* provided "as is" without express or implied warranty. *
**************************************************************************/
+#include <iostream.h>
+
+#include <TFile.h>
+#include <TMath.h>
+#include <math.h>
#include "AliITSClusterFinderSDD.h"
+#include "AliITSMapA1.h"
+#include "AliITS.h"
+#include "AliITSdigit.h"
+#include "AliITSRawCluster.h"
+#include "AliITSRecPoint.h"
+#include "AliITSsegmentation.h"
+#include "AliITSresponse.h"
#include "AliRun.h"
(AliITSsegmentation *seg, AliITSresponse *response, TClonesArray *digits, TClonesArray *recp)
{
// constructor
+
fSegmentation=seg;
fResponse=response;
fDigits=digits;
fClusters=recp;
fNclusters= fClusters->GetEntriesFast();
- printf("SDD: fNclusters %d\n",fNclusters);
SetCutAmplitude();
SetDAnode();
SetDTime();
- SetMap();
SetMinPeak();
- SetNCells();
+ SetMinNCells();
+ SetMaxNCells();
+ SetTimeCorr();
+ SetMinCharge();
+ fMap=new AliITSMapA1(fSegmentation,fDigits,fCutAmplitude);
+
}
//_____________________________________________________________________________
fDigits=0;
fClusters=0;
fNclusters=0;
+ fMap=0;
SetCutAmplitude();
SetDAnode();
SetDTime();
- SetMap();
SetMinPeak();
- SetNCells();
+ SetMinNCells();
+ SetMaxNCells();
+ SetTimeCorr();
+ SetMinCharge();
}
+//_____________________________________________________________________________
+AliITSClusterFinderSDD::~AliITSClusterFinderSDD()
+{
+ // destructor
+
+ if(fMap) delete fMap;
+
+}
//__________________________________________________________________________
AliITSClusterFinderSDD::AliITSClusterFinderSDD(const AliITSClusterFinderSDD &source){
// Copy Constructor
this->fCutAmplitude = source.fCutAmplitude ;
this->fDAnode = source.fDAnode ;
this->fDTime = source.fDTime ;
+ this->fTimeCorr = source.fTimeCorr ;
this->fMinPeak = source.fMinPeak ;
this->fMinNCells = source.fMinNCells ;
+ this->fMaxNCells = source.fMaxNCells ;
return;
}
this->fCutAmplitude = source.fCutAmplitude ;
this->fDAnode = source.fDAnode ;
this->fDTime = source.fDTime ;
+ this->fTimeCorr = source.fTimeCorr ;
this->fMinPeak = source.fMinPeak ;
this->fMinNCells = source.fMinNCells ;
+ this->fMaxNCells = source.fMaxNCells ;
return *this;
}
-//_____________________________________________________________________________
-void AliITSClusterFinderSDD::SetMap()
-{
- // set map
- if(!fMap) fMap=new AliITSMapA2(fSegmentation);
-}
-//_____________________________________________________________________________
-void AliITSClusterFinderSDD::FillMap()
-{
- // fCoord1 = anode #
- // fCoord2 = time sample
-
- if (!fDigits) return;
-
- Int_t ndigits = fDigits->GetEntriesFast();
- //printf("FillMap: ndigits %d\n",ndigits);
- if (!ndigits) return;
-
- AliITSdigitSDD *dig;
- Int_t ndig;
- for(ndig=0; ndig<ndigits; ndig++) {
- dig = (AliITSdigitSDD*)fDigits->UncheckedAt(ndig);
- Double_t signal=dig->fSignal;
- //printf("FillMap: ndig fCoord1 fCoord2 signal %d %d %d %f\n",ndig,dig->fCoord1,dig->fCoord2,signal);
- fMap->SetHit(dig->fCoord1,dig->fCoord2,signal);
- }
-
-
-}
//_____________________________________________________________________________
void AliITSClusterFinderSDD::Find1DClusters()
{
// find 1D clusters
- AliITS *iTS=(AliITS*)gAlice->GetModule("ITS");
-
- // retrieve the parameters
- Int_t fNofMaps = fSegmentation->Npz();
- Int_t fMaxNofSamples = fSegmentation->Npx();
- Int_t fNofAnodes = fNofMaps/2;
- Int_t dummy=0;
- Float_t fTimeStep = fSegmentation->Dpx(dummy);
- Float_t fSddLength = fSegmentation->Dx();
- Float_t fDriftSpeed = fResponse->DriftSpeed();
-
- Float_t anodePitch = fSegmentation->Dpz(dummy);
- // map the signal
- FillMap();
-
- // Piergiorgio's code - do not subtract baseline since we start
- // from digits and do not duplicate arrays, i.e. use fMap instead
- // of Float_t fadc[2*fNofAnodes][fMaxNofSamples];
-
+ AliITS *iTS=(AliITS*)gAlice->GetModule("ITS");
+
+ // retrieve the parameters
+ Int_t fNofMaps = fSegmentation->Npz();
+ Int_t fMaxNofSamples = fSegmentation->Npx();
+ Int_t fNofAnodes = fNofMaps/2;
+ Int_t dummy=0;
+ Float_t fTimeStep = fSegmentation->Dpx(dummy);
+ Float_t fSddLength = fSegmentation->Dx();
+ Float_t fDriftSpeed = fResponse->DriftSpeed();
+
+ Float_t anodePitch = fSegmentation->Dpz(dummy);
+ // map the signal
+ fMap->SetThreshold(fCutAmplitude);
+ fMap->FillMap();
+
+ Float_t noise;
+ Float_t baseline;
+ fResponse->GetNoiseParam(noise,baseline);
+
Int_t nofFoundClusters = 0;
- Float_t dfadc[fNofMaps][fMaxNofSamples];
- Float_t fadc, fadc1, fadc2;
+ Int_t i;
+ Float_t **dfadc = new Float_t*[fNofAnodes];
+ for(i=0;i<fNofAnodes;i++) dfadc[i] = new Float_t[fMaxNofSamples];
+ Float_t fadc = 0.;
+ Float_t fadc1 = 0.;
+ Float_t fadc2 = 0.;
Int_t j,k,idx,l,m;
for(j=0;j<2;j++) {
for(k=0;k<fNofAnodes;k++) {
idx = j*fNofAnodes+k;
// signal (fadc) & derivative (dfadc)
+ dfadc[k][255]=0.;
for(l=0; l<fMaxNofSamples; l++) {
fadc2=(Float_t)fMap->GetSignal(idx,l);
- fadc1=(Float_t)fMap->GetSignal(idx,l-1);
+ if(l>0) fadc1=(Float_t)fMap->GetSignal(idx,l-1);
if(l>0) dfadc[k][l-1] = fadc2-fadc1;
} // samples
} // anodes
for(k=0;k<fNofAnodes;k++) {
+ //cout << "Anode: " << k+1 << ", Wing: " << j+1 << endl;
idx = j*fNofAnodes+k;
-
+
Int_t imax = 0;
Int_t imaxd = 0;
Int_t it=0;
while(it <= fMaxNofSamples-3) {
- // cout << "sample: " << it << endl;
imax = it;
imaxd = it;
Float_t fadcmax = 0.;
Float_t dfadcmax = 0.;
Int_t lthrmina = 1;
- // if(it >= 60) lthrmina = 2;
- // if(it >= 100) lthrmina = 3;
- Int_t lthrmint = 2;
- //if(it >= 60) lthrmint = 3;
- //if(it >= 100) lthrmint = 4;
-
- Int_t lthra = 0;
+ Int_t lthrmint = 3;
+
+ Int_t lthra = 1;
Int_t lthrt = 0;
- for(m=0;m<10;m++) {
+
+ for(m=0;m<20;m++) {
Int_t id = it+m;
if(id>=fMaxNofSamples) break;
- fadc=fMap->GetSignal(idx,id);
- if(fadc > fadcmax) {
- fadcmax = fadc;
- if(fadc > fCutAmplitude) { lthra++; lthrt++; }
- imax = id;
+ fadc=(float)fMap->GetSignal(idx,id);
+ if(fadc > fadcmax) { fadcmax = fadc; imax = id;}
+ if(fadc > (float)fCutAmplitude) {
+ lthrt++;
}
+
if(dfadc[k][id] > dfadcmax) {
dfadcmax = dfadc[k][id];
imaxd = id;
}
}
it = imaxd;
- // skip if no signal over threshold
- if(fMap->GetSignal(idx,imax) < fCutAmplitude) {it++; continue;}
-
- if(k>0) {
- if(fMap->GetSignal(idx-1,imax) > fCutAmplitude) lthra++;
- }
- if(k<fNofAnodes-1)
- if(fMap->GetSignal(idx+1,imax) > fCutAmplitude) lthra++;
-
- if(imax>0) {
- if(fMap->GetSignal(idx,imax-1) > fCutAmplitude) lthrt++;
- }
- if(imax<fMaxNofSamples)
- if(fMap->GetSignal(idx,imax+1) > fCutAmplitude) lthrt++;
+
+ if(fMap->TestHit(idx,imax) == kEmpty) {it++; continue;}
// cluster charge
- Int_t tstart = it-1;
+ Int_t tstart = it-2;
+ if(tstart < 0) tstart = 0;
Bool_t ilcl = 0;
if(lthrt >= lthrmint && lthra >= lthrmina) ilcl = 1;
-
+
if(ilcl) {
nofFoundClusters++;
+
Int_t tstop = tstart;
Float_t dfadcmin = 10000.;
- Int_t ij;
- for(ij=0; ij<10; ij++) {
- if(dfadc[k][it+ij] < dfadcmin) {
- tstop = it+ij+1;
+ Int_t ij;
+ for(ij=0; ij<20; ij++) {
+ if(tstart+ij > 255) { tstop = 255; break; }
+ fadc=(float)fMap->GetSignal(idx,tstart+ij);
+ if((dfadc[k][tstart+ij] < dfadcmin) && (fadc > fCutAmplitude)) {
+ tstop = tstart+ij+5;
+ if(tstop > 255) tstop = 255;
dfadcmin = dfadc[k][it+ij];
}
}
Float_t clusterTime = 0.;
Float_t clusterMult = 0.;
Float_t clusterPeakAmplitude = 0.;
- Int_t its;
+ Int_t its,peakpos=-1;
+ Float_t n, baseline;
+ fResponse->GetNoiseParam(n,baseline);
for(its=tstart; its<=tstop; its++) {
- fadc=fMap->GetSignal(idx,its);
+ fadc=(float)fMap->GetSignal(idx,its);
+ if(fadc>baseline)
+ fadc-=baseline;
+ else
+ fadc=0.;
clusterCharge += fadc;
- if(fadc > clusterPeakAmplitude) clusterPeakAmplitude = fadc;
+ // as a matter of fact we should take the peak pos before FFT
+ // to get the list of tracks !!!
+ if(fadc > clusterPeakAmplitude) {
+ clusterPeakAmplitude = fadc;
+ //peakpos=fMap->GetHitIndex(idx,its);
+ Int_t shift=(int)(fTimeCorr/fTimeStep);
+ if(its>shift && its<(fMaxNofSamples-shift)) peakpos=fMap->GetHitIndex(idx,its+shift);
+ else peakpos=fMap->GetHitIndex(idx,its);
+ if(peakpos<0) peakpos=fMap->GetHitIndex(idx,its);
+ }
clusterTime += fadc*its;
- clusterMult++;
+ if(fadc > 0) clusterMult++;
if(its == tstop) {
- clusterTime /= (clusterCharge/fTimeStep); // ns
- clusterCharge *= (fTimeStep/160.); // keV
- if(clusterTime > 58.2) clusterTime -= 58.2; // ns
- /*
- else {
- cout << "Warning: cluster with negative time " << clusterTime << ", peak ampl.: " << clusterPeakAmplitude << ", mult: " << clusterMult << ", charge: " << clusterCharge << endl;
- cout << "Anode: " << k << ", tstart: " << tstart << ", tstop: " << tstop << ", Charge: " << clusterCharge << endl;
- }
- */
- }
+ clusterTime /= (clusterCharge/fTimeStep); // ns
+ if(clusterTime > fTimeCorr) clusterTime -= fTimeCorr; // ns
+ }
}
- // cout << "Anode: " << k << ", tstart: " << tstart << ", tstop: " << tstop << ", Charge: " << clusterCharge << endl;
-
- Float_t clusteranodePath = (0.06 + clusterAnode - fNofAnodes/2)*anodePitch;
+
+ Float_t clusteranodePath = (clusterAnode - fNofAnodes/2)*anodePitch;
Float_t clusterDriftPath = clusterTime*fDriftSpeed;
clusterDriftPath = fSddLength-clusterDriftPath;
- if(clusterCharge < 0.) break;
-
- //printf("wing clusterMult clusterAnode clusterTime %d %f %f %f \n",j+1,clusterMult, clusterAnode, clusterTime);
-
- AliITSRawClusterSDD *clust = new AliITSRawClusterSDD(j+1,clusterAnode,clusterTime,clusterCharge,clusterPeakAmplitude,0.,0.,clusterDriftPath,clusteranodePath,clusterMult);
- //fClusters->Add(point);
- iTS->AddCluster(1,clust);
+ if(clusterCharge <= 0.) break;
+ AliITSRawClusterSDD clust(j+1,clusterAnode,clusterTime,clusterCharge,clusterPeakAmplitude,peakpos,0.,0.,clusterDriftPath,clusteranodePath,clusterMult,0,0,0,0,0,0,0);
+ iTS->AddCluster(1,&clust);
it = tstop;
} // ilcl
} // while (samples)
} // anodes
} // detectors (2)
+
+ //fMap->ClearMap();
+
+ for(i=0;i<fNofAnodes;i++) delete[] dfadc[i];
+ delete [] dfadc;
+
+ return;
+
+}
- Int_t nofClusters = fClusters->GetEntriesFast();
- nofClusters -= fNclusters;
+//_____________________________________________________________________________
- //printf("SDD- Find1Dclust: fNclusters nofClusters %d %d \n",fNclusters, nofClusters);
+void AliITSClusterFinderSDD::Find1DClustersE()
+{
- fMap->ClearMap();
+ AliITS *iTS=(AliITS*)gAlice->GetModule("ITS");
+
+ // retrieve the parameters
+ Int_t fNofMaps = fSegmentation->Npz();
+ Int_t fMaxNofSamples = fSegmentation->Npx();
+ Int_t fNofAnodes = fNofMaps/2;
+ Int_t dummy=0;
+ Float_t fTimeStep = fSegmentation->Dpx( dummy );
+ Float_t fSddLength = fSegmentation->Dx();
+ Float_t fDriftSpeed = fResponse->DriftSpeed();
+ Float_t anodePitch = fSegmentation->Dpz( dummy );
+ Float_t n, baseline;
+ fResponse->GetNoiseParam( n, baseline );
+
+ // map the signal
+ fMap->SetThreshold( fCutAmplitude );
+ fMap->FillMap();
+ Int_t nClu = 0;
+
+// cout << "Search cluster... "<< endl;
+ for( Int_t j=0; j<2; j++ )
+ {
+ for( Int_t k=0; k<fNofAnodes; k++ )
+ {
+ Int_t idx = j*fNofAnodes+k;
+
+ Bool_t On = kFALSE;
+ Int_t start = 0;
+ Int_t nTsteps = 0;
+ Float_t fmax = 0.;
+ Int_t lmax = 0;
+ Float_t charge = 0.;
+ Float_t time = 0.;
+ Float_t anode = k+0.5;
+ Int_t peakpos = -1;
+
+ for( Int_t l=0; l<fMaxNofSamples; l++ )
+ {
+ Float_t fadc = (Float_t)fMap->GetSignal( idx, l );
+ if( fadc > 0.0 )
+ {
+ if( On == kFALSE && l<fMaxNofSamples-4) // star RawCluster (reset var.)
+ {
+ Float_t fadc1 = (Float_t)fMap->GetSignal( idx, l+1 );
+ if( fadc1 < fadc ) continue;
+ start = l;
+ fmax = 0.;
+ lmax = 0;
+ time = 0.;
+ charge = 0.;
+ On = kTRUE;
+ nTsteps = 0;
+ }
+
+ nTsteps++ ;
+ if( fadc > baseline )
+ fadc -= baseline;
+ else
+ fadc=0.;
+
+ charge += fadc;
+ time += fadc*l;
+
+ if( fadc > fmax )
+ {
+ fmax = fadc;
+ lmax = l;
+ Int_t shift = (Int_t)(fTimeCorr/fTimeStep + 0.5);
+ if( l > shift && l < (fMaxNofSamples-shift) )
+ peakpos = fMap->GetHitIndex( idx, l+shift );
+ else
+ peakpos = fMap->GetHitIndex( idx, l );
+ if( peakpos < 0 ) peakpos = fMap->GetHitIndex( idx, l );
+ }
+ }
+ else
+ {
+ if( On == kTRUE )
+ {
+ if( nTsteps > 2 ) // min # of timesteps for a RawCluster
+ {
+ // Found a RawCluster...
+ Int_t stop = l-1;
+ time /= (charge/fTimeStep); // ns
+ // time = lmax*fTimeStep; // ns
+ if( time > fTimeCorr ) time -= fTimeCorr; // ns
+ Float_t anodePath = (anode - fNofAnodes/2)*anodePitch;
+ Float_t DriftPath = time*fDriftSpeed;
+ DriftPath = fSddLength-DriftPath;
+ AliITSRawClusterSDD clust( j+1, anode, time, charge,
+ fmax, peakpos, 0., 0., DriftPath, anodePath, nTsteps
+ , start, stop, start, stop, 1, k, k );
+ iTS->AddCluster( 1, &clust );
+ // clust.PrintInfo();
+ nClu++;
+ }
+ On = kFALSE;
+ }
+ }
+ } // samples
+ } // anodes
+ } // wings
+
+// cout << "# Rawclusters " << nClu << endl;
+ return;
+
+}
+
+//_____________________________________________________________________________
+
+Int_t AliITSClusterFinderSDD::SearchPeak( Float_t *spect, Int_t xdim, Int_t zdim,
+ Int_t *peakX, Int_t *peakZ, Float_t *peakAmp, Float_t minpeak )
+{
+ Int_t npeak = 0; // # peaks
+ Int_t i,j;
+
+ // search peaks
+ for( Int_t z=1; z<zdim-1; z++ )
+ {
+ for( Int_t x=2; x<xdim-3; x++ )
+ {
+ Float_t Sxz = spect[x*zdim+z];
+ Float_t Sxz1 = spect[(x+1)*zdim+z];
+ Float_t Sxz2 = spect[(x-1)*zdim+z];
+
+ // search a local max. in s[x,z]
+ if( Sxz < minpeak || Sxz1 <= 0 || Sxz2 <= 0 ) continue;
+ if( Sxz >= spect[(x+1)*zdim+z ] && Sxz >= spect[(x-1)*zdim+z ] &&
+ Sxz >= spect[x*zdim +z+1] && Sxz >= spect[x*zdim +z-1] &&
+ Sxz >= spect[(x+1)*zdim+z+1] && Sxz >= spect[(x+1)*zdim+z-1] &&
+ Sxz >= spect[(x-1)*zdim+z+1] && Sxz >= spect[(x-1)*zdim+z-1] )
+ {
+ // peak found
+ peakX[npeak] = x;
+ peakZ[npeak] = z;
+ peakAmp[npeak] = Sxz;
+ npeak++;
+ }
+ }
+ }
+
+ // search groups of peaks with same amplitude.
+ Int_t *Flag = new Int_t[npeak];
+ for( i=0; i<npeak; i++ ) Flag[i] = 0;
+ for( i=0; i<npeak; i++ )
+ {
+ for( j=0; j<npeak; j++ )
+ {
+ if( i==j) continue;
+ if( Flag[j] > 0 ) continue;
+ if( peakAmp[i] == peakAmp[j] && TMath::Abs(peakX[i]-peakX[j])<=1 && TMath::Abs(peakZ[i]-peakZ[j])<=1 )
+ {
+ if( Flag[i] == 0) Flag[i] = i+1;
+ Flag[j] = Flag[i];
+ }
+ }
+ }
+ // make average of peak groups
+ for( i=0; i<npeak; i++ )
+ {
+ Int_t nFlag = 1;
+ if( Flag[i] <= 0 ) continue;
+ for( j=0; j<npeak; j++ )
+ {
+ if( i==j ) continue;
+ if( Flag[j] != Flag[i] ) continue;
+ peakX[i] += peakX[j];
+ peakZ[i] += peakZ[j];
+ nFlag++;
+ npeak--;
+ for( Int_t k=j; k<npeak; k++ )
+ {
+ peakX[k] = peakX[k+1];
+ peakZ[k] = peakZ[k+1];
+ peakAmp[k] = peakAmp[k+1];
+ Flag[k] = Flag[k+1];
+ }
+ j--;
+ }
+
+ if( nFlag > 1 )
+ {
+ peakX[i] /= nFlag;
+ peakZ[i] /= nFlag;
+ }
+ }
+
+ delete [] Flag;
+ return( npeak );
+}
+
+
+void AliITSClusterFinderSDD::PeakFunc( Int_t xdim, Int_t zdim, Float_t *par, Float_t *spe, Float_t *Integral)
+{
+ Int_t Electronics = fResponse->Electronics(); // 1 = PASCAL, 2 = OLA
+ Int_t param_peak = 5;
+ // par -> paramiters..
+ // par[0] number of peaks.
+ // for each peak i=1, ..., par[0]
+ // par[i] = Ampl.
+ // par[i+1] = xpos
+ // par[i+2] = zpos
+ // par[i+3] = tau
+ // par[i+4] = sigma.
+ Int_t npeak = (Int_t)par[0];
+
+ memset( spe, 0, sizeof( Float_t )*zdim*xdim );
+
+ Int_t k = 1;
+ for( Int_t i=0; i<npeak; i++ )
+ {
+ if( Integral != 0 ) Integral[i] = 0.;
+ Float_t sigmaA2 = par[k+4]*par[k+4]*2.;
+ Float_t T2 = par[k+3]; //PASCAL
+ if(Electronics == 2) { T2 *= T2; T2 *= 2; } // OLA
+ for( Int_t z=0; z<zdim; z++ ) {
+ for( Int_t x=0; x<xdim; x++ ) {
+ Float_t z2 = (z-par[k+2])*(z-par[k+2])/sigmaA2;
+ Float_t x2 = 0.;
+ if(Electronics == 1) // PASCAL
+ x2 = (x-par[k+1]+T2)/T2;
+ else if(Electronics == 2) //OLA
+ x2 = (x-par[k+1])*(x-par[k+1])/T2;
+ else
+ cout << "Wrong Electronics" << endl;
+ // Float_t signal = (x2 > 0.) ? par[k] * x2*x2 * exp( -2*x2+2. - z2 ) : 0.0; // RCCR
+ Float_t signal = 0.;
+ if(Electronics == 1)
+ signal = (x2 > 0.) ? par[k] * x2 * exp( -x2+1. - z2 ) : 0.0;
+ else if(Electronics == 2) //OLA
+ signal = par[k] * exp( -x2 - z2 );
+ else
+ cout << "Wrong Electronics" << endl;
+
+ spe[x*zdim+z] += signal;
+ if( Integral != 0 ) Integral[i] += signal;
+ }
+ }
+ k += param_peak;
+ }
return;
+}
+
+
+/*
+void AliITSClusterFinderSDD::PeakFunc( Int_t xdim, Int_t zdim, Float_t *par, Float_t *spe, Float_t *Integral=0 )
+{
+ Int_t param_peak = 5;
+// par -> paramiters..
+// par[0] number of peaks.
+// for each peak i=1, ..., par[0]
+// par[i] = Ampl.
+// par[i+1] = xpos
+// par[i+2] = zpos
+// par[i+3] = tau
+// par[i+4] = sigma.
+ Int_t npeak = (Int_t)par[0];
+
+ memset( spe, 0, sizeof( Float_t )*zdim*xdim );
+
+ Int_t k = 1;
+ for( Int_t i=0; i<npeak; i++ )
+ {
+ if( Integral != 0 ) Integral[i] = 0.;
+ Float_t sigmaA2 = par[k+4]*par[k+4]*2.;
+ Float_t T2 = par[k+3]*par[k+3]*2.;
+ for( Int_t z=0; z<zdim; z++ )
+ {
+ for( Int_t x=0; x<xdim; x++ )
+ {
+ Float_t z2 = (z-par[k+2])*(z-par[k+2])/sigmaA2;
+ Float_t x2 = (x-par[k+1])*(x-par[k+1])/T2;
+ Float_t signal = par[k] * exp( -x2 - z2 );
+ spe[x*zdim+z] += signal;
+ if( Integral != 0 ) Integral[i] += signal;
+ }
+ }
+ k += param_peak;
+ }
+ return;
+}
+*/
+
+Float_t AliITSClusterFinderSDD::chisq( Int_t xdim, Int_t zdim, Float_t *spe, Float_t *speFit )
+{
+ // EVALUATES UNNORMALIZED CHI-SQUARED
+
+ Float_t chi2 = 0.;
+ for( Int_t z=0; z<zdim; z++ )
+ {
+ for( Int_t x=1; x<xdim-1; x++ )
+ {
+ Int_t index = x*zdim+z;
+ Float_t tmp = spe[index] - speFit[index];
+ chi2 += tmp*tmp;
+ }
+ }
+ return( chi2 );
+}
+
+
+void AliITSClusterFinderSDD::minim( Int_t xdim, Int_t zdim, Float_t *param, Float_t *prm0, Float_t *steprm, Float_t *chisqr,
+ Float_t *spe, Float_t *speFit )
+{
+ Int_t k, nnn, mmm, i;
+ Float_t p1, delta, d1, chisq1, p2, chisq2, t, p3, chisq3, a, b, p0, chisqt;
+
+ Int_t param_peak = 5;
+ Int_t npeak = (Int_t)param[0];
+ for( k=1; k<(npeak*param_peak+1); k++ ) prm0[k] = param[k];
+
+ for( k=1; k<(npeak*param_peak+1); k++ )
+ {
+ p1 = param[k];
+ delta = steprm[k];
+ d1 = delta;
+
+ // ENSURE THAT STEP SIZE IS SENSIBLY LARGER THAN MACHINE ROUND OFF
+ if( fabs( p1 ) > 1.0E-6 )
+ if ( fabs( delta/p1 ) < 1.0E-4 ) delta = p1/1000;
+ else delta = (Float_t)1.0E-4;
+
+ // EVALUATE CHI-SQUARED AT FIRST TWO SEARCH POINTS
+ PeakFunc( xdim, zdim, param, speFit );
+ chisq1 = chisq( xdim, zdim, spe, speFit );
+
+ p2 = p1+delta;
+ param[k] = p2;
+
+ PeakFunc( xdim, zdim, param, speFit );
+ chisq2 = chisq( xdim, zdim, spe, speFit );
+
+ if( chisq1 < chisq2 )
+ {
+ // REVERSE DIRECTION OF SEARCH IF CHI-SQUARED IS INCREASING
+ delta = -delta;
+ t = p1;
+ p1 = p2;
+ p2 = t;
+ t = chisq1;
+ chisq1 = chisq2;
+ chisq2 = t;
+ }
+
+ i = 1; nnn = 0;
+ do { // INCREMENT param(K) UNTIL CHI-SQUARED STARTS TO INCREASE
+ nnn++;
+ p3 = p2 + delta;
+ mmm = nnn - (nnn/5)*5; // multiplo de 5
+ if( mmm == 0 )
+ {
+ d1 = delta;
+ // INCREASE STEP SIZE IF STEPPING TOWARDS MINIMUM IS TOO SLOW
+ delta *= 5;
+ }
+ param[k] = p3;
+
+ // Constrain paramiters
+ Int_t kpos = (k-1) % param_peak;
+ switch( kpos )
+ {
+ case 0 :
+ if( param[k] <= 20 ) param[k] = fMinPeak;
+ case 1 :
+ if( fabs( param[k] - prm0[k] ) > 1.5 ) param[k] = prm0[k];
+ case 2 :
+ if( fabs( param[k] - prm0[k] ) > 1. ) param[k] = prm0[k];
+ case 3 :
+ if( param[k] < .5 ) param[k] = .5;
+ case 4 :
+ if( param[k] < .288 ) param[k] = .288; // 1/sqrt(12) = 0.288
+ };
+
+ PeakFunc( xdim, zdim, param, speFit );
+ chisq3 = chisq( xdim, zdim, spe, speFit );
+
+ if( chisq3 < chisq2 && nnn < 50 )
+ {
+ p1 = p2;
+ p2 = p3;
+ chisq1 = chisq2;
+ chisq2 = chisq3;
+ }
+ else i=0;
+
+ } while( i );
+
+ // FIND MINIMUM OF PARABOLA DEFINED BY LAST THREE POINTS
+ a = chisq1*(p2-p3)+chisq2*(p3-p1)+chisq3*(p1-p2);
+ b = chisq1*(p2*p2-p3*p3)+chisq2*(p3*p3-p1*p1)+chisq3*(p1*p1-p2*p2);
+ if( a!=0 ) p0 = (Float_t)(0.5*b/a);
+ else p0 = 10000;
+
+ //---IN CASE OF NEARLY EQUAL CHI-SQUARED AND TOO SMALL STEP SIZE PREVENT
+ // ERRONEOUS EVALUATION OF PARABOLA MINIMUM
+ //---NEXT TWO LINES CAN BE OMITTED FOR HIGHER PRECISION MACHINES
+
+ //dp = (Float_t) max (fabs(p3-p2), fabs(p2-p1));
+ //if( fabs( p2-p0 ) > dp ) p0 = p2;
+ param[k] = p0;
+
+ // Constrain paramiters
+ Int_t kpos = (k-1) % param_peak;
+ switch( kpos )
+ {
+ case 0 :
+ if( param[k] <= 20 ) param[k] = fMinPeak;
+ case 1 :
+ if( fabs( param[k] - prm0[k] ) > 1.5 ) param[k] = prm0[k];
+ case 2 :
+ if( fabs( param[k] - prm0[k] ) > 1. ) param[k] = prm0[k];
+ case 3 :
+ if( param[k] < .5 ) param[k] = .5;
+ case 4 :
+ if( param[k] < .288 ) param[k] = .288; // 1/sqrt(12) = 0.288
+ };
+
+ PeakFunc( xdim, zdim, param, speFit );
+ chisqt = chisq( xdim, zdim, spe, speFit );
+
+ // DO NOT ALLOW ERRONEOUS INTERPOLATION
+ if( chisqt <= *chisqr )
+ *chisqr = chisqt;
+ else
+ param[k] = prm0[k];
+
+ // OPTIMIZE SEARCH STEP FOR EVENTUAL NEXT CALL OF MINIM
+ steprm[k] = (param[k]-prm0[k])/5;
+ if( steprm[k] >= d1 ) steprm[k] = d1/5;
+ }
+ // EVALUATE FIT AND CHI-SQUARED FOR OPTIMIZED PARAMETERS
+ PeakFunc( xdim, zdim, param, speFit );
+ *chisqr = chisq( xdim, zdim, spe, speFit );
+ return;
}
+Int_t AliITSClusterFinderSDD::noLinearFit( Int_t xdim, Int_t zdim, Float_t *param, Float_t *spe, Int_t *niter, Float_t *chir )
+{
+ const Float_t chilmt = 0.01; // relative accuracy
+ const Int_t nel = 3; // for parabolic minimization
+ const Int_t nstop = 50; // Max. iteration number
+ const Int_t param_peak = 5;
+
+ Int_t npeak = (Int_t)param[0];
+
+ // RETURN IF NUMBER OF DEGREES OF FREEDOM IS NOT POSITIVE
+ if( (xdim*zdim - npeak*param_peak) <= 0 ) return( -1 );
+ Float_t deg_free = (xdim*zdim - npeak*param_peak)-1;
+
+ Int_t n, k, iter_num = 0;
+ Float_t *prm0 = new Float_t[npeak*param_peak+1];
+ Float_t *step = new Float_t[npeak*param_peak+1];
+ Float_t *schi = new Float_t[npeak*param_peak+1];
+ Float_t *sprm[3];
+ sprm[0] = new Float_t[npeak*param_peak+1];
+ sprm[1] = new Float_t[npeak*param_peak+1];
+ sprm[2] = new Float_t[npeak*param_peak+1];
+
+ Float_t chi0, chi1, reldif, a, b, prmin, dp;
+
+ Float_t *speFit = new Float_t[ xdim*zdim ];
+ PeakFunc( xdim, zdim, param, speFit );
+ chi0 = chisq( xdim, zdim, spe, speFit );
+ chi1 = chi0;
+
+
+ for( k=1; k<(npeak*param_peak+1); k++) prm0[k] = param[k];
+
+ for( k=1 ; k<(npeak*param_peak+1); k+=param_peak )
+ {
+ step[k] = param[k] / 20.0 ;
+ step[k+1] = param[k+1] / 50.0;
+ step[k+2] = param[k+2] / 50.0;
+ step[k+3] = param[k+3] / 20.0;
+ step[k+4] = param[k+4] / 20.0;
+ }
+
+ Int_t out = 0;
+ do
+ {
+ iter_num++;
+ chi0 = chi1;
+
+ minim( xdim, zdim, param, prm0, step, &chi1, spe, speFit );
+ reldif = ( chi1 > 0 ) ? ((Float_t) fabs( chi1-chi0)/chi1 ) : 0;
+
+ // EXIT conditions
+ if( reldif < (float) chilmt )
+ {
+ *chir = (chi1>0) ? (float) TMath::Sqrt (chi1/deg_free) :0;
+ *niter = iter_num;
+ out = 0;
+ break;
+ }
+
+ if( (reldif < (float)(5*chilmt)) && (iter_num > nstop) )
+ {
+ *chir = (chi1>0) ?(float) TMath::Sqrt (chi1/deg_free):0;
+ *niter = iter_num;
+ out = 0;
+ break;
+ }
+
+ if( iter_num > 5*nstop )
+ {
+ *chir = (chi1>0) ?(float) TMath::Sqrt (chi1/deg_free):0;
+ *niter = iter_num;
+ out = 1;
+ break;
+ }
+
+ if( iter_num <= nel ) continue;
+
+ n = iter_num - (iter_num/nel)*nel; // EXTRAPOLATION LIMIT COUNTER N
+ if( n > 3 || n == 0 ) continue;
+ schi[n-1] = chi1;
+ for( k=1; k<(npeak*param_peak+1); k++ ) sprm[n-1][k] = param[k];
+ if( n != 3 ) continue;
+
+ // -EVALUATE EXTRAPOLATED VALUE OF EACH PARAMETER BY FINDING MINIMUM OF
+ // PARABOLA DEFINED BY LAST THREE CALLS OF MINIM
+
+ for( k=1; k<(npeak*param_peak+1); k++ )
+ {
+ Float_t tmp0 = sprm[0][k];
+ Float_t tmp1 = sprm[1][k];
+ Float_t tmp2 = sprm[2][k];
+ a = schi[0]*(tmp1-tmp2) + schi[1]*(tmp2-tmp0);
+ a += (schi[2]*(tmp0-tmp1));
+ b = schi[0]*(tmp1*tmp1-tmp2*tmp2);
+ b += (schi[1]*(tmp2*tmp2-tmp0*tmp0)+(schi[2]*(tmp0*tmp0-tmp1*tmp1)));
+ if ((double)a < 1.0E-6) prmin = 0;
+ else prmin = (float) (0.5*b/a);
+ dp = 5*(tmp2-tmp0);
+
+ if (fabs(prmin-tmp2) > fabs(dp)) prmin = tmp2+dp;
+ param[k] = prmin;
+ step[k] = dp/10; // OPTIMIZE SEARCH STEP
+ }
+
+ } while( kTRUE );
+
+ delete [] prm0;
+ delete [] step;
+ delete [] schi;
+ delete [] sprm[0];
+ delete [] sprm[1];
+ delete [] sprm[2];
+ delete [] speFit;
+
+ return( out );
+}
+//_____________________________________________________________________________
+void AliITSClusterFinderSDD::ResolveClustersE()
+{
+ // The function to resolve clusters if the clusters overlapping exists
+
+ Int_t i;
+
+ AliITS *iTS = (AliITS*)gAlice->GetModule( "ITS" );
+ // get number of clusters for this module
+ Int_t nofClusters = fClusters->GetEntriesFast();
+ nofClusters -= fNclusters;
+
+ Int_t fNofMaps = fSegmentation->Npz();
+ Int_t fNofAnodes = fNofMaps/2;
+ Int_t fMaxNofSamples = fSegmentation->Npx();
+ Int_t dummy=0;
+ Double_t fTimeStep = fSegmentation->Dpx( dummy );
+ Double_t fSddLength = fSegmentation->Dx();
+ Double_t fDriftSpeed = fResponse->DriftSpeed();
+ Double_t anodePitch = fSegmentation->Dpz( dummy );
+ Float_t n, baseline;
+ fResponse->GetNoiseParam( n, baseline );
+ Int_t Electronics = fResponse->Electronics(); // 1 = PASCAL, 2 = OLA
+
+ // fill Map of signals
+ fMap->FillMap();
+
+ for( Int_t j=0; j<nofClusters; j++ )
+ {
+ // get cluster information
+ AliITSRawClusterSDD *clusterJ = (AliITSRawClusterSDD*) fClusters->At( j );
+ Int_t astart = clusterJ->Astart();
+ Int_t astop = clusterJ->Astop();
+ Int_t tstart = clusterJ->Tstartf();
+ Int_t tstop = clusterJ->Tstopf();
+ Int_t wing = (Int_t)clusterJ->W();
+ if( wing == 2 )
+ {
+ astart += fNofAnodes;
+ astop += fNofAnodes;
+ }
+ Int_t xdim = tstop-tstart+3;
+ Int_t zdim = astop-astart+3;
+ Float_t *sp = new Float_t[ xdim*zdim+1 ];
+ memset( sp, 0, sizeof(Float_t)*(xdim*zdim+1) );
+
+ // make a local map from cluster region
+ for( Int_t ianode=astart; ianode<=astop; ianode++ )
+ {
+ for( Int_t itime=tstart; itime<=tstop; itime++ )
+ {
+ Float_t fadc = fMap->GetSignal( ianode, itime );
+ if( fadc > baseline ) fadc -= (Double_t)baseline;
+ else fadc = 0.;
+ Int_t index = (itime-tstart+1)*zdim+(ianode-astart+1);
+ sp[index] = fadc;
+ } // time loop
+ } // anode loop
+
+ // search peaks on cluster
+ const Int_t np = 150;
+ Int_t peakX1[np];
+ Int_t peakZ1[np];
+ Float_t peakAmp1[np];
+ Int_t npeak = SearchPeak( sp, xdim, zdim, peakX1, peakZ1, peakAmp1, fMinPeak );
+
+ // if multiple peaks, split cluster
+ if( npeak >= 1 )
+ {
+ // cout << "npeak " << npeak << endl;
+ // clusterJ->PrintInfo();
+
+ Float_t *par = new Float_t[npeak*5+1];
+ par[0] = (Float_t)npeak;
+
+ // Initial paramiters in cell dimentions
+ Int_t k1 = 1;
+ for( i=0; i<npeak; i++ ) {
+ par[k1] = peakAmp1[i];
+ par[k1+1] = peakX1[i]; // local time pos. [timebin]
+ par[k1+2] = peakZ1[i]; // local anode pos. [anodepitch]
+ if(Electronics == 1)
+ par[k1+3] = 2.; // PASCAL
+ else if(Electronics == 2)
+ par[k1+3] = 0.7; // tau [timebin] OLA
+ par[k1+4] = .4; // sigma [anodepich]
+ k1+=5;
+ }
+ Int_t niter;
+ Float_t chir;
+ noLinearFit( xdim, zdim, par, sp, &niter, &chir );
+
+ Float_t peakX[np];
+ Float_t peakZ[np];
+ Float_t sigma[np];
+ Float_t tau[np];
+ Float_t peakAmp[np];
+ Float_t Integral[np];
+
+ //get integrals => charge for each peak
+ PeakFunc( xdim, zdim, par, sp, Integral );
+
+ k1 = 1;
+ for( i=0; i<npeak; i++ )
+ {
+ peakAmp[i] = par[k1];
+ peakX[i] = par[k1+1];
+ peakZ[i] = par[k1+2];
+ tau[i] = par[k1+3];
+ sigma[i] = par[k1+4];
+ k1+=5;
+ }
+
+ // calculate paramiter for new clusters
+ for( i=0; i<npeak; i++ )
+ {
+ AliITSRawClusterSDD clusterI( *clusterJ );
+ Int_t newAnode = peakZ1[i]-1 + astart;
+ Int_t newiTime = peakX1[i]-1 + tstart;
+
+ Int_t shift = (Int_t)(fTimeCorr/fTimeStep + 0.5);
+ if( newiTime > shift && newiTime < (fMaxNofSamples-shift) ) shift = 0;
+ Int_t peakpos = fMap->GetHitIndex( newAnode, newiTime+shift );
+ clusterI.SetPeakPos( peakpos );
+ clusterI.SetPeakAmpl( peakAmp1[i] );
+
+ Float_t newAnodef = peakZ[i] - 0.5 + astart;
+ Float_t newiTimef = peakX[i] - 1 + tstart;
+ if( wing == 2 ) newAnodef -= fNofAnodes;
+ Float_t AnodePath = (newAnodef - fNofAnodes/2)*anodePitch;
+ newiTimef *= fTimeStep;
+ if( newiTimef > fTimeCorr ) newiTimef -= fTimeCorr;
+ if(Electronics == 1) {
+ newiTimef *= 0.999438; // PASCAL
+ newiTimef += (6./fDriftSpeed - newiTimef/3000.);
+ }
+ else if(Electronics == 2)
+ newiTimef *= 0.99714; // OLA
+
+ Float_t DriftPath = fSddLength - newiTimef * fDriftSpeed;
+ Float_t sign = ( wing == 1 ) ? -1. : 1.;
+ clusterI.SetX( DriftPath*sign * 0.0001 );
+ clusterI.SetZ( AnodePath * 0.0001 );
+ clusterI.SetAnode( newAnodef );
+ clusterI.SetTime( newiTimef );
+ clusterI.SetAsigma( sigma[i]*anodePitch );
+ clusterI.SetTsigma( tau[i]*fTimeStep );
+ clusterI.SetQ( Integral[i] );
+
+ // clusterI.PrintInfo();
+ iTS->AddCluster( 1, &clusterI );
+ }
+ fClusters->RemoveAt( j );
+ delete [] par;
+ }
+ else cout <<" --- Peak not found!!!! minpeak=" << fMinPeak<<
+ " cluster peak=" << clusterJ->PeakAmpl() << endl << endl;
+
+ delete [] sp;
+ } // cluster loop
+
+ fClusters->Compress();
+ fMap->ClearMap();
+}
+
+
//_____________________________________________________________________________
void AliITSClusterFinderSDD::GroupClusters()
{
Int_t nofClusters = fClusters->GetEntriesFast();
nofClusters -= fNclusters;
- //printf("SDD- GroupClusters: fNclusters nofClusters %d %d \n",fNclusters, nofClusters);
-
AliITSRawClusterSDD *clusterI;
AliITSRawClusterSDD *clusterJ;
- Int_t label[nofClusters];
+ Int_t *label = new Int_t [nofClusters];
Int_t i,j;
for(i=0; i<nofClusters; i++) label[i] = 0;
for(i=0; i<nofClusters; i++) {
clusterI = (AliITSRawClusterSDD*) fClusters->At(i);
clusterJ = (AliITSRawClusterSDD*) fClusters->At(j);
// 1.3 good
- if(clusterI->T() < fTimeStep*60) fDAnode = 3.2;
- if(clusterI->T() < fTimeStep*10) fDAnode = 1.2;
+ if(clusterI->T() < fTimeStep*60) fDAnode = 4.2; // TB 3.2
+ if(clusterI->T() < fTimeStep*10) fDAnode = 1.5; // TB 1.
Bool_t pair = clusterI->Brother(clusterJ,fDAnode,fDTime);
if(!pair) continue;
- // clusterI->Print();
- // clusterJ->Print();
+ // clusterI->PrintInfo();
+ // clusterJ->PrintInfo();
clusterI->Add(clusterJ);
label[j] = 1;
fClusters->RemoveAt(j);
+ j=i; // <- Ernesto
} // J clusters
label[i] = 1;
} // I clusters
fClusters->Compress();
+
+ delete [] label;
return;
}
Int_t nofClusters = fClusters->GetEntriesFast();
nofClusters -= fNclusters;
- //printf("SDD- SelectClusters: fNclusters nofClusters %d %d \n",fNclusters, nofClusters);
-
Int_t i;
for(i=0; i<nofClusters; i++) {
AliITSRawClusterSDD *clusterI = (AliITSRawClusterSDD*) fClusters->At(i);
if(clusterI->Anodes() != 0.) {
wy = ((Float_t) clusterI->Samples())/clusterI->Anodes();
}
- Float_t amp = clusterI->PeakAmpl();
+ Int_t amp = (Int_t) clusterI->PeakAmpl();
+ Int_t cha = (Int_t) clusterI->Q();
if(amp < fMinPeak) rmflg = 1;
+ if(cha < fMinCharge) rmflg = 1;
if(wy < fMinNCells) rmflg = 1;
+ //if(wy > fMaxNCells) rmflg = 1;
if(rmflg) fClusters->RemoveAt(i);
} // I clusters
fClusters->Compress();
}
+//_____________________________________________________________________________
+
+void AliITSClusterFinderSDD::ResolveClusters()
+{
+
+// The function to resolve clusters if the clusters overlapping exists
+
+ AliITS *iTS=(AliITS*)gAlice->GetModule("ITS");
+
+ // get number of clusters for this module
+ Int_t nofClusters = fClusters->GetEntriesFast();
+ nofClusters -= fNclusters;
+ // cout<<"Resolve Cl: nofClusters, fNclusters ="<<nofClusters<<","<<fNclusters<<endl;
+
+ Int_t fNofMaps = fSegmentation->Npz();
+ Int_t fNofAnodes = fNofMaps/2;
+ Int_t dummy=0;
+ Double_t fTimeStep = fSegmentation->Dpx(dummy);
+ Double_t fSddLength = fSegmentation->Dx();
+ Double_t fDriftSpeed = fResponse->DriftSpeed();
+ Double_t anodePitch = fSegmentation->Dpz(dummy);
+ Float_t n, baseline;
+ fResponse->GetNoiseParam(n,baseline);
+ Float_t dzz_1A = anodePitch * anodePitch / 12;
+
+ // fill Map of signals
+ fMap->FillMap();
+
+ Int_t j,i,ii,ianode,anode,itime;
+ Int_t wing,astart,astop,tstart,tstop,nanode;
+ Double_t fadc,ClusterTime;
+ Double_t q[400],x[400],z[400]; // digit charges and coordinates
+
+ for(j=0; j<nofClusters; j++) {
+
+ AliITSRawClusterSDD *clusterJ = (AliITSRawClusterSDD*) fClusters->At(j);
+
+ Int_t ndigits = 0;
+ astart=clusterJ->Astart();
+ astop=clusterJ->Astop();
+ tstart=clusterJ->Tstartf();
+ tstop=clusterJ->Tstopf();
+ nanode=clusterJ->Anodes(); // <- Ernesto
+ wing=(Int_t)clusterJ->W();
+ if(wing == 2) {
+ astart += fNofAnodes;
+ astop += fNofAnodes;
+ }
+
+// cout<<"astart,astop,tstart,tstop ="<<astart<<","<<astop<<","<<tstart<<","<<tstop<<endl;
+
+ // clear the digit arrays
+ for(ii=0; ii<400; ii++) {
+ q[ii] = 0.;
+ x[ii] = 0.;
+ z[ii] = 0.;
+ }
+
+ for(ianode=astart; ianode<=astop; ianode++) {
+ for(itime=tstart; itime<=tstop; itime++) {
+ fadc=fMap->GetSignal(ianode,itime);
+ if(fadc>baseline) {
+ fadc-=(Double_t)baseline;
+ q[ndigits] = fadc*(fTimeStep/160); // KeV
+ anode = ianode;
+ if(wing == 2) anode -= fNofAnodes;
+ z[ndigits] = (anode + 0.5 - fNofAnodes/2)*anodePitch;
+ ClusterTime = itime*fTimeStep;
+ if(ClusterTime > fTimeCorr) ClusterTime -= fTimeCorr; // ns
+ x[ndigits] = fSddLength - ClusterTime*fDriftSpeed;
+ if(wing == 1) x[ndigits] *= (-1);
+// cout<<"ianode,itime,fadc ="<<ianode<<","<<itime<<","<<fadc<<endl;
+// cout<<"wing,anode,ndigits,charge ="<<wing<<","<<anode<<","<<ndigits<<","<<q[ndigits]<<endl;
+ ndigits++;
+ continue;
+ }
+ fadc=0;
+ // cout<<"fadc=0, ndigits ="<<ndigits<<endl;
+ } // time loop
+ } // anode loop
+ // cout<<"for new cluster ndigits ="<<ndigits<<endl;
+
+
+ // Fit cluster to resolve for two separate ones --------------------
+
+ Double_t qq=0., xm=0., zm=0., xx=0., zz=0., xz=0.;
+ Double_t dxx=0., dzz=0., dxz=0.;
+ Double_t scl = 0., tmp, tga, elps = -1.;
+ Double_t xfit[2], zfit[2], qfit[2];
+ Double_t pitchz = anodePitch*1.e-4; // cm
+ Double_t pitchx = fTimeStep*fDriftSpeed*1.e-4; // cm
+ Double_t sigma2;
+ Int_t nfhits;
+ Int_t nbins = ndigits;
+ Int_t separate = 0;
+
+ // now, all lengths are in microns
+
+ for (ii=0; ii<nbins; ii++) {
+ qq += q[ii];
+ xm += x[ii]*q[ii];
+ zm += z[ii]*q[ii];
+ xx += x[ii]*x[ii]*q[ii];
+ zz += z[ii]*z[ii]*q[ii];
+ xz += x[ii]*z[ii]*q[ii];
+ }
+
+ xm /= qq;
+ zm /= qq;
+ xx /= qq;
+ zz /= qq;
+ xz /= qq;
+
+ dxx = xx - xm*xm;
+ dzz = zz - zm*zm;
+ dxz = xz - xm*zm;
+
+ // shrink the cluster in the time direction proportionaly to the
+ // dxx/dzz, which lineary depends from the drift path
+
+ // new Ernesto........
+ if( nanode == 1 )
+ {
+ dzz = dzz_1A; // for one anode cluster dzz = anode**2/12
+ scl = TMath::Sqrt( 7.2/(-0.57*xm*1.e-3+71.8) );
+ }
+ if( nanode == 2 )
+ {
+ scl = TMath::Sqrt( (-0.18*xm*1.e-3+21.3)/(-0.57*xm*1.e-3+71.8) );
+ }
+
+ if( nanode == 3 )
+ {
+ scl = TMath::Sqrt( (-0.5*xm*1.e-3+34.5)/(-0.57*xm*1.e-3+71.8) );
+ }
+
+ if( nanode > 3 )
+ {
+ scl = TMath::Sqrt( (1.3*xm*1.e-3+49.)/(-0.57*xm*1.e-3+71.8) );
+ }
+
+ // cout<<"1 microns: zm,dzz,xm,dxx,dxz,qq ="<<zm<<","<<dzz<<","<<xm<<","<<dxx<<","<<dxz<<","<<qq<<endl;
+
+ // old Boris.........
+ // tmp=29730. - 585.*fabs(xm/1000.);
+ // scl=TMath::Sqrt(tmp/130000.);
+
+ xm *= scl;
+ xx *= scl*scl;
+ xz *= scl;
+
+
+ dxx = xx - xm*xm;
+// dzz = zz - zm*zm;
+ dxz = xz - xm*zm;
+
+ // cout<<"microns: zm,dzz,xm,dxx,xz,dxz,qq ="<<zm<<","<<dzz<<","<<xm<<","<<dxx<<","<<xz<<","<<dxz<<","<<qq<<endl;
+
+// if(dzz < 7200.) dzz = 7200.; // for one anode cluster dzz = anode**2/12
+
+ if (dxx < 0.) dxx=0.;
+
+ // the data if no cluster overlapping (the coordunates are in cm)
+ nfhits = 1;
+ xfit[0] = xm*1.e-4;
+ zfit[0] = zm*1.e-4;
+ qfit[0] = qq;
+
+// if(nbins < 7) cout<<"**** nbins ="<<nbins<<endl;
+
+ if (nbins >= 7) {
+ if (dxz==0.) tga=0.;
+ else {
+ tmp=0.5*(dzz-dxx)/dxz;
+ tga = (dxz<0.) ? tmp-TMath::Sqrt(tmp*tmp+1) : tmp+TMath::Sqrt(tmp*tmp+1);
+ }
+ elps=(tga*tga*dxx-2*tga*dxz+dzz)/(dxx+2*tga*dxz+tga*tga*dzz);
+
+ // change from microns to cm
+ xm *= 1.e-4;
+ zm *= 1.e-4;
+ zz *= 1.e-8;
+ xx *= 1.e-8;
+ xz *= 1.e-8;
+ dxz *= 1.e-8;
+ dxx *= 1.e-8;
+ dzz *= 1.e-8;
+
+ // cout<<"cm: zm,dzz,xm,dxx,xz,dxz,qq ="<<zm<<","<<dzz<<","<<xm<<","<<dxx<<","<<xz<<","<<dxz<<","<<qq<<endl;
+
+ for (i=0; i<nbins; i++) {
+ x[i] = x[i] *= scl;
+ x[i] = x[i] *= 1.e-4;
+ z[i] = z[i] *= 1.e-4;
+ }
+
+ // cout<<"!!! elps ="<<elps<<endl;
+
+ if (elps < 0.3) { // try to separate hits
+ separate = 1;
+ tmp=atan(tga);
+ Double_t cosa=cos(tmp),sina=sin(tmp);
+ Double_t a1=0., x1=0., xxx=0.;
+ for (i=0; i<nbins; i++) {
+ tmp=x[i]*cosa + z[i]*sina;
+ if (q[i] > a1) {
+ a1=q[i];
+ x1=tmp;
+ }
+ xxx += tmp*tmp*tmp*q[i];
+ }
+ xxx /= qq;
+ Double_t z12=-sina*xm + cosa*zm;
+ sigma2=(sina*sina*xx-2*cosa*sina*xz+cosa*cosa*zz) - z12*z12;
+ xm=cosa*xm + sina*zm;
+ xx=cosa*cosa*xx + 2*cosa*sina*xz + sina*sina*zz;
+ Double_t x2=(xx - xm*x1 - sigma2)/(xm - x1);
+ Double_t r=a1*2*TMath::ACos(-1.)*sigma2/(qq*pitchx*pitchz);
+ for (i=0; i<33; i++) { // solve a system of equations
+ Double_t x1_old=x1, x2_old=x2, r_old=r;
+ Double_t c11=x1-x2;
+ Double_t c12=r;
+ Double_t c13=1-r;
+ Double_t c21=x1*x1 - x2*x2;
+ Double_t c22=2*r*x1;
+ Double_t c23=2*(1-r)*x2;
+ Double_t c31=3*sigma2*(x1-x2) + x1*x1*x1 - x2*x2*x2;
+ Double_t c32=3*r*(sigma2 + x1*x1);
+ Double_t c33=3*(1-r)*(sigma2 + x2*x2);
+ Double_t f1=-(r*x1 + (1-r)*x2 - xm);
+ Double_t f2=-(r*(sigma2 + x1*x1) + (1-r)*(sigma2 + x2*x2) - xx);
+ Double_t f3=-(r*x1*(3*sigma2+x1*x1) + (1-r)*x2*(3*sigma2+x2*x2)-xxx);
+ Double_t d=c11*c22*c33 + c21*c32*c13 + c12*c23*c31 - c31*c22*c13 - c21*c12*c33 - c32*c23*c11;
+ if (d==0.) {
+ cout<<"*********** d=0 ***********\n";
+ break;
+ }
+ Double_t dr=f1*c22*c33 + f2*c32*c13 + c12*c23*f3 -
+ f3*c22*c13 - f2*c12*c33 - c32*c23*f1;
+ Double_t d1=c11*f2*c33 + c21*f3*c13 + f1*c23*c31 -
+ c31*f2*c13 - c21*f1*c33 - f3*c23*c11;
+ Double_t d2=c11*c22*f3 + c21*c32*f1 + c12*f2*c31 -
+ c31*c22*f1 - c21*c12*f3 - c32*f2*c11;
+ r += dr/d;
+ x1 += d1/d;
+ x2 += d2/d;
+
+ if (fabs(x1-x1_old) > 0.0001) continue;
+ if (fabs(x2-x2_old) > 0.0001) continue;
+ if (fabs(r-r_old)/5 > 0.001) continue;
+
+ a1=r*qq*pitchx*pitchz/(2*TMath::ACos(-1.)*sigma2);
+ Double_t a2=a1*(1-r)/r;
+ qfit[0]=a1; xfit[0]=x1*cosa - z12*sina; zfit[0]=x1*sina + z12*cosa;
+ qfit[1]=a2; xfit[1]=x2*cosa - z12*sina; zfit[1]=x2*sina + z12*cosa;
+ nfhits=2;
+ break; // Ok !
+ }
+ if (i==33) cerr<<"No more iterations ! "<<endl;
+ } // end of attempt to separate overlapped clusters
+ } // end of nbins cut
+
+ if(elps < 0.) cout<<" elps=-1 ="<<elps<<endl;
+ if(elps >0. && elps< 0.3 && nfhits == 1) cout<<" small elps, nfh=1 ="<<elps<<","<<nfhits<<endl;
+ if(nfhits == 2) cout<<" nfhits=2 ="<<nfhits<<endl;
+
+ for (i=0; i<nfhits; i++) {
+ xfit[i] *= (1.e+4/scl);
+ if(wing == 1) xfit[i] *= (-1);
+ zfit[i] *= 1.e+4;
+ // cout<<" --------- i,xfiti,zfiti,qfiti ="<<i<<","<<xfit[i]<<","<<zfit[i]<<","<<qfit[i]<<endl;
+ }
+
+ Int_t ncl = nfhits;
+ if(nfhits == 1 && separate == 1) {
+ cout<<"!!!!! no separate"<<endl;
+ ncl = -2;
+ }
+
+ if(nfhits == 2) {
+ cout << "Split cluster: " << endl;
+ clusterJ->PrintInfo();
+ cout << " in: " << endl;
+ for (i=0; i<nfhits; i++) {
+
+ // AliITSRawClusterSDD *clust = new AliITSRawClusterSDD(wing,-1,-1,(Float_t)qfit[i],ncl,0,0,(Float_t)xfit[i],(Float_t)zfit[i],0,0,0,0,tstart,tstop,astart,astop);
+ // AliITSRawClusterSDD *clust = new AliITSRawClusterSDD(wing,-1,-1,(Float_t)qfit[i],0,0,0,(Float_t)xfit[i],(Float_t)zfit[i],0,0,0,0,tstart,tstop,astart,astop,ncl);
+
+ // ???????????
+ // if(wing == 1) xfit[i] *= (-1);
+ Float_t Anode = (zfit[i]/anodePitch+fNofAnodes/2-0.5);
+ Float_t Time = (fSddLength - xfit[i])/fDriftSpeed;
+ Float_t clusterPeakAmplitude = clusterJ->PeakAmpl();
+ Float_t peakpos = clusterJ->PeakPos();
+
+ Float_t clusteranodePath = (Anode - fNofAnodes/2)*anodePitch;
+ Float_t clusterDriftPath = Time*fDriftSpeed;
+ clusterDriftPath = fSddLength-clusterDriftPath;
+
+ AliITSRawClusterSDD *clust = new AliITSRawClusterSDD(wing,Anode,Time,qfit[i],
+ clusterPeakAmplitude,peakpos,0.,0.,clusterDriftPath,clusteranodePath,clusterJ->Samples()/2
+ ,tstart,tstop,0,0,0,astart,astop);
+ clust->PrintInfo();
+ iTS->AddCluster(1,clust);
+ // cout<<"new cluster added: tstart,tstop,astart,astop,x,ncl ="<<tstart<<","<<tstop<<","<<astart<<","<<astop<<","<<xfit[i]<<","<<ncl<<endl;
+ delete clust;
+ }// nfhits loop
+ fClusters->RemoveAt(j);
+
+ } // if nfhits = 2
+ } // cluster loop
+
+ fClusters->Compress();
+ fMap->ClearMap();
+
+ return;
+}
+
+
//_____________________________________________________________________________
void AliITSClusterFinderSDD::GetRecPoints()
{
// get rec points
- //static Int_t counter=0;
AliITS *iTS=(AliITS*)gAlice->GetModule("ITS");
Int_t nofClusters = fClusters->GetEntriesFast();
nofClusters -= fNclusters;
- //printf("SDD- GetRecPoints: fNclusters nofClusters %d %d \n",fNclusters, nofClusters);
-
-// const Float_t kdEdXtoQ = 2.778e+2; // KeV -> number of e-hole pairs in Si
const Float_t kconvGeV = 1.e-6; // GeV -> KeV
const Float_t kconv = 1.0e-4;
const Float_t kRMSx = 38.0*kconv; // microns->cm ITS TDR Table 1.3
const Float_t kRMSz = 28.0*kconv; // microns->cm ITS TDR Table 1.3
+
Int_t i;
+ Int_t ix, iz, idx=-1;
+ AliITSdigitSDD *dig=0;
+ Int_t ndigits=fDigits->GetEntriesFast();
for(i=0; i<nofClusters; i++) {
- AliITSRawClusterSDD *clusterI = (AliITSRawClusterSDD*) fClusters->At(i);
+ AliITSRawClusterSDD *clusterI = (AliITSRawClusterSDD*)fClusters->At(i);
+ if(!clusterI) Error("SDD: GetRecPoints","i clusterI ",i,clusterI);
+ if(clusterI) idx=clusterI->PeakPos();
+ if(idx>ndigits) Error("SDD: GetRecPoints","idx ndigits",idx,ndigits);
+ // try peak neighbours - to be done
+ if(idx && idx <= ndigits) dig = (AliITSdigitSDD*)fDigits->UncheckedAt(idx);
+ if(!dig) {
+ // try cog
+ fSegmentation->GetPadIxz(clusterI->X(),clusterI->Z(),ix,iz);
+ dig = (AliITSdigitSDD*)fMap->GetHit(iz-1,ix-1);
+ // if null try neighbours
+ if (!dig) dig = (AliITSdigitSDD*)fMap->GetHit(iz-1,ix);
+ if (!dig) dig = (AliITSdigitSDD*)fMap->GetHit(iz-1,ix+1);
+ if (!dig) printf("SDD: cannot assign the track number!\n");
+ }
+
AliITSRecPoint rnew;
rnew.SetX(clusterI->X());
rnew.SetZ(clusterI->Z());
rnew.SetQ(clusterI->Q()); // in KeV - should be ADC
- //rnew.SetdEdX((clusterI->Q())/kdEdXtoQ);
rnew.SetdEdX(kconvGeV*clusterI->Q());
rnew.SetSigmaX2(kRMSx*kRMSx);
rnew.SetSigmaZ2(kRMSz*kRMSz);
- rnew.SetProbability(1.);
+ if(dig) rnew.fTracks[0]=dig->fTracks[0];
+ if(dig) rnew.fTracks[1]=dig->fTracks[1];
+ if(dig) rnew.fTracks[2]=dig->fTracks[2];
+ //printf("SDD: i %d track1 track2 track3 %d %d %d x y %f %f\n",i,rnew.fTracks[0],rnew.fTracks[1],rnew.fTracks[2],clusterI->X(),clusterI->Z());
iTS->AddRecPoint(rnew);
- //counter++;
} // I clusters
- //printf("counter %d\n",counter);
+ fMap->ClearMap();
}
//_____________________________________________________________________________
-void AliITSClusterFinderSDD::FindRawClusters()
+void AliITSClusterFinderSDD::FindRawClusters(Int_t mod)
{
// find raw clusters
- Find1DClusters();
+ Find1DClustersE();
GroupClusters();
SelectClusters();
+ ResolveClustersE();
GetRecPoints();
}
+//_____________________________________________________________________________
+void AliITSClusterFinderSDD::Print()
+{
+ // Print SDD cluster finder Parameters
-
-
+ cout << "**************************************************" << endl;
+ cout << " Silicon Drift Detector Cluster Finder Parameters " << endl;
+ cout << "**************************************************" << endl;
+ cout << "Number of Clusters: " << fNclusters << endl;
+ cout << "Anode Tolerance: " << fDAnode << endl;
+ cout << "Time Tolerance: " << fDTime << endl;
+ cout << "Time correction (electronics): " << fTimeCorr << endl;
+ cout << "Cut Amplitude (threshold): " << fCutAmplitude << endl;
+ cout << "Minimum Amplitude: " << fMinPeak << endl;
+ cout << "Minimum Charge: " << fMinCharge << endl;
+ cout << "Minimum number of cells/clusters: " << fMinNCells << endl;
+ cout << "Maximum number of cells/clusters: " << fMaxNCells << endl;
+ cout << "**************************************************" << endl;
+}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff