1 //-------------------------------------------------------------------------
2 // Implementation of the ITS clusterer V2 class
4 // Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch
5 //-------------------------------------------------------------------------
6 //uncomment the line below for running with V1 cluster finder classes
11 #include "AliITSclustererV2.h"
12 #include "AliITSclusterV2.h"
13 #include "AliRawReader.h"
14 #include "AliITSRawStreamSPD.h"
15 #include "AliITSRawStreamSDD.h"
16 #include "AliITSRawStreamSSD.h"
20 #include <TClonesArray.h>
21 #include "AliITSgeom.h"
22 #include "AliITSdigitSPD.h"
23 #include "AliITSdigitSDD.h"
24 #include "AliITSdigitSSD.h"
27 ClassImp(AliITSclustererV2)
29 extern AliRun *gAlice;
31 AliITSclustererV2::AliITSclustererV2(const AliITSgeom *geom) {
32 //------------------------------------------------------------
33 // Standard constructor
34 //------------------------------------------------------------
35 AliITSgeom *g=(AliITSgeom*)geom;
40 Int_t mmax=geom->GetIndexMax();
42 Fatal("AliITSclustererV2","Too many ITS subdetectors !");
45 for (m=0; m<mmax; m++) {
46 Int_t lay,lad,det; g->GetModuleId(m,lay,lad,det);
47 Float_t x,y,z; g->GetTrans(lay,lad,det,x,y,z);
48 Double_t rot[9]; g->GetRotMatrix(lay,lad,det,rot);
49 Double_t alpha=TMath::ATan2(rot[1],rot[0])+TMath::Pi();
50 Double_t ca=TMath::Cos(alpha), sa=TMath::Sin(alpha);
51 fYshift[m] = x*ca + y*sa;
52 fZshift[m] = (Double_t)z;
53 fNdet[m] = (lad-1)*g->GetNdetectors(lay) + (det-1);
56 fNModules = g->GetIndexMax();
59 fLastSPD1=g->GetModuleIndex(2,1,1)-1;
60 fNySPD=256; fNzSPD=160;
62 fZ1pitchSPD=0.0425; fZ2pitchSPD=0.0625;
63 fHwSPD=0.64; fHlSPD=3.48;
64 fYSPD[0]=0.5*fYpitchSPD;
65 for (m=1; m<fNySPD; m++) fYSPD[m]=fYSPD[m-1]+fYpitchSPD;
67 for (m=1; m<fNzSPD; m++) {
68 Double_t dz=fZ1pitchSPD;
69 if (m==31 || m==32 || m==63 || m==64 || m==95 || m==96 ||
70 m==127 || m==128) dz=fZ2pitchSPD;
71 fZSPD[m]=fZSPD[m-1]+dz;
73 for (m=0; m<fNzSPD; m++) {
74 Double_t dz=0.5*fZ1pitchSPD;
75 if (m==31 || m==32 || m==63 || m==64 || m==95 || m==96 ||
76 m==127 || m==128) dz=0.5*fZ2pitchSPD;
81 fNySDD=256; fNzSDD=256;
84 fHwSDD=3.5085; fHlSDD=3.7632;
88 fLastSSD1=g->GetModuleIndex(6,1,1)-1;
98 Int_t AliITSclustererV2::Digits2Clusters(TTree *dTree, TTree *cTree) {
99 //------------------------------------------------------------
100 // This function creates ITS clusters
101 //------------------------------------------------------------
105 Error("Digits2Clusters","Can't get the tree with digits !");
109 TClonesArray *digitsSPD=new TClonesArray("AliITSdigitSPD",3000);
110 dTree->SetBranchAddress("ITSDigitsSPD",&digitsSPD);
111 TClonesArray *digitsSDD=new TClonesArray("AliITSdigitSDD",3000);
112 dTree->SetBranchAddress("ITSDigitsSDD",&digitsSDD);
113 TClonesArray *digitsSSD=new TClonesArray("AliITSdigitSSD",3000);
114 dTree->SetBranchAddress("ITSDigitsSSD",&digitsSSD);
116 TClonesArray *clusters=new TClonesArray("AliITSclusterV2",1000);
117 TBranch *branch=cTree->GetBranch("Clusters");
118 if (!branch) cTree->Branch("Clusters",&clusters);
119 else branch->SetAddress(&clusters);
121 Int_t mmax=(Int_t)dTree->GetEntries();
122 if (mmax!=fNModules) {
123 Error("Digits2Clusters","Number of entries != number of modules !");
127 for (fI=0; fI<mmax; fI++) {
130 if (digitsSPD->GetEntriesFast()!=0)
131 FindClustersSPD(digitsSPD,clusters);
133 if(digitsSDD->GetEntriesFast()!=0)
134 FindClustersSDD(digitsSDD,clusters);
135 else if(digitsSSD->GetEntriesFast()!=0)
136 FindClustersSSD(digitsSSD,clusters);
138 ncl+=clusters->GetEntriesFast();
158 Info("Digits2Clusters","Number of found clusters : %d",ncl);
163 void AliITSclustererV2::Digits2Clusters(AliRawReader* rawReader) {
164 //------------------------------------------------------------
165 // This function creates ITS clusters from raw data
166 //------------------------------------------------------------
167 AliRunLoader* runLoader = AliRunLoader::GetRunLoader();
169 Error("Digits2Clusters", "no run loader found");
172 runLoader->LoadKinematics();
173 AliLoader* itsLoader = runLoader->GetLoader("ITSLoader");
175 Error("Digits2Clusters", "no loader for ITS found");
178 if (!itsLoader->TreeR()) itsLoader->MakeTree("R");
179 TTree* cTree = itsLoader->TreeR();
181 TClonesArray *array=new TClonesArray("AliITSclusterV2",1000);
182 cTree->Branch("Clusters",&array);
185 TClonesArray** clusters = new TClonesArray*[fNModules];
186 for (Int_t iModule = 0; iModule < fNModules; iModule++) {
187 clusters[iModule] = NULL;
189 // one TClonesArray per module
192 AliITSRawStreamSPD inputSPD(rawReader);
193 FindClustersSPD(&inputSPD, clusters);
196 AliITSRawStreamSDD inputSDD(rawReader);
197 FindClustersSDD(&inputSDD, clusters);
200 AliITSRawStreamSSD inputSSD(rawReader);
201 FindClustersSSD(&inputSSD, clusters);
203 // write all clusters to the tree
205 for (Int_t iModule = 0; iModule < fNModules; iModule++) {
206 array = clusters[iModule];
208 Error("Digits2Clusters", "data for module %d missing!", iModule);
209 array = new TClonesArray("AliITSclusterV2");
211 cTree->SetBranchAddress("Clusters", &array);
213 nClusters += array->GetEntriesFast();
216 itsLoader->WriteRecPoints("OVERWRITE");
220 Info("Digits2Clusters", "total number of found clusters in ITS: %d\n",
224 //**** Fast clusters *******************************
225 #include "TParticle.h"
228 #include "AliITSmodule.h"
229 #include "AliITSRecPoint.h"
230 #include "AliITSsimulationFastPoints.h"
231 #include "AliITSRecPoint.h"
234 static void CheckLabels(Int_t lab[3]) {
235 //------------------------------------------------------------
236 // Tries to find mother's labels
237 //------------------------------------------------------------
240 TParticle *part=(TParticle*)gAlice->GetMCApp()->Particle(label);
242 while (part->P() < 0.005) {
243 Int_t m=part->GetFirstMother();
245 Info("CheckLabels","Primary momentum: %f",part->P());
248 if (part->GetStatusCode()>0) {
249 Info("CheckLabels","Primary momentum: %f",part->P());
253 part=(TParticle*)gAlice->GetMCApp()->Particle(label);
255 if (lab[1]<0) lab[1]=label;
256 else if (lab[2]<0) lab[2]=label;
257 else ;//cerr<<"CheckLabels : No empty labels !\n";
261 static void CheckLabels(Int_t lab[3]) {
262 //------------------------------------------------------------
263 // Tries to find mother's labels
264 //------------------------------------------------------------
266 if(lab[0]<0 && lab[1]<0 && lab[2]<0) return; // In case of no labels just exit
268 Int_t ntracks = gAlice->GetMCApp()->GetNtrack();
269 for (Int_t i=0;i<3;i++){
270 Int_t label = lab[i];
271 if (label>=0 && label<ntracks) {
272 TParticle *part=(TParticle*)gAlice->GetMCApp()->Particle(label);
273 if (part->P() < 0.005) {
274 Int_t m=part->GetFirstMother();
278 if (part->GetStatusCode()>0) {
288 static void CheckLabels2(Int_t lab[10]) {
289 //------------------------------------------------------------
290 // Tries to find mother's labels
291 //------------------------------------------------------------
293 for (Int_t i=0;i<10;i++) if (lab[i]>=0) nlabels++;
294 if(nlabels == 0) return; // In case of no labels just exit
296 Int_t ntracks = gAlice->GetMCApp()->GetNtrack();
298 for (Int_t i=0;i<10;i++){
299 Int_t label = lab[i];
300 if (label>=0 && label<ntracks) {
301 TParticle *part=(TParticle*)gAlice->GetMCApp()->Particle(label);
302 if (part->P() < 0.02) {
303 Int_t m=part->GetFirstMother();
307 if (part->GetStatusCode()>0) {
313 if (part->P() < 0.12 && nlabels>3) {
319 if ( (label>ntracks||label <0) && nlabels>3) {
326 for (Int_t i=0;i<10;i++){
328 Int_t label = lab[i];
329 if (label>=0 && label<ntracks) {
330 TParticle *part=(TParticle*)gAlice->GetMCApp()->Particle(label);
331 if (part->P() < 0.1) {
340 //compress labels -- if multi-times the same
342 for (Int_t i=0;i<10;i++) lab2[i]=-2;
343 for (Int_t i=0;i<10 ;i++){
344 if (lab[i]<0) continue;
345 for (Int_t j=0;j<10 &&lab2[j]!=lab[i];j++){
352 for (Int_t j=0;j<10;j++) lab[j]=lab2[j];
356 static void AddLabel(Int_t lab[10], Int_t label) {
358 if(label<0) return; // In case of no label just exit
360 Int_t ntracks = gAlice->GetMCApp()->GetNtrack();
361 if (label>ntracks) return;
362 for (Int_t i=0;i<10;i++){
363 // if (label<0) break;
364 if (lab[i]==label) break;
372 void AliITSclustererV2::RecPoints2Clusters
373 (const TClonesArray *points, Int_t idx, TClonesArray *clusters) {
374 //------------------------------------------------------------
375 // Conversion AliITSRecPoint -> AliITSclusterV2 for the ITS
376 // subdetector indexed by idx
377 //------------------------------------------------------------
378 TClonesArray &cl=*clusters;
379 Int_t ncl=points->GetEntriesFast();
380 for (Int_t i=0; i<ncl; i++) {
381 AliITSRecPoint *p = (AliITSRecPoint *)points->UncheckedAt(i);
383 lp[0]=-(-p->GetX()+fYshift[idx]); if (idx<=fLastSPD1) lp[0]*=-1; //SPD1
384 lp[1]= -p->GetZ()+fZshift[idx];
385 lp[2]=p->GetSigmaX2();
386 lp[3]=p->GetSigmaZ2();
387 lp[4]=p->GetQ()*36./23333.; //electrons -> ADC
389 lab[0]=p->GetLabel(0); lab[1]=p->GetLabel(1); lab[2]=p->GetLabel(2);
392 Int_t dummy[3]={0,0,0};
393 new (cl[i]) AliITSclusterV2(lab,lp, dummy);
397 Int_t AliITSclustererV2::Hits2Clusters(TTree *hTree, TTree *cTree) {
398 //------------------------------------------------------------
399 // This function creates ITS clusters
400 //------------------------------------------------------------
402 Error("Hits2Clusters","gAlice==0 !");
406 AliITS *its = (AliITS*)gAlice->GetModule("ITS");
408 Error("Hits2Clusters","Can't find the ITS !");
411 AliITSgeom *geom=its->GetITSgeom();
412 Int_t mmax=geom->GetIndexMax();
414 its->InitModules(-1,mmax);
415 its->FillModules(hTree,0);
417 TClonesArray *clusters=new TClonesArray("AliITSclusterV2",1000);
418 TBranch *branch=cTree->GetBranch("Clusters");
419 if (!branch) cTree->Branch("Clusters",&clusters);
420 else branch->SetAddress(&clusters);
422 static TClonesArray *points=its->RecPoints();
423 AliITSsimulationFastPoints sim;
425 for (Int_t m=0; m<mmax; m++) {
426 AliITSmodule *mod=its->GetModule(m);
427 sim.CreateFastRecPoints(mod,m,gRandom);
429 RecPoints2Clusters(points, m, clusters);
430 its->ResetRecPoints();
432 ncl+=clusters->GetEntriesFast();
437 Info("Hits2Clusters","Number of found fast clusters : %d",ncl);
446 //***********************************
450 void AliITSclustererV2::
451 FindCluster(Int_t k,Int_t maxz,AliBin *bins,Int_t &n,Int_t *idx) {
452 //------------------------------------------------------------
453 // returns an array of indices of digits belonging to the cluster
454 // (needed when the segmentation is not regular)
455 //------------------------------------------------------------
456 if (n<200) idx[n++]=bins[k].GetIndex();
459 if (bins[k-maxz].IsNotUsed()) FindCluster(k-maxz,maxz,bins,n,idx);
460 if (bins[k-1 ].IsNotUsed()) FindCluster(k-1 ,maxz,bins,n,idx);
461 if (bins[k+maxz].IsNotUsed()) FindCluster(k+maxz,maxz,bins,n,idx);
462 if (bins[k+1 ].IsNotUsed()) FindCluster(k+1 ,maxz,bins,n,idx);
464 if (bins[k-maxz-1].IsNotUsed()) FindCluster(k-maxz-1,maxz,bins,n,idx);
465 if (bins[k-maxz+1].IsNotUsed()) FindCluster(k-maxz+1,maxz,bins,n,idx);
466 if (bins[k+maxz-1].IsNotUsed()) FindCluster(k+maxz-1,maxz,bins,n,idx);
467 if (bins[k+maxz+1].IsNotUsed()) FindCluster(k+maxz+1,maxz,bins,n,idx);
471 void AliITSclustererV2::
472 FindClustersSPD(const TClonesArray *digits, TClonesArray *clusters) {
473 //------------------------------------------------------------
474 // Actual SPD cluster finder
475 //------------------------------------------------------------
476 Int_t kNzBins = fNzSPD + 2;
477 const Int_t kMAXBIN=kNzBins*(fNySPD+2);
479 Int_t ndigits=digits->GetEntriesFast();
480 AliBin *bins=new AliBin[kMAXBIN];
484 for (k=0; k<ndigits; k++) {
485 d=(AliITSdigitSPD*)digits->UncheckedAt(k);
486 Int_t i=d->GetCoord2()+1; //y
487 Int_t j=d->GetCoord1()+1;
488 bins[i*kNzBins+j].SetIndex(k);
489 bins[i*kNzBins+j].SetMask(1);
492 Int_t n=0; TClonesArray &cl=*clusters;
493 for (k=0; k<kMAXBIN; k++) {
494 if (!bins[k].IsNotUsed()) continue;
495 Int_t ni=0, idx[200];
496 FindCluster(k,kNzBins,bins,ni,idx);
498 Info("FindClustersSPD","Too big cluster !");
502 for (Int_t ilab=0;ilab<10;ilab++){
506 d=(AliITSdigitSPD*)digits->UncheckedAt(idx[0]);
507 Int_t ymin=d->GetCoord2(),ymax=ymin;
508 Int_t zmin=d->GetCoord1(),zmax=zmin;
510 for (Int_t l=0; l<ni; l++) {
511 d=(AliITSdigitSPD*)digits->UncheckedAt(idx[l]);
513 if (ymin > d->GetCoord2()) ymin=d->GetCoord2();
514 if (ymax < d->GetCoord2()) ymax=d->GetCoord2();
515 if (zmin > d->GetCoord1()) zmin=d->GetCoord1();
516 if (zmax < d->GetCoord1()) zmax=d->GetCoord1();
517 // MI addition - find all labels in cluster
518 for (Int_t dlab=0;dlab<10;dlab++){
519 Int_t digitlab = (d->GetTracks())[dlab];
520 if (digitlab<0) continue;
521 AddLabel(milab,digitlab);
523 if (milab[9]>0) CheckLabels2(milab);
527 //Int_t idy = (fNlayer[fI]==0)? 2:3;
528 //for (Int_t iz=zmin; iz<=zmax;iz+=2)
529 //Int_t idy = (ymax-ymin)/4.; // max 2 clusters
530 Int_t idy = 0; // max 2 clusters
531 if (fNlayer[fI]==0 &&idy<3) idy=3;
532 if (fNlayer[fI]==1 &&idy<4) idy=4;
534 for (Int_t iz=zmin; iz<=zmax;iz+=idz)
535 for (Int_t iy=ymin; iy<=ymax;iy+=idy){
538 Float_t y=0.,z=0.,q=0.;
539 for (Int_t l=0; l<ni; l++) {
540 d=(AliITSdigitSPD*)digits->UncheckedAt(idx[l]);
541 if (zmax-zmin>=idz || ymax-ymin>=idy){
542 if (TMath::Abs( d->GetCoord2()-iy)>0.75*idy) continue;
543 if (TMath::Abs( d->GetCoord1()-iz)>0.75*idz) continue;
546 Float_t qq=d->GetSignal();
547 y+=qq*fYSPD[d->GetCoord2()]; z+=qq*fZSPD[d->GetCoord1()]; q+=qq;
550 if (ndigits==0) continue;
552 y-=fHwSPD; z-=fHlSPD;
555 lp[0]=-(-y+fYshift[fI]); if (fI<=fLastSPD1) lp[0]=-lp[0];
556 lp[1]= -z+fZshift[fI];
557 // Float_t factor=TMath::Max(double(ni-3.),1.5);
558 Float_t factory=TMath::Max(ymax-ymin,1);
559 Float_t factorz=TMath::Max(zmax-zmin,1);
562 //lp[2]= (fYpitchSPD*fYpitchSPD/12.)*factory;
563 //lp[3]= (fZ1pitchSPD*fZ1pitchSPD/12.)*factorz;
564 lp[2]= (fYpitchSPD*fYpitchSPD/12.);
565 lp[3]= (fZ1pitchSPD*fZ1pitchSPD/12.);
567 lp[4]= (zmax-zmin+1)*100 + (ymax-ymin+1);
570 d=(AliITSdigitSPD*)digits->UncheckedAt(idx[0]);
571 Int_t info[3] = {ymax-ymin+1,zmax-zmin+1,fNlayer[fI]};
572 new (cl[n]) AliITSclusterV2(milab,lp,info); n++;
579 void AliITSclustererV2::FindClustersSPD(AliITSRawStream* input,
580 TClonesArray** clusters)
582 //------------------------------------------------------------
583 // Actual SPD cluster finder for raw data
584 //------------------------------------------------------------
586 Int_t nClustersSPD = 0;
587 Int_t kNzBins = fNzSPD + 2;
588 Int_t kNyBins = fNySPD + 2;
589 Int_t kMaxBin = kNzBins * kNyBins;
590 AliBin *binsSPD = new AliBin[kMaxBin];
591 AliBin *binsSPDInit = new AliBin[kMaxBin];
594 // read raw data input stream
596 Bool_t next = input->Next();
597 if (!next || input->IsNewModule()) {
598 Int_t iModule = input->GetPrevModuleID();
600 // when all data from a module was read, search for clusters
602 clusters[iModule] = new TClonesArray("AliITSclusterV2");
605 for (Int_t iBin = 0; iBin < kMaxBin; iBin++) {
606 if (bins[iBin].IsUsed()) continue;
609 FindCluster(iBin, kNzBins, bins, nBins, idxBins);
611 Error("FindClustersSPD", "SPD: Too big cluster !\n");
619 // label[3] = iModule;
620 label[3] = fNdet[iModule];
622 Int_t ymin = (idxBins[0] / kNzBins) - 1;
624 Int_t zmin = (idxBins[0] % kNzBins) - 1;
626 for (Int_t idx = 0; idx < nBins; idx++) {
627 Int_t iy = (idxBins[idx] / kNzBins) - 1;
628 Int_t iz = (idxBins[idx] % kNzBins) - 1;
629 if (ymin > iy) ymin = iy;
630 if (ymax < iy) ymax = iy;
631 if (zmin > iz) zmin = iz;
632 if (zmax < iz) zmax = iz;
635 Int_t idy = 0; // max 2 clusters
636 if ((iModule <= fLastSPD1) &&idy<3) idy=3;
637 if ((iModule > fLastSPD1) &&idy<4) idy=4;
639 for (Int_t iiz=zmin; iiz<=zmax;iiz+=idz)
640 for (Int_t iiy=ymin; iiy<=ymax;iiy+=idy){
643 Float_t y=0.,z=0.,q=0.;
644 for (Int_t idx = 0; idx < nBins; idx++) {
645 Int_t iy = (idxBins[idx] / kNzBins) - 1;
646 Int_t iz = (idxBins[idx] % kNzBins) - 1;
647 if (zmax-zmin>=idz || ymax-ymin>=idy){
648 if (TMath::Abs(iy-iiy)>0.75*idy) continue;
649 if (TMath::Abs(iz-iiz)>0.75*idz) continue;
652 Float_t qBin = bins[idxBins[idx]].GetQ();
653 y += qBin * fYSPD[iy];
654 z += qBin * fZSPD[iz];
657 if (ndigits==0) continue;
663 Float_t hit[5]; // y, z, sigma(y)^2, sigma(z)^2, charge
664 hit[0] = -(-y+fYshift[iModule]);
665 if (iModule <= fLastSPD1) hit[0] = -hit[0];
666 hit[1] = -z+fZshift[iModule];
667 hit[2] = fYpitchSPD*fYpitchSPD/12.;
668 hit[3] = fZ1pitchSPD*fZ1pitchSPD/12.;
670 hit[4] = (zmax-zmin+1)*100 + (ymax-ymin+1);
671 // CheckLabels(label);
672 Int_t info[3]={ymax-ymin+1,zmax-zmin+1,fNlayer[iModule]};
673 new (clusters[iModule]->AddrAt(nClusters))
674 AliITSclusterV2(label, hit,info);
679 nClustersSPD += nClusters;
685 memcpy(binsSPD,binsSPDInit,sizeof(AliBin)*kMaxBin);
688 // fill the current digit into the bins array
689 Int_t index = (input->GetCoord2()+1) * kNzBins + (input->GetCoord1()+1);
690 bins[index].SetIndex(index);
691 bins[index].SetMask(1);
695 delete [] binsSPDInit;
698 Info("FindClustersSPD", "found clusters in ITS SPD: %d", nClustersSPD);
702 Bool_t AliITSclustererV2::IsMaximum(Int_t k,Int_t max,const AliBin *bins) {
703 //------------------------------------------------------------
704 //is this a local maximum ?
705 //------------------------------------------------------------
706 UShort_t q=bins[k].GetQ();
707 if (q==1023) return kFALSE;
708 if (bins[k-max].GetQ() > q) return kFALSE;
709 if (bins[k-1 ].GetQ() > q) return kFALSE;
710 if (bins[k+max].GetQ() > q) return kFALSE;
711 if (bins[k+1 ].GetQ() > q) return kFALSE;
712 if (bins[k-max-1].GetQ() > q) return kFALSE;
713 if (bins[k+max-1].GetQ() > q) return kFALSE;
714 if (bins[k+max+1].GetQ() > q) return kFALSE;
715 if (bins[k-max+1].GetQ() > q) return kFALSE;
719 void AliITSclustererV2::
720 FindPeaks(Int_t k,Int_t max,AliBin *b,Int_t *idx,UInt_t *msk,Int_t& n) {
721 //------------------------------------------------------------
723 //------------------------------------------------------------
725 if (IsMaximum(k,max,b)) {
726 idx[n]=k; msk[n]=(2<<n);
730 if (b[k-max].GetMask()&1) FindPeaks(k-max,max,b,idx,msk,n);
731 if (b[k-1 ].GetMask()&1) FindPeaks(k-1 ,max,b,idx,msk,n);
732 if (b[k+max].GetMask()&1) FindPeaks(k+max,max,b,idx,msk,n);
733 if (b[k+1 ].GetMask()&1) FindPeaks(k+1 ,max,b,idx,msk,n);
736 void AliITSclustererV2::
737 MarkPeak(Int_t k, Int_t max, AliBin *bins, UInt_t m) {
738 //------------------------------------------------------------
740 //------------------------------------------------------------
741 UShort_t q=bins[k].GetQ();
743 bins[k].SetMask(bins[k].GetMask()|m);
745 if (bins[k-max].GetQ() <= q)
746 if ((bins[k-max].GetMask()&m) == 0) MarkPeak(k-max,max,bins,m);
747 if (bins[k-1 ].GetQ() <= q)
748 if ((bins[k-1 ].GetMask()&m) == 0) MarkPeak(k-1 ,max,bins,m);
749 if (bins[k+max].GetQ() <= q)
750 if ((bins[k+max].GetMask()&m) == 0) MarkPeak(k+max,max,bins,m);
751 if (bins[k+1 ].GetQ() <= q)
752 if ((bins[k+1 ].GetMask()&m) == 0) MarkPeak(k+1 ,max,bins,m);
755 void AliITSclustererV2::
756 MakeCluster(Int_t k,Int_t max,AliBin *bins,UInt_t m,AliITSclusterV2 &c) {
757 //------------------------------------------------------------
758 //make cluster using digits of this peak
759 //------------------------------------------------------------
760 Float_t q=(Float_t)bins[k].GetQ();
761 Int_t i=k/max, j=k-i*max;
764 c.SetY(c.GetY()+i*q);
765 c.SetZ(c.GetZ()+j*q);
766 c.SetSigmaY2(c.GetSigmaY2()+i*i*q);
767 c.SetSigmaZ2(c.GetSigmaZ2()+j*j*q);
769 bins[k].SetMask(0xFFFFFFFE);
771 if (bins[k-max].GetMask() == m) MakeCluster(k-max,max,bins,m,c);
772 if (bins[k-1 ].GetMask() == m) MakeCluster(k-1 ,max,bins,m,c);
773 if (bins[k+max].GetMask() == m) MakeCluster(k+max,max,bins,m,c);
774 if (bins[k+1 ].GetMask() == m) MakeCluster(k+1 ,max,bins,m,c);
777 void AliITSclustererV2::
778 FindClustersSDD(AliBin* bins[2], Int_t nMaxBin, Int_t nzBins,
779 const TClonesArray *digits, TClonesArray *clusters) {
780 //------------------------------------------------------------
781 // Actual SDD cluster finder
782 //------------------------------------------------------------
783 Int_t ncl=0; TClonesArray &cl=*clusters;
784 for (Int_t s=0; s<2; s++)
785 for (Int_t i=0; i<nMaxBin; i++) {
786 if (bins[s][i].IsUsed()) continue;
787 Int_t idx[32]; UInt_t msk[32]; Int_t npeaks=0;
788 FindPeaks(i, nzBins, bins[s], idx, msk, npeaks);
790 if (npeaks>30) continue;
791 if (npeaks==0) continue;
794 for (k=0; k<npeaks-1; k++){//mark adjacent peaks
795 if (idx[k] < 0) continue; //this peak is already removed
796 for (l=k+1; l<npeaks; l++) {
797 if (idx[l] < 0) continue; //this peak is already removed
798 Int_t ki=idx[k]/nzBins, kj=idx[k] - ki*nzBins;
799 Int_t li=idx[l]/nzBins, lj=idx[l] - li*nzBins;
800 Int_t di=TMath::Abs(ki - li);
801 Int_t dj=TMath::Abs(kj - lj);
802 if (di>1 || dj>1) continue;
803 if (bins[s][idx[k]].GetQ() > bins[s][idx[l]].GetQ()) {
814 for (k=0; k<npeaks; k++) {
815 MarkPeak(TMath::Abs(idx[k]), nzBins, bins[s], msk[k]);
818 for (k=0; k<npeaks; k++) {
819 if (idx[k] < 0) continue; //removed peak
821 MakeCluster(idx[k], nzBins, bins[s], msk[k], c);
824 for (Int_t ilab=0;ilab<10;ilab++){
827 Int_t maxi=0,mini=0,maxj=0,minj=0;
828 //AliBin *bmax=&bins[s][idx[k]];
829 //Float_t max = TMath::Max(TMath::Abs(bmax->GetQ())/5.,3.);
831 for (Int_t di=-2; di<=2;di++)
832 for (Int_t dj=-3;dj<=3;dj++){
833 Int_t index = idx[k]+di+dj*nzBins;
834 if (index<0) continue;
835 if (index>=nMaxBin) continue;
836 AliBin *b=&bins[s][index];
837 if (TMath::Abs(b->GetQ())>max){
838 if (di>maxi) maxi=di;
839 if (di<mini) mini=di;
840 if (dj>maxj) maxj=dj;
841 if (dj<minj) minj=dj;
844 if (TMath::Abs(di)<2&&TMath::Abs(dj)<2){
845 AliITSdigitSDD* d=(AliITSdigitSDD*)digits->UncheckedAt(b->GetIndex());
846 for (Int_t itrack=0;itrack<10;itrack++){
847 Int_t track = (d->GetTracks())[itrack];
849 AddLabel(milab, track);
858 Float_t s2 = c.GetSigmaY2()/c.GetQ() - c.GetY()*c.GetY();
859 Float_t w=par->GetPadPitchWidth(sec);
862 c.SetSigmaY2(c.GetSigmaY2()*0.108);
863 if (sec<par->GetNInnerSector()) c.SetSigmaY2(c.GetSigmaY2()*2.07);
865 s2 = c.GetSigmaZ2()/c.GetQ() - c.GetZ()*c.GetZ();
870 c.SetSigmaZ2(c.GetSigmaZ2()*0.169);
871 if (sec<par->GetNInnerSector()) c.SetSigmaZ2(c.GetSigmaZ2()*1.77);
875 c.SetSigmaY2(0.0030*0.0030);
876 c.SetSigmaZ2(0.0020*0.0020);
877 c.SetDetectorIndex(fNdet[fI]);
879 Float_t y=c.GetY(),z=c.GetZ(), q=c.GetQ();
882 //Float_t s2 = c.GetSigmaY2()/c.GetQ() - y*y;
884 //s2 = c.GetSigmaZ2()/c.GetQ() - z*z;
887 y=(y-0.5)*fYpitchSDD;
889 y-=fYoffSDD; //delay ?
892 z=(z-0.5)*fZpitchSDD;
899 c.SetNy(maxj-minj+1);
900 c.SetNz(maxi-mini+1);
902 c.SetQ(q/12.7); //to be consistent with the SSD charges
904 if (c.GetQ() < 20.) continue; //noise cluster
907 // AliBin *b=&bins[s][idx[k]];
908 // AliITSdigitSDD* d=(AliITSdigitSDD*)digits->UncheckedAt(b->GetIndex());
911 //lab[0]=(d->GetTracks())[0];
912 //lab[1]=(d->GetTracks())[1];
913 //lab[2]=(d->GetTracks())[2];
916 c.SetLabel(milab[0],0);
917 c.SetLabel(milab[1],1);
918 c.SetLabel(milab[2],2);
919 c.SetLayer(fNlayer[fI]);
922 new (cl[ncl]) AliITSclusterV2(c); ncl++;
927 void AliITSclustererV2::
928 FindClustersSDD(const TClonesArray *digits, TClonesArray *clusters) {
929 //------------------------------------------------------------
930 // Actual SDD cluster finder
931 //------------------------------------------------------------
932 Int_t kNzBins = fNzSDD + 2;
933 const Int_t kMAXBIN=kNzBins*(fNySDD+2);
936 bins[0]=new AliBin[kMAXBIN];
937 bins[1]=new AliBin[kMAXBIN];
940 Int_t i, ndigits=digits->GetEntriesFast();
941 for (i=0; i<ndigits; i++) {
942 d=(AliITSdigitSDD*)digits->UncheckedAt(i);
943 Int_t y=d->GetCoord2()+1; //y
944 Int_t z=d->GetCoord1()+1; //z
945 Int_t q=d->GetSignal();
949 bins[0][y*kNzBins+z].SetQ(q);
950 bins[0][y*kNzBins+z].SetMask(1);
951 bins[0][y*kNzBins+z].SetIndex(i);
954 bins[1][y*kNzBins+z].SetQ(q);
955 bins[1][y*kNzBins+z].SetMask(1);
956 bins[1][y*kNzBins+z].SetIndex(i);
960 FindClustersSDD(bins, kMAXBIN, kNzBins, digits, clusters);
967 void AliITSclustererV2::FindClustersSDD(AliITSRawStream* input,
968 TClonesArray** clusters)
970 //------------------------------------------------------------
971 // Actual SDD cluster finder for raw data
972 //------------------------------------------------------------
973 Int_t nClustersSDD = 0;
974 Int_t kNzBins = fNzSDD + 2;
975 Int_t kMaxBin = kNzBins * (fNySDD+2);
976 AliBin *binsSDDInit = new AliBin[kMaxBin];
977 AliBin *binsSDD1 = new AliBin[kMaxBin];
978 AliBin *binsSDD2 = new AliBin[kMaxBin];
979 AliBin *bins[2] = {NULL, NULL};
981 // read raw data input stream
983 Bool_t next = input->Next();
984 if (!next || input->IsNewModule()) {
985 Int_t iModule = input->GetPrevModuleID();
987 // when all data from a module was read, search for clusters
989 clusters[iModule] = new TClonesArray("AliITSclusterV2");
991 FindClustersSDD(bins, kMaxBin, kNzBins, NULL, clusters[iModule]);
992 Int_t nClusters = clusters[iModule]->GetEntriesFast();
993 nClustersSDD += nClusters;
994 bins[0] = bins[1] = NULL;
1000 memcpy(binsSDD1,binsSDDInit,sizeof(AliBin)*kMaxBin);
1001 memcpy(binsSDD2,binsSDDInit,sizeof(AliBin)*kMaxBin);
1004 // fill the current digit into the bins array
1005 if(input->GetSignal()>=3) {
1006 Int_t iz = input->GetCoord1()+1;
1007 Int_t side = ((iz <= fNzSDD) ? 0 : 1);
1009 Int_t index = (input->GetCoord2()+1) * kNzBins + iz;
1010 bins[side][index].SetQ(input->GetSignal());
1011 bins[side][index].SetMask(1);
1012 bins[side][index].SetIndex(index);
1018 delete[] binsSDDInit;
1020 Info("FindClustersSDD", "found clusters in ITS SDD: %d", nClustersSDD);
1025 void AliITSclustererV2::
1026 FindClustersSSD(Ali1Dcluster* neg, Int_t nn,
1027 Ali1Dcluster* pos, Int_t np,
1028 TClonesArray *clusters) {
1029 //------------------------------------------------------------
1030 // Actual SSD cluster finder
1031 //------------------------------------------------------------
1032 TClonesArray &cl=*clusters;
1034 Float_t tanp=fTanP, tann=fTanN;
1035 if (fI>fLastSSD1) {tann=fTanP; tanp=fTanN;}
1036 Int_t idet=fNdet[fI];
1039 Int_t negativepair[30000];
1040 Int_t cnegative[3000];
1042 Int_t positivepair[30000];
1043 Int_t cpositive[3000];
1045 for (Int_t i=0;i<3000;i++) {cnegative[i]=0; cused1[i]=0;}
1046 for (Int_t i=0;i<3000;i++) {cpositive[i]=0; cused2[i]=0;}
1047 static Short_t pairs[1000][1000];
1048 memset(pairs,0,sizeof(Short_t)*1000000);
1049 // Short_t ** pairs = new Short_t*[1000];
1050 // for (Int_t i=0; i<1000; i++) {
1051 // pairs[i] = new Short_t[1000];
1052 // memset(pairs[i],0,sizeof(Short_t)*1000);
1055 // find available pairs
1057 for (Int_t i=0; i<np; i++) {
1058 Float_t yp=pos[i].GetY()*fYpitchSSD;
1059 if (pos[i].GetQ()<3) continue;
1060 for (Int_t j=0; j<nn; j++) {
1061 if (neg[j].GetQ()<3) continue;
1062 Float_t yn=neg[j].GetY()*fYpitchSSD;
1063 Float_t zt=(2*fHlSSD*tanp + yp - yn)/(tann+tanp);
1064 Float_t yt=yn + tann*zt;
1065 zt-=fHlSSD; yt-=fHwSSD;
1066 if (TMath::Abs(yt)<fHwSSD+0.01)
1067 if (TMath::Abs(zt)<fHlSSD+0.01*(neg[j].GetNd()+pos[i].GetNd())) {
1068 negativepair[i*10+cnegative[i]] =j; //index
1069 positivepair[j*10+cpositive[j]] =i;
1070 cnegative[i]++; //counters
1077 for (Int_t i=0; i<np; i++) {
1078 Float_t yp=pos[i].GetY()*fYpitchSSD;
1079 if (pos[i].GetQ()<3) continue;
1080 for (Int_t j=0; j<nn; j++) {
1081 if (neg[j].GetQ()<3) continue;
1082 if (cpositive[j]&&cnegative[i]) continue;
1083 Float_t yn=neg[j].GetY()*fYpitchSSD;
1084 Float_t zt=(2*fHlSSD*tanp + yp - yn)/(tann+tanp);
1085 Float_t yt=yn + tann*zt;
1086 zt-=fHlSSD; yt-=fHwSSD;
1087 if (TMath::Abs(yt)<fHwSSD+0.1)
1088 if (TMath::Abs(zt)<fHlSSD+0.15) {
1089 if (cnegative[i]==0) pos[i].SetNd(100); // not available pair
1090 if (cpositive[j]==0) neg[j].SetNd(100); // not available pair
1091 negativepair[i*10+cnegative[i]] =j; //index
1092 positivepair[j*10+cpositive[j]] =i;
1093 cnegative[i]++; //counters
1107 for (Int_t ip=0;ip<np;ip++){
1108 Float_t ybest=1000,zbest=1000,qbest=0;
1110 // select gold clusters
1111 if ( (cnegative[ip]==1) && cpositive[negativepair[10*ip]]==1){
1112 Float_t yp=pos[ip].GetY()*fYpitchSSD;
1113 Int_t j = negativepair[10*ip];
1114 ratio = (pos[ip].GetQ()-neg[j].GetQ())/(pos[ip].GetQ()+neg[j].GetQ());
1116 Float_t yn=neg[j].GetY()*fYpitchSSD;
1117 Float_t zt=(2*fHlSSD*tanp + yp - yn)/(tann+tanp);
1118 Float_t yt=yn + tann*zt;
1119 zt-=fHlSSD; yt-=fHwSSD;
1121 qbest=0.5*(pos[ip].GetQ()+neg[j].GetQ());
1122 lp[0]=-(-ybest+fYshift[fI]);
1123 lp[1]= -zbest+fZshift[fI];
1124 lp[2]=0.0025*0.0025; //SigmaY2
1125 lp[3]=0.110*0.110; //SigmaZ2
1128 for (Int_t ilab=0;ilab<10;ilab++) milab[ilab]=-2;
1129 for (Int_t ilab=0;ilab<3;ilab++){
1130 milab[ilab] = pos[ip].GetLabel(ilab);
1131 milab[ilab+3] = neg[j].GetLabel(ilab);
1134 CheckLabels2(milab);
1135 milab[3]=(((ip<<10) + j)<<10) + idet; // pos|neg|det
1136 Int_t info[3] = {pos[ip].GetNd(),neg[j].GetNd(),fNlayer[fI]};
1137 AliITSclusterV2 * cl2 = new (cl[ncl]) AliITSclusterV2(milab,lp,info);
1139 cl2->SetChargeRatio(ratio);
1142 if ((pos[ip].GetNd()+neg[j].GetNd())>6){ //multi cluster
1151 for (Int_t ip=0;ip<np;ip++){
1152 Float_t ybest=1000,zbest=1000,qbest=0;
1155 // select "silber" cluster
1156 if ( cnegative[ip]==1 && cpositive[negativepair[10*ip]]==2){
1157 Int_t in = negativepair[10*ip];
1158 Int_t ip2 = positivepair[10*in];
1159 if (ip2==ip) ip2 = positivepair[10*in+1];
1160 Float_t pcharge = pos[ip].GetQ()+pos[ip2].GetQ();
1161 if (TMath::Abs(pcharge-neg[in].GetQ())<10){
1164 if (pairs[ip][in]==100){ //
1165 Float_t yp=pos[ip].GetY()*fYpitchSSD;
1166 Float_t yn=neg[in].GetY()*fYpitchSSD;
1167 Float_t zt=(2*fHlSSD*tanp + yp - yn)/(tann+tanp);
1168 Float_t yt=yn + tann*zt;
1169 zt-=fHlSSD; yt-=fHwSSD;
1170 ybest =yt; zbest=zt;
1171 qbest =pos[ip].GetQ();
1172 lp[0]=-(-ybest+fYshift[fI]);
1173 lp[1]= -zbest+fZshift[fI];
1174 lp[2]=0.0025*0.0025; //SigmaY2
1175 lp[3]=0.110*0.110; //SigmaZ2
1178 for (Int_t ilab=0;ilab<10;ilab++) milab[ilab]=-2;
1179 for (Int_t ilab=0;ilab<3;ilab++){
1180 milab[ilab] = pos[ip].GetLabel(ilab);
1181 milab[ilab+3] = neg[in].GetLabel(ilab);
1184 CheckLabels2(milab);
1185 ratio = (pos[ip].GetQ()-neg[in].GetQ())/(pos[ip].GetQ()+neg[in].GetQ());
1186 milab[3]=(((ip<<10) + in)<<10) + idet; // pos|neg|det
1187 Int_t info[3] = {pos[ip].GetNd(),neg[in].GetNd(),fNlayer[fI]};
1188 AliITSclusterV2 * cl2 = new (cl[ncl]) AliITSclusterV2(milab,lp,info);
1190 cl2->SetChargeRatio(ratio);
1193 if ((pos[ip].GetNd()+neg[in].GetNd())>6){ //multi cluster
1201 // if (!(cused1[ip2] || cused2[in])){ //
1202 if (pairs[ip2][in]==100){
1203 Float_t yp=pos[ip2].GetY()*fYpitchSSD;
1204 Float_t yn=neg[in].GetY()*fYpitchSSD;
1205 Float_t zt=(2*fHlSSD*tanp + yp - yn)/(tann+tanp);
1206 Float_t yt=yn + tann*zt;
1207 zt-=fHlSSD; yt-=fHwSSD;
1208 ybest =yt; zbest=zt;
1209 qbest =pos[ip2].GetQ();
1210 lp[0]=-(-ybest+fYshift[fI]);
1211 lp[1]= -zbest+fZshift[fI];
1212 lp[2]=0.0025*0.0025; //SigmaY2
1213 lp[3]=0.110*0.110; //SigmaZ2
1216 for (Int_t ilab=0;ilab<10;ilab++) milab[ilab]=-2;
1217 for (Int_t ilab=0;ilab<3;ilab++){
1218 milab[ilab] = pos[ip2].GetLabel(ilab);
1219 milab[ilab+3] = neg[in].GetLabel(ilab);
1222 CheckLabels2(milab);
1223 ratio = (pos[ip2].GetQ()-neg[in].GetQ())/(pos[ip2].GetQ()+neg[in].GetQ());
1224 milab[3]=(((ip2<<10) + in)<<10) + idet; // pos|neg|det
1225 Int_t info[3] = {pos[ip2].GetNd(),neg[in].GetNd(),fNlayer[fI]};
1226 AliITSclusterV2 *cl2 = new (cl[ncl]) AliITSclusterV2(milab,lp,info);
1228 cl2->SetChargeRatio(ratio);
1231 if ((pos[ip2].GetNd()+neg[in].GetNd())>6){ //multi cluster
1244 for (Int_t jn=0;jn<nn;jn++){
1245 if (cused2[jn]) continue;
1246 Float_t ybest=1000,zbest=1000,qbest=0;
1247 // select "silber" cluster
1248 if ( cpositive[jn]==1 && cnegative[positivepair[10*jn]]==2){
1249 Int_t ip = positivepair[10*jn];
1250 Int_t jn2 = negativepair[10*ip];
1251 if (jn2==jn) jn2 = negativepair[10*ip+1];
1252 Float_t pcharge = neg[jn].GetQ()+neg[jn2].GetQ();
1254 if (TMath::Abs(pcharge-pos[ip].GetQ())<10){
1257 // if (!(cused1[ip]||cused2[jn])){
1258 if (pairs[ip][jn]==100){
1259 Float_t yn=neg[jn].GetY()*fYpitchSSD;
1260 Float_t yp=pos[ip].GetY()*fYpitchSSD;
1261 Float_t zt=(2*fHlSSD*tanp + yp - yn)/(tann+tanp);
1262 Float_t yt=yn + tann*zt;
1263 zt-=fHlSSD; yt-=fHwSSD;
1264 ybest =yt; zbest=zt;
1265 qbest =neg[jn].GetQ();
1266 lp[0]=-(-ybest+fYshift[fI]);
1267 lp[1]= -zbest+fZshift[fI];
1268 lp[2]=0.0025*0.0025; //SigmaY2
1269 lp[3]=0.110*0.110; //SigmaZ2
1272 for (Int_t ilab=0;ilab<10;ilab++) milab[ilab]=-2;
1273 for (Int_t ilab=0;ilab<3;ilab++){
1274 milab[ilab] = pos[ip].GetLabel(ilab);
1275 milab[ilab+3] = neg[jn].GetLabel(ilab);
1278 CheckLabels2(milab);
1279 ratio = (pos[ip].GetQ()-neg[jn].GetQ())/(pos[ip].GetQ()+neg[jn].GetQ());
1280 milab[3]=(((ip<<10) + jn)<<10) + idet; // pos|neg|det
1281 Int_t info[3] = {pos[ip].GetNd(),neg[jn].GetNd(),fNlayer[fI]};
1282 AliITSclusterV2 * cl2 = new (cl[ncl]) AliITSclusterV2(milab,lp,info);
1284 cl2->SetChargeRatio(ratio);
1287 if ((pos[ip].GetNd()+neg[jn].GetNd())>6){ //multi cluster
1294 // if (!(cused1[ip]||cused2[jn2])){
1295 if (pairs[ip][jn2]==100){
1296 Float_t yn=neg[jn2].GetY()*fYpitchSSD;
1297 Double_t yp=pos[ip].GetY()*fYpitchSSD;
1298 Double_t zt=(2*fHlSSD*tanp + yp - yn)/(tann+tanp);
1299 Double_t yt=yn + tann*zt;
1300 zt-=fHlSSD; yt-=fHwSSD;
1301 ybest =yt; zbest=zt;
1302 qbest =neg[jn2].GetQ();
1303 lp[0]=-(-ybest+fYshift[fI]);
1304 lp[1]= -zbest+fZshift[fI];
1305 lp[2]=0.0025*0.0025; //SigmaY2
1306 lp[3]=0.110*0.110; //SigmaZ2
1309 for (Int_t ilab=0;ilab<10;ilab++) milab[ilab]=-2;
1310 for (Int_t ilab=0;ilab<3;ilab++){
1311 milab[ilab] = pos[ip].GetLabel(ilab);
1312 milab[ilab+3] = neg[jn2].GetLabel(ilab);
1315 CheckLabels2(milab);
1316 ratio = (pos[ip].GetQ()-neg[jn2].GetQ())/(pos[ip].GetQ()+neg[jn2].GetQ());
1317 milab[3]=(((ip<<10) + jn2)<<10) + idet; // pos|neg|det
1318 Int_t info[3] = {pos[ip].GetNd(),neg[jn2].GetNd(),fNlayer[fI]};
1319 AliITSclusterV2* cl2 = new (cl[ncl]) AliITSclusterV2(milab,lp,info);
1321 cl2->SetChargeRatio(ratio);
1324 if ((pos[ip].GetNd()+neg[jn2].GetNd())>6){ //multi cluster
1336 for (Int_t ip=0;ip<np;ip++){
1337 Float_t ybest=1000,zbest=1000,qbest=0;
1341 if ( (cnegative[ip]<5) && cpositive[negativepair[10*ip]]<5){
1342 Float_t minchargediff =4.;
1344 for (Int_t di=0;di<cnegative[ip];di++){
1345 Int_t jc = negativepair[ip*10+di];
1346 Float_t chargedif = pos[ip].GetQ()-neg[jc].GetQ();
1347 if (TMath::Abs(chargedif)<minchargediff){
1349 minchargediff = TMath::Abs(chargedif);
1352 if (j<0) continue; // not proper cluster
1354 for (Int_t di=0;di<cnegative[ip];di++){
1355 Int_t jc = negativepair[ip*10+di];
1356 Float_t chargedif = pos[ip].GetQ()-neg[jc].GetQ();
1357 if (TMath::Abs(chargedif)<minchargediff+3.) count++;
1359 if (count>1) continue; // more than one "proper" cluster for positive
1362 for (Int_t dj=0;dj<cpositive[j];dj++){
1363 Int_t ic = positivepair[j*10+dj];
1364 Float_t chargedif = pos[ic].GetQ()-neg[j].GetQ();
1365 if (TMath::Abs(chargedif)<minchargediff+3.) count++;
1367 if (count>1) continue; // more than one "proper" cluster for negative
1372 for (Int_t dj=0;dj<cnegative[jp];dj++){
1373 Int_t ic = positivepair[jp*10+dj];
1374 Float_t chargedif = pos[ic].GetQ()-neg[jp].GetQ();
1375 if (TMath::Abs(chargedif)<minchargediff+4.) count++;
1377 if (count>1) continue;
1378 if (pairs[ip][j]<100) continue;
1380 //almost gold clusters
1381 Float_t yp=pos[ip].GetY()*fYpitchSSD;
1382 Float_t yn=neg[j].GetY()*fYpitchSSD;
1383 Float_t zt=(2*fHlSSD*tanp + yp - yn)/(tann+tanp);
1384 Float_t yt=yn + tann*zt;
1385 zt-=fHlSSD; yt-=fHwSSD;
1387 qbest=0.5*(pos[ip].GetQ()+neg[j].GetQ());
1388 lp[0]=-(-ybest+fYshift[fI]);
1389 lp[1]= -zbest+fZshift[fI];
1390 lp[2]=0.0025*0.0025; //SigmaY2
1391 lp[3]=0.110*0.110; //SigmaZ2
1393 for (Int_t ilab=0;ilab<10;ilab++) milab[ilab]=-2;
1394 for (Int_t ilab=0;ilab<3;ilab++){
1395 milab[ilab] = pos[ip].GetLabel(ilab);
1396 milab[ilab+3] = neg[j].GetLabel(ilab);
1399 CheckLabels2(milab);
1400 ratio = (pos[ip].GetQ()-neg[j].GetQ())/(pos[ip].GetQ()+neg[j].GetQ());
1401 milab[3]=(((ip<<10) + j)<<10) + idet; // pos|neg|det
1402 Int_t info[3] = {pos[ip].GetNd(),neg[j].GetNd(),fNlayer[fI]};
1403 AliITSclusterV2 * cl2 = new (cl[ncl]) AliITSclusterV2(milab,lp,info);
1405 cl2->SetChargeRatio(ratio);
1408 if ((pos[ip].GetNd()+neg[j].GetNd())>6){ //multi cluster
1419 for (Int_t i=0; i<np; i++) {
1420 Float_t ybest=1000,zbest=1000,qbest=0;
1421 Float_t yp=pos[i].GetY()*fYpitchSSD;
1422 if (pos[i].GetQ()<3) continue;
1423 for (Int_t j=0; j<nn; j++) {
1424 // for (Int_t di = 0;di<cpositive[i];di++){
1425 // Int_t j = negativepair[10*i+di];
1426 if (neg[j].GetQ()<3) continue;
1427 if (cused2[j]||cused1[i]) continue;
1428 if (pairs[i][j]>0 &&pairs[i][j]<100) continue;
1429 ratio = (pos[i].GetQ()-neg[j].GetQ())/(pos[i].GetQ()+neg[j].GetQ());
1430 Float_t yn=neg[j].GetY()*fYpitchSSD;
1431 Float_t zt=(2*fHlSSD*tanp + yp - yn)/(tann+tanp);
1432 Float_t yt=yn + tann*zt;
1433 zt-=fHlSSD; yt-=fHwSSD;
1434 if (TMath::Abs(yt)<fHwSSD+0.01)
1435 if (TMath::Abs(zt)<fHlSSD+0.01*(neg[j].GetNd()+pos[i].GetNd())) {
1437 qbest=0.5*(pos[i].GetQ()+neg[j].GetQ());
1438 lp[0]=-(-ybest+fYshift[fI]);
1439 lp[1]= -zbest+fZshift[fI];
1440 lp[2]=0.0025*0.0025; //SigmaY2
1441 lp[3]=0.110*0.110; //SigmaZ2
1444 for (Int_t ilab=0;ilab<10;ilab++) milab[ilab]=-2;
1445 for (Int_t ilab=0;ilab<3;ilab++){
1446 milab[ilab] = pos[i].GetLabel(ilab);
1447 milab[ilab+3] = neg[j].GetLabel(ilab);
1450 CheckLabels2(milab);
1451 milab[3]=(((i<<10) + j)<<10) + idet; // pos|neg|det
1452 Int_t info[3] = {pos[i].GetNd(),neg[j].GetNd(),fNlayer[fI]};
1453 AliITSclusterV2 * cl2 = new (cl[ncl]) AliITSclusterV2(milab,lp,info);
1455 cl2->SetChargeRatio(ratio);
1456 cl2->SetType(100+cpositive[j]+cnegative[i]);
1459 if (pairs[i][j]<100){
1460 printf("problem:- %d\n", pairs[i][j]);
1462 if (cnegative[i]<2&&cpositive[j]<2){
1463 printf("problem:- %d\n", pairs[i][j]);
1470 // for (Int_t i=0; i<1000; i++) delete [] pairs[i];
1476 void AliITSclustererV2::
1477 FindClustersSSD(const TClonesArray *alldigits, TClonesArray *clusters) {
1478 //------------------------------------------------------------
1479 // Actual SSD cluster finder
1480 //------------------------------------------------------------
1481 Int_t smaxall=alldigits->GetEntriesFast();
1482 if (smaxall==0) return;
1483 TObjArray *digits = new TObjArray;
1484 for (Int_t i=0;i<smaxall; i++){
1485 AliITSdigitSSD *d=(AliITSdigitSSD*)alldigits->UncheckedAt(i);
1486 if (d->GetSignal()<3) continue;
1489 Int_t smax = digits->GetEntriesFast();
1490 if (smax==0) return;
1492 const Int_t MAX=1000;
1494 Ali1Dcluster pos[MAX], neg[MAX];
1495 Float_t y=0., q=0., qmax=0.;
1496 Int_t lab[4]={-2,-2,-2,-2};
1498 AliITSdigitSSD *d=(AliITSdigitSSD*)digits->UncheckedAt(0);
1499 q += d->GetSignal();
1500 y += d->GetCoord2()*d->GetSignal();
1501 qmax=d->GetSignal();
1502 lab[0]=d->GetTrack(0); lab[1]=d->GetTrack(1); lab[2]=d->GetTrack(2);
1503 Int_t curr=d->GetCoord2();
1504 Int_t flag=d->GetCoord1();
1506 Ali1Dcluster *c=neg;
1509 for (Int_t ilab=0;ilab<10;ilab++){
1512 milab[0]=d->GetTrack(0); milab[1]=d->GetTrack(1); milab[2]=d->GetTrack(2);
1514 for (Int_t s=1; s<smax; s++) {
1515 d=(AliITSdigitSSD*)digits->UncheckedAt(s);
1516 Int_t strip=d->GetCoord2();
1517 if ((strip-curr) > 1 || flag!=d->GetCoord1()) {
1521 CheckLabels2(milab);
1522 c[*n].SetLabels(milab);
1523 //Split suspiciously big cluster
1526 c[*n].SetY(y/q-0.3*nd);
1530 Error("FindClustersSSD","Too many 1D clusters !");
1533 c[*n].SetY(y/q-0.0*nd);
1538 Error("FindClustersSSD","Too many 1D clusters !");
1542 c[*n].SetY(y/q+0.3*nd);
1545 c[*n].SetLabels(milab);
1550 c[*n].SetY(y/q-0.25*nd);
1554 Error("FindClustersSSD","Too many 1D clusters !");
1557 c[*n].SetY(y/q+0.25*nd);
1560 c[*n].SetLabels(milab);
1564 Error("FindClustersSSD","Too many 1D clusters !");
1569 lab[0]=lab[1]=lab[2]=-2;
1571 for (Int_t ilab=0;ilab<10;ilab++){
1575 if (flag!=d->GetCoord1()) { n=&np; c=pos; }
1577 flag=d->GetCoord1();
1578 q += d->GetSignal();
1579 y += d->GetCoord2()*d->GetSignal();
1581 if (d->GetSignal()>qmax) {
1582 qmax=d->GetSignal();
1583 lab[0]=d->GetTrack(0); lab[1]=d->GetTrack(1); lab[2]=d->GetTrack(2);
1585 for (Int_t ilab=0;ilab<10;ilab++) {
1586 if (d->GetTrack(ilab)>=0) AddLabel(milab, (d->GetTrack(ilab)));
1593 c[*n].SetLabels(lab);
1594 //Split suspiciously big cluster
1595 if (nd>4 && nd<25) {
1596 c[*n].SetY(y/q-0.25*nd);
1600 Error("FindClustersSSD","Too many 1D clusters !");
1603 c[*n].SetY(y/q+0.25*nd);
1606 c[*n].SetLabels(lab);
1610 Error("FindClustersSSD","Too many 1D clusters !");
1614 FindClustersSSD(neg, nn, pos, np, clusters);
1617 void AliITSclustererV2::FindClustersSSD(AliITSRawStream* input,
1618 TClonesArray** clusters)
1620 //------------------------------------------------------------
1621 // Actual SSD cluster finder for raw data
1622 //------------------------------------------------------------
1623 Int_t nClustersSSD = 0;
1624 const Int_t MAX = 1000;
1625 Ali1Dcluster clusters1D[2][MAX];
1626 Int_t nClusters[2] = {0, 0};
1627 Int_t lab[3]={-2,-2,-2};
1631 Int_t prevStrip = -1;
1632 Int_t prevFlag = -1;
1633 Int_t prevModule = -1;
1635 // read raw data input stream
1637 Bool_t next = input->Next();
1639 if(input->GetSignal()<3 && next) continue;
1640 // check if a new cluster starts
1641 Int_t strip = input->GetCoord2();
1642 Int_t flag = input->GetCoord1();
1643 if ((!next || (input->GetModuleID() != prevModule)||
1644 (strip-prevStrip > 1) || (flag != prevFlag)) &&
1646 if (nClusters[prevFlag] == MAX) {
1647 Error("FindClustersSSD", "Too many 1D clusters !");
1650 Ali1Dcluster& cluster = clusters1D[prevFlag][nClusters[prevFlag]++];
1653 cluster.SetNd(nDigits);
1654 cluster.SetLabels(lab);
1656 //Split suspiciously big cluster
1657 if (nDigits > 4&&nDigits < 25) {
1658 cluster.SetY(y/q - 0.25*nDigits);
1659 cluster.SetQ(0.5*q);
1660 if (nClusters[prevFlag] == MAX) {
1661 Error("FindClustersSSD", "Too many 1D clusters !");
1664 Ali1Dcluster& cluster2 = clusters1D[prevFlag][nClusters[prevFlag]++];
1665 cluster2.SetY(y/q + 0.25*nDigits);
1666 cluster2.SetQ(0.5*q);
1667 cluster2.SetNd(nDigits);
1668 cluster2.SetLabels(lab);
1674 if (!next || (input->GetModuleID() != prevModule)) {
1675 Int_t iModule = prevModule;
1677 // when all data from a module was read, search for clusters
1678 if (prevFlag >= 0) {
1679 clusters[iModule] = new TClonesArray("AliITSclusterV2");
1681 FindClustersSSD(&clusters1D[0][0], nClusters[0],
1682 &clusters1D[1][0], nClusters[1], clusters[iModule]);
1683 Int_t nClusters = clusters[iModule]->GetEntriesFast();
1684 nClustersSSD += nClusters;
1688 nClusters[0] = nClusters[1] = 0;
1693 // add digit to current cluster
1694 q += input->GetSignal();
1695 y += strip * input->GetSignal();
1699 prevModule = input->GetModuleID();
1703 Info("FindClustersSSD", "found clusters in ITS SSD: %d", nClustersSSD);
1708 #include "AliITSDetType.h"
1710 #include "AliITSsegmentationSPD.h"
1711 #include "AliITSClusterFinderSPD.h"
1713 #include "AliITSresponseSDD.h"
1714 #include "AliITSsegmentationSDD.h"
1715 #include "AliITSClusterFinderSDD.h"
1717 #include "AliITSsegmentationSSD.h"
1718 #include "AliITSClusterFinderSSD.h"
1721 void AliITSclustererV2::
1722 FindClustersSPD(const TClonesArray *digits, TClonesArray *clusters) {
1723 //------------------------------------------------------------
1724 // Actual SPD cluster finding based on AliITSClusterFinderSPD
1725 //------------------------------------------------------------
1726 static AliITS *its=(AliITS*)gAlice->GetModule("ITS");
1727 static TClonesArray *points=its->RecPoints();
1728 static AliITSsegmentationSPD *seg=
1729 (AliITSsegmentationSPD *)its->DetType(0)->GetSegmentationModel();
1730 static AliITSClusterFinderSPD cf(seg, (TClonesArray*)digits, points);
1732 cf.FindRawClusters(fI);
1733 RecPoints2Clusters(points, fI, clusters);
1734 its->ResetRecPoints();
1738 void AliITSclustererV2::
1739 FindClustersSDD(const TClonesArray *digits, TClonesArray *clusters) {
1740 //------------------------------------------------------------
1741 // Actual SDD cluster finding based on AliITSClusterFinderSDD
1742 //------------------------------------------------------------
1743 static AliITS *its=(AliITS*)gAlice->GetModule("ITS");
1744 static TClonesArray *points=its->RecPoints();
1745 static AliITSresponseSDD *resp=
1746 (AliITSresponseSDD *)its->DetType(1)->GetResponseModel();
1747 static AliITSsegmentationSDD *seg=
1748 (AliITSsegmentationSDD *)its->DetType(1)->GetSegmentationModel();
1749 static AliITSClusterFinderSDD
1750 cf(seg,resp,(TClonesArray*)digits,its->ClustersAddress(1));
1752 cf.FindRawClusters(fI);
1753 Int_t nc=points->GetEntriesFast();
1754 while (nc--) { //To be consistent with the SSD cluster charges
1755 AliITSRecPoint *p=(AliITSRecPoint*)points->UncheckedAt(nc);
1756 p->SetQ(p->GetQ()/12.);
1758 RecPoints2Clusters(points, fI, clusters);
1759 its->ResetClusters(1);
1760 its->ResetRecPoints();
1764 void AliITSclustererV2::
1765 FindClustersSSD(const TClonesArray *digits, TClonesArray *clusters) {
1766 //------------------------------------------------------------
1767 // Actual SSD cluster finding based on AliITSClusterFinderSSD
1768 //------------------------------------------------------------
1769 static AliITS *its=(AliITS*)gAlice->GetModule("ITS");
1770 static TClonesArray *points=its->RecPoints();
1771 static AliITSsegmentationSSD *seg=
1772 (AliITSsegmentationSSD *)its->DetType(2)->GetSegmentationModel();
1773 static AliITSClusterFinderSSD cf(seg,(TClonesArray*)digits);
1775 cf.FindRawClusters(fI);
1776 RecPoints2Clusters(points, fI, clusters);
1777 its->ResetRecPoints();