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b0f5e3fc 1/**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
d86f531c 15/*
16 $Id$
d86f531c 17 */
04366a57 18///////////////////////////////////////////////////////////////////////////
19// Cluster finder //
20// for Silicon //
21// Drift Detector //
22//////////////////////////////////////////////////////////////////////////
bf3f2830 23
b0f5e3fc 24
25#include "AliITSClusterFinderSDD.h"
e8189707 26#include "AliITSMapA1.h"
41b19549 27#include "AliITSRawClusterSDD.h"
78a228db 28#include "AliITSRecPoint.h"
f77f13c8 29#include "AliITSdigitSDD.h"
7d62fb64 30#include "AliITSDetTypeRec.h"
fcf95fc7 31#include "AliITSCalibrationSDD.h"
f77f13c8 32#include "AliITSsegmentationSDD.h"
6cae184e 33#include "AliITSgeom.h"
f77f13c8 34#include "AliLog.h"
b0f5e3fc 35
b0f5e3fc 36ClassImp(AliITSClusterFinderSDD)
37
aacedc3e 38//______________________________________________________________________
39AliITSClusterFinderSDD::AliITSClusterFinderSDD():
40AliITSClusterFinder(),
41fNclusters(0),
42fDAnode(0.0),
43fDTime(0.0),
44fTimeCorr(0.0),
45fCutAmplitude(0),
46fMinPeak(0),
47fMinCharge(0),
48fMinNCells(0),
49fMaxNCells(0){
50 // default constructor
51}
42da2935 52//______________________________________________________________________
8ba39da9 53AliITSClusterFinderSDD::AliITSClusterFinderSDD(AliITSDetTypeRec* dettyp,
50d05d7b 54 TClonesArray *digits,
aacedc3e 55 TClonesArray *recp):
8ba39da9 56AliITSClusterFinder(dettyp),
aacedc3e 57fNclusters(0),
58fDAnode(0.0),
59fDTime(0.0),
60fTimeCorr(0.0),
61fCutAmplitude(0),
62fMinPeak(0),
63fMinCharge(0),
64fMinNCells(0),
65fMaxNCells(0){
42da2935 66 // standard constructor
78a228db 67
aacedc3e 68 SetDigits(digits);
69 SetClusters(recp);
8ba39da9 70 SetCutAmplitude(fDetTypeRec->GetITSgeom()->GetStartSDD());
b0f5e3fc 71 SetDAnode();
72 SetDTime();
f45f6658 73 SetMinPeak((Int_t)((AliITSCalibrationSDD*)GetResp(fDetTypeRec->GetITSgeom()->GetStartSDD()))->GetNoiseAfterElectronics(0)*5);
78a228db 74 SetMinNCells();
75 SetMaxNCells();
76 SetTimeCorr();
a1f090e0 77 SetMinCharge();
aacedc3e 78 SetMap(new AliITSMapA1(GetSeg(),Digits(),fCutAmplitude));
e8189707 79}
42da2935 80//______________________________________________________________________
8ba39da9 81void AliITSClusterFinderSDD::SetCutAmplitude(Int_t mod,Double_t nsigma){
42da2935 82 // set the signal threshold for cluster finder
f45f6658 83 Double_t baseline,noiseAfterEl;
42da2935 84
0599a018 85 AliITSresponseSDD* res = (AliITSresponseSDD*)((AliITSCalibrationSDD*)GetResp(mod))->GetResponse();
86 const char *option=res->ZeroSuppOption();
f45f6658 87 Int_t nanodes = GetResp(mod)->Wings()*GetResp(mod)->Channels()*GetResp(mod)->Chips();
88 fCutAmplitude.Set(nanodes);
89 for(Int_t ian=0;ian<nanodes;ian++){
f45f6658 90 noiseAfterEl = ((AliITSCalibrationSDD*)GetResp(mod))->GetNoiseAfterElectronics(ian);
20f3f947 91 if(strstr(option,"ZS")){
0599a018 92 fCutAmplitude[ian] = (Int_t)(nsigma*noiseAfterEl);
93 }
94 else{
95 baseline=GetResp(mod)->GetBaseline(ian);
96 fCutAmplitude[ian] = (Int_t)((baseline + nsigma*noiseAfterEl));
97 }
f45f6658 98 }
5dd4cc39 99}
42da2935 100//______________________________________________________________________
101void AliITSClusterFinderSDD::Find1DClusters(){
102 // find 1D clusters
a1f090e0 103
42da2935 104 // retrieve the parameters
aacedc3e 105 Int_t fNofMaps = GetSeg()->Npz();
106 Int_t fMaxNofSamples = GetSeg()->Npx();
b48af428 107 Int_t fNofAnodes = fNofMaps/2;
108 Int_t dummy = 0;
aacedc3e 109 Double_t fTimeStep = GetSeg()->Dpx(dummy);
110 Double_t fSddLength = GetSeg()->Dx();
404c1c29 111 AliITSCalibrationSDD* cal = (AliITSCalibrationSDD*)GetResp(fModule);
0599a018 112 AliITSresponseSDD* res = (AliITSresponseSDD*)((AliITSCalibrationSDD*)GetResp(fModule))->GetResponse();
113 const char *option=res->ZeroSuppOption();
114
42da2935 115 // map the signal
aacedc3e 116 Map()->ClearMap();
f45f6658 117 Map()->SetThresholdArr(fCutAmplitude);
118 Map()->FillMap2();
a1f090e0 119
42da2935 120 Int_t nofFoundClusters = 0;
121 Int_t i;
aacedc3e 122 Double_t **dfadc = new Double_t*[fNofAnodes];
123 for(i=0;i<fNofAnodes;i++) dfadc[i] = new Double_t[fMaxNofSamples];
124 Double_t fadc = 0.;
125 Double_t fadc1 = 0.;
126 Double_t fadc2 = 0.;
42da2935 127 Int_t j,k,idx,l,m;
128 for(j=0;j<2;j++) {
50d05d7b 129 for(k=0;k<fNofAnodes;k++) {
130 idx = j*fNofAnodes+k;
131 // signal (fadc) & derivative (dfadc)
132 dfadc[k][255]=0.;
133 for(l=0; l<fMaxNofSamples; l++) {
aacedc3e 134 fadc2=(Double_t)Map()->GetSignal(idx,l);
135 if(l>0) fadc1=(Double_t)Map()->GetSignal(idx,l-1);
50d05d7b 136 if(l>0) dfadc[k][l-1] = fadc2-fadc1;
137 } // samples
138 } // anodes
42da2935 139
50d05d7b 140 for(k=0;k<fNofAnodes;k++) {
f77f13c8 141 AliDebug(5,Form("Anode: %d, Wing: %d",k+1,j+1));
50d05d7b 142 idx = j*fNofAnodes+k;
143 Int_t imax = 0;
144 Int_t imaxd = 0;
145 Int_t it = 0;
146 while(it <= fMaxNofSamples-3) {
147 imax = it;
148 imaxd = it;
149 // maximum of signal
aacedc3e 150 Double_t fadcmax = 0.;
151 Double_t dfadcmax = 0.;
50d05d7b 152 Int_t lthrmina = 1;
153 Int_t lthrmint = 3;
154 Int_t lthra = 1;
155 Int_t lthrt = 0;
156 for(m=0;m<20;m++) {
157 Int_t id = it+m;
158 if(id>=fMaxNofSamples) break;
aacedc3e 159 fadc=(float)Map()->GetSignal(idx,id);
50d05d7b 160 if(fadc > fadcmax) { fadcmax = fadc; imax = id;}
f45f6658 161 if(fadc > (float)fCutAmplitude[idx])lthrt++;
50d05d7b 162 if(dfadc[k][id] > dfadcmax) {
163 dfadcmax = dfadc[k][id];
164 imaxd = id;
165 } // end if
166 } // end for m
167 it = imaxd;
aacedc3e 168 if(Map()->TestHit(idx,imax) == kEmpty) {it++; continue;}
50d05d7b 169 // cluster charge
170 Int_t tstart = it-2;
171 if(tstart < 0) tstart = 0;
172 Bool_t ilcl = 0;
173 if(lthrt >= lthrmint && lthra >= lthrmina) ilcl = 1;
174 if(ilcl) {
175 nofFoundClusters++;
176 Int_t tstop = tstart;
aacedc3e 177 Double_t dfadcmin = 10000.;
50d05d7b 178 Int_t ij;
179 for(ij=0; ij<20; ij++) {
180 if(tstart+ij > 255) { tstop = 255; break; }
aacedc3e 181 fadc=(float)Map()->GetSignal(idx,tstart+ij);
50d05d7b 182 if((dfadc[k][tstart+ij] < dfadcmin) &&
f45f6658 183 (fadc > fCutAmplitude[idx])) {
50d05d7b 184 tstop = tstart+ij+5;
185 if(tstop > 255) tstop = 255;
186 dfadcmin = dfadc[k][it+ij];
187 } // end if
188 } // end for ij
42da2935 189
aacedc3e 190 Double_t clusterCharge = 0.;
191 Double_t clusterAnode = k+0.5;
192 Double_t clusterTime = 0.;
50d05d7b 193 Int_t clusterMult = 0;
aacedc3e 194 Double_t clusterPeakAmplitude = 0.;
50d05d7b 195 Int_t its,peakpos = -1;
0599a018 196
f45f6658 197 for(its=tstart; its<=tstop; its++) {
aacedc3e 198 fadc=(float)Map()->GetSignal(idx,its);
20f3f947 199 if(!(strstr(option,"ZS"))){
0599a018 200 Double_t baseline=GetResp(fModule)->GetBaseline(idx);
201 if(fadc>baseline) fadc -= baseline;
202 else fadc = 0.;
203 }
50d05d7b 204 clusterCharge += fadc;
205 // as a matter of fact we should take the peak
206 // pos before FFT
207 // to get the list of tracks !!!
208 if(fadc > clusterPeakAmplitude) {
209 clusterPeakAmplitude = fadc;
aacedc3e 210 //peakpos=Map()->GetHitIndex(idx,its);
50d05d7b 211 Int_t shift = (int)(fTimeCorr/fTimeStep);
212 if(its>shift && its<(fMaxNofSamples-shift))
aacedc3e 213 peakpos = Map()->GetHitIndex(idx,its+shift);
214 else peakpos = Map()->GetHitIndex(idx,its);
215 if(peakpos<0) peakpos =Map()->GetHitIndex(idx,its);
50d05d7b 216 } // end if
217 clusterTime += fadc*its;
218 if(fadc > 0) clusterMult++;
219 if(its == tstop) {
220 clusterTime /= (clusterCharge/fTimeStep); // ns
221 if(clusterTime>fTimeCorr) clusterTime -=fTimeCorr;
222 //ns
223 } // end if
224 } // end for its
f6b6d58e 225 Float_t theAnode=clusterAnode+j*fNofAnodes;
226 Double_t clusteranodePath = GetSeg()->GetLocalZFromAnode(theAnode);
404c1c29 227 Double_t clusterDriftPath = (Double_t)cal->GetDriftPath(clusterTime,clusteranodePath);
50d05d7b 228 clusterDriftPath = fSddLength-clusterDriftPath;
229 if(clusterCharge <= 0.) break;
230 AliITSRawClusterSDD clust(j+1,//i
231 clusterAnode,clusterTime,//ff
232 clusterCharge, //f
233 clusterPeakAmplitude, //f
234 peakpos, //i
235 0.,0.,clusterDriftPath,//fff
236 clusteranodePath, //f
237 clusterMult, //i
238 0,0,0,0,0,0,0);//7*i
7d62fb64 239 fDetTypeRec->AddCluster(1,&clust);
50d05d7b 240 it = tstop;
241 } // ilcl
242 it++;
243 } // while (samples)
244 } // anodes
42da2935 245 } // detectors (2)
42da2935 246
247 for(i=0;i<fNofAnodes;i++) delete[] dfadc[i];
248 delete [] dfadc;
a1f090e0 249
42da2935 250 return;
a1f090e0 251}
42da2935 252//______________________________________________________________________
253void AliITSClusterFinderSDD::Find1DClustersE(){
24a1c341 254 // find 1D clusters
42da2935 255 // retrieve the parameters
aacedc3e 256 Int_t fNofMaps = GetSeg()->Npz();
257 Int_t fMaxNofSamples = GetSeg()->Npx();
42da2935 258 Int_t fNofAnodes = fNofMaps/2;
259 Int_t dummy=0;
aacedc3e 260 Double_t fTimeStep = GetSeg()->Dpx( dummy );
261 Double_t fSddLength = GetSeg()->Dx();
404c1c29 262 AliITSCalibrationSDD* cal = (AliITSCalibrationSDD*)GetResp(fModule);
aacedc3e 263 Map()->ClearMap();
f45f6658 264 Map()->SetThresholdArr( fCutAmplitude );
265 Map()->FillMap2();
fcf95fc7 266
0599a018 267 AliITSresponseSDD* res = (AliITSresponseSDD*)cal->GetResponse();
268 const char *option=res->ZeroSuppOption();
269
42da2935 270 Int_t nClu = 0;
50d05d7b 271 // cout << "Search cluster... "<< endl;
42da2935 272 for( Int_t j=0; j<2; j++ ){
50d05d7b 273 for( Int_t k=0; k<fNofAnodes; k++ ){
0599a018 274 Int_t idx = j*fNofAnodes+k;
50d05d7b 275 Bool_t on = kFALSE;
276 Int_t start = 0;
277 Int_t nTsteps = 0;
aacedc3e 278 Double_t fmax = 0.;
50d05d7b 279 Int_t lmax = 0;
aacedc3e 280 Double_t charge = 0.;
281 Double_t time = 0.;
282 Double_t anode = k+0.5;
50d05d7b 283 Int_t peakpos = -1;
284 for( Int_t l=0; l<fMaxNofSamples; l++ ){
aacedc3e 285 Double_t fadc = (Double_t)Map()->GetSignal( idx, l );
50d05d7b 286 if( fadc > 0.0 ){
287 if( on == kFALSE && l<fMaxNofSamples-4){
288 // star RawCluster (reset var.)
aacedc3e 289 Double_t fadc1 = (Double_t)Map()->GetSignal( idx, l+1 );
50d05d7b 290 if( fadc1 < fadc ) continue;
291 start = l;
292 fmax = 0.;
293 lmax = 0;
294 time = 0.;
295 charge = 0.;
296 on = kTRUE;
297 nTsteps = 0;
298 } // end if on...
299 nTsteps++ ;
20f3f947 300 if(!(strstr(option,"ZS"))){
0599a018 301 Double_t baseline=GetResp(fModule)->GetBaseline(idx);
302 if( fadc > baseline ) fadc -= baseline;
303 else fadc=0.;
304 }
50d05d7b 305 charge += fadc;
306 time += fadc*l;
307 if( fadc > fmax ){
308 fmax = fadc;
309 lmax = l;
310 Int_t shift = (Int_t)(fTimeCorr/fTimeStep + 0.5);
311 if( l > shift && l < (fMaxNofSamples-shift) )
aacedc3e 312 peakpos = Map()->GetHitIndex( idx, l+shift );
50d05d7b 313 else
aacedc3e 314 peakpos = Map()->GetHitIndex( idx, l );
315 if( peakpos < 0) peakpos = Map()->GetHitIndex(idx,l);
50d05d7b 316 } // end if fadc
317 }else{ // end fadc>0
318 if( on == kTRUE ){
319 if( nTsteps > 2 ){
320 // min # of timesteps for a RawCluster
321 // Found a RawCluster...
322 Int_t stop = l-1;
323 time /= (charge/fTimeStep); // ns
324 // time = lmax*fTimeStep; // ns
325 if( time > fTimeCorr ) time -= fTimeCorr; // ns
f6b6d58e 326 Float_t theAnode=anode+j*fNofAnodes;
327 Double_t anodePath =GetSeg()->GetLocalZFromAnode(theAnode);
4952f440 328 Double_t driftPath = (Double_t)cal->GetDriftPath(time,anode);
50d05d7b 329 driftPath = fSddLength-driftPath;
330 AliITSRawClusterSDD clust(j+1,anode,time,charge,
331 fmax, peakpos,0.,0.,
332 driftPath,anodePath,
333 nTsteps,start,stop,
334 start, stop, 1, k, k );
7d62fb64 335 fDetTypeRec->AddCluster( 1, &clust );
f77f13c8 336 if(AliDebugLevel()>=5) clust.PrintInfo();
50d05d7b 337 nClu++;
338 } // end if nTsteps
339 on = kFALSE;
340 } // end if on==kTRUE
341 } // end if fadc>0
342 } // samples
343 } // anodes
42da2935 344 } // wings
f77f13c8 345 AliDebug(3,Form("# Rawclusters %d",nClu));
42da2935 346 return;
a1f090e0 347}
42da2935 348//_______________________________________________________________________
aacedc3e 349Int_t AliITSClusterFinderSDD::SearchPeak(Double_t *spect,Int_t xdim,Int_t zdim,
50d05d7b 350 Int_t *peakX, Int_t *peakZ,
aacedc3e 351 Double_t *peakAmp, Double_t minpeak ){
42da2935 352 // search peaks on a 2D cluster
353 Int_t npeak = 0; // # peaks
56fff130 354 Int_t i,j;
42da2935 355 // search peaks
356 for( Int_t z=1; z<zdim-1; z++ ){
48058160 357 for( Int_t x=1; x<xdim-2; x++ ){
aacedc3e 358 Double_t sxz = spect[x*zdim+z];
359 Double_t sxz1 = spect[(x+1)*zdim+z];
360 Double_t sxz2 = spect[(x-1)*zdim+z];
50d05d7b 361 // search a local max. in s[x,z]
362 if( sxz < minpeak || sxz1 <= 0 || sxz2 <= 0 ) continue;
363 if( sxz >= spect[(x+1)*zdim+z ] && sxz >= spect[(x-1)*zdim+z ] &&
364 sxz >= spect[x*zdim +z+1] && sxz >= spect[x*zdim +z-1] &&
365 sxz >= spect[(x+1)*zdim+z+1] && sxz >= spect[(x+1)*zdim+z-1] &&
366 sxz >= spect[(x-1)*zdim+z+1] && sxz >= spect[(x-1)*zdim+z-1] ){
367 // peak found
368 peakX[npeak] = x;
369 peakZ[npeak] = z;
370 peakAmp[npeak] = sxz;
371 npeak++;
372 } // end if ....
373 } // end for x
42da2935 374 } // end for z
375 // search groups of peaks with same amplitude.
376 Int_t *flag = new Int_t[npeak];
377 for( i=0; i<npeak; i++ ) flag[i] = 0;
378 for( i=0; i<npeak; i++ ){
50d05d7b 379 for( j=0; j<npeak; j++ ){
380 if( i==j) continue;
381 if( flag[j] > 0 ) continue;
382 if( peakAmp[i] == peakAmp[j] &&
383 TMath::Abs(peakX[i]-peakX[j])<=1 &&
384 TMath::Abs(peakZ[i]-peakZ[j])<=1 ){
385 if( flag[i] == 0) flag[i] = i+1;
386 flag[j] = flag[i];
387 } // end if ...
388 } // end for j
42da2935 389 } // end for i
50d05d7b 390 // make average of peak groups
42da2935 391 for( i=0; i<npeak; i++ ){
50d05d7b 392 Int_t nFlag = 1;
393 if( flag[i] <= 0 ) continue;
394 for( j=0; j<npeak; j++ ){
395 if( i==j ) continue;
396 if( flag[j] != flag[i] ) continue;
397 peakX[i] += peakX[j];
398 peakZ[i] += peakZ[j];
399 nFlag++;
400 npeak--;
401 for( Int_t k=j; k<npeak; k++ ){
402 peakX[k] = peakX[k+1];
403 peakZ[k] = peakZ[k+1];
404 peakAmp[k] = peakAmp[k+1];
405 flag[k] = flag[k+1];
406 } // end for k
407 j--;
408 } // end for j
409 if( nFlag > 1 ){
410 peakX[i] /= nFlag;
411 peakZ[i] /= nFlag;
412 } // end fi nFlag
42da2935 413 } // end for i
414 delete [] flag;
415 return( npeak );
a1f090e0 416}
42da2935 417//______________________________________________________________________
aacedc3e 418void AliITSClusterFinderSDD::PeakFunc( Int_t xdim, Int_t zdim, Double_t *par,
419 Double_t *spe, Double_t *integral){
24a1c341 420 // function used to fit the clusters
50d05d7b 421 // par -> parameters..
24a1c341 422 // par[0] number of peaks.
423 // for each peak i=1, ..., par[0]
50d05d7b 424 // par[i] = Ampl.
425 // par[i+1] = xpos
426 // par[i+2] = zpos
427 // par[i+3] = tau
428 // par[i+4] = sigma.
fcf95fc7 429 Int_t electronics = GetResp(fModule)->GetElectronics(); // 1 = PASCAL, 2 = OLA
24a1c341 430 const Int_t knParam = 5;
431 Int_t npeak = (Int_t)par[0];
42da2935 432
aacedc3e 433 memset( spe, 0, sizeof( Double_t )*zdim*xdim );
42da2935 434
24a1c341 435 Int_t k = 1;
42da2935 436 for( Int_t i=0; i<npeak; i++ ){
24a1c341 437 if( integral != 0 ) integral[i] = 0.;
aacedc3e 438 Double_t sigmaA2 = par[k+4]*par[k+4]*2.;
439 Double_t t2 = par[k+3]; // PASCAL
bf3f2830 440 if( electronics == 2 ) { t2 *= t2; t2 *= 2; } // OLA
42da2935 441 for( Int_t z=0; z<zdim; z++ ){
442 for( Int_t x=0; x<xdim; x++ ){
aacedc3e 443 Double_t z2 = (z-par[k+2])*(z-par[k+2])/sigmaA2;
444 Double_t x2 = 0.;
445 Double_t signal = 0.;
42da2935 446 if( electronics == 1 ){ // PASCAL
bf3f2830 447 x2 = (x-par[k+1]+t2)/t2;
42da2935 448 signal = (x2>0.) ? par[k]*x2*exp(-x2+1.-z2) :0.0; // RCCR2
449 // signal =(x2>0.) ? par[k]*x2*x2*exp(-2*x2+2.-z2 ):0.0;//RCCR
450 }else if( electronics == 2 ) { // OLA
bf3f2830 451 x2 = (x-par[k+1])*(x-par[k+1])/t2;
50d05d7b 452 signal = par[k] * exp( -x2 - z2 );
453 } else {
aacedc3e 454 Warning("PeakFunc","Wrong SDD Electronics = %d",
455 electronics);
50d05d7b 456 // exit( 1 );
457 } // end if electronicx
24a1c341 458 spe[x*zdim+z] += signal;
459 if( integral != 0 ) integral[i] += signal;
42da2935 460 } // end for x
461 } // end for z
24a1c341 462 k += knParam;
42da2935 463 } // end for i
24a1c341 464 return;
a1f090e0 465}
42da2935 466//__________________________________________________________________________
aacedc3e 467Double_t AliITSClusterFinderSDD::ChiSqr( Int_t xdim, Int_t zdim, Double_t *spe,
468 Double_t *speFit ) const{
42da2935 469 // EVALUATES UNNORMALIZED CHI-SQUARED
aacedc3e 470 Double_t chi2 = 0.;
42da2935 471 for( Int_t z=0; z<zdim; z++ ){
50d05d7b 472 for( Int_t x=1; x<xdim-1; x++ ){
473 Int_t index = x*zdim+z;
aacedc3e 474 Double_t tmp = spe[index] - speFit[index];
50d05d7b 475 chi2 += tmp*tmp;
476 } // end for x
42da2935 477 } // end for z
478 return( chi2 );
a1f090e0 479}
42da2935 480//_______________________________________________________________________
aacedc3e 481void AliITSClusterFinderSDD::Minim( Int_t xdim, Int_t zdim, Double_t *param,
482 Double_t *prm0,Double_t *steprm,
483 Double_t *chisqr,Double_t *spe,
484 Double_t *speFit ){
42da2935 485 //
486 Int_t k, nnn, mmm, i;
aacedc3e 487 Double_t p1, delta, d1, chisq1, p2, chisq2, t, p3, chisq3, a, b, p0, chisqt;
42da2935 488 const Int_t knParam = 5;
489 Int_t npeak = (Int_t)param[0];
490 for( k=1; k<(npeak*knParam+1); k++ ) prm0[k] = param[k];
491 for( k=1; k<(npeak*knParam+1); k++ ){
50d05d7b 492 p1 = param[k];
493 delta = steprm[k];
494 d1 = delta;
495 // ENSURE THAT STEP SIZE IS SENSIBLY LARGER THAN MACHINE ROUND OFF
f4b7cee4 496 if( TMath::Abs( p1 ) > 1.0E-6 )
497 if ( TMath::Abs( delta/p1 ) < 1.0E-4 ) delta = p1/1000;
aacedc3e 498 else delta = (Double_t)1.0E-4;
50d05d7b 499 // EVALUATE CHI-SQUARED AT FIRST TWO SEARCH POINTS
500 PeakFunc( xdim, zdim, param, speFit );
501 chisq1 = ChiSqr( xdim, zdim, spe, speFit );
502 p2 = p1+delta;
503 param[k] = p2;
504 PeakFunc( xdim, zdim, param, speFit );
505 chisq2 = ChiSqr( xdim, zdim, spe, speFit );
506 if( chisq1 < chisq2 ){
507 // REVERSE DIRECTION OF SEARCH IF CHI-SQUARED IS INCREASING
508 delta = -delta;
509 t = p1;
510 p1 = p2;
511 p2 = t;
512 t = chisq1;
513 chisq1 = chisq2;
514 chisq2 = t;
515 } // end if
516 i = 1; nnn = 0;
517 do { // INCREMENT param(K) UNTIL CHI-SQUARED STARTS TO INCREASE
518 nnn++;
519 p3 = p2 + delta;
520 mmm = nnn - (nnn/5)*5; // multiplo de 5
521 if( mmm == 0 ){
522 d1 = delta;
523 // INCREASE STEP SIZE IF STEPPING TOWARDS MINIMUM IS TOO SLOW
524 delta *= 5;
525 } // end if
526 param[k] = p3;
527 // Constrain paramiters
528 Int_t kpos = (k-1) % knParam;
529 switch( kpos ){
530 case 0 :
531 if( param[k] <= 20 ) param[k] = fMinPeak;
532 break;
533 case 1 :
f4b7cee4 534 if( TMath::Abs( param[k] - prm0[k] ) > 1.5 ) param[k] = prm0[k];
50d05d7b 535 break;
536 case 2 :
f4b7cee4 537 if( TMath::Abs( param[k] - prm0[k] ) > 1. ) param[k] = prm0[k];
50d05d7b 538 break;
539 case 3 :
540 if( param[k] < .5 ) param[k] = .5;
541 break;
542 case 4 :
aacedc3e 543 if( param[k] < .288 ) param[k] = .288;// 1/sqrt(12) = 0.288
50d05d7b 544 if( param[k] > zdim*.5 ) param[k] = zdim*.5;
545 break;
546 }; // end switch
547 PeakFunc( xdim, zdim, param, speFit );
548 chisq3 = ChiSqr( xdim, zdim, spe, speFit );
549 if( chisq3 < chisq2 && nnn < 50 ){
550 p1 = p2;
551 p2 = p3;
552 chisq1 = chisq2;
553 chisq2 = chisq3;
554 }else i=0;
555 } while( i );
556 // FIND MINIMUM OF PARABOLA DEFINED BY LAST THREE POINTS
557 a = chisq1*(p2-p3)+chisq2*(p3-p1)+chisq3*(p1-p2);
558 b = chisq1*(p2*p2-p3*p3)+chisq2*(p3*p3-p1*p1)+chisq3*(p1*p1-p2*p2);
aacedc3e 559 if( a!=0 ) p0 = (Double_t)(0.5*b/a);
50d05d7b 560 else p0 = 10000;
561 //--IN CASE OF NEARLY EQUAL CHI-SQUARED AND TOO SMALL STEP SIZE PREVENT
562 // ERRONEOUS EVALUATION OF PARABOLA MINIMUM
563 //---NEXT TWO LINES CAN BE OMITTED FOR HIGHER PRECISION MACHINES
f4b7cee4 564 //dp = (Double_t) max (TMath::Abs(p3-p2), TMath::Abs(p2-p1));
565 //if( TMath::Abs( p2-p0 ) > dp ) p0 = p2;
50d05d7b 566 param[k] = p0;
567 // Constrain paramiters
568 Int_t kpos = (k-1) % knParam;
569 switch( kpos ){
570 case 0 :
571 if( param[k] <= 20 ) param[k] = fMinPeak;
572 break;
573 case 1 :
f4b7cee4 574 if( TMath::Abs( param[k] - prm0[k] ) > 1.5 ) param[k] = prm0[k];
50d05d7b 575 break;
576 case 2 :
f4b7cee4 577 if( TMath::Abs( param[k] - prm0[k] ) > 1. ) param[k] = prm0[k];
50d05d7b 578 break;
579 case 3 :
580 if( param[k] < .5 ) param[k] = .5;
581 break;
582 case 4 :
583 if( param[k] < .288 ) param[k] = .288; // 1/sqrt(12) = 0.288
584 if( param[k] > zdim*.5 ) param[k] = zdim*.5;
585 break;
586 }; // end switch
587 PeakFunc( xdim, zdim, param, speFit );
588 chisqt = ChiSqr( xdim, zdim, spe, speFit );
589 // DO NOT ALLOW ERRONEOUS INTERPOLATION
590 if( chisqt <= *chisqr ) *chisqr = chisqt;
591 else param[k] = prm0[k];
592 // OPTIMIZE SEARCH STEP FOR EVENTUAL NEXT CALL OF MINIM
593 steprm[k] = (param[k]-prm0[k])/5;
594 if( steprm[k] >= d1 ) steprm[k] = d1/5;
42da2935 595 } // end for k
596 // EVALUATE FIT AND CHI-SQUARED FOR OPTIMIZED PARAMETERS
597 PeakFunc( xdim, zdim, param, speFit );
598 *chisqr = ChiSqr( xdim, zdim, spe, speFit );
599 return;
a1f090e0 600}
42da2935 601//_________________________________________________________________________
602Int_t AliITSClusterFinderSDD::NoLinearFit( Int_t xdim, Int_t zdim,
aacedc3e 603 Double_t *param, Double_t *spe,
604 Int_t *niter, Double_t *chir ){
42da2935 605 // fit method from Comput. Phys. Commun 46(1987) 149
aacedc3e 606 const Double_t kchilmt = 0.01; // relative accuracy
50d05d7b 607 const Int_t knel = 3; // for parabolic minimization
608 const Int_t knstop = 50; // Max. iteration number
42da2935 609 const Int_t knParam = 5;
610 Int_t npeak = (Int_t)param[0];
611 // RETURN IF NUMBER OF DEGREES OF FREEDOM IS NOT POSITIVE
612 if( (xdim*zdim - npeak*knParam) <= 0 ) return( -1 );
aacedc3e 613 Double_t degFree = (xdim*zdim - npeak*knParam)-1;
42da2935 614 Int_t n, k, iterNum = 0;
aacedc3e 615 Double_t *prm0 = new Double_t[npeak*knParam+1];
616 Double_t *step = new Double_t[npeak*knParam+1];
617 Double_t *schi = new Double_t[npeak*knParam+1];
618 Double_t *sprm[3];
619 sprm[0] = new Double_t[npeak*knParam+1];
620 sprm[1] = new Double_t[npeak*knParam+1];
621 sprm[2] = new Double_t[npeak*knParam+1];
622 Double_t chi0, chi1, reldif, a, b, prmin, dp;
623 Double_t *speFit = new Double_t[ xdim*zdim ];
42da2935 624 PeakFunc( xdim, zdim, param, speFit );
625 chi0 = ChiSqr( xdim, zdim, spe, speFit );
626 chi1 = chi0;
627 for( k=1; k<(npeak*knParam+1); k++) prm0[k] = param[k];
50d05d7b 628 for( k=1 ; k<(npeak*knParam+1); k+=knParam ){
629 step[k] = param[k] / 20.0 ;
630 step[k+1] = param[k+1] / 50.0;
631 step[k+2] = param[k+2] / 50.0;
632 step[k+3] = param[k+3] / 20.0;
633 step[k+4] = param[k+4] / 20.0;
634 } // end for k
42da2935 635 Int_t out = 0;
636 do{
50d05d7b 637 iterNum++;
638 chi0 = chi1;
639 Minim( xdim, zdim, param, prm0, step, &chi1, spe, speFit );
f4b7cee4 640 reldif = ( chi1 > 0 ) ? ((Double_t) TMath::Abs( chi1-chi0)/chi1 ) : 0;
50d05d7b 641 // EXIT conditions
642 if( reldif < (float) kchilmt ){
643 *chir = (chi1>0) ? (float) TMath::Sqrt (chi1/degFree) :0;
644 *niter = iterNum;
645 out = 0;
646 break;
647 } // end if
648 if( (reldif < (float)(5*kchilmt)) && (iterNum > knstop) ){
649 *chir = (chi1>0) ?(float) TMath::Sqrt (chi1/degFree):0;
650 *niter = iterNum;
651 out = 0;
652 break;
653 } // end if
654 if( iterNum > 5*knstop ){
655 *chir = (chi1>0) ?(float) TMath::Sqrt (chi1/degFree):0;
656 *niter = iterNum;
657 out = 1;
658 break;
659 } // end if
660 if( iterNum <= knel ) continue;
661 n = iterNum - (iterNum/knel)*knel; // EXTRAPOLATION LIMIT COUNTER N
662 if( n > 3 || n == 0 ) continue;
663 schi[n-1] = chi1;
664 for( k=1; k<(npeak*knParam+1); k++ ) sprm[n-1][k] = param[k];
665 if( n != 3 ) continue;
666 // -EVALUATE EXTRAPOLATED VALUE OF EACH PARAMETER BY FINDING MINIMUM OF
667 // PARABOLA DEFINED BY LAST THREE CALLS OF MINIM
668 for( k=1; k<(npeak*knParam+1); k++ ){
aacedc3e 669 Double_t tmp0 = sprm[0][k];
670 Double_t tmp1 = sprm[1][k];
671 Double_t tmp2 = sprm[2][k];
50d05d7b 672 a = schi[0]*(tmp1-tmp2) + schi[1]*(tmp2-tmp0);
673 a += (schi[2]*(tmp0-tmp1));
674 b = schi[0]*(tmp1*tmp1-tmp2*tmp2);
675 b += (schi[1]*(tmp2*tmp2-tmp0*tmp0)+(schi[2]*
676 (tmp0*tmp0-tmp1*tmp1)));
677 if ((double)a < 1.0E-6) prmin = 0;
678 else prmin = (float) (0.5*b/a);
679 dp = 5*(tmp2-tmp0);
f4b7cee4 680 if( TMath::Abs(prmin-tmp2) > TMath::Abs(dp) ) prmin = tmp2+dp;
50d05d7b 681 param[k] = prmin;
682 step[k] = dp/10; // OPTIMIZE SEARCH STEP
683 } // end for k
42da2935 684 } while( kTRUE );
685 delete [] prm0;
686 delete [] step;
687 delete [] schi;
688 delete [] sprm[0];
689 delete [] sprm[1];
690 delete [] sprm[2];
691 delete [] speFit;
692 return( out );
a1f090e0 693}
50d05d7b 694
42da2935 695//______________________________________________________________________
04366a57 696void AliITSClusterFinderSDD::ResolveClusters(){
42da2935 697 // The function to resolve clusters if the clusters overlapping exists
24a1c341 698 Int_t i;
42da2935 699 // get number of clusters for this module
aacedc3e 700 Int_t nofClusters = NClusters();
42da2935 701 nofClusters -= fNclusters;
aacedc3e 702 Int_t fNofMaps = GetSeg()->Npz();
42da2935 703 Int_t fNofAnodes = fNofMaps/2;
aacedc3e 704 //Int_t fMaxNofSamples = GetSeg()->Npx();
42da2935 705 Int_t dummy=0;
aacedc3e 706 Double_t fTimeStep = GetSeg()->Dpx( dummy );
707 Double_t fSddLength = GetSeg()->Dx();
aacedc3e 708 Double_t anodePitch = GetSeg()->Dpz( dummy );
fcf95fc7 709 Int_t electronics =GetResp(fModule)->GetElectronics(); // 1 = PASCAL, 2 = OLA
404c1c29 710 AliITSCalibrationSDD* cal = (AliITSCalibrationSDD*)GetResp(fModule);
0599a018 711 AliITSresponseSDD* res = (AliITSresponseSDD*)cal->GetResponse();
712 const char *option=res->ZeroSuppOption();
404c1c29 713
50d05d7b 714
42da2935 715 for( Int_t j=0; j<nofClusters; j++ ){
50d05d7b 716 // get cluster information
aacedc3e 717 AliITSRawClusterSDD *clusterJ=(AliITSRawClusterSDD*) Cluster(j);
50d05d7b 718 Int_t astart = clusterJ->Astart();
719 Int_t astop = clusterJ->Astop();
720 Int_t tstart = clusterJ->Tstartf();
721 Int_t tstop = clusterJ->Tstopf();
722 Int_t wing = (Int_t)clusterJ->W();
723 if( wing == 2 ){
724 astart += fNofAnodes;
725 astop += fNofAnodes;
726 } // end if
727 Int_t xdim = tstop-tstart+3;
728 Int_t zdim = astop-astart+3;
d86f531c 729 if( xdim > 50 || zdim > 30 ) {
04366a57 730 Warning("ResolveClusters","xdim: %d , zdim: %d ",xdim,zdim);
d86f531c 731 continue;
732 }
aacedc3e 733 Double_t *sp = new Double_t[ xdim*zdim+1 ];
734 memset( sp, 0, sizeof(Double_t)*(xdim*zdim+1) );
50d05d7b 735
736 // make a local map from cluster region
737 for( Int_t ianode=astart; ianode<=astop; ianode++ ){
738 for( Int_t itime=tstart; itime<=tstop; itime++ ){
0599a018 739 Double_t fadc = Map()->GetSignal( ianode, itime );
20f3f947 740 if(!(strstr(option,"ZS"))){
0599a018 741 Double_t baseline=GetResp(fModule)->GetBaseline(ianode);
742 if( fadc > baseline ) fadc -= (Double_t)baseline;
743 else fadc = 0.;
744 }
50d05d7b 745 Int_t index = (itime-tstart+1)*zdim+(ianode-astart+1);
746 sp[index] = fadc;
747 } // time loop
748 } // anode loop
749
750 // search peaks on cluster
751 const Int_t kNp = 150;
752 Int_t peakX1[kNp];
753 Int_t peakZ1[kNp];
aacedc3e 754 Double_t peakAmp1[kNp];
50d05d7b 755 Int_t npeak = SearchPeak(sp,xdim,zdim,peakX1,peakZ1,peakAmp1,fMinPeak);
756
757 // if multiple peaks, split cluster
aacedc3e 758 if( npeak >= 1 ){
50d05d7b 759 // cout << "npeak " << npeak << endl;
760 // clusterJ->PrintInfo();
aacedc3e 761 Double_t *par = new Double_t[npeak*5+1];
762 par[0] = (Double_t)npeak;
48058160 763 // Initial parameters in cell dimentions
50d05d7b 764 Int_t k1 = 1;
765 for( i=0; i<npeak; i++ ){
766 par[k1] = peakAmp1[i];
767 par[k1+1] = peakX1[i]; // local time pos. [timebin]
768 par[k1+2] = peakZ1[i]; // local anode pos. [anodepitch]
aacedc3e 769 if( electronics == 1 ) par[k1+3] = 2.; // PASCAL
770 else if(electronics==2) par[k1+3] = 0.7;//tau [timebin] OLA
50d05d7b 771 par[k1+4] = .4; // sigma [anodepich]
aacedc3e 772 k1 += 5;
50d05d7b 773 } // end for i
774 Int_t niter;
aacedc3e 775 Double_t chir;
50d05d7b 776 NoLinearFit( xdim, zdim, par, sp, &niter, &chir );
aacedc3e 777 Double_t peakX[kNp];
778 Double_t peakZ[kNp];
779 Double_t sigma[kNp];
780 Double_t tau[kNp];
781 Double_t peakAmp[kNp];
782 Double_t integral[kNp];
50d05d7b 783 //get integrals => charge for each peak
784 PeakFunc( xdim, zdim, par, sp, integral );
785 k1 = 1;
786 for( i=0; i<npeak; i++ ){
787 peakAmp[i] = par[k1];
d86f531c 788 peakX[i] = par[k1+1];
789 peakZ[i] = par[k1+2];
790 tau[i] = par[k1+3];
791 sigma[i] = par[k1+4];
50d05d7b 792 k1+=5;
793 } // end for i
794 // calculate parameter for new clusters
795 for( i=0; i<npeak; i++ ){
796 AliITSRawClusterSDD clusterI( *clusterJ );
d86f531c 797
50d05d7b 798 Int_t newAnode = peakZ1[i]-1 + astart;
d86f531c 799
800 // Int_t newiTime = peakX1[i]-1 + tstart;
801 // Int_t shift = (Int_t)(fTimeCorr/fTimeStep + 0.5);
802 // if( newiTime > shift && newiTime < (fMaxNofSamples-shift) )
803 // shift = 0;
aacedc3e 804 // Int_t peakpos = Map()->GetHitIndex(newAnode,newiTime+shift );
d86f531c 805 // clusterI.SetPeakPos( peakpos );
806
50d05d7b 807 clusterI.SetPeakAmpl( peakAmp1[i] );
aacedc3e 808 Double_t newAnodef = peakZ[i] - 0.5 + astart;
809 Double_t newiTimef = peakX[i] - 1 + tstart;
50d05d7b 810 if( wing == 2 ) newAnodef -= fNofAnodes;
aacedc3e 811 Double_t anodePath = (newAnodef - fNofAnodes/2)*anodePitch;
50d05d7b 812 newiTimef *= fTimeStep;
813 if( newiTimef > fTimeCorr ) newiTimef -= fTimeCorr;
814 if( electronics == 1 ){
48058160 815 // newiTimef *= 0.999438; // PASCAL
816 // newiTimef += (6./fDriftSpeed - newiTimef/3000.);
50d05d7b 817 }else if( electronics == 2 )
818 newiTimef *= 0.99714; // OLA
d86f531c 819
820 Int_t timeBin = (Int_t)(newiTimef/fTimeStep+0.5);
aacedc3e 821 Int_t peakpos = Map()->GetHitIndex( newAnode, timeBin );
d86f531c 822 if( peakpos < 0 ) {
823 for( Int_t ii=0; ii<3; ii++ ) {
aacedc3e 824 peakpos = Map()->GetHitIndex( newAnode, timeBin+ii );
d86f531c 825 if( peakpos > 0 ) break;
aacedc3e 826 peakpos = Map()->GetHitIndex( newAnode, timeBin-ii );
d86f531c 827 if( peakpos > 0 ) break;
828 }
829 }
830
831 if( peakpos < 0 ) {
04366a57 832 //Warning("ResolveClusters",
aacedc3e 833 // "Digit not found for cluster");
f77f13c8 834 //if(AliDebugLevel()>=3) clusterI.PrintInfo();
d86f531c 835 continue;
836 }
404c1c29 837 clusterI.SetPeakPos( peakpos );
4952f440 838 Float_t dp = cal->GetDriftPath(newiTimef,newAnodef);
c9a38d3d 839 Float_t driftPath = fSddLength - (Double_t)dp;
840 Float_t sign = ( wing == 1 ) ? -1. : 1.;
841 Float_t xcoord = driftPath*sign * 0.0001;
842 Float_t zcoord = anodePath * 0.0001;
843 Float_t corrx=0, corrz=0;
844 cal->GetCorrections(zcoord,xcoord,corrz,corrx,GetSeg());
845 xcoord+=corrx;
846 zcoord+=corrz;
404c1c29 847 clusterI.SetX( xcoord );
848 clusterI.SetZ( zcoord );
50d05d7b 849 clusterI.SetAnode( newAnodef );
850 clusterI.SetTime( newiTimef );
851 clusterI.SetAsigma( sigma[i]*anodePitch );
852 clusterI.SetTsigma( tau[i]*fTimeStep );
853 clusterI.SetQ( integral[i] );
d86f531c 854
7d62fb64 855 fDetTypeRec->AddCluster( 1, &clusterI );
50d05d7b 856 } // end for i
aacedc3e 857 Clusters()->RemoveAt( j );
50d05d7b 858 delete [] par;
48058160 859 } else { // something odd
04366a57 860 Warning( "ResolveClusters",
aacedc3e 861 "--- Peak not found!!!! minpeak=%d ,cluster peak= %f"
862 " , module= %d",
863 fMinPeak, clusterJ->PeakAmpl(),GetModule());
d86f531c 864 clusterJ->PrintInfo();
04366a57 865 Warning( "ResolveClusters"," xdim= %d zdim= %d", xdim-2, zdim-2 );
50d05d7b 866 }
867 delete [] sp;
42da2935 868 } // cluster loop
aacedc3e 869 Clusters()->Compress();
870// Map()->ClearMap();
a1f090e0 871}
42da2935 872//________________________________________________________________________
873void AliITSClusterFinderSDD::GroupClusters(){
874 // group clusters
875 Int_t dummy=0;
aacedc3e 876 Double_t fTimeStep = GetSeg()->Dpx(dummy);
42da2935 877 // get number of clusters for this module
aacedc3e 878 Int_t nofClusters = NClusters();
42da2935 879 nofClusters -= fNclusters;
880 AliITSRawClusterSDD *clusterI;
881 AliITSRawClusterSDD *clusterJ;
882 Int_t *label = new Int_t [nofClusters];
883 Int_t i,j;
884 for(i=0; i<nofClusters; i++) label[i] = 0;
885 for(i=0; i<nofClusters; i++) {
50d05d7b 886 if(label[i] != 0) continue;
887 for(j=i+1; j<nofClusters; j++) {
888 if(label[j] != 0) continue;
aacedc3e 889 clusterI = (AliITSRawClusterSDD*) Cluster(i);
890 clusterJ = (AliITSRawClusterSDD*) Cluster(j);
50d05d7b 891 // 1.3 good
892 if(clusterI->T() < fTimeStep*60) fDAnode = 4.2; // TB 3.2
893 if(clusterI->T() < fTimeStep*10) fDAnode = 1.5; // TB 1.
894 Bool_t pair = clusterI->Brother(clusterJ,fDAnode,fDTime);
895 if(!pair) continue;
f77f13c8 896 if(AliDebugLevel()>=4){
aacedc3e 897 clusterI->PrintInfo();
898 clusterJ->PrintInfo();
f77f13c8 899 } // end if AliDebugLevel
50d05d7b 900 clusterI->Add(clusterJ);
901 label[j] = 1;
aacedc3e 902 Clusters()->RemoveAt(j);
50d05d7b 903 j=i; // <- Ernesto
904 } // J clusters
905 label[i] = 1;
42da2935 906 } // I clusters
aacedc3e 907 Clusters()->Compress();
42da2935 908
909 delete [] label;
910 return;
b0f5e3fc 911}
42da2935 912//________________________________________________________________________
913void AliITSClusterFinderSDD::SelectClusters(){
914 // get number of clusters for this module
aacedc3e 915 Int_t nofClusters = NClusters();
b0f5e3fc 916
42da2935 917 nofClusters -= fNclusters;
918 Int_t i;
919 for(i=0; i<nofClusters; i++) {
aacedc3e 920 AliITSRawClusterSDD *clusterI =(AliITSRawClusterSDD*) Cluster(i);
50d05d7b 921 Int_t rmflg = 0;
aacedc3e 922 Double_t wy = 0.;
50d05d7b 923 if(clusterI->Anodes() != 0.) {
aacedc3e 924 wy = ((Double_t) clusterI->Samples())/clusterI->Anodes();
50d05d7b 925 } // end if
926 Int_t amp = (Int_t) clusterI->PeakAmpl();
927 Int_t cha = (Int_t) clusterI->Q();
928 if(amp < fMinPeak) rmflg = 1;
929 if(cha < fMinCharge) rmflg = 1;
930 if(wy < fMinNCells) rmflg = 1;
931 //if(wy > fMaxNCells) rmflg = 1;
aacedc3e 932 if(rmflg) Clusters()->RemoveAt(i);
42da2935 933 } // I clusters
aacedc3e 934 Clusters()->Compress();
42da2935 935 return;
b0f5e3fc 936}
42da2935 937
42da2935 938//______________________________________________________________________
4952f440 939void AliITSClusterFinderSDD::GetRecPoints(AliITSCalibrationSDD* cal){
42da2935 940 // get rec points
04366a57 941
42da2935 942 // get number of clusters for this module
aacedc3e 943 Int_t nofClusters = NClusters();
42da2935 944 nofClusters -= fNclusters;
aacedc3e 945 const Double_t kconvGeV = 1.e-6; // GeV -> KeV
946 const Double_t kconv = 1.0e-4;
4952f440 947 const Double_t kcmToMicrons = 10000.;
aacedc3e 948 const Double_t kRMSx = 38.0*kconv; // microns->cm ITS TDR Table 1.3
949 const Double_t kRMSz = 28.0*kconv; // microns->cm ITS TDR Table 1.3
4952f440 950 Int_t nAnodes=GetSeg()->NpzHalf();
d86f531c 951 Int_t i;
42da2935 952 Int_t ix, iz, idx=-1;
953 AliITSdigitSDD *dig=0;
aacedc3e 954 Int_t ndigits=NDigits();
00a7cc50 955
956 Int_t lay,lad,det;
957 fDetTypeRec->GetITSgeom()->GetModuleId(fModule,lay,lad,det);
958 Int_t ind=(lad-1)*fDetTypeRec->GetITSgeom()->GetNdetectors(lay)+(det-1);
959 Int_t lyr=(lay-1);
960
961
42da2935 962 for(i=0; i<nofClusters; i++) {
aacedc3e 963 AliITSRawClusterSDD *clusterI = (AliITSRawClusterSDD*)Cluster(i);
50d05d7b 964 if(!clusterI) Error("SDD: GetRecPoints","i clusterI ",i,clusterI);
965 if(clusterI) idx=clusterI->PeakPos();
966 if(idx>ndigits) Error("SDD: GetRecPoints","idx ndigits",idx,ndigits);
967 // try peak neighbours - to be done
aacedc3e 968 if(idx&&idx<= ndigits) dig =(AliITSdigitSDD*)GetDigit(idx);
d86f531c 969 if(!dig) {
50d05d7b 970 // try cog
4952f440 971 Float_t xMicrons=clusterI->X()*kcmToMicrons;
972 Float_t zMicrons=clusterI->Z()*kcmToMicrons;
973 Float_t zAnode=zMicrons/GetSeg()->Dpz(0)+nAnodes/2;
974 Float_t driftSpeed=cal->GetDriftSpeedAtAnode(zAnode);
975 Float_t driftPath=GetSeg()->Dx()-TMath::Abs(xMicrons);
976 ix=1+(Int_t)(driftPath/driftSpeed/GetSeg()->Dpx(0));
977 iz=1+(Int_t)zAnode;
978 if(xMicrons>0) iz+=nAnodes;
aacedc3e 979 dig = (AliITSdigitSDD*)Map()->GetHit(iz-1,ix-1);
50d05d7b 980 // if null try neighbours
aacedc3e 981 if (!dig) dig = (AliITSdigitSDD*)Map()->GetHit(iz-1,ix);
982 if (!dig) dig = (AliITSdigitSDD*)Map()->GetHit(iz-1,ix+1);
50d05d7b 983 if (!dig) printf("SDD: cannot assign the track number!\n");
984 } // end if !dig
75fb37cc 985
986 Int_t lab[4] = {-3141593,-3141593,-3141593,ind};
987 if (dig) {
988 lab[0] = dig->GetTrack(0);
989 lab[1] = dig->GetTrack(1);
990 lab[2] = dig->GetTrack(2);
991 }
992 Float_t hit[5] = {clusterI->X(),clusterI->Z(),kRMSx*kRMSx,kRMSz*kRMSz,clusterI->Q()};
993 Int_t info[3] = {0,0,lyr};
994
995 AliITSRecPoint rnew(lab,hit,info,kTRUE);
50d05d7b 996 rnew.SetdEdX(kconvGeV*clusterI->Q());
d86f531c 997
7d62fb64 998 fDetTypeRec->AddRecPoint(rnew);
42da2935 999 } // I clusters
aacedc3e 1000// Map()->ClearMap();
b0f5e3fc 1001}
42da2935 1002//______________________________________________________________________
1003void AliITSClusterFinderSDD::FindRawClusters(Int_t mod){
1004 // find raw clusters
50d05d7b 1005
aacedc3e 1006 SetModule(mod);
f45f6658 1007 SetCutAmplitude(mod);
4952f440 1008 AliITSCalibrationSDD* cal = (AliITSCalibrationSDD*)GetResp(mod);
f45f6658 1009 Int_t nanodes=GetSeg()->Npz();
1010 Int_t noise=0;
1011 for(Int_t i=0;i<nanodes;i++){
4952f440 1012 noise+=(Int_t)cal->GetNoiseAfterElectronics(i);
f45f6658 1013 }
1014 SetMinPeak((noise/nanodes)*5);
a1f090e0 1015 Find1DClustersE();
b0f5e3fc 1016 GroupClusters();
1017 SelectClusters();
04366a57 1018 ResolveClusters();
4952f440 1019 GetRecPoints(cal);
b0f5e3fc 1020}
42da2935 1021//_______________________________________________________________________
d2f55a22 1022void AliITSClusterFinderSDD::PrintStatus() const{
42da2935 1023 // Print SDD cluster finder Parameters
1024
1025 cout << "**************************************************" << endl;
1026 cout << " Silicon Drift Detector Cluster Finder Parameters " << endl;
1027 cout << "**************************************************" << endl;
1028 cout << "Number of Clusters: " << fNclusters << endl;
1029 cout << "Anode Tolerance: " << fDAnode << endl;
1030 cout << "Time Tolerance: " << fDTime << endl;
1031 cout << "Time correction (electronics): " << fTimeCorr << endl;
f45f6658 1032 cout << "Cut Amplitude (threshold): " << fCutAmplitude[0] << endl;
42da2935 1033 cout << "Minimum Amplitude: " << fMinPeak << endl;
1034 cout << "Minimum Charge: " << fMinCharge << endl;
1035 cout << "Minimum number of cells/clusters: " << fMinNCells << endl;
1036 cout << "Maximum number of cells/clusters: " << fMaxNCells << endl;
1037 cout << "**************************************************" << endl;
a1f090e0 1038}
404c1c29 1039
404c1c29 1040