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New version of the ITS tracking, presented by M.Ivanov during the off-line week in...
[u/mrichter/AliRoot.git] / ITS / AliITSclustererV2.cxx
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7f4044f0 1//-------------------------------------------------------------------------
2// Implementation of the ITS clusterer V2 class
3//
4// Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch
5//-------------------------------------------------------------------------
6//uncomment the line below for running with V1 cluster finder classes
7//#define V1
8
9#include "AliRun.h"
10
11#include "AliITSclustererV2.h"
12#include "AliITSclusterV2.h"
7941072e 13#include "AliRawReader.h"
c391f9d9 14#include "AliITSRawStreamSPD.h"
15#include "AliITSRawStreamSDD.h"
16#include "AliITSRawStreamSSD.h"
7f4044f0 17
7f4044f0 18#include <TFile.h>
19#include <TTree.h>
20#include <TClonesArray.h>
21#include "AliITSgeom.h"
e869281d 22#include "AliITSdigitSPD.h"
23#include "AliITSdigitSDD.h"
24#include "AliITSdigitSSD.h"
5d12ce38 25#include "AliMC.h"
7f4044f0 26
27ClassImp(AliITSclustererV2)
28
29extern AliRun *gAlice;
30
31AliITSclustererV2::AliITSclustererV2(const AliITSgeom *geom) {
32 //------------------------------------------------------------
33 // Standard constructor
34 //------------------------------------------------------------
35 AliITSgeom *g=(AliITSgeom*)geom;
36
37 fEvent=0;
38 fI=0;
39
40 Int_t mmax=geom->GetIndexMax();
c630aafd 41 if (mmax>2200) {
caa92d6a 42 Fatal("AliITSclustererV2","Too many ITS subdetectors !");
c630aafd 43 }
7f4044f0 44 Int_t m;
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);
f363d377 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;
7f4044f0 52 fZshift[m] = (Double_t)z;
53 fNdet[m] = (lad-1)*g->GetNdetectors(lay) + (det-1);
e43c066c 54 fNlayer[m] = lay-1;
7f4044f0 55 }
c391f9d9 56 fNModules = g->GetIndexMax();
7f4044f0 57
58 //SPD geometry
59 fLastSPD1=g->GetModuleIndex(2,1,1)-1;
60 fNySPD=256; fNzSPD=160;
61 fYpitchSPD=0.0050;
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;
66 fZSPD[0]=fZ1pitchSPD;
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;
72 }
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;
77 fZSPD[m]-=dz;
78 }
79
80 //SDD geometry
81 fNySDD=256; fNzSDD=256;
82 fYpitchSDD=0.01825;
83 fZpitchSDD=0.02940;
84 fHwSDD=3.5085; fHlSDD=3.7632;
85 fYoffSDD=0.0425;
86
87 //SSD geometry
88 fLastSSD1=g->GetModuleIndex(6,1,1)-1;
89 fYpitchSSD=0.0095;
90 fHwSSD=3.65;
91 fHlSSD=2.00;
92 fTanP=0.0275;
93 fTanN=0.0075;
94}
95
e3d91d99 96
c630aafd 97Int_t AliITSclustererV2::Digits2Clusters(TTree *dTree, TTree *cTree) {
7f4044f0 98 //------------------------------------------------------------
99 // This function creates ITS clusters
100 //------------------------------------------------------------
101 Int_t ncl=0;
7f4044f0 102
7f4044f0 103 if (!dTree) {
c630aafd 104 Error("Digits2Clusters","Can't get the tree with digits !");
105 return 1;
7f4044f0 106 }
107
108 TClonesArray *digitsSPD=new TClonesArray("AliITSdigitSPD",3000);
109 dTree->SetBranchAddress("ITSDigitsSPD",&digitsSPD);
110 TClonesArray *digitsSDD=new TClonesArray("AliITSdigitSDD",3000);
111 dTree->SetBranchAddress("ITSDigitsSDD",&digitsSDD);
112 TClonesArray *digitsSSD=new TClonesArray("AliITSdigitSSD",3000);
113 dTree->SetBranchAddress("ITSDigitsSSD",&digitsSSD);
114
7f4044f0 115 TClonesArray *clusters=new TClonesArray("AliITSclusterV2",1000);
c630aafd 116 TBranch *branch=cTree->GetBranch("Clusters");
117 if (!branch) cTree->Branch("Clusters",&clusters);
118 else branch->SetAddress(&clusters);
119
120 Int_t mmax=(Int_t)dTree->GetEntries();
7f4044f0 121
122 for (fI=0; fI<mmax; fI++) {
123 dTree->GetEvent(fI);
124
125 if (digitsSPD->GetEntriesFast()!=0)
babd135a 126 FindClustersSPD(digitsSPD,clusters);
127 else
128 if(digitsSDD->GetEntriesFast()!=0)
129 FindClustersSDD(digitsSDD,clusters);
130 else if(digitsSSD->GetEntriesFast()!=0)
131 FindClustersSSD(digitsSSD,clusters);
132
7f4044f0 133 ncl+=clusters->GetEntriesFast();
134
c630aafd 135 cTree->Fill();
7f4044f0 136
137 digitsSPD->Clear();
138 digitsSDD->Clear();
139 digitsSSD->Clear();
140 clusters->Clear();
141 }
c630aafd 142
143 //cTree->Write();
7f4044f0 144
145 delete clusters;
146
147 delete digitsSPD;
148 delete digitsSDD;
149 delete digitsSSD;
150
7941072e 151 //delete dTree;
152
c630aafd 153 Info("Digits2Clusters","Number of found clusters : %d",ncl);
7f4044f0 154
c630aafd 155 return 0;
7f4044f0 156}
157
7941072e 158void AliITSclustererV2::Digits2Clusters(AliRawReader* rawReader) {
c391f9d9 159 //------------------------------------------------------------
160 // This function creates ITS clusters from raw data
161 //------------------------------------------------------------
7941072e 162 AliRunLoader* runLoader = AliRunLoader::GetRunLoader();
163 if (!runLoader) {
164 Error("Digits2Clusters", "no run loader found");
165 return;
166 }
babd135a 167 runLoader->LoadKinematics();
7941072e 168 AliLoader* itsLoader = runLoader->GetLoader("ITSLoader");
169 if (!itsLoader) {
170 Error("Digits2Clusters", "no loader for ITS found");
c391f9d9 171 return;
172 }
7941072e 173 if (!itsLoader->TreeR()) itsLoader->MakeTree("R");
174 TTree* cTree = itsLoader->TreeR();
c391f9d9 175
c391f9d9 176 TClonesArray *array=new TClonesArray("AliITSclusterV2",1000);
7941072e 177 cTree->Branch("Clusters",&array);
c391f9d9 178 delete array;
179
f1e0c1c5 180 TClonesArray** clusters = new TClonesArray*[fNModules];
04fa961a 181 for (Int_t iModule = 0; iModule < fNModules; iModule++) {
182 clusters[iModule] = NULL;
183 }
c391f9d9 184 // one TClonesArray per module
185
7941072e 186 rawReader->Reset();
187 AliITSRawStreamSPD inputSPD(rawReader);
c391f9d9 188 FindClustersSPD(&inputSPD, clusters);
7941072e 189
190 rawReader->Reset();
191 AliITSRawStreamSDD inputSDD(rawReader);
c391f9d9 192 FindClustersSDD(&inputSDD, clusters);
7941072e 193
194 rawReader->Reset();
195 AliITSRawStreamSSD inputSSD(rawReader);
c391f9d9 196 FindClustersSSD(&inputSSD, clusters);
197
198 // write all clusters to the tree
199 Int_t nClusters = 0;
200 for (Int_t iModule = 0; iModule < fNModules; iModule++) {
04fa961a 201 array = clusters[iModule];
c391f9d9 202 if (!array) {
203 Error("Digits2Clusters", "data for module %d missing!", iModule);
204 array = new TClonesArray("AliITSclusterV2");
205 }
7941072e 206 cTree->SetBranchAddress("Clusters", &array);
207 cTree->Fill();
c391f9d9 208 nClusters += array->GetEntriesFast();
209 delete array;
210 }
7941072e 211 itsLoader->WriteRecPoints("OVERWRITE");
c391f9d9 212
04fa961a 213 delete[] clusters;
214
c391f9d9 215 Info("Digits2Clusters", "total number of found clusters in ITS: %d\n",
216 nClusters);
217}
218
7f4044f0 219//**** Fast clusters *******************************
220#include "TParticle.h"
221
222#include "AliITS.h"
223#include "AliITSmodule.h"
224#include "AliITSRecPoint.h"
225#include "AliITSsimulationFastPoints.h"
226#include "AliITSRecPoint.h"
227
babd135a 228/*
7f4044f0 229static void CheckLabels(Int_t lab[3]) {
230 //------------------------------------------------------------
231 // Tries to find mother's labels
232 //------------------------------------------------------------
233 Int_t label=lab[0];
234 if (label>=0) {
5d12ce38 235 TParticle *part=(TParticle*)gAlice->GetMCApp()->Particle(label);
7f4044f0 236 label=-3;
237 while (part->P() < 0.005) {
238 Int_t m=part->GetFirstMother();
c630aafd 239 if (m<0) {
240 Info("CheckLabels","Primary momentum: %f",part->P());
241 break;
242 }
1cca57bf 243 if (part->GetStatusCode()>0) {
c630aafd 244 Info("CheckLabels","Primary momentum: %f",part->P());
245 break;
1cca57bf 246 }
7f4044f0 247 label=m;
5d12ce38 248 part=(TParticle*)gAlice->GetMCApp()->Particle(label);
7f4044f0 249 }
250 if (lab[1]<0) lab[1]=label;
251 else if (lab[2]<0) lab[2]=label;
252 else ;//cerr<<"CheckLabels : No empty labels !\n";
253 }
254}
babd135a 255*/
256static void CheckLabels(Int_t lab[3]) {
257 //------------------------------------------------------------
258 // Tries to find mother's labels
259 //------------------------------------------------------------
260
261 Int_t ntracks = gAlice->GetMCApp()->GetNtrack();
262 for (Int_t i=0;i<3;i++){
263 Int_t label = lab[i];
264 if (label>=0 && label<ntracks) {
265 TParticle *part=(TParticle*)gAlice->GetMCApp()->Particle(label);
266 if (part->P() < 0.005) {
267 Int_t m=part->GetFirstMother();
268 if (m<0) {
269 continue;
270 }
271 if (part->GetStatusCode()>0) {
272 continue;
273 }
274 lab[i]=m;
275 }
276 }
277 }
278
279}
280
281static void CheckLabels2(Int_t lab[10]) {
282 //------------------------------------------------------------
283 // Tries to find mother's labels
284 //------------------------------------------------------------
285
286 Int_t ntracks = gAlice->GetMCApp()->GetNtrack();
e43c066c 287 Int_t nlabels =0;
288 for (Int_t i=0;i<10;i++) if (lab[i]>=0) nlabels++;
289
babd135a 290 for (Int_t i=0;i<10;i++){
291 Int_t label = lab[i];
292 if (label>=0 && label<ntracks) {
293 TParticle *part=(TParticle*)gAlice->GetMCApp()->Particle(label);
e43c066c 294 if (part->P() < 0.02) {
295 Int_t m=part->GetFirstMother();
296 if (m<0) {
297 continue;
298 }
299 if (part->GetStatusCode()>0) {
300 continue;
301 }
302 lab[i]=m;
303 }
304 else
305 if (part->P() < 0.12 && nlabels>3) {
306 lab[i]=-2;
307 nlabels--;
308 }
309 }
310 else{
311 if ( (label>ntracks||label <0) && nlabels>3) {
312 lab[i]=-2;
313 nlabels--;
314 }
315 }
316 }
317 if (nlabels>3){
318 for (Int_t i=0;i<10;i++){
319 if (nlabels>3){
320 Int_t label = lab[i];
321 if (label>=0 && label<ntracks) {
322 TParticle *part=(TParticle*)gAlice->GetMCApp()->Particle(label);
323 if (part->P() < 0.1) {
324 lab[i]=-2;
325 nlabels--;
326 }
babd135a 327 }
babd135a 328 }
e43c066c 329 }
babd135a 330 }
e43c066c 331
babd135a 332 //compress labels -- if multi-times the same
333 Int_t lab2[10];
334 for (Int_t i=0;i<10;i++) lab2[i]=-2;
335 for (Int_t i=0;i<10 ;i++){
336 if (lab[i]<0) continue;
337 for (Int_t j=0;j<10 &&lab2[j]!=lab[i];j++){
338 if (lab2[j]<0) {
339 lab2[j]= lab[i];
340 break;
341 }
342 }
343 }
344 for (Int_t j=0;j<10;j++) lab[j]=lab2[j];
345
346}
347
348static void AddLabel(Int_t lab[10], Int_t label) {
e43c066c 349 Int_t ntracks = gAlice->GetMCApp()->GetNtrack();
350 if (label>ntracks) return;
babd135a 351 for (Int_t i=0;i<10;i++){
352 if (label<0) break;
353 if (lab[i]==label) break;
354 if (lab[i]<0) {
355 lab[i]= label;
356 break;
357 }
358 }
359}
7f4044f0 360
1cca57bf 361void AliITSclustererV2::RecPoints2Clusters
362(const TClonesArray *points, Int_t idx, TClonesArray *clusters) {
7f4044f0 363 //------------------------------------------------------------
1cca57bf 364 // Conversion AliITSRecPoint -> AliITSclusterV2 for the ITS
365 // subdetector indexed by idx
7f4044f0 366 //------------------------------------------------------------
367 TClonesArray &cl=*clusters;
368 Int_t ncl=points->GetEntriesFast();
369 for (Int_t i=0; i<ncl; i++) {
370 AliITSRecPoint *p = (AliITSRecPoint *)points->UncheckedAt(i);
371 Float_t lp[5];
f363d377 372 lp[0]=-(-p->GetX()+fYshift[idx]); if (idx<=fLastSPD1) lp[0]*=-1; //SPD1
373 lp[1]= -p->GetZ()+fZshift[idx];
1cca57bf 374 lp[2]=p->GetSigmaX2();
375 lp[3]=p->GetSigmaZ2();
b6087704 376 lp[4]=p->GetQ()*36./23333.; //electrons -> ADC
7f4044f0 377 Int_t lab[4];
378 lab[0]=p->GetLabel(0); lab[1]=p->GetLabel(1); lab[2]=p->GetLabel(2);
1cca57bf 379 lab[3]=fNdet[idx];
7f4044f0 380 CheckLabels(lab);
babd135a 381 Int_t dummy[3]={0,0,0};
382 new (cl[i]) AliITSclusterV2(lab,lp, dummy);
7f4044f0 383 }
384}
385
c630aafd 386Int_t AliITSclustererV2::Hits2Clusters(TTree *hTree, TTree *cTree) {
7f4044f0 387 //------------------------------------------------------------
388 // This function creates ITS clusters
389 //------------------------------------------------------------
7f4044f0 390 if (!gAlice) {
c630aafd 391 Error("Hits2Clusters","gAlice==0 !");
392 return 1;
7f4044f0 393 }
394
395 AliITS *its = (AliITS*)gAlice->GetModule("ITS");
396 if (!its) {
c630aafd 397 Error("Hits2Clusters","Can't find the ITS !");
398 return 2;
7f4044f0 399 }
400 AliITSgeom *geom=its->GetITSgeom();
401 Int_t mmax=geom->GetIndexMax();
402
403 its->InitModules(-1,mmax);
c630aafd 404 its->FillModules(hTree,0);
7f4044f0 405
7f4044f0 406 TClonesArray *clusters=new TClonesArray("AliITSclusterV2",1000);
c630aafd 407 TBranch *branch=cTree->GetBranch("Clusters");
408 if (!branch) cTree->Branch("Clusters",&clusters);
409 else branch->SetAddress(&clusters);
7f4044f0 410
411 static TClonesArray *points=its->RecPoints();
412 AliITSsimulationFastPoints sim;
413 Int_t ncl=0;
414 for (Int_t m=0; m<mmax; m++) {
415 AliITSmodule *mod=its->GetModule(m);
416 sim.CreateFastRecPoints(mod,m,gRandom);
417
1cca57bf 418 RecPoints2Clusters(points, m, clusters);
7f4044f0 419 its->ResetRecPoints();
420
421 ncl+=clusters->GetEntriesFast();
c630aafd 422 cTree->Fill();
7f4044f0 423 clusters->Clear();
424 }
7f4044f0 425
c630aafd 426 Info("Hits2Clusters","Number of found fast clusters : %d",ncl);
427
428 //cTree->Write();
7f4044f0 429
430 delete clusters;
431
c630aafd 432 return 0;
7f4044f0 433}
434
435//***********************************
436
437#ifndef V1
438
439void AliITSclustererV2::
440FindCluster(Int_t k,Int_t maxz,AliBin *bins,Int_t &n,Int_t *idx) {
441 //------------------------------------------------------------
442 // returns an array of indices of digits belonging to the cluster
443 // (needed when the segmentation is not regular)
444 //------------------------------------------------------------
445 if (n<200) idx[n++]=bins[k].GetIndex();
446 bins[k].Use();
447
448 if (bins[k-maxz].IsNotUsed()) FindCluster(k-maxz,maxz,bins,n,idx);
449 if (bins[k-1 ].IsNotUsed()) FindCluster(k-1 ,maxz,bins,n,idx);
450 if (bins[k+maxz].IsNotUsed()) FindCluster(k+maxz,maxz,bins,n,idx);
451 if (bins[k+1 ].IsNotUsed()) FindCluster(k+1 ,maxz,bins,n,idx);
452 /*
453 if (bins[k-maxz-1].IsNotUsed()) FindCluster(k-maxz-1,maxz,bins,n,idx);
454 if (bins[k-maxz+1].IsNotUsed()) FindCluster(k-maxz+1,maxz,bins,n,idx);
455 if (bins[k+maxz-1].IsNotUsed()) FindCluster(k+maxz-1,maxz,bins,n,idx);
456 if (bins[k+maxz+1].IsNotUsed()) FindCluster(k+maxz+1,maxz,bins,n,idx);
457 */
458}
459
460void AliITSclustererV2::
461FindClustersSPD(const TClonesArray *digits, TClonesArray *clusters) {
462 //------------------------------------------------------------
463 // Actual SPD cluster finder
464 //------------------------------------------------------------
c391f9d9 465 Int_t kNzBins = fNzSPD + 2;
466 const Int_t kMAXBIN=kNzBins*(fNySPD+2);
7f4044f0 467
468 Int_t ndigits=digits->GetEntriesFast();
469 AliBin *bins=new AliBin[kMAXBIN];
470
471 Int_t k;
472 AliITSdigitSPD *d=0;
473 for (k=0; k<ndigits; k++) {
474 d=(AliITSdigitSPD*)digits->UncheckedAt(k);
475 Int_t i=d->GetCoord2()+1; //y
476 Int_t j=d->GetCoord1()+1;
c391f9d9 477 bins[i*kNzBins+j].SetIndex(k);
478 bins[i*kNzBins+j].SetMask(1);
7f4044f0 479 }
480
481 Int_t n=0; TClonesArray &cl=*clusters;
482 for (k=0; k<kMAXBIN; k++) {
483 if (!bins[k].IsNotUsed()) continue;
484 Int_t ni=0, idx[200];
c391f9d9 485 FindCluster(k,kNzBins,bins,ni,idx);
c630aafd 486 if (ni==200) {
487 Info("FindClustersSPD","Too big cluster !");
488 continue;
489 }
babd135a 490 Int_t milab[10];
491 for (Int_t ilab=0;ilab<10;ilab++){
492 milab[ilab]=-2;
493 }
494
7f4044f0 495 d=(AliITSdigitSPD*)digits->UncheckedAt(idx[0]);
496 Int_t ymin=d->GetCoord2(),ymax=ymin;
497 Int_t zmin=d->GetCoord1(),zmax=zmin;
e43c066c 498
7f4044f0 499 for (Int_t l=0; l<ni; l++) {
500 d=(AliITSdigitSPD*)digits->UncheckedAt(idx[l]);
501
502 if (ymin > d->GetCoord2()) ymin=d->GetCoord2();
503 if (ymax < d->GetCoord2()) ymax=d->GetCoord2();
504 if (zmin > d->GetCoord1()) zmin=d->GetCoord1();
505 if (zmax < d->GetCoord1()) zmax=d->GetCoord1();
e43c066c 506 // MI addition - find all labels in cluster
507 for (Int_t dlab=0;dlab<10;dlab++){
babd135a 508 Int_t digitlab = (d->GetTracks())[dlab];
509 if (digitlab<0) continue;
e43c066c 510 AddLabel(milab,digitlab);
babd135a 511 }
e43c066c 512 if (milab[9]>0) CheckLabels2(milab);
513 }
babd135a 514 CheckLabels2(milab);
e43c066c 515 //
516 //Int_t idy = (fNlayer[fI]==0)? 2:3;
517 //for (Int_t iz=zmin; iz<=zmax;iz+=2)
518 //Int_t idy = (ymax-ymin)/4.; // max 2 clusters
519 Int_t idy = 0; // max 2 clusters
520 if (fNlayer[fI]==0 &&idy<3) idy=3;
521 if (fNlayer[fI]==1 &&idy<4) idy=4;
522 Int_t idz =3;
523 for (Int_t iz=zmin; iz<=zmax;iz+=idz)
524 for (Int_t iy=ymin; iy<=ymax;iy+=idy){
525 //
526 Int_t ndigits =0;
527 Double_t y=0.,z=0.,q=0.;
528 for (Int_t l=0; l<ni; l++) {
529 d=(AliITSdigitSPD*)digits->UncheckedAt(idx[l]);
530 if (zmax-zmin>=idz || ymax-ymin>=idy){
531 if (TMath::Abs( d->GetCoord2()-iy)>0.75*idy) continue;
532 if (TMath::Abs( d->GetCoord1()-iz)>0.75*idz) continue;
533 }
534 ndigits++;
535 Double_t qq=d->GetSignal();
536 y+=qq*fYSPD[d->GetCoord2()]; z+=qq*fZSPD[d->GetCoord1()]; q+=qq;
537
538 }
539 if (ndigits==0) continue;
540 y/=q; z/=q;
541 y-=fHwSPD; z-=fHlSPD;
542
543 Float_t lp[5];
544 lp[0]=-(-y+fYshift[fI]); if (fI<=fLastSPD1) lp[0]=-lp[0];
545 lp[1]= -z+fZshift[fI];
546 // Float_t factor=TMath::Max(double(ni-3.),1.5);
547 Float_t factory=TMath::Max(ymax-ymin,1);
548 Float_t factorz=TMath::Max(zmax-zmin,1);
549 factory*= factory;
550 factorz*= factorz;
551 //lp[2]= (fYpitchSPD*fYpitchSPD/12.)*factory;
552 //lp[3]= (fZ1pitchSPD*fZ1pitchSPD/12.)*factorz;
553 lp[2]= (fYpitchSPD*fYpitchSPD/12.);
554 lp[3]= (fZ1pitchSPD*fZ1pitchSPD/12.);
555 //lp[4]= q;
556 lp[4]= (zmax-zmin+1)*100 + (ymax-ymin+1);
557
558 milab[3]=fNdet[fI];
559 d=(AliITSdigitSPD*)digits->UncheckedAt(idx[0]);
560 Int_t info[3] = {ymax-ymin+1,zmax-zmin+1,fNlayer[fI]};
561 new (cl[n]) AliITSclusterV2(milab,lp,info); n++;
562 }
7f4044f0 563 }
e43c066c 564
38bcdcc1 565 delete [] bins;
7f4044f0 566}
567
c391f9d9 568void AliITSclustererV2::FindClustersSPD(AliITSRawStream* input,
569 TClonesArray** clusters)
570{
571 //------------------------------------------------------------
572 // Actual SPD cluster finder for raw data
573 //------------------------------------------------------------
574
575 Int_t nClustersSPD = 0;
576 Int_t kNzBins = fNzSPD + 2;
577 Int_t kNyBins = fNySPD + 2;
578 Int_t kMaxBin = kNzBins * kNyBins;
579 AliBin* bins = NULL;
580
581 // read raw data input stream
582 while (kTRUE) {
583 Bool_t next = input->Next();
584 if (!next || input->IsNewModule()) {
585 Int_t iModule = input->GetPrevModuleID();
586
587 // when all data from a module was read, search for clusters
588 if (bins) {
589 clusters[iModule] = new TClonesArray("AliITSclusterV2");
590 Int_t nClusters = 0;
591
592 for (Int_t iBin = 0; iBin < kMaxBin; iBin++) {
593 if (bins[iBin].IsUsed()) continue;
594 Int_t nBins = 0;
595 Int_t idxBins[200];
596 FindCluster(iBin, kNzBins, bins, nBins, idxBins);
597 if (nBins == 200) {
598 Error("FindClustersSPD", "SPD: Too big cluster !\n");
599 continue;
600 }
601
602 Int_t label[4];
603 label[0] = -2;
604 label[1] = -2;
605 label[2] = -2;
606// label[3] = iModule;
607 label[3] = fNdet[iModule];
608
609 Int_t ymin = (idxBins[0] / kNzBins) - 1;
610 Int_t ymax = ymin;
611 Int_t zmin = (idxBins[0] % kNzBins) - 1;
612 Int_t zmax = zmin;
613 Float_t y = 0.;
614 Float_t z = 0.;
615 Float_t q = 0.;
616 for (Int_t idx = 0; idx < nBins; idx++) {
617 Int_t iy = (idxBins[idx] / kNzBins) - 1;
618 Int_t iz = (idxBins[idx] % kNzBins) - 1;
619 if (ymin > iy) ymin = iy;
620 if (ymax < iy) ymax = iy;
621 if (zmin > iz) zmin = iz;
622 if (zmax < iz) zmax = iz;
623
624 Float_t qBin = bins[idxBins[idx]].GetQ();
625 y += qBin * fYSPD[iy];
626 z += qBin * fZSPD[iz];
627 q += qBin;
628 }
629 y /= q;
630 z /= q;
631 y -= fHwSPD;
632 z -= fHlSPD;
633
634 Float_t hit[5]; // y, z, sigma(y)^2, sigma(z)^2, charge
635 hit[0] = -y-fYshift[iModule];
636 if (iModule <= fLastSPD1) hit[0] = -hit[0];
637 hit[1] = z+fZshift[iModule];
638 hit[2] = fYpitchSPD*fYpitchSPD/12.;
639 hit[3] = fZ1pitchSPD*fZ1pitchSPD/12.;
640// hit[4] = q;
641 hit[4] = (zmax-zmin+1)*100 + (ymax-ymin+1);
642
babd135a 643 CheckLabels(label);
644 Int_t info[3]={0,0,0};
c391f9d9 645 new (clusters[iModule]->AddrAt(nClusters))
babd135a 646 AliITSclusterV2(label, hit,info);
c391f9d9 647 nClusters++;
648 }
649
650 nClustersSPD += nClusters;
651 delete bins;
652 }
653
654 if (!next) break;
655 bins = new AliBin[kMaxBin];
656 }
657
658 // fill the current digit into the bins array
659 Int_t index = (input->GetCoord2()+1) * kNzBins + (input->GetCoord1()+1);
660 bins[index].SetIndex(index);
661 bins[index].SetMask(1);
662 bins[index].SetQ(1);
663 }
664
665 Info("FindClustersSPD", "found clusters in ITS SPD: %d", nClustersSPD);
666}
667
668
7f4044f0 669Bool_t AliITSclustererV2::IsMaximum(Int_t k,Int_t max,const AliBin *bins) {
670 //------------------------------------------------------------
671 //is this a local maximum ?
672 //------------------------------------------------------------
673 UShort_t q=bins[k].GetQ();
674 if (q==1023) return kFALSE;
675 if (bins[k-max].GetQ() > q) return kFALSE;
676 if (bins[k-1 ].GetQ() > q) return kFALSE;
677 if (bins[k+max].GetQ() > q) return kFALSE;
678 if (bins[k+1 ].GetQ() > q) return kFALSE;
679 if (bins[k-max-1].GetQ() > q) return kFALSE;
680 if (bins[k+max-1].GetQ() > q) return kFALSE;
681 if (bins[k+max+1].GetQ() > q) return kFALSE;
682 if (bins[k-max+1].GetQ() > q) return kFALSE;
683 return kTRUE;
684}
685
686void AliITSclustererV2::
687FindPeaks(Int_t k,Int_t max,AliBin *b,Int_t *idx,UInt_t *msk,Int_t& n) {
688 //------------------------------------------------------------
689 //find local maxima
690 //------------------------------------------------------------
691 if (n<31)
692 if (IsMaximum(k,max,b)) {
693 idx[n]=k; msk[n]=(2<<n);
694 n++;
695 }
696 b[k].SetMask(0);
697 if (b[k-max].GetMask()&1) FindPeaks(k-max,max,b,idx,msk,n);
698 if (b[k-1 ].GetMask()&1) FindPeaks(k-1 ,max,b,idx,msk,n);
699 if (b[k+max].GetMask()&1) FindPeaks(k+max,max,b,idx,msk,n);
700 if (b[k+1 ].GetMask()&1) FindPeaks(k+1 ,max,b,idx,msk,n);
701}
702
703void AliITSclustererV2::
704MarkPeak(Int_t k, Int_t max, AliBin *bins, UInt_t m) {
705 //------------------------------------------------------------
706 //mark this peak
707 //------------------------------------------------------------
708 UShort_t q=bins[k].GetQ();
709
710 bins[k].SetMask(bins[k].GetMask()|m);
711
712 if (bins[k-max].GetQ() <= q)
713 if ((bins[k-max].GetMask()&m) == 0) MarkPeak(k-max,max,bins,m);
714 if (bins[k-1 ].GetQ() <= q)
715 if ((bins[k-1 ].GetMask()&m) == 0) MarkPeak(k-1 ,max,bins,m);
716 if (bins[k+max].GetQ() <= q)
717 if ((bins[k+max].GetMask()&m) == 0) MarkPeak(k+max,max,bins,m);
718 if (bins[k+1 ].GetQ() <= q)
719 if ((bins[k+1 ].GetMask()&m) == 0) MarkPeak(k+1 ,max,bins,m);
720}
721
722void AliITSclustererV2::
723MakeCluster(Int_t k,Int_t max,AliBin *bins,UInt_t m,AliITSclusterV2 &c) {
724 //------------------------------------------------------------
725 //make cluster using digits of this peak
726 //------------------------------------------------------------
727 Float_t q=(Float_t)bins[k].GetQ();
728 Int_t i=k/max, j=k-i*max;
729
730 c.SetQ(c.GetQ()+q);
731 c.SetY(c.GetY()+i*q);
732 c.SetZ(c.GetZ()+j*q);
733 c.SetSigmaY2(c.GetSigmaY2()+i*i*q);
734 c.SetSigmaZ2(c.GetSigmaZ2()+j*j*q);
735
736 bins[k].SetMask(0xFFFFFFFE);
737
738 if (bins[k-max].GetMask() == m) MakeCluster(k-max,max,bins,m,c);
739 if (bins[k-1 ].GetMask() == m) MakeCluster(k-1 ,max,bins,m,c);
740 if (bins[k+max].GetMask() == m) MakeCluster(k+max,max,bins,m,c);
741 if (bins[k+1 ].GetMask() == m) MakeCluster(k+1 ,max,bins,m,c);
742}
743
744void AliITSclustererV2::
c391f9d9 745FindClustersSDD(AliBin* bins[2], Int_t nMaxBin, Int_t nzBins,
746 const TClonesArray *digits, TClonesArray *clusters) {
7f4044f0 747 //------------------------------------------------------------
748 // Actual SDD cluster finder
749 //------------------------------------------------------------
7f4044f0 750 Int_t ncl=0; TClonesArray &cl=*clusters;
751 for (Int_t s=0; s<2; s++)
c391f9d9 752 for (Int_t i=0; i<nMaxBin; i++) {
7f4044f0 753 if (bins[s][i].IsUsed()) continue;
754 Int_t idx[32]; UInt_t msk[32]; Int_t npeaks=0;
c391f9d9 755 FindPeaks(i, nzBins, bins[s], idx, msk, npeaks);
7f4044f0 756
757 if (npeaks>30) continue;
e43c066c 758 if (npeaks==0) continue;
7f4044f0 759
760 Int_t k,l;
761 for (k=0; k<npeaks-1; k++){//mark adjacent peaks
762 if (idx[k] < 0) continue; //this peak is already removed
763 for (l=k+1; l<npeaks; l++) {
764 if (idx[l] < 0) continue; //this peak is already removed
c391f9d9 765 Int_t ki=idx[k]/nzBins, kj=idx[k] - ki*nzBins;
766 Int_t li=idx[l]/nzBins, lj=idx[l] - li*nzBins;
7f4044f0 767 Int_t di=TMath::Abs(ki - li);
768 Int_t dj=TMath::Abs(kj - lj);
769 if (di>1 || dj>1) continue;
770 if (bins[s][idx[k]].GetQ() > bins[s][idx[l]].GetQ()) {
771 msk[l]=msk[k];
772 idx[l]*=-1;
773 } else {
774 msk[k]=msk[l];
775 idx[k]*=-1;
776 break;
777 }
778 }
779 }
780
781 for (k=0; k<npeaks; k++) {
c391f9d9 782 MarkPeak(TMath::Abs(idx[k]), nzBins, bins[s], msk[k]);
7f4044f0 783 }
784
785 for (k=0; k<npeaks; k++) {
786 if (idx[k] < 0) continue; //removed peak
787 AliITSclusterV2 c;
c391f9d9 788 MakeCluster(idx[k], nzBins, bins[s], msk[k], c);
babd135a 789 //mi change
790 Int_t milab[10];
791 for (Int_t ilab=0;ilab<10;ilab++){
792 milab[ilab]=-2;
793 }
e43c066c 794 Int_t maxi=0,mini=0,maxj=0,minj=0;
795 //AliBin *bmax=&bins[s][idx[k]];
796 //Float_t max = TMath::Max(TMath::Abs(bmax->GetQ())/5.,3.);
797 Float_t max=3;
798 for (Int_t di=-2; di<=2;di++)
799 for (Int_t dj=-3;dj<=3;dj++){
800 Int_t index = idx[k]+di+dj*nzBins;
801 if (index<0) continue;
802 if (index>=nMaxBin) continue;
803 AliBin *b=&bins[s][index];
804 if (TMath::Abs(b->GetQ())>max){
805 if (di>maxi) maxi=di;
806 if (di<mini) mini=di;
807 if (dj>maxj) maxj=dj;
808 if (dj<minj) minj=dj;
809 //
810 if (TMath::Abs(di)<2&&TMath::Abs(dj)<2){
811 AliITSdigitSDD* d=(AliITSdigitSDD*)digits->UncheckedAt(b->GetIndex());
812 for (Int_t itrack=0;itrack<10;itrack++){
813 Int_t track = (d->GetTracks())[itrack];
814 if (track>=0) {
815 AddLabel(milab, track);
816 }
817 }
818 }
819 }
820 }
821
822 /*
823 Float_t s2 = c.GetSigmaY2()/c.GetQ() - c.GetY()*c.GetY();
824 Float_t w=par->GetPadPitchWidth(sec);
825 c.SetSigmaY2(s2);
826 if (s2 != 0.) {
827 c.SetSigmaY2(c.GetSigmaY2()*0.108);
828 if (sec<par->GetNInnerSector()) c.SetSigmaY2(c.GetSigmaY2()*2.07);
829 }
830 s2 = c.GetSigmaZ2()/c.GetQ() - c.GetZ()*c.GetZ();
831 w=par->GetZWidth();
832 c.SetSigmaZ2(s2);
833
834 if (s2 != 0.) {
835 c.SetSigmaZ2(c.GetSigmaZ2()*0.169);
836 if (sec<par->GetNInnerSector()) c.SetSigmaZ2(c.GetSigmaZ2()*1.77);
837 }
7f4044f0 838 */
839
840 c.SetSigmaY2(0.0030*0.0030);
841 c.SetSigmaZ2(0.0020*0.0020);
842 c.SetDetectorIndex(fNdet[fI]);
843
844 Float_t y=c.GetY(),z=c.GetZ(), q=c.GetQ();
845 y/=q; z/=q;
e43c066c 846 //
847 //Float_t s2 = c.GetSigmaY2()/c.GetQ() - y*y;
848 // c.SetSigmaY2(s2);
849 //s2 = c.GetSigmaZ2()/c.GetQ() - z*z;
850 //c.SetSigmaZ2(s2);
851 //
7f4044f0 852 y=(y-0.5)*fYpitchSDD;
853 y-=fHwSDD;
854 y-=fYoffSDD; //delay ?
855 if (s) y=-y;
856
857 z=(z-0.5)*fZpitchSDD;
858 z-=fHlSDD;
859
f363d377 860 y=-(-y+fYshift[fI]);
861 z= -z+fZshift[fI];
7f4044f0 862 c.SetY(y);
863 c.SetZ(z);
e43c066c 864 c.SetNy(maxj-minj+1);
865 c.SetNz(maxi-mini+1);
866 c.SetType(npeaks);
e3d91d99 867 c.SetQ(q/12.7); //to be consistent with the SSD charges
868
869 if (c.GetQ() < 20.) continue; //noise cluster
e43c066c 870
871 if (digits) {
872 // AliBin *b=&bins[s][idx[k]];
873 // AliITSdigitSDD* d=(AliITSdigitSDD*)digits->UncheckedAt(b->GetIndex());
c391f9d9 874 {
e43c066c 875 //Int_t lab[3];
876 //lab[0]=(d->GetTracks())[0];
877 //lab[1]=(d->GetTracks())[1];
878 //lab[2]=(d->GetTracks())[2];
879 //CheckLabels(lab);
babd135a 880 CheckLabels2(milab);
881 c.SetLabel(milab[0],0);
882 c.SetLabel(milab[1],1);
883 c.SetLabel(milab[2],2);
e43c066c 884 c.SetLayer(fNlayer[fI]);
c391f9d9 885 }
886 }
7f4044f0 887 new (cl[ncl]) AliITSclusterV2(c); ncl++;
888 }
889 }
c391f9d9 890}
891
892void AliITSclustererV2::
893FindClustersSDD(const TClonesArray *digits, TClonesArray *clusters) {
894 //------------------------------------------------------------
895 // Actual SDD cluster finder
896 //------------------------------------------------------------
897 Int_t kNzBins = fNzSDD + 2;
898 const Int_t kMAXBIN=kNzBins*(fNySDD+2);
899
900 AliBin *bins[2];
901 bins[0]=new AliBin[kMAXBIN];
902 bins[1]=new AliBin[kMAXBIN];
903
904 AliITSdigitSDD *d=0;
905 Int_t i, ndigits=digits->GetEntriesFast();
906 for (i=0; i<ndigits; i++) {
907 d=(AliITSdigitSDD*)digits->UncheckedAt(i);
908 Int_t y=d->GetCoord2()+1; //y
909 Int_t z=d->GetCoord1()+1; //z
910 Int_t q=d->GetSignal();
e43c066c 911 if (q<3) continue;
e3d91d99 912
c391f9d9 913 if (z <= fNzSDD) {
914 bins[0][y*kNzBins+z].SetQ(q);
915 bins[0][y*kNzBins+z].SetMask(1);
916 bins[0][y*kNzBins+z].SetIndex(i);
917 } else {
918 z-=fNzSDD;
919 bins[1][y*kNzBins+z].SetQ(q);
920 bins[1][y*kNzBins+z].SetMask(1);
921 bins[1][y*kNzBins+z].SetIndex(i);
922 }
923 }
924
925 FindClustersSDD(bins, kMAXBIN, kNzBins, digits, clusters);
7f4044f0 926
927 delete[] bins[0];
928 delete[] bins[1];
929}
930
c391f9d9 931void AliITSclustererV2::FindClustersSDD(AliITSRawStream* input,
932 TClonesArray** clusters)
933{
934 //------------------------------------------------------------
935 // Actual SDD cluster finder for raw data
936 //------------------------------------------------------------
937 Int_t nClustersSDD = 0;
938 Int_t kNzBins = fNzSDD + 2;
939 Int_t kMaxBin = kNzBins * (fNySDD+2);
940 AliBin* bins[2] = {NULL, NULL};
941
942 // read raw data input stream
943 while (kTRUE) {
944 Bool_t next = input->Next();
945 if (!next || input->IsNewModule()) {
946 Int_t iModule = input->GetPrevModuleID();
947
948 // when all data from a module was read, search for clusters
949 if (bins[0]) {
950 clusters[iModule] = new TClonesArray("AliITSclusterV2");
951 fI = iModule;
952 FindClustersSDD(bins, kMaxBin, kNzBins, NULL, clusters[iModule]);
953 Int_t nClusters = clusters[iModule]->GetEntriesFast();
954 nClustersSDD += nClusters;
955 delete[] bins[0];
956 delete[] bins[1];
957 }
958
959 if (!next) break;
960 bins[0] = new AliBin[kMaxBin];
961 bins[1] = new AliBin[kMaxBin];
962 }
963
964 // fill the current digit into the bins array
965 Int_t iz = input->GetCoord1()+1;
966 Int_t side = ((iz <= fNzSDD) ? 0 : 1);
967 iz -= side*fNzSDD;
968 Int_t index = (input->GetCoord2()+1) * kNzBins + iz;
969 bins[side][index].SetQ(input->GetSignal());
970 bins[side][index].SetMask(1);
971 bins[side][index].SetIndex(index);
972 }
973
974 Info("FindClustersSDD", "found clusters in ITS SDD: %d", nClustersSDD);
975}
976
e43c066c 977
978
c391f9d9 979void AliITSclustererV2::
980FindClustersSSD(Ali1Dcluster* neg, Int_t nn,
981 Ali1Dcluster* pos, Int_t np,
982 TClonesArray *clusters) {
983 //------------------------------------------------------------
984 // Actual SSD cluster finder
985 //------------------------------------------------------------
986 TClonesArray &cl=*clusters;
e43c066c 987 //
c391f9d9 988 Float_t tanp=fTanP, tann=fTanN;
989 if (fI>fLastSSD1) {tann=fTanP; tanp=fTanN;}
c391f9d9 990 Int_t idet=fNdet[fI];
991 Int_t ncl=0;
e43c066c 992 //
993 Int_t negativepair[30000];
994 Int_t cnegative[3000];
995 Int_t cused1[3000];
996 Int_t positivepair[30000];
997 Int_t cpositive[3000];
998 Int_t cused2[3000];
999 for (Int_t i=0;i<3000;i++) {cnegative[i]=0; cused1[i]=0;}
1000 for (Int_t i=0;i<3000;i++) {cpositive[i]=0; cused2[i]=0;}
1001 Short_t pairs[1000][1000];
1002 memset(pairs,0,sizeof(Short_t)*1000000);
1003 //
1004 // find available pairs
1005 //
1006 for (Int_t i=0; i<np; i++) {
1007 Float_t yp=pos[i].GetY()*fYpitchSSD;
1008 if (pos[i].GetQ()<3) continue;
1009 for (Int_t j=0; j<nn; j++) {
1010 if (neg[j].GetQ()<3) continue;
1011 Float_t yn=neg[j].GetY()*fYpitchSSD;
1012 Float_t zt=(2*fHlSSD*tanp + yp - yn)/(tann+tanp);
1013 Float_t yt=yn + tann*zt;
1014 zt-=fHlSSD; yt-=fHwSSD;
1015 if (TMath::Abs(yt)<fHwSSD+0.01)
1016 if (TMath::Abs(zt)<fHlSSD+0.01*(neg[j].GetNd()+pos[i].GetNd())) {
1017 negativepair[i*10+cnegative[i]] =j; //index
1018 positivepair[j*10+cpositive[j]] =i;
1019 cnegative[i]++; //counters
1020 cpositive[j]++;
1021 pairs[i][j]=100;
1022 }
1023 }
1024 }
1025 //
1026 for (Int_t i=0; i<np; i++) {
1027 Float_t yp=pos[i].GetY()*fYpitchSSD;
1028 if (pos[i].GetQ()<3) continue;
1029 for (Int_t j=0; j<nn; j++) {
1030 if (neg[j].GetQ()<3) continue;
1031 if (cpositive[j]&&cnegative[i]) continue;
1032 Float_t yn=neg[j].GetY()*fYpitchSSD;
1033 Float_t zt=(2*fHlSSD*tanp + yp - yn)/(tann+tanp);
1034 Float_t yt=yn + tann*zt;
1035 zt-=fHlSSD; yt-=fHwSSD;
1036 if (TMath::Abs(yt)<fHwSSD+0.1)
1037 if (TMath::Abs(zt)<fHlSSD+0.15) {
1038 if (cnegative[i]==0) pos[i].SetNd(100); // not available pair
1039 if (cpositive[j]==0) neg[j].SetNd(100); // not available pair
1040 negativepair[i*10+cnegative[i]] =j; //index
1041 positivepair[j*10+cpositive[j]] =i;
1042 cnegative[i]++; //counters
1043 cpositive[j]++;
1044 pairs[i][j]=100;
1045 }
1046 }
1047 }
1048 //
1049 Float_t lp[5];
1050 Int_t milab[10];
1051 Double_t ratio;
1052
1053 //
1054 // sign gold tracks
1055 //
1056 for (Int_t ip=0;ip<np;ip++){
1057 Float_t ybest=1000,zbest=1000,qbest=0;
1058 //
1059 // select gold clusters
1060 if ( (cnegative[ip]==1) && cpositive[negativepair[10*ip]]==1){
1061 Float_t yp=pos[ip].GetY()*fYpitchSSD;
1062 Int_t j = negativepair[10*ip];
1063 ratio = (pos[ip].GetQ()-neg[j].GetQ())/(pos[ip].GetQ()+neg[j].GetQ());
1064 //
1065 Float_t yn=neg[j].GetY()*fYpitchSSD;
1066 Float_t zt=(2*fHlSSD*tanp + yp - yn)/(tann+tanp);
1067 Float_t yt=yn + tann*zt;
1068 zt-=fHlSSD; yt-=fHwSSD;
1069 ybest=yt; zbest=zt;
1070 qbest=0.5*(pos[ip].GetQ()+neg[j].GetQ());
1071 lp[0]=-(-ybest+fYshift[fI]);
1072 lp[1]= -zbest+fZshift[fI];
1073 lp[2]=0.0025*0.0025; //SigmaY2
1074 lp[3]=0.110*0.110; //SigmaZ2
1075
1076 lp[4]=qbest; //Q
1077 for (Int_t ilab=0;ilab<10;ilab++) milab[ilab]=-2;
1078 for (Int_t ilab=0;ilab<3;ilab++){
1079 milab[ilab] = pos[ip].GetLabel(ilab);
1080 milab[ilab+3] = neg[j].GetLabel(ilab);
1081 }
1082 //
1083 CheckLabels2(milab);
1084 milab[3]=(((ip<<10) + j)<<10) + idet; // pos|neg|det
1085 Int_t info[3] = {pos[ip].GetNd(),neg[j].GetNd(),fNlayer[fI]};
1086 AliITSclusterV2 * cl2 = new (cl[ncl]) AliITSclusterV2(milab,lp,info);
1087 ncl++;
1088 cl2->SetChargeRatio(ratio);
1089 cl2->SetType(1);
1090 pairs[ip][j]=1;
1091 if ((pos[ip].GetNd()+neg[j].GetNd())>6){ //multi cluster
1092 cl2->SetType(2);
1093 pairs[ip][j]=2;
1094 }
1095 cused1[ip]++;
1096 cused2[j]++;
1097 }
1098 }
1099
1100 for (Int_t ip=0;ip<np;ip++){
1101 Float_t ybest=1000,zbest=1000,qbest=0;
1102 //
1103 //
1104 // select "silber" cluster
1105 if ( cnegative[ip]==1 && cpositive[negativepair[10*ip]]==2){
1106 Int_t in = negativepair[10*ip];
1107 Int_t ip2 = positivepair[10*in];
1108 if (ip2==ip) ip2 = positivepair[10*in+1];
1109 Float_t pcharge = pos[ip].GetQ()+pos[ip2].GetQ();
1110 if (TMath::Abs(pcharge-neg[in].GetQ())<10){
1111 //
1112 // add first pair
1113 if (pairs[ip][in]==100){ //
1114 Float_t yp=pos[ip].GetY()*fYpitchSSD;
1115 Float_t yn=neg[in].GetY()*fYpitchSSD;
1116 Float_t zt=(2*fHlSSD*tanp + yp - yn)/(tann+tanp);
1117 Float_t yt=yn + tann*zt;
1118 zt-=fHlSSD; yt-=fHwSSD;
1119 ybest =yt; zbest=zt;
1120 qbest =pos[ip].GetQ();
1121 lp[0]=-(-ybest+fYshift[fI]);
1122 lp[1]= -zbest+fZshift[fI];
1123 lp[2]=0.0025*0.0025; //SigmaY2
1124 lp[3]=0.110*0.110; //SigmaZ2
1125
1126 lp[4]=qbest; //Q
1127 for (Int_t ilab=0;ilab<10;ilab++) milab[ilab]=-2;
1128 for (Int_t ilab=0;ilab<3;ilab++){
1129 milab[ilab] = pos[ip].GetLabel(ilab);
1130 milab[ilab+3] = neg[in].GetLabel(ilab);
1131 }
1132 //
1133 CheckLabels2(milab);
1134 ratio = (pos[ip].GetQ()-neg[in].GetQ())/(pos[ip].GetQ()+neg[in].GetQ());
1135 milab[3]=(((ip<<10) + in)<<10) + idet; // pos|neg|det
1136 Int_t info[3] = {pos[ip].GetNd(),neg[in].GetNd(),fNlayer[fI]};
1137 AliITSclusterV2 * cl2 = new (cl[ncl]) AliITSclusterV2(milab,lp,info);
1138 ncl++;
1139 cl2->SetChargeRatio(ratio);
1140 cl2->SetType(5);
1141 pairs[ip][in] = 5;
1142 if ((pos[ip].GetNd()+neg[in].GetNd())>6){ //multi cluster
1143 cl2->SetType(6);
1144 pairs[ip][in] = 6;
1145 }
1146 }
1147 //
1148 // add second pair
1149
1150 // if (!(cused1[ip2] || cused2[in])){ //
1151 if (pairs[ip2][in]==100){
1152 Float_t yp=pos[ip2].GetY()*fYpitchSSD;
1153 Float_t yn=neg[in].GetY()*fYpitchSSD;
1154 Float_t zt=(2*fHlSSD*tanp + yp - yn)/(tann+tanp);
1155 Float_t yt=yn + tann*zt;
1156 zt-=fHlSSD; yt-=fHwSSD;
1157 ybest =yt; zbest=zt;
1158 qbest =pos[ip2].GetQ();
1159 lp[0]=-(-ybest+fYshift[fI]);
1160 lp[1]= -zbest+fZshift[fI];
1161 lp[2]=0.0025*0.0025; //SigmaY2
1162 lp[3]=0.110*0.110; //SigmaZ2
1163
1164 lp[4]=qbest; //Q
1165 for (Int_t ilab=0;ilab<10;ilab++) milab[ilab]=-2;
1166 for (Int_t ilab=0;ilab<3;ilab++){
1167 milab[ilab] = pos[ip2].GetLabel(ilab);
1168 milab[ilab+3] = neg[in].GetLabel(ilab);
1169 }
1170 //
1171 CheckLabels2(milab);
1172 ratio = (pos[ip2].GetQ()-neg[in].GetQ())/(pos[ip2].GetQ()+neg[in].GetQ());
1173 milab[3]=(((ip2<<10) + in)<<10) + idet; // pos|neg|det
1174 Int_t info[3] = {pos[ip2].GetNd(),neg[in].GetNd(),fNlayer[fI]};
1175 AliITSclusterV2 *cl2 = new (cl[ncl]) AliITSclusterV2(milab,lp,info);
1176 ncl++;
1177 cl2->SetChargeRatio(ratio);
1178 cl2->SetType(5);
1179 pairs[ip2][in] =5;
1180 if ((pos[ip2].GetNd()+neg[in].GetNd())>6){ //multi cluster
1181 cl2->SetType(6);
1182 pairs[ip2][in] =6;
1183 }
1184 }
1185 cused1[ip]++;
1186 cused1[ip2]++;
1187 cused2[in]++;
1188 }
1189 }
1190 }
1191
1192 //
1193 for (Int_t jn=0;jn<nn;jn++){
1194 if (cused2[jn]) continue;
1195 Float_t ybest=1000,zbest=1000,qbest=0;
1196 // select "silber" cluster
1197 if ( cpositive[jn]==1 && cnegative[positivepair[10*jn]]==2){
1198 Int_t ip = positivepair[10*jn];
1199 Int_t jn2 = negativepair[10*ip];
1200 if (jn2==jn) jn2 = negativepair[10*ip+1];
1201 Float_t pcharge = neg[jn].GetQ()+neg[jn2].GetQ();
1202 //
1203 if (TMath::Abs(pcharge-pos[ip].GetQ())<10){
1204 //
1205 // add first pair
1206 // if (!(cused1[ip]||cused2[jn])){
1207 if (pairs[ip][jn]==100){
1208 Float_t yn=neg[jn].GetY()*fYpitchSSD;
1209 Float_t yp=pos[ip].GetY()*fYpitchSSD;
1210 Float_t zt=(2*fHlSSD*tanp + yp - yn)/(tann+tanp);
1211 Float_t yt=yn + tann*zt;
1212 zt-=fHlSSD; yt-=fHwSSD;
1213 ybest =yt; zbest=zt;
1214 qbest =neg[jn].GetQ();
1215 lp[0]=-(-ybest+fYshift[fI]);
1216 lp[1]= -zbest+fZshift[fI];
1217 lp[2]=0.0025*0.0025; //SigmaY2
1218 lp[3]=0.110*0.110; //SigmaZ2
1219
1220 lp[4]=qbest; //Q
1221 for (Int_t ilab=0;ilab<10;ilab++) milab[ilab]=-2;
1222 for (Int_t ilab=0;ilab<3;ilab++){
1223 milab[ilab] = pos[ip].GetLabel(ilab);
1224 milab[ilab+3] = neg[jn].GetLabel(ilab);
1225 }
1226 //
1227 CheckLabels2(milab);
1228 ratio = (pos[ip].GetQ()-neg[jn].GetQ())/(pos[ip].GetQ()+neg[jn].GetQ());
1229 milab[3]=(((ip<<10) + jn)<<10) + idet; // pos|neg|det
1230 Int_t info[3] = {pos[ip].GetNd(),neg[jn].GetNd(),fNlayer[fI]};
1231 AliITSclusterV2 * cl2 = new (cl[ncl]) AliITSclusterV2(milab,lp,info);
1232 ncl++;
1233 cl2->SetChargeRatio(ratio);
1234 cl2->SetType(7);
1235 pairs[ip][jn] =7;
1236 if ((pos[ip].GetNd()+neg[jn].GetNd())>6){ //multi cluster
1237 cl2->SetType(8);
1238 pairs[ip][jn]=8;
1239 }
1240 }
1241 //
1242 // add second pair
1243 // if (!(cused1[ip]||cused2[jn2])){
1244 if (pairs[ip][jn2]==100){
1245 Float_t yn=neg[jn2].GetY()*fYpitchSSD;
1246 Double_t yp=pos[ip].GetY()*fYpitchSSD;
1247 Double_t zt=(2*fHlSSD*tanp + yp - yn)/(tann+tanp);
1248 Double_t yt=yn + tann*zt;
1249 zt-=fHlSSD; yt-=fHwSSD;
1250 ybest =yt; zbest=zt;
1251 qbest =neg[jn2].GetQ();
1252 lp[0]=-(-ybest+fYshift[fI]);
1253 lp[1]= -zbest+fZshift[fI];
1254 lp[2]=0.0025*0.0025; //SigmaY2
1255 lp[3]=0.110*0.110; //SigmaZ2
1256
1257 lp[4]=qbest; //Q
1258 for (Int_t ilab=0;ilab<10;ilab++) milab[ilab]=-2;
1259 for (Int_t ilab=0;ilab<3;ilab++){
1260 milab[ilab] = pos[ip].GetLabel(ilab);
1261 milab[ilab+3] = neg[jn2].GetLabel(ilab);
1262 }
1263 //
1264 CheckLabels2(milab);
1265 ratio = (pos[ip].GetQ()-neg[jn2].GetQ())/(pos[ip].GetQ()+neg[jn2].GetQ());
1266 milab[3]=(((ip<<10) + jn2)<<10) + idet; // pos|neg|det
1267 Int_t info[3] = {pos[ip].GetNd(),neg[jn2].GetNd(),fNlayer[fI]};
1268 AliITSclusterV2* cl2 = new (cl[ncl]) AliITSclusterV2(milab,lp,info);
1269 ncl++;
1270 cl2->SetChargeRatio(ratio);
1271 pairs[ip][jn2]=7;
1272 cl2->SetType(7);
1273 if ((pos[ip].GetNd()+neg[jn2].GetNd())>6){ //multi cluster
1274 cl2->SetType(8);
1275 pairs[ip][jn2]=8;
1276 }
1277 }
1278 cused1[ip]++;
1279 cused2[jn]++;
1280 cused2[jn2]++;
1281 }
1282 }
1283 }
1284
1285 for (Int_t ip=0;ip<np;ip++){
1286 Float_t ybest=1000,zbest=1000,qbest=0;
1287 //
1288 // 2x2 clusters
1289 //
1290 if ( (cnegative[ip]<5) && cpositive[negativepair[10*ip]]<5){
1291 Float_t minchargediff =4.;
1292 Int_t j=-1;
1293 for (Int_t di=0;di<cnegative[ip];di++){
1294 Int_t jc = negativepair[ip*10+di];
1295 Float_t chargedif = pos[ip].GetQ()-neg[jc].GetQ();
1296 if (TMath::Abs(chargedif)<minchargediff){
1297 j =jc;
1298 minchargediff = TMath::Abs(chargedif);
1299 }
1300 }
1301 if (j<0) continue; // not proper cluster
1302 Int_t count =0;
1303 for (Int_t di=0;di<cnegative[ip];di++){
1304 Int_t jc = negativepair[ip*10+di];
1305 Float_t chargedif = pos[ip].GetQ()-neg[jc].GetQ();
1306 if (TMath::Abs(chargedif)<minchargediff+3.) count++;
1307 }
1308 if (count>1) continue; // more than one "proper" cluster for positive
1309 //
1310 count =0;
1311 for (Int_t dj=0;dj<cpositive[j];dj++){
1312 Int_t ic = positivepair[j*10+dj];
1313 Float_t chargedif = pos[ic].GetQ()-neg[j].GetQ();
1314 if (TMath::Abs(chargedif)<minchargediff+3.) count++;
1315 }
1316 if (count>1) continue; // more than one "proper" cluster for negative
1317
1318 Int_t jp = 0;
1319
1320 count =0;
1321 for (Int_t dj=0;dj<cnegative[jp];dj++){
1322 Int_t ic = positivepair[jp*10+dj];
1323 Float_t chargedif = pos[ic].GetQ()-neg[jp].GetQ();
1324 if (TMath::Abs(chargedif)<minchargediff+4.) count++;
1325 }
1326 if (count>1) continue;
1327 if (pairs[ip][j]<100) continue;
1328 //
1329 //almost gold clusters
1330 Float_t yp=pos[ip].GetY()*fYpitchSSD;
1331 Float_t yn=neg[j].GetY()*fYpitchSSD;
1332 Float_t zt=(2*fHlSSD*tanp + yp - yn)/(tann+tanp);
1333 Float_t yt=yn + tann*zt;
1334 zt-=fHlSSD; yt-=fHwSSD;
1335 ybest=yt; zbest=zt;
1336 qbest=0.5*(pos[ip].GetQ()+neg[j].GetQ());
1337 lp[0]=-(-ybest+fYshift[fI]);
1338 lp[1]= -zbest+fZshift[fI];
1339 lp[2]=0.0025*0.0025; //SigmaY2
1340 lp[3]=0.110*0.110; //SigmaZ2
1341 lp[4]=qbest; //Q
1342 for (Int_t ilab=0;ilab<10;ilab++) milab[ilab]=-2;
1343 for (Int_t ilab=0;ilab<3;ilab++){
1344 milab[ilab] = pos[ip].GetLabel(ilab);
1345 milab[ilab+3] = neg[j].GetLabel(ilab);
1346 }
1347 //
1348 CheckLabels2(milab);
1349 ratio = (pos[ip].GetQ()-neg[j].GetQ())/(pos[ip].GetQ()+neg[j].GetQ());
1350 milab[3]=(((ip<<10) + j)<<10) + idet; // pos|neg|det
1351 Int_t info[3] = {pos[ip].GetNd(),neg[j].GetNd(),fNlayer[fI]};
1352 AliITSclusterV2 * cl2 = new (cl[ncl]) AliITSclusterV2(milab,lp,info);
1353 ncl++;
1354 cl2->SetChargeRatio(ratio);
1355 cl2->SetType(10);
1356 pairs[ip][j]=10;
1357 if ((pos[ip].GetNd()+neg[j].GetNd())>6){ //multi cluster
1358 cl2->SetType(11);
1359 pairs[ip][j]=11;
1360 }
1361 cused1[ip]++;
1362 cused2[j]++;
1363 }
1364
1365 }
1366
1367 //
c391f9d9 1368 for (Int_t i=0; i<np; i++) {
c391f9d9 1369 Float_t ybest=1000,zbest=1000,qbest=0;
1370 Float_t yp=pos[i].GetY()*fYpitchSSD;
e43c066c 1371 if (pos[i].GetQ()<3) continue;
c391f9d9 1372 for (Int_t j=0; j<nn; j++) {
e43c066c 1373 // for (Int_t di = 0;di<cpositive[i];di++){
1374 // Int_t j = negativepair[10*i+di];
1375 if (neg[j].GetQ()<3) continue;
1376 if (cused2[j]||cused1[i]) continue;
1377 if (pairs[i][j]>0 &&pairs[i][j]<100) continue;
1378 ratio = (pos[i].GetQ()-neg[j].GetQ())/(pos[i].GetQ()+neg[j].GetQ());
c391f9d9 1379 Float_t yn=neg[j].GetY()*fYpitchSSD;
1380 Float_t zt=(2*fHlSSD*tanp + yp - yn)/(tann+tanp);
1381 Float_t yt=yn + tann*zt;
1382 zt-=fHlSSD; yt-=fHwSSD;
1383 if (TMath::Abs(yt)<fHwSSD+0.01)
e43c066c 1384 if (TMath::Abs(zt)<fHlSSD+0.01*(neg[j].GetNd()+pos[i].GetNd())) {
c391f9d9 1385 ybest=yt; zbest=zt;
1386 qbest=0.5*(pos[i].GetQ()+neg[j].GetQ());
f363d377 1387 lp[0]=-(-ybest+fYshift[fI]);
1388 lp[1]= -zbest+fZshift[fI];
e43c066c 1389 lp[2]=0.0025*0.0025; //SigmaY2
1390 lp[3]=0.110*0.110; //SigmaZ2
1391
c391f9d9 1392 lp[4]=qbest; //Q
babd135a 1393 for (Int_t ilab=0;ilab<10;ilab++) milab[ilab]=-2;
e43c066c 1394 for (Int_t ilab=0;ilab<3;ilab++){
1395 milab[ilab] = pos[i].GetLabel(ilab);
1396 milab[ilab+3] = neg[j].GetLabel(ilab);
1397 }
babd135a 1398 //
babd135a 1399 CheckLabels2(milab);
1400 milab[3]=(((i<<10) + j)<<10) + idet; // pos|neg|det
e43c066c 1401 Int_t info[3] = {pos[i].GetNd(),neg[j].GetNd(),fNlayer[fI]};
1402 AliITSclusterV2 * cl2 = new (cl[ncl]) AliITSclusterV2(milab,lp,info);
1403 ncl++;
1404 cl2->SetChargeRatio(ratio);
1405 cl2->SetType(100+cpositive[j]+cnegative[i]);
1406 //cl2->SetType(0);
1407 /*
1408 if (pairs[i][j]<100){
1409 printf("problem:- %d\n", pairs[i][j]);
1410 }
1411 if (cnegative[i]<2&&cpositive[j]<2){
1412 printf("problem:- %d\n", pairs[i][j]);
1413 }
1414 */
c391f9d9 1415 }
1416 }
c391f9d9 1417 }
1418}
1419
e43c066c 1420
7f4044f0 1421void AliITSclustererV2::
e43c066c 1422FindClustersSSD(const TClonesArray *alldigits, TClonesArray *clusters) {
7f4044f0 1423 //------------------------------------------------------------
1424 // Actual SSD cluster finder
1425 //------------------------------------------------------------
e43c066c 1426 Int_t smaxall=alldigits->GetEntriesFast();
1427 if (smaxall==0) return;
1428 TObjArray *digits = new TObjArray;
1429 for (Int_t i=0;i<smaxall; i++){
1430 AliITSdigitSSD *d=(AliITSdigitSSD*)alldigits->UncheckedAt(i);
1431 if (d->GetSignal()<3) continue;
1432 digits->AddLast(d);
1433 }
1434 Int_t smax = digits->GetEntriesFast();
7f4044f0 1435 if (smax==0) return;
e43c066c 1436
7f4044f0 1437 const Int_t MAX=1000;
1438 Int_t np=0, nn=0;
1439 Ali1Dcluster pos[MAX], neg[MAX];
1440 Float_t y=0., q=0., qmax=0.;
1441 Int_t lab[4]={-2,-2,-2,-2};
e43c066c 1442
7f4044f0 1443 AliITSdigitSSD *d=(AliITSdigitSSD*)digits->UncheckedAt(0);
1444 q += d->GetSignal();
1445 y += d->GetCoord2()*d->GetSignal();
1446 qmax=d->GetSignal();
1447 lab[0]=d->GetTrack(0); lab[1]=d->GetTrack(1); lab[2]=d->GetTrack(2);
1448 Int_t curr=d->GetCoord2();
1449 Int_t flag=d->GetCoord1();
1450 Int_t *n=&nn;
1451 Ali1Dcluster *c=neg;
c391f9d9 1452 Int_t nd=1;
e43c066c 1453 Int_t milab[10];
1454 for (Int_t ilab=0;ilab<10;ilab++){
1455 milab[ilab]=-2;
1456 }
1457 milab[0]=d->GetTrack(0); milab[1]=d->GetTrack(1); milab[2]=d->GetTrack(2);
1458
7f4044f0 1459 for (Int_t s=1; s<smax; s++) {
e43c066c 1460 d=(AliITSdigitSSD*)digits->UncheckedAt(s);
7f4044f0 1461 Int_t strip=d->GetCoord2();
1462 if ((strip-curr) > 1 || flag!=d->GetCoord1()) {
1463 c[*n].SetY(y/q);
1464 c[*n].SetQ(q);
1465 c[*n].SetNd(nd);
e43c066c 1466 CheckLabels2(milab);
1467 c[*n].SetLabels(milab);
7f4044f0 1468 //Split suspiciously big cluster
e43c066c 1469 /*
1470 if (nd>10&&nd<16){
1471 c[*n].SetY(y/q-0.3*nd);
1472 c[*n].SetQ(0.5*q);
1473 (*n)++;
1474 if (*n==MAX) {
1475 Error("FindClustersSSD","Too many 1D clusters !");
7f4044f0 1476 return;
e43c066c 1477 }
1478 c[*n].SetY(y/q-0.0*nd);
1479 c[*n].SetQ(0.5*q);
1480 c[*n].SetNd(nd);
1481 (*n)++;
1482 if (*n==MAX) {
1483 Error("FindClustersSSD","Too many 1D clusters !");
1484 return;
1485 }
1486 //
1487 c[*n].SetY(y/q+0.3*nd);
1488 c[*n].SetQ(0.5*q);
1489 c[*n].SetNd(nd);
1490 c[*n].SetLabels(milab);
1491 }
1492 else{
1493 */
1494 if (nd>4&&nd<25) {
1495 c[*n].SetY(y/q-0.25*nd);
1496 c[*n].SetQ(0.5*q);
1497 (*n)++;
1498 if (*n==MAX) {
1499 Error("FindClustersSSD","Too many 1D clusters !");
1500 return;
1501 }
1502 c[*n].SetY(y/q+0.25*nd);
1503 c[*n].SetQ(0.5*q);
1504 c[*n].SetNd(nd);
1505 c[*n].SetLabels(milab);
1506 }
7f4044f0 1507 (*n)++;
1508 if (*n==MAX) {
c630aafd 1509 Error("FindClustersSSD","Too many 1D clusters !");
7f4044f0 1510 return;
1511 }
1512 y=q=qmax=0.;
1513 nd=0;
1514 lab[0]=lab[1]=lab[2]=-2;
e43c066c 1515 //
1516 for (Int_t ilab=0;ilab<10;ilab++){
1517 milab[ilab]=-2;
1518 }
1519 //
7f4044f0 1520 if (flag!=d->GetCoord1()) { n=&np; c=pos; }
1521 }
1522 flag=d->GetCoord1();
1523 q += d->GetSignal();
1524 y += d->GetCoord2()*d->GetSignal();
1525 nd++;
1526 if (d->GetSignal()>qmax) {
1527 qmax=d->GetSignal();
1528 lab[0]=d->GetTrack(0); lab[1]=d->GetTrack(1); lab[2]=d->GetTrack(2);
1529 }
e43c066c 1530 for (Int_t ilab=0;ilab<10;ilab++) {
1531 if (d->GetTrack(ilab)>=0) AddLabel(milab, (d->GetTrack(ilab)));
1532 }
7f4044f0 1533 curr=strip;
1534 }
1535 c[*n].SetY(y/q);
1536 c[*n].SetQ(q);
1537 c[*n].SetNd(nd);
1538 c[*n].SetLabels(lab);
1539 //Split suspiciously big cluster
1540 if (nd>3) {
1541 c[*n].SetY(y/q-0.5*nd);
1542 c[*n].SetQ(0.5*q);
1543 (*n)++;
1544 if (*n==MAX) {
c630aafd 1545 Error("FindClustersSSD","Too many 1D clusters !");
7f4044f0 1546 return;
1547 }
1548 c[*n].SetY(y/q+0.5*nd);
1549 c[*n].SetQ(0.5*q);
1550 c[*n].SetNd(nd);
1551 c[*n].SetLabels(lab);
1552 }
1553 (*n)++;
1554 if (*n==MAX) {
c630aafd 1555 Error("FindClustersSSD","Too many 1D clusters !");
7f4044f0 1556 return;
1557 }
1558
c391f9d9 1559 FindClustersSSD(neg, nn, pos, np, clusters);
1560}
7f4044f0 1561
c391f9d9 1562void AliITSclustererV2::FindClustersSSD(AliITSRawStream* input,
1563 TClonesArray** clusters)
1564{
1565 //------------------------------------------------------------
1566 // Actual SSD cluster finder for raw data
1567 //------------------------------------------------------------
1568 Int_t nClustersSSD = 0;
1569 const Int_t MAX = 1000;
1570 Ali1Dcluster clusters1D[2][MAX];
1571 Int_t nClusters[2] = {0, 0};
1572 Float_t q = 0.;
1573 Float_t y = 0.;
1574 Int_t nDigits = 0;
1575 Int_t prevStrip = -1;
1576 Int_t prevFlag = -1;
1577
1578 // read raw data input stream
1579 while (kTRUE) {
1580 Bool_t next = input->Next();
1581
1582 // check if a new cluster starts
1583 Int_t strip = input->GetCoord2();
1584 Int_t flag = input->GetCoord1();
1585 if ((!next || input->IsNewModule() ||
1586 (strip-prevStrip > 1) || (flag != prevFlag)) &&
1587 (nDigits > 0)) {
1588 if (nClusters[prevFlag] == MAX) {
1589 Error("FindClustersSSD", "Too many 1D clusters !");
1590 return;
1591 }
1592 Ali1Dcluster& cluster = clusters1D[prevFlag][nClusters[prevFlag]++];
1593 cluster.SetY(y/q);
1594 cluster.SetQ(q);
1595 cluster.SetNd(nDigits);
1596
1597 //Split suspiciously big cluster
1598 if (nDigits > 3) {
1599 cluster.SetY(y/q - 0.5*nDigits);
1600 cluster.SetQ(0.5*q);
1601 if (nClusters[prevFlag] == MAX) {
1602 Error("FindClustersSSD", "Too many 1D clusters !");
1603 return;
1604 }
1605 Ali1Dcluster& cluster2 = clusters1D[prevFlag][nClusters[prevFlag]++];
1606 cluster2.SetY(y/q + 0.5*nDigits);
1607 cluster2.SetQ(0.5*q);
1608 cluster2.SetNd(nDigits);
7f4044f0 1609 }
c391f9d9 1610 y = q = 0.;
1611 nDigits = 0;
7f4044f0 1612 }
c391f9d9 1613
1614 if (!next || input->IsNewModule()) {
1615 Int_t iModule = input->GetPrevModuleID();
1616
1617 // when all data from a module was read, search for clusters
1618 if (prevFlag >= 0) {
1619 clusters[iModule] = new TClonesArray("AliITSclusterV2");
1620 fI = iModule;
1621 FindClustersSSD(&clusters1D[0][0], nClusters[0],
1622 &clusters1D[1][0], nClusters[1], clusters[iModule]);
1623 Int_t nClusters = clusters[iModule]->GetEntriesFast();
1624 nClustersSSD += nClusters;
1625 }
1626
1627 if (!next) break;
1628 nClusters[0] = nClusters[1] = 0;
1629 y = q = 0.;
1630 nDigits = 0;
7f4044f0 1631 }
c391f9d9 1632
1633 // add digit to current cluster
1634 q += input->GetSignal();
1635 y += strip * input->GetSignal();
1636 nDigits++;
1637 prevStrip = strip;
1638 prevFlag = flag;
7f4044f0 1639 }
c391f9d9 1640
1641 Info("FindClustersSSD", "found clusters in ITS SSD: %d", nClustersSSD);
7f4044f0 1642}
1643
1644#else //V1
1645
1646#include "AliITSDetType.h"
1647
1648#include "AliITSsegmentationSPD.h"
1649#include "AliITSClusterFinderSPD.h"
1650
1651#include "AliITSresponseSDD.h"
1652#include "AliITSsegmentationSDD.h"
1653#include "AliITSClusterFinderSDD.h"
1654
1655#include "AliITSsegmentationSSD.h"
1656#include "AliITSClusterFinderSSD.h"
1657
1658
1659void AliITSclustererV2::
1660FindClustersSPD(const TClonesArray *digits, TClonesArray *clusters) {
1661 //------------------------------------------------------------
1662 // Actual SPD cluster finding based on AliITSClusterFinderSPD
1663 //------------------------------------------------------------
1664 static AliITS *its=(AliITS*)gAlice->GetModule("ITS");
1665 static TClonesArray *points=its->RecPoints();
1666 static AliITSsegmentationSPD *seg=
1667 (AliITSsegmentationSPD *)its->DetType(0)->GetSegmentationModel();
1668 static AliITSClusterFinderSPD cf(seg, (TClonesArray*)digits, points);
1669
1670 cf.FindRawClusters(fI);
1cca57bf 1671 RecPoints2Clusters(points, fI, clusters);
7f4044f0 1672 its->ResetRecPoints();
1673
1674}
1675
1676void AliITSclustererV2::
1677FindClustersSDD(const TClonesArray *digits, TClonesArray *clusters) {
1678 //------------------------------------------------------------
1679 // Actual SDD cluster finding based on AliITSClusterFinderSDD
1680 //------------------------------------------------------------
1681 static AliITS *its=(AliITS*)gAlice->GetModule("ITS");
1682 static TClonesArray *points=its->RecPoints();
1683 static AliITSresponseSDD *resp=
1684 (AliITSresponseSDD *)its->DetType(1)->GetResponseModel();
1685 static AliITSsegmentationSDD *seg=
1686 (AliITSsegmentationSDD *)its->DetType(1)->GetSegmentationModel();
1687 static AliITSClusterFinderSDD
1688 cf(seg,resp,(TClonesArray*)digits,its->ClustersAddress(1));
1689
1690 cf.FindRawClusters(fI);
1cca57bf 1691 Int_t nc=points->GetEntriesFast();
1692 while (nc--) { //To be consistent with the SSD cluster charges
1693 AliITSRecPoint *p=(AliITSRecPoint*)points->UncheckedAt(nc);
e3d91d99 1694 p->SetQ(p->GetQ()/12.);
1cca57bf 1695 }
1696 RecPoints2Clusters(points, fI, clusters);
7f4044f0 1697 its->ResetClusters(1);
1698 its->ResetRecPoints();
1699
1700}
1701
1702void AliITSclustererV2::
1703FindClustersSSD(const TClonesArray *digits, TClonesArray *clusters) {
1704 //------------------------------------------------------------
1705 // Actual SSD cluster finding based on AliITSClusterFinderSSD
1706 //------------------------------------------------------------
1707 static AliITS *its=(AliITS*)gAlice->GetModule("ITS");
1708 static TClonesArray *points=its->RecPoints();
1709 static AliITSsegmentationSSD *seg=
1710 (AliITSsegmentationSSD *)its->DetType(2)->GetSegmentationModel();
1711 static AliITSClusterFinderSSD cf(seg,(TClonesArray*)digits);
1712
1713 cf.FindRawClusters(fI);
1cca57bf 1714 RecPoints2Clusters(points, fI, clusters);
7f4044f0 1715 its->ResetRecPoints();
1716
1717}
1718
1719#endif