1 /**************************************************************************
2 * Copyright(c) 1998-2003, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
18 ////////////////////////////////////////////////////////////////////////////
19 // Implementation of the ITS clusterer V2 class //
21 // Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch //
23 ///////////////////////////////////////////////////////////////////////////
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"
38 ClassImp(AliITSClusterFinderV2SDD)
40 AliITSClusterFinderV2SDD::AliITSClusterFinderV2SDD(AliITSDetTypeRec* dettyp):AliITSClusterFinderV2(dettyp),
54 void AliITSClusterFinderV2SDD::FindRawClusters(Int_t mod){
58 FindClustersSDD(fDigits);
62 void AliITSClusterFinderV2SDD::FindClustersSDD(TClonesArray *digits) {
63 //------------------------------------------------------------
64 // Actual SDD cluster finder
65 //------------------------------------------------------------
66 Int_t kNzBins = fNzSDD + 2;
67 const Int_t kMAXBIN=kNzBins*(fNySDD+2);
70 bins[0]=new AliBin[kMAXBIN];
71 bins[1]=new AliBin[kMAXBIN];
72 AliITSCalibrationSDD* cal = (AliITSCalibrationSDD*)GetResp(fModule);
73 AliITSresponseSDD* res = (AliITSresponseSDD*)cal->GetResponse();
74 const char *option=res->ZeroSuppOption();
76 Int_t i, ndigits=digits->GetEntriesFast();
77 for (i=0; i<ndigits; i++) {
78 d=(AliITSdigitSDD*)digits->UncheckedAt(i);
79 Int_t y=d->GetCoord2()+1; //y
80 Int_t z=d->GetCoord1()+1; //z
81 Int_t q=d->GetSignal();
82 if(!((strstr(option,"1D")) || (strstr(option,"2D")))){
83 Float_t baseline = cal->GetBaseline(d->GetCoord1());
84 if(q>baseline) q-=(Int_t)baseline;
87 if(q<cal->GetThresholdAnode(d->GetCoord1())) continue;
91 bins[0][y*kNzBins+z].SetQ(q);
92 bins[0][y*kNzBins+z].SetMask(1);
93 bins[0][y*kNzBins+z].SetIndex(i);
96 bins[1][y*kNzBins+z].SetQ(q);
97 bins[1][y*kNzBins+z].SetMask(1);
98 bins[1][y*kNzBins+z].SetIndex(i);
102 FindClustersSDD(bins, kMAXBIN, kNzBins, digits);
109 void AliITSClusterFinderV2SDD::
110 FindClustersSDD(AliBin* bins[2], Int_t nMaxBin, Int_t nzBins,
111 TClonesArray *digits, TClonesArray *clusters) {
112 //------------------------------------------------------------
113 // Actual SDD cluster finder
114 //------------------------------------------------------------
116 const TGeoHMatrix *mT2L=AliITSgeomTGeo::GetTracking2LocalMatrix(fModule);
117 AliITSCalibrationSDD* cal = (AliITSCalibrationSDD*)GetResp(fModule);
119 TClonesArray &cl=*clusters;
120 for (Int_t s=0; s<2; s++)
121 for (Int_t i=0; i<nMaxBin; i++) {
122 if (bins[s][i].IsUsed()) continue;
123 Int_t idx[32]; UInt_t msk[32]; Int_t npeaks=0;
124 FindPeaks(i, nzBins, bins[s], idx, msk, npeaks);
126 if (npeaks>30) continue;
127 if (npeaks==0) continue;
130 for (k=0; k<npeaks-1; k++){//mark adjacent peaks
131 if (idx[k] < 0) continue; //this peak is already removed
132 for (l=k+1; l<npeaks; l++) {
133 if (idx[l] < 0) continue; //this peak is already removed
134 Int_t ki=idx[k]/nzBins, kj=idx[k] - ki*nzBins;
135 Int_t li=idx[l]/nzBins, lj=idx[l] - li*nzBins;
136 Int_t di=TMath::Abs(ki - li);
137 Int_t dj=TMath::Abs(kj - lj);
138 if (di>1 || dj>1) continue;
139 if (bins[s][idx[k]].GetQ() > bins[s][idx[l]].GetQ()) {
150 for (k=0; k<npeaks; k++) {
151 MarkPeak(TMath::Abs(idx[k]), nzBins, bins[s], msk[k]);
154 for (k=0; k<npeaks; k++) {
155 if (idx[k] < 0) continue; //removed peak
157 MakeCluster(idx[k], nzBins, bins[s], msk[k], c);
160 for (Int_t ilab=0;ilab<10;ilab++){
163 Int_t maxi=0,mini=0,maxj=0,minj=0;
164 //AliBin *bmax=&bins[s][idx[k]];
165 //Float_t max = TMath::Max(TMath::Abs(bmax->GetQ())/5.,3.);
167 for (Int_t di=-2; di<=2;di++){
168 for (Int_t dj=-3;dj<=3;dj++){
169 Int_t index = idx[k]+di+dj*nzBins;
170 if (index<0) continue;
171 if (index>=nMaxBin) continue;
172 AliBin *b=&bins[s][index];
173 Int_t nAnode=index%nzBins-1;
174 Int_t adcSignal=b->GetQ();
175 if(adcSignal>cal->GetThresholdAnode(nAnode)){
176 if (di>maxi) maxi=di;
177 if (di<mini) mini=di;
178 if (dj>maxj) maxj=dj;
179 if (dj<minj) minj=dj;
183 if (TMath::Abs(di)<2&&TMath::Abs(dj)<2){
184 AliITSdigitSDD* d=(AliITSdigitSDD*)digits->UncheckedAt(b->GetIndex());
185 for (Int_t itrack=0;itrack<10;itrack++){
186 Int_t track = (d->GetTracks())[itrack];
188 AddLabel(milab, track);
197 Float_t y=c.GetY(),z=c.GetZ(), q=c.GetQ();
203 z=(z-0.5)*fZpitchSDD;
206 Float_t timebin = GetSeg()->Dpx(0);
207 Float_t driftTime = (yyyy-0.5)*timebin - fTimeOffsetSDD;
208 Float_t xdet = cal->GetDriftPath(driftTime,0);
209 xdet=xdet/10000.-fHwSDD;
212 CorrectPosition(zdet,xdet);
215 Double_t loc[3]={xdet,0.,zdet},trk[3]={0.,0.,0.};
216 mT2L->MasterToLocal(loc,trk);
220 q/=5.243; //to have MPV 1 MIP = 86.4 KeV --> this must go to calibr.
221 Float_t hit[5] = {y, z, 0.0030*0.0030, 0.0020*0.0020, q};
222 Int_t info[3] = {maxj-minj+1, maxi-mini+1, fNlayer[fModule]};
224 // AliBin *b=&bins[s][idx[k]];
225 // AliITSdigitSDD* d=(AliITSdigitSDD*)digits->UncheckedAt(b->GetIndex());
228 //lab[0]=(d->GetTracks())[0];
229 //lab[1]=(d->GetTracks())[1];
230 //lab[2]=(d->GetTracks())[2];
235 milab[3]=fNdet[fModule];
237 AliITSRecPoint cc(milab,hit,info);
240 if(clusters) new (cl[ncl]) AliITSRecPoint(cc);
242 fDetTypeRec->AddRecPoint(cc);
252 void AliITSClusterFinderV2SDD::RawdataToClusters(AliRawReader* rawReader,TClonesArray** clusters){
253 //------------------------------------------------------------
254 // This function creates ITS clusters from raw data
255 //------------------------------------------------------------
257 AliITSRawStreamSDD inputSDD(rawReader);
258 FindClustersSDD(&inputSDD,clusters);
262 void AliITSClusterFinderV2SDD::FindClustersSDD(AliITSRawStream* input,
263 TClonesArray** clusters)
265 //------------------------------------------------------------
266 // Actual SDD cluster finder for raw data
267 //------------------------------------------------------------
268 Int_t nClustersSDD = 0;
269 Int_t kNzBins = fNzSDD + 2;
270 Int_t kMaxBin = kNzBins * (fNySDD+2);
272 bins[0]=new AliBin[kMaxBin];
273 bins[1]=new AliBin[kMaxBin];
275 // read raw data input stream
277 Bool_t next = input->Next();
278 if (!next || input->IsCompletedModule()) {
279 // when all data from a module was read, search for clusters
280 Int_t iModule = input->GetModuleID();
281 clusters[iModule] = new TClonesArray("AliITSRecPoint");
283 FindClustersSDD(bins, kMaxBin, kNzBins, NULL, clusters[iModule]);
284 Int_t nClusters = clusters[iModule]->GetEntriesFast();
285 nClustersSDD += nClusters;
286 for(Int_t iBin=0;iBin<kMaxBin; iBin++){
287 bins[0][iBin].Reset();
288 bins[1][iBin].Reset();
292 // fill the current digit into the bins array
293 AliITSCalibrationSDD* cal = (AliITSCalibrationSDD*)GetResp(input->GetModuleID());
294 AliITSresponseSDD* res = (AliITSresponseSDD*)cal->GetResponse();
295 const char *option=res->ZeroSuppOption();
296 Int_t q=input->GetSignal();
297 if(!((strstr(option,"1D")) || (strstr(option,"2D")))){
298 Float_t baseline = cal->GetBaseline(input->GetCoord1());
299 if(q>baseline) q-=(Int_t)baseline;
302 if(q>=cal->GetThresholdAnode(input->GetCoord1())) {
303 Int_t iz = input->GetCoord1()+1;
304 //Int_t side = ((iz <= fNzSDD) ? 0 : 1);
305 Int_t side = ((AliITSRawStreamSDD*)input)->GetChannel();
306 // iz -= side*fNzSDD;
307 Int_t index = (input->GetCoord2()+1) * kNzBins + iz;
308 bins[side][index].SetQ(q);
309 bins[side][index].SetMask(1);
310 bins[side][index].SetIndex(index);
317 Info("FindClustersSDD", "found clusters in ITS SDD: %d", nClustersSDD);
321 //_________________________________________________________________________
322 void AliITSClusterFinderV2SDD::CorrectPosition(Float_t &z, Float_t&y){
324 //correction of coordinates using the maps stored in the DB
326 AliITSCalibrationSDD* cal = (AliITSCalibrationSDD*)GetResp(fModule);
327 static const Int_t knbint = cal->GetMapTimeNBin();
328 static const Int_t knbina = cal->Chips()*cal->Channels();
329 Float_t stepa = (GetSeg()->Dpz(0))/10000.; //anode pitch in cm
330 Float_t stept = (GetSeg()->Dx()/cal->GetMapTimeNBin()/2.)/10.;
332 Int_t bint = TMath::Abs((Int_t)(y/stept));
333 if(y>=0) bint+=(Int_t)(knbint/2.);
334 if(bint>knbint) AliError("Wrong bin number!");
336 Int_t bina = TMath::Abs((Int_t)(z/stepa));
337 if(z>=0) bina+=(Int_t)(knbina/2.);
338 if(bina>knbina) AliError("Wrong bin number!");
340 Float_t devz = cal->GetMapACell(bina,bint)/10000.;
341 Float_t devx = cal->GetMapTCell(bina,bint)/10000.;