AliTRDgeometry *geo = AliTRDgeometry::GetGeometry(fRunLoader);
+ AliTRDcalibDB* calibration = AliTRDcalibDB::Instance();
+ if (!calibration)
+ {
printf("<AliTRDclusterizerV1::MakeCluster> ");
- printf("Create the default parameter object.\n");
+ printf("ERROR getting instance of AliTRDcalibDB");
+ return kFALSE;
}
+
+ AliTRDSimParam* simParam = AliTRDSimParam::Instance();
+ if (!simParam)
+ {
+ printf("<AliTRDclusterizerV1::MakeCluster> ");
+ printf("ERROR getting instance of AliTRDSimParam");
+ return kFALSE;
+ }
+
+ AliTRDRecParam* recParam = AliTRDRecParam::Instance();
+ if (!recParam)
+ {
+ printf("<AliTRDclusterizerV1::MakeCluster> ");
+ printf("ERROR getting instance of AliTRDRecParam");
+ return kFALSE;
+ }
+
+ AliTRDCommonParam* commonParam = AliTRDCommonParam::Instance();
+ if (!commonParam)
+ {
+ printf("<AliTRDclusterizerV1::MakeDigits> ");
+ printf("Could not get common params\n");
+ return kFALSE;
+ }
+
+ Float_t ADCthreshold = simParam->GetADCthreshold();
- 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("OmegaTau = %f \n",omegaTau);
printf("<AliTRDclusterizerV1::MakeCluster> ");
printf("Start creating clusters.\n");
}
- AliTRDdataArrayI *digits;
+ AliTRDdataArrayI *digitsIn;
AliTRDdataArrayI *track0;
AliTRDdataArrayI *track1;
AliTRDdataArrayI *track2;
// Threshold value for the maximum
- Int_t maxThresh = fPar->GetClusMaxThresh();
+ Float_t maxThresh = recParam->GetClusMaxThresh();
// Threshold value for the digit signal
- Int_t sigThresh = fPar->GetClusSigThresh();
-
+ Float_t sigThresh = recParam->GetClusSigThresh();
// Iteration limit for unfolding procedure
const Float_t kEpsilon = 0.01;
const Int_t kNsig = 5;
const Int_t kNtrack = 3 * kNclus;
- Int_t iType = 0;
- Int_t iUnfold = 0;
+ Int_t iType = 0;
+ Int_t iUnfold = 0;
+ Double_t ratioLeft = 1.0;
+ Double_t ratioRight = 1.0;
+
+ //
+ Double_t padSignal[kNsig];
+ Double_t clusterSignal[kNclus];
+ Double_t clusterPads[kNclus];
+ Int_t clusterTracks[kNtrack];
- Float_t ratioLeft = 1.0;
- Float_t ratioRight = 1.0;
+ 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();
- Float_t padSignal[kNsig];
- Float_t clusterSignal[kNclus];
- Float_t clusterPads[kNclus];
- Int_t clusterDigit[kNclus];
- Int_t clusterTracks[kNtrack];
+ Int_t nTimeTotal = calibration->GetNumberOfTimeBins();
- 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();
+ if (fVerbose > 0) {
+ printf("<AliTRDclusterizerV1::MakeCluster> ");
+ printf("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++) {
- Int_t idet = geo->GetDetector(iplan,icham,isect);
+ Int_t idet = geo->GetDetector(iplan,icham,isect);
+
+ Int_t nRowMax = commonParam->GetRowMax(iplan,icham,isect);
+ Int_t nColMax = commonParam->GetColMax(iplan);
Int_t nClusters = 0;
Int_t nClusters2pad = 0;
,icham,iplan,isect);
}
- Int_t nRowMax = fPar->GetRowMax(iplan,icham,isect);
- Int_t nColMax = fPar->GetColMax(iplan);
- Int_t nTimeBefore = fPar->GetTimeBefore();
- Int_t nTimeTotal = fPar->GetTimeTotal();
-
- 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);
+ AliTRDpadPlane *padPlane = commonParam->GetPadPlane(iplan,icham);
// Get the digits
- digits = fDigitsManager->GetDigits(idet);
- digits->Expand();
+ digitsIn = fDigitsManager->GetDigits(idet);
+ digitsIn->Expand();
+ AliTRDdataArrayF *digitsOut = new AliTRDdataArrayF(digitsIn->GetNrow(), digitsIn->GetNcol(), digitsIn->GetNtime());
+
+ Transform(digitsIn, digitsOut, idet, nRowMax, nColMax, nTimeTotal, ADCthreshold);
+
track0 = fDigitsManager->GetDictionary(idet,0);
track0->Expand();
track1 = fDigitsManager->GetDictionary(idet,1);
// Loop through the chamber and find the maxima
for ( row = 0; row < nRowMax; row++) {
- // for ( col = 2; col < nColMax; col++) {
- for ( col = 4; col < nColMax-2; col++) {
+ for ( col = 2; col < nColMax; col++) {
+ //for ( col = 4; col < nColMax-2; 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 signalL = TMath::Abs(digitsOut->GetDataUnchecked(row,col ,time));
+ Float_t signalM = TMath::Abs(digitsOut->GetDataUnchecked(row,col-1,time));
+ Float_t signalR = TMath::Abs(digitsOut->GetDataUnchecked(row,col-2,time));
+// // Lonok for the maximum
+// if (signalM >= maxThresh) {
+// if (((signalL >= sigThresh) &&
+// (signalL < signalM)) ||
+// ((signalR >= sigThresh) &&
+// (signalR < signalM))) {
+// // Maximum found, mark the position by a negative signal
+// digitsOut->SetDataUnchecked(row,col-1,time,-signalM);
+// }
+// }
// Look for the maximum
if (signalM >= maxThresh) {
- if (((signalL >= sigThresh) &&
- (signalL < signalM)) ||
- ((signalR >= sigThresh) &&
- (signalR < signalM))) {
+ if ( (TMath::Abs(signalL)<=signalM) && (TMath::Abs(signalR)<=signalM) &&
+ (TMath::Abs(signalL)+TMath::Abs(signalR))>sigThresh ) {
// Maximum found, mark the position by a negative signal
- digits->SetDataUnchecked(row,col-1,time,-signalM);
+ digitsOut->SetDataUnchecked(row,col-1,time,-signalM);
}
}
-
}
}
}
for ( col = 1; col < nColMax-1; col++) {
// Maximum found ?
- if (digits->GetDataUnchecked(row,col,time) < 0) {
+ if (digitsOut->GetDataUnchecked(row,col,time) < 0) {
Int_t iPad;
for (iPad = 0; iPad < kNclus; iPad++) {
Int_t iPadCol = col - 1 + iPad;
- clusterSignal[iPad] = TMath::Abs(digits->GetDataUnchecked(row
+ clusterSignal[iPad] = TMath::Abs(digitsOut->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;
// 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))
+ while (TMath::Abs(digitsOut->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))
+ while (TMath::Abs(digitsOut->GetDataUnchecked(row,col+ii+1,time))
>= sigThresh) {
nPadCount++;
ii++;
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 (digitsOut->GetDataUnchecked(row,col+2,time) < 0) {
fivePadCluster = kTRUE;
}
if ((fivePadCluster) && (col < nColMax-5)) {
- if (digits->GetDataUnchecked(row,col+4,time) >= sigThresh) {
+ if (digitsOut->GetDataUnchecked(row,col+4,time) >= sigThresh) {
fivePadCluster = kFALSE;
}
}
if ((fivePadCluster) && (col > 1)) {
- if (digits->GetDataUnchecked(row,col-2,time) >= sigThresh) {
+ 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;
+ iType = 5;
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,iplan,padSignal);
ratioLeft = 1.0 - ratioRight;
clusterSignal[2] *= ratioRight;
- iType = 3;
+ iType = 5;
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;
// Take the shift of the additional time bins into account
- clusterPads[2] = time - nTimeBefore + 0.5;
-
- if (fPar->LUTOn()) {
+ clusterPads[2] = time + 0.5;
+
+ if (recParam->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]);
-
+ 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
- clusterPads[1] = col + 0.5
- + (clusterSignal[2] - clusterSignal[0])
- / clusterCharge;
+ for (Int_t i=0;i<5;i++) padSignal[i]=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[0] = TMath::Abs(digitsOut->GetDataUnchecked(row,col-2,time));
+ }
+ 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);
}
- 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);
- }
-
- // 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];
+ Double_t q0 = clusterSignal[0];
+ Double_t q1 = clusterSignal[1];
+ Double_t q2 = clusterSignal[2];
+ Double_t clusterSigmaY2 = (q1*(q0+q2)+4*q0*q2) /
+ (clusterCharge*clusterCharge);
+
+
+
+ // Calculate the position and the error
+
+ // correct for t0
+ Int_t clusterTimeBin = TMath::Nint(time - calibration->GetT0(idet, col, row));
+
+ Double_t colSize = padPlane->GetColSize(col);
+ Double_t rowSize = padPlane->GetRowSize(row);
+ Double_t clusterPos[3];
+ clusterPos[0] = padPlane->GetColPos(col) - (clusterPads[1]+0.5)*colSize; // MI change
+ clusterPos[1] = padPlane->GetRowPos(row) - 0.5*rowSize; //MI change
+ clusterPos[2] = CalcXposFromTimebin(clusterPads[2], idet, col, row);
+ Double_t clusterSig[2];
clusterSig[0] = (clusterSigmaY2 + 1./12.) * colSize*colSize;
- clusterSig[1] = rowSize * rowSize / 12.;
-
+ clusterSig[1] = rowSize * rowSize / 12.;
+
+
// Add the cluster to the output array
- AddCluster(clusterPos
- ,idet
- ,clusterCharge
- ,clusterTracks
- ,clusterSig
- ,iType);
-
+ AliTRDcluster * cluster = AddCluster(clusterPos
+ ,clusterTimeBin
+ ,idet
+ ,clusterCharge
+ ,clusterTracks
+ ,clusterSig
+ ,iType,clusterPads[1]);
+ //
+ //
+ 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)));
+ }
+ cluster->SetSignals(signals);
}
}
}
- }
+ }
- // Compress the arrays
- digits->Compress(1,0);
+ delete digitsOut;
+
+ // Compress the arrays
track0->Compress(1,0);
- track1->Compress(1,0);
+ track1->Compress(1,0);
track2->Compress(1,0);
// Write the cluster and reset the array
WriteClusters(idet);
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);
- }
-
}
}
}
printf("Done.\n");
}
+ //delete digitsIn;
+
return kTRUE;
}
//_____________________________________________________________________________
-Float_t AliTRDclusterizerV1::Unfold(Float_t eps, Int_t plane, 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 irc = 0;
- Int_t itStep = 0; // Count iteration steps
+ AliTRDcalibDB* calibration = AliTRDcalibDB::Instance();
+ if (!calibration)
+ {
+ printf("<AliTRDclusterizerMI::Unfold> ");
+ printf("ERROR getting instance of AliTRDcalibDB");
+ 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; // 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 newSignal[3] = {0};
+ Double_t newLeftSignal[3] = {0}; // Array to store left cluster signal
+ Double_t newRightSignal[3] = {0}; // Array to store right cluster signal
+ Double_t newSignal[3] = {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-ratio)*padSignal[2] + padSignal[3] + padSignal[4]);
// 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];
+ 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
- irc = fPar->PadResponse(ampLeft ,maxLeft ,plane,newLeftSignal );
- irc = fPar->PadResponse(ampRight,maxRight,plane,newRightSignal);
+ 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] /
+ ratio = TMath::Min((Double_t)1.0,newLeftSignal[2] /
(newLeftSignal[2] + newRightSignal[0]));
}
}
+//_____________________________________________________________________________
+void AliTRDclusterizerV1::Transform(AliTRDdataArrayI* digitsIn,
+ AliTRDdataArrayF* digitsOut,
+ Int_t idet, Int_t nRowMax,
+ Int_t nColMax, Int_t nTimeTotal,
+ Float_t ADCthreshold)
+{
+
+ //
+ // Apply gain factor
+ // Apply tail cancellation: Transform digitsIn to digitsOut
+ //
+
+
+ AliTRDRecParam* recParam = AliTRDRecParam::Instance();
+ if (!recParam)
+ {
+ printf("<AliTRDclusterizerV1::Transform> ");
+ printf("ERROR getting instance of AliTRDRecParam");
+ return;
+ }
+ AliTRDcalibDB* calibration = AliTRDcalibDB::Instance();
+
+ Double_t *inADC = new Double_t[nTimeTotal]; // adc data before tail cancellation
+ Double_t *outADC = new Double_t[nTimeTotal]; // adc data after tail cancellation
+
+ if (fVerbose > 0) {
+ printf("<AliTRDclusterizerV1::Transform> ");
+ printf("Tail cancellation (nExp = %d) for detector %d.\n",
+ recParam->GetTCnexp(),idet);
+ }
+
+ for (Int_t iRow = 0; iRow < nRowMax; iRow++ ) {
+ for (Int_t iCol = 0; iCol < nColMax; iCol++ ) {
+ for (Int_t iTime = 0; iTime < nTimeTotal; iTime++) {
+ //
+ // add gain
+ //
+ Double_t gain = calibration->GetGainFactor(idet, iCol, iRow);
+ if (gain==0) {
+ AliError("Not a valid gain\n");
+ }
+ 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 (Int_t iTime = 0; iTime < nTimeTotal; iTime++) {
+ // Store the amplitude of the digit if above threshold
+ if (outADC[iTime] > ADCthreshold) {
+ if (fVerbose > 1)
+ {
+ printf(" iRow = %d, iCol = %d, iTime = %d, adc = %f\n"
+ ,iRow,iCol,iTime,outADC[iTime]);
+ }
+ digitsOut->SetDataUnchecked(iRow,iCol,iTime,outADC[iTime]);
+ }
+
+ }
+
+ }
+
+ }
+
+ delete [] inADC;
+ delete [] outADC;
+
+ 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];
+
+ // initialize (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 = 0.100;
+
+ rates[0] = TMath::Exp(-Dt/(R1));
+ rates[1] = TMath::Exp(-Dt/(R2));
+
+ Int_t i, k;
+ Double_t reminder[2];
+ Double_t correction, 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];
+ }
+
+}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff