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Modifications in order to reconstruct cosmic rays (Y. Belikov)
[u/mrichter/AliRoot.git] / ITS / AliITSClusterFinderSDD.cxx
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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"
33#include "AliLog.h"
b0f5e3fc 34
b0f5e3fc 35ClassImp(AliITSClusterFinderSDD)
36
aacedc3e 37//______________________________________________________________________
38AliITSClusterFinderSDD::AliITSClusterFinderSDD():
39AliITSClusterFinder(),
40fNclusters(0),
41fDAnode(0.0),
42fDTime(0.0),
43fTimeCorr(0.0),
44fCutAmplitude(0),
45fMinPeak(0),
46fMinCharge(0),
47fMinNCells(0),
48fMaxNCells(0){
49 // default constructor
50}
42da2935 51//______________________________________________________________________
8ba39da9 52AliITSClusterFinderSDD::AliITSClusterFinderSDD(AliITSDetTypeRec* dettyp,
50d05d7b 53 TClonesArray *digits,
aacedc3e 54 TClonesArray *recp):
8ba39da9 55AliITSClusterFinder(dettyp),
aacedc3e 56fNclusters(0),
57fDAnode(0.0),
58fDTime(0.0),
59fTimeCorr(0.0),
60fCutAmplitude(0),
61fMinPeak(0),
62fMinCharge(0),
63fMinNCells(0),
64fMaxNCells(0){
42da2935 65 // standard constructor
78a228db 66
aacedc3e 67 SetDigits(digits);
68 SetClusters(recp);
8ba39da9 69 SetCutAmplitude(fDetTypeRec->GetITSgeom()->GetStartSDD());
b0f5e3fc 70 SetDAnode();
71 SetDTime();
f45f6658 72 SetMinPeak((Int_t)((AliITSCalibrationSDD*)GetResp(fDetTypeRec->GetITSgeom()->GetStartSDD()))->GetNoiseAfterElectronics(0)*5);
78a228db 73 SetMinNCells();
74 SetMaxNCells();
75 SetTimeCorr();
a1f090e0 76 SetMinCharge();
aacedc3e 77 SetMap(new AliITSMapA1(GetSeg(),Digits(),fCutAmplitude));
e8189707 78}
42da2935 79//______________________________________________________________________
8ba39da9 80void AliITSClusterFinderSDD::SetCutAmplitude(Int_t mod,Double_t nsigma){
42da2935 81 // set the signal threshold for cluster finder
f45f6658 82 Double_t baseline,noiseAfterEl;
42da2935 83
0599a018 84 AliITSresponseSDD* res = (AliITSresponseSDD*)((AliITSCalibrationSDD*)GetResp(mod))->GetResponse();
85 const char *option=res->ZeroSuppOption();
f45f6658 86 Int_t nanodes = GetResp(mod)->Wings()*GetResp(mod)->Channels()*GetResp(mod)->Chips();
87 fCutAmplitude.Set(nanodes);
88 for(Int_t ian=0;ian<nanodes;ian++){
f45f6658 89 noiseAfterEl = ((AliITSCalibrationSDD*)GetResp(mod))->GetNoiseAfterElectronics(ian);
0599a018 90 if((strstr(option,"1D")) || (strstr(option,"2D"))){
91 fCutAmplitude[ian] = (Int_t)(nsigma*noiseAfterEl);
92 }
93 else{
94 baseline=GetResp(mod)->GetBaseline(ian);
95 fCutAmplitude[ian] = (Int_t)((baseline + nsigma*noiseAfterEl));
96 }
f45f6658 97 }
5dd4cc39 98}
42da2935 99//______________________________________________________________________
100void AliITSClusterFinderSDD::Find1DClusters(){
101 // find 1D clusters
a1f090e0 102
42da2935 103 // retrieve the parameters
aacedc3e 104 Int_t fNofMaps = GetSeg()->Npz();
105 Int_t fMaxNofSamples = GetSeg()->Npx();
b48af428 106 Int_t fNofAnodes = fNofMaps/2;
107 Int_t dummy = 0;
aacedc3e 108 Double_t fTimeStep = GetSeg()->Dpx(dummy);
109 Double_t fSddLength = GetSeg()->Dx();
aacedc3e 110 Double_t anodePitch = GetSeg()->Dpz(dummy);
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);
0599a018 199 if(!((strstr(option,"1D")) || (strstr(option,"2D")))){
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
42da2935 225
aacedc3e 226 Double_t clusteranodePath = (clusterAnode - fNofAnodes/2)*
227 anodePitch;
404c1c29 228 Double_t clusterDriftPath = (Double_t)cal->GetDriftPath(clusterTime,clusteranodePath);
50d05d7b 229 clusterDriftPath = fSddLength-clusterDriftPath;
230 if(clusterCharge <= 0.) break;
231 AliITSRawClusterSDD clust(j+1,//i
232 clusterAnode,clusterTime,//ff
233 clusterCharge, //f
234 clusterPeakAmplitude, //f
235 peakpos, //i
236 0.,0.,clusterDriftPath,//fff
237 clusteranodePath, //f
238 clusterMult, //i
239 0,0,0,0,0,0,0);//7*i
7d62fb64 240 fDetTypeRec->AddCluster(1,&clust);
50d05d7b 241 it = tstop;
242 } // ilcl
243 it++;
244 } // while (samples)
245 } // anodes
42da2935 246 } // detectors (2)
42da2935 247
248 for(i=0;i<fNofAnodes;i++) delete[] dfadc[i];
249 delete [] dfadc;
a1f090e0 250
42da2935 251 return;
a1f090e0 252}
42da2935 253//______________________________________________________________________
254void AliITSClusterFinderSDD::Find1DClustersE(){
24a1c341 255 // find 1D clusters
42da2935 256 // retrieve the parameters
aacedc3e 257 Int_t fNofMaps = GetSeg()->Npz();
258 Int_t fMaxNofSamples = GetSeg()->Npx();
42da2935 259 Int_t fNofAnodes = fNofMaps/2;
260 Int_t dummy=0;
aacedc3e 261 Double_t fTimeStep = GetSeg()->Dpx( dummy );
262 Double_t fSddLength = GetSeg()->Dx();
aacedc3e 263 Double_t anodePitch = GetSeg()->Dpz( dummy );
404c1c29 264 AliITSCalibrationSDD* cal = (AliITSCalibrationSDD*)GetResp(fModule);
aacedc3e 265 Map()->ClearMap();
f45f6658 266 Map()->SetThresholdArr( fCutAmplitude );
267 Map()->FillMap2();
fcf95fc7 268
0599a018 269 AliITSresponseSDD* res = (AliITSresponseSDD*)cal->GetResponse();
270 const char *option=res->ZeroSuppOption();
271
42da2935 272 Int_t nClu = 0;
50d05d7b 273 // cout << "Search cluster... "<< endl;
42da2935 274 for( Int_t j=0; j<2; j++ ){
50d05d7b 275 for( Int_t k=0; k<fNofAnodes; k++ ){
0599a018 276 Int_t idx = j*fNofAnodes+k;
50d05d7b 277 Bool_t on = kFALSE;
278 Int_t start = 0;
279 Int_t nTsteps = 0;
aacedc3e 280 Double_t fmax = 0.;
50d05d7b 281 Int_t lmax = 0;
aacedc3e 282 Double_t charge = 0.;
283 Double_t time = 0.;
284 Double_t anode = k+0.5;
50d05d7b 285 Int_t peakpos = -1;
286 for( Int_t l=0; l<fMaxNofSamples; l++ ){
aacedc3e 287 Double_t fadc = (Double_t)Map()->GetSignal( idx, l );
50d05d7b 288 if( fadc > 0.0 ){
289 if( on == kFALSE && l<fMaxNofSamples-4){
290 // star RawCluster (reset var.)
aacedc3e 291 Double_t fadc1 = (Double_t)Map()->GetSignal( idx, l+1 );
50d05d7b 292 if( fadc1 < fadc ) continue;
293 start = l;
294 fmax = 0.;
295 lmax = 0;
296 time = 0.;
297 charge = 0.;
298 on = kTRUE;
299 nTsteps = 0;
300 } // end if on...
301 nTsteps++ ;
0599a018 302 if(!((strstr(option,"1D")) || (strstr(option,"2D")))){
303 Double_t baseline=GetResp(fModule)->GetBaseline(idx);
304 if( fadc > baseline ) fadc -= baseline;
305 else fadc=0.;
306 }
50d05d7b 307 charge += fadc;
308 time += fadc*l;
309 if( fadc > fmax ){
310 fmax = fadc;
311 lmax = l;
312 Int_t shift = (Int_t)(fTimeCorr/fTimeStep + 0.5);
313 if( l > shift && l < (fMaxNofSamples-shift) )
aacedc3e 314 peakpos = Map()->GetHitIndex( idx, l+shift );
50d05d7b 315 else
aacedc3e 316 peakpos = Map()->GetHitIndex( idx, l );
317 if( peakpos < 0) peakpos = Map()->GetHitIndex(idx,l);
50d05d7b 318 } // end if fadc
319 }else{ // end fadc>0
320 if( on == kTRUE ){
321 if( nTsteps > 2 ){
322 // min # of timesteps for a RawCluster
323 // Found a RawCluster...
324 Int_t stop = l-1;
325 time /= (charge/fTimeStep); // ns
326 // time = lmax*fTimeStep; // ns
327 if( time > fTimeCorr ) time -= fTimeCorr; // ns
aacedc3e 328 Double_t anodePath =(anode-fNofAnodes/2)*anodePitch;
404c1c29 329
330 Double_t driftPath = (Double_t)cal->GetDriftPath(time,anodePath);
50d05d7b 331 driftPath = fSddLength-driftPath;
332 AliITSRawClusterSDD clust(j+1,anode,time,charge,
333 fmax, peakpos,0.,0.,
334 driftPath,anodePath,
335 nTsteps,start,stop,
336 start, stop, 1, k, k );
7d62fb64 337 fDetTypeRec->AddCluster( 1, &clust );
f77f13c8 338 if(AliDebugLevel()>=5) clust.PrintInfo();
50d05d7b 339 nClu++;
340 } // end if nTsteps
341 on = kFALSE;
342 } // end if on==kTRUE
343 } // end if fadc>0
344 } // samples
345 } // anodes
42da2935 346 } // wings
f77f13c8 347 AliDebug(3,Form("# Rawclusters %d",nClu));
42da2935 348 return;
a1f090e0 349}
42da2935 350//_______________________________________________________________________
aacedc3e 351Int_t AliITSClusterFinderSDD::SearchPeak(Double_t *spect,Int_t xdim,Int_t zdim,
50d05d7b 352 Int_t *peakX, Int_t *peakZ,
aacedc3e 353 Double_t *peakAmp, Double_t minpeak ){
42da2935 354 // search peaks on a 2D cluster
355 Int_t npeak = 0; // # peaks
56fff130 356 Int_t i,j;
42da2935 357 // search peaks
358 for( Int_t z=1; z<zdim-1; z++ ){
48058160 359 for( Int_t x=1; x<xdim-2; x++ ){
aacedc3e 360 Double_t sxz = spect[x*zdim+z];
361 Double_t sxz1 = spect[(x+1)*zdim+z];
362 Double_t sxz2 = spect[(x-1)*zdim+z];
50d05d7b 363 // search a local max. in s[x,z]
364 if( sxz < minpeak || sxz1 <= 0 || sxz2 <= 0 ) continue;
365 if( sxz >= spect[(x+1)*zdim+z ] && sxz >= spect[(x-1)*zdim+z ] &&
366 sxz >= spect[x*zdim +z+1] && sxz >= spect[x*zdim +z-1] &&
367 sxz >= spect[(x+1)*zdim+z+1] && sxz >= spect[(x+1)*zdim+z-1] &&
368 sxz >= spect[(x-1)*zdim+z+1] && sxz >= spect[(x-1)*zdim+z-1] ){
369 // peak found
370 peakX[npeak] = x;
371 peakZ[npeak] = z;
372 peakAmp[npeak] = sxz;
373 npeak++;
374 } // end if ....
375 } // end for x
42da2935 376 } // end for z
377 // search groups of peaks with same amplitude.
378 Int_t *flag = new Int_t[npeak];
379 for( i=0; i<npeak; i++ ) flag[i] = 0;
380 for( i=0; i<npeak; i++ ){
50d05d7b 381 for( j=0; j<npeak; j++ ){
382 if( i==j) continue;
383 if( flag[j] > 0 ) continue;
384 if( peakAmp[i] == peakAmp[j] &&
385 TMath::Abs(peakX[i]-peakX[j])<=1 &&
386 TMath::Abs(peakZ[i]-peakZ[j])<=1 ){
387 if( flag[i] == 0) flag[i] = i+1;
388 flag[j] = flag[i];
389 } // end if ...
390 } // end for j
42da2935 391 } // end for i
50d05d7b 392 // make average of peak groups
42da2935 393 for( i=0; i<npeak; i++ ){
50d05d7b 394 Int_t nFlag = 1;
395 if( flag[i] <= 0 ) continue;
396 for( j=0; j<npeak; j++ ){
397 if( i==j ) continue;
398 if( flag[j] != flag[i] ) continue;
399 peakX[i] += peakX[j];
400 peakZ[i] += peakZ[j];
401 nFlag++;
402 npeak--;
403 for( Int_t k=j; k<npeak; k++ ){
404 peakX[k] = peakX[k+1];
405 peakZ[k] = peakZ[k+1];
406 peakAmp[k] = peakAmp[k+1];
407 flag[k] = flag[k+1];
408 } // end for k
409 j--;
410 } // end for j
411 if( nFlag > 1 ){
412 peakX[i] /= nFlag;
413 peakZ[i] /= nFlag;
414 } // end fi nFlag
42da2935 415 } // end for i
416 delete [] flag;
417 return( npeak );
a1f090e0 418}
42da2935 419//______________________________________________________________________
aacedc3e 420void AliITSClusterFinderSDD::PeakFunc( Int_t xdim, Int_t zdim, Double_t *par,
421 Double_t *spe, Double_t *integral){
24a1c341 422 // function used to fit the clusters
50d05d7b 423 // par -> parameters..
24a1c341 424 // par[0] number of peaks.
425 // for each peak i=1, ..., par[0]
50d05d7b 426 // par[i] = Ampl.
427 // par[i+1] = xpos
428 // par[i+2] = zpos
429 // par[i+3] = tau
430 // par[i+4] = sigma.
fcf95fc7 431 Int_t electronics = GetResp(fModule)->GetElectronics(); // 1 = PASCAL, 2 = OLA
24a1c341 432 const Int_t knParam = 5;
433 Int_t npeak = (Int_t)par[0];
42da2935 434
aacedc3e 435 memset( spe, 0, sizeof( Double_t )*zdim*xdim );
42da2935 436
24a1c341 437 Int_t k = 1;
42da2935 438 for( Int_t i=0; i<npeak; i++ ){
24a1c341 439 if( integral != 0 ) integral[i] = 0.;
aacedc3e 440 Double_t sigmaA2 = par[k+4]*par[k+4]*2.;
441 Double_t t2 = par[k+3]; // PASCAL
bf3f2830 442 if( electronics == 2 ) { t2 *= t2; t2 *= 2; } // OLA
42da2935 443 for( Int_t z=0; z<zdim; z++ ){
444 for( Int_t x=0; x<xdim; x++ ){
aacedc3e 445 Double_t z2 = (z-par[k+2])*(z-par[k+2])/sigmaA2;
446 Double_t x2 = 0.;
447 Double_t signal = 0.;
42da2935 448 if( electronics == 1 ){ // PASCAL
bf3f2830 449 x2 = (x-par[k+1]+t2)/t2;
42da2935 450 signal = (x2>0.) ? par[k]*x2*exp(-x2+1.-z2) :0.0; // RCCR2
451 // signal =(x2>0.) ? par[k]*x2*x2*exp(-2*x2+2.-z2 ):0.0;//RCCR
452 }else if( electronics == 2 ) { // OLA
bf3f2830 453 x2 = (x-par[k+1])*(x-par[k+1])/t2;
50d05d7b 454 signal = par[k] * exp( -x2 - z2 );
455 } else {
aacedc3e 456 Warning("PeakFunc","Wrong SDD Electronics = %d",
457 electronics);
50d05d7b 458 // exit( 1 );
459 } // end if electronicx
24a1c341 460 spe[x*zdim+z] += signal;
461 if( integral != 0 ) integral[i] += signal;
42da2935 462 } // end for x
463 } // end for z
24a1c341 464 k += knParam;
42da2935 465 } // end for i
24a1c341 466 return;
a1f090e0 467}
42da2935 468//__________________________________________________________________________
aacedc3e 469Double_t AliITSClusterFinderSDD::ChiSqr( Int_t xdim, Int_t zdim, Double_t *spe,
470 Double_t *speFit ) const{
42da2935 471 // EVALUATES UNNORMALIZED CHI-SQUARED
aacedc3e 472 Double_t chi2 = 0.;
42da2935 473 for( Int_t z=0; z<zdim; z++ ){
50d05d7b 474 for( Int_t x=1; x<xdim-1; x++ ){
475 Int_t index = x*zdim+z;
aacedc3e 476 Double_t tmp = spe[index] - speFit[index];
50d05d7b 477 chi2 += tmp*tmp;
478 } // end for x
42da2935 479 } // end for z
480 return( chi2 );
a1f090e0 481}
42da2935 482//_______________________________________________________________________
aacedc3e 483void AliITSClusterFinderSDD::Minim( Int_t xdim, Int_t zdim, Double_t *param,
484 Double_t *prm0,Double_t *steprm,
485 Double_t *chisqr,Double_t *spe,
486 Double_t *speFit ){
42da2935 487 //
488 Int_t k, nnn, mmm, i;
aacedc3e 489 Double_t p1, delta, d1, chisq1, p2, chisq2, t, p3, chisq3, a, b, p0, chisqt;
42da2935 490 const Int_t knParam = 5;
491 Int_t npeak = (Int_t)param[0];
492 for( k=1; k<(npeak*knParam+1); k++ ) prm0[k] = param[k];
493 for( k=1; k<(npeak*knParam+1); k++ ){
50d05d7b 494 p1 = param[k];
495 delta = steprm[k];
496 d1 = delta;
497 // ENSURE THAT STEP SIZE IS SENSIBLY LARGER THAN MACHINE ROUND OFF
f4b7cee4 498 if( TMath::Abs( p1 ) > 1.0E-6 )
499 if ( TMath::Abs( delta/p1 ) < 1.0E-4 ) delta = p1/1000;
aacedc3e 500 else delta = (Double_t)1.0E-4;
50d05d7b 501 // EVALUATE CHI-SQUARED AT FIRST TWO SEARCH POINTS
502 PeakFunc( xdim, zdim, param, speFit );
503 chisq1 = ChiSqr( xdim, zdim, spe, speFit );
504 p2 = p1+delta;
505 param[k] = p2;
506 PeakFunc( xdim, zdim, param, speFit );
507 chisq2 = ChiSqr( xdim, zdim, spe, speFit );
508 if( chisq1 < chisq2 ){
509 // REVERSE DIRECTION OF SEARCH IF CHI-SQUARED IS INCREASING
510 delta = -delta;
511 t = p1;
512 p1 = p2;
513 p2 = t;
514 t = chisq1;
515 chisq1 = chisq2;
516 chisq2 = t;
517 } // end if
518 i = 1; nnn = 0;
519 do { // INCREMENT param(K) UNTIL CHI-SQUARED STARTS TO INCREASE
520 nnn++;
521 p3 = p2 + delta;
522 mmm = nnn - (nnn/5)*5; // multiplo de 5
523 if( mmm == 0 ){
524 d1 = delta;
525 // INCREASE STEP SIZE IF STEPPING TOWARDS MINIMUM IS TOO SLOW
526 delta *= 5;
527 } // end if
528 param[k] = p3;
529 // Constrain paramiters
530 Int_t kpos = (k-1) % knParam;
531 switch( kpos ){
532 case 0 :
533 if( param[k] <= 20 ) param[k] = fMinPeak;
534 break;
535 case 1 :
f4b7cee4 536 if( TMath::Abs( param[k] - prm0[k] ) > 1.5 ) param[k] = prm0[k];
50d05d7b 537 break;
538 case 2 :
f4b7cee4 539 if( TMath::Abs( param[k] - prm0[k] ) > 1. ) param[k] = prm0[k];
50d05d7b 540 break;
541 case 3 :
542 if( param[k] < .5 ) param[k] = .5;
543 break;
544 case 4 :
aacedc3e 545 if( param[k] < .288 ) param[k] = .288;// 1/sqrt(12) = 0.288
50d05d7b 546 if( param[k] > zdim*.5 ) param[k] = zdim*.5;
547 break;
548 }; // end switch
549 PeakFunc( xdim, zdim, param, speFit );
550 chisq3 = ChiSqr( xdim, zdim, spe, speFit );
551 if( chisq3 < chisq2 && nnn < 50 ){
552 p1 = p2;
553 p2 = p3;
554 chisq1 = chisq2;
555 chisq2 = chisq3;
556 }else i=0;
557 } while( i );
558 // FIND MINIMUM OF PARABOLA DEFINED BY LAST THREE POINTS
559 a = chisq1*(p2-p3)+chisq2*(p3-p1)+chisq3*(p1-p2);
560 b = chisq1*(p2*p2-p3*p3)+chisq2*(p3*p3-p1*p1)+chisq3*(p1*p1-p2*p2);
aacedc3e 561 if( a!=0 ) p0 = (Double_t)(0.5*b/a);
50d05d7b 562 else p0 = 10000;
563 //--IN CASE OF NEARLY EQUAL CHI-SQUARED AND TOO SMALL STEP SIZE PREVENT
564 // ERRONEOUS EVALUATION OF PARABOLA MINIMUM
565 //---NEXT TWO LINES CAN BE OMITTED FOR HIGHER PRECISION MACHINES
f4b7cee4 566 //dp = (Double_t) max (TMath::Abs(p3-p2), TMath::Abs(p2-p1));
567 //if( TMath::Abs( p2-p0 ) > dp ) p0 = p2;
50d05d7b 568 param[k] = p0;
569 // Constrain paramiters
570 Int_t kpos = (k-1) % knParam;
571 switch( kpos ){
572 case 0 :
573 if( param[k] <= 20 ) param[k] = fMinPeak;
574 break;
575 case 1 :
f4b7cee4 576 if( TMath::Abs( param[k] - prm0[k] ) > 1.5 ) param[k] = prm0[k];
50d05d7b 577 break;
578 case 2 :
f4b7cee4 579 if( TMath::Abs( param[k] - prm0[k] ) > 1. ) param[k] = prm0[k];
50d05d7b 580 break;
581 case 3 :
582 if( param[k] < .5 ) param[k] = .5;
583 break;
584 case 4 :
585 if( param[k] < .288 ) param[k] = .288; // 1/sqrt(12) = 0.288
586 if( param[k] > zdim*.5 ) param[k] = zdim*.5;
587 break;
588 }; // end switch
589 PeakFunc( xdim, zdim, param, speFit );
590 chisqt = ChiSqr( xdim, zdim, spe, speFit );
591 // DO NOT ALLOW ERRONEOUS INTERPOLATION
592 if( chisqt <= *chisqr ) *chisqr = chisqt;
593 else param[k] = prm0[k];
594 // OPTIMIZE SEARCH STEP FOR EVENTUAL NEXT CALL OF MINIM
595 steprm[k] = (param[k]-prm0[k])/5;
596 if( steprm[k] >= d1 ) steprm[k] = d1/5;
42da2935 597 } // end for k
598 // EVALUATE FIT AND CHI-SQUARED FOR OPTIMIZED PARAMETERS
599 PeakFunc( xdim, zdim, param, speFit );
600 *chisqr = ChiSqr( xdim, zdim, spe, speFit );
601 return;
a1f090e0 602}
42da2935 603//_________________________________________________________________________
604Int_t AliITSClusterFinderSDD::NoLinearFit( Int_t xdim, Int_t zdim,
aacedc3e 605 Double_t *param, Double_t *spe,
606 Int_t *niter, Double_t *chir ){
42da2935 607 // fit method from Comput. Phys. Commun 46(1987) 149
aacedc3e 608 const Double_t kchilmt = 0.01; // relative accuracy
50d05d7b 609 const Int_t knel = 3; // for parabolic minimization
610 const Int_t knstop = 50; // Max. iteration number
42da2935 611 const Int_t knParam = 5;
612 Int_t npeak = (Int_t)param[0];
613 // RETURN IF NUMBER OF DEGREES OF FREEDOM IS NOT POSITIVE
614 if( (xdim*zdim - npeak*knParam) <= 0 ) return( -1 );
aacedc3e 615 Double_t degFree = (xdim*zdim - npeak*knParam)-1;
42da2935 616 Int_t n, k, iterNum = 0;
aacedc3e 617 Double_t *prm0 = new Double_t[npeak*knParam+1];
618 Double_t *step = new Double_t[npeak*knParam+1];
619 Double_t *schi = new Double_t[npeak*knParam+1];
620 Double_t *sprm[3];
621 sprm[0] = new Double_t[npeak*knParam+1];
622 sprm[1] = new Double_t[npeak*knParam+1];
623 sprm[2] = new Double_t[npeak*knParam+1];
624 Double_t chi0, chi1, reldif, a, b, prmin, dp;
625 Double_t *speFit = new Double_t[ xdim*zdim ];
42da2935 626 PeakFunc( xdim, zdim, param, speFit );
627 chi0 = ChiSqr( xdim, zdim, spe, speFit );
628 chi1 = chi0;
629 for( k=1; k<(npeak*knParam+1); k++) prm0[k] = param[k];
50d05d7b 630 for( k=1 ; k<(npeak*knParam+1); k+=knParam ){
631 step[k] = param[k] / 20.0 ;
632 step[k+1] = param[k+1] / 50.0;
633 step[k+2] = param[k+2] / 50.0;
634 step[k+3] = param[k+3] / 20.0;
635 step[k+4] = param[k+4] / 20.0;
636 } // end for k
42da2935 637 Int_t out = 0;
638 do{
50d05d7b 639 iterNum++;
640 chi0 = chi1;
641 Minim( xdim, zdim, param, prm0, step, &chi1, spe, speFit );
f4b7cee4 642 reldif = ( chi1 > 0 ) ? ((Double_t) TMath::Abs( chi1-chi0)/chi1 ) : 0;
50d05d7b 643 // EXIT conditions
644 if( reldif < (float) kchilmt ){
645 *chir = (chi1>0) ? (float) TMath::Sqrt (chi1/degFree) :0;
646 *niter = iterNum;
647 out = 0;
648 break;
649 } // end if
650 if( (reldif < (float)(5*kchilmt)) && (iterNum > knstop) ){
651 *chir = (chi1>0) ?(float) TMath::Sqrt (chi1/degFree):0;
652 *niter = iterNum;
653 out = 0;
654 break;
655 } // end if
656 if( iterNum > 5*knstop ){
657 *chir = (chi1>0) ?(float) TMath::Sqrt (chi1/degFree):0;
658 *niter = iterNum;
659 out = 1;
660 break;
661 } // end if
662 if( iterNum <= knel ) continue;
663 n = iterNum - (iterNum/knel)*knel; // EXTRAPOLATION LIMIT COUNTER N
664 if( n > 3 || n == 0 ) continue;
665 schi[n-1] = chi1;
666 for( k=1; k<(npeak*knParam+1); k++ ) sprm[n-1][k] = param[k];
667 if( n != 3 ) continue;
668 // -EVALUATE EXTRAPOLATED VALUE OF EACH PARAMETER BY FINDING MINIMUM OF
669 // PARABOLA DEFINED BY LAST THREE CALLS OF MINIM
670 for( k=1; k<(npeak*knParam+1); k++ ){
aacedc3e 671 Double_t tmp0 = sprm[0][k];
672 Double_t tmp1 = sprm[1][k];
673 Double_t tmp2 = sprm[2][k];
50d05d7b 674 a = schi[0]*(tmp1-tmp2) + schi[1]*(tmp2-tmp0);
675 a += (schi[2]*(tmp0-tmp1));
676 b = schi[0]*(tmp1*tmp1-tmp2*tmp2);
677 b += (schi[1]*(tmp2*tmp2-tmp0*tmp0)+(schi[2]*
678 (tmp0*tmp0-tmp1*tmp1)));
679 if ((double)a < 1.0E-6) prmin = 0;
680 else prmin = (float) (0.5*b/a);
681 dp = 5*(tmp2-tmp0);
f4b7cee4 682 if( TMath::Abs(prmin-tmp2) > TMath::Abs(dp) ) prmin = tmp2+dp;
50d05d7b 683 param[k] = prmin;
684 step[k] = dp/10; // OPTIMIZE SEARCH STEP
685 } // end for k
42da2935 686 } while( kTRUE );
687 delete [] prm0;
688 delete [] step;
689 delete [] schi;
690 delete [] sprm[0];
691 delete [] sprm[1];
692 delete [] sprm[2];
693 delete [] speFit;
694 return( out );
a1f090e0 695}
50d05d7b 696
42da2935 697//______________________________________________________________________
04366a57 698void AliITSClusterFinderSDD::ResolveClusters(){
42da2935 699 // The function to resolve clusters if the clusters overlapping exists
24a1c341 700 Int_t i;
42da2935 701 // get number of clusters for this module
aacedc3e 702 Int_t nofClusters = NClusters();
42da2935 703 nofClusters -= fNclusters;
aacedc3e 704 Int_t fNofMaps = GetSeg()->Npz();
42da2935 705 Int_t fNofAnodes = fNofMaps/2;
aacedc3e 706 //Int_t fMaxNofSamples = GetSeg()->Npx();
42da2935 707 Int_t dummy=0;
aacedc3e 708 Double_t fTimeStep = GetSeg()->Dpx( dummy );
709 Double_t fSddLength = GetSeg()->Dx();
aacedc3e 710 Double_t anodePitch = GetSeg()->Dpz( dummy );
fcf95fc7 711 Int_t electronics =GetResp(fModule)->GetElectronics(); // 1 = PASCAL, 2 = OLA
404c1c29 712 AliITSCalibrationSDD* cal = (AliITSCalibrationSDD*)GetResp(fModule);
0599a018 713 AliITSresponseSDD* res = (AliITSresponseSDD*)cal->GetResponse();
714 const char *option=res->ZeroSuppOption();
404c1c29 715
50d05d7b 716
42da2935 717 for( Int_t j=0; j<nofClusters; j++ ){
50d05d7b 718 // get cluster information
aacedc3e 719 AliITSRawClusterSDD *clusterJ=(AliITSRawClusterSDD*) Cluster(j);
50d05d7b 720 Int_t astart = clusterJ->Astart();
721 Int_t astop = clusterJ->Astop();
722 Int_t tstart = clusterJ->Tstartf();
723 Int_t tstop = clusterJ->Tstopf();
724 Int_t wing = (Int_t)clusterJ->W();
725 if( wing == 2 ){
726 astart += fNofAnodes;
727 astop += fNofAnodes;
728 } // end if
729 Int_t xdim = tstop-tstart+3;
730 Int_t zdim = astop-astart+3;
d86f531c 731 if( xdim > 50 || zdim > 30 ) {
04366a57 732 Warning("ResolveClusters","xdim: %d , zdim: %d ",xdim,zdim);
d86f531c 733 continue;
734 }
aacedc3e 735 Double_t *sp = new Double_t[ xdim*zdim+1 ];
736 memset( sp, 0, sizeof(Double_t)*(xdim*zdim+1) );
50d05d7b 737
738 // make a local map from cluster region
739 for( Int_t ianode=astart; ianode<=astop; ianode++ ){
740 for( Int_t itime=tstart; itime<=tstop; itime++ ){
0599a018 741 Double_t fadc = Map()->GetSignal( ianode, itime );
742 if(!((strstr(option,"1D")) || (strstr(option,"2D")))){
743 Double_t baseline=GetResp(fModule)->GetBaseline(ianode);
744 if( fadc > baseline ) fadc -= (Double_t)baseline;
745 else fadc = 0.;
746 }
50d05d7b 747 Int_t index = (itime-tstart+1)*zdim+(ianode-astart+1);
748 sp[index] = fadc;
749 } // time loop
750 } // anode loop
751
752 // search peaks on cluster
753 const Int_t kNp = 150;
754 Int_t peakX1[kNp];
755 Int_t peakZ1[kNp];
aacedc3e 756 Double_t peakAmp1[kNp];
50d05d7b 757 Int_t npeak = SearchPeak(sp,xdim,zdim,peakX1,peakZ1,peakAmp1,fMinPeak);
758
759 // if multiple peaks, split cluster
aacedc3e 760 if( npeak >= 1 ){
50d05d7b 761 // cout << "npeak " << npeak << endl;
762 // clusterJ->PrintInfo();
aacedc3e 763 Double_t *par = new Double_t[npeak*5+1];
764 par[0] = (Double_t)npeak;
48058160 765 // Initial parameters in cell dimentions
50d05d7b 766 Int_t k1 = 1;
767 for( i=0; i<npeak; i++ ){
768 par[k1] = peakAmp1[i];
769 par[k1+1] = peakX1[i]; // local time pos. [timebin]
770 par[k1+2] = peakZ1[i]; // local anode pos. [anodepitch]
aacedc3e 771 if( electronics == 1 ) par[k1+3] = 2.; // PASCAL
772 else if(electronics==2) par[k1+3] = 0.7;//tau [timebin] OLA
50d05d7b 773 par[k1+4] = .4; // sigma [anodepich]
aacedc3e 774 k1 += 5;
50d05d7b 775 } // end for i
776 Int_t niter;
aacedc3e 777 Double_t chir;
50d05d7b 778 NoLinearFit( xdim, zdim, par, sp, &niter, &chir );
aacedc3e 779 Double_t peakX[kNp];
780 Double_t peakZ[kNp];
781 Double_t sigma[kNp];
782 Double_t tau[kNp];
783 Double_t peakAmp[kNp];
784 Double_t integral[kNp];
50d05d7b 785 //get integrals => charge for each peak
786 PeakFunc( xdim, zdim, par, sp, integral );
787 k1 = 1;
788 for( i=0; i<npeak; i++ ){
789 peakAmp[i] = par[k1];
d86f531c 790 peakX[i] = par[k1+1];
791 peakZ[i] = par[k1+2];
792 tau[i] = par[k1+3];
793 sigma[i] = par[k1+4];
50d05d7b 794 k1+=5;
795 } // end for i
796 // calculate parameter for new clusters
797 for( i=0; i<npeak; i++ ){
798 AliITSRawClusterSDD clusterI( *clusterJ );
d86f531c 799
50d05d7b 800 Int_t newAnode = peakZ1[i]-1 + astart;
d86f531c 801
802 // Int_t newiTime = peakX1[i]-1 + tstart;
803 // Int_t shift = (Int_t)(fTimeCorr/fTimeStep + 0.5);
804 // if( newiTime > shift && newiTime < (fMaxNofSamples-shift) )
805 // shift = 0;
aacedc3e 806 // Int_t peakpos = Map()->GetHitIndex(newAnode,newiTime+shift );
d86f531c 807 // clusterI.SetPeakPos( peakpos );
808
50d05d7b 809 clusterI.SetPeakAmpl( peakAmp1[i] );
aacedc3e 810 Double_t newAnodef = peakZ[i] - 0.5 + astart;
811 Double_t newiTimef = peakX[i] - 1 + tstart;
50d05d7b 812 if( wing == 2 ) newAnodef -= fNofAnodes;
aacedc3e 813 Double_t anodePath = (newAnodef - fNofAnodes/2)*anodePitch;
50d05d7b 814 newiTimef *= fTimeStep;
815 if( newiTimef > fTimeCorr ) newiTimef -= fTimeCorr;
816 if( electronics == 1 ){
48058160 817 // newiTimef *= 0.999438; // PASCAL
818 // newiTimef += (6./fDriftSpeed - newiTimef/3000.);
50d05d7b 819 }else if( electronics == 2 )
820 newiTimef *= 0.99714; // OLA
d86f531c 821
822 Int_t timeBin = (Int_t)(newiTimef/fTimeStep+0.5);
aacedc3e 823 Int_t peakpos = Map()->GetHitIndex( newAnode, timeBin );
d86f531c 824 if( peakpos < 0 ) {
825 for( Int_t ii=0; ii<3; ii++ ) {
aacedc3e 826 peakpos = Map()->GetHitIndex( newAnode, timeBin+ii );
d86f531c 827 if( peakpos > 0 ) break;
aacedc3e 828 peakpos = Map()->GetHitIndex( newAnode, timeBin-ii );
d86f531c 829 if( peakpos > 0 ) break;
830 }
831 }
832
833 if( peakpos < 0 ) {
04366a57 834 //Warning("ResolveClusters",
aacedc3e 835 // "Digit not found for cluster");
f77f13c8 836 //if(AliDebugLevel()>=3) clusterI.PrintInfo();
d86f531c 837 continue;
838 }
404c1c29 839 clusterI.SetPeakPos( peakpos );
840 Float_t dp = cal->GetDriftPath(newiTimef,anodePath);
841 Double_t driftPath = fSddLength - (Double_t)dp;
aacedc3e 842 Double_t sign = ( wing == 1 ) ? -1. : 1.;
404c1c29 843 Double_t xcoord = driftPath*sign * 0.0001;
844 Double_t zcoord = anodePath * 0.0001;
845 CorrectPosition(zcoord,xcoord);
846 clusterI.SetX( xcoord );
847 clusterI.SetZ( zcoord );
50d05d7b 848 clusterI.SetAnode( newAnodef );
849 clusterI.SetTime( newiTimef );
850 clusterI.SetAsigma( sigma[i]*anodePitch );
851 clusterI.SetTsigma( tau[i]*fTimeStep );
852 clusterI.SetQ( integral[i] );
d86f531c 853
7d62fb64 854 fDetTypeRec->AddCluster( 1, &clusterI );
50d05d7b 855 } // end for i
aacedc3e 856 Clusters()->RemoveAt( j );
50d05d7b 857 delete [] par;
48058160 858 } else { // something odd
04366a57 859 Warning( "ResolveClusters",
aacedc3e 860 "--- Peak not found!!!! minpeak=%d ,cluster peak= %f"
861 " , module= %d",
862 fMinPeak, clusterJ->PeakAmpl(),GetModule());
d86f531c 863 clusterJ->PrintInfo();
04366a57 864 Warning( "ResolveClusters"," xdim= %d zdim= %d", xdim-2, zdim-2 );
50d05d7b 865 }
866 delete [] sp;
42da2935 867 } // cluster loop
aacedc3e 868 Clusters()->Compress();
869// Map()->ClearMap();
a1f090e0 870}
42da2935 871//________________________________________________________________________
872void AliITSClusterFinderSDD::GroupClusters(){
873 // group clusters
874 Int_t dummy=0;
aacedc3e 875 Double_t fTimeStep = GetSeg()->Dpx(dummy);
42da2935 876 // get number of clusters for this module
aacedc3e 877 Int_t nofClusters = NClusters();
42da2935 878 nofClusters -= fNclusters;
879 AliITSRawClusterSDD *clusterI;
880 AliITSRawClusterSDD *clusterJ;
881 Int_t *label = new Int_t [nofClusters];
882 Int_t i,j;
883 for(i=0; i<nofClusters; i++) label[i] = 0;
884 for(i=0; i<nofClusters; i++) {
50d05d7b 885 if(label[i] != 0) continue;
886 for(j=i+1; j<nofClusters; j++) {
887 if(label[j] != 0) continue;
aacedc3e 888 clusterI = (AliITSRawClusterSDD*) Cluster(i);
889 clusterJ = (AliITSRawClusterSDD*) Cluster(j);
50d05d7b 890 // 1.3 good
891 if(clusterI->T() < fTimeStep*60) fDAnode = 4.2; // TB 3.2
892 if(clusterI->T() < fTimeStep*10) fDAnode = 1.5; // TB 1.
893 Bool_t pair = clusterI->Brother(clusterJ,fDAnode,fDTime);
894 if(!pair) continue;
f77f13c8 895 if(AliDebugLevel()>=4){
aacedc3e 896 clusterI->PrintInfo();
897 clusterJ->PrintInfo();
f77f13c8 898 } // end if AliDebugLevel
50d05d7b 899 clusterI->Add(clusterJ);
900 label[j] = 1;
aacedc3e 901 Clusters()->RemoveAt(j);
50d05d7b 902 j=i; // <- Ernesto
903 } // J clusters
904 label[i] = 1;
42da2935 905 } // I clusters
aacedc3e 906 Clusters()->Compress();
42da2935 907
908 delete [] label;
909 return;
b0f5e3fc 910}
42da2935 911//________________________________________________________________________
912void AliITSClusterFinderSDD::SelectClusters(){
913 // get number of clusters for this module
aacedc3e 914 Int_t nofClusters = NClusters();
b0f5e3fc 915
42da2935 916 nofClusters -= fNclusters;
917 Int_t i;
918 for(i=0; i<nofClusters; i++) {
aacedc3e 919 AliITSRawClusterSDD *clusterI =(AliITSRawClusterSDD*) Cluster(i);
50d05d7b 920 Int_t rmflg = 0;
aacedc3e 921 Double_t wy = 0.;
50d05d7b 922 if(clusterI->Anodes() != 0.) {
aacedc3e 923 wy = ((Double_t) clusterI->Samples())/clusterI->Anodes();
50d05d7b 924 } // end if
925 Int_t amp = (Int_t) clusterI->PeakAmpl();
926 Int_t cha = (Int_t) clusterI->Q();
927 if(amp < fMinPeak) rmflg = 1;
928 if(cha < fMinCharge) rmflg = 1;
929 if(wy < fMinNCells) rmflg = 1;
930 //if(wy > fMaxNCells) rmflg = 1;
aacedc3e 931 if(rmflg) Clusters()->RemoveAt(i);
42da2935 932 } // I clusters
aacedc3e 933 Clusters()->Compress();
42da2935 934 return;
b0f5e3fc 935}
42da2935 936
42da2935 937//______________________________________________________________________
938void AliITSClusterFinderSDD::GetRecPoints(){
939 // get rec points
04366a57 940
42da2935 941 // get number of clusters for this module
aacedc3e 942 Int_t nofClusters = NClusters();
42da2935 943 nofClusters -= fNclusters;
aacedc3e 944 const Double_t kconvGeV = 1.e-6; // GeV -> KeV
945 const Double_t kconv = 1.0e-4;
946 const Double_t kRMSx = 38.0*kconv; // microns->cm ITS TDR Table 1.3
947 const Double_t kRMSz = 28.0*kconv; // microns->cm ITS TDR Table 1.3
d86f531c 948 Int_t i;
42da2935 949 Int_t ix, iz, idx=-1;
950 AliITSdigitSDD *dig=0;
aacedc3e 951 Int_t ndigits=NDigits();
00a7cc50 952
953 Int_t lay,lad,det;
954 fDetTypeRec->GetITSgeom()->GetModuleId(fModule,lay,lad,det);
955 Int_t ind=(lad-1)*fDetTypeRec->GetITSgeom()->GetNdetectors(lay)+(det-1);
956 Int_t lyr=(lay-1);
957
958
42da2935 959 for(i=0; i<nofClusters; i++) {
aacedc3e 960 AliITSRawClusterSDD *clusterI = (AliITSRawClusterSDD*)Cluster(i);
50d05d7b 961 if(!clusterI) Error("SDD: GetRecPoints","i clusterI ",i,clusterI);
962 if(clusterI) idx=clusterI->PeakPos();
963 if(idx>ndigits) Error("SDD: GetRecPoints","idx ndigits",idx,ndigits);
964 // try peak neighbours - to be done
aacedc3e 965 if(idx&&idx<= ndigits) dig =(AliITSdigitSDD*)GetDigit(idx);
d86f531c 966 if(!dig) {
50d05d7b 967 // try cog
aacedc3e 968 GetSeg()->GetPadIxz(clusterI->X(),clusterI->Z(),ix,iz);
969 dig = (AliITSdigitSDD*)Map()->GetHit(iz-1,ix-1);
50d05d7b 970 // if null try neighbours
aacedc3e 971 if (!dig) dig = (AliITSdigitSDD*)Map()->GetHit(iz-1,ix);
972 if (!dig) dig = (AliITSdigitSDD*)Map()->GetHit(iz-1,ix+1);
50d05d7b 973 if (!dig) printf("SDD: cannot assign the track number!\n");
974 } // end if !dig
75fb37cc 975
976 Int_t lab[4] = {-3141593,-3141593,-3141593,ind};
977 if (dig) {
978 lab[0] = dig->GetTrack(0);
979 lab[1] = dig->GetTrack(1);
980 lab[2] = dig->GetTrack(2);
981 }
982 Float_t hit[5] = {clusterI->X(),clusterI->Z(),kRMSx*kRMSx,kRMSz*kRMSz,clusterI->Q()};
983 Int_t info[3] = {0,0,lyr};
984
985 AliITSRecPoint rnew(lab,hit,info,kTRUE);
50d05d7b 986 rnew.SetdEdX(kconvGeV*clusterI->Q());
d86f531c 987
7d62fb64 988 fDetTypeRec->AddRecPoint(rnew);
42da2935 989 } // I clusters
aacedc3e 990// Map()->ClearMap();
b0f5e3fc 991}
42da2935 992//______________________________________________________________________
993void AliITSClusterFinderSDD::FindRawClusters(Int_t mod){
994 // find raw clusters
50d05d7b 995
aacedc3e 996 SetModule(mod);
f45f6658 997 SetCutAmplitude(mod);
998 Int_t nanodes=GetSeg()->Npz();
999 Int_t noise=0;
1000 for(Int_t i=0;i<nanodes;i++){
1001 noise+=(Int_t)(((AliITSCalibrationSDD*)GetResp(mod))->GetNoiseAfterElectronics(i));
1002 }
1003 SetMinPeak((noise/nanodes)*5);
a1f090e0 1004 Find1DClustersE();
b0f5e3fc 1005 GroupClusters();
1006 SelectClusters();
04366a57 1007 ResolveClusters();
b0f5e3fc 1008 GetRecPoints();
1009}
42da2935 1010//_______________________________________________________________________
d2f55a22 1011void AliITSClusterFinderSDD::PrintStatus() const{
42da2935 1012 // Print SDD cluster finder Parameters
1013
1014 cout << "**************************************************" << endl;
1015 cout << " Silicon Drift Detector Cluster Finder Parameters " << endl;
1016 cout << "**************************************************" << endl;
1017 cout << "Number of Clusters: " << fNclusters << endl;
1018 cout << "Anode Tolerance: " << fDAnode << endl;
1019 cout << "Time Tolerance: " << fDTime << endl;
1020 cout << "Time correction (electronics): " << fTimeCorr << endl;
f45f6658 1021 cout << "Cut Amplitude (threshold): " << fCutAmplitude[0] << endl;
42da2935 1022 cout << "Minimum Amplitude: " << fMinPeak << endl;
1023 cout << "Minimum Charge: " << fMinCharge << endl;
1024 cout << "Minimum number of cells/clusters: " << fMinNCells << endl;
1025 cout << "Maximum number of cells/clusters: " << fMaxNCells << endl;
1026 cout << "**************************************************" << endl;
a1f090e0 1027}
404c1c29 1028
1029//_________________________________________________________________________
1030void AliITSClusterFinderSDD::CorrectPosition(Double_t &z, Double_t&y){
1031 //correction of coordinates using the maps stored in the DB
1032
1033 AliITSCalibrationSDD* cal = (AliITSCalibrationSDD*)GetResp(fModule);
1034 static const Int_t nbint = cal->GetMapTimeNBin();
1035 static const Int_t nbina = cal->Chips()*cal->Channels();
1036 Float_t stepa = (GetSeg()->Dpz(0))/10000.; //anode pitch in cm
1037 Float_t stept = (GetSeg()->Dx()/cal->GetMapTimeNBin()/2.)/10.;
1038
1039 Int_t bint = TMath::Abs((Int_t)(y/stept));
1040 if(y>=0) bint+=(Int_t)(nbint/2.);
1041 if(bint>nbint) AliError("Wrong bin number!");
1042
1043 Int_t bina = TMath::Abs((Int_t)(z/stepa));
1044 if(z>=0) bina+=(Int_t)(nbina/2.);
1045 if(bina>nbina) AliError("Wrong bin number!");
1046
1047 Double_t devz = (Double_t)cal->GetMapACell(bina,bint)/10000.;
1048 Double_t devx = (Double_t)cal->GetMapTCell(bina,bint)/10000.;
1049 z+=devz;
1050 y+=devx;
1051
1052}