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bugfix: set output size to 0 in case of special events and absent output
[u/mrichter/AliRoot.git] / ITS / AliITSClusterFinderV2SSD.cxx
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04366a57 1/**************************************************************************
b42cfa25 2 * Copyright(c) 2007-2009, ALICE Experiment at CERN, All rights reserved. *
04366a57 3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
308b5ea4 15
16/* $Id$ */
17
04366a57 18////////////////////////////////////////////////////////////////////////////
19// Implementation of the ITS clusterer V2 class //
20// //
21// Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch //
308b5ea4 22// Revised: Enrico Fragiacomo, enrico.fragiacomo@ts.infn.it //
04366a57 23// //
24///////////////////////////////////////////////////////////////////////////
25
308b5ea4 26#include <Riostream.h>
27
04366a57 28
29#include "AliITSClusterFinderV2SSD.h"
00a7cc50 30#include "AliITSRecPoint.h"
1f3e997f 31#include "AliITSgeomTGeo.h"
7d62fb64 32#include "AliITSDetTypeRec.h"
04366a57 33#include "AliRawReader.h"
34#include "AliITSRawStreamSSD.h"
04366a57 35#include <TClonesArray.h>
04366a57 36#include "AliITSdigitSSD.h"
a86176e3 37#include "AliITSReconstructor.h"
3a4139a2 38#include "AliITSCalibrationSSD.h"
04366a57 39
308b5ea4 40Short_t *AliITSClusterFinderV2SSD::fgPairs = 0x0;
41Int_t AliITSClusterFinderV2SSD::fgPairsSize = 0;
c157c94e 42
04366a57 43ClassImp(AliITSClusterFinderV2SSD)
44
45
e56160b8 46AliITSClusterFinderV2SSD::AliITSClusterFinderV2SSD(AliITSDetTypeRec* dettyp):AliITSClusterFinderV2(dettyp),
1f3e997f 47fLastSSD1(AliITSgeomTGeo::GetModuleIndex(6,1,1)-1),
e56160b8 48fYpitchSSD(0.0095),
49fHwSSD(3.65),
50fHlSSD(2.00),
51fTanP(0.0275),
52fTanN(0.0075){
04366a57 53
54 //Default constructor
55
04366a57 56}
57
308b5ea4 58//______________________________________________________________________
59AliITSClusterFinderV2SSD::AliITSClusterFinderV2SSD(const AliITSClusterFinderV2SSD &cf) : AliITSClusterFinderV2(cf), fLastSSD1(cf.fLastSSD1),
60fYpitchSSD(cf.fYpitchSSD),
61fHwSSD(cf.fHwSSD),
62fHlSSD(cf.fHlSSD),
63fTanP(cf.fTanP),
64fTanN(cf.fTanN)
65{
66 // Copy constructor
67
68}
69
70//______________________________________________________________________
71AliITSClusterFinderV2SSD& AliITSClusterFinderV2SSD::operator=(const AliITSClusterFinderV2SSD& cf ){
72 // Assignment operator
73
74 this->~AliITSClusterFinderV2SSD();
75 new(this) AliITSClusterFinderV2SSD(cf);
76 return *this;
77}
78
04366a57 79
80void AliITSClusterFinderV2SSD::FindRawClusters(Int_t mod){
81
82 //Find clusters V2
83 SetModule(mod);
84 FindClustersSSD(fDigits);
85
86}
87
88void AliITSClusterFinderV2SSD::FindClustersSSD(TClonesArray *alldigits) {
89 //------------------------------------------------------------
90 // Actual SSD cluster finder
91 //------------------------------------------------------------
a86176e3 92
93 static AliITSRecoParam *repa = NULL;
94 if(!repa){
95 repa = (AliITSRecoParam*) AliITSReconstructor::GetRecoParam();
96 if(!repa){
ed446fa3 97 repa = AliITSRecoParam::GetHighFluxParam();
a86176e3 98 AliWarning("Using default AliITSRecoParam class");
99 }
100 }
101
3a4139a2 102 AliITSCalibrationSSD* cal = (AliITSCalibrationSSD*)GetResp(fModule);
103 Float_t gain=0;
104
04366a57 105 Int_t smaxall=alldigits->GetEntriesFast();
106 if (smaxall==0) return;
f7b30404 107 // TObjArray *digits = new TObjArray;
108 TObjArray digits;
04366a57 109 for (Int_t i=0;i<smaxall; i++){
110 AliITSdigitSSD *d=(AliITSdigitSSD*)alldigits->UncheckedAt(i);
3a4139a2 111
112 if(d->IsSideP()) gain = cal->GetGainP(d->GetStripNumber());
113 else gain = cal->GetGainN(d->GetStripNumber());
114
115 Float_t q=gain*d->GetSignal(); // calibration brings mip peaks around 120 (in ADC units)
116 q=cal->ADCToKeV(q); // converts the charge in KeV from ADC units
117 //Float_t q=d->GetSignal()/4.29;// temp. fix (for PID purposed - normalis. to be checked)
6490e1c5 118 d->SetSignal(Int_t(q));
3a4139a2 119
04366a57 120 if (d->GetSignal()<3) continue;
f7b30404 121 digits.AddLast(d);
04366a57 122 }
f7b30404 123 Int_t smax = digits.GetEntriesFast();
04366a57 124 if (smax==0) return;
125
126 const Int_t kMax=1000;
127 Int_t np=0, nn=0;
128 Ali1Dcluster pos[kMax], neg[kMax];
129 Float_t y=0., q=0., qmax=0.;
130 Int_t lab[4]={-2,-2,-2,-2};
131
f7b30404 132 AliITSdigitSSD *d=(AliITSdigitSSD*)digits.UncheckedAt(0);
04366a57 133 q += d->GetSignal();
134 y += d->GetCoord2()*d->GetSignal();
135 qmax=d->GetSignal();
136 lab[0]=d->GetTrack(0); lab[1]=d->GetTrack(1); lab[2]=d->GetTrack(2);
137 Int_t curr=d->GetCoord2();
138 Int_t flag=d->GetCoord1();
139 Int_t *n=&nn;
140 Ali1Dcluster *c=neg;
141 Int_t nd=1;
142 Int_t milab[10];
143 for (Int_t ilab=0;ilab<10;ilab++){
144 milab[ilab]=-2;
145 }
146 milab[0]=d->GetTrack(0); milab[1]=d->GetTrack(1); milab[2]=d->GetTrack(2);
147
148 for (Int_t s=1; s<smax; s++) {
f7b30404 149 d=(AliITSdigitSSD*)digits.UncheckedAt(s);
04366a57 150 Int_t strip=d->GetCoord2();
151 if ((strip-curr) > 1 || flag!=d->GetCoord1()) {
152 c[*n].SetY(y/q);
153 c[*n].SetQ(q);
154 c[*n].SetNd(nd);
155 CheckLabels2(milab);
156 c[*n].SetLabels(milab);
a86176e3 157
158 if(repa->GetUseUnfoldingInClusterFinderSSD()==kTRUE) {
159
160 //Split suspiciously big cluster
161 if (nd>4&&nd<25) {
162 c[*n].SetY(y/q-0.25*nd);
163 c[*n].SetQ(0.5*q);
164 (*n)++;
165 if (*n==kMax) {
166 Error("FindClustersSSD","Too many 1D clusters !");
167 return;
168 }
169 c[*n].SetY(y/q+0.25*nd);
170 c[*n].SetQ(0.5*q);
171 c[*n].SetNd(nd);
172 c[*n].SetLabels(milab);
173 }
174
175 } // unfolding is on
176
04366a57 177 (*n)++;
178 if (*n==kMax) {
179 Error("FindClustersSSD","Too many 1D clusters !");
180 return;
181 }
182 y=q=qmax=0.;
183 nd=0;
184 lab[0]=lab[1]=lab[2]=-2;
185 //
186 for (Int_t ilab=0;ilab<10;ilab++){
187 milab[ilab]=-2;
188 }
189 //
190 if (flag!=d->GetCoord1()) { n=&np; c=pos; }
191 }
192 flag=d->GetCoord1();
193 q += d->GetSignal();
194 y += d->GetCoord2()*d->GetSignal();
195 nd++;
196 if (d->GetSignal()>qmax) {
197 qmax=d->GetSignal();
198 lab[0]=d->GetTrack(0); lab[1]=d->GetTrack(1); lab[2]=d->GetTrack(2);
199 }
200 for (Int_t ilab=0;ilab<10;ilab++) {
201 if (d->GetTrack(ilab)>=0) AddLabel(milab, (d->GetTrack(ilab)));
202 }
203 curr=strip;
204 }
205 c[*n].SetY(y/q);
206 c[*n].SetQ(q);
207 c[*n].SetNd(nd);
208 c[*n].SetLabels(lab);
a86176e3 209
210 if(repa->GetUseUnfoldingInClusterFinderSSD()==kTRUE) {
211
212 //Split suspiciously big cluster
213 if (nd>4 && nd<25) {
214 c[*n].SetY(y/q-0.25*nd);
215 c[*n].SetQ(0.5*q);
216 (*n)++;
217 if (*n==kMax) {
04366a57 218 Error("FindClustersSSD","Too many 1D clusters !");
219 return;
a86176e3 220 }
221 c[*n].SetY(y/q+0.25*nd);
222 c[*n].SetQ(0.5*q);
223 c[*n].SetNd(nd);
224 c[*n].SetLabels(lab);
225 }
226 } // unfolding is on
227
04366a57 228 (*n)++;
229 if (*n==kMax) {
230 Error("FindClustersSSD","Too many 1D clusters !");
231 return;
232 }
233
234 FindClustersSSD(neg, nn, pos, np);
235}
236
237
238void AliITSClusterFinderV2SSD::RawdataToClusters(AliRawReader* rawReader,TClonesArray** clusters){
239
240 //------------------------------------------------------------
241 // This function creates ITS clusters from raw data
242 //------------------------------------------------------------
243 rawReader->Reset();
b42cfa25 244 /*
245 const UInt_t *evid; evid = rawReader->GetEventId();
246 cout<<"Event="<<evid[0]<<endl;
247 */
04366a57 248 AliITSRawStreamSSD inputSSD(rawReader);
8297cd8f 249 // rawReader->SelectEquipment(-1,0,15);
04366a57 250 FindClustersSSD(&inputSSD,clusters);
251
252}
253
3a4139a2 254void AliITSClusterFinderV2SSD::FindClustersSSD(AliITSRawStreamSSD* input,
04366a57 255 TClonesArray** clusters)
256{
257 //------------------------------------------------------------
258 // Actual SSD cluster finder for raw data
259 //------------------------------------------------------------
a86176e3 260
261 static AliITSRecoParam *repa = NULL;
262 if(!repa){
263 repa = (AliITSRecoParam*) AliITSReconstructor::GetRecoParam();
264 if(!repa){
ed446fa3 265 repa = AliITSRecoParam::GetHighFluxParam();
a86176e3 266 AliWarning("Using default AliITSRecoParam class");
267 }
268 }
269
04366a57 270 Int_t nClustersSSD = 0;
271 const Int_t kMax = 1000;
272 Ali1Dcluster clusters1D[2][kMax];
273 Int_t nClusters[2] = {0, 0};
274 Int_t lab[3]={-2,-2,-2};
275 Float_t q = 0.;
276 Float_t y = 0.;
277 Int_t nDigits = 0;
3a4139a2 278 Float_t gain=0;
308b5ea4 279 Float_t noise=0.;
5ffe058f 280 // Float_t pedestal=0.;
308b5ea4 281 Float_t oldnoise=0.;
b4704be3 282 AliITSCalibrationSSD* cal=NULL;
308b5ea4 283
308b5ea4 284 Int_t matrix[12][1536];
d5ad0697 285 Int_t iddl=-1;
286 Int_t iad=-1;
287 Int_t oddl = -1;
288 Int_t oad = -1;
289 Int_t oadc = -1;
290 Int_t ostrip = -1;
308b5ea4 291 Int_t osignal = 65535;
308b5ea4 292 Int_t n=0;
293 Bool_t next=0;
04366a57 294
295 // read raw data input stream
296 while (kTRUE) {
308b5ea4 297
298 // reset signal matrix
299 for(Int_t i=0; i<12; i++) { for(Int_t j=0; j<1536; j++) { matrix[i][j] = 65535;} }
b42cfa25 300
308b5ea4 301 if(osignal!=65535) {
302 n++;
303 matrix[oadc][ostrip] = osignal; // recover data from previous occurence of input->Next()
304 }
b42cfa25 305
308b5ea4 306 // buffer data for ddl=iddl and ad=iad
307 while(kTRUE) {
bc4dd89a 308
308b5ea4 309 next = input->Next();
d5ad0697 310 if((!next)&&(input->flag)) continue;
311 Int_t ddl=input->GetDDL();
312 Int_t ad=input->GetAD();
313 Int_t adc = input->GetADC(); adc = (adc<6)? adc : adc - 2;
314 Int_t strip = input->GetStrip();
308b5ea4 315 if(input->GetSideFlag()) strip=1535-strip;
d5ad0697 316 Int_t signal = input->GetSignal();
308b5ea4 317 //cout<<ddl<<" "<<ad<<" "<<adc<<" "<<strip<<" "<<signal<<endl;
b42cfa25 318
308b5ea4 319 if((ddl==iddl)&&(ad==iad)) {n++; matrix[adc][strip] = signal;}
320 else {oddl=iddl; oad=iad; oadc = adc; ostrip = strip; osignal=signal; iddl=ddl; iad=ad; break;}
321
b42cfa25 322 if(!next) {oddl=iddl; oad=iad; oadc = adc; ostrip = strip; osignal=signal; iddl=ddl; iad=ad; break;}
323 //break;
308b5ea4 324 }
b42cfa25 325
326 // No SSD data
d5ad0697 327 if(!next && oddl<0) break;
b42cfa25 328
308b5ea4 329 if(n==0) continue; // first occurence
330 n=0; osignal=0;
b42cfa25 331
308b5ea4 332 // fill 1Dclusters
333 for(Int_t iadc=0; iadc<12; iadc++) { // loop over ADC index for ddl=oddl and ad=oad
b42cfa25 334
308b5ea4 335 Int_t iimod = (oad - 1) * 12 + iadc;
d5ad0697 336 Int_t iModule = AliITSRawStreamSSD::GetModuleNumber(oddl,iimod);
308b5ea4 337 if(iModule==-1) continue;
b42cfa25 338 // cout<<"ddl="<<oddl<<" ad"<<oad<<" module="<<iModule<<endl;
308b5ea4 339 cal = (AliITSCalibrationSSD*)GetResp(iModule);
b42cfa25 340
308b5ea4 341 Bool_t first = 0;
b42cfa25 342
bc4dd89a 343 /*
308b5ea4 344 for(Int_t istrip=0; istrip<768; istrip++) { // P-side
d5ad0697 345 Int_t signal = matrix[iadc][istrip];
b42cfa25 346 pedestal = cal->GetPedestalP(istrip);
e7f0e76b 347 matrix[iadc][istrip]=signal-(Int_t)pedestal;
bc4dd89a 348 }
349 */
350
351 /*
b42cfa25 352 Float_t cmode=0;
353 for(Int_t l=0; l<6; l++) {
354 cmode=0;
355 for(Int_t n=20; n<108; n++) cmode+=matrix[iadc][l*128+n];
356 cmode/=88.;
e7f0e76b 357 for(Int_t n=0; n<128; n++) matrix[iadc][l*128+n]-=(Int_t)cmode;
b42cfa25 358
359 }
bc4dd89a 360 */
361
a64f9843 362 Int_t istrip=0;
363 for(istrip=0; istrip<768; istrip++) { // P-side
b42cfa25 364
365 Int_t signal = TMath::Abs(matrix[iadc][istrip]);
366
308b5ea4 367 oldnoise = noise;
b42cfa25 368 noise = cal->GetNoiseP(istrip); if(noise<1.) signal = 65535;
a64f9843 369 if(signal<3*noise) signal = 65535; // in case ZS was not done in hw do it now
370
371 //if(cal->IsPChannelBad(istrip)) cout<<iModule<<" "<<istrip<<endl;
372 if(cal->IsPChannelBad(istrip)) signal=0;
308b5ea4 373
374 if (signal!=65535) {
375 gain = cal->GetGainP(istrip);
376 signal = (Int_t) ( signal * gain ); // signal is corrected for gain
308b5ea4 377 signal = (Int_t) cal->ADCToKeV( signal ); // signal is converted in KeV
b42cfa25 378
308b5ea4 379 q += signal; // add digit to current cluster
380 y += istrip * signal;
381 nDigits++;
382 first=1;
383 }
b42cfa25 384
308b5ea4 385 else if(first) {
b42cfa25 386
a64f9843 387 if ( ( (nDigits==1) && ( (q==0) || (q>5*oldnoise)) ) || (nDigits>1) ) {
b42cfa25 388
308b5ea4 389 Ali1Dcluster& cluster = clusters1D[0][nClusters[0]++];
a64f9843 390
391 if(q!=0) cluster.SetY(y/q);
392 else cluster.SetY(istrip-1);
393
308b5ea4 394 cluster.SetQ(q);
395 cluster.SetNd(nDigits);
396 cluster.SetLabels(lab);
397
a86176e3 398 if(repa->GetUseUnfoldingInClusterFinderSSD()==kTRUE) {
399
400 //Split suspiciously big cluster
401 if (nDigits > 4&&nDigits < 25) {
982ce430 402 if(q!=0) cluster.SetY(y/q - 0.25*nDigits);
403 else cluster.SetY(istrip-1 - 0.25*nDigits);
a86176e3 404 cluster.SetQ(0.5*q);
405 if (nClusters[0] == kMax) {
406 Error("FindClustersSSD", "Too many 1D clusters !");
407 return;
408 }
409 Ali1Dcluster& cluster2 = clusters1D[0][nClusters[0]++];
982ce430 410 if(q!=0) cluster2.SetY(y/q + 0.25*nDigits);
411 else cluster2.SetY(istrip-1 + 0.25*nDigits);
a86176e3 412 cluster2.SetQ(0.5*q);
413 cluster2.SetNd(nDigits);
414 cluster2.SetLabels(lab);
308b5ea4 415 }
a86176e3 416 } // unfolding is on
308b5ea4 417 }
418
419 y = q = 0.;
420 nDigits = 0;
421 first=0;
04366a57 422 }
a86176e3 423
308b5ea4 424 } // loop over strip on P-side
a86176e3 425
308b5ea4 426 // if last strip does have signal
427 if(first) {
428
a64f9843 429 if ( ( (nDigits==1) && ( (q==0) || (q>5*oldnoise)) ) || (nDigits>1) ) {
a86176e3 430
431 Ali1Dcluster& cluster = clusters1D[0][nClusters[0]++];
a64f9843 432
433 if(q!=0) cluster.SetY(y/q);
434 else cluster.SetY(istrip-1);
435
a86176e3 436 cluster.SetQ(q);
437 cluster.SetNd(nDigits);
438 cluster.SetLabels(lab);
439
440 if(repa->GetUseUnfoldingInClusterFinderSSD()==kTRUE) {
308b5ea4 441
442 //Split suspiciously big cluster
443 if (nDigits > 4&&nDigits < 25) {
982ce430 444 if(q!=0) cluster.SetY(y/q - 0.25*nDigits);
445 else cluster.SetY(istrip-1 - 0.25*nDigits);
308b5ea4 446 cluster.SetQ(0.5*q);
447 if (nClusters[0] == kMax) {
448 Error("FindClustersSSD", "Too many 1D clusters !");
449 return;
450 }
451 Ali1Dcluster& cluster2 = clusters1D[0][nClusters[0]++];
982ce430 452 if(q!=0) cluster2.SetY(y/q + 0.25*nDigits);
453 else cluster2.SetY(istrip-1 + 0.25*nDigits);
308b5ea4 454 cluster2.SetQ(0.5*q);
455 cluster2.SetNd(nDigits);
456 cluster2.SetLabels(lab);
457 }
a86176e3 458 } // unfolding is on
459
460 }
461 y = q = 0.;
462 nDigits = 0;
463 first=0;
04366a57 464 }
308b5ea4 465
bc4dd89a 466 /*
b42cfa25 467 for(Int_t istrip=768; istrip<1536; istrip++) { // P-side
468 Int_t signal = matrix[iadc][istrip];
469 pedestal = cal->GetPedestalN(1535-istrip);
e7f0e76b 470 matrix[iadc][istrip]=signal-(Int_t)pedestal;
b42cfa25 471 }
bc4dd89a 472 */
b42cfa25 473
bc4dd89a 474 /*
b42cfa25 475 for(Int_t l=6; l<12; l++) {
476 Float_t cmode=0;
477 for(Int_t n=20; n<108; n++) cmode+=matrix[iadc][l*128+n];
478 cmode/=88.;
e7f0e76b 479 for(Int_t n=0; n<128; n++) matrix[iadc][l*128+n]-=(Int_t)cmode;
b42cfa25 480 }
bc4dd89a 481 */
b42cfa25 482
308b5ea4 483 oldnoise = 0.;
484 noise = 0.;
a64f9843 485 Int_t strip=0;
308b5ea4 486 for(Int_t istrip=768; istrip<1536; istrip++) { // N-side
487
b42cfa25 488 Int_t signal = TMath::Abs(matrix[iadc][istrip]);
489 //cout<<"####"<<" "<<oddl<<" "<<oad<<" "<<iadc<<" "<<istrip<<" "<<signal<<endl;
a64f9843 490 strip = 1535-istrip;
b42cfa25 491
308b5ea4 492 oldnoise = noise;
b42cfa25 493 noise = cal->GetNoiseN(strip); if(noise<1.) signal=65535;
a64f9843 494
495 if(cal->IsNChannelBad(strip)) signal=0;
496
497 if(signal<3*noise) signal = 65535; // in case ZS was not done in hw do it now
308b5ea4 498
499 if (signal!=65535) {
b42cfa25 500 // cout<<"ddl="<<oddl<<" ad"<<oad<<" module="<<iModule<<" strip= "<<istrip<<
501 // " sig="<<signal<<" "<<cal->GetPedestalN(strip)<<endl;
308b5ea4 502 gain = cal->GetGainN(strip);
503 signal = (Int_t) ( signal * gain); // signal is corrected for gain
504 signal = (Int_t) cal->ADCToKeV( signal ); // signal is converted in KeV
505
506 // add digit to current cluster
507 q += signal;
508 y += strip * signal;
509 nDigits++;
510 first=1;
511 }
512
513 else if(first) {
a86176e3 514
a64f9843 515 if ( ( (nDigits==1) && ( (q==0) || (q>5*oldnoise)) ) || (nDigits>1) ) {
308b5ea4 516
517 Ali1Dcluster& cluster = clusters1D[1][nClusters[1]++];
a64f9843 518
519 if(q!=0) cluster.SetY(y/q);
520 else cluster.SetY(strip+1);
521
308b5ea4 522 cluster.SetQ(q);
523 cluster.SetNd(nDigits);
524 cluster.SetLabels(lab);
525
a86176e3 526 if(repa->GetUseUnfoldingInClusterFinderSSD()==kTRUE) {
527
528 //Split suspiciously big cluster
529 if (nDigits > 4&&nDigits < 25) {
530 cluster.SetY(y/q - 0.25*nDigits);
531 cluster.SetQ(0.5*q);
532 if (nClusters[1] == kMax) {
533 Error("FindClustersSSD", "Too many 1D clusters !");
534 return;
535 }
536 Ali1Dcluster& cluster2 = clusters1D[1][nClusters[1]++];
537 cluster2.SetY(y/q + 0.25*nDigits);
538 cluster2.SetQ(0.5*q);
539 cluster2.SetNd(nDigits);
540 cluster2.SetLabels(lab);
541 }
542 } // unfolding is on
543 }
544
308b5ea4 545 y = q = 0.;
546 nDigits = 0;
547 first=0;
548 }
549
550 } // loop over strips on N-side
04366a57 551
308b5ea4 552 if(first) {
553
a64f9843 554 if ( ( (nDigits==1) && ( (q==0) || (q>5*oldnoise)) ) || (nDigits>1) ) {
a86176e3 555
556 Ali1Dcluster& cluster = clusters1D[1][nClusters[1]++];
a64f9843 557
558 if(q!=0) cluster.SetY(y/q);
559 else cluster.SetY(strip+1);
560
a86176e3 561 cluster.SetQ(q);
562 cluster.SetNd(nDigits);
563 cluster.SetLabels(lab);
564
565 if(repa->GetUseUnfoldingInClusterFinderSSD()==kTRUE) {
308b5ea4 566
567 //Split suspiciously big cluster
568 if (nDigits > 4&&nDigits < 25) {
982ce430 569 if(q!=0) cluster.SetY(y/q - 0.25*nDigits);
570 else cluster.SetY(strip+1 - 0.25*nDigits);
308b5ea4 571 cluster.SetQ(0.5*q);
572 if (nClusters[1] == kMax) {
573 Error("FindClustersSSD", "Too many 1D clusters !");
574 return;
575 }
576 Ali1Dcluster& cluster2 = clusters1D[1][nClusters[1]++];
982ce430 577 if(q!=0) cluster2.SetY(y/q + 0.25*nDigits);
578 else cluster2.SetY(strip+1 + 0.25*nDigits);
308b5ea4 579 cluster2.SetQ(0.5*q);
580 cluster2.SetNd(nDigits);
581 cluster2.SetLabels(lab);
582 }
a86176e3 583 } // unfolding is on
584 }
585
586 y = q = 0.;
587 nDigits = 0;
588 first=0;
308b5ea4 589 }
590
591 // create recpoints
592 if((nClusters[0])&&(nClusters[1])) {
a86176e3 593
00a7cc50 594 clusters[iModule] = new TClonesArray("AliITSRecPoint");
04366a57 595 fModule = iModule;
596 FindClustersSSD(&clusters1D[0][0], nClusters[0],
597 &clusters1D[1][0], nClusters[1], clusters[iModule]);
598 Int_t nClusters = clusters[iModule]->GetEntriesFast();
599 nClustersSSD += nClusters;
600 }
601
04366a57 602 nClusters[0] = nClusters[1] = 0;
603 y = q = 0.;
604 nDigits = 0;
3a4139a2 605
308b5ea4 606 } // loop over adc
04366a57 607
d5ad0697 608 if(!next) break;
04366a57 609 }
308b5ea4 610
04366a57 611 Info("FindClustersSSD", "found clusters in ITS SSD: %d", nClustersSSD);
612}
613
614void AliITSClusterFinderV2SSD::
615FindClustersSSD(Ali1Dcluster* neg, Int_t nn,
616 Ali1Dcluster* pos, Int_t np,
617 TClonesArray *clusters) {
618 //------------------------------------------------------------
619 // Actual SSD cluster finder
620 //------------------------------------------------------------
b4704be3 621
308b5ea4 622 // Float_t xyz[3];
623
b4704be3 624 const TGeoHMatrix *mT2L=AliITSgeomTGeo::GetTracking2LocalMatrix(fModule);
625
04366a57 626 TClonesArray &cl=*clusters;
627 //
628 Float_t tanp=fTanP, tann=fTanN;
629 if (fModule>fLastSSD1) {tann=fTanP; tanp=fTanN;}
630 Int_t idet=fNdet[fModule];
631 Int_t ncl=0;
632 //
633 Int_t negativepair[30000];
634 Int_t cnegative[3000];
635 Int_t cused1[3000];
636 Int_t positivepair[30000];
637 Int_t cpositive[3000];
638 Int_t cused2[3000];
639 for (Int_t i=0;i<3000;i++) {cnegative[i]=0; cused1[i]=0;}
640 for (Int_t i=0;i<3000;i++) {cpositive[i]=0; cused2[i]=0;}
78538bfe 641 for (Int_t i=0;i<30000;i++) {negativepair[i]=0; positivepair[i]=0;}
c157c94e 642
308b5ea4 643 if ((np*nn) > fgPairsSize) {
644 if (fgPairs) delete [] fgPairs;
645 fgPairsSize = 4*np*nn;
646 fgPairs = new Short_t[fgPairsSize];
c157c94e 647 }
308b5ea4 648 memset(fgPairs,0,sizeof(Short_t)*np*nn);
649
04366a57 650 //
651 // find available pairs
652 //
653 for (Int_t i=0; i<np; i++) {
654 Float_t yp=pos[i].GetY()*fYpitchSSD;
a64f9843 655 if ( (pos[i].GetQ()>0) && (pos[i].GetQ()<3) ) continue;
04366a57 656 for (Int_t j=0; j<nn; j++) {
a64f9843 657 if ( (neg[j].GetQ()>0) && (neg[j].GetQ()<3) ) continue;
04366a57 658 Float_t yn=neg[j].GetY()*fYpitchSSD;
659 Float_t zt=(2*fHlSSD*tanp + yp - yn)/(tann+tanp);
660 Float_t yt=yn + tann*zt;
661 zt-=fHlSSD; yt-=fHwSSD;
662 if (TMath::Abs(yt)<fHwSSD+0.01)
663 if (TMath::Abs(zt)<fHlSSD+0.01*(neg[j].GetNd()+pos[i].GetNd())) {
664 negativepair[i*10+cnegative[i]] =j; //index
665 positivepair[j*10+cpositive[j]] =i;
666 cnegative[i]++; //counters
667 cpositive[j]++;
308b5ea4 668 fgPairs[i*nn+j]=100;
04366a57 669 }
670 }
671 }
308b5ea4 672
673 //
674 // try to recover points out of but close to the module boundaries
04366a57 675 //
676 for (Int_t i=0; i<np; i++) {
677 Float_t yp=pos[i].GetY()*fYpitchSSD;
a64f9843 678 if ( (pos[i].GetQ()>0) && (pos[i].GetQ()<3) ) continue;
04366a57 679 for (Int_t j=0; j<nn; j++) {
a64f9843 680 if ( (neg[j].GetQ()>0) && (neg[j].GetQ()<3) ) continue;
308b5ea4 681 // if both 1Dclusters have an other cross continue
04366a57 682 if (cpositive[j]&&cnegative[i]) continue;
683 Float_t yn=neg[j].GetY()*fYpitchSSD;
684 Float_t zt=(2*fHlSSD*tanp + yp - yn)/(tann+tanp);
685 Float_t yt=yn + tann*zt;
686 zt-=fHlSSD; yt-=fHwSSD;
687 if (TMath::Abs(yt)<fHwSSD+0.1)
688 if (TMath::Abs(zt)<fHlSSD+0.15) {
308b5ea4 689 // tag 1Dcluster (eventually will produce low quality recpoint)
04366a57 690 if (cnegative[i]==0) pos[i].SetNd(100); // not available pair
691 if (cpositive[j]==0) neg[j].SetNd(100); // not available pair
692 negativepair[i*10+cnegative[i]] =j; //index
693 positivepair[j*10+cpositive[j]] =i;
694 cnegative[i]++; //counters
695 cpositive[j]++;
308b5ea4 696 fgPairs[i*nn+j]=100;
04366a57 697 }
698 }
699 }
308b5ea4 700
04366a57 701 //
702 Float_t lp[5];
703 Int_t milab[10];
704 Double_t ratio;
705
b42cfa25 706
a86176e3 707 static AliITSRecoParam *repa = NULL;
708 if(!repa){
709 repa = (AliITSRecoParam*) AliITSReconstructor::GetRecoParam();
710 if(!repa){
ed446fa3 711 repa = AliITSRecoParam::GetHighFluxParam();
a86176e3 712 AliWarning("Using default AliITSRecoParam class");
713 }
714 }
b42cfa25 715
a86176e3 716 if(repa->GetUseChargeMatchingInClusterFinderSSD()==kTRUE) {
308b5ea4 717
718
a86176e3 719 //
720 // sign gold tracks
721 //
722 for (Int_t ip=0;ip<np;ip++){
723 Float_t ybest=1000,zbest=1000,qbest=0;
724 //
725 // select gold clusters
726 if ( (cnegative[ip]==1) && cpositive[negativepair[10*ip]]==1){
727 Float_t yp=pos[ip].GetY()*fYpitchSSD;
728 Int_t j = negativepair[10*ip];
a64f9843 729
730 if( (pos[ip].GetQ()==0) && (neg[j].GetQ() ==0) ) {
731 // both bad, hence continue;
732 // mark both as used (to avoid recover at the end)
733 cused1[ip]++;
734 cused2[j]++;
735 continue;
736 }
737
a86176e3 738 ratio = (pos[ip].GetQ()-neg[j].GetQ())/(pos[ip].GetQ()+neg[j].GetQ());
a64f9843 739
740 // charge matching (note that if posQ or negQ is 0 -> ratio=1 and the following condition is met
741 if (TMath::Abs(ratio)>0.33) continue; // note: 0.33=3xsigma_ratio calculated in cosmics tests
742
a86176e3 743 //
744 Float_t yn=neg[j].GetY()*fYpitchSSD;
745 Float_t zt=(2*fHlSSD*tanp + yp - yn)/(tann+tanp);
746 Float_t yt=yn + tann*zt;
747 zt-=fHlSSD; yt-=fHwSSD;
748 ybest=yt; zbest=zt;
749 qbest=0.5*(pos[ip].GetQ()+neg[j].GetQ());
a64f9843 750 if( (pos[ip].GetQ()==0)||(neg[ip].GetQ()==0)) qbest*=2; // in case of bad strips on one side keep all charge from the other one
a86176e3 751
752 //cout<<yt<<" "<<zt<<" "<<qbest<<endl;
753
754 {
755 Double_t loc[3]={ybest,0.,zbest},trk[3]={0.,0.,0.};
756 mT2L->MasterToLocal(loc,trk);
757 lp[0]=trk[1];
758 lp[1]=trk[2];
00a7cc50 759 }
a86176e3 760 lp[2]=0.0025*0.0025; //SigmaY2
761 lp[3]=0.110*0.110; //SigmaZ2
00a7cc50 762
a86176e3 763 lp[4]=qbest; //Q
764 for (Int_t ilab=0;ilab<10;ilab++) milab[ilab]=-2;
765 for (Int_t ilab=0;ilab<3;ilab++){
766 milab[ilab] = pos[ip].GetLabel(ilab);
767 milab[ilab+3] = neg[j].GetLabel(ilab);
00a7cc50 768 }
04366a57 769 //
a86176e3 770 CheckLabels2(milab);
771 milab[3]=(((ip<<10) + j)<<10) + idet; // pos|neg|det
772 Int_t info[3] = {pos[ip].GetNd(),neg[j].GetNd(),fNlayer[fModule]};
773 AliITSRecPoint * cl2;
774
775 if(clusters){ // Note clusters != 0 when method is called for rawdata
04366a57 776
a86176e3 777
778 cl2 = new (cl[ncl]) AliITSRecPoint(milab,lp,info);
779
a86176e3 780 cl2->SetChargeRatio(ratio);
781 cl2->SetType(1);
782 fgPairs[ip*nn+j]=1;
a64f9843 783
a86176e3 784 if ((pos[ip].GetNd()+neg[j].GetNd())>6){ //multi cluster
785 cl2->SetType(2);
786 fgPairs[ip*nn+j]=2;
04366a57 787 }
a64f9843 788
789 if(pos[ip].GetQ()==0) cl2->SetType(3);
790 if(neg[ip].GetQ()==0) cl2->SetType(4);
791
a86176e3 792 cused1[ip]++;
793 cused2[j]++;
794
795 }
796 else{ // Note clusters == 0 when method is called for digits
797
798 cl2 = new AliITSRecPoint(milab,lp,info);
799
a86176e3 800 cl2->SetChargeRatio(ratio);
801 cl2->SetType(1);
802 fgPairs[ip*nn+j]=1;
a64f9843 803
a86176e3 804 if ((pos[ip].GetNd()+neg[j].GetNd())>6){ //multi cluster
805 cl2->SetType(2);
806 fgPairs[ip*nn+j]=2;
00a7cc50 807 }
a64f9843 808
809 if(pos[ip].GetQ()==0) cl2->SetType(3);
810 if(neg[ip].GetQ()==0) cl2->SetType(4);
811
a86176e3 812 cused1[ip]++;
813 cused2[j]++;
a64f9843 814
a86176e3 815 fDetTypeRec->AddRecPoint(*cl2);
816 }
817 ncl++;
818 }
819 }
820
821 for (Int_t ip=0;ip<np;ip++){
822 Float_t ybest=1000,zbest=1000,qbest=0;
823 //
824 //
825 // select "silber" cluster
826 if ( cnegative[ip]==1 && cpositive[negativepair[10*ip]]==2){
827 Int_t in = negativepair[10*ip];
828 Int_t ip2 = positivepair[10*in];
829 if (ip2==ip) ip2 = positivepair[10*in+1];
830 Float_t pcharge = pos[ip].GetQ()+pos[ip2].GetQ();
a64f9843 831
832 if ( (TMath::Abs(pcharge-neg[in].GetQ())<10) && (pcharge!=0) ) { //
833
a86176e3 834 //
835 // add first pair
a64f9843 836 if ( (fgPairs[ip*nn+in]==100)&&(pos[ip].GetQ() ) ) { //
837
a86176e3 838 Float_t yp=pos[ip].GetY()*fYpitchSSD;
839 Float_t yn=neg[in].GetY()*fYpitchSSD;
840 Float_t zt=(2*fHlSSD*tanp + yp - yn)/(tann+tanp);
841 Float_t yt=yn + tann*zt;
842 zt-=fHlSSD; yt-=fHwSSD;
843 ybest =yt; zbest=zt;
844 qbest =pos[ip].GetQ();
a64f9843 845
846 Double_t loc[3]={ybest,0.,zbest},trk[3]={0.,0.,0.};
847 mT2L->MasterToLocal(loc,trk);
848 lp[0]=trk[1];
849 lp[1]=trk[2];
850
a86176e3 851 lp[2]=0.0025*0.0025; //SigmaY2
852 lp[3]=0.110*0.110; //SigmaZ2
853
854 lp[4]=qbest; //Q
855 for (Int_t ilab=0;ilab<10;ilab++) milab[ilab]=-2;
856 for (Int_t ilab=0;ilab<3;ilab++){
857 milab[ilab] = pos[ip].GetLabel(ilab);
858 milab[ilab+3] = neg[in].GetLabel(ilab);
859 }
860 //
861 CheckLabels2(milab);
862 ratio = (pos[ip].GetQ()-neg[in].GetQ())/(pos[ip].GetQ()+neg[in].GetQ());
863 milab[3]=(((ip<<10) + in)<<10) + idet; // pos|neg|det
864 Int_t info[3] = {pos[ip].GetNd(),neg[in].GetNd(),fNlayer[fModule]};
865
866 AliITSRecPoint * cl2;
867 if(clusters){
868
869 cl2 = new (cl[ncl]) AliITSRecPoint(milab,lp,info);
870
871 // cl2-> GetGlobalXYZ(xyz); cout<<"rec "<<xyz[0]<<" "<<xyz[1]<<" "<<xyz[2]<<endl;
872
873 cl2->SetChargeRatio(ratio);
874 cl2->SetType(5);
875 fgPairs[ip*nn+in] = 5;
876 if ((pos[ip].GetNd()+neg[in].GetNd())>6){ //multi cluster
877 cl2->SetType(6);
878 fgPairs[ip*nn+in] = 6;
879 }
880 }
881 else{
882 cl2 = new AliITSRecPoint(milab,lp,info);
883 cl2->SetChargeRatio(ratio);
884 cl2->SetType(5);
885 fgPairs[ip*nn+in] = 5;
886 if ((pos[ip].GetNd()+neg[in].GetNd())>6){ //multi cluster
887 cl2->SetType(6);
888 fgPairs[ip*nn+in] = 6;
889 }
890 //cout<<"AliITSClusterFinderV2SSD "<<fModule<<" silver1"<<endl;
891
892 fDetTypeRec->AddRecPoint(*cl2);
893 }
894 ncl++;
04366a57 895 }
04366a57 896
a64f9843 897
04366a57 898 //
a86176e3 899 // add second pair
00a7cc50 900
a86176e3 901 // if (!(cused1[ip2] || cused2[in])){ //
a64f9843 902 if ( (fgPairs[ip2*nn+in]==100) && (pos[ip2].GetQ()) ) {
903
a86176e3 904 Float_t yp=pos[ip2].GetY()*fYpitchSSD;
905 Float_t yn=neg[in].GetY()*fYpitchSSD;
906 Float_t zt=(2*fHlSSD*tanp + yp - yn)/(tann+tanp);
907 Float_t yt=yn + tann*zt;
908 zt-=fHlSSD; yt-=fHwSSD;
909 ybest =yt; zbest=zt;
910 qbest =pos[ip2].GetQ();
a64f9843 911
912 Double_t loc[3]={ybest,0.,zbest},trk[3]={0.,0.,0.};
913 mT2L->MasterToLocal(loc,trk);
914 lp[0]=trk[1];
915 lp[1]=trk[2];
916
a86176e3 917 lp[2]=0.0025*0.0025; //SigmaY2
918 lp[3]=0.110*0.110; //SigmaZ2
919
920 lp[4]=qbest; //Q
921 for (Int_t ilab=0;ilab<10;ilab++) milab[ilab]=-2;
922 for (Int_t ilab=0;ilab<3;ilab++){
923 milab[ilab] = pos[ip2].GetLabel(ilab);
924 milab[ilab+3] = neg[in].GetLabel(ilab);
00a7cc50 925 }
a86176e3 926 //
927 CheckLabels2(milab);
928 ratio = (pos[ip2].GetQ()-neg[in].GetQ())/(pos[ip2].GetQ()+neg[in].GetQ());
929 milab[3]=(((ip2<<10) + in)<<10) + idet; // pos|neg|det
930 Int_t info[3] = {pos[ip2].GetNd(),neg[in].GetNd(),fNlayer[fModule]};
308b5ea4 931
a86176e3 932 AliITSRecPoint * cl2;
933 if(clusters){
934 cl2 = new (cl[ncl]) AliITSRecPoint(milab,lp,info);
935
936 // cl2-> GetGlobalXYZ(xyz); cout<<"rec "<<xyz[0]<<" "<<xyz[1]<<" "<<xyz[2]<<endl;
937
938 cl2->SetChargeRatio(ratio);
939 cl2->SetType(5);
940 fgPairs[ip2*nn+in] =5;
941 if ((pos[ip2].GetNd()+neg[in].GetNd())>6){ //multi cluster
942 cl2->SetType(6);
943 fgPairs[ip2*nn+in] =6;
944 }
945 }
946 else{
947 cl2 = new AliITSRecPoint(milab,lp,info);
948 cl2->SetChargeRatio(ratio);
949 cl2->SetType(5);
950 fgPairs[ip2*nn+in] =5;
951 if ((pos[ip2].GetNd()+neg[in].GetNd())>6){ //multi cluster
952 cl2->SetType(6);
953 fgPairs[ip2*nn+in] =6;
954 }
955
956 // cout<<"AliITSClusterFinderV2SSD "<<fModule<<" silver2"<<endl;
957 fDetTypeRec->AddRecPoint(*cl2);
958 }
959 ncl++;
a64f9843 960 }
961
a86176e3 962 cused1[ip]++;
963 cused1[ip2]++;
964 cused2[in]++;
a64f9843 965
966 } // charge matching condition
967
968 } // 2 Pside cross 1 Nside
969 } // loop over Pside clusters
a86176e3 970
a64f9843 971
972
973 //
974 for (Int_t jn=0;jn<nn;jn++){
975 if (cused2[jn]) continue;
976 Float_t ybest=1000,zbest=1000,qbest=0;
977 // select "silber" cluster
978 if ( cpositive[jn]==1 && cnegative[positivepair[10*jn]]==2){
979 Int_t ip = positivepair[10*jn];
980 Int_t jn2 = negativepair[10*ip];
981 if (jn2==jn) jn2 = negativepair[10*ip+1];
982 Float_t pcharge = neg[jn].GetQ()+neg[jn2].GetQ();
04366a57 983 //
a64f9843 984
985 if ( (TMath::Abs(pcharge-pos[ip].GetQ())<10) && // charge matching
986 (pcharge!=0) ) { // reject combinations of bad strips
987
988 //
989 // add first pair
990 // if (!(cused1[ip]||cused2[jn])){
991 if ( (fgPairs[ip*nn+jn]==100) && (neg[jn].GetQ()) ) { //
992
993 Float_t yn=neg[jn].GetY()*fYpitchSSD;
994 Float_t yp=pos[ip].GetY()*fYpitchSSD;
995 Float_t zt=(2*fHlSSD*tanp + yp - yn)/(tann+tanp);
996 Float_t yt=yn + tann*zt;
997 zt-=fHlSSD; yt-=fHwSSD;
998 ybest =yt; zbest=zt;
999 qbest =neg[jn].GetQ();
1000 {
1001 Double_t loc[3]={ybest,0.,zbest},trk[3]={0.,0.,0.};
1002 mT2L->MasterToLocal(loc,trk);
1003 lp[0]=trk[1];
1004 lp[1]=trk[2];
b4704be3 1005 }
04366a57 1006 lp[2]=0.0025*0.0025; //SigmaY2
1007 lp[3]=0.110*0.110; //SigmaZ2
1008
1009 lp[4]=qbest; //Q
1010 for (Int_t ilab=0;ilab<10;ilab++) milab[ilab]=-2;
1011 for (Int_t ilab=0;ilab<3;ilab++){
1012 milab[ilab] = pos[ip].GetLabel(ilab);
1013 milab[ilab+3] = neg[jn].GetLabel(ilab);
1014 }
1015 //
1016 CheckLabels2(milab);
1017 ratio = (pos[ip].GetQ()-neg[jn].GetQ())/(pos[ip].GetQ()+neg[jn].GetQ());
1018 milab[3]=(((ip<<10) + jn)<<10) + idet; // pos|neg|det
1019 Int_t info[3] = {pos[ip].GetNd(),neg[jn].GetNd(),fNlayer[fModule]};
1020
00a7cc50 1021 AliITSRecPoint * cl2;
1022 if(clusters){
75fb37cc 1023 cl2 = new (cl[ncl]) AliITSRecPoint(milab,lp,info);
308b5ea4 1024
1025 // cl2-> GetGlobalXYZ(xyz); cout<<"rec "<<xyz[0]<<" "<<xyz[1]<<" "<<xyz[2]<<endl;
1026
00a7cc50 1027 cl2->SetChargeRatio(ratio);
1028 cl2->SetType(7);
308b5ea4 1029 fgPairs[ip*nn+jn] =7;
00a7cc50 1030 if ((pos[ip].GetNd()+neg[jn].GetNd())>6){ //multi cluster
1031 cl2->SetType(8);
308b5ea4 1032 fgPairs[ip*nn+jn]=8;
00a7cc50 1033 }
1034
1035 }
04366a57 1036 else{
75fb37cc 1037 cl2 = new AliITSRecPoint(milab,lp,info);
00a7cc50 1038 cl2->SetChargeRatio(ratio);
1039 cl2->SetType(7);
308b5ea4 1040 fgPairs[ip*nn+jn] =7;
00a7cc50 1041 if ((pos[ip].GetNd()+neg[jn].GetNd())>6){ //multi cluster
1042 cl2->SetType(8);
308b5ea4 1043 fgPairs[ip*nn+jn]=8;
00a7cc50 1044 }
308b5ea4 1045 //cout<<"AliITSClusterFinderV2SSD "<<fModule<<" silverN1"<<endl;
00a7cc50 1046
1047 fDetTypeRec->AddRecPoint(*cl2);
04366a57 1048 }
1049 ncl++;
04366a57 1050 }
1051 //
1052 // add second pair
1053 // if (!(cused1[ip]||cused2[jn2])){
a64f9843 1054 if ( (fgPairs[ip*nn+jn2]==100)&&(neg[jn2].GetQ() ) ) { //
1055
04366a57 1056 Float_t yn=neg[jn2].GetY()*fYpitchSSD;
1057 Double_t yp=pos[ip].GetY()*fYpitchSSD;
1058 Double_t zt=(2*fHlSSD*tanp + yp - yn)/(tann+tanp);
1059 Double_t yt=yn + tann*zt;
1060 zt-=fHlSSD; yt-=fHwSSD;
1061 ybest =yt; zbest=zt;
1062 qbest =neg[jn2].GetQ();
b4704be3 1063 {
1064 Double_t loc[3]={ybest,0.,zbest},trk[3]={0.,0.,0.};
1065 mT2L->MasterToLocal(loc,trk);
1066 lp[0]=trk[1];
1067 lp[1]=trk[2];
1068 }
04366a57 1069 lp[2]=0.0025*0.0025; //SigmaY2
1070 lp[3]=0.110*0.110; //SigmaZ2
1071
1072 lp[4]=qbest; //Q
1073 for (Int_t ilab=0;ilab<10;ilab++) milab[ilab]=-2;
1074 for (Int_t ilab=0;ilab<3;ilab++){
1075 milab[ilab] = pos[ip].GetLabel(ilab);
1076 milab[ilab+3] = neg[jn2].GetLabel(ilab);
1077 }
1078 //
1079 CheckLabels2(milab);
1080 ratio = (pos[ip].GetQ()-neg[jn2].GetQ())/(pos[ip].GetQ()+neg[jn2].GetQ());
1081 milab[3]=(((ip<<10) + jn2)<<10) + idet; // pos|neg|det
1082 Int_t info[3] = {pos[ip].GetNd(),neg[jn2].GetNd(),fNlayer[fModule]};
00a7cc50 1083 AliITSRecPoint * cl2;
1084 if(clusters){
75fb37cc 1085 cl2 = new (cl[ncl]) AliITSRecPoint(milab,lp,info);
308b5ea4 1086
1087 // cl2-> GetGlobalXYZ(xyz); cout<<"rec "<<xyz[0]<<" "<<xyz[1]<<" "<<xyz[2]<<endl;
1088
00a7cc50 1089 cl2->SetChargeRatio(ratio);
308b5ea4 1090 fgPairs[ip*nn+jn2]=7;
00a7cc50 1091 cl2->SetType(7);
1092 if ((pos[ip].GetNd()+neg[jn2].GetNd())>6){ //multi cluster
1093 cl2->SetType(8);
308b5ea4 1094 fgPairs[ip*nn+jn2]=8;
00a7cc50 1095 }
1096
1097 }
04366a57 1098 else{
75fb37cc 1099 cl2 = new AliITSRecPoint(milab,lp,info);
00a7cc50 1100 cl2->SetChargeRatio(ratio);
308b5ea4 1101 fgPairs[ip*nn+jn2]=7;
00a7cc50 1102 cl2->SetType(7);
1103 if ((pos[ip].GetNd()+neg[jn2].GetNd())>6){ //multi cluster
1104 cl2->SetType(8);
308b5ea4 1105 fgPairs[ip*nn+jn2]=8;
00a7cc50 1106 }
308b5ea4 1107 //cout<<"AliITSClusterFinderV2SSD "<<fModule<<" silverN2"<<endl;
1108
00a7cc50 1109 fDetTypeRec->AddRecPoint(*cl2);
04366a57 1110 }
1111
1112 ncl++;
04366a57 1113 }
1114 cused1[ip]++;
1115 cused2[jn]++;
1116 cused2[jn2]++;
308b5ea4 1117
a64f9843 1118 } // charge matching condition
1119
1120 } // 2 Nside cross 1 Pside
1121 } // loop over Pside clusters
1122
1123
1124
1125 for (Int_t ip=0;ip<np;ip++){
1126 Float_t ybest=1000,zbest=1000,qbest=0;
04366a57 1127 //
a64f9843 1128 // 2x2 clusters
04366a57 1129 //
a64f9843 1130 if ( (cnegative[ip]<5) && cpositive[negativepair[10*ip]]<5){
1131 Float_t minchargediff =4.;
1132 Int_t j=-1;
1133 for (Int_t di=0;di<cnegative[ip];di++){
1134 Int_t jc = negativepair[ip*10+di];
1135 Float_t chargedif = pos[ip].GetQ()-neg[jc].GetQ();
1136 if (TMath::Abs(chargedif)<minchargediff){
1137 j =jc;
1138 minchargediff = TMath::Abs(chargedif);
1139 }
00a7cc50 1140 }
a64f9843 1141 if (j<0) continue; // not proper cluster
1142
1143 Int_t count =0;
1144 for (Int_t di=0;di<cnegative[ip];di++){
1145 Int_t jc = negativepair[ip*10+di];
1146 Float_t chargedif = pos[ip].GetQ()-neg[jc].GetQ();
1147 if (TMath::Abs(chargedif)<minchargediff+3.) count++;
00a7cc50 1148 }
a64f9843 1149 if (count>1) continue; // more than one "proper" cluster for positive
1150 //
00a7cc50 1151
a64f9843 1152 count =0;
1153 for (Int_t dj=0;dj<cpositive[j];dj++){
1154 Int_t ic = positivepair[j*10+dj];
1155 Float_t chargedif = pos[ic].GetQ()-neg[j].GetQ();
1156 if (TMath::Abs(chargedif)<minchargediff+3.) count++;
1157 }
1158 if (count>1) continue; // more than one "proper" cluster for negative
1159
1160 Int_t jp = 0;
1161
1162 count =0;
1163 for (Int_t dj=0;dj<cnegative[jp];dj++){
1164 Int_t ic = positivepair[jp*10+dj];
1165 Float_t chargedif = pos[ic].GetQ()-neg[jp].GetQ();
1166 if (TMath::Abs(chargedif)<minchargediff+4.) count++;
1167 }
1168 if (count>1) continue;
1169 if (fgPairs[ip*nn+j]<100) continue;
1170 //
1171
1172 //almost gold clusters
1173 Float_t yp=pos[ip].GetY()*fYpitchSSD;
1174 Float_t yn=neg[j].GetY()*fYpitchSSD;
1175 Float_t zt=(2*fHlSSD*tanp + yp - yn)/(tann+tanp);
1176 Float_t yt=yn + tann*zt;
1177 zt-=fHlSSD; yt-=fHwSSD;
1178 ybest=yt; zbest=zt;
1179 qbest=0.5*(pos[ip].GetQ()+neg[j].GetQ());
1180 {
1181 Double_t loc[3]={ybest,0.,zbest},trk[3]={0.,0.,0.};
1182 mT2L->MasterToLocal(loc,trk);
1183 lp[0]=trk[1];
1184 lp[1]=trk[2];
1185 }
1186 lp[2]=0.0025*0.0025; //SigmaY2
1187 lp[3]=0.110*0.110; //SigmaZ2
1188 lp[4]=qbest; //Q
1189 for (Int_t ilab=0;ilab<10;ilab++) milab[ilab]=-2;
1190 for (Int_t ilab=0;ilab<3;ilab++){
1191 milab[ilab] = pos[ip].GetLabel(ilab);
1192 milab[ilab+3] = neg[j].GetLabel(ilab);
1193 }
1194 //
1195 CheckLabels2(milab);
1196 ratio = (pos[ip].GetQ()-neg[j].GetQ())/(pos[ip].GetQ()+neg[j].GetQ());
1197 milab[3]=(((ip<<10) + j)<<10) + idet; // pos|neg|det
1198 Int_t info[3] = {pos[ip].GetNd(),neg[j].GetNd(),fNlayer[fModule]};
1199 AliITSRecPoint * cl2;
1200 if(clusters){
1201 cl2 = new (cl[ncl]) AliITSRecPoint(milab,lp,info);
1202
1203 // cl2-> GetGlobalXYZ(xyz); cout<<"rec "<<xyz[0]<<" "<<xyz[1]<<" "<<xyz[2]<<endl;
1204
1205 cl2->SetChargeRatio(ratio);
1206 cl2->SetType(10);
1207 fgPairs[ip*nn+j]=10;
1208 if ((pos[ip].GetNd()+neg[j].GetNd())>6){ //multi cluster
1209 cl2->SetType(11);
1210 fgPairs[ip*nn+j]=11;
1211 }
1212 cused1[ip]++;
1213 cused2[j]++;
1214 }
1215 else{
1216 cl2 = new AliITSRecPoint(milab,lp,info);
1217 cl2->SetChargeRatio(ratio);
1218 cl2->SetType(10);
1219 fgPairs[ip*nn+j]=10;
1220 if ((pos[ip].GetNd()+neg[j].GetNd())>6){ //multi cluster
1221 cl2->SetType(11);
1222 fgPairs[ip*nn+j]=11;
1223 }
1224 cused1[ip]++;
1225 cused2[j]++;
1226
1227 //cout<<"AliITSClusterFinderV2SSD "<<fModule<<" 2x2"<<endl;
1228
1229 fDetTypeRec->AddRecPoint(*cl2);
1230 }
1231 ncl++;
1232
1233 } // manyXmany
1234 } // loop over Pside 1Dclusters
1235
1236
1237 } // use charge matching
1238
04366a57 1239
a64f9843 1240 // recover all the other crosses
04366a57 1241 //
1242 for (Int_t i=0; i<np; i++) {
1243 Float_t ybest=1000,zbest=1000,qbest=0;
1244 Float_t yp=pos[i].GetY()*fYpitchSSD;
a64f9843 1245 if ((pos[i].GetQ()>0)&&(pos[i].GetQ()<3)) continue;
04366a57 1246 for (Int_t j=0; j<nn; j++) {
1247 // for (Int_t di = 0;di<cpositive[i];di++){
1248 // Int_t j = negativepair[10*i+di];
a64f9843 1249 if ((neg[j].GetQ()>0)&&(neg[j].GetQ()<3)) continue;
1250
1251 if ((neg[j].GetQ()==0)&&(pos[i].GetQ()==0)) continue; // reject crosses of bad strips!!
1252
04366a57 1253 if (cused2[j]||cused1[i]) continue;
308b5ea4 1254 if (fgPairs[i*nn+j]>0 &&fgPairs[i*nn+j]<100) continue;
04366a57 1255 ratio = (pos[i].GetQ()-neg[j].GetQ())/(pos[i].GetQ()+neg[j].GetQ());
1256 Float_t yn=neg[j].GetY()*fYpitchSSD;
1257 Float_t zt=(2*fHlSSD*tanp + yp - yn)/(tann+tanp);
1258 Float_t yt=yn + tann*zt;
1259 zt-=fHlSSD; yt-=fHwSSD;
1260 if (TMath::Abs(yt)<fHwSSD+0.01)
1261 if (TMath::Abs(zt)<fHlSSD+0.01*(neg[j].GetNd()+pos[i].GetNd())) {
1262 ybest=yt; zbest=zt;
1263 qbest=0.5*(pos[i].GetQ()+neg[j].GetQ());
b4704be3 1264 {
1265 Double_t loc[3]={ybest,0.,zbest},trk[3]={0.,0.,0.};
1266 mT2L->MasterToLocal(loc,trk);
1267 lp[0]=trk[1];
1268 lp[1]=trk[2];
1269 }
04366a57 1270 lp[2]=0.0025*0.0025; //SigmaY2
1271 lp[3]=0.110*0.110; //SigmaZ2
1272
1273 lp[4]=qbest; //Q
1274 for (Int_t ilab=0;ilab<10;ilab++) milab[ilab]=-2;
1275 for (Int_t ilab=0;ilab<3;ilab++){
1276 milab[ilab] = pos[i].GetLabel(ilab);
1277 milab[ilab+3] = neg[j].GetLabel(ilab);
1278 }
1279 //
1280 CheckLabels2(milab);
1281 milab[3]=(((i<<10) + j)<<10) + idet; // pos|neg|det
1282 Int_t info[3] = {pos[i].GetNd(),neg[j].GetNd(),fNlayer[fModule]};
00a7cc50 1283 AliITSRecPoint * cl2;
1284 if(clusters){
75fb37cc 1285 cl2 = new (cl[ncl]) AliITSRecPoint(milab,lp,info);
308b5ea4 1286
00a7cc50 1287 cl2->SetChargeRatio(ratio);
1288 cl2->SetType(100+cpositive[j]+cnegative[i]);
a64f9843 1289
1290 if(pos[i].GetQ()==0) cl2->SetType(200+cpositive[j]+cnegative[i]);
1291 if(neg[j].GetQ()==0) cl2->SetType(300+cpositive[j]+cnegative[i]);
1292
00a7cc50 1293 }
04366a57 1294 else{
75fb37cc 1295 cl2 = new AliITSRecPoint(milab,lp,info);
00a7cc50 1296 cl2->SetChargeRatio(ratio);
1297 cl2->SetType(100+cpositive[j]+cnegative[i]);
308b5ea4 1298
a64f9843 1299 if(pos[i].GetQ()==0) cl2->SetType(200+cpositive[j]+cnegative[i]);
1300 if(neg[j].GetQ()==0) cl2->SetType(300+cpositive[j]+cnegative[i]);
308b5ea4 1301
00a7cc50 1302 fDetTypeRec->AddRecPoint(*cl2);
04366a57 1303 }
1304 ncl++;
04366a57 1305 }
1306 }
1307 }
1308
04366a57 1309}
1310
a64f9843 1311