* about the suitability of this software for any purpose. It is *
* provided "as is" without express or implied warranty. *
**************************************************************************/
+/*
+ $Id$
+ $Log$
+ Revision 1.24 2002/04/24 22:02:31 nilsen
+ New SDigits and Digits routines, and related changes, (including new
+ noise values).
-#include <iostream.h>
+ */
+#include <iostream.h>
#include <TFile.h>
#include <TMath.h>
#include <math.h>
#include "AliITSRawCluster.h"
#include "AliITSRecPoint.h"
#include "AliITSsegmentation.h"
-#include "AliITSresponse.h"
+#include "AliITSresponseSDD.h"
#include "AliRun.h"
-
-
ClassImp(AliITSClusterFinderSDD)
-//----------------------------------------------------------
-AliITSClusterFinderSDD::AliITSClusterFinderSDD
-(AliITSsegmentation *seg, AliITSresponse *response, TClonesArray *digits, TClonesArray *recp)
-{
- // constructor
-
- fSegmentation=seg;
- fResponse=response;
- fDigits=digits;
- fClusters=recp;
- fNclusters= fClusters->GetEntriesFast();
+//______________________________________________________________________
+AliITSClusterFinderSDD::AliITSClusterFinderSDD(AliITSsegmentation *seg,
+ AliITSresponse *response,
+ TClonesArray *digits,
+ TClonesArray *recp){
+ // standard constructor
+
+ fSegmentation = seg;
+ fResponse = response;
+ fDigits = digits;
+ fClusters = recp;
+ fNclusters = fClusters->GetEntriesFast();
SetCutAmplitude();
SetDAnode();
SetDTime();
- SetMinPeak();
+ SetMinPeak((Int_t)(((AliITSresponseSDD*)fResponse)->GetNoiseAfterElectronics()*5));
+ // SetMinPeak();
SetMinNCells();
SetMaxNCells();
SetTimeCorr();
SetMinCharge();
- fMap=new AliITSMapA1(fSegmentation,fDigits,fCutAmplitude);
-
+ fMap = new AliITSMapA1(fSegmentation,fDigits,fCutAmplitude);
}
-
-//_____________________________________________________________________________
-AliITSClusterFinderSDD::AliITSClusterFinderSDD()
-{
- // constructor
- fSegmentation=0;
- fResponse=0;
- fDigits=0;
- fClusters=0;
- fNclusters=0;
- fMap=0;
- SetCutAmplitude();
+//______________________________________________________________________
+AliITSClusterFinderSDD::AliITSClusterFinderSDD(){
+ // default constructor
+
+ fSegmentation = 0;
+ fResponse = 0;
+ fDigits = 0;
+ fClusters = 0;
+ fNclusters = 0;
+ fMap = 0;
+ fCutAmplitude = 0;
+ fDAnode = 0;
+ fDTime = 0;
+ fMinPeak = 0;
+ fMinNCells = 0;
+ fMaxNCells = 0;
+ fTimeCorr = 0;
+ fMinCharge = 0;
+ /*
SetDAnode();
SetDTime();
- SetMinPeak();
+ SetMinPeak((Int_t)(((AliITSresponseSDD*)fResponse)->GetNoiseAfterElectronics()*5));
SetMinNCells();
SetMaxNCells();
SetTimeCorr();
SetMinCharge();
-
+ */
}
-
-//_____________________________________________________________________________
-AliITSClusterFinderSDD::~AliITSClusterFinderSDD()
-{
+//____________________________________________________________________________
+AliITSClusterFinderSDD::~AliITSClusterFinderSDD(){
// destructor
if(fMap) delete fMap;
-
}
-//__________________________________________________________________________
-AliITSClusterFinderSDD::AliITSClusterFinderSDD(const AliITSClusterFinderSDD &source){
- // Copy Constructor
- if(&source == this) return;
- this->fClusters = source.fClusters ;
- this->fNclusters = source.fNclusters ;
- this->fMap = source.fMap ;
- 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;
-}
-
-//_________________________________________________________________________
-AliITSClusterFinderSDD&
- AliITSClusterFinderSDD::operator=(const AliITSClusterFinderSDD &source) {
- // Assignment operator
- if(&source == this) return *this;
- this->fClusters = source.fClusters ;
- this->fNclusters = source.fNclusters ;
- this->fMap = source.fMap ;
- 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::SetCutAmplitude(Float_t nsigma){
+ // set the signal threshold for cluster finder
+ Float_t baseline,noise,noise_after_el;
+
+ fResponse->GetNoiseParam(noise,baseline);
+ noise_after_el = ((AliITSresponseSDD*)fResponse)->GetNoiseAfterElectronics();
+ fCutAmplitude = (Int_t)((baseline + nsigma*noise_after_el));
}
-
-
-//_____________________________________________________________________________
-
-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();
+//______________________________________________________________________
+void AliITSClusterFinderSDD::Find1DClusters(){
+ // find 1D clusters
+ static AliITS *iTS = (AliITS*)gAlice->GetModule("ITS");
- Float_t anodePitch = fSegmentation->Dpz(dummy);
- // map the signal
- fMap->SetThreshold(fCutAmplitude);
-
- fMap->FillMap();
+ // 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->ClearMap();
+ fMap->SetThreshold(fCutAmplitude);
+ fMap->FillMap();
- Float_t noise;
- Float_t baseline;
- fResponse->GetNoiseParam(noise,baseline);
-
- Int_t nofFoundClusters = 0;
- 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);
- 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) {
-
- imax = it;
- imaxd = it;
- // maximum of signal
-
- Float_t fadcmax = 0.;
- Float_t dfadcmax = 0.;
- Int_t lthrmina = 1;
- Int_t lthrmint = 3;
-
- Int_t lthra = 1;
- Int_t lthrt = 0;
-
- for(m=0;m<20;m++) {
- Int_t id = it+m;
- if(id>=fMaxNofSamples) break;
- 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;
-
- if(fMap->TestHit(idx,imax) == kEmpty) {it++; continue;}
-
- // cluster charge
- 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<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 clusterCharge = 0.;
- Float_t clusterAnode = k+0.5;
- Float_t clusterTime = 0.;
- Float_t clusterMult = 0.;
- Float_t clusterPeakAmplitude = 0.;
- Int_t its,peakpos=-1;
- Float_t n, baseline;
- fResponse->GetNoiseParam(n,baseline);
- for(its=tstart; its<=tstop; its++) {
- fadc=(float)fMap->GetSignal(idx,its);
- if(fadc>baseline)
- fadc-=baseline;
- else
- fadc=0.;
- clusterCharge += 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;
- if(fadc > 0) clusterMult++;
- if(its == tstop) {
- clusterTime /= (clusterCharge/fTimeStep); // ns
- if(clusterTime > fTimeCorr) clusterTime -= fTimeCorr; // ns
- }
- }
-
- Float_t clusteranodePath = (clusterAnode - fNofAnodes/2)*anodePitch;
- Float_t clusterDriftPath = clusterTime*fDriftSpeed;
- clusterDriftPath = fSddLength-clusterDriftPath;
-
- 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
-
- it++;
-
- } // while (samples)
- } // anodes
- } // detectors (2)
-
- //fMap->ClearMap();
-
- for(i=0;i<fNofAnodes;i++) delete[] dfadc[i];
- delete [] dfadc;
-
- return;
+ Float_t noise;
+ Float_t baseline;
+ fResponse->GetNoiseParam(noise,baseline);
+ Int_t nofFoundClusters = 0;
+ 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);
+ 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) {
+ imax = it;
+ imaxd = it;
+ // maximum of signal
+ Float_t fadcmax = 0.;
+ Float_t dfadcmax = 0.;
+ Int_t lthrmina = 1;
+ Int_t lthrmint = 3;
+ Int_t lthra = 1;
+ Int_t lthrt = 0;
+ for(m=0;m<20;m++) {
+ Int_t id = it+m;
+ if(id>=fMaxNofSamples) break;
+ fadc=(float)fMap->GetSignal(idx,id);
+ if(fadc > fadcmax) { fadcmax = fadc; imax = id;}
+ if(fadc > (float)fCutAmplitude) {
+ lthrt++;
+ } // end if
+ if(dfadc[k][id] > dfadcmax) {
+ dfadcmax = dfadc[k][id];
+ imaxd = id;
+ } // end if
+ } // end for m
+ it = imaxd;
+ if(fMap->TestHit(idx,imax) == kEmpty) {it++; continue;}
+ // cluster charge
+ 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<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];
+ } // end if
+ } // end for ij
+
+ Float_t clusterCharge = 0.;
+ Float_t clusterAnode = k+0.5;
+ Float_t clusterTime = 0.;
+ Int_t clusterMult = 0;
+ Float_t clusterPeakAmplitude = 0.;
+ Int_t its,peakpos = -1;
+ Float_t n, baseline;
+ fResponse->GetNoiseParam(n,baseline);
+ for(its=tstart; its<=tstop; its++) {
+ fadc=(float)fMap->GetSignal(idx,its);
+ if(fadc>baseline) fadc -= baseline;
+ else fadc = 0.;
+ clusterCharge += 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);
+ } // end if
+ clusterTime += fadc*its;
+ if(fadc > 0) clusterMult++;
+ if(its == tstop) {
+ clusterTime /= (clusterCharge/fTimeStep); // ns
+ if(clusterTime>fTimeCorr) clusterTime -=fTimeCorr;
+ //ns
+ } // end if
+ } // end for its
+
+ Float_t clusteranodePath = (clusterAnode - fNofAnodes/2)*
+ anodePitch;
+ Float_t clusterDriftPath = clusterTime*fDriftSpeed;
+ clusterDriftPath = fSddLength-clusterDriftPath;
+ if(clusterCharge <= 0.) break;
+ AliITSRawClusterSDD clust(j+1,//i
+ clusterAnode,clusterTime,//ff
+ clusterCharge, //f
+ clusterPeakAmplitude, //f
+ peakpos, //i
+ 0.,0.,clusterDriftPath,//fff
+ clusteranodePath, //f
+ clusterMult, //i
+ 0,0,0,0,0,0,0);//7*i
+ iTS->AddCluster(1,&clust);
+ it = tstop;
+ } // ilcl
+ it++;
+ } // while (samples)
+ } // anodes
+ } // detectors (2)
+
+ for(i=0;i<fNofAnodes;i++) delete[] dfadc[i];
+ delete [] dfadc;
+
+ return;
}
-//_____________________________________________________________________________
-
-void AliITSClusterFinderSDD::Find1DClustersE()
-{
-
- 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;
+//______________________________________________________________________
+void AliITSClusterFinderSDD::Find1DClustersE(){
+ // find 1D clusters
+ static 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->ClearMap();
+ 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;
+ } // end if on...
+ 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 );
+ } // end if fadc
+ }else{ // end fadc>0
+ 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++;
+ } // end if nTsteps
+ on = kFALSE;
+ } // end if on==kTRUE
+ } // end if fadc>0
+ } // 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 AliITSClusterFinderSDD::SearchPeak(Float_t *spect,Int_t xdim,Int_t zdim,
+ Int_t *peakX, Int_t *peakZ,
+ Float_t *peakAmp, Float_t minpeak ){
+ // search peaks on a 2D cluster
+ 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 );
+ // search peaks
+ for( Int_t z=1; z<zdim-1; z++ ){
+ for( Int_t x=1; x<xdim-2; 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++;
+ } // end if ....
+ } // end for x
+ } // end for z
+ // 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];
+ } // end if ...
+ } // end for j
+ } // end for 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];
+ } // end for k
+ j--;
+ } // end for j
+ if( nFlag > 1 ){
+ peakX[i] /= nFlag;
+ peakZ[i] /= nFlag;
+ } // end fi nFlag
+ } // end for i
+ 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;
+//______________________________________________________________________
+void AliITSClusterFinderSDD::PeakFunc( Int_t xdim, Int_t zdim, Float_t *par,
+ Float_t *spe, Float_t *integral){
+ // function used to fit the clusters
+ // par -> parameters..
+ // 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 electronics = fResponse->Electronics(); // 1 = PASCAL, 2 = OLA
+ const Int_t knParam = 5;
+ 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.;
+ Float_t signal = 0.;
+ if( electronics == 1 ){ // PASCAL
+ x2 = (x-par[k+1]+T2)/T2;
+ signal = (x2>0.) ? par[k]*x2*exp(-x2+1.-z2) :0.0; // RCCR2
+ // signal =(x2>0.) ? par[k]*x2*x2*exp(-2*x2+2.-z2 ):0.0;//RCCR
+ }else if( electronics == 2 ) { // OLA
+ x2 = (x-par[k+1])*(x-par[k+1])/T2;
+ signal = par[k] * exp( -x2 - z2 );
+ } else {
+ cout << "Wrong SDD Electronics =" << electronics << endl;
+ // exit( 1 );
+ } // end if electronicx
+ spe[x*zdim+z] += signal;
+ if( integral != 0 ) integral[i] += signal;
+ } // end for x
+ } // end for z
+ k += knParam;
+ } // end for i
+ 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 );
+//__________________________________________________________________________
+Float_t AliITSClusterFinderSDD::ChiSqr( 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;
+ } // end for x
+ } // end for z
+ 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;
+//_______________________________________________________________________
+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;
+ const Int_t knParam = 5;
+ Int_t npeak = (Int_t)param[0];
+ for( k=1; k<(npeak*knParam+1); k++ ) prm0[k] = param[k];
+ for( k=1; k<(npeak*knParam+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 = ChiSqr( xdim, zdim, spe, speFit );
+ p2 = p1+delta;
+ param[k] = p2;
+ PeakFunc( xdim, zdim, param, speFit );
+ chisq2 = ChiSqr( 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;
+ } // end if
+ 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;
+ } // end if
+ param[k] = p3;
+ // Constrain paramiters
+ Int_t kpos = (k-1) % knParam;
+ switch( kpos ){
+ case 0 :
+ if( param[k] <= 20 ) param[k] = fMinPeak;
+ break;
+ case 1 :
+ if( fabs( param[k] - prm0[k] ) > 1.5 ) param[k] = prm0[k];
+ break;
+ case 2 :
+ if( fabs( param[k] - prm0[k] ) > 1. ) param[k] = prm0[k];
+ break;
+ case 3 :
+ if( param[k] < .5 ) param[k] = .5;
+ break;
+ case 4 :
+ if( param[k] < .288 ) param[k] = .288; // 1/sqrt(12) = 0.288
+ if( param[k] > zdim*.5 ) param[k] = zdim*.5;
+ break;
+ }; // end switch
+ PeakFunc( xdim, zdim, param, speFit );
+ chisq3 = ChiSqr( 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) % knParam;
+ switch( kpos ){
+ case 0 :
+ if( param[k] <= 20 ) param[k] = fMinPeak;
+ break;
+ case 1 :
+ if( fabs( param[k] - prm0[k] ) > 1.5 ) param[k] = prm0[k];
+ break;
+ case 2 :
+ if( fabs( param[k] - prm0[k] ) > 1. ) param[k] = prm0[k];
+ break;
+ case 3 :
+ if( param[k] < .5 ) param[k] = .5;
+ break;
+ case 4 :
+ if( param[k] < .288 ) param[k] = .288; // 1/sqrt(12) = 0.288
+ if( param[k] > zdim*.5 ) param[k] = zdim*.5;
+ break;
+ }; // end switch
+ PeakFunc( xdim, zdim, param, speFit );
+ chisqt = ChiSqr( 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;
+ } // end for k
+ // EVALUATE FIT AND CHI-SQUARED FOR OPTIMIZED PARAMETERS
+ PeakFunc( xdim, zdim, param, speFit );
+ *chisqr = ChiSqr( 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 );
+//_________________________________________________________________________
+Int_t AliITSClusterFinderSDD::NoLinearFit( Int_t xdim, Int_t zdim,
+ Float_t *param, Float_t *spe,
+ Int_t *niter, Float_t *chir ){
+ // fit method from Comput. Phys. Commun 46(1987) 149
+ const Float_t kchilmt = 0.01; // relative accuracy
+ const Int_t knel = 3; // for parabolic minimization
+ const Int_t knstop = 50; // Max. iteration number
+ const Int_t knParam = 5;
+ Int_t npeak = (Int_t)param[0];
+ // RETURN IF NUMBER OF DEGREES OF FREEDOM IS NOT POSITIVE
+ if( (xdim*zdim - npeak*knParam) <= 0 ) return( -1 );
+ Float_t degFree = (xdim*zdim - npeak*knParam)-1;
+ Int_t n, k, iterNum = 0;
+ Float_t *prm0 = new Float_t[npeak*knParam+1];
+ Float_t *step = new Float_t[npeak*knParam+1];
+ Float_t *schi = new Float_t[npeak*knParam+1];
+ Float_t *sprm[3];
+ sprm[0] = new Float_t[npeak*knParam+1];
+ sprm[1] = new Float_t[npeak*knParam+1];
+ sprm[2] = new Float_t[npeak*knParam+1];
+ Float_t chi0, chi1, reldif, a, b, prmin, dp;
+ Float_t *speFit = new Float_t[ xdim*zdim ];
+ PeakFunc( xdim, zdim, param, speFit );
+ chi0 = ChiSqr( xdim, zdim, spe, speFit );
+ chi1 = chi0;
+ for( k=1; k<(npeak*knParam+1); k++) prm0[k] = param[k];
+ for( k=1 ; k<(npeak*knParam+1); k+=knParam ){
+ 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;
+ } // end for k
+ Int_t out = 0;
+ do{
+ iterNum++;
+ 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) kchilmt ){
+ *chir = (chi1>0) ? (float) TMath::Sqrt (chi1/degFree) :0;
+ *niter = iterNum;
+ out = 0;
+ break;
+ } // end if
+ if( (reldif < (float)(5*kchilmt)) && (iterNum > knstop) ){
+ *chir = (chi1>0) ?(float) TMath::Sqrt (chi1/degFree):0;
+ *niter = iterNum;
+ out = 0;
+ break;
+ } // end if
+ if( iterNum > 5*knstop ){
+ *chir = (chi1>0) ?(float) TMath::Sqrt (chi1/degFree):0;
+ *niter = iterNum;
+ out = 1;
+ break;
+ } // end if
+ if( iterNum <= knel ) continue;
+ n = iterNum - (iterNum/knel)*knel; // EXTRAPOLATION LIMIT COUNTER N
+ if( n > 3 || n == 0 ) continue;
+ schi[n-1] = chi1;
+ for( k=1; k<(npeak*knParam+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*knParam+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
+ } // end for k
+ } 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::ResolveClustersE(){
+ // The function to resolve clusters if the clusters overlapping exists
+ Int_t i;
+ static 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
+
+ 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;
+ } // end if
+ Int_t xdim = tstop-tstart+3;
+ Int_t zdim = astop-astart+3;
+ if(xdim > 50 || zdim > 30) { cout << "Warning: xdim: " << xdim << ", zdim: " << zdim << endl; continue; }
+ 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 kNp = 150;
+ Int_t peakX1[kNp];
+ Int_t peakZ1[kNp];
+ Float_t peakAmp1[kNp];
+ 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 parameters 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;
+ } // end for i
+ Int_t niter;
+ Float_t chir;
+ NoLinearFit( xdim, zdim, par, sp, &niter, &chir );
+ Float_t peakX[kNp];
+ Float_t peakZ[kNp];
+ Float_t sigma[kNp];
+ Float_t tau[kNp];
+ Float_t peakAmp[kNp];
+ Float_t integral[kNp];
+ //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;
+ } // end for i
+ // calculate parameter 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 );
+ } // end for i
+ fClusters->RemoveAt( j );
+ delete [] par;
+ } else { // something odd
+ cout << " --- Peak not found!!!! minpeak=" << fMinPeak<<
+ " cluster peak=" << clusterJ->PeakAmpl() <<
+ " module=" << fModule << endl;
+ clusterJ->PrintInfo();
+ cout << " xdim=" << xdim-2 << " zdim=" << zdim-2 << endl << endl;
+ }
+ delete [] sp;
+ } // cluster loop
+ fClusters->Compress();
+// fMap->ClearMap();
}
-//_____________________________________________________________________________
-void AliITSClusterFinderSDD::GroupClusters()
-{
- // group clusters
- Int_t dummy=0;
- Float_t fTimeStep = fSegmentation->Dpx(dummy);
-
-
- // get number of clusters for this module
- Int_t nofClusters = fClusters->GetEntriesFast();
- nofClusters -= fNclusters;
-
- AliITSRawClusterSDD *clusterI;
- AliITSRawClusterSDD *clusterJ;
-
- 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++) {
- if(label[i] != 0) continue;
- for(j=i+1; j<nofClusters; j++) {
- if(label[j] != 0) continue;
- clusterI = (AliITSRawClusterSDD*) fClusters->At(i);
- clusterJ = (AliITSRawClusterSDD*) fClusters->At(j);
- // 1.3 good
- 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->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;
-
+//________________________________________________________________________
+void AliITSClusterFinderSDD::GroupClusters(){
+ // group clusters
+ Int_t dummy=0;
+ Float_t fTimeStep = fSegmentation->Dpx(dummy);
+ // get number of clusters for this module
+ Int_t nofClusters = fClusters->GetEntriesFast();
+ nofClusters -= fNclusters;
+ AliITSRawClusterSDD *clusterI;
+ AliITSRawClusterSDD *clusterJ;
+ 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++) {
+ if(label[i] != 0) continue;
+ for(j=i+1; j<nofClusters; j++) {
+ if(label[j] != 0) continue;
+ clusterI = (AliITSRawClusterSDD*) fClusters->At(i);
+ clusterJ = (AliITSRawClusterSDD*) fClusters->At(j);
+ // 1.3 good
+ 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->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;
}
-
-//_____________________________________________________________________________
-
-void AliITSClusterFinderSDD::SelectClusters()
-{
- // get number of clusters for this module
- Int_t nofClusters = fClusters->GetEntriesFast();
- nofClusters -= fNclusters;
-
- Int_t i;
- for(i=0; i<nofClusters; i++) {
- AliITSRawClusterSDD *clusterI = (AliITSRawClusterSDD*) fClusters->At(i);
- Int_t rmflg = 0;
- Float_t wy = 0.;
- if(clusterI->Anodes() != 0.) {
- wy = ((Float_t) clusterI->Samples())/clusterI->Anodes();
- }
- 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();
- return;
-
+//________________________________________________________________________
+void AliITSClusterFinderSDD::SelectClusters(){
+ // get number of clusters for this module
+ Int_t nofClusters = fClusters->GetEntriesFast();
+
+ nofClusters -= fNclusters;
+ Int_t i;
+ for(i=0; i<nofClusters; i++) {
+ AliITSRawClusterSDD *clusterI =(AliITSRawClusterSDD*) fClusters->At(i);
+ Int_t rmflg = 0;
+ Float_t wy = 0.;
+ if(clusterI->Anodes() != 0.) {
+ wy = ((Float_t) clusterI->Samples())/clusterI->Anodes();
+ } // end if
+ 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();
+ return;
}
-
-//_____________________________________________________________________________
-
-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
+//__________________________________________________________________________
+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;
+ 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;
+ } // end if
+ // 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.;
+ } // end for ii
+
+ 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;
+ } // end if
+ 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];
+ } // end for 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) );
+ } // end if
+ if( nanode == 2 ){
+ scl = TMath::Sqrt( (-0.18*xm*1.e-3+21.3)/(-0.57*xm*1.e-3+71.8) );
+ } // end if
+ if( nanode == 3 ){
+ scl = TMath::Sqrt( (-0.5*xm*1.e-3+34.5)/(-0.57*xm*1.e-3+71.8) );
+ } // end if
+ if( nanode > 3 ){
+ scl = TMath::Sqrt( (1.3*xm*1.e-3+49.)/(-0.57*xm*1.e-3+71.8) );
+ } // end if
+ // 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.);
- // 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
+ 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 (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;
+ 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);
+ } // end if dxz
+ 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;
+ } // end for i
+ // 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;
+ } // end if
+ xxx += tmp*tmp*tmp*q[i];
+ } // end for 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;
+ } // end if
+ 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 !
+ } // end for i
+ 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;
+ } // end for i
+ Int_t ncl = nfhits;
+ if(nfhits == 1 && separate == 1) {
+ cout<<"!!!!! no separate"<<endl;
+ ncl = -2;
+ } // end if
+ 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
-
- AliITS *iTS=(AliITS*)gAlice->GetModule("ITS");
-
- // get number of clusters for this module
- Int_t nofClusters = fClusters->GetEntriesFast();
- nofClusters -= fNclusters;
-
- 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);
- 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(kconvGeV*clusterI->Q());
- rnew.SetSigmaX2(kRMSx*kRMSx);
- rnew.SetSigmaZ2(kRMSz*kRMSz);
- 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);
- } // I clusters
-
- fMap->ClearMap();
+//______________________________________________________________________
+void AliITSClusterFinderSDD::GetRecPoints(){
+ // get rec points
+ static AliITS *iTS=(AliITS*)gAlice->GetModule("ITS");
+ // get number of clusters for this module
+ Int_t nofClusters = fClusters->GetEntriesFast();
+ nofClusters -= fNclusters;
+ 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);
+ 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");
+ } // end if !dig
+ AliITSRecPoint rnew;
+ rnew.SetX(clusterI->X());
+ rnew.SetZ(clusterI->Z());
+ rnew.SetQ(clusterI->Q()); // in KeV - should be ADC
+ rnew.SetdEdX(kconvGeV*clusterI->Q());
+ rnew.SetSigmaX2(kRMSx*kRMSx);
+ rnew.SetSigmaZ2(kRMSz*kRMSz);
+ 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],c
+ // lusterI->X(),clusterI->Z());
+ iTS->AddRecPoint(rnew);
+ } // I clusters
+// fMap->ClearMap();
}
-
-//_____________________________________________________________________________
-
-void AliITSClusterFinderSDD::FindRawClusters(Int_t mod)
-{
- // find raw clusters
+//______________________________________________________________________
+void AliITSClusterFinderSDD::FindRawClusters(Int_t mod){
+ // find raw clusters
+
+ fModule = mod;
+
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;
+//_______________________________________________________________________
+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