ITS/AliITSClusterFinderSDD.cxx

   1 /**************************************************************************
   2  * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
   3  *                                                                        *
   4  * Author: The ALICE Off-line Project.                                    *
   5  * Contributors are mentioned in the code where appropriate.              *
   6  *                                                                        *
   7  * Permission to use, copy, modify and distribute this software and its   *
   8  * documentation strictly for non-commercial purposes is hereby granted   *
   9  * without fee, provided that the above copyright notice appears in all   *
  10  * copies and that both the copyright notice and this permission notice   *
  11  * appear in the supporting documentation. The authors make no claims     *
  12  * about the suitability of this software for any purpose. It is          *
  13  * provided "as is" without express or implied warranty.                  *
  14  **************************************************************************/
  15 /*
  16   $Id$
  17  */
  18 ///////////////////////////////////////////////////////////////////////////
  19 //  Cluster finder                                                       //
  20 //  for Silicon                                                          //
  21 //  Drift Detector                                                       //
  22 //////////////////////////////////////////////////////////////////////////
  23
  24
  25 #include "AliITSClusterFinderSDD.h"
  26 #include "AliITSMapA1.h"
  27 #include "AliITSRawClusterSDD.h"
  28 #include "AliITSRecPoint.h"
  29 #include "AliITSdigitSDD.h"
  30 #include "AliITSDetTypeRec.h"
  31 #include "AliITSCalibrationSDD.h"
  32 #include "AliITSsegmentationSDD.h"
  33 #include "AliITSgeom.h"
  34 #include "AliLog.h"
  35
  36 ClassImp(AliITSClusterFinderSDD)
  37
  38 //______________________________________________________________________
  39 AliITSClusterFinderSDD::AliITSClusterFinderSDD():
  40 AliITSClusterFinder(),
  41 fNclusters(0),
  42 fDAnode(0.0),
  43 fDTime(0.0),
  44 fTimeCorr(0.0),
  45 fCutAmplitude(0),
  46 fMinPeak(0),
  47 fMinCharge(0),
  48 fMinNCells(0),
  49 fMaxNCells(0){
  50     // default constructor
  51 }
  52 //______________________________________________________________________
  53 AliITSClusterFinderSDD::AliITSClusterFinderSDD(AliITSDetTypeRec* dettyp,
  54                                                TClonesArray *digits,
  55                                                TClonesArray *recp):
  56 AliITSClusterFinder(dettyp),
  57 fNclusters(0),
  58 fDAnode(0.0),
  59 fDTime(0.0),
  60 fTimeCorr(0.0),
  61 fCutAmplitude(0),
  62 fMinPeak(0),
  63 fMinCharge(0),
  64 fMinNCells(0),
  65 fMaxNCells(0){
  66     // standard constructor
  67
  68     SetDigits(digits);
  69     SetClusters(recp);
  70     SetCutAmplitude(fDetTypeRec->GetITSgeom()->GetStartSDD());
  71     SetDAnode();
  72     SetDTime();
  73     SetMinPeak((Int_t)((AliITSCalibrationSDD*)GetResp(fDetTypeRec->GetITSgeom()->GetStartSDD()))->GetNoiseAfterElectronics(0)*5);
  74     SetMinNCells();
  75     SetMaxNCells();
  76     SetTimeCorr();
  77     SetMinCharge();
  78     SetMap(new AliITSMapA1(GetSeg(),Digits(),fCutAmplitude));
  79 }
  80 //______________________________________________________________________
  81 void AliITSClusterFinderSDD::SetCutAmplitude(Int_t mod,Double_t nsigma){
  82     // set the signal threshold for cluster finder
  83     Double_t baseline,noiseAfterEl;
  84
  85     Bool_t isZeroSupp=GetResp(mod)->GetZeroSupp();
  86     Int_t nanodes = GetResp(mod)->Wings()*GetResp(mod)->Channels()*GetResp(mod)->Chips();
  87     fCutAmplitude.Set(nanodes);
  88     for(Int_t ian=0;ian<nanodes;ian++){
  89       noiseAfterEl = ((AliITSCalibrationSDD*)GetResp(mod))->GetNoiseAfterElectronics(ian);
  90       if(isZeroSupp){
  91         fCutAmplitude[ian] = (Int_t)(nsigma*noiseAfterEl);
  92       }
  93       else{
  94         baseline=GetResp(mod)->GetBaseline(ian);
  95         fCutAmplitude[ian] = (Int_t)((baseline + nsigma*noiseAfterEl));
  96       }
  97     }
  98 }
  99 //______________________________________________________________________
 100 void AliITSClusterFinderSDD::Find1DClusters(){
 101     // find 1D clusters
 102
 103     // retrieve the parameters
 104     Int_t fNofMaps       = GetSeg()->Npz();
 105     Int_t fMaxNofSamples = GetSeg()->Npx();
 106     Int_t fNofAnodes     = fNofMaps/2;
 107     Int_t dummy          = 0;
 108     Double_t fTimeStep    = GetSeg()->Dpx(dummy);
 109     Double_t fSddLength   = GetSeg()->Dx();
 110     AliITSCalibrationSDD* cal = (AliITSCalibrationSDD*)GetResp(fModule);
 111     Bool_t isZeroSupp=cal->GetZeroSupp();
 112
 113     // map the signal
 114     Map()->ClearMap();
 115     Map()->SetThresholdArr(fCutAmplitude);
 116     Map()->FillMap2();
 117
 118     Int_t nofFoundClusters = 0;
 119     Int_t i;
 120     Double_t **dfadc = new Double_t*[fNofAnodes];
 121     for(i=0;i<fNofAnodes;i++) dfadc[i] = new Double_t[fMaxNofSamples];
 122     Double_t fadc  = 0.;
 123     Double_t fadc1 = 0.;
 124     Double_t fadc2 = 0.;
 125     Int_t j,k,idx,l,m;
 126     for(j=0;j<2;j++) {
 127         for(k=0;k<fNofAnodes;k++) {
 128             idx = j*fNofAnodes+k;
 129             // signal (fadc) & derivative (dfadc)
 130             dfadc[k][255]=0.;
 131             for(l=0; l<fMaxNofSamples; l++) {
 132                 fadc2=(Double_t)Map()->GetSignal(idx,l);
 133                 if(l>0) fadc1=(Double_t)Map()->GetSignal(idx,l-1);
 134                 if(l>0) dfadc[k][l-1] = fadc2-fadc1;
 135             } // samples
 136         } // anodes
 137
 138         for(k=0;k<fNofAnodes;k++) {
 139             AliDebug(5,Form("Anode: %d, Wing: %d",k+1,j+1));
 140             idx = j*fNofAnodes+k;
 141             Int_t imax  = 0;
 142             Int_t imaxd = 0;
 143             Int_t it    = 0;
 144             while(it <= fMaxNofSamples-3) {
 145                 imax  = it;
 146                 imaxd = it;
 147                 // maximum of signal
 148                 Double_t fadcmax  = 0.;
 149                 Double_t dfadcmax = 0.;
 150                 Int_t lthrmina   = 1;
 151                 Int_t lthrmint   = 3;
 152                 Int_t lthra      = 1;
 153                 Int_t lthrt      = 0;
 154                 for(m=0;m<20;m++) {
 155                     Int_t id = it+m;
 156                     if(id>=fMaxNofSamples) break;
 157                     fadc=(float)Map()->GetSignal(idx,id);
 158                     if(fadc > fadcmax) { fadcmax = fadc; imax = id;}
 159                     if(fadc > (float)fCutAmplitude[idx])lthrt++;
 160                     if(dfadc[k][id] > dfadcmax) {
 161                         dfadcmax = dfadc[k][id];
 162                         imaxd    = id;
 163                     } // end if
 164                 } // end for m
 165                 it = imaxd;
 166                 if(Map()->TestHit(idx,imax) == kEmpty) {it++; continue;}
 167                 // cluster charge
 168                 Int_t tstart = it-2;
 169                 if(tstart < 0) tstart = 0;
 170                 Bool_t ilcl = 0;
 171                 if(lthrt >= lthrmint && lthra >= lthrmina) ilcl = 1;
 172                 if(ilcl) {
 173                     nofFoundClusters++;
 174                     Int_t tstop      = tstart;
 175                     Double_t dfadcmin = 10000.;
 176                     Int_t ij;
 177                     for(ij=0; ij<20; ij++) {
 178                         if(tstart+ij > 255) { tstop = 255; break; }
 179                         fadc=(float)Map()->GetSignal(idx,tstart+ij);
 180                         if((dfadc[k][tstart+ij] < dfadcmin) &&
 181                            (fadc > fCutAmplitude[idx])) {
 182                             tstop = tstart+ij+5;
 183                             if(tstop > 255) tstop = 255;
 184                             dfadcmin = dfadc[k][it+ij];
 185                         } // end if
 186                     } // end for ij
 187
 188                     Double_t clusterCharge = 0.;
 189                     Double_t clusterAnode  = k+0.5;
 190                     Double_t clusterTime   = 0.;
 191                     Int_t   clusterMult   = 0;
 192                     Double_t clusterPeakAmplitude = 0.;
 193                     Int_t its,peakpos     = -1;
 194
 195                     for(its=tstart; its<=tstop; its++) {
 196                         fadc=(float)Map()->GetSignal(idx,its);
 197                         if(!isZeroSupp){
 198                           Double_t baseline=GetResp(fModule)->GetBaseline(idx);
 199                           if(fadc>baseline) fadc -= baseline;
 200                           else fadc = 0.;
 201                         }
 202                         clusterCharge += fadc;
 203                         // as a matter of fact we should take the peak
 204                         // pos before FFT
 205                         // to get the list of tracks !!!
 206                         if(fadc > clusterPeakAmplitude) {
 207                             clusterPeakAmplitude = fadc;
 208                             //peakpos=Map()->GetHitIndex(idx,its);
 209                             Int_t shift = (int)(fTimeCorr/fTimeStep);
 210                             if(its>shift && its<(fMaxNofSamples-shift))
 211                                 peakpos  = Map()->GetHitIndex(idx,its+shift);
 212                             else peakpos = Map()->GetHitIndex(idx,its);
 213                             if(peakpos<0) peakpos =Map()->GetHitIndex(idx,its);
 214                         } // end if
 215                         clusterTime += fadc*its;
 216                         if(fadc > 0) clusterMult++;
 217                         if(its == tstop) {
 218                             clusterTime /= (clusterCharge/fTimeStep);   // ns
 219                             if(clusterTime>fTimeCorr) clusterTime -=fTimeCorr;
 220                             //ns
 221                         } // end if
 222                     } // end for its
 223                     Float_t theAnode=clusterAnode+j*fNofAnodes;
 224                     Double_t clusteranodePath = GetSeg()->GetLocalZFromAnode(theAnode);
 225                     Double_t clusterDriftPath = (Double_t)cal->GetDriftPath(clusterTime,clusteranodePath);
 226                     clusterDriftPath = fSddLength-clusterDriftPath;
 227                     if(clusterCharge <= 0.) break;
 228                     AliITSRawClusterSDD clust(j+1,//i
 229                                               clusterAnode,clusterTime,//ff
 230                                               clusterCharge, //f
 231                                               clusterPeakAmplitude, //f
 232                                               peakpos, //i
 233                                               0.,0.,clusterDriftPath,//fff
 234                                               clusteranodePath, //f
 235                                               clusterMult, //i
 236                                               0,0,0,0,0,0,0);//7*i
 237                     fDetTypeRec->AddCluster(1,&clust);
 238                     it = tstop;
 239                 } // ilcl
 240                 it++;
 241             } // while (samples)
 242         } // anodes
 243     } // detectors (2)
 244
 245     for(i=0;i<fNofAnodes;i++) delete[] dfadc[i];
 246     delete [] dfadc;
 247
 248     return;
 249 }
 250 //______________________________________________________________________
 251 void AliITSClusterFinderSDD::Find1DClustersE(){
 252     // find 1D clusters
 253     // retrieve the parameters
 254     Int_t fNofMaps = GetSeg()->Npz();
 255     Int_t fMaxNofSamples = GetSeg()->Npx();
 256     Int_t fNofAnodes = fNofMaps/2;
 257     Int_t dummy=0;
 258     Double_t fTimeStep = GetSeg()->Dpx( dummy );
 259     Double_t fSddLength = GetSeg()->Dx();
 260     AliITSCalibrationSDD* cal = (AliITSCalibrationSDD*)GetResp(fModule);
 261     Map()->ClearMap();
 262     Map()->SetThresholdArr( fCutAmplitude );
 263     Map()->FillMap2();
 264     Bool_t isZeroSupp=cal->GetZeroSupp();
 265
 266     Int_t nClu = 0;
 267     //        cout << "Search  cluster... "<< endl;
 268     for( Int_t j=0; j<2; j++ ){
 269         for( Int_t k=0; k<fNofAnodes; k++ ){
 270             Int_t idx = j*fNofAnodes+k;
 271             Bool_t on = kFALSE;
 272             Int_t start = 0;
 273             Int_t nTsteps = 0;
 274             Double_t fmax = 0.;
 275             Int_t lmax = 0;
 276             Double_t charge = 0.;
 277             Double_t time = 0.;
 278             Double_t anode = k+0.5;
 279             Int_t peakpos = -1;
 280             for( Int_t l=0; l<fMaxNofSamples; l++ ){
 281                 Double_t fadc = (Double_t)Map()->GetSignal( idx, l );
 282                 if( fadc > 0.0 ){
 283                     if( on == kFALSE && l<fMaxNofSamples-4){
 284                         // star RawCluster (reset var.)
 285                         Double_t fadc1 = (Double_t)Map()->GetSignal( idx, l+1 );
 286                         if( fadc1 < fadc ) continue;
 287                         start = l;
 288                         fmax = 0.;
 289                         lmax = 0;
 290                         time = 0.;
 291                         charge = 0.;
 292                         on = kTRUE;
 293                         nTsteps = 0;
 294                     } // end if on...
 295                     nTsteps++ ;
 296                     if(!isZeroSupp){
 297                       Double_t baseline=GetResp(fModule)->GetBaseline(idx);
 298                       if( fadc > baseline ) fadc -= baseline;
 299                       else fadc=0.;
 300                     }
 301                     charge += fadc;
 302                     time += fadc*l;
 303                     if( fadc > fmax ){
 304                         fmax = fadc;
 305                         lmax = l;
 306                         Int_t shift = (Int_t)(fTimeCorr/fTimeStep + 0.5);
 307                         if( l > shift && l < (fMaxNofSamples-shift) )
 308                             peakpos = Map()->GetHitIndex( idx, l+shift );
 309                         else
 310                             peakpos = Map()->GetHitIndex( idx, l );
 311                         if( peakpos < 0) peakpos = Map()->GetHitIndex(idx,l);
 312                     } // end if fadc
 313                 }else{ // end fadc>0
 314                     if( on == kTRUE ){
 315                         if( nTsteps > 2 ){
 316                             //  min # of timesteps for a RawCluster
 317                             // Found a RawCluster...
 318                             Int_t stop = l-1;
 319                             time /= (charge/fTimeStep);   // ns
 320                                 // time = lmax*fTimeStep;   // ns
 321                             if( time > fTimeCorr ) time -= fTimeCorr;   // ns
 322                             Float_t theAnode=anode+j*fNofAnodes;
 323                             Double_t anodePath =GetSeg()->GetLocalZFromAnode(theAnode);
 324                             Double_t driftPath = (Double_t)cal->GetDriftPath(time,anode);
 325                             driftPath = fSddLength-driftPath;
 326                             AliITSRawClusterSDD clust(j+1,anode,time,charge,
 327                                                       fmax, peakpos,0.,0.,
 328                                                       driftPath,anodePath,
 329                                                       nTsteps,start,stop,
 330                                                       start, stop, 1, k, k );
 331                             fDetTypeRec->AddCluster( 1, &clust );
 332                             if(AliDebugLevel()>=5) clust.PrintInfo();
 333                             nClu++;
 334                         } // end if nTsteps
 335                         on = kFALSE;
 336                     } // end if on==kTRUE
 337                 } // end if fadc>0
 338             } // samples
 339         } // anodes
 340     } // wings
 341     AliDebug(3,Form("# Rawclusters %d",nClu));
 342     return;
 343 }
 344 //_______________________________________________________________________
 345 Int_t AliITSClusterFinderSDD::SearchPeak(Double_t *spect,Int_t xdim,Int_t zdim,
 346                                          Int_t *peakX, Int_t *peakZ,
 347                                          Double_t *peakAmp, Double_t minpeak ){
 348     // search peaks on a 2D cluster
 349     Int_t npeak = 0;    // # peaks
 350     Int_t i,j;
 351     // search peaks
 352     for( Int_t z=1; z<zdim-1; z++ ){
 353         for( Int_t x=1; x<xdim-2; x++ ){
 354             Double_t sxz = spect[x*zdim+z];
 355             Double_t sxz1 = spect[(x+1)*zdim+z];
 356             Double_t sxz2 = spect[(x-1)*zdim+z];
 357             // search a local max. in s[x,z]
 358             if( sxz < minpeak || sxz1 <= 0 || sxz2 <= 0 ) continue;
 359             if( sxz >= spect[(x+1)*zdim+z  ] && sxz >= spect[(x-1)*zdim+z  ] &&
 360                 sxz >= spect[x*zdim    +z+1] && sxz >= spect[x*zdim    +z-1] &&
 361                 sxz >= spect[(x+1)*zdim+z+1] && sxz >= spect[(x+1)*zdim+z-1] &&
 362                 sxz >= spect[(x-1)*zdim+z+1] && sxz >= spect[(x-1)*zdim+z-1] ){
 363                 // peak found
 364                 peakX[npeak] = x;
 365                 peakZ[npeak] = z;
 366                 peakAmp[npeak] = sxz;
 367                 npeak++;
 368             } // end if ....
 369         } // end for x
 370     } // end for z
 371     // search groups of peaks with same amplitude.
 372     Int_t *flag = new Int_t[npeak];
 373     for( i=0; i<npeak; i++ ) flag[i] = 0;
 374     for( i=0; i<npeak; i++ ){
 375         for( j=0; j<npeak; j++ ){
 376             if( i==j) continue;
 377             if( flag[j] > 0 ) continue;
 378             if( peakAmp[i] == peakAmp[j] &&
 379                 TMath::Abs(peakX[i]-peakX[j])<=1 &&
 380                 TMath::Abs(peakZ[i]-peakZ[j])<=1 ){
 381                 if( flag[i] == 0) flag[i] = i+1;
 382                 flag[j] = flag[i];
 383             } // end if ...
 384         } // end for j
 385     } // end for i
 386     // make average of peak groups
 387     for( i=0; i<npeak; i++ ){
 388         Int_t nFlag = 1;
 389         if( flag[i] <= 0 ) continue;
 390         for( j=0; j<npeak; j++ ){
 391             if( i==j ) continue;
 392             if( flag[j] != flag[i] ) continue;
 393             peakX[i] += peakX[j];
 394             peakZ[i] += peakZ[j];
 395             nFlag++;
 396             npeak--;
 397             for( Int_t k=j; k<npeak; k++ ){
 398                 peakX[k] = peakX[k+1];
 399                 peakZ[k] = peakZ[k+1];
 400                 peakAmp[k] = peakAmp[k+1];
 401                 flag[k] = flag[k+1];
 402             } // end for k
 403             j--;
 404         } // end for j
 405         if( nFlag > 1 ){
 406             peakX[i] /= nFlag;
 407             peakZ[i] /= nFlag;
 408         } // end fi nFlag
 409     } // end for i
 410     delete [] flag;
 411     return( npeak );
 412 }
 413 //______________________________________________________________________
 414 void AliITSClusterFinderSDD::PeakFunc( Int_t xdim, Int_t zdim, Double_t *par,
 415                                        Double_t *spe, Double_t *integral){
 416     // function used to fit the clusters
 417     // par -> parameters..
 418     // par[0]  number of peaks.
 419     // for each peak i=1, ..., par[0]
 420     //                 par[i] = Ampl.
 421     //                 par[i+1] = xpos
 422     //                 par[i+2] = zpos
 423     //                 par[i+3] = tau
 424     //                 par[i+4] = sigma.
 425     Int_t electronics = 1; // 1 = PASCAL, 2 = OLA
 426     const Int_t knParam = 5;
 427     Int_t npeak = (Int_t)par[0];
 428
 429     memset( spe, 0, sizeof( Double_t )*zdim*xdim );
 430
 431     Int_t k = 1;
 432     for( Int_t i=0; i<npeak; i++ ){
 433         if( integral != 0 ) integral[i] = 0.;
 434         Double_t sigmaA2 = par[k+4]*par[k+4]*2.;
 435         Double_t t2 = par[k+3];   // PASCAL
 436         if( electronics == 2 ) { t2 *= t2; t2 *= 2; } // OLA
 437         for( Int_t z=0; z<zdim; z++ ){
 438             for( Int_t x=0; x<xdim; x++ ){
 439                 Double_t z2 = (z-par[k+2])*(z-par[k+2])/sigmaA2;
 440                 Double_t x2 = 0.;
 441                 Double_t signal = 0.;
 442                 if( electronics == 1 ){ // PASCAL
 443                     x2 = (x-par[k+1]+t2)/t2;
 444                     signal = (x2>0.) ? par[k]*x2*exp(-x2+1.-z2) :0.0; // RCCR2
 445                 //  signal =(x2>0.) ? par[k]*x2*x2*exp(-2*x2+2.-z2 ):0.0;//RCCR
 446                 }else if( electronics == 2 ) { // OLA
 447                     x2 = (x-par[k+1])*(x-par[k+1])/t2;
 448                     signal = par[k]  * exp( -x2 - z2 );
 449                 } else {
 450                     Warning("PeakFunc","Wrong SDD Electronics = %d",
 451                             electronics);
 452                     // exit( 1 );
 453                 } // end if electronicx
 454                 spe[x*zdim+z] += signal;
 455                 if( integral != 0 ) integral[i] += signal;
 456             } // end for x
 457         } // end for z
 458         k += knParam;
 459     } // end for i
 460     return;
 461 }
 462 //__________________________________________________________________________
 463 Double_t AliITSClusterFinderSDD::ChiSqr( Int_t xdim, Int_t zdim, Double_t *spe,
 464                                         Double_t *speFit ) const{
 465     // EVALUATES UNNORMALIZED CHI-SQUARED
 466     Double_t chi2 = 0.;
 467     for( Int_t z=0; z<zdim; z++ ){
 468         for( Int_t x=1; x<xdim-1; x++ ){
 469             Int_t index = x*zdim+z;
 470             Double_t tmp = spe[index] - speFit[index];
 471             chi2 += tmp*tmp;
 472         } // end for x
 473     } // end for z
 474     return( chi2 );
 475 }
 476 //_______________________________________________________________________
 477 void AliITSClusterFinderSDD::Minim( Int_t xdim, Int_t zdim, Double_t *param,
 478                                     Double_t *prm0,Double_t *steprm,
 479                                     Double_t *chisqr,Double_t *spe,
 480                                     Double_t *speFit ){
 481     //
 482     Int_t   k, nnn, mmm, i;
 483     Double_t p1, delta, d1, chisq1, p2, chisq2, t, p3, chisq3, a, b, p0, chisqt;
 484     const Int_t knParam = 5;
 485     Int_t npeak = (Int_t)param[0];
 486     for( k=1; k<(npeak*knParam+1); k++ ) prm0[k] = param[k];
 487     for( k=1; k<(npeak*knParam+1); k++ ){
 488         p1 = param[k];
 489         delta = steprm[k];
 490         d1 = delta;
 491         // ENSURE THAT STEP SIZE IS SENSIBLY LARGER THAN MACHINE ROUND OFF
 492         if( TMath::Abs( p1 ) > 1.0E-6 )
 493             if ( TMath::Abs( delta/p1 ) < 1.0E-4 ) delta = p1/1000;
 494             else  delta = (Double_t)1.0E-4;
 495         //  EVALUATE CHI-SQUARED AT FIRST TWO SEARCH POINTS
 496         PeakFunc( xdim, zdim, param, speFit );
 497         chisq1 = ChiSqr( xdim, zdim, spe, speFit );
 498         p2 = p1+delta;
 499         param[k] = p2;
 500         PeakFunc( xdim, zdim, param, speFit );
 501         chisq2 = ChiSqr( xdim, zdim, spe, speFit );
 502         if( chisq1 < chisq2 ){
 503             // REVERSE DIRECTION OF SEARCH IF CHI-SQUARED IS INCREASING
 504             delta = -delta;
 505             t = p1;
 506             p1 = p2;
 507             p2 = t;
 508             t = chisq1;
 509             chisq1 = chisq2;
 510             chisq2 = t;
 511         } // end if
 512         i = 1; nnn = 0;
 513         do {   // INCREMENT param(K) UNTIL CHI-SQUARED STARTS TO INCREASE
 514             nnn++;
 515             p3 = p2 + delta;
 516             mmm = nnn - (nnn/5)*5;  // multiplo de 5
 517             if( mmm == 0 ){
 518                 d1 = delta;
 519                 // INCREASE STEP SIZE IF STEPPING TOWARDS MINIMUM IS TOO SLOW
 520                 delta *= 5;
 521             } // end if
 522             param[k] = p3;
 523             // Constrain paramiters
 524             Int_t kpos = (k-1) % knParam;
 525             switch( kpos ){
 526             case 0 :
 527                 if( param[k] <= 20 ) param[k] = fMinPeak;
 528                 break;
 529             case 1 :
 530                 if( TMath::Abs( param[k] - prm0[k] ) > 1.5 ) param[k] = prm0[k];
 531                 break;
 532             case 2 :
 533                 if( TMath::Abs( param[k] - prm0[k] ) > 1. ) param[k] = prm0[k];
 534                 break;
 535             case 3 :
 536                 if( param[k] < .5 ) param[k] = .5;
 537                 break;
 538             case 4 :
 539                 if( param[k] < .288 ) param[k] = .288;// 1/sqrt(12) = 0.288
 540                 if( param[k] > zdim*.5 ) param[k] = zdim*.5;
 541                 break;
 542             }; // end switch
 543             PeakFunc( xdim, zdim, param, speFit );
 544             chisq3 = ChiSqr( xdim, zdim, spe, speFit );
 545             if( chisq3 < chisq2 && nnn < 50 ){
 546                 p1 = p2;
 547                 p2 = p3;
 548                 chisq1 = chisq2;
 549                 chisq2 = chisq3;
 550             }else i=0;
 551         } while( i );
 552         // FIND MINIMUM OF PARABOLA DEFINED BY LAST THREE POINTS
 553         a = chisq1*(p2-p3)+chisq2*(p3-p1)+chisq3*(p1-p2);
 554         b = chisq1*(p2*p2-p3*p3)+chisq2*(p3*p3-p1*p1)+chisq3*(p1*p1-p2*p2);
 555         if( a!=0 ) p0 = (Double_t)(0.5*b/a);
 556         else p0 = 10000;
 557         //--IN CASE OF NEARLY EQUAL CHI-SQUARED AND TOO SMALL STEP SIZE PREVENT
 558         //   ERRONEOUS EVALUATION OF PARABOLA MINIMUM
 559         //---NEXT TWO LINES CAN BE OMITTED FOR HIGHER PRECISION MACHINES
 560         //dp = (Double_t) max (TMath::Abs(p3-p2), TMath::Abs(p2-p1));
 561         //if( TMath::Abs( p2-p0 ) > dp ) p0 = p2;
 562         param[k] = p0;
 563         // Constrain paramiters
 564         Int_t kpos = (k-1) % knParam;
 565         switch( kpos ){
 566         case 0 :
 567             if( param[k] <= 20 ) param[k] = fMinPeak;
 568             break;
 569         case 1 :
 570             if( TMath::Abs( param[k] - prm0[k] ) > 1.5 ) param[k] = prm0[k];
 571             break;
 572         case 2 :
 573             if( TMath::Abs( param[k] - prm0[k] ) > 1. ) param[k] = prm0[k];
 574             break;
 575         case 3 :
 576             if( param[k] < .5 ) param[k] = .5;
 577             break;
 578         case 4 :
 579             if( param[k] < .288 ) param[k] = .288;  // 1/sqrt(12) = 0.288
 580             if( param[k] > zdim*.5 ) param[k] = zdim*.5;
 581             break;
 582         }; // end switch
 583         PeakFunc( xdim, zdim, param, speFit );
 584         chisqt = ChiSqr( xdim, zdim, spe, speFit );
 585         // DO NOT ALLOW ERRONEOUS INTERPOLATION
 586         if( chisqt <= *chisqr ) *chisqr = chisqt;
 587         else param[k] = prm0[k];
 588         // OPTIMIZE SEARCH STEP FOR EVENTUAL NEXT CALL OF MINIM
 589         steprm[k] = (param[k]-prm0[k])/5;
 590         if( steprm[k] >= d1 ) steprm[k] = d1/5;
 591     } // end for k
 592     // EVALUATE FIT AND CHI-SQUARED FOR OPTIMIZED PARAMETERS
 593     PeakFunc( xdim, zdim, param, speFit );
 594     *chisqr = ChiSqr( xdim, zdim, spe, speFit );
 595     return;
 596 }
 597 //_________________________________________________________________________
 598 Int_t AliITSClusterFinderSDD::NoLinearFit( Int_t xdim, Int_t zdim,
 599                                            Double_t *param, Double_t *spe,
 600                                            Int_t *niter, Double_t *chir ){
 601     // fit method from Comput. Phys. Commun 46(1987) 149
 602     const Double_t kchilmt = 0.01;  //        relative accuracy
 603     const Int_t   knel = 3;        //        for parabolic minimization
 604     const Int_t   knstop = 50;     //        Max. iteration number
 605     const Int_t   knParam = 5;
 606     Int_t npeak = (Int_t)param[0];
 607     // RETURN IF NUMBER OF DEGREES OF FREEDOM IS NOT POSITIVE
 608     if( (xdim*zdim - npeak*knParam) <= 0 ) return( -1 );
 609     Double_t degFree = (xdim*zdim - npeak*knParam)-1;
 610     Int_t   n, k, iterNum = 0;
 611     Double_t *prm0 = new Double_t[npeak*knParam+1];
 612     Double_t *step = new Double_t[npeak*knParam+1];
 613     Double_t *schi = new Double_t[npeak*knParam+1];
 614     Double_t *sprm[3];
 615     sprm[0] = new Double_t[npeak*knParam+1];
 616     sprm[1] = new Double_t[npeak*knParam+1];
 617     sprm[2] = new Double_t[npeak*knParam+1];
 618     Double_t  chi0, chi1, reldif, a, b, prmin, dp;
 619     Double_t *speFit = new Double_t[ xdim*zdim ];
 620     PeakFunc( xdim, zdim, param, speFit );
 621     chi0 = ChiSqr( xdim, zdim, spe, speFit );
 622     chi1 = chi0;
 623     for( k=1; k<(npeak*knParam+1); k++) prm0[k] = param[k];
 624         for( k=1 ; k<(npeak*knParam+1); k+=knParam ){
 625             step[k] = param[k] / 20.0 ;
 626             step[k+1] = param[k+1] / 50.0;
 627             step[k+2] = param[k+2] / 50.0;
 628             step[k+3] = param[k+3] / 20.0;
 629             step[k+4] = param[k+4] / 20.0;
 630         } // end for k
 631     Int_t out = 0;
 632     do{
 633         iterNum++;
 634             chi0 = chi1;
 635             Minim( xdim, zdim, param, prm0, step, &chi1, spe, speFit );
 636             reldif = ( chi1 > 0 ) ? ((Double_t) TMath::Abs( chi1-chi0)/chi1 ) : 0;
 637         // EXIT conditions
 638         if( reldif < (float) kchilmt ){
 639             *chir  = (chi1>0) ? (float) TMath::Sqrt (chi1/degFree) :0;
 640             *niter = iterNum;
 641             out = 0;
 642             break;
 643         } // end if
 644         if( (reldif < (float)(5*kchilmt)) && (iterNum > knstop) ){
 645             *chir = (chi1>0) ?(float) TMath::Sqrt (chi1/degFree):0;
 646             *niter = iterNum;
 647             out = 0;
 648             break;
 649         } // end if
 650         if( iterNum > 5*knstop ){
 651             *chir  = (chi1>0) ?(float) TMath::Sqrt (chi1/degFree):0;
 652             *niter = iterNum;
 653             out = 1;
 654             break;
 655         } // end if
 656         if( iterNum <= knel ) continue;
 657         n = iterNum - (iterNum/knel)*knel; // EXTRAPOLATION LIMIT COUNTER N
 658         if( n > 3 || n == 0 ) continue;
 659         schi[n-1] = chi1;
 660         for( k=1; k<(npeak*knParam+1); k++ ) sprm[n-1][k] = param[k];
 661         if( n != 3 ) continue;
 662         // -EVALUATE EXTRAPOLATED VALUE OF EACH PARAMETER BY FINDING MINIMUM OF
 663         //    PARABOLA DEFINED BY LAST THREE CALLS OF MINIM
 664         for( k=1; k<(npeak*knParam+1); k++ ){
 665             Double_t tmp0 = sprm[0][k];
 666             Double_t tmp1 = sprm[1][k];
 667             Double_t tmp2 = sprm[2][k];
 668             a  = schi[0]*(tmp1-tmp2) + schi[1]*(tmp2-tmp0);
 669             a += (schi[2]*(tmp0-tmp1));
 670             b  = schi[0]*(tmp1*tmp1-tmp2*tmp2);
 671             b += (schi[1]*(tmp2*tmp2-tmp0*tmp0)+(schi[2]*
 672                                              (tmp0*tmp0-tmp1*tmp1)));
 673             if ((double)a < 1.0E-6) prmin = 0;
 674             else prmin = (float) (0.5*b/a);
 675             dp = 5*(tmp2-tmp0);
 676             if( TMath::Abs(prmin-tmp2) > TMath::Abs(dp) ) prmin = tmp2+dp;
 677             param[k] = prmin;
 678             step[k]  = dp/10; // OPTIMIZE SEARCH STEP
 679         } // end for k
 680     } while( kTRUE );
 681     delete [] prm0;
 682     delete [] step;
 683     delete [] schi;
 684     delete [] sprm[0];
 685     delete [] sprm[1];
 686     delete [] sprm[2];
 687     delete [] speFit;
 688     return( out );
 689 }
 690
 691 //______________________________________________________________________
 692 void AliITSClusterFinderSDD::ResolveClusters(){
 693     // The function to resolve clusters if the clusters overlapping exists
 694     Int_t i;
 695     // get number of clusters for this module
 696     Int_t nofClusters = NClusters();
 697     nofClusters -= fNclusters;
 698     Int_t fNofMaps = GetSeg()->Npz();
 699     Int_t fNofAnodes = fNofMaps/2;
 700     //Int_t fMaxNofSamples = GetSeg()->Npx();
 701     Int_t dummy=0;
 702     Double_t fTimeStep = GetSeg()->Dpx( dummy );
 703     Double_t fSddLength = GetSeg()->Dx();
 704     Double_t anodePitch = GetSeg()->Dpz( dummy );
 705     Int_t electronics =1;//GetResp(fModule)->GetElectronics(); // 1 = PASCAL, 2 = OLA
 706     AliITSCalibrationSDD* cal = (AliITSCalibrationSDD*)GetResp(fModule);
 707     Bool_t isZeroSupp=cal->GetZeroSupp();
 708
 709
 710
 711     for( Int_t j=0; j<nofClusters; j++ ){
 712         // get cluster information
 713         AliITSRawClusterSDD *clusterJ=(AliITSRawClusterSDD*) Cluster(j);
 714         Int_t astart = clusterJ->Astart();
 715         Int_t astop = clusterJ->Astop();
 716         Int_t tstart = clusterJ->Tstartf();
 717         Int_t tstop = clusterJ->Tstopf();
 718         Int_t wing = (Int_t)clusterJ->W();
 719         if( wing == 2 ){
 720             astart += fNofAnodes;
 721             astop  += fNofAnodes;
 722         } // end if
 723         Int_t xdim = tstop-tstart+3;
 724         Int_t zdim = astop-astart+3;
 725         if( xdim > 50 || zdim > 30 ) {
 726             Warning("ResolveClusters","xdim: %d , zdim: %d ",xdim,zdim);
 727             continue;
 728         }
 729         Double_t *sp = new Double_t[ xdim*zdim+1 ];
 730         memset( sp, 0, sizeof(Double_t)*(xdim*zdim+1) );
 731
 732         // make a local map from cluster region
 733         for( Int_t ianode=astart; ianode<=astop; ianode++ ){
 734             for( Int_t itime=tstart; itime<=tstop; itime++ ){
 735                 Double_t fadc = Map()->GetSignal( ianode, itime );
 736                 if(!isZeroSupp){
 737                   Double_t baseline=GetResp(fModule)->GetBaseline(ianode);
 738                   if( fadc > baseline ) fadc -= (Double_t)baseline;
 739                   else fadc = 0.;
 740                 }
 741                 Int_t index = (itime-tstart+1)*zdim+(ianode-astart+1);
 742                 sp[index] = fadc;
 743             } // time loop
 744         } // anode loop
 745
 746         // search peaks on cluster
 747         const Int_t kNp = 150;
 748         Int_t peakX1[kNp];
 749         Int_t peakZ1[kNp];
 750         Double_t peakAmp1[kNp];
 751         Int_t npeak = SearchPeak(sp,xdim,zdim,peakX1,peakZ1,peakAmp1,fMinPeak);
 752
 753         // if multiple peaks, split cluster
 754         if( npeak >= 1 ){
 755             //        cout << "npeak " << npeak << endl;
 756             //        clusterJ->PrintInfo();
 757             Double_t *par = new Double_t[npeak*5+1];
 758             par[0] = (Double_t)npeak;
 759             // Initial parameters in cell dimentions
 760             Int_t k1 = 1;
 761             for( i=0; i<npeak; i++ ){
 762                 par[k1] = peakAmp1[i];
 763                 par[k1+1] = peakX1[i]; // local time pos. [timebin]
 764                 par[k1+2] = peakZ1[i]; // local anode pos. [anodepitch]
 765                 if( electronics == 1 ) par[k1+3] = 2.; // PASCAL
 766                 else if(electronics==2) par[k1+3] = 0.7;//tau [timebin] OLA
 767                 par[k1+4] = .4;    // sigma        [anodepich]
 768                 k1 += 5;
 769             } // end for i
 770             Int_t niter;
 771             Double_t chir;
 772             NoLinearFit( xdim, zdim, par, sp, &niter, &chir );
 773             Double_t peakX[kNp];
 774             Double_t peakZ[kNp];
 775             Double_t sigma[kNp];
 776             Double_t tau[kNp];
 777             Double_t peakAmp[kNp];
 778             Double_t integral[kNp];
 779             //get integrals => charge for each peak
 780             PeakFunc( xdim, zdim, par, sp, integral );
 781             k1 = 1;
 782             for( i=0; i<npeak; i++ ){
 783                 peakAmp[i] = par[k1];
 784                 peakX[i]   = par[k1+1];
 785                 peakZ[i]   = par[k1+2];
 786                 tau[i]     = par[k1+3];
 787                 sigma[i]   = par[k1+4];
 788                 k1+=5;
 789             } // end for i
 790             // calculate parameter for new clusters
 791             for( i=0; i<npeak; i++ ){
 792                 AliITSRawClusterSDD clusterI( *clusterJ );
 793
 794                 Int_t newAnode = peakZ1[i]-1 + astart;
 795
 796             //    Int_t newiTime = peakX1[i]-1 + tstart;
 797             //    Int_t shift = (Int_t)(fTimeCorr/fTimeStep + 0.5);
 798             //    if( newiTime > shift && newiTime < (fMaxNofSamples-shift) )
 799             //        shift = 0;
 800             //    Int_t peakpos = Map()->GetHitIndex(newAnode,newiTime+shift );
 801             //    clusterI.SetPeakPos( peakpos );
 802
 803                 clusterI.SetPeakAmpl( peakAmp1[i] );
 804                 Double_t newAnodef = peakZ[i] - 0.5 + astart;
 805                 Double_t newiTimef = peakX[i] - 1 + tstart;
 806                 if( wing == 2 ) newAnodef -= fNofAnodes;
 807                 Double_t anodePath = (newAnodef - fNofAnodes/2)*anodePitch;
 808                 newiTimef *= fTimeStep;
 809                 if( newiTimef > fTimeCorr ) newiTimef -= fTimeCorr;
 810                 if( electronics == 1 ){
 811                 //    newiTimef *= 0.999438;    // PASCAL
 812                 //    newiTimef += (6./fDriftSpeed - newiTimef/3000.);
 813                 }else if( electronics == 2 )
 814                     newiTimef *= 0.99714;    // OLA
 815
 816                 Int_t timeBin = (Int_t)(newiTimef/fTimeStep+0.5);
 817                 Int_t peakpos = Map()->GetHitIndex( newAnode, timeBin );
 818                 if( peakpos < 0 ) {
 819                     for( Int_t ii=0; ii<3; ii++ ) {
 820                         peakpos = Map()->GetHitIndex( newAnode, timeBin+ii );
 821                         if( peakpos > 0 ) break;
 822                         peakpos = Map()->GetHitIndex( newAnode, timeBin-ii );
 823                         if( peakpos > 0 ) break;
 824                     }
 825                 }
 826
 827                 if( peakpos < 0 ) {
 828                     //Warning("ResolveClusters",
 829                     //        "Digit not found for cluster");
 830                     //if(AliDebugLevel()>=3) clusterI.PrintInfo();
 831                    continue;
 832                 }
 833                 clusterI.SetPeakPos( peakpos );
 834                 Float_t dp = cal->GetDriftPath(newiTimef,newAnodef);
 835                 Float_t driftPath = fSddLength - (Double_t)dp;
 836                 Float_t sign = ( wing == 1 ) ? -1. : 1.;
 837                 Float_t xcoord = driftPath*sign * 0.0001;
 838                 Float_t zcoord = anodePath * 0.0001;
 839                 Float_t corrx=0, corrz=0;
 840                 cal->GetCorrections(zcoord,xcoord,corrz,corrx,GetSeg());
 841                 xcoord+=corrx;
 842                 zcoord+=corrz;
 843                 clusterI.SetX( xcoord );
 844                 clusterI.SetZ( zcoord );
 845                 clusterI.SetAnode( newAnodef );
 846                 clusterI.SetTime( newiTimef );
 847                 clusterI.SetAsigma( sigma[i]*anodePitch );
 848                 clusterI.SetTsigma( tau[i]*fTimeStep );
 849                 clusterI.SetQ( integral[i] );
 850
 851                 fDetTypeRec->AddCluster( 1, &clusterI );
 852             } // end for i
 853             Clusters()->RemoveAt( j );
 854             delete [] par;
 855         } else {  // something odd
 856             Warning( "ResolveClusters",
 857                      "--- Peak not found!!!!  minpeak=%d ,cluster peak= %f"
 858                      " , module= %d",
 859                      fMinPeak, clusterJ->PeakAmpl(),GetModule());
 860             clusterJ->PrintInfo();
 861             Warning( "ResolveClusters"," xdim= %d zdim= %d", xdim-2, zdim-2 );
 862         }
 863         delete [] sp;
 864     } // cluster loop
 865     Clusters()->Compress();
 866 //    Map()->ClearMap();
 867 }
 868 //________________________________________________________________________
 869 void  AliITSClusterFinderSDD::GroupClusters(){
 870     // group clusters
 871     Int_t dummy=0;
 872     Double_t fTimeStep = GetSeg()->Dpx(dummy);
 873     // get number of clusters for this module
 874     Int_t nofClusters = NClusters();
 875     nofClusters -= fNclusters;
 876     AliITSRawClusterSDD *clusterI;
 877     AliITSRawClusterSDD *clusterJ;
 878     Int_t *label = new Int_t [nofClusters];
 879     Int_t i,j;
 880     for(i=0; i<nofClusters; i++) label[i] = 0;
 881     for(i=0; i<nofClusters; i++) {
 882         if(label[i] != 0) continue;
 883         for(j=i+1; j<nofClusters; j++) {
 884             if(label[j] != 0) continue;
 885             clusterI = (AliITSRawClusterSDD*) Cluster(i);
 886             clusterJ = (AliITSRawClusterSDD*) Cluster(j);
 887             // 1.3 good
 888             if(clusterI->T() < fTimeStep*60) fDAnode = 4.2;  // TB 3.2
 889             if(clusterI->T() < fTimeStep*10) fDAnode = 1.5;  // TB 1.
 890             Bool_t pair = clusterI->Brother(clusterJ,fDAnode,fDTime);
 891             if(!pair) continue;
 892             if(AliDebugLevel()>=4){
 893                 clusterI->PrintInfo();
 894                 clusterJ->PrintInfo();
 895             } // end if AliDebugLevel
 896             clusterI->Add(clusterJ);
 897             label[j] = 1;
 898             Clusters()->RemoveAt(j);
 899             j=i; // <- Ernesto
 900         } // J clusters
 901         label[i] = 1;
 902     } // I clusters
 903     Clusters()->Compress();
 904
 905     delete [] label;
 906     return;
 907 }
 908 //________________________________________________________________________
 909 void AliITSClusterFinderSDD::SelectClusters(){
 910     // get number of clusters for this module
 911     Int_t nofClusters = NClusters();
 912
 913     nofClusters -= fNclusters;
 914     Int_t i;
 915     for(i=0; i<nofClusters; i++) {
 916         AliITSRawClusterSDD *clusterI =(AliITSRawClusterSDD*) Cluster(i);
 917         Int_t rmflg = 0;
 918         Double_t wy = 0.;
 919         if(clusterI->Anodes() != 0.) {
 920             wy = ((Double_t) clusterI->Samples())/clusterI->Anodes();
 921         } // end if
 922         Int_t amp = (Int_t) clusterI->PeakAmpl();
 923         Int_t cha = (Int_t) clusterI->Q();
 924         if(amp < fMinPeak) rmflg = 1;
 925         if(cha < fMinCharge) rmflg = 1;
 926         if(wy < fMinNCells) rmflg = 1;
 927         //if(wy > fMaxNCells) rmflg = 1;
 928         if(rmflg) Clusters()->RemoveAt(i);
 929     } // I clusters
 930     Clusters()->Compress();
 931     return;
 932 }
 933
 934 //______________________________________________________________________
 935 void AliITSClusterFinderSDD::GetRecPoints(AliITSCalibrationSDD* cal){
 936     // get rec points
 937
 938     // get number of clusters for this module
 939     Int_t nofClusters = NClusters();
 940     nofClusters -= fNclusters;
 941     const Double_t kconvGeV = 1.e-6; // GeV -> KeV
 942     const Double_t kconv = 1.0e-4;
 943     const Double_t kcmToMicrons = 10000.;
 944     const Double_t kRMSx = 38.0*kconv; // microns->cm ITS TDR Table 1.3
 945     const Double_t kRMSz = 28.0*kconv; // microns->cm ITS TDR Table 1.3
 946     Int_t nAnodes=GetSeg()->NpzHalf();
 947     Int_t i;
 948     Int_t ix, iz, idx=-1;
 949     AliITSdigitSDD *dig=0;
 950     Int_t ndigits=NDigits();
 951
 952     Int_t lay,lad,det;
 953     fDetTypeRec->GetITSgeom()->GetModuleId(fModule,lay,lad,det);
 954     Int_t ind=(lad-1)*fDetTypeRec->GetITSgeom()->GetNdetectors(lay)+(det-1);
 955     Int_t lyr=(lay-1);
 956
 957
 958     for(i=0; i<nofClusters; i++) {
 959         AliITSRawClusterSDD *clusterI = (AliITSRawClusterSDD*)Cluster(i);
 960         if(!clusterI) Error("SDD: GetRecPoints","i clusterI ",i,clusterI);
 961         if(clusterI) idx=clusterI->PeakPos();
 962         if(idx>ndigits) Error("SDD: GetRecPoints","idx ndigits",idx,ndigits);
 963         // try peak neighbours - to be done
 964         if(idx&&idx<= ndigits) dig =(AliITSdigitSDD*)GetDigit(idx);
 965         if(!dig) {
 966             // try cog
 967             Float_t xMicrons=clusterI->X()*kcmToMicrons;
 968             Float_t zMicrons=clusterI->Z()*kcmToMicrons;
 969             Float_t zAnode=zMicrons/GetSeg()->Dpz(0)+nAnodes/2;
 970             Float_t driftSpeed=cal->GetDriftSpeedAtAnode(zAnode);
 971             Float_t driftPath=GetSeg()->Dx()-TMath::Abs(xMicrons);
 972             ix=1+(Int_t)(driftPath/driftSpeed/GetSeg()->Dpx(0));
 973             iz=1+(Int_t)zAnode;
 974             if(xMicrons>0) iz+=nAnodes;
 975             dig = (AliITSdigitSDD*)Map()->GetHit(iz-1,ix-1);
 976             // if null try neighbours
 977             if (!dig) dig = (AliITSdigitSDD*)Map()->GetHit(iz-1,ix);
 978             if (!dig) dig = (AliITSdigitSDD*)Map()->GetHit(iz-1,ix+1);
 979             if (!dig) printf("SDD: cannot assign the track number!\n");
 980         } //  end if !dig
 981
 982         Int_t lab[4] = {-3141593,-3141593,-3141593,ind};
 983         if (dig) {
 984           lab[0] = dig->GetTrack(0);
 985           lab[1] = dig->GetTrack(1);
 986           lab[2] = dig->GetTrack(2);
 987         }
 988         Float_t hit[5] = {clusterI->X(),clusterI->Z(),kRMSx*kRMSx,kRMSz*kRMSz,clusterI->Q()};
 989         Int_t info[3] = {0,0,lyr};
 990
 991         AliITSRecPoint rnew(lab,hit,info,kTRUE);
 992         rnew.SetdEdX(kconvGeV*clusterI->Q());
 993
 994         fDetTypeRec->AddRecPoint(rnew);
 995     } // I clusters
 996 //    Map()->ClearMap();
 997 }
 998 //______________________________________________________________________
 999 void AliITSClusterFinderSDD::FindRawClusters(Int_t mod){
1000     // find raw clusters
1001
1002     SetModule(mod);
1003     SetCutAmplitude(mod);
1004     AliITSCalibrationSDD* cal = (AliITSCalibrationSDD*)GetResp(mod);
1005     Int_t nanodes=GetSeg()->Npz();
1006     Int_t noise=0;
1007     for(Int_t i=0;i<nanodes;i++){
1008       noise+=(Int_t)cal->GetNoiseAfterElectronics(i);
1009     }
1010     SetMinPeak((noise/nanodes)*5);
1011     Find1DClustersE();
1012     GroupClusters();
1013     SelectClusters();
1014     ResolveClusters();
1015     GetRecPoints(cal);
1016 }
1017 //_______________________________________________________________________
1018 void AliITSClusterFinderSDD::PrintStatus() const{
1019     // Print SDD cluster finder Parameters
1020
1021     cout << "**************************************************" << endl;
1022     cout << " Silicon Drift Detector Cluster Finder Parameters " << endl;
1023     cout << "**************************************************" << endl;
1024     cout << "Number of Clusters: " << fNclusters << endl;
1025     cout << "Anode Tolerance: " << fDAnode << endl;
1026     cout << "Time  Tolerance: " << fDTime << endl;
1027     cout << "Time  correction (electronics): " << fTimeCorr << endl;
1028     cout << "Cut Amplitude (threshold): " << fCutAmplitude[0] << endl;
1029     cout << "Minimum Amplitude: " << fMinPeak << endl;
1030     cout << "Minimum Charge: " << fMinCharge << endl;
1031     cout << "Minimum number of cells/clusters: " << fMinNCells << endl;
1032     cout << "Maximum number of cells/clusters: " << fMaxNCells << endl;
1033     cout << "**************************************************" << endl;
1034 }
1035
1036