1 /**************************************************************************
2 * Copyright(c) 2007-2009, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
18 ////////////////////////////////////////////////////////////////////////////
19 // Implementation of the ITS clusterer V2 class //
21 // Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch //
22 // Revised: Enrico Fragiacomo, enrico.fragiacomo@ts.infn.it //
24 ///////////////////////////////////////////////////////////////////////////
26 #include <Riostream.h>
29 #include "AliITSClusterFinderV2SSD.h"
30 #include "AliITSRecPoint.h"
31 #include "AliITSgeomTGeo.h"
32 #include "AliITSDetTypeRec.h"
33 #include "AliRawReader.h"
34 #include "AliITSRawStreamSSD.h"
35 #include <TClonesArray.h>
36 #include "AliITSdigitSSD.h"
37 #include "AliITSReconstructor.h"
38 #include "AliITSCalibrationSSD.h"
40 Short_t *AliITSClusterFinderV2SSD::fgPairs = 0x0;
41 Int_t AliITSClusterFinderV2SSD::fgPairsSize = 0;
43 ClassImp(AliITSClusterFinderV2SSD)
46 AliITSClusterFinderV2SSD::AliITSClusterFinderV2SSD(AliITSDetTypeRec* dettyp):AliITSClusterFinderV2(dettyp),
47 fLastSSD1(AliITSgeomTGeo::GetModuleIndex(6,1,1)-1),
58 //______________________________________________________________________
59 AliITSClusterFinderV2SSD::AliITSClusterFinderV2SSD(const AliITSClusterFinderV2SSD &cf) : AliITSClusterFinderV2(cf), fLastSSD1(cf.fLastSSD1),
60 fYpitchSSD(cf.fYpitchSSD),
70 //______________________________________________________________________
71 AliITSClusterFinderV2SSD& AliITSClusterFinderV2SSD::operator=(const AliITSClusterFinderV2SSD& cf ){
72 // Assignment operator
74 this->~AliITSClusterFinderV2SSD();
75 new(this) AliITSClusterFinderV2SSD(cf);
80 void AliITSClusterFinderV2SSD::FindRawClusters(Int_t mod){
84 FindClustersSSD(fDigits);
88 void AliITSClusterFinderV2SSD::FindClustersSSD(TClonesArray *alldigits) {
89 //------------------------------------------------------------
90 // Actual SSD cluster finder
91 //------------------------------------------------------------
93 static AliITSRecoParam *repa = NULL;
95 repa = (AliITSRecoParam*) AliITSReconstructor::GetRecoParam();
97 repa = AliITSRecoParam::GetHighFluxParam();
98 AliWarning("Using default AliITSRecoParam class");
102 AliITSCalibrationSSD* cal = (AliITSCalibrationSSD*)GetResp(fModule);
105 Int_t smaxall=alldigits->GetEntriesFast();
106 if (smaxall==0) return;
107 // TObjArray *digits = new TObjArray;
109 for (Int_t i=0;i<smaxall; i++){
110 AliITSdigitSSD *d=(AliITSdigitSSD*)alldigits->UncheckedAt(i);
112 if(d->IsSideP()) gain = cal->GetGainP(d->GetStripNumber());
113 else gain = cal->GetGainN(d->GetStripNumber());
115 Float_t q=gain*d->GetSignal(); // calibration brings mip peaks around 120 (in ADC units)
116 q=cal->ADCToKeV(q); // converts the charge in KeV from ADC units
117 //Float_t q=d->GetSignal()/4.29;// temp. fix (for PID purposed - normalis. to be checked)
118 d->SetSignal(Int_t(q));
120 if (d->GetSignal()<3) continue;
123 Int_t smax = digits.GetEntriesFast();
126 const Int_t kMax=1000;
128 Ali1Dcluster pos[kMax], neg[kMax];
129 Float_t y=0., q=0., qmax=0.;
130 Int_t lab[4]={-2,-2,-2,-2};
132 AliITSdigitSSD *d=(AliITSdigitSSD*)digits.UncheckedAt(0);
134 y += d->GetCoord2()*d->GetSignal();
136 lab[0]=d->GetTrack(0); lab[1]=d->GetTrack(1); lab[2]=d->GetTrack(2);
137 Int_t curr=d->GetCoord2();
138 Int_t flag=d->GetCoord1();
143 for (Int_t ilab=0;ilab<10;ilab++){
146 milab[0]=d->GetTrack(0); milab[1]=d->GetTrack(1); milab[2]=d->GetTrack(2);
148 for (Int_t s=1; s<smax; s++) {
149 d=(AliITSdigitSSD*)digits.UncheckedAt(s);
150 Int_t strip=d->GetCoord2();
151 if ((strip-curr) > 1 || flag!=d->GetCoord1()) {
156 c[*n].SetLabels(milab);
158 if(repa->GetUseUnfoldingInClusterFinderSSD()==kTRUE) {
160 //Split suspiciously big cluster
162 c[*n].SetY(y/q-0.25*nd);
166 Error("FindClustersSSD","Too many 1D clusters !");
169 c[*n].SetY(y/q+0.25*nd);
172 c[*n].SetLabels(milab);
179 Error("FindClustersSSD","Too many 1D clusters !");
184 lab[0]=lab[1]=lab[2]=-2;
186 for (Int_t ilab=0;ilab<10;ilab++){
190 if (flag!=d->GetCoord1()) { n=&np; c=pos; }
194 y += d->GetCoord2()*d->GetSignal();
196 if (d->GetSignal()>qmax) {
198 lab[0]=d->GetTrack(0); lab[1]=d->GetTrack(1); lab[2]=d->GetTrack(2);
200 for (Int_t ilab=0;ilab<10;ilab++) {
201 if (d->GetTrack(ilab)>=0) AddLabel(milab, (d->GetTrack(ilab)));
208 c[*n].SetLabels(lab);
210 if(repa->GetUseUnfoldingInClusterFinderSSD()==kTRUE) {
212 //Split suspiciously big cluster
214 c[*n].SetY(y/q-0.25*nd);
218 Error("FindClustersSSD","Too many 1D clusters !");
221 c[*n].SetY(y/q+0.25*nd);
224 c[*n].SetLabels(lab);
230 Error("FindClustersSSD","Too many 1D clusters !");
234 FindClustersSSD(neg, nn, pos, np);
238 void AliITSClusterFinderV2SSD::RawdataToClusters(AliRawReader* rawReader,TClonesArray** clusters){
240 //------------------------------------------------------------
241 // This function creates ITS clusters from raw data
242 //------------------------------------------------------------
245 const UInt_t *evid; evid = rawReader->GetEventId();
246 cout<<"Event="<<evid[0]<<endl;
248 AliITSRawStreamSSD inputSSD(rawReader);
249 // rawReader->SelectEquipment(-1,0,15);
250 FindClustersSSD(&inputSSD,clusters);
254 void AliITSClusterFinderV2SSD::FindClustersSSD(AliITSRawStreamSSD* input,
255 TClonesArray** clusters)
257 //------------------------------------------------------------
258 // Actual SSD cluster finder for raw data
259 //------------------------------------------------------------
261 static AliITSRecoParam *repa = NULL;
263 repa = (AliITSRecoParam*) AliITSReconstructor::GetRecoParam();
265 repa = AliITSRecoParam::GetHighFluxParam();
266 AliWarning("Using default AliITSRecoParam class");
270 Int_t nClustersSSD = 0;
271 const Int_t kMax = 1000;
272 Ali1Dcluster clusters1D[2][kMax];
273 Int_t nClusters[2] = {0, 0};
274 Int_t lab[3]={-2,-2,-2};
280 // Float_t pedestal=0.;
282 AliITSCalibrationSSD* cal=NULL;
284 Int_t matrix[12][1536];
291 Int_t osignal = 65535;
295 // read raw data input stream
298 // reset signal matrix
299 for(Int_t i=0; i<12; i++) { for(Int_t j=0; j<1536; j++) { matrix[i][j] = 65535;} }
303 matrix[oadc][ostrip] = osignal; // recover data from previous occurence of input->Next()
306 // buffer data for ddl=iddl and ad=iad
309 next = input->Next();
310 if((!next)&&(input->flag)) continue;
311 Int_t ddl=input->GetDDL();
312 Int_t ad=input->GetAD();
313 Int_t adc = input->GetADC(); adc = (adc<6)? adc : adc - 2;
314 Int_t strip = input->GetStrip();
315 if(input->GetSideFlag()) strip=1535-strip;
316 Int_t signal = input->GetSignal();
317 //cout<<ddl<<" "<<ad<<" "<<adc<<" "<<strip<<" "<<signal<<endl;
319 if((ddl==iddl)&&(ad==iad)) {n++; matrix[adc][strip] = signal;}
320 else {oddl=iddl; oad=iad; oadc = adc; ostrip = strip; osignal=signal; iddl=ddl; iad=ad; break;}
322 if(!next) {oddl=iddl; oad=iad; oadc = adc; ostrip = strip; osignal=signal; iddl=ddl; iad=ad; break;}
327 if(!next && oddl<0) break;
329 if(n==0) continue; // first occurence
333 for(Int_t iadc=0; iadc<12; iadc++) { // loop over ADC index for ddl=oddl and ad=oad
335 Int_t iimod = (oad - 1) * 12 + iadc;
336 Int_t iModule = AliITSRawStreamSSD::GetModuleNumber(oddl,iimod);
337 if(iModule==-1) continue;
338 // cout<<"ddl="<<oddl<<" ad"<<oad<<" module="<<iModule<<endl;
339 cal = (AliITSCalibrationSSD*)GetResp(iModule);
344 for(Int_t istrip=0; istrip<768; istrip++) { // P-side
345 Int_t signal = matrix[iadc][istrip];
346 pedestal = cal->GetPedestalP(istrip);
347 matrix[iadc][istrip]=signal-(Int_t)pedestal;
353 for(Int_t l=0; l<6; l++) {
355 for(Int_t n=20; n<108; n++) cmode+=matrix[iadc][l*128+n];
357 for(Int_t n=0; n<128; n++) matrix[iadc][l*128+n]-=(Int_t)cmode;
363 for(istrip=0; istrip<768; istrip++) { // P-side
365 Int_t signal = TMath::Abs(matrix[iadc][istrip]);
368 noise = cal->GetNoiseP(istrip); if(noise<1.) signal = 65535;
369 if(signal<3*noise) signal = 65535; // in case ZS was not done in hw do it now
371 //if(cal->IsPChannelBad(istrip)) cout<<iModule<<" "<<istrip<<endl;
372 if(cal->IsPChannelBad(istrip)) signal=0;
375 gain = cal->GetGainP(istrip);
376 signal = (Int_t) ( signal * gain ); // signal is corrected for gain
377 signal = (Int_t) cal->ADCToKeV( signal ); // signal is converted in KeV
379 q += signal; // add digit to current cluster
380 y += istrip * signal;
387 if ( ( (nDigits==1) && ( (q==0) || (q>5*oldnoise)) ) || (nDigits>1) ) {
389 Ali1Dcluster& cluster = clusters1D[0][nClusters[0]++];
391 if(q!=0) cluster.SetY(y/q);
392 else cluster.SetY(istrip-1);
395 cluster.SetNd(nDigits);
396 cluster.SetLabels(lab);
398 if(repa->GetUseUnfoldingInClusterFinderSSD()==kTRUE) {
400 //Split suspiciously big cluster
401 if (nDigits > 4&&nDigits < 25) {
402 if(q!=0) cluster.SetY(y/q - 0.25*nDigits);
403 else cluster.SetY(istrip-1 - 0.25*nDigits);
405 if (nClusters[0] == kMax) {
406 Error("FindClustersSSD", "Too many 1D clusters !");
409 Ali1Dcluster& cluster2 = clusters1D[0][nClusters[0]++];
410 if(q!=0) cluster2.SetY(y/q + 0.25*nDigits);
411 else cluster2.SetY(istrip-1 + 0.25*nDigits);
412 cluster2.SetQ(0.5*q);
413 cluster2.SetNd(nDigits);
414 cluster2.SetLabels(lab);
424 } // loop over strip on P-side
426 // if last strip does have signal
429 if ( ( (nDigits==1) && ( (q==0) || (q>5*oldnoise)) ) || (nDigits>1) ) {
431 Ali1Dcluster& cluster = clusters1D[0][nClusters[0]++];
433 if(q!=0) cluster.SetY(y/q);
434 else cluster.SetY(istrip-1);
437 cluster.SetNd(nDigits);
438 cluster.SetLabels(lab);
440 if(repa->GetUseUnfoldingInClusterFinderSSD()==kTRUE) {
442 //Split suspiciously big cluster
443 if (nDigits > 4&&nDigits < 25) {
444 if(q!=0) cluster.SetY(y/q - 0.25*nDigits);
445 else cluster.SetY(istrip-1 - 0.25*nDigits);
447 if (nClusters[0] == kMax) {
448 Error("FindClustersSSD", "Too many 1D clusters !");
451 Ali1Dcluster& cluster2 = clusters1D[0][nClusters[0]++];
452 if(q!=0) cluster2.SetY(y/q + 0.25*nDigits);
453 else cluster2.SetY(istrip-1 + 0.25*nDigits);
454 cluster2.SetQ(0.5*q);
455 cluster2.SetNd(nDigits);
456 cluster2.SetLabels(lab);
467 for(Int_t istrip=768; istrip<1536; istrip++) { // P-side
468 Int_t signal = matrix[iadc][istrip];
469 pedestal = cal->GetPedestalN(1535-istrip);
470 matrix[iadc][istrip]=signal-(Int_t)pedestal;
475 for(Int_t l=6; l<12; l++) {
477 for(Int_t n=20; n<108; n++) cmode+=matrix[iadc][l*128+n];
479 for(Int_t n=0; n<128; n++) matrix[iadc][l*128+n]-=(Int_t)cmode;
486 for(Int_t iistrip=768; iistrip<1536; iistrip++) { // N-side
488 Int_t signal = TMath::Abs(matrix[iadc][iistrip]);
489 //cout<<"####"<<" "<<oddl<<" "<<oad<<" "<<iadc<<" "<<iistrip<<" "<<signal<<endl;
490 strip = 1535-iistrip;
493 noise = cal->GetNoiseN(strip); if(noise<1.) signal=65535;
495 if(cal->IsNChannelBad(strip)) signal=0;
497 if(signal<3*noise) signal = 65535; // in case ZS was not done in hw do it now
500 // cout<<"ddl="<<oddl<<" ad"<<oad<<" module="<<iModule<<" strip= "<<iistrip<<
501 // " sig="<<signal<<" "<<cal->GetPedestalN(strip)<<endl;
502 gain = cal->GetGainN(strip);
503 signal = (Int_t) ( signal * gain); // signal is corrected for gain
504 signal = (Int_t) cal->ADCToKeV( signal ); // signal is converted in KeV
506 // add digit to current cluster
515 if ( ( (nDigits==1) && ( (q==0) || (q>5*oldnoise)) ) || (nDigits>1) ) {
517 Ali1Dcluster& cluster = clusters1D[1][nClusters[1]++];
519 if(q!=0) cluster.SetY(y/q);
520 else cluster.SetY(strip+1);
523 cluster.SetNd(nDigits);
524 cluster.SetLabels(lab);
526 if(repa->GetUseUnfoldingInClusterFinderSSD()==kTRUE) {
528 //Split suspiciously big cluster
529 if (nDigits > 4&&nDigits < 25) {
530 cluster.SetY(y/q - 0.25*nDigits);
532 if (nClusters[1] == kMax) {
533 Error("FindClustersSSD", "Too many 1D clusters !");
536 Ali1Dcluster& cluster2 = clusters1D[1][nClusters[1]++];
537 cluster2.SetY(y/q + 0.25*nDigits);
538 cluster2.SetQ(0.5*q);
539 cluster2.SetNd(nDigits);
540 cluster2.SetLabels(lab);
550 } // loop over strips on N-side
554 if ( ( (nDigits==1) && ( (q==0) || (q>5*oldnoise)) ) || (nDigits>1) ) {
556 Ali1Dcluster& cluster = clusters1D[1][nClusters[1]++];
558 if(q!=0) cluster.SetY(y/q);
559 else cluster.SetY(strip+1);
562 cluster.SetNd(nDigits);
563 cluster.SetLabels(lab);
565 if(repa->GetUseUnfoldingInClusterFinderSSD()==kTRUE) {
567 //Split suspiciously big cluster
568 if (nDigits > 4&&nDigits < 25) {
569 if(q!=0) cluster.SetY(y/q - 0.25*nDigits);
570 else cluster.SetY(strip+1 - 0.25*nDigits);
572 if (nClusters[1] == kMax) {
573 Error("FindClustersSSD", "Too many 1D clusters !");
576 Ali1Dcluster& cluster2 = clusters1D[1][nClusters[1]++];
577 if(q!=0) cluster2.SetY(y/q + 0.25*nDigits);
578 else cluster2.SetY(strip+1 + 0.25*nDigits);
579 cluster2.SetQ(0.5*q);
580 cluster2.SetNd(nDigits);
581 cluster2.SetLabels(lab);
592 if((nClusters[0])&&(nClusters[1])) {
594 clusters[iModule] = new TClonesArray("AliITSRecPoint");
596 FindClustersSSD(&clusters1D[0][0], nClusters[0],
597 &clusters1D[1][0], nClusters[1], clusters[iModule]);
598 Int_t nClustersn = clusters[iModule]->GetEntriesFast();
599 nClustersSSD += nClustersn;
602 nClusters[0] = nClusters[1] = 0;
611 Info("FindClustersSSD", "found clusters in ITS SSD: %d", nClustersSSD);
614 void AliITSClusterFinderV2SSD::
615 FindClustersSSD(Ali1Dcluster* neg, Int_t nn,
616 Ali1Dcluster* pos, Int_t np,
617 TClonesArray *clusters) {
618 //------------------------------------------------------------
619 // Actual SSD cluster finder
620 //------------------------------------------------------------
624 const TGeoHMatrix *mT2L=AliITSgeomTGeo::GetTracking2LocalMatrix(fModule);
626 TClonesArray &cl=*clusters;
628 Float_t tanp=fTanP, tann=fTanN;
629 if (fModule>fLastSSD1) {tann=fTanP; tanp=fTanN;}
630 Int_t idet=fNdet[fModule];
633 Int_t negativepair[30000];
634 Int_t cnegative[3000];
636 Int_t positivepair[30000];
637 Int_t cpositive[3000];
639 for (Int_t i=0;i<3000;i++) {cnegative[i]=0; cused1[i]=0;}
640 for (Int_t i=0;i<3000;i++) {cpositive[i]=0; cused2[i]=0;}
641 for (Int_t i=0;i<30000;i++) {negativepair[i]=0; positivepair[i]=0;}
643 if ((np*nn) > fgPairsSize) {
644 if (fgPairs) delete [] fgPairs;
645 fgPairsSize = 4*np*nn;
646 fgPairs = new Short_t[fgPairsSize];
648 memset(fgPairs,0,sizeof(Short_t)*np*nn);
651 // find available pairs
653 for (Int_t i=0; i<np; i++) {
654 Float_t yp=pos[i].GetY()*fYpitchSSD;
655 if ( (pos[i].GetQ()>0) && (pos[i].GetQ()<3) ) continue;
656 for (Int_t j=0; j<nn; j++) {
657 if ( (neg[j].GetQ()>0) && (neg[j].GetQ()<3) ) continue;
658 Float_t yn=neg[j].GetY()*fYpitchSSD;
659 Float_t zt=(2*fHlSSD*tanp + yp - yn)/(tann+tanp);
660 Float_t yt=yn + tann*zt;
661 zt-=fHlSSD; yt-=fHwSSD;
662 if (TMath::Abs(yt)<fHwSSD+0.01)
663 if (TMath::Abs(zt)<fHlSSD+0.01*(neg[j].GetNd()+pos[i].GetNd())) {
664 negativepair[i*10+cnegative[i]] =j; //index
665 positivepair[j*10+cpositive[j]] =i;
666 cnegative[i]++; //counters
674 // try to recover points out of but close to the module boundaries
676 for (Int_t i=0; i<np; i++) {
677 Float_t yp=pos[i].GetY()*fYpitchSSD;
678 if ( (pos[i].GetQ()>0) && (pos[i].GetQ()<3) ) continue;
679 for (Int_t j=0; j<nn; j++) {
680 if ( (neg[j].GetQ()>0) && (neg[j].GetQ()<3) ) continue;
681 // if both 1Dclusters have an other cross continue
682 if (cpositive[j]&&cnegative[i]) continue;
683 Float_t yn=neg[j].GetY()*fYpitchSSD;
684 Float_t zt=(2*fHlSSD*tanp + yp - yn)/(tann+tanp);
685 Float_t yt=yn + tann*zt;
686 zt-=fHlSSD; yt-=fHwSSD;
687 if (TMath::Abs(yt)<fHwSSD+0.1)
688 if (TMath::Abs(zt)<fHlSSD+0.15) {
689 // tag 1Dcluster (eventually will produce low quality recpoint)
690 if (cnegative[i]==0) pos[i].SetNd(100); // not available pair
691 if (cpositive[j]==0) neg[j].SetNd(100); // not available pair
692 negativepair[i*10+cnegative[i]] =j; //index
693 positivepair[j*10+cpositive[j]] =i;
694 cnegative[i]++; //counters
707 static AliITSRecoParam *repa = NULL;
709 repa = (AliITSRecoParam*) AliITSReconstructor::GetRecoParam();
711 repa = AliITSRecoParam::GetHighFluxParam();
712 AliWarning("Using default AliITSRecoParam class");
716 if(repa->GetUseChargeMatchingInClusterFinderSSD()==kTRUE) {
722 for (Int_t ip=0;ip<np;ip++){
723 Float_t ybest=1000,zbest=1000,qbest=0;
725 // select gold clusters
726 if ( (cnegative[ip]==1) && cpositive[negativepair[10*ip]]==1){
727 Float_t yp=pos[ip].GetY()*fYpitchSSD;
728 Int_t j = negativepair[10*ip];
730 if( (pos[ip].GetQ()==0) && (neg[j].GetQ() ==0) ) {
731 // both bad, hence continue;
732 // mark both as used (to avoid recover at the end)
738 ratio = (pos[ip].GetQ()-neg[j].GetQ())/(pos[ip].GetQ()+neg[j].GetQ());
740 // charge matching (note that if posQ or negQ is 0 -> ratio=1 and the following condition is met
741 if (TMath::Abs(ratio)>0.33) continue; // note: 0.33=3xsigma_ratio calculated in cosmics tests
744 Float_t yn=neg[j].GetY()*fYpitchSSD;
745 Float_t zt=(2*fHlSSD*tanp + yp - yn)/(tann+tanp);
746 Float_t yt=yn + tann*zt;
747 zt-=fHlSSD; yt-=fHwSSD;
749 qbest=0.5*(pos[ip].GetQ()+neg[j].GetQ());
750 if( (pos[ip].GetQ()==0)||(neg[ip].GetQ()==0)) qbest*=2; // in case of bad strips on one side keep all charge from the other one
752 //cout<<yt<<" "<<zt<<" "<<qbest<<endl;
755 Double_t loc[3]={ybest,0.,zbest},trk[3]={0.,0.,0.};
756 mT2L->MasterToLocal(loc,trk);
760 lp[2]=0.0025*0.0025; //SigmaY2
761 lp[3]=0.110*0.110; //SigmaZ2
764 for (Int_t ilab=0;ilab<10;ilab++) milab[ilab]=-2;
765 for (Int_t ilab=0;ilab<3;ilab++){
766 milab[ilab] = pos[ip].GetLabel(ilab);
767 milab[ilab+3] = neg[j].GetLabel(ilab);
771 milab[3]=(((ip<<10) + j)<<10) + idet; // pos|neg|det
772 Int_t info[3] = {pos[ip].GetNd(),neg[j].GetNd(),fNlayer[fModule]};
773 AliITSRecPoint * cl2;
775 if(clusters){ // Note clusters != 0 when method is called for rawdata
778 cl2 = new (cl[ncl]) AliITSRecPoint(milab,lp,info);
780 cl2->SetChargeRatio(ratio);
784 if ((pos[ip].GetNd()+neg[j].GetNd())>6){ //multi cluster
789 if(pos[ip].GetQ()==0) cl2->SetType(3);
790 if(neg[ip].GetQ()==0) cl2->SetType(4);
796 else{ // Note clusters == 0 when method is called for digits
798 cl2 = new AliITSRecPoint(milab,lp,info);
800 cl2->SetChargeRatio(ratio);
804 if ((pos[ip].GetNd()+neg[j].GetNd())>6){ //multi cluster
809 if(pos[ip].GetQ()==0) cl2->SetType(3);
810 if(neg[ip].GetQ()==0) cl2->SetType(4);
815 fDetTypeRec->AddRecPoint(*cl2);
821 for (Int_t ip=0;ip<np;ip++){
822 Float_t ybest=1000,zbest=1000,qbest=0;
825 // select "silber" cluster
826 if ( cnegative[ip]==1 && cpositive[negativepair[10*ip]]==2){
827 Int_t in = negativepair[10*ip];
828 Int_t ip2 = positivepair[10*in];
829 if (ip2==ip) ip2 = positivepair[10*in+1];
830 Float_t pcharge = pos[ip].GetQ()+pos[ip2].GetQ();
832 if ( (TMath::Abs(pcharge-neg[in].GetQ())<10) && (pcharge!=0) ) { //
836 if ( (fgPairs[ip*nn+in]==100)&&(pos[ip].GetQ() ) ) { //
838 Float_t yp=pos[ip].GetY()*fYpitchSSD;
839 Float_t yn=neg[in].GetY()*fYpitchSSD;
840 Float_t zt=(2*fHlSSD*tanp + yp - yn)/(tann+tanp);
841 Float_t yt=yn + tann*zt;
842 zt-=fHlSSD; yt-=fHwSSD;
844 qbest =pos[ip].GetQ();
846 Double_t loc[3]={ybest,0.,zbest},trk[3]={0.,0.,0.};
847 mT2L->MasterToLocal(loc,trk);
851 lp[2]=0.0025*0.0025; //SigmaY2
852 lp[3]=0.110*0.110; //SigmaZ2
855 for (Int_t ilab=0;ilab<10;ilab++) milab[ilab]=-2;
856 for (Int_t ilab=0;ilab<3;ilab++){
857 milab[ilab] = pos[ip].GetLabel(ilab);
858 milab[ilab+3] = neg[in].GetLabel(ilab);
862 ratio = (pos[ip].GetQ()-neg[in].GetQ())/(pos[ip].GetQ()+neg[in].GetQ());
863 milab[3]=(((ip<<10) + in)<<10) + idet; // pos|neg|det
864 Int_t info[3] = {pos[ip].GetNd(),neg[in].GetNd(),fNlayer[fModule]};
866 AliITSRecPoint * cl2;
869 cl2 = new (cl[ncl]) AliITSRecPoint(milab,lp,info);
871 // cl2-> GetGlobalXYZ(xyz); cout<<"rec "<<xyz[0]<<" "<<xyz[1]<<" "<<xyz[2]<<endl;
873 cl2->SetChargeRatio(ratio);
875 fgPairs[ip*nn+in] = 5;
876 if ((pos[ip].GetNd()+neg[in].GetNd())>6){ //multi cluster
878 fgPairs[ip*nn+in] = 6;
882 cl2 = new AliITSRecPoint(milab,lp,info);
883 cl2->SetChargeRatio(ratio);
885 fgPairs[ip*nn+in] = 5;
886 if ((pos[ip].GetNd()+neg[in].GetNd())>6){ //multi cluster
888 fgPairs[ip*nn+in] = 6;
890 //cout<<"AliITSClusterFinderV2SSD "<<fModule<<" silver1"<<endl;
892 fDetTypeRec->AddRecPoint(*cl2);
901 // if (!(cused1[ip2] || cused2[in])){ //
902 if ( (fgPairs[ip2*nn+in]==100) && (pos[ip2].GetQ()) ) {
904 Float_t yp=pos[ip2].GetY()*fYpitchSSD;
905 Float_t yn=neg[in].GetY()*fYpitchSSD;
906 Float_t zt=(2*fHlSSD*tanp + yp - yn)/(tann+tanp);
907 Float_t yt=yn + tann*zt;
908 zt-=fHlSSD; yt-=fHwSSD;
910 qbest =pos[ip2].GetQ();
912 Double_t loc[3]={ybest,0.,zbest},trk[3]={0.,0.,0.};
913 mT2L->MasterToLocal(loc,trk);
917 lp[2]=0.0025*0.0025; //SigmaY2
918 lp[3]=0.110*0.110; //SigmaZ2
921 for (Int_t ilab=0;ilab<10;ilab++) milab[ilab]=-2;
922 for (Int_t ilab=0;ilab<3;ilab++){
923 milab[ilab] = pos[ip2].GetLabel(ilab);
924 milab[ilab+3] = neg[in].GetLabel(ilab);
928 ratio = (pos[ip2].GetQ()-neg[in].GetQ())/(pos[ip2].GetQ()+neg[in].GetQ());
929 milab[3]=(((ip2<<10) + in)<<10) + idet; // pos|neg|det
930 Int_t info[3] = {pos[ip2].GetNd(),neg[in].GetNd(),fNlayer[fModule]};
932 AliITSRecPoint * cl2;
934 cl2 = new (cl[ncl]) AliITSRecPoint(milab,lp,info);
936 // cl2-> GetGlobalXYZ(xyz); cout<<"rec "<<xyz[0]<<" "<<xyz[1]<<" "<<xyz[2]<<endl;
938 cl2->SetChargeRatio(ratio);
940 fgPairs[ip2*nn+in] =5;
941 if ((pos[ip2].GetNd()+neg[in].GetNd())>6){ //multi cluster
943 fgPairs[ip2*nn+in] =6;
947 cl2 = new AliITSRecPoint(milab,lp,info);
948 cl2->SetChargeRatio(ratio);
950 fgPairs[ip2*nn+in] =5;
951 if ((pos[ip2].GetNd()+neg[in].GetNd())>6){ //multi cluster
953 fgPairs[ip2*nn+in] =6;
956 // cout<<"AliITSClusterFinderV2SSD "<<fModule<<" silver2"<<endl;
957 fDetTypeRec->AddRecPoint(*cl2);
966 } // charge matching condition
968 } // 2 Pside cross 1 Nside
969 } // loop over Pside clusters
974 for (Int_t jn=0;jn<nn;jn++){
975 if (cused2[jn]) continue;
976 Float_t ybest=1000,zbest=1000,qbest=0;
977 // select "silber" cluster
978 if ( cpositive[jn]==1 && cnegative[positivepair[10*jn]]==2){
979 Int_t ip = positivepair[10*jn];
980 Int_t jn2 = negativepair[10*ip];
981 if (jn2==jn) jn2 = negativepair[10*ip+1];
982 Float_t pcharge = neg[jn].GetQ()+neg[jn2].GetQ();
985 if ( (TMath::Abs(pcharge-pos[ip].GetQ())<10) && // charge matching
986 (pcharge!=0) ) { // reject combinations of bad strips
990 // if (!(cused1[ip]||cused2[jn])){
991 if ( (fgPairs[ip*nn+jn]==100) && (neg[jn].GetQ()) ) { //
993 Float_t yn=neg[jn].GetY()*fYpitchSSD;
994 Float_t yp=pos[ip].GetY()*fYpitchSSD;
995 Float_t zt=(2*fHlSSD*tanp + yp - yn)/(tann+tanp);
996 Float_t yt=yn + tann*zt;
997 zt-=fHlSSD; yt-=fHwSSD;
999 qbest =neg[jn].GetQ();
1001 Double_t loc[3]={ybest,0.,zbest},trk[3]={0.,0.,0.};
1002 mT2L->MasterToLocal(loc,trk);
1006 lp[2]=0.0025*0.0025; //SigmaY2
1007 lp[3]=0.110*0.110; //SigmaZ2
1010 for (Int_t ilab=0;ilab<10;ilab++) milab[ilab]=-2;
1011 for (Int_t ilab=0;ilab<3;ilab++){
1012 milab[ilab] = pos[ip].GetLabel(ilab);
1013 milab[ilab+3] = neg[jn].GetLabel(ilab);
1016 CheckLabels2(milab);
1017 ratio = (pos[ip].GetQ()-neg[jn].GetQ())/(pos[ip].GetQ()+neg[jn].GetQ());
1018 milab[3]=(((ip<<10) + jn)<<10) + idet; // pos|neg|det
1019 Int_t info[3] = {pos[ip].GetNd(),neg[jn].GetNd(),fNlayer[fModule]};
1021 AliITSRecPoint * cl2;
1023 cl2 = new (cl[ncl]) AliITSRecPoint(milab,lp,info);
1025 // cl2-> GetGlobalXYZ(xyz); cout<<"rec "<<xyz[0]<<" "<<xyz[1]<<" "<<xyz[2]<<endl;
1027 cl2->SetChargeRatio(ratio);
1029 fgPairs[ip*nn+jn] =7;
1030 if ((pos[ip].GetNd()+neg[jn].GetNd())>6){ //multi cluster
1032 fgPairs[ip*nn+jn]=8;
1037 cl2 = new AliITSRecPoint(milab,lp,info);
1038 cl2->SetChargeRatio(ratio);
1040 fgPairs[ip*nn+jn] =7;
1041 if ((pos[ip].GetNd()+neg[jn].GetNd())>6){ //multi cluster
1043 fgPairs[ip*nn+jn]=8;
1045 //cout<<"AliITSClusterFinderV2SSD "<<fModule<<" silverN1"<<endl;
1047 fDetTypeRec->AddRecPoint(*cl2);
1053 // if (!(cused1[ip]||cused2[jn2])){
1054 if ( (fgPairs[ip*nn+jn2]==100)&&(neg[jn2].GetQ() ) ) { //
1056 Float_t yn=neg[jn2].GetY()*fYpitchSSD;
1057 Double_t yp=pos[ip].GetY()*fYpitchSSD;
1058 Double_t zt=(2*fHlSSD*tanp + yp - yn)/(tann+tanp);
1059 Double_t yt=yn + tann*zt;
1060 zt-=fHlSSD; yt-=fHwSSD;
1061 ybest =yt; zbest=zt;
1062 qbest =neg[jn2].GetQ();
1064 Double_t loc[3]={ybest,0.,zbest},trk[3]={0.,0.,0.};
1065 mT2L->MasterToLocal(loc,trk);
1069 lp[2]=0.0025*0.0025; //SigmaY2
1070 lp[3]=0.110*0.110; //SigmaZ2
1073 for (Int_t ilab=0;ilab<10;ilab++) milab[ilab]=-2;
1074 for (Int_t ilab=0;ilab<3;ilab++){
1075 milab[ilab] = pos[ip].GetLabel(ilab);
1076 milab[ilab+3] = neg[jn2].GetLabel(ilab);
1079 CheckLabels2(milab);
1080 ratio = (pos[ip].GetQ()-neg[jn2].GetQ())/(pos[ip].GetQ()+neg[jn2].GetQ());
1081 milab[3]=(((ip<<10) + jn2)<<10) + idet; // pos|neg|det
1082 Int_t info[3] = {pos[ip].GetNd(),neg[jn2].GetNd(),fNlayer[fModule]};
1083 AliITSRecPoint * cl2;
1085 cl2 = new (cl[ncl]) AliITSRecPoint(milab,lp,info);
1087 // cl2-> GetGlobalXYZ(xyz); cout<<"rec "<<xyz[0]<<" "<<xyz[1]<<" "<<xyz[2]<<endl;
1089 cl2->SetChargeRatio(ratio);
1090 fgPairs[ip*nn+jn2]=7;
1092 if ((pos[ip].GetNd()+neg[jn2].GetNd())>6){ //multi cluster
1094 fgPairs[ip*nn+jn2]=8;
1099 cl2 = new AliITSRecPoint(milab,lp,info);
1100 cl2->SetChargeRatio(ratio);
1101 fgPairs[ip*nn+jn2]=7;
1103 if ((pos[ip].GetNd()+neg[jn2].GetNd())>6){ //multi cluster
1105 fgPairs[ip*nn+jn2]=8;
1107 //cout<<"AliITSClusterFinderV2SSD "<<fModule<<" silverN2"<<endl;
1109 fDetTypeRec->AddRecPoint(*cl2);
1118 } // charge matching condition
1120 } // 2 Nside cross 1 Pside
1121 } // loop over Pside clusters
1125 for (Int_t ip=0;ip<np;ip++){
1126 Float_t ybest=1000,zbest=1000,qbest=0;
1130 if ( (cnegative[ip]<5) && cpositive[negativepair[10*ip]]<5){
1131 Float_t minchargediff =4.;
1133 for (Int_t di=0;di<cnegative[ip];di++){
1134 Int_t jc = negativepair[ip*10+di];
1135 Float_t chargedif = pos[ip].GetQ()-neg[jc].GetQ();
1136 if (TMath::Abs(chargedif)<minchargediff){
1138 minchargediff = TMath::Abs(chargedif);
1141 if (j<0) continue; // not proper cluster
1144 for (Int_t di=0;di<cnegative[ip];di++){
1145 Int_t jc = negativepair[ip*10+di];
1146 Float_t chargedif = pos[ip].GetQ()-neg[jc].GetQ();
1147 if (TMath::Abs(chargedif)<minchargediff+3.) count++;
1149 if (count>1) continue; // more than one "proper" cluster for positive
1153 for (Int_t dj=0;dj<cpositive[j];dj++){
1154 Int_t ic = positivepair[j*10+dj];
1155 Float_t chargedif = pos[ic].GetQ()-neg[j].GetQ();
1156 if (TMath::Abs(chargedif)<minchargediff+3.) count++;
1158 if (count>1) continue; // more than one "proper" cluster for negative
1163 for (Int_t dj=0;dj<cnegative[jp];dj++){
1164 Int_t ic = positivepair[jp*10+dj];
1165 Float_t chargedif = pos[ic].GetQ()-neg[jp].GetQ();
1166 if (TMath::Abs(chargedif)<minchargediff+4.) count++;
1168 if (count>1) continue;
1169 if (fgPairs[ip*nn+j]<100) continue;
1172 //almost gold clusters
1173 Float_t yp=pos[ip].GetY()*fYpitchSSD;
1174 Float_t yn=neg[j].GetY()*fYpitchSSD;
1175 Float_t zt=(2*fHlSSD*tanp + yp - yn)/(tann+tanp);
1176 Float_t yt=yn + tann*zt;
1177 zt-=fHlSSD; yt-=fHwSSD;
1179 qbest=0.5*(pos[ip].GetQ()+neg[j].GetQ());
1181 Double_t loc[3]={ybest,0.,zbest},trk[3]={0.,0.,0.};
1182 mT2L->MasterToLocal(loc,trk);
1186 lp[2]=0.0025*0.0025; //SigmaY2
1187 lp[3]=0.110*0.110; //SigmaZ2
1189 for (Int_t ilab=0;ilab<10;ilab++) milab[ilab]=-2;
1190 for (Int_t ilab=0;ilab<3;ilab++){
1191 milab[ilab] = pos[ip].GetLabel(ilab);
1192 milab[ilab+3] = neg[j].GetLabel(ilab);
1195 CheckLabels2(milab);
1196 if ((neg[j].GetQ()==0)&&(pos[ip].GetQ()==0)) continue; // reject crosses of bad strips!!
1197 ratio = (pos[ip].GetQ()-neg[j].GetQ())/(pos[ip].GetQ()+neg[j].GetQ());
1198 milab[3]=(((ip<<10) + j)<<10) + idet; // pos|neg|det
1199 Int_t info[3] = {pos[ip].GetNd(),neg[j].GetNd(),fNlayer[fModule]};
1200 AliITSRecPoint * cl2;
1202 cl2 = new (cl[ncl]) AliITSRecPoint(milab,lp,info);
1204 // cl2-> GetGlobalXYZ(xyz); cout<<"rec "<<xyz[0]<<" "<<xyz[1]<<" "<<xyz[2]<<endl;
1206 cl2->SetChargeRatio(ratio);
1208 fgPairs[ip*nn+j]=10;
1209 if ((pos[ip].GetNd()+neg[j].GetNd())>6){ //multi cluster
1211 fgPairs[ip*nn+j]=11;
1217 cl2 = new AliITSRecPoint(milab,lp,info);
1218 cl2->SetChargeRatio(ratio);
1220 fgPairs[ip*nn+j]=10;
1221 if ((pos[ip].GetNd()+neg[j].GetNd())>6){ //multi cluster
1223 fgPairs[ip*nn+j]=11;
1228 //cout<<"AliITSClusterFinderV2SSD "<<fModule<<" 2x2"<<endl;
1230 fDetTypeRec->AddRecPoint(*cl2);
1235 } // loop over Pside 1Dclusters
1238 } // use charge matching
1241 // recover all the other crosses
1243 for (Int_t i=0; i<np; i++) {
1244 Float_t ybest=1000,zbest=1000,qbest=0;
1245 Float_t yp=pos[i].GetY()*fYpitchSSD;
1246 if ((pos[i].GetQ()>0)&&(pos[i].GetQ()<3)) continue;
1247 for (Int_t j=0; j<nn; j++) {
1248 // for (Int_t di = 0;di<cpositive[i];di++){
1249 // Int_t j = negativepair[10*i+di];
1250 if ((neg[j].GetQ()>0)&&(neg[j].GetQ()<3)) continue;
1252 if ((neg[j].GetQ()==0)&&(pos[i].GetQ()==0)) continue; // reject crosses of bad strips!!
1254 if (cused2[j]||cused1[i]) continue;
1255 if (fgPairs[i*nn+j]>0 &&fgPairs[i*nn+j]<100) continue;
1256 ratio = (pos[i].GetQ()-neg[j].GetQ())/(pos[i].GetQ()+neg[j].GetQ());
1257 Float_t yn=neg[j].GetY()*fYpitchSSD;
1258 Float_t zt=(2*fHlSSD*tanp + yp - yn)/(tann+tanp);
1259 Float_t yt=yn + tann*zt;
1260 zt-=fHlSSD; yt-=fHwSSD;
1261 if (TMath::Abs(yt)<fHwSSD+0.01)
1262 if (TMath::Abs(zt)<fHlSSD+0.01*(neg[j].GetNd()+pos[i].GetNd())) {
1264 qbest=0.5*(pos[i].GetQ()+neg[j].GetQ());
1266 Double_t loc[3]={ybest,0.,zbest},trk[3]={0.,0.,0.};
1267 mT2L->MasterToLocal(loc,trk);
1271 lp[2]=0.0025*0.0025; //SigmaY2
1272 lp[3]=0.110*0.110; //SigmaZ2
1275 for (Int_t ilab=0;ilab<10;ilab++) milab[ilab]=-2;
1276 for (Int_t ilab=0;ilab<3;ilab++){
1277 milab[ilab] = pos[i].GetLabel(ilab);
1278 milab[ilab+3] = neg[j].GetLabel(ilab);
1281 CheckLabels2(milab);
1282 milab[3]=(((i<<10) + j)<<10) + idet; // pos|neg|det
1283 Int_t info[3] = {pos[i].GetNd(),neg[j].GetNd(),fNlayer[fModule]};
1284 AliITSRecPoint * cl2;
1286 cl2 = new (cl[ncl]) AliITSRecPoint(milab,lp,info);
1288 cl2->SetChargeRatio(ratio);
1289 cl2->SetType(100+cpositive[j]+cnegative[i]);
1291 if(pos[i].GetQ()==0) cl2->SetType(200+cpositive[j]+cnegative[i]);
1292 if(neg[j].GetQ()==0) cl2->SetType(300+cpositive[j]+cnegative[i]);
1296 cl2 = new AliITSRecPoint(milab,lp,info);
1297 cl2->SetChargeRatio(ratio);
1298 cl2->SetType(100+cpositive[j]+cnegative[i]);
1300 if(pos[i].GetQ()==0) cl2->SetType(200+cpositive[j]+cnegative[i]);
1301 if(neg[j].GetQ()==0) cl2->SetType(300+cpositive[j]+cnegative[i]);
1303 fDetTypeRec->AddRecPoint(*cl2);