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SHUTTLE test configuration updated
[u/mrichter/AliRoot.git] / ITS / AliITSClusterFinderV2SDD.cxx
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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/* $Id$*/
17
18////////////////////////////////////////////////////////////////////////////
19// Implementation of the ITS clusterer V2 class //
20// //
21// Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch //
22// //
23///////////////////////////////////////////////////////////////////////////
24
25
26
27#include <TClonesArray.h>
28#include "AliITSClusterFinderV2SDD.h"
29#include "AliITSRecPoint.h"
30#include "AliITSDetTypeRec.h"
31#include "AliRawReader.h"
32#include "AliITSRawStreamSDD.h"
33#include "AliITSCalibrationSDD.h"
34#include "AliITSDetTypeRec.h"
35#include "AliITSsegmentationSDD.h"
36#include "AliITSdigitSDD.h"
37#include "AliITSgeomTGeo.h"
38ClassImp(AliITSClusterFinderV2SDD)
39
40AliITSClusterFinderV2SDD::AliITSClusterFinderV2SDD(AliITSDetTypeRec* dettyp):AliITSClusterFinderV2(dettyp)
41{
42
43 //Default constructor
44
45}
46
47
48void AliITSClusterFinderV2SDD::FindRawClusters(Int_t mod){
49
50 //Find clusters V2
51 SetModule(mod);
52 FindClustersSDD(fDigits);
53
54}
55
56void AliITSClusterFinderV2SDD::FindClustersSDD(TClonesArray *digits) {
57 //------------------------------------------------------------
58 // Actual SDD cluster finder
59 //------------------------------------------------------------
60 Int_t nAnodes = GetSeg()->NpzHalf();
61 Int_t nzBins = nAnodes+2;
62 Int_t nTimeBins = GetSeg()->Npx();
63 Int_t nxBins = nTimeBins+2;
64 const Int_t kMaxBin=nzBins*(nxBins+2);
65
66 AliBin *bins[2];
67 bins[0]=new AliBin[kMaxBin];
68 bins[1]=new AliBin[kMaxBin];
69 AliITSCalibrationSDD* cal = (AliITSCalibrationSDD*)GetResp(fModule);
70 AliITSresponseSDD* res = (AliITSresponseSDD*)cal->GetResponse();
71 const char *option=res->ZeroSuppOption();
72 AliITSdigitSDD *d=0;
73 Int_t i, ndigits=digits->GetEntriesFast();
74 for (i=0; i<ndigits; i++) {
75 d=(AliITSdigitSDD*)digits->UncheckedAt(i);
76 Int_t y=d->GetCoord2()+1; //y
77 Int_t z=d->GetCoord1()+1; //z
78 Float_t gain=cal->GetChannelGain(d->GetCoord1());
79 Float_t charge=d->GetSignal();
80
81 if(!((strstr(option,"1D")) || (strstr(option,"2D")))){
82 Float_t baseline = cal->GetBaseline(d->GetCoord1());
83 if(charge>baseline) charge-=baseline;
84 else charge=0;
85 }
86
87 if(gain>0) charge/=gain;
88 if(charge<cal->GetThresholdAnode(d->GetCoord1())) continue;
89 Int_t q=(Int_t)(charge+0.5);
90
91 if (z <= nAnodes){
92 bins[0][y*nzBins+z].SetQ(q);
93 bins[0][y*nzBins+z].SetMask(1);
94 bins[0][y*nzBins+z].SetIndex(i);
95 } else {
96 z-=nAnodes;
97 bins[1][y*nzBins+z].SetQ(q);
98 bins[1][y*nzBins+z].SetMask(1);
99 bins[1][y*nzBins+z].SetIndex(i);
100 }
101 }
102
103 FindClustersSDD(bins, kMaxBin, nzBins, digits);
104
105 delete[] bins[0];
106 delete[] bins[1];
107
108}
109
110void AliITSClusterFinderV2SDD::
111FindClustersSDD(AliBin* bins[2], Int_t nMaxBin, Int_t nzBins,
112 TClonesArray *digits, TClonesArray *clusters) {
113 //------------------------------------------------------------
114 // Actual SDD cluster finder
115 //------------------------------------------------------------
116
117 const TGeoHMatrix *mT2L=AliITSgeomTGeo::GetTracking2LocalMatrix(fModule);
118 AliITSCalibrationSDD* cal = (AliITSCalibrationSDD*)GetResp(fModule);
119 Int_t ncl=0;
120 TClonesArray &cl=*clusters;
121 for (Int_t s=0; s<2; s++)
122 for (Int_t i=0; i<nMaxBin; i++) {
123 if (bins[s][i].IsUsed()) continue;
124 Int_t idx[32]; UInt_t msk[32]; Int_t npeaks=0;
125 FindPeaks(i, nzBins, bins[s], idx, msk, npeaks);
126
127 if (npeaks>30) continue;
128 if (npeaks==0) continue;
129
130 Int_t k,l;
131 for (k=0; k<npeaks-1; k++){//mark adjacent peaks
132 if (idx[k] < 0) continue; //this peak is already removed
133 for (l=k+1; l<npeaks; l++) {
134 if (idx[l] < 0) continue; //this peak is already removed
135 Int_t ki=idx[k]/nzBins, kj=idx[k] - ki*nzBins;
136 Int_t li=idx[l]/nzBins, lj=idx[l] - li*nzBins;
137 Int_t di=TMath::Abs(ki - li);
138 Int_t dj=TMath::Abs(kj - lj);
139 if (di>1 || dj>1) continue;
140 if (bins[s][idx[k]].GetQ() > bins[s][idx[l]].GetQ()) {
141 msk[l]=msk[k];
142 idx[l]*=-1;
143 } else {
144 msk[k]=msk[l];
145 idx[k]*=-1;
146 break;
147 }
148 }
149 }
150
151 for (k=0; k<npeaks; k++) {
152 MarkPeak(TMath::Abs(idx[k]), nzBins, bins[s], msk[k]);
153 }
154
155 for (k=0; k<npeaks; k++) {
156 if (idx[k] < 0) continue; //removed peak
157 AliITSRecPoint c;
158 MakeCluster(idx[k], nzBins, bins[s], msk[k], c);
159 //mi change
160 Int_t milab[10];
161 for (Int_t ilab=0;ilab<10;ilab++){
162 milab[ilab]=-2;
163 }
164 Int_t maxi=0,mini=0,maxj=0,minj=0;
165 //AliBin *bmax=&bins[s][idx[k]];
166 //Float_t max = TMath::Max(TMath::Abs(bmax->GetQ())/5.,3.);
167
168 for (Int_t di=-2; di<=2;di++){
169 for (Int_t dj=-3;dj<=3;dj++){
170 Int_t index = idx[k]+di+dj*nzBins;
171 if (index<0) continue;
172 if (index>=nMaxBin) continue;
173 AliBin *b=&bins[s][index];
174 Int_t nAnode=index%nzBins-1;
175 Int_t adcSignal=b->GetQ();
176 if(adcSignal>cal->GetThresholdAnode(nAnode)){
177 if (di>maxi) maxi=di;
178 if (di<mini) mini=di;
179 if (dj>maxj) maxj=dj;
180 if (dj<minj) minj=dj;
181 }
182 //
183 if(digits) {
184 if (TMath::Abs(di)<2&&TMath::Abs(dj)<2){
185 AliITSdigitSDD* d=(AliITSdigitSDD*)digits->UncheckedAt(b->GetIndex());
186 for (Int_t itrack=0;itrack<10;itrack++){
187 Int_t track = (d->GetTracks())[itrack];
188 if (track>=0) {
189 AddLabel(milab, track);
190 }
191 }
192 }
193 }
194 }
195 }
196
197
198 Float_t y=c.GetY(),z=c.GetZ(), q=c.GetQ();
199 y/=q; z/=q;
200
201
202 const Double_t kMicronTocm = 1.0e-4;
203 Float_t timeBinCenter = y-0.5;
204 Float_t zAnode=z-0.5;
205 Float_t zdet = (zAnode*GetSeg()->Dpz(0)-GetSeg()->Dz()/2.)*kMicronTocm;
206 Float_t driftTime = timeBinCenter*GetSeg()->Dpx(0) - cal->GetTimeOffset();
207 Float_t xdet = cal->GetDriftPath(driftTime,zAnode);
208 xdet=(xdet-GetSeg()->Dx())*kMicronTocm;
209 if (s) xdet=-xdet;
210
211
212 CorrectPosition(zdet,xdet);
213
214 Double_t loc[3]={xdet,0.,zdet},trk[3]={0.,0.,0.};
215 mT2L->MasterToLocal(loc,trk);
216 y=trk[1];
217 z=trk[2];
218
219 q/=cal->GetADC2keV(); //to have MPV 1 MIP = 86.4 KeV
220 Float_t hit[5] = {y, z, 0.0030*0.0030, 0.0020*0.0020, q};
221 Int_t info[3] = {maxj-minj+1, maxi-mini+1, fNlayer[fModule]};
222 if (digits) {
223 // AliBin *b=&bins[s][idx[k]];
224 // AliITSdigitSDD* d=(AliITSdigitSDD*)digits->UncheckedAt(b->GetIndex());
225 {
226 //Int_t lab[3];
227 //lab[0]=(d->GetTracks())[0];
228 //lab[1]=(d->GetTracks())[1];
229 //lab[2]=(d->GetTracks())[2];
230 //CheckLabels(lab);
231 CheckLabels2(milab);
232 }
233 }
234 milab[3]=fNdet[fModule];
235
236 AliITSRecPoint cc(milab,hit,info);
237 cc.SetType(npeaks);
238
239 if(clusters) new (cl[ncl]) AliITSRecPoint(cc);
240 else {
241 fDetTypeRec->AddRecPoint(cc);
242 }
243 ncl++;
244 }
245 }
246
247}
248
249
250
251void AliITSClusterFinderV2SDD::RawdataToClusters(AliRawReader* rawReader,TClonesArray** clusters){
252 //------------------------------------------------------------
253 // This function creates ITS clusters from raw data
254 //------------------------------------------------------------
255 rawReader->Reset();
256 AliITSRawStreamSDD inputSDD(rawReader);
257 FindClustersSDD(&inputSDD,clusters);
258
259}
260
261void AliITSClusterFinderV2SDD::FindClustersSDD(AliITSRawStream* input,
262 TClonesArray** clusters)
263{
264 //------------------------------------------------------------
265 // Actual SDD cluster finder for raw data
266 //------------------------------------------------------------
267 Int_t nClustersSDD = 0;
268 Int_t nAnodes = GetSeg()->NpzHalf();
269 Int_t nzBins = nAnodes+2;
270 Int_t nTimeBins = GetSeg()->Npx();
271 Int_t nxBins = nTimeBins+2;
272 const Int_t kMaxBin=nzBins*(nxBins+2);
273 AliBin *bins[2];
274 bins[0]=new AliBin[kMaxBin];
275 bins[1]=new AliBin[kMaxBin];
276
277 // read raw data input stream
278 while (kTRUE) {
279 Bool_t next = input->Next();
280 if (!next || input->IsCompletedModule()) {
281 // when all data from a module was read, search for clusters
282 Int_t iModule = input->GetModuleID();
283 if (iModule >= 0) {
284 clusters[iModule] = new TClonesArray("AliITSRecPoint");
285 fModule = iModule;
286 FindClustersSDD(bins, kMaxBin, nzBins, NULL, clusters[iModule]);
287 Int_t nClusters = clusters[iModule]->GetEntriesFast();
288 nClustersSDD += nClusters;
289 for(Int_t iBin=0;iBin<kMaxBin; iBin++){
290 bins[0][iBin].Reset();
291 bins[1][iBin].Reset();
292 }
293 }
294 if (!next) break;
295 }else{
296 // fill the current digit into the bins array
297 AliITSCalibrationSDD* cal = (AliITSCalibrationSDD*)GetResp(input->GetModuleID());
298 AliITSresponseSDD* res = (AliITSresponseSDD*)cal->GetResponse();
299 const char *option=res->ZeroSuppOption();
300 Float_t charge=input->GetSignal();
301 Float_t gain=cal->GetChannelGain(input->GetCoord1());
302 if(!((strstr(option,"1D")) || (strstr(option,"2D")))){
303 Float_t baseline = cal->GetBaseline(input->GetCoord1());
304 if(charge>baseline) charge-=baseline;
305 else charge=0;
306 }
307 if(gain>0) charge/=gain;
308 Int_t q=(Int_t)(charge+0.5);
309 if(q>=cal->GetThresholdAnode(input->GetCoord1())) {
310 Int_t iz = input->GetCoord1()+1;
311 Int_t side = ((AliITSRawStreamSDD*)input)->GetChannel();
312 Int_t index = (input->GetCoord2()+1) * nzBins + iz;
313 bins[side][index].SetQ(q);
314 bins[side][index].SetMask(1);
315 bins[side][index].SetIndex(index);
316 }
317 }
318 }
319 delete [] bins[0];
320 delete [] bins[1];
321
322 Info("FindClustersSDD", "found clusters in ITS SDD: %d", nClustersSDD);
323}
324
325
326//_________________________________________________________________________
327void AliITSClusterFinderV2SDD::CorrectPosition(Float_t &z, Float_t&y){
328
329 //correction of coordinates using the maps stored in the DB
330
331 AliITSCalibrationSDD* cal = (AliITSCalibrationSDD*)GetResp(fModule);
332 static const Int_t knbint = cal->GetMapTimeNBin();
333 static const Int_t knbina = cal->Chips()*cal->Channels();
334 const Double_t kMicronTocm = 1.0e-4;
335 Float_t stepa = (GetSeg()->Dpz(0))*kMicronTocm; //anode pitch in cm
336 Float_t stept = (GetSeg()->Dx()/cal->GetMapTimeNBin()/2.)/10.;
337
338 Int_t bint = TMath::Abs((Int_t)(y/stept));
339 if(y>=0) bint+=(Int_t)(knbint/2.);
340 if(bint>knbint) AliError("Wrong bin number!");
341
342 Int_t bina = TMath::Abs((Int_t)(z/stepa));
343 if(z>=0) bina+=(Int_t)(knbina/2.);
344 if(bina>knbina) AliError("Wrong bin number!");
345
346 Float_t devz = cal->GetMapACell(bina,bint)*kMicronTocm;
347 Float_t devx = cal->GetMapTCell(bina,bint)*kMicronTocm;
348 z+=devz;
349 y+=devx;
350
351
352}