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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 | 36 | ClassImp(AliITSClusterFinderSDD) |
37 | ||
aacedc3e | 38 | //______________________________________________________________________ |
39 | AliITSClusterFinderSDD::AliITSClusterFinderSDD(): | |
40 | AliITSClusterFinder(), | |
41 | fNclusters(0), | |
42 | fDAnode(0.0), | |
43 | fDTime(0.0), | |
44 | fTimeCorr(0.0), | |
45 | fCutAmplitude(0), | |
46 | fMinPeak(0), | |
47 | fMinCharge(0), | |
48 | fMinNCells(0), | |
49 | fMaxNCells(0){ | |
50 | // default constructor | |
51 | } | |
42da2935 | 52 | //______________________________________________________________________ |
8ba39da9 | 53 | AliITSClusterFinderSDD::AliITSClusterFinderSDD(AliITSDetTypeRec* dettyp, |
50d05d7b | 54 | TClonesArray *digits, |
aacedc3e | 55 | TClonesArray *recp): |
8ba39da9 | 56 | AliITSClusterFinder(dettyp), |
aacedc3e | 57 | fNclusters(0), |
58 | fDAnode(0.0), | |
59 | fDTime(0.0), | |
60 | fTimeCorr(0.0), | |
61 | fCutAmplitude(0), | |
62 | fMinPeak(0), | |
63 | fMinCharge(0), | |
64 | fMinNCells(0), | |
65 | fMaxNCells(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 | 81 | void 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 | //______________________________________________________________________ |
100 | void 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 | //______________________________________________________________________ |
251 | void 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 | 345 | Int_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 | 414 | void 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 | 463 | Double_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 | 477 | void 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 | //_________________________________________________________________________ |
598 | Int_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 | 692 | void 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 | //________________________________________________________________________ |
869 | void 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 | //________________________________________________________________________ |
909 | void 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 | 935 | void 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 | //______________________________________________________________________ |
999 | void 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 | 1018 | void 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 |