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[u/mrichter/AliRoot.git] / ITS / AliITSClusterFinderV2SDD.cxx
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04366a57 1/**************************************************************************
2 * Copyright(c) 1998-2003, 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 **************************************************************************/
15////////////////////////////////////////////////////////////////////////////
16// Implementation of the ITS clusterer V2 class //
17// //
18// Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch //
19// //
20///////////////////////////////////////////////////////////////////////////
21
22
04366a57 23
24#include "AliITSClusterFinderV2SDD.h"
00a7cc50 25#include "AliITSRecPoint.h"
7d62fb64 26#include "AliITSDetTypeRec.h"
04366a57 27#include "AliRawReader.h"
0599a018 28#include "AliITSRawStreamSDD.h"
5bfe44ce 29#include "AliITSCalibrationSDD.h"
30#include "AliITSDetTypeRec.h"
31#include "AliITSsegmentationSDD.h"
04366a57 32#include <TClonesArray.h>
04366a57 33#include "AliITSdigitSDD.h"
34
35ClassImp(AliITSClusterFinderV2SDD)
36
e56160b8 37AliITSClusterFinderV2SDD::AliITSClusterFinderV2SDD(AliITSDetTypeRec* dettyp):AliITSClusterFinderV2(dettyp),
38fNySDD(256),
39fNzSDD(256),
40fYpitchSDD(0.01825),
41fZpitchSDD(0.02940),
42fHwSDD(3.5085),
43fHlSDD(3.7632),
44fYoffSDD(0.0425){
04366a57 45
46 //Default constructor
47
04366a57 48
49}
50
51
52void AliITSClusterFinderV2SDD::FindRawClusters(Int_t mod){
53
54 //Find clusters V2
55 SetModule(mod);
56 FindClustersSDD(fDigits);
57
58}
59
60void AliITSClusterFinderV2SDD::FindClustersSDD(TClonesArray *digits) {
61 //------------------------------------------------------------
62 // Actual SDD cluster finder
63 //------------------------------------------------------------
64 Int_t kNzBins = fNzSDD + 2;
65 const Int_t kMAXBIN=kNzBins*(fNySDD+2);
66
67 AliBin *bins[2];
68 bins[0]=new AliBin[kMAXBIN];
69 bins[1]=new AliBin[kMAXBIN];
404c1c29 70 AliITSCalibrationSDD* cal = (AliITSCalibrationSDD*)GetResp(fModule);
0599a018 71 AliITSresponseSDD* res = (AliITSresponseSDD*)cal->GetResponse();
72 const char *option=res->ZeroSuppOption();
04366a57 73 AliITSdigitSDD *d=0;
74 Int_t i, ndigits=digits->GetEntriesFast();
75 for (i=0; i<ndigits; i++) {
76 d=(AliITSdigitSDD*)digits->UncheckedAt(i);
77 Int_t y=d->GetCoord2()+1; //y
78 Int_t z=d->GetCoord1()+1; //z
79 Int_t q=d->GetSignal();
0599a018 80 if(!((strstr(option,"1D")) || (strstr(option,"2D")))){
81 Float_t baseline = cal->GetBaseline(d->GetCoord1());
82 if(q>baseline) q-=(Int_t)baseline;
83 else q=0;
84 }
9e4d7193 85 if(q<cal->GetThresholdAnode(d->GetCoord1())) continue;
0599a018 86
404c1c29 87 //if (q<3) continue;
04366a57 88
89 if (z <= fNzSDD) {
90 bins[0][y*kNzBins+z].SetQ(q);
91 bins[0][y*kNzBins+z].SetMask(1);
92 bins[0][y*kNzBins+z].SetIndex(i);
93 } else {
94 z-=fNzSDD;
95 bins[1][y*kNzBins+z].SetQ(q);
96 bins[1][y*kNzBins+z].SetMask(1);
97 bins[1][y*kNzBins+z].SetIndex(i);
98 }
99 }
100
101 FindClustersSDD(bins, kMAXBIN, kNzBins, digits);
102
103 delete[] bins[0];
104 delete[] bins[1];
105
106}
107
108void AliITSClusterFinderV2SDD::
109FindClustersSDD(AliBin* bins[2], Int_t nMaxBin, Int_t nzBins,
110 TClonesArray *digits, TClonesArray *clusters) {
111 //------------------------------------------------------------
112 // Actual SDD cluster finder
113 //------------------------------------------------------------
404c1c29 114 AliITSCalibrationSDD* cal = (AliITSCalibrationSDD*)GetResp(fModule);
04366a57 115 Int_t ncl=0;
116 TClonesArray &cl=*clusters;
117 for (Int_t s=0; s<2; s++)
118 for (Int_t i=0; i<nMaxBin; i++) {
119 if (bins[s][i].IsUsed()) continue;
120 Int_t idx[32]; UInt_t msk[32]; Int_t npeaks=0;
121 FindPeaks(i, nzBins, bins[s], idx, msk, npeaks);
122
123 if (npeaks>30) continue;
124 if (npeaks==0) continue;
125
126 Int_t k,l;
127 for (k=0; k<npeaks-1; k++){//mark adjacent peaks
128 if (idx[k] < 0) continue; //this peak is already removed
129 for (l=k+1; l<npeaks; l++) {
130 if (idx[l] < 0) continue; //this peak is already removed
131 Int_t ki=idx[k]/nzBins, kj=idx[k] - ki*nzBins;
132 Int_t li=idx[l]/nzBins, lj=idx[l] - li*nzBins;
133 Int_t di=TMath::Abs(ki - li);
134 Int_t dj=TMath::Abs(kj - lj);
135 if (di>1 || dj>1) continue;
136 if (bins[s][idx[k]].GetQ() > bins[s][idx[l]].GetQ()) {
137 msk[l]=msk[k];
138 idx[l]*=-1;
139 } else {
140 msk[k]=msk[l];
141 idx[k]*=-1;
142 break;
143 }
144 }
145 }
146
147 for (k=0; k<npeaks; k++) {
148 MarkPeak(TMath::Abs(idx[k]), nzBins, bins[s], msk[k]);
149 }
150
151 for (k=0; k<npeaks; k++) {
152 if (idx[k] < 0) continue; //removed peak
75fb37cc 153 AliITSRecPoint c;
04366a57 154 MakeCluster(idx[k], nzBins, bins[s], msk[k], c);
155 //mi change
156 Int_t milab[10];
157 for (Int_t ilab=0;ilab<10;ilab++){
158 milab[ilab]=-2;
159 }
160 Int_t maxi=0,mini=0,maxj=0,minj=0;
161 //AliBin *bmax=&bins[s][idx[k]];
162 //Float_t max = TMath::Max(TMath::Abs(bmax->GetQ())/5.,3.);
163 Float_t max=3;
164 for (Int_t di=-2; di<=2;di++)
165 for (Int_t dj=-3;dj<=3;dj++){
166 Int_t index = idx[k]+di+dj*nzBins;
167 if (index<0) continue;
168 if (index>=nMaxBin) continue;
169 AliBin *b=&bins[s][index];
170 if (TMath::Abs(b->GetQ())>max){
171 if (di>maxi) maxi=di;
172 if (di<mini) mini=di;
173 if (dj>maxj) maxj=dj;
174 if (dj<minj) minj=dj;
175 //
176 if(digits) {
177 if (TMath::Abs(di)<2&&TMath::Abs(dj)<2){
178 AliITSdigitSDD* d=(AliITSdigitSDD*)digits->UncheckedAt(b->GetIndex());
179 for (Int_t itrack=0;itrack<10;itrack++){
180 Int_t track = (d->GetTracks())[itrack];
181 if (track>=0) {
182 AddLabel(milab, track);
183 }
184 }
185 }
186 }
187 }
188 }
189
190 /*
191 Float_t s2 = c.GetSigmaY2()/c.GetQ() - c.GetY()*c.GetY();
192 Float_t w=par->GetPadPitchWidth(sec);
193 c.SetSigmaY2(s2);
194 if (s2 != 0.) {
195 c.SetSigmaY2(c.GetSigmaY2()*0.108);
196 if (sec<par->GetNInnerSector()) c.SetSigmaY2(c.GetSigmaY2()*2.07);
197 }
198 s2 = c.GetSigmaZ2()/c.GetQ() - c.GetZ()*c.GetZ();
199 w=par->GetZWidth();
200 c.SetSigmaZ2(s2);
201
202 if (s2 != 0.) {
203 c.SetSigmaZ2(c.GetSigmaZ2()*0.169);
204 if (sec<par->GetNInnerSector()) c.SetSigmaZ2(c.GetSigmaZ2()*1.77);
205 }
206 */
207
04366a57 208 Float_t y=c.GetY(),z=c.GetZ(), q=c.GetQ();
209 y/=q; z/=q;
210 //
211 //Float_t s2 = c.GetSigmaY2()/c.GetQ() - y*y;
212 // c.SetSigmaY2(s2);
213 //s2 = c.GetSigmaZ2()/c.GetQ() - z*z;
214 //c.SetSigmaZ2(s2);
215 //
404c1c29 216
217 Float_t yyyy = y;
218 //y=(y-0.5)*fYpitchSDD;
219 //y-=fHwSDD;
220 //y-=fYoffSDD; //delay ?
221 //if (s) y=-y;
04366a57 222
223 z=(z-0.5)*fZpitchSDD;
224 z-=fHlSDD;
404c1c29 225 Float_t zdet = z;
226 // y=-(-y+fYshift[fModule]);
227 // z= -z+fZshift[fModule];
00a7cc50 228 // c.SetY(y);
229 // c.SetZ(z);
9e4d7193 230 Float_t timebin = GetSeg()->Dpx(0);
231 Float_t xdet = cal->GetDriftPath((yyyy-0.5)*timebin,0);
404c1c29 232 xdet=xdet/10000.-fHwSDD-fYoffSDD;
233 if (s) xdet=-xdet;
234
235 CorrectPosition(zdet,xdet);
236
237 y=-(-xdet+fYshift[fModule]);
238 z= -zdet+fZshift[fModule];
9acf2ecc 239
3a4139a2 240 q/=5.243; //to have MPV 1 MIP = 86.4 KeV --> this must go to calibr.
ecb9da3c 241 Float_t hit[5] = {y, z, 0.0030*0.0030, 0.0020*0.0020, q};
242 Int_t info[3] = {maxj-minj+1, maxi-mini+1, fNlayer[fModule]};
04366a57 243
0599a018 244 if (c.GetQ() < 20.) continue; //noise cluster
04366a57 245
246 if (digits) {
247 // AliBin *b=&bins[s][idx[k]];
248 // AliITSdigitSDD* d=(AliITSdigitSDD*)digits->UncheckedAt(b->GetIndex());
249 {
250 //Int_t lab[3];
251 //lab[0]=(d->GetTracks())[0];
252 //lab[1]=(d->GetTracks())[1];
253 //lab[2]=(d->GetTracks())[2];
254 //CheckLabels(lab);
255 CheckLabels2(milab);
04366a57 256 }
257 }
ecb9da3c 258 milab[3]=fNdet[fModule];
259
260 AliITSRecPoint cc(milab,hit,info);
261 cc.SetType(npeaks);
262
263 if(clusters) new (cl[ncl]) AliITSRecPoint(cc);
04366a57 264 else {
ecb9da3c 265 fDetTypeRec->AddRecPoint(cc);
04366a57 266 }
267 ncl++;
268 }
269 }
270}
271
272
273
274void AliITSClusterFinderV2SDD::RawdataToClusters(AliRawReader* rawReader,TClonesArray** clusters){
275 //------------------------------------------------------------
276 // This function creates ITS clusters from raw data
277 //------------------------------------------------------------
278 rawReader->Reset();
0599a018 279 AliITSRawStreamSDD inputSDD(rawReader);
04366a57 280 FindClustersSDD(&inputSDD,clusters);
281
282}
283
284void AliITSClusterFinderV2SDD::FindClustersSDD(AliITSRawStream* input,
285 TClonesArray** clusters)
286{
287 //------------------------------------------------------------
288 // Actual SDD cluster finder for raw data
289 //------------------------------------------------------------
290 Int_t nClustersSDD = 0;
291 Int_t kNzBins = fNzSDD + 2;
292 Int_t kMaxBin = kNzBins * (fNySDD+2);
d7d9347b 293 AliBin *binsSDDInit = new AliBin[kMaxBin];
294 AliBin *binsSDD1 = new AliBin[kMaxBin];
295 AliBin *binsSDD2 = new AliBin[kMaxBin];
04366a57 296 AliBin* bins[2] = {NULL, NULL};
297
298 // read raw data input stream
299 while (kTRUE) {
300 Bool_t next = input->Next();
301 if (!next || input->IsNewModule()) {
302 Int_t iModule = input->GetPrevModuleID();
303
304 // when all data from a module was read, search for clusters
305 if (bins[0]) {
00a7cc50 306 clusters[iModule] = new TClonesArray("AliITSRecPoint");
04366a57 307 fModule = iModule;
308 FindClustersSDD(bins, kMaxBin, kNzBins, NULL, clusters[iModule]);
309 Int_t nClusters = clusters[iModule]->GetEntriesFast();
310 nClustersSDD += nClusters;
a97b3678 311 bins[0] = bins[1] = NULL;
04366a57 312 }
313
314 if (!next) break;
d7d9347b 315 bins[0]=binsSDD1;
316 bins[1]=binsSDD2;
317 memcpy(binsSDD1,binsSDDInit,sizeof(AliBin)*kMaxBin);
318 memcpy(binsSDD2,binsSDDInit,sizeof(AliBin)*kMaxBin);
319
04366a57 320 }
321
322 // fill the current digit into the bins array
a97b3678 323 AliITSCalibrationSDD* cal = (AliITSCalibrationSDD*)GetResp(input->GetModuleID());
324 AliITSresponseSDD* res = (AliITSresponseSDD*)cal->GetResponse();
325 const char *option=res->ZeroSuppOption();
326 Int_t q=input->GetSignal();
327 if(!((strstr(option,"1D")) || (strstr(option,"2D")))){
328 Float_t baseline = cal->GetBaseline(input->GetCoord1());
329 if(q>baseline) q-=(Int_t)baseline;
330 else q=0;
331 }
332 if(q>=cal->GetThresholdAnode(input->GetCoord1())) {
04366a57 333 Int_t iz = input->GetCoord1()+1;
a97b3678 334 //Int_t side = ((iz <= fNzSDD) ? 0 : 1);
335 Int_t side = ((AliITSRawStreamSDD*)input)->GetChannel();
336 // iz -= side*fNzSDD;
04366a57 337 Int_t index = (input->GetCoord2()+1) * kNzBins + iz;
a97b3678 338 bins[side][index].SetQ(q);
04366a57 339 bins[side][index].SetMask(1);
340 bins[side][index].SetIndex(index);
341 }
342 }
d7d9347b 343 delete[] binsSDD1;
344 delete[] binsSDD2;
345 delete[] binsSDDInit;
04366a57 346
347 Info("FindClustersSDD", "found clusters in ITS SDD: %d", nClustersSDD);
04366a57 348}
349
350
5bfe44ce 351//_________________________________________________________________________
352void AliITSClusterFinderV2SDD::CorrectPosition(Float_t &z, Float_t&y){
353
354 //correction of coordinates using the maps stored in the DB
355
356 AliITSCalibrationSDD* cal = (AliITSCalibrationSDD*)GetResp(fModule);
a97b3678 357 static const Int_t knbint = cal->GetMapTimeNBin();
358 static const Int_t knbina = cal->Chips()*cal->Channels();
5bfe44ce 359 Float_t stepa = (GetSeg()->Dpz(0))/10000.; //anode pitch in cm
360 Float_t stept = (GetSeg()->Dx()/cal->GetMapTimeNBin()/2.)/10.;
404c1c29 361
362 Int_t bint = TMath::Abs((Int_t)(y/stept));
a97b3678 363 if(y>=0) bint+=(Int_t)(knbint/2.);
364 if(bint>knbint) AliError("Wrong bin number!");
5bfe44ce 365
404c1c29 366 Int_t bina = TMath::Abs((Int_t)(z/stepa));
a97b3678 367 if(z>=0) bina+=(Int_t)(knbina/2.);
368 if(bina>knbina) AliError("Wrong bin number!");
5bfe44ce 369
370 Float_t devz = cal->GetMapACell(bina,bint)/10000.;
371 Float_t devx = cal->GetMapTCell(bina,bint)/10000.;
404c1c29 372 z+=devz;
373 y+=devx;
5bfe44ce 374
375
376}