]> git.uio.no Git - u/mrichter/AliRoot.git/blame - ITS/AliITSClusterFinderSDD.cxx
git://git.uio.no / u / mrichter / AliRoot.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
In Open() and GotoEvent() try the ESD operations first, fallback to run-loader.
[u/mrichter/AliRoot.git] / ITS / AliITSClusterFinderSDD.cxx
CommitLineData
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
253e68a0 85 Bool_t isZeroSupp=GetResp(mod)->GetZeroSupp();
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);
253e68a0 90 if(isZeroSupp){
0599a018 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();
404c1c29 110 AliITSCalibrationSDD* cal = (AliITSCalibrationSDD*)GetResp(fModule);
253e68a0 111 Bool_t isZeroSupp=cal->GetZeroSupp();
0599a018 112
42da2935 113 // map the signal
aacedc3e 114 Map()->ClearMap();
f45f6658 115 Map()->SetThresholdArr(fCutAmplitude);
116 Map()->FillMap2();
a1f090e0 117
42da2935 118 Int_t nofFoundClusters = 0;
119 Int_t i;
aacedc3e 120 Double_t **dfadc = new Double_t*[fNofAnodes];
121 for(i=0;i<fNofAnodes;i++) dfadc[i] = new Double_t[fMaxNofSamples];
122 Double_t fadc = 0.;
123 Double_t fadc1 = 0.;
124 Double_t fadc2 = 0.;
42da2935 125 Int_t j,k,idx,l,m;
126 for(j=0;j<2;j++) {
50d05d7b 127 for(k=0;k<fNofAnodes;k++) {
128 idx = j*fNofAnodes+k;
129 // signal (fadc) & derivative (dfadc)
130 dfadc[k][255]=0.;
131 for(l=0; l<fMaxNofSamples; l++) {
aacedc3e 132 fadc2=(Double_t)Map()->GetSignal(idx,l);
133 if(l>0) fadc1=(Double_t)Map()->GetSignal(idx,l-1);
50d05d7b 134 if(l>0) dfadc[k][l-1] = fadc2-fadc1;
135 } // samples
136 } // anodes
42da2935 137
50d05d7b 138 for(k=0;k<fNofAnodes;k++) {
f77f13c8 139 AliDebug(5,Form("Anode: %d, Wing: %d",k+1,j+1));
50d05d7b 140 idx = j*fNofAnodes+k;
141 Int_t imax = 0;
142 Int_t imaxd = 0;
143 Int_t it = 0;
144 while(it <= fMaxNofSamples-3) {
145 imax = it;
146 imaxd = it;
147 // maximum of signal
aacedc3e 148 Double_t fadcmax = 0.;
149 Double_t dfadcmax = 0.;
50d05d7b 150 Int_t lthrmina = 1;
151 Int_t lthrmint = 3;
152 Int_t lthra = 1;
153 Int_t lthrt = 0;
154 for(m=0;m<20;m++) {
155 Int_t id = it+m;
156 if(id>=fMaxNofSamples) break;
aacedc3e 157 fadc=(float)Map()->GetSignal(idx,id);
50d05d7b 158 if(fadc > fadcmax) { fadcmax = fadc; imax = id;}
f45f6658 159 if(fadc > (float)fCutAmplitude[idx])lthrt++;
50d05d7b 160 if(dfadc[k][id] > dfadcmax) {
161 dfadcmax = dfadc[k][id];
162 imaxd = id;
163 } // end if
164 } // end for m
165 it = imaxd;
aacedc3e 166 if(Map()->TestHit(idx,imax) == kEmpty) {it++; continue;}
50d05d7b 167 // cluster charge
168 Int_t tstart = it-2;
169 if(tstart < 0) tstart = 0;
170 Bool_t ilcl = 0;
171 if(lthrt >= lthrmint && lthra >= lthrmina) ilcl = 1;
172 if(ilcl) {
173 nofFoundClusters++;
174 Int_t tstop = tstart;
aacedc3e 175 Double_t dfadcmin = 10000.;
50d05d7b 176 Int_t ij;
177 for(ij=0; ij<20; ij++) {
178 if(tstart+ij > 255) { tstop = 255; break; }
aacedc3e 179 fadc=(float)Map()->GetSignal(idx,tstart+ij);
50d05d7b 180 if((dfadc[k][tstart+ij] < dfadcmin) &&
f45f6658 181 (fadc > fCutAmplitude[idx])) {
50d05d7b 182 tstop = tstart+ij+5;
183 if(tstop > 255) tstop = 255;
184 dfadcmin = dfadc[k][it+ij];
185 } // end if
186 } // end for ij
42da2935 187
aacedc3e 188 Double_t clusterCharge = 0.;
189 Double_t clusterAnode = k+0.5;
190 Double_t clusterTime = 0.;
50d05d7b 191 Int_t clusterMult = 0;
aacedc3e 192 Double_t clusterPeakAmplitude = 0.;
50d05d7b 193 Int_t its,peakpos = -1;
0599a018 194
f45f6658 195 for(its=tstart; its<=tstop; its++) {
aacedc3e 196 fadc=(float)Map()->GetSignal(idx,its);
253e68a0 197 if(!isZeroSupp){
0599a018 198 Double_t baseline=GetResp(fModule)->GetBaseline(idx);
199 if(fadc>baseline) fadc -= baseline;
200 else fadc = 0.;
201 }
50d05d7b 202 clusterCharge += fadc;
203 // as a matter of fact we should take the peak
204 // pos before FFT
205 // to get the list of tracks !!!
206 if(fadc > clusterPeakAmplitude) {
207 clusterPeakAmplitude = fadc;
aacedc3e 208 //peakpos=Map()->GetHitIndex(idx,its);
50d05d7b 209 Int_t shift = (int)(fTimeCorr/fTimeStep);
210 if(its>shift && its<(fMaxNofSamples-shift))
aacedc3e 211 peakpos = Map()->GetHitIndex(idx,its+shift);
212 else peakpos = Map()->GetHitIndex(idx,its);
213 if(peakpos<0) peakpos =Map()->GetHitIndex(idx,its);
50d05d7b 214 } // end if
215 clusterTime += fadc*its;
216 if(fadc > 0) clusterMult++;
217 if(its == tstop) {
218 clusterTime /= (clusterCharge/fTimeStep); // ns
219 if(clusterTime>fTimeCorr) clusterTime -=fTimeCorr;
220 //ns
221 } // end if
222 } // end for its
f6b6d58e 223 Float_t theAnode=clusterAnode+j*fNofAnodes;
224 Double_t clusteranodePath = GetSeg()->GetLocalZFromAnode(theAnode);
404c1c29 225 Double_t clusterDriftPath = (Double_t)cal->GetDriftPath(clusterTime,clusteranodePath);
50d05d7b 226 clusterDriftPath = fSddLength-clusterDriftPath;
227 if(clusterCharge <= 0.) break;
228 AliITSRawClusterSDD clust(j+1,//i
229 clusterAnode,clusterTime,//ff
230 clusterCharge, //f
231 clusterPeakAmplitude, //f
232 peakpos, //i
233 0.,0.,clusterDriftPath,//fff
234 clusteranodePath, //f
235 clusterMult, //i
236 0,0,0,0,0,0,0);//7*i
7d62fb64 237 fDetTypeRec->AddCluster(1,&clust);
50d05d7b 238 it = tstop;
239 } // ilcl
240 it++;
241 } // while (samples)
242 } // anodes
42da2935 243 } // detectors (2)
42da2935 244
245 for(i=0;i<fNofAnodes;i++) delete[] dfadc[i];
246 delete [] dfadc;
a1f090e0 247
42da2935 248 return;
a1f090e0 249}
42da2935 250//______________________________________________________________________
251void AliITSClusterFinderSDD::Find1DClustersE(){
24a1c341 252 // find 1D clusters
42da2935 253 // retrieve the parameters
aacedc3e 254 Int_t fNofMaps = GetSeg()->Npz();
255 Int_t fMaxNofSamples = GetSeg()->Npx();
42da2935 256 Int_t fNofAnodes = fNofMaps/2;
257 Int_t dummy=0;
aacedc3e 258 Double_t fTimeStep = GetSeg()->Dpx( dummy );
259 Double_t fSddLength = GetSeg()->Dx();
404c1c29 260 AliITSCalibrationSDD* cal = (AliITSCalibrationSDD*)GetResp(fModule);
aacedc3e 261 Map()->ClearMap();
f45f6658 262 Map()->SetThresholdArr( fCutAmplitude );
263 Map()->FillMap2();
253e68a0 264 Bool_t isZeroSupp=cal->GetZeroSupp();
0599a018 265
42da2935 266 Int_t nClu = 0;
50d05d7b 267 // cout << "Search cluster... "<< endl;
42da2935 268 for( Int_t j=0; j<2; j++ ){
50d05d7b 269 for( Int_t k=0; k<fNofAnodes; k++ ){
0599a018 270 Int_t idx = j*fNofAnodes+k;
50d05d7b 271 Bool_t on = kFALSE;
272 Int_t start = 0;
273 Int_t nTsteps = 0;
aacedc3e 274 Double_t fmax = 0.;
50d05d7b 275 Int_t lmax = 0;
aacedc3e 276 Double_t charge = 0.;
277 Double_t time = 0.;
278 Double_t anode = k+0.5;
50d05d7b 279 Int_t peakpos = -1;
280 for( Int_t l=0; l<fMaxNofSamples; l++ ){
aacedc3e 281 Double_t fadc = (Double_t)Map()->GetSignal( idx, l );
50d05d7b 282 if( fadc > 0.0 ){
283 if( on == kFALSE && l<fMaxNofSamples-4){
284 // star RawCluster (reset var.)
aacedc3e 285 Double_t fadc1 = (Double_t)Map()->GetSignal( idx, l+1 );
50d05d7b 286 if( fadc1 < fadc ) continue;
287 start = l;
288 fmax = 0.;
289 lmax = 0;
290 time = 0.;
291 charge = 0.;
292 on = kTRUE;
293 nTsteps = 0;
294 } // end if on...
295 nTsteps++ ;
253e68a0 296 if(!isZeroSupp){
0599a018 297 Double_t baseline=GetResp(fModule)->GetBaseline(idx);
298 if( fadc > baseline ) fadc -= baseline;
299 else fadc=0.;
300 }
50d05d7b 301 charge += fadc;
302 time += fadc*l;
303 if( fadc > fmax ){
304 fmax = fadc;
305 lmax = l;
306 Int_t shift = (Int_t)(fTimeCorr/fTimeStep + 0.5);
307 if( l > shift && l < (fMaxNofSamples-shift) )
aacedc3e 308 peakpos = Map()->GetHitIndex( idx, l+shift );
50d05d7b 309 else
aacedc3e 310 peakpos = Map()->GetHitIndex( idx, l );
311 if( peakpos < 0) peakpos = Map()->GetHitIndex(idx,l);
50d05d7b 312 } // end if fadc
313 }else{ // end fadc>0
314 if( on == kTRUE ){
315 if( nTsteps > 2 ){
316 // min # of timesteps for a RawCluster
317 // Found a RawCluster...
318 Int_t stop = l-1;
319 time /= (charge/fTimeStep); // ns
320 // time = lmax*fTimeStep; // ns
321 if( time > fTimeCorr ) time -= fTimeCorr; // ns
f6b6d58e 322 Float_t theAnode=anode+j*fNofAnodes;
323 Double_t anodePath =GetSeg()->GetLocalZFromAnode(theAnode);
4952f440 324 Double_t driftPath = (Double_t)cal->GetDriftPath(time,anode);
50d05d7b 325 driftPath = fSddLength-driftPath;
326 AliITSRawClusterSDD clust(j+1,anode,time,charge,
327 fmax, peakpos,0.,0.,
328 driftPath,anodePath,
329 nTsteps,start,stop,
330 start, stop, 1, k, k );
7d62fb64 331 fDetTypeRec->AddCluster( 1, &clust );
f77f13c8 332 if(AliDebugLevel()>=5) clust.PrintInfo();
50d05d7b 333 nClu++;
334 } // end if nTsteps
335 on = kFALSE;
336 } // end if on==kTRUE
337 } // end if fadc>0
338 } // samples
339 } // anodes
42da2935 340 } // wings
f77f13c8 341 AliDebug(3,Form("# Rawclusters %d",nClu));
42da2935 342 return;
a1f090e0 343}
42da2935 344//_______________________________________________________________________
aacedc3e 345Int_t AliITSClusterFinderSDD::SearchPeak(Double_t *spect,Int_t xdim,Int_t zdim,
50d05d7b 346 Int_t *peakX, Int_t *peakZ,
aacedc3e 347 Double_t *peakAmp, Double_t minpeak ){
42da2935 348 // search peaks on a 2D cluster
349 Int_t npeak = 0; // # peaks
56fff130 350 Int_t i,j;
42da2935 351 // search peaks
352 for( Int_t z=1; z<zdim-1; z++ ){
48058160 353 for( Int_t x=1; x<xdim-2; x++ ){
aacedc3e 354 Double_t sxz = spect[x*zdim+z];
355 Double_t sxz1 = spect[(x+1)*zdim+z];
356 Double_t sxz2 = spect[(x-1)*zdim+z];
50d05d7b 357 // search a local max. in s[x,z]
358 if( sxz < minpeak || sxz1 <= 0 || sxz2 <= 0 ) continue;
359 if( sxz >= spect[(x+1)*zdim+z ] && sxz >= spect[(x-1)*zdim+z ] &&
360 sxz >= spect[x*zdim +z+1] && sxz >= spect[x*zdim +z-1] &&
361 sxz >= spect[(x+1)*zdim+z+1] && sxz >= spect[(x+1)*zdim+z-1] &&
362 sxz >= spect[(x-1)*zdim+z+1] && sxz >= spect[(x-1)*zdim+z-1] ){
363 // peak found
364 peakX[npeak] = x;
365 peakZ[npeak] = z;
366 peakAmp[npeak] = sxz;
367 npeak++;
368 } // end if ....
369 } // end for x
42da2935 370 } // end for z
371 // search groups of peaks with same amplitude.
372 Int_t *flag = new Int_t[npeak];
373 for( i=0; i<npeak; i++ ) flag[i] = 0;
374 for( i=0; i<npeak; i++ ){
50d05d7b 375 for( j=0; j<npeak; j++ ){
376 if( i==j) continue;
377 if( flag[j] > 0 ) continue;
378 if( peakAmp[i] == peakAmp[j] &&
379 TMath::Abs(peakX[i]-peakX[j])<=1 &&
380 TMath::Abs(peakZ[i]-peakZ[j])<=1 ){
381 if( flag[i] == 0) flag[i] = i+1;
382 flag[j] = flag[i];
383 } // end if ...
384 } // end for j
42da2935 385 } // end for i
50d05d7b 386 // make average of peak groups
42da2935 387 for( i=0; i<npeak; i++ ){
50d05d7b 388 Int_t nFlag = 1;
389 if( flag[i] <= 0 ) continue;
390 for( j=0; j<npeak; j++ ){
391 if( i==j ) continue;
392 if( flag[j] != flag[i] ) continue;
393 peakX[i] += peakX[j];
394 peakZ[i] += peakZ[j];
395 nFlag++;
396 npeak--;
397 for( Int_t k=j; k<npeak; k++ ){
398 peakX[k] = peakX[k+1];
399 peakZ[k] = peakZ[k+1];
400 peakAmp[k] = peakAmp[k+1];
401 flag[k] = flag[k+1];
402 } // end for k
403 j--;
404 } // end for j
405 if( nFlag > 1 ){
406 peakX[i] /= nFlag;
407 peakZ[i] /= nFlag;
408 } // end fi nFlag
42da2935 409 } // end for i
410 delete [] flag;
411 return( npeak );
a1f090e0 412}
42da2935 413//______________________________________________________________________
aacedc3e 414void AliITSClusterFinderSDD::PeakFunc( Int_t xdim, Int_t zdim, Double_t *par,
415 Double_t *spe, Double_t *integral){
24a1c341 416 // function used to fit the clusters
50d05d7b 417 // par -> parameters..
24a1c341 418 // par[0] number of peaks.
419 // for each peak i=1, ..., par[0]
50d05d7b 420 // par[i] = Ampl.
421 // par[i+1] = xpos
422 // par[i+2] = zpos
423 // par[i+3] = tau
424 // par[i+4] = sigma.
cd2a0045 425 Int_t electronics = 1; // 1 = PASCAL, 2 = OLA
24a1c341 426 const Int_t knParam = 5;
427 Int_t npeak = (Int_t)par[0];
42da2935 428
aacedc3e 429 memset( spe, 0, sizeof( Double_t )*zdim*xdim );
42da2935 430
24a1c341 431 Int_t k = 1;
42da2935 432 for( Int_t i=0; i<npeak; i++ ){
24a1c341 433 if( integral != 0 ) integral[i] = 0.;
aacedc3e 434 Double_t sigmaA2 = par[k+4]*par[k+4]*2.;
435 Double_t t2 = par[k+3]; // PASCAL
bf3f2830 436 if( electronics == 2 ) { t2 *= t2; t2 *= 2; } // OLA
42da2935 437 for( Int_t z=0; z<zdim; z++ ){
438 for( Int_t x=0; x<xdim; x++ ){
aacedc3e 439 Double_t z2 = (z-par[k+2])*(z-par[k+2])/sigmaA2;
440 Double_t x2 = 0.;
441 Double_t signal = 0.;
42da2935 442 if( electronics == 1 ){ // PASCAL
bf3f2830 443 x2 = (x-par[k+1]+t2)/t2;
42da2935 444 signal = (x2>0.) ? par[k]*x2*exp(-x2+1.-z2) :0.0; // RCCR2
445 // signal =(x2>0.) ? par[k]*x2*x2*exp(-2*x2+2.-z2 ):0.0;//RCCR
446 }else if( electronics == 2 ) { // OLA
bf3f2830 447 x2 = (x-par[k+1])*(x-par[k+1])/t2;
50d05d7b 448 signal = par[k] * exp( -x2 - z2 );
449 } else {
aacedc3e 450 Warning("PeakFunc","Wrong SDD Electronics = %d",
451 electronics);
50d05d7b 452 // exit( 1 );
453 } // end if electronicx
24a1c341 454 spe[x*zdim+z] += signal;
455 if( integral != 0 ) integral[i] += signal;
42da2935 456 } // end for x
457 } // end for z
24a1c341 458 k += knParam;
42da2935 459 } // end for i
24a1c341 460 return;
a1f090e0 461}
42da2935 462//__________________________________________________________________________
aacedc3e 463Double_t AliITSClusterFinderSDD::ChiSqr( Int_t xdim, Int_t zdim, Double_t *spe,
464 Double_t *speFit ) const{
42da2935 465 // EVALUATES UNNORMALIZED CHI-SQUARED
aacedc3e 466 Double_t chi2 = 0.;
42da2935 467 for( Int_t z=0; z<zdim; z++ ){
50d05d7b 468 for( Int_t x=1; x<xdim-1; x++ ){
469 Int_t index = x*zdim+z;
aacedc3e 470 Double_t tmp = spe[index] - speFit[index];
50d05d7b 471 chi2 += tmp*tmp;
472 } // end for x
42da2935 473 } // end for z
474 return( chi2 );
a1f090e0 475}
42da2935 476//_______________________________________________________________________
aacedc3e 477void AliITSClusterFinderSDD::Minim( Int_t xdim, Int_t zdim, Double_t *param,
478 Double_t *prm0,Double_t *steprm,
479 Double_t *chisqr,Double_t *spe,
480 Double_t *speFit ){
42da2935 481 //
482 Int_t k, nnn, mmm, i;
aacedc3e 483 Double_t p1, delta, d1, chisq1, p2, chisq2, t, p3, chisq3, a, b, p0, chisqt;
42da2935 484 const Int_t knParam = 5;
485 Int_t npeak = (Int_t)param[0];
486 for( k=1; k<(npeak*knParam+1); k++ ) prm0[k] = param[k];
487 for( k=1; k<(npeak*knParam+1); k++ ){
50d05d7b 488 p1 = param[k];
489 delta = steprm[k];
490 d1 = delta;
491 // ENSURE THAT STEP SIZE IS SENSIBLY LARGER THAN MACHINE ROUND OFF
f4b7cee4 492 if( TMath::Abs( p1 ) > 1.0E-6 )
493 if ( TMath::Abs( delta/p1 ) < 1.0E-4 ) delta = p1/1000;
aacedc3e 494 else delta = (Double_t)1.0E-4;
50d05d7b 495 // EVALUATE CHI-SQUARED AT FIRST TWO SEARCH POINTS
496 PeakFunc( xdim, zdim, param, speFit );
497 chisq1 = ChiSqr( xdim, zdim, spe, speFit );
498 p2 = p1+delta;
499 param[k] = p2;
500 PeakFunc( xdim, zdim, param, speFit );
501 chisq2 = ChiSqr( xdim, zdim, spe, speFit );
502 if( chisq1 < chisq2 ){
503 // REVERSE DIRECTION OF SEARCH IF CHI-SQUARED IS INCREASING
504 delta = -delta;
505 t = p1;
506 p1 = p2;
507 p2 = t;
508 t = chisq1;
509 chisq1 = chisq2;
510 chisq2 = t;
511 } // end if
512 i = 1; nnn = 0;
513 do { // INCREMENT param(K) UNTIL CHI-SQUARED STARTS TO INCREASE
514 nnn++;
515 p3 = p2 + delta;
516 mmm = nnn - (nnn/5)*5; // multiplo de 5
517 if( mmm == 0 ){
518 d1 = delta;
519 // INCREASE STEP SIZE IF STEPPING TOWARDS MINIMUM IS TOO SLOW
520 delta *= 5;
521 } // end if
522 param[k] = p3;
523 // Constrain paramiters
524 Int_t kpos = (k-1) % knParam;
525 switch( kpos ){
526 case 0 :
527 if( param[k] <= 20 ) param[k] = fMinPeak;
528 break;
529 case 1 :
f4b7cee4 530 if( TMath::Abs( param[k] - prm0[k] ) > 1.5 ) param[k] = prm0[k];
50d05d7b 531 break;
532 case 2 :
f4b7cee4 533 if( TMath::Abs( param[k] - prm0[k] ) > 1. ) param[k] = prm0[k];
50d05d7b 534 break;
535 case 3 :
536 if( param[k] < .5 ) param[k] = .5;
537 break;
538 case 4 :
aacedc3e 539 if( param[k] < .288 ) param[k] = .288;// 1/sqrt(12) = 0.288
50d05d7b 540 if( param[k] > zdim*.5 ) param[k] = zdim*.5;
541 break;
542 }; // end switch
543 PeakFunc( xdim, zdim, param, speFit );
544 chisq3 = ChiSqr( xdim, zdim, spe, speFit );
545 if( chisq3 < chisq2 && nnn < 50 ){
546 p1 = p2;
547 p2 = p3;
548 chisq1 = chisq2;
549 chisq2 = chisq3;
550 }else i=0;
551 } while( i );
552 // FIND MINIMUM OF PARABOLA DEFINED BY LAST THREE POINTS
553 a = chisq1*(p2-p3)+chisq2*(p3-p1)+chisq3*(p1-p2);
554 b = chisq1*(p2*p2-p3*p3)+chisq2*(p3*p3-p1*p1)+chisq3*(p1*p1-p2*p2);
aacedc3e 555 if( a!=0 ) p0 = (Double_t)(0.5*b/a);
50d05d7b 556 else p0 = 10000;
557 //--IN CASE OF NEARLY EQUAL CHI-SQUARED AND TOO SMALL STEP SIZE PREVENT
558 // ERRONEOUS EVALUATION OF PARABOLA MINIMUM
559 //---NEXT TWO LINES CAN BE OMITTED FOR HIGHER PRECISION MACHINES
f4b7cee4 560 //dp = (Double_t) max (TMath::Abs(p3-p2), TMath::Abs(p2-p1));
561 //if( TMath::Abs( p2-p0 ) > dp ) p0 = p2;
50d05d7b 562 param[k] = p0;
563 // Constrain paramiters
564 Int_t kpos = (k-1) % knParam;
565 switch( kpos ){
566 case 0 :
567 if( param[k] <= 20 ) param[k] = fMinPeak;
568 break;
569 case 1 :
f4b7cee4 570 if( TMath::Abs( param[k] - prm0[k] ) > 1.5 ) param[k] = prm0[k];
50d05d7b 571 break;
572 case 2 :
f4b7cee4 573 if( TMath::Abs( param[k] - prm0[k] ) > 1. ) param[k] = prm0[k];
50d05d7b 574 break;
575 case 3 :
576 if( param[k] < .5 ) param[k] = .5;
577 break;
578 case 4 :
579 if( param[k] < .288 ) param[k] = .288; // 1/sqrt(12) = 0.288
580 if( param[k] > zdim*.5 ) param[k] = zdim*.5;
581 break;
582 }; // end switch
583 PeakFunc( xdim, zdim, param, speFit );
584 chisqt = ChiSqr( xdim, zdim, spe, speFit );
585 // DO NOT ALLOW ERRONEOUS INTERPOLATION
586 if( chisqt <= *chisqr ) *chisqr = chisqt;
587 else param[k] = prm0[k];
588 // OPTIMIZE SEARCH STEP FOR EVENTUAL NEXT CALL OF MINIM
589 steprm[k] = (param[k]-prm0[k])/5;
590 if( steprm[k] >= d1 ) steprm[k] = d1/5;
42da2935 591 } // end for k
592 // EVALUATE FIT AND CHI-SQUARED FOR OPTIMIZED PARAMETERS
593 PeakFunc( xdim, zdim, param, speFit );
594 *chisqr = ChiSqr( xdim, zdim, spe, speFit );
595 return;
a1f090e0 596}
42da2935 597//_________________________________________________________________________
598Int_t AliITSClusterFinderSDD::NoLinearFit( Int_t xdim, Int_t zdim,
aacedc3e 599 Double_t *param, Double_t *spe,
600 Int_t *niter, Double_t *chir ){
42da2935 601 // fit method from Comput. Phys. Commun 46(1987) 149
aacedc3e 602 const Double_t kchilmt = 0.01; // relative accuracy
50d05d7b 603 const Int_t knel = 3; // for parabolic minimization
604 const Int_t knstop = 50; // Max. iteration number
42da2935 605 const Int_t knParam = 5;
606 Int_t npeak = (Int_t)param[0];
607 // RETURN IF NUMBER OF DEGREES OF FREEDOM IS NOT POSITIVE
608 if( (xdim*zdim - npeak*knParam) <= 0 ) return( -1 );
aacedc3e 609 Double_t degFree = (xdim*zdim - npeak*knParam)-1;
42da2935 610 Int_t n, k, iterNum = 0;
aacedc3e 611 Double_t *prm0 = new Double_t[npeak*knParam+1];
612 Double_t *step = new Double_t[npeak*knParam+1];
613 Double_t *schi = new Double_t[npeak*knParam+1];
614 Double_t *sprm[3];
615 sprm[0] = new Double_t[npeak*knParam+1];
616 sprm[1] = new Double_t[npeak*knParam+1];
617 sprm[2] = new Double_t[npeak*knParam+1];
618 Double_t chi0, chi1, reldif, a, b, prmin, dp;
619 Double_t *speFit = new Double_t[ xdim*zdim ];
42da2935 620 PeakFunc( xdim, zdim, param, speFit );
621 chi0 = ChiSqr( xdim, zdim, spe, speFit );
622 chi1 = chi0;
623 for( k=1; k<(npeak*knParam+1); k++) prm0[k] = param[k];
50d05d7b 624 for( k=1 ; k<(npeak*knParam+1); k+=knParam ){
625 step[k] = param[k] / 20.0 ;
626 step[k+1] = param[k+1] / 50.0;
627 step[k+2] = param[k+2] / 50.0;
628 step[k+3] = param[k+3] / 20.0;
629 step[k+4] = param[k+4] / 20.0;
630 } // end for k
42da2935 631 Int_t out = 0;
632 do{
50d05d7b 633 iterNum++;
634 chi0 = chi1;
635 Minim( xdim, zdim, param, prm0, step, &chi1, spe, speFit );
f4b7cee4 636 reldif = ( chi1 > 0 ) ? ((Double_t) TMath::Abs( chi1-chi0)/chi1 ) : 0;
50d05d7b 637 // EXIT conditions
638 if( reldif < (float) kchilmt ){
639 *chir = (chi1>0) ? (float) TMath::Sqrt (chi1/degFree) :0;
640 *niter = iterNum;
641 out = 0;
642 break;
643 } // end if
644 if( (reldif < (float)(5*kchilmt)) && (iterNum > knstop) ){
645 *chir = (chi1>0) ?(float) TMath::Sqrt (chi1/degFree):0;
646 *niter = iterNum;
647 out = 0;
648 break;
649 } // end if
650 if( iterNum > 5*knstop ){
651 *chir = (chi1>0) ?(float) TMath::Sqrt (chi1/degFree):0;
652 *niter = iterNum;
653 out = 1;
654 break;
655 } // end if
656 if( iterNum <= knel ) continue;
657 n = iterNum - (iterNum/knel)*knel; // EXTRAPOLATION LIMIT COUNTER N
658 if( n > 3 || n == 0 ) continue;
659 schi[n-1] = chi1;
660 for( k=1; k<(npeak*knParam+1); k++ ) sprm[n-1][k] = param[k];
661 if( n != 3 ) continue;
662 // -EVALUATE EXTRAPOLATED VALUE OF EACH PARAMETER BY FINDING MINIMUM OF
663 // PARABOLA DEFINED BY LAST THREE CALLS OF MINIM
664 for( k=1; k<(npeak*knParam+1); k++ ){
aacedc3e 665 Double_t tmp0 = sprm[0][k];
666 Double_t tmp1 = sprm[1][k];
667 Double_t tmp2 = sprm[2][k];
50d05d7b 668 a = schi[0]*(tmp1-tmp2) + schi[1]*(tmp2-tmp0);
669 a += (schi[2]*(tmp0-tmp1));
670 b = schi[0]*(tmp1*tmp1-tmp2*tmp2);
671 b += (schi[1]*(tmp2*tmp2-tmp0*tmp0)+(schi[2]*
672 (tmp0*tmp0-tmp1*tmp1)));
673 if ((double)a < 1.0E-6) prmin = 0;
674 else prmin = (float) (0.5*b/a);
675 dp = 5*(tmp2-tmp0);
f4b7cee4 676 if( TMath::Abs(prmin-tmp2) > TMath::Abs(dp) ) prmin = tmp2+dp;
50d05d7b 677 param[k] = prmin;
678 step[k] = dp/10; // OPTIMIZE SEARCH STEP
679 } // end for k
42da2935 680 } while( kTRUE );
681 delete [] prm0;
682 delete [] step;
683 delete [] schi;
684 delete [] sprm[0];
685 delete [] sprm[1];
686 delete [] sprm[2];
687 delete [] speFit;
688 return( out );
a1f090e0 689}
50d05d7b 690
42da2935 691//______________________________________________________________________
04366a57 692void AliITSClusterFinderSDD::ResolveClusters(){
42da2935 693 // The function to resolve clusters if the clusters overlapping exists
24a1c341 694 Int_t i;
42da2935 695 // get number of clusters for this module
aacedc3e 696 Int_t nofClusters = NClusters();
42da2935 697 nofClusters -= fNclusters;
aacedc3e 698 Int_t fNofMaps = GetSeg()->Npz();
42da2935 699 Int_t fNofAnodes = fNofMaps/2;
aacedc3e 700 //Int_t fMaxNofSamples = GetSeg()->Npx();
42da2935 701 Int_t dummy=0;
aacedc3e 702 Double_t fTimeStep = GetSeg()->Dpx( dummy );
703 Double_t fSddLength = GetSeg()->Dx();
aacedc3e 704 Double_t anodePitch = GetSeg()->Dpz( dummy );
cd2a0045 705 Int_t electronics =1;//GetResp(fModule)->GetElectronics(); // 1 = PASCAL, 2 = OLA
404c1c29 706 AliITSCalibrationSDD* cal = (AliITSCalibrationSDD*)GetResp(fModule);
253e68a0 707 Bool_t isZeroSupp=cal->GetZeroSupp();
708
404c1c29 709
50d05d7b 710
42da2935 711 for( Int_t j=0; j<nofClusters; j++ ){
50d05d7b 712 // get cluster information
aacedc3e 713 AliITSRawClusterSDD *clusterJ=(AliITSRawClusterSDD*) Cluster(j);
50d05d7b 714 Int_t astart = clusterJ->Astart();
715 Int_t astop = clusterJ->Astop();
716 Int_t tstart = clusterJ->Tstartf();
717 Int_t tstop = clusterJ->Tstopf();
718 Int_t wing = (Int_t)clusterJ->W();
719 if( wing == 2 ){
720 astart += fNofAnodes;
721 astop += fNofAnodes;
722 } // end if
723 Int_t xdim = tstop-tstart+3;
724 Int_t zdim = astop-astart+3;
d86f531c 725 if( xdim > 50 || zdim > 30 ) {
04366a57 726 Warning("ResolveClusters","xdim: %d , zdim: %d ",xdim,zdim);
d86f531c 727 continue;
728 }
aacedc3e 729 Double_t *sp = new Double_t[ xdim*zdim+1 ];
730 memset( sp, 0, sizeof(Double_t)*(xdim*zdim+1) );
50d05d7b 731
732 // make a local map from cluster region
733 for( Int_t ianode=astart; ianode<=astop; ianode++ ){
734 for( Int_t itime=tstart; itime<=tstop; itime++ ){
0599a018 735 Double_t fadc = Map()->GetSignal( ianode, itime );
253e68a0 736 if(!isZeroSupp){
0599a018 737 Double_t baseline=GetResp(fModule)->GetBaseline(ianode);
738 if( fadc > baseline ) fadc -= (Double_t)baseline;
739 else fadc = 0.;
740 }
50d05d7b 741 Int_t index = (itime-tstart+1)*zdim+(ianode-astart+1);
742 sp[index] = fadc;
743 } // time loop
744 } // anode loop
745
746 // search peaks on cluster
747 const Int_t kNp = 150;
748 Int_t peakX1[kNp];
749 Int_t peakZ1[kNp];
aacedc3e 750 Double_t peakAmp1[kNp];
50d05d7b 751 Int_t npeak = SearchPeak(sp,xdim,zdim,peakX1,peakZ1,peakAmp1,fMinPeak);
752
753 // if multiple peaks, split cluster
aacedc3e 754 if( npeak >= 1 ){
50d05d7b 755 // cout << "npeak " << npeak << endl;
756 // clusterJ->PrintInfo();
aacedc3e 757 Double_t *par = new Double_t[npeak*5+1];
758 par[0] = (Double_t)npeak;
48058160 759 // Initial parameters in cell dimentions
50d05d7b 760 Int_t k1 = 1;
761 for( i=0; i<npeak; i++ ){
762 par[k1] = peakAmp1[i];
763 par[k1+1] = peakX1[i]; // local time pos. [timebin]
764 par[k1+2] = peakZ1[i]; // local anode pos. [anodepitch]
aacedc3e 765 if( electronics == 1 ) par[k1+3] = 2.; // PASCAL
766 else if(electronics==2) par[k1+3] = 0.7;//tau [timebin] OLA
50d05d7b 767 par[k1+4] = .4; // sigma [anodepich]
aacedc3e 768 k1 += 5;
50d05d7b 769 } // end for i
770 Int_t niter;
aacedc3e 771 Double_t chir;
50d05d7b 772 NoLinearFit( xdim, zdim, par, sp, &niter, &chir );
aacedc3e 773 Double_t peakX[kNp];
774 Double_t peakZ[kNp];
775 Double_t sigma[kNp];
776 Double_t tau[kNp];
777 Double_t peakAmp[kNp];
778 Double_t integral[kNp];
50d05d7b 779 //get integrals => charge for each peak
780 PeakFunc( xdim, zdim, par, sp, integral );
781 k1 = 1;
782 for( i=0; i<npeak; i++ ){
783 peakAmp[i] = par[k1];
d86f531c 784 peakX[i] = par[k1+1];
785 peakZ[i] = par[k1+2];
786 tau[i] = par[k1+3];
787 sigma[i] = par[k1+4];
50d05d7b 788 k1+=5;
789 } // end for i
790 // calculate parameter for new clusters
791 for( i=0; i<npeak; i++ ){
792 AliITSRawClusterSDD clusterI( *clusterJ );
d86f531c 793
50d05d7b 794 Int_t newAnode = peakZ1[i]-1 + astart;
d86f531c 795
796 // Int_t newiTime = peakX1[i]-1 + tstart;
797 // Int_t shift = (Int_t)(fTimeCorr/fTimeStep + 0.5);
798 // if( newiTime > shift && newiTime < (fMaxNofSamples-shift) )
799 // shift = 0;
aacedc3e 800 // Int_t peakpos = Map()->GetHitIndex(newAnode,newiTime+shift );
d86f531c 801 // clusterI.SetPeakPos( peakpos );
802
50d05d7b 803 clusterI.SetPeakAmpl( peakAmp1[i] );
aacedc3e 804 Double_t newAnodef = peakZ[i] - 0.5 + astart;
805 Double_t newiTimef = peakX[i] - 1 + tstart;
50d05d7b 806 if( wing == 2 ) newAnodef -= fNofAnodes;
aacedc3e 807 Double_t anodePath = (newAnodef - fNofAnodes/2)*anodePitch;
50d05d7b 808 newiTimef *= fTimeStep;
809 if( newiTimef > fTimeCorr ) newiTimef -= fTimeCorr;
810 if( electronics == 1 ){
48058160 811 // newiTimef *= 0.999438; // PASCAL
812 // newiTimef += (6./fDriftSpeed - newiTimef/3000.);
50d05d7b 813 }else if( electronics == 2 )
814 newiTimef *= 0.99714; // OLA
d86f531c 815
816 Int_t timeBin = (Int_t)(newiTimef/fTimeStep+0.5);
aacedc3e 817 Int_t peakpos = Map()->GetHitIndex( newAnode, timeBin );
d86f531c 818 if( peakpos < 0 ) {
819 for( Int_t ii=0; ii<3; ii++ ) {
aacedc3e 820 peakpos = Map()->GetHitIndex( newAnode, timeBin+ii );
d86f531c 821 if( peakpos > 0 ) break;
aacedc3e 822 peakpos = Map()->GetHitIndex( newAnode, timeBin-ii );
d86f531c 823 if( peakpos > 0 ) break;
824 }
825 }
826
827 if( peakpos < 0 ) {
04366a57 828 //Warning("ResolveClusters",
aacedc3e 829 // "Digit not found for cluster");
f77f13c8 830 //if(AliDebugLevel()>=3) clusterI.PrintInfo();
d86f531c 831 continue;
832 }
404c1c29 833 clusterI.SetPeakPos( peakpos );
4952f440 834 Float_t dp = cal->GetDriftPath(newiTimef,newAnodef);
c9a38d3d 835 Float_t driftPath = fSddLength - (Double_t)dp;
836 Float_t sign = ( wing == 1 ) ? -1. : 1.;
837 Float_t xcoord = driftPath*sign * 0.0001;
838 Float_t zcoord = anodePath * 0.0001;
839 Float_t corrx=0, corrz=0;
840 cal->GetCorrections(zcoord,xcoord,corrz,corrx,GetSeg());
841 xcoord+=corrx;
842 zcoord+=corrz;
404c1c29 843 clusterI.SetX( xcoord );
844 clusterI.SetZ( zcoord );
50d05d7b 845 clusterI.SetAnode( newAnodef );
846 clusterI.SetTime( newiTimef );
847 clusterI.SetAsigma( sigma[i]*anodePitch );
848 clusterI.SetTsigma( tau[i]*fTimeStep );
849 clusterI.SetQ( integral[i] );
d86f531c 850
7d62fb64 851 fDetTypeRec->AddCluster( 1, &clusterI );
50d05d7b 852 } // end for i
aacedc3e 853 Clusters()->RemoveAt( j );
50d05d7b 854 delete [] par;
48058160 855 } else { // something odd
04366a57 856 Warning( "ResolveClusters",
aacedc3e 857 "--- Peak not found!!!! minpeak=%d ,cluster peak= %f"
858 " , module= %d",
859 fMinPeak, clusterJ->PeakAmpl(),GetModule());
d86f531c 860 clusterJ->PrintInfo();
04366a57 861 Warning( "ResolveClusters"," xdim= %d zdim= %d", xdim-2, zdim-2 );
50d05d7b 862 }
863 delete [] sp;
42da2935 864 } // cluster loop
aacedc3e 865 Clusters()->Compress();
866// Map()->ClearMap();
a1f090e0 867}
42da2935 868//________________________________________________________________________
869void AliITSClusterFinderSDD::GroupClusters(){
870 // group clusters
871 Int_t dummy=0;
aacedc3e 872 Double_t fTimeStep = GetSeg()->Dpx(dummy);
42da2935 873 // get number of clusters for this module
aacedc3e 874 Int_t nofClusters = NClusters();
42da2935 875 nofClusters -= fNclusters;
876 AliITSRawClusterSDD *clusterI;
877 AliITSRawClusterSDD *clusterJ;
878 Int_t *label = new Int_t [nofClusters];
879 Int_t i,j;
880 for(i=0; i<nofClusters; i++) label[i] = 0;
881 for(i=0; i<nofClusters; i++) {
50d05d7b 882 if(label[i] != 0) continue;
883 for(j=i+1; j<nofClusters; j++) {
884 if(label[j] != 0) continue;
aacedc3e 885 clusterI = (AliITSRawClusterSDD*) Cluster(i);
886 clusterJ = (AliITSRawClusterSDD*) Cluster(j);
50d05d7b 887 // 1.3 good
888 if(clusterI->T() < fTimeStep*60) fDAnode = 4.2; // TB 3.2
889 if(clusterI->T() < fTimeStep*10) fDAnode = 1.5; // TB 1.
890 Bool_t pair = clusterI->Brother(clusterJ,fDAnode,fDTime);
891 if(!pair) continue;
f77f13c8 892 if(AliDebugLevel()>=4){
aacedc3e 893 clusterI->PrintInfo();
894 clusterJ->PrintInfo();
f77f13c8 895 } // end if AliDebugLevel
50d05d7b 896 clusterI->Add(clusterJ);
897 label[j] = 1;
aacedc3e 898 Clusters()->RemoveAt(j);
50d05d7b 899 j=i; // <- Ernesto
900 } // J clusters
901 label[i] = 1;
42da2935 902 } // I clusters
aacedc3e 903 Clusters()->Compress();
42da2935 904
905 delete [] label;
906 return;
b0f5e3fc 907}
42da2935 908//________________________________________________________________________
909void AliITSClusterFinderSDD::SelectClusters(){
910 // get number of clusters for this module
aacedc3e 911 Int_t nofClusters = NClusters();
b0f5e3fc 912
42da2935 913 nofClusters -= fNclusters;
914 Int_t i;
915 for(i=0; i<nofClusters; i++) {
aacedc3e 916 AliITSRawClusterSDD *clusterI =(AliITSRawClusterSDD*) Cluster(i);
50d05d7b 917 Int_t rmflg = 0;
aacedc3e 918 Double_t wy = 0.;
50d05d7b 919 if(clusterI->Anodes() != 0.) {
aacedc3e 920 wy = ((Double_t) clusterI->Samples())/clusterI->Anodes();
50d05d7b 921 } // end if
922 Int_t amp = (Int_t) clusterI->PeakAmpl();
923 Int_t cha = (Int_t) clusterI->Q();
924 if(amp < fMinPeak) rmflg = 1;
925 if(cha < fMinCharge) rmflg = 1;
926 if(wy < fMinNCells) rmflg = 1;
927 //if(wy > fMaxNCells) rmflg = 1;
aacedc3e 928 if(rmflg) Clusters()->RemoveAt(i);
42da2935 929 } // I clusters
aacedc3e 930 Clusters()->Compress();
42da2935 931 return;
b0f5e3fc 932}
42da2935 933
42da2935 934//______________________________________________________________________
4952f440 935void AliITSClusterFinderSDD::GetRecPoints(AliITSCalibrationSDD* cal){
42da2935 936 // get rec points
04366a57 937
42da2935 938 // get number of clusters for this module
aacedc3e 939 Int_t nofClusters = NClusters();
42da2935 940 nofClusters -= fNclusters;
aacedc3e 941 const Double_t kconvGeV = 1.e-6; // GeV -> KeV
942 const Double_t kconv = 1.0e-4;
4952f440 943 const Double_t kcmToMicrons = 10000.;
aacedc3e 944 const Double_t kRMSx = 38.0*kconv; // microns->cm ITS TDR Table 1.3
945 const Double_t kRMSz = 28.0*kconv; // microns->cm ITS TDR Table 1.3
4952f440 946 Int_t nAnodes=GetSeg()->NpzHalf();
d86f531c 947 Int_t i;
42da2935 948 Int_t ix, iz, idx=-1;
949 AliITSdigitSDD *dig=0;
aacedc3e 950 Int_t ndigits=NDigits();
00a7cc50 951
952 Int_t lay,lad,det;
953 fDetTypeRec->GetITSgeom()->GetModuleId(fModule,lay,lad,det);
954 Int_t ind=(lad-1)*fDetTypeRec->GetITSgeom()->GetNdetectors(lay)+(det-1);
955 Int_t lyr=(lay-1);
956
957
42da2935 958 for(i=0; i<nofClusters; i++) {
aacedc3e 959 AliITSRawClusterSDD *clusterI = (AliITSRawClusterSDD*)Cluster(i);
50d05d7b 960 if(!clusterI) Error("SDD: GetRecPoints","i clusterI ",i,clusterI);
961 if(clusterI) idx=clusterI->PeakPos();
962 if(idx>ndigits) Error("SDD: GetRecPoints","idx ndigits",idx,ndigits);
963 // try peak neighbours - to be done
aacedc3e 964 if(idx&&idx<= ndigits) dig =(AliITSdigitSDD*)GetDigit(idx);
d86f531c 965 if(!dig) {
50d05d7b 966 // try cog
4952f440 967 Float_t xMicrons=clusterI->X()*kcmToMicrons;
968 Float_t zMicrons=clusterI->Z()*kcmToMicrons;
969 Float_t zAnode=zMicrons/GetSeg()->Dpz(0)+nAnodes/2;
970 Float_t driftSpeed=cal->GetDriftSpeedAtAnode(zAnode);
971 Float_t driftPath=GetSeg()->Dx()-TMath::Abs(xMicrons);
972 ix=1+(Int_t)(driftPath/driftSpeed/GetSeg()->Dpx(0));
973 iz=1+(Int_t)zAnode;
974 if(xMicrons>0) iz+=nAnodes;
aacedc3e 975 dig = (AliITSdigitSDD*)Map()->GetHit(iz-1,ix-1);
50d05d7b 976 // if null try neighbours
aacedc3e 977 if (!dig) dig = (AliITSdigitSDD*)Map()->GetHit(iz-1,ix);
978 if (!dig) dig = (AliITSdigitSDD*)Map()->GetHit(iz-1,ix+1);
50d05d7b 979 if (!dig) printf("SDD: cannot assign the track number!\n");
980 } // end if !dig
75fb37cc 981
982 Int_t lab[4] = {-3141593,-3141593,-3141593,ind};
983 if (dig) {
984 lab[0] = dig->GetTrack(0);
985 lab[1] = dig->GetTrack(1);
986 lab[2] = dig->GetTrack(2);
987 }
988 Float_t hit[5] = {clusterI->X(),clusterI->Z(),kRMSx*kRMSx,kRMSz*kRMSz,clusterI->Q()};
989 Int_t info[3] = {0,0,lyr};
990
991 AliITSRecPoint rnew(lab,hit,info,kTRUE);
50d05d7b 992 rnew.SetdEdX(kconvGeV*clusterI->Q());
d86f531c 993
7d62fb64 994 fDetTypeRec->AddRecPoint(rnew);
42da2935 995 } // I clusters
aacedc3e 996// Map()->ClearMap();
b0f5e3fc 997}
42da2935 998//______________________________________________________________________
999void AliITSClusterFinderSDD::FindRawClusters(Int_t mod){
1000 // find raw clusters
50d05d7b 1001
aacedc3e 1002 SetModule(mod);
f45f6658 1003 SetCutAmplitude(mod);
4952f440 1004 AliITSCalibrationSDD* cal = (AliITSCalibrationSDD*)GetResp(mod);
f45f6658 1005 Int_t nanodes=GetSeg()->Npz();
1006 Int_t noise=0;
1007 for(Int_t i=0;i<nanodes;i++){
4952f440 1008 noise+=(Int_t)cal->GetNoiseAfterElectronics(i);
f45f6658 1009 }
1010 SetMinPeak((noise/nanodes)*5);
a1f090e0 1011 Find1DClustersE();
b0f5e3fc 1012 GroupClusters();
1013 SelectClusters();
04366a57 1014 ResolveClusters();
4952f440 1015 GetRecPoints(cal);
b0f5e3fc 1016}
42da2935 1017//_______________________________________________________________________
d2f55a22 1018void AliITSClusterFinderSDD::PrintStatus() const{
42da2935 1019 // Print SDD cluster finder Parameters
1020
1021 cout << "**************************************************" << endl;
1022 cout << " Silicon Drift Detector Cluster Finder Parameters " << endl;
1023 cout << "**************************************************" << endl;
1024 cout << "Number of Clusters: " << fNclusters << endl;
1025 cout << "Anode Tolerance: " << fDAnode << endl;
1026 cout << "Time Tolerance: " << fDTime << endl;
1027 cout << "Time correction (electronics): " << fTimeCorr << endl;
f45f6658 1028 cout << "Cut Amplitude (threshold): " << fCutAmplitude[0] << endl;
42da2935 1029 cout << "Minimum Amplitude: " << fMinPeak << endl;
1030 cout << "Minimum Charge: " << fMinCharge << endl;
1031 cout << "Minimum number of cells/clusters: " << fMinNCells << endl;
1032 cout << "Maximum number of cells/clusters: " << fMaxNCells << endl;
1033 cout << "**************************************************" << endl;
a1f090e0 1034}
404c1c29 1035
404c1c29 1036