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 **************************************************************************/
15 ////////////////////////////////////////////////////////////////////////////
16 // Implementation of the ITS clusterer V2 class //
18 // Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch //
20 ///////////////////////////////////////////////////////////////////////////
24 #include "AliITSClusterFinderV2SDD.h"
25 #include "AliITSRecPoint.h"
26 #include "AliITSDetTypeRec.h"
27 #include "AliRawReader.h"
28 #include "AliITSRawStreamSDD.h"
29 #include "AliITSCalibrationSDD.h"
30 #include "AliITSDetTypeRec.h"
31 #include "AliITSsegmentationSDD.h"
32 #include <TClonesArray.h>
33 #include "AliITSdigitSDD.h"
35 ClassImp(AliITSClusterFinderV2SDD)
37 AliITSClusterFinderV2SDD::AliITSClusterFinderV2SDD(AliITSDetTypeRec* dettyp):AliITSClusterFinderV2(dettyp),
52 void AliITSClusterFinderV2SDD::FindRawClusters(Int_t mod){
56 FindClustersSDD(fDigits);
60 void 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);
68 bins[0]=new AliBin[kMAXBIN];
69 bins[1]=new AliBin[kMAXBIN];
70 AliITSCalibrationSDD* cal = (AliITSCalibrationSDD*)GetResp(fModule);
71 AliITSresponseSDD* res = (AliITSresponseSDD*)cal->GetResponse();
72 const char *option=res->ZeroSuppOption();
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();
80 if(!((strstr(option,"1D")) || (strstr(option,"2D")))){
81 Float_t baseline = cal->GetBaseline(d->GetCoord1());
82 if(q>baseline) q-=(Int_t)baseline;
85 if(q<cal->GetThresholdAnode(d->GetCoord1())) continue;
90 bins[0][y*kNzBins+z].SetQ(q);
91 bins[0][y*kNzBins+z].SetMask(1);
92 bins[0][y*kNzBins+z].SetIndex(i);
95 bins[1][y*kNzBins+z].SetQ(q);
96 bins[1][y*kNzBins+z].SetMask(1);
97 bins[1][y*kNzBins+z].SetIndex(i);
101 FindClustersSDD(bins, kMAXBIN, kNzBins, digits);
108 void AliITSClusterFinderV2SDD::
109 FindClustersSDD(AliBin* bins[2], Int_t nMaxBin, Int_t nzBins,
110 TClonesArray *digits, TClonesArray *clusters) {
111 //------------------------------------------------------------
112 // Actual SDD cluster finder
113 //------------------------------------------------------------
114 AliITSCalibrationSDD* cal = (AliITSCalibrationSDD*)GetResp(fModule);
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);
123 if (npeaks>30) continue;
124 if (npeaks==0) continue;
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()) {
147 for (k=0; k<npeaks; k++) {
148 MarkPeak(TMath::Abs(idx[k]), nzBins, bins[s], msk[k]);
151 for (k=0; k<npeaks; k++) {
152 if (idx[k] < 0) continue; //removed peak
154 MakeCluster(idx[k], nzBins, bins[s], msk[k], c);
157 for (Int_t ilab=0;ilab<10;ilab++){
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.);
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;
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];
182 AddLabel(milab, track);
191 Float_t s2 = c.GetSigmaY2()/c.GetQ() - c.GetY()*c.GetY();
192 Float_t w=par->GetPadPitchWidth(sec);
195 c.SetSigmaY2(c.GetSigmaY2()*0.108);
196 if (sec<par->GetNInnerSector()) c.SetSigmaY2(c.GetSigmaY2()*2.07);
198 s2 = c.GetSigmaZ2()/c.GetQ() - c.GetZ()*c.GetZ();
203 c.SetSigmaZ2(c.GetSigmaZ2()*0.169);
204 if (sec<par->GetNInnerSector()) c.SetSigmaZ2(c.GetSigmaZ2()*1.77);
208 Float_t y=c.GetY(),z=c.GetZ(), q=c.GetQ();
211 //Float_t s2 = c.GetSigmaY2()/c.GetQ() - y*y;
213 //s2 = c.GetSigmaZ2()/c.GetQ() - z*z;
218 //y=(y-0.5)*fYpitchSDD;
220 //y-=fYoffSDD; //delay ?
223 z=(z-0.5)*fZpitchSDD;
226 // y=-(-y+fYshift[fModule]);
227 // z= -z+fZshift[fModule];
230 Float_t timebin = GetSeg()->Dpx(0);
231 Float_t xdet = cal->GetDriftPath((yyyy-0.5)*timebin,0);
232 xdet=xdet/10000.-fHwSDD-fYoffSDD;
235 CorrectPosition(zdet,xdet);
237 y=-(-xdet+fYshift[fModule]);
238 z= -zdet+fZshift[fModule];
240 q/=12.7; //this WAS consistent with SSD. To be reassessed
242 Float_t hit[5] = {y, z, 0.0030*0.0030, 0.0020*0.0020, q};
243 Int_t info[3] = {maxj-minj+1, maxi-mini+1, fNlayer[fModule]};
245 if (c.GetQ() < 20.) continue; //noise cluster
248 // AliBin *b=&bins[s][idx[k]];
249 // AliITSdigitSDD* d=(AliITSdigitSDD*)digits->UncheckedAt(b->GetIndex());
252 //lab[0]=(d->GetTracks())[0];
253 //lab[1]=(d->GetTracks())[1];
254 //lab[2]=(d->GetTracks())[2];
259 milab[3]=fNdet[fModule];
261 AliITSRecPoint cc(milab,hit,info);
264 if(clusters) new (cl[ncl]) AliITSRecPoint(cc);
266 fDetTypeRec->AddRecPoint(cc);
275 void AliITSClusterFinderV2SDD::RawdataToClusters(AliRawReader* rawReader,TClonesArray** clusters){
276 //------------------------------------------------------------
277 // This function creates ITS clusters from raw data
278 //------------------------------------------------------------
280 AliITSRawStreamSDD inputSDD(rawReader);
281 FindClustersSDD(&inputSDD,clusters);
285 void AliITSClusterFinderV2SDD::FindClustersSDD(AliITSRawStream* input,
286 TClonesArray** clusters)
288 //------------------------------------------------------------
289 // Actual SDD cluster finder for raw data
290 //------------------------------------------------------------
291 Int_t nClustersSDD = 0;
292 Int_t kNzBins = fNzSDD + 2;
293 Int_t kMaxBin = kNzBins * (fNySDD+2);
294 AliBin *binsSDDInit = new AliBin[kMaxBin];
295 AliBin *binsSDD1 = new AliBin[kMaxBin];
296 AliBin *binsSDD2 = new AliBin[kMaxBin];
297 AliBin* bins[2] = {NULL, NULL};
299 // read raw data input stream
301 Bool_t next = input->Next();
302 if (!next || input->IsNewModule()) {
303 Int_t iModule = input->GetPrevModuleID();
305 // when all data from a module was read, search for clusters
307 clusters[iModule] = new TClonesArray("AliITSRecPoint");
309 FindClustersSDD(bins, kMaxBin, kNzBins, NULL, clusters[iModule]);
310 Int_t nClusters = clusters[iModule]->GetEntriesFast();
311 nClustersSDD += nClusters;
312 bins[0] = bins[1] = NULL;
319 memcpy(binsSDD1,binsSDDInit,sizeof(AliBin)*kMaxBin);
320 memcpy(binsSDD2,binsSDDInit,sizeof(AliBin)*kMaxBin);
324 // fill the current digit into the bins array
325 if(input->GetSignal()>=3) {
326 Int_t iz = input->GetCoord1()+1;
327 Int_t side = ((iz <= fNzSDD) ? 0 : 1);
329 Int_t index = (input->GetCoord2()+1) * kNzBins + iz;
330 bins[side][index].SetQ(input->GetSignal());
331 bins[side][index].SetMask(1);
332 bins[side][index].SetIndex(index);
337 delete[] binsSDDInit;
339 Info("FindClustersSDD", "found clusters in ITS SDD: %d", nClustersSDD);
344 //_________________________________________________________________________
345 void AliITSClusterFinderV2SDD::CorrectPosition(Float_t &z, Float_t&y){
347 //correction of coordinates using the maps stored in the DB
349 AliITSCalibrationSDD* cal = (AliITSCalibrationSDD*)GetResp(fModule);
350 static const Int_t nbint = cal->GetMapTimeNBin();
351 static const Int_t nbina = cal->Chips()*cal->Channels();
352 Float_t stepa = (GetSeg()->Dpz(0))/10000.; //anode pitch in cm
353 Float_t stept = (GetSeg()->Dx()/cal->GetMapTimeNBin()/2.)/10.;
355 Int_t bint = TMath::Abs((Int_t)(y/stept));
356 if(y>=0) bint+=(Int_t)(nbint/2.);
357 if(bint>nbint) AliError("Wrong bin number!");
359 Int_t bina = TMath::Abs((Int_t)(z/stepa));
360 if(z>=0) bina+=(Int_t)(nbina/2.);
361 if(bina>nbina) AliError("Wrong bin number!");
363 Float_t devz = cal->GetMapACell(bina,bint)/10000.;
364 Float_t devx = cal->GetMapTCell(bina,bint)/10000.;