* about the suitability of this software for any purpose. It is *
* provided "as is" without express or implied warranty. *
**************************************************************************/
+/*
+ $Id$
+ */
+///////////////////////////////////////////////////////////////////////////
+// Cluster finder //
+// for Silicon //
+// Drift Detector //
+//////////////////////////////////////////////////////////////////////////
-#include <TFile.h>
#include "AliITSClusterFinderSDD.h"
#include "AliITSMapA1.h"
-#include "AliITS.h"
-#include "AliITSdigit.h"
-#include "AliITSRawCluster.h"
+#include "AliITSRawClusterSDD.h"
#include "AliITSRecPoint.h"
-#include "AliITSsegmentation.h"
-#include "AliITSresponse.h"
-#include "AliRun.h"
-
-
+#include "AliITSdigitSDD.h"
+#include "AliITSDetTypeRec.h"
+#include "AliITSCalibrationSDD.h"
+#include "AliITSsegmentationSDD.h"
+#include "AliLog.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();
- SetCutAmplitude();
- SetDAnode();
- SetDTime();
- SetMinPeak();
- SetMinNCells();
- SetMaxNCells();
- SetTimeCorr();
- fMap=new AliITSMapA1(fSegmentation,fDigits,fCutAmplitude);
-
+//______________________________________________________________________
+AliITSClusterFinderSDD::AliITSClusterFinderSDD():
+AliITSClusterFinder(),
+fNclusters(0),
+fDAnode(0.0),
+fDTime(0.0),
+fTimeCorr(0.0),
+fCutAmplitude(0),
+fMinPeak(0),
+fMinCharge(0),
+fMinNCells(0),
+fMaxNCells(0){
+ // default constructor
}
-
-//_____________________________________________________________________________
-AliITSClusterFinderSDD::AliITSClusterFinderSDD()
-{
- // constructor
- fSegmentation=0;
- fResponse=0;
- fDigits=0;
- fClusters=0;
- fNclusters=0;
- fMap=0;
- SetCutAmplitude();
+//______________________________________________________________________
+AliITSClusterFinderSDD::AliITSClusterFinderSDD(AliITSDetTypeRec* dettyp,
+ TClonesArray *digits,
+ TClonesArray *recp):
+AliITSClusterFinder(dettyp),
+fNclusters(0),
+fDAnode(0.0),
+fDTime(0.0),
+fTimeCorr(0.0),
+fCutAmplitude(0),
+fMinPeak(0),
+fMinCharge(0),
+fMinNCells(0),
+fMaxNCells(0){
+ // standard constructor
+
+ SetDigits(digits);
+ SetClusters(recp);
+ SetCutAmplitude(fDetTypeRec->GetITSgeom()->GetStartSDD());
SetDAnode();
SetDTime();
- SetMinPeak();
+ SetMinPeak((Int_t)((AliITSCalibrationSDD*)GetResp(fDetTypeRec->GetITSgeom()->GetStartSDD()))->GetNoiseAfterElectronics(0)*5);
SetMinNCells();
SetMaxNCells();
SetTimeCorr();
-
+ SetMinCharge();
+ SetMap(new AliITSMapA1(GetSeg(),Digits(),fCutAmplitude));
}
+//______________________________________________________________________
+void AliITSClusterFinderSDD::SetCutAmplitude(Int_t mod,Double_t nsigma){
+ // set the signal threshold for cluster finder
+ Double_t baseline,noiseAfterEl;
-//_____________________________________________________________________________
-AliITSClusterFinderSDD::~AliITSClusterFinderSDD()
-{
- // destructor
-
- if(fMap) delete fMap;
-
+
+ Int_t nanodes = GetResp(mod)->Wings()*GetResp(mod)->Channels()*GetResp(mod)->Chips();
+ fCutAmplitude.Set(nanodes);
+ for(Int_t ian=0;ian<nanodes;ian++){
+ baseline=GetResp(mod)->GetBaseline(ian);
+ noiseAfterEl = ((AliITSCalibrationSDD*)GetResp(mod))->GetNoiseAfterElectronics(ian);
+ fCutAmplitude[ian] = (Int_t)((baseline + nsigma*noiseAfterEl));
+ }
+}
+//______________________________________________________________________
+void AliITSClusterFinderSDD::Find1DClusters(){
+ // find 1D clusters
+
+ // retrieve the parameters
+ Int_t fNofMaps = GetSeg()->Npz();
+ Int_t fMaxNofSamples = GetSeg()->Npx();
+ Int_t fNofAnodes = fNofMaps/2;
+ Int_t dummy = 0;
+ Double_t fTimeStep = GetSeg()->Dpx(dummy);
+ Double_t fSddLength = GetSeg()->Dx();
+ Double_t fDriftSpeed = GetResp(fModule)->GetDriftSpeed();
+ Double_t anodePitch = GetSeg()->Dpz(dummy);
+
+ // map the signal
+ Map()->ClearMap();
+ Map()->SetThresholdArr(fCutAmplitude);
+ Map()->FillMap2();
+
+ Int_t nofFoundClusters = 0;
+ Int_t i;
+ Double_t **dfadc = new Double_t*[fNofAnodes];
+ for(i=0;i<fNofAnodes;i++) dfadc[i] = new Double_t[fMaxNofSamples];
+ Double_t fadc = 0.;
+ Double_t fadc1 = 0.;
+ Double_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=(Double_t)Map()->GetSignal(idx,l);
+ if(l>0) fadc1=(Double_t)Map()->GetSignal(idx,l-1);
+ if(l>0) dfadc[k][l-1] = fadc2-fadc1;
+ } // samples
+ } // anodes
+
+ for(k=0;k<fNofAnodes;k++) {
+ AliDebug(5,Form("Anode: %d, Wing: %d",k+1,j+1));
+ 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
+ Double_t fadcmax = 0.;
+ Double_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)Map()->GetSignal(idx,id);
+ if(fadc > fadcmax) { fadcmax = fadc; imax = id;}
+ if(fadc > (float)fCutAmplitude[idx])lthrt++;
+ if(dfadc[k][id] > dfadcmax) {
+ dfadcmax = dfadc[k][id];
+ imaxd = id;
+ } // end if
+ } // end for m
+ it = imaxd;
+ if(Map()->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;
+ Double_t dfadcmin = 10000.;
+ Int_t ij;
+ for(ij=0; ij<20; ij++) {
+ if(tstart+ij > 255) { tstop = 255; break; }
+ fadc=(float)Map()->GetSignal(idx,tstart+ij);
+ if((dfadc[k][tstart+ij] < dfadcmin) &&
+ (fadc > fCutAmplitude[idx])) {
+ tstop = tstart+ij+5;
+ if(tstop > 255) tstop = 255;
+ dfadcmin = dfadc[k][it+ij];
+ } // end if
+ } // end for ij
+
+ Double_t clusterCharge = 0.;
+ Double_t clusterAnode = k+0.5;
+ Double_t clusterTime = 0.;
+ Int_t clusterMult = 0;
+ Double_t clusterPeakAmplitude = 0.;
+ Int_t its,peakpos = -1;
+ //Double_t n, baseline;
+ //GetResp(fModule)->GetNoiseParam(n,baseline);
+ Double_t baseline=GetResp(fModule)->GetBaseline(idx);
+ for(its=tstart; its<=tstop; its++) {
+ fadc=(float)Map()->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=Map()->GetHitIndex(idx,its);
+ Int_t shift = (int)(fTimeCorr/fTimeStep);
+ if(its>shift && its<(fMaxNofSamples-shift))
+ peakpos = Map()->GetHitIndex(idx,its+shift);
+ else peakpos = Map()->GetHitIndex(idx,its);
+ if(peakpos<0) peakpos =Map()->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
+
+ Double_t clusteranodePath = (clusterAnode - fNofAnodes/2)*
+ anodePitch;
+ Double_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
+ fDetTypeRec->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(){
+ // find 1D clusters
+ // retrieve the parameters
+ Int_t fNofMaps = GetSeg()->Npz();
+ Int_t fMaxNofSamples = GetSeg()->Npx();
+ Int_t fNofAnodes = fNofMaps/2;
+ Int_t dummy=0;
+ Double_t fTimeStep = GetSeg()->Dpx( dummy );
+ Double_t fSddLength = GetSeg()->Dx();
+ Double_t fDriftSpeed = GetResp(fModule)->GetDriftSpeed();
+ Double_t anodePitch = GetSeg()->Dpz( dummy );
+
+ Map()->ClearMap();
+ Map()->SetThresholdArr( fCutAmplitude );
+ Map()->FillMap2();
+
+ 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;
+ Double_t baseline=GetResp(fModule)->GetBaseline(idx);
+ Bool_t on = kFALSE;
+ Int_t start = 0;
+ Int_t nTsteps = 0;
+ Double_t fmax = 0.;
+ Int_t lmax = 0;
+ Double_t charge = 0.;
+ Double_t time = 0.;
+ Double_t anode = k+0.5;
+ Int_t peakpos = -1;
+ for( Int_t l=0; l<fMaxNofSamples; l++ ){
+ Double_t fadc = (Double_t)Map()->GetSignal( idx, l );
+ if( fadc > 0.0 ){
+ if( on == kFALSE && l<fMaxNofSamples-4){
+ // star RawCluster (reset var.)
+ Double_t fadc1 = (Double_t)Map()->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 = Map()->GetHitIndex( idx, l+shift );
+ else
+ peakpos = Map()->GetHitIndex( idx, l );
+ if( peakpos < 0) peakpos = Map()->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
+ Double_t anodePath =(anode-fNofAnodes/2)*anodePitch;
+ Double_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 );
+ fDetTypeRec->AddCluster( 1, &clust );
+ if(AliDebugLevel()>=5) clust.PrintInfo();
+ nClu++;
+ } // end if nTsteps
+ on = kFALSE;
+ } // end if on==kTRUE
+ } // end if fadc>0
+ } // samples
+ } // anodes
+ } // wings
+ AliDebug(3,Form("# Rawclusters %d",nClu));
+ return;
+}
+//_______________________________________________________________________
+Int_t AliITSClusterFinderSDD::SearchPeak(Double_t *spect,Int_t xdim,Int_t zdim,
+ Int_t *peakX, Int_t *peakZ,
+ Double_t *peakAmp, Double_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=1; x<xdim-2; x++ ){
+ Double_t sxz = spect[x*zdim+z];
+ Double_t sxz1 = spect[(x+1)*zdim+z];
+ Double_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, Double_t *par,
+ Double_t *spe, Double_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 = GetResp(fModule)->GetElectronics(); // 1 = PASCAL, 2 = OLA
+ const Int_t knParam = 5;
+ Int_t npeak = (Int_t)par[0];
+
+ memset( spe, 0, sizeof( Double_t )*zdim*xdim );
+
+ Int_t k = 1;
+ for( Int_t i=0; i<npeak; i++ ){
+ if( integral != 0 ) integral[i] = 0.;
+ Double_t sigmaA2 = par[k+4]*par[k+4]*2.;
+ Double_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++ ){
+ Double_t z2 = (z-par[k+2])*(z-par[k+2])/sigmaA2;
+ Double_t x2 = 0.;
+ Double_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 {
+ Warning("PeakFunc","Wrong SDD Electronics = %d",
+ electronics);
+ // 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;
}
//__________________________________________________________________________
-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;
+Double_t AliITSClusterFinderSDD::ChiSqr( Int_t xdim, Int_t zdim, Double_t *spe,
+ Double_t *speFit ) const{
+ // EVALUATES UNNORMALIZED CHI-SQUARED
+ Double_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;
+ Double_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, Double_t *param,
+ Double_t *prm0,Double_t *steprm,
+ Double_t *chisqr,Double_t *spe,
+ Double_t *speFit ){
+ //
+ Int_t k, nnn, mmm, i;
+ Double_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( TMath::Abs( p1 ) > 1.0E-6 )
+ if ( TMath::Abs( delta/p1 ) < 1.0E-4 ) delta = p1/1000;
+ else delta = (Double_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( TMath::Abs( param[k] - prm0[k] ) > 1.5 ) param[k] = prm0[k];
+ break;
+ case 2 :
+ if( TMath::Abs( 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 = (Double_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 = (Double_t) max (TMath::Abs(p3-p2), TMath::Abs(p2-p1));
+ //if( TMath::Abs( 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( TMath::Abs( param[k] - prm0[k] ) > 1.5 ) param[k] = prm0[k];
+ break;
+ case 2 :
+ if( TMath::Abs( 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;
}
-
//_________________________________________________________________________
-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;
+Int_t AliITSClusterFinderSDD::NoLinearFit( Int_t xdim, Int_t zdim,
+ Double_t *param, Double_t *spe,
+ Int_t *niter, Double_t *chir ){
+ // fit method from Comput. Phys. Commun 46(1987) 149
+ const Double_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 );
+ Double_t degFree = (xdim*zdim - npeak*knParam)-1;
+ Int_t n, k, iterNum = 0;
+ Double_t *prm0 = new Double_t[npeak*knParam+1];
+ Double_t *step = new Double_t[npeak*knParam+1];
+ Double_t *schi = new Double_t[npeak*knParam+1];
+ Double_t *sprm[3];
+ sprm[0] = new Double_t[npeak*knParam+1];
+ sprm[1] = new Double_t[npeak*knParam+1];
+ sprm[2] = new Double_t[npeak*knParam+1];
+ Double_t chi0, chi1, reldif, a, b, prmin, dp;
+ Double_t *speFit = new Double_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 ) ? ((Double_t) TMath::Abs( 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++ ){
+ Double_t tmp0 = sprm[0][k];
+ Double_t tmp1 = sprm[1][k];
+ Double_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( TMath::Abs(prmin-tmp2) > TMath::Abs(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::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
- fMap->SetThreshold(fCutAmplitude);
- fMap->FillMap();
-
- Float_t maxadc = fResponse->MaxAdc();
- Float_t topValue = fResponse->MagicValue();
- Float_t norm = maxadc/topValue;
-
- 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;
- // 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 = 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-1;
- if( tstart<0 ) tstart = 0;
-
- Bool_t ilcl = 0;
- if(lthrt >= lthrmint && lthra >= lthrmina) ilcl = 1;
- //printf("ilcl %d\n",ilcl);
-
- if(ilcl) {
- nofFoundClusters++;
- Int_t tstop = tstart;
- Float_t dfadcmin = 10000.;
- Int_t ij;
- for(ij=0; ij<20; ij++) {
- if(dfadc[k][it+ij] < dfadcmin) {
- tstop = it+ij+1;
- 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);
- n *= norm;
- baseline *= norm;
- 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;
- clusterMult++;
- if(its == tstop) {
- // charge from ADC back to nA
- //clusterCharge /= norm;
- if(clusterCharge <= 0.) printf("clusterCharge %f norm %f\n",clusterCharge,norm);
- clusterTime /= (clusterCharge/fTimeStep); // ns
- clusterCharge *= (fTimeStep/160.); // keV
- if(clusterTime > fTimeCorr) clusterTime -= fTimeCorr; // ns
- }
- }
- // cout << "Anode: " << k << ", tstart: " << tstart << ", tstop: " << tstop << ", Charge: " << clusterCharge << endl;
-
- Float_t clusteranodePath = (clusterAnode - fNofAnodes/2)*anodePitch;
- Float_t clusterDriftPath = clusterTime*fDriftSpeed;
- if(TMath::Abs(clusterDriftPath) > fSddLength) {
- Warning("AliITSClusterFinderSDD","Cluster drift path %f bigger then the detector size - please parametrise the time correction as a function of the drift time!",clusterDriftPath);
- }
- clusterDriftPath = fSddLength-clusterDriftPath;
-
- if(clusterCharge <= 0.) break;
-
- AliITSRawClusterSDD clust(j+1,clusterAnode,clusterTime,clusterCharge,clusterPeakAmplitude,peakpos,0.,0.,clusterDriftPath,clusteranodePath,clusterMult);
- 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;
-
+//______________________________________________________________________
+void AliITSClusterFinderSDD::ResolveClusters(){
+ // The function to resolve clusters if the clusters overlapping exists
+ Int_t i;
+ // get number of clusters for this module
+ Int_t nofClusters = NClusters();
+ nofClusters -= fNclusters;
+ Int_t fNofMaps = GetSeg()->Npz();
+ Int_t fNofAnodes = fNofMaps/2;
+ //Int_t fMaxNofSamples = GetSeg()->Npx();
+ Int_t dummy=0;
+ Double_t fTimeStep = GetSeg()->Dpx( dummy );
+ Double_t fSddLength = GetSeg()->Dx();
+ Double_t fDriftSpeed = GetResp(fModule)->GetDriftSpeed();
+ Double_t anodePitch = GetSeg()->Dpz( dummy );
+ //Double_t n, baseline;
+ //GetResp(fModule)->GetNoiseParam( n, baseline );
+ Int_t electronics =GetResp(fModule)->GetElectronics(); // 1 = PASCAL, 2 = OLA
+
+ for( Int_t j=0; j<nofClusters; j++ ){
+ // get cluster information
+ AliITSRawClusterSDD *clusterJ=(AliITSRawClusterSDD*) Cluster(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 ) {
+ Warning("ResolveClusters","xdim: %d , zdim: %d ",xdim,zdim);
+ continue;
+ }
+ Double_t *sp = new Double_t[ xdim*zdim+1 ];
+ memset( sp, 0, sizeof(Double_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++ ){
+ Double_t fadc = Map()->GetSignal( ianode, itime );
+ Double_t baseline=GetResp(fModule)->GetBaseline(ianode);
+ 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];
+ Double_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();
+ Double_t *par = new Double_t[npeak*5+1];
+ par[0] = (Double_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;
+ Double_t chir;
+ NoLinearFit( xdim, zdim, par, sp, &niter, &chir );
+ Double_t peakX[kNp];
+ Double_t peakZ[kNp];
+ Double_t sigma[kNp];
+ Double_t tau[kNp];
+ Double_t peakAmp[kNp];
+ Double_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 = Map()->GetHitIndex(newAnode,newiTime+shift );
+ // clusterI.SetPeakPos( peakpos );
+
+ clusterI.SetPeakAmpl( peakAmp1[i] );
+ Double_t newAnodef = peakZ[i] - 0.5 + astart;
+ Double_t newiTimef = peakX[i] - 1 + tstart;
+ if( wing == 2 ) newAnodef -= fNofAnodes;
+ Double_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
+
+ Int_t timeBin = (Int_t)(newiTimef/fTimeStep+0.5);
+ Int_t peakpos = Map()->GetHitIndex( newAnode, timeBin );
+ if( peakpos < 0 ) {
+ for( Int_t ii=0; ii<3; ii++ ) {
+ peakpos = Map()->GetHitIndex( newAnode, timeBin+ii );
+ if( peakpos > 0 ) break;
+ peakpos = Map()->GetHitIndex( newAnode, timeBin-ii );
+ if( peakpos > 0 ) break;
+ }
+ }
+
+ if( peakpos < 0 ) {
+ //Warning("ResolveClusters",
+ // "Digit not found for cluster");
+ //if(AliDebugLevel()>=3) clusterI.PrintInfo();
+ continue;
+ }
+ clusterI.SetPeakPos( peakpos );
+ Double_t driftPath = fSddLength - newiTimef * fDriftSpeed;
+ Double_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] );
+
+ fDetTypeRec->AddCluster( 1, &clusterI );
+ } // end for i
+ Clusters()->RemoveAt( j );
+ delete [] par;
+ } else { // something odd
+ Warning( "ResolveClusters",
+ "--- Peak not found!!!! minpeak=%d ,cluster peak= %f"
+ " , module= %d",
+ fMinPeak, clusterJ->PeakAmpl(),GetModule());
+ clusterJ->PrintInfo();
+ Warning( "ResolveClusters"," xdim= %d zdim= %d", xdim-2, zdim-2 );
+ }
+ delete [] sp;
+ } // cluster loop
+ Clusters()->Compress();
+// Map()->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 = 3.2;
- if(clusterI->T() < fTimeStep*10) fDAnode = 1.2;
- 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 clusters
- label[i] = 1;
- } // I clusters
- fClusters->Compress();
-
- delete [] label;
- return;
-
+//________________________________________________________________________
+void AliITSClusterFinderSDD::GroupClusters(){
+ // group clusters
+ Int_t dummy=0;
+ Double_t fTimeStep = GetSeg()->Dpx(dummy);
+ // get number of clusters for this module
+ Int_t nofClusters = NClusters();
+ 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*) Cluster(i);
+ clusterJ = (AliITSRawClusterSDD*) Cluster(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;
+ if(AliDebugLevel()>=4){
+ clusterI->PrintInfo();
+ clusterJ->PrintInfo();
+ } // end if AliDebugLevel
+ clusterI->Add(clusterJ);
+ label[j] = 1;
+ Clusters()->RemoveAt(j);
+ j=i; // <- Ernesto
+ } // J clusters
+ label[i] = 1;
+ } // I clusters
+ Clusters()->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();
- }
- Float_t amp = clusterI->PeakAmpl();
- if(amp < fMinPeak) 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 = NClusters();
+
+ nofClusters -= fNclusters;
+ Int_t i;
+ for(i=0; i<nofClusters; i++) {
+ AliITSRawClusterSDD *clusterI =(AliITSRawClusterSDD*) Cluster(i);
+ Int_t rmflg = 0;
+ Double_t wy = 0.;
+ if(clusterI->Anodes() != 0.) {
+ wy = ((Double_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) Clusters()->RemoveAt(i);
+ } // I clusters
+ Clusters()->Compress();
+ 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 maxt=fSegmentation->Npx();
- 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
+
+ // get number of clusters for this module
+ Int_t nofClusters = NClusters();
+ nofClusters -= fNclusters;
+ const Double_t kconvGeV = 1.e-6; // GeV -> KeV
+ const Double_t kconv = 1.0e-4;
+ const Double_t kRMSx = 38.0*kconv; // microns->cm ITS TDR Table 1.3
+ const Double_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=NDigits();
+
+ Int_t lay,lad,det;
+ fDetTypeRec->GetITSgeom()->GetModuleId(fModule,lay,lad,det);
+ Int_t ind=(lad-1)*fDetTypeRec->GetITSgeom()->GetNdetectors(lay)+(det-1);
+ Int_t lyr=(lay-1);
+
+
+ for(i=0; i<nofClusters; i++) {
+ AliITSRawClusterSDD *clusterI = (AliITSRawClusterSDD*)Cluster(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*)GetDigit(idx);
+ if(!dig) {
+ // try cog
+ GetSeg()->GetPadIxz(clusterI->X(),clusterI->Z(),ix,iz);
+ dig = (AliITSdigitSDD*)Map()->GetHit(iz-1,ix-1);
+ // if null try neighbours
+ if (!dig) dig = (AliITSdigitSDD*)Map()->GetHit(iz-1,ix);
+ if (!dig) dig = (AliITSdigitSDD*)Map()->GetHit(iz-1,ix+1);
+ if (!dig) printf("SDD: cannot assign the track number!\n");
+ } // end if !dig
+ AliITSRecPoint rnew(fDetTypeRec->GetITSgeom());
+ rnew.SetXZ(fModule,clusterI->X(),clusterI->Z());
+ rnew.SetQ(clusterI->Q()); // in KeV - should be ADC
+ rnew.SetdEdX(kconvGeV*clusterI->Q());
+ rnew.SetSigmaDetLocX2(kRMSx*kRMSx);
+ rnew.SetSigmaZ2(kRMSz*kRMSz);
+
+ if(dig) rnew.SetLabel(dig->GetTrack(0),0);
+ if(dig) rnew.SetLabel(dig->GetTrack(1),1);
+ if(dig) rnew.SetLabel(dig->GetTrack(2),2);
+ rnew.SetDetectorIndex(ind);
+ rnew.SetLayer(lyr);
+ fDetTypeRec->AddRecPoint(rnew);
+ } // I clusters
+// Map()->ClearMap();
}
-
-//_____________________________________________________________________________
-
-void AliITSClusterFinderSDD::FindRawClusters()
-{
- // find raw clusters
- Find1DClusters();
+//______________________________________________________________________
+void AliITSClusterFinderSDD::FindRawClusters(Int_t mod){
+ // find raw clusters
+
+ SetModule(mod);
+ SetCutAmplitude(mod);
+ Int_t nanodes=GetSeg()->Npz();
+ Int_t noise=0;
+ for(Int_t i=0;i<nanodes;i++){
+ noise+=(Int_t)(((AliITSCalibrationSDD*)GetResp(mod))->GetNoiseAfterElectronics(i));
+ }
+ SetMinPeak((noise/nanodes)*5);
+ Find1DClustersE();
GroupClusters();
SelectClusters();
+ ResolveClusters();
GetRecPoints();
}
+//_______________________________________________________________________
+void AliITSClusterFinderSDD::PrintStatus() const{
+ // 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[0] << 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