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[u/mrichter/AliRoot.git] / PMD / AliPMDtracker.cxx
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7dcaf913 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 **************************************************************************/
15
16//-----------------------------------------------------//
17// //
18// Date : March 25 2004 //
19// This reads the file PMD.RecPoints.root(TreeR), //
20// calls the Clustering algorithm and stores the //
21// clustering output in PMD.RecPoints.root(TreeR) //
22// //
23//-----------------------------------------------------//
24
25#include <Riostream.h>
26#include <TMath.h>
7dcaf913 27#include <TTree.h>
7dcaf913 28#include <TObjArray.h>
29#include <TClonesArray.h>
30#include <TFile.h>
31#include <TBranch.h>
32#include <TNtuple.h>
33#include <TParticle.h>
34
35#include "AliPMDcluster.h"
36#include "AliPMDclupid.h"
37#include "AliPMDrecpoint1.h"
b0e4d1e1 38#include "AliPMDrecdata.h"
39#include "AliPMDrechit.h"
7dcaf913 40#include "AliPMDUtility.h"
41#include "AliPMDDiscriminator.h"
26f1ae17 42#include "AliPMDEmpDiscriminator.h"
7dcaf913 43#include "AliPMDtracker.h"
44
45#include "AliESDPmdTrack.h"
af885e0f 46#include "AliESDEvent.h"
ecee2a1a 47#include "AliLog.h"
7dcaf913 48
49ClassImp(AliPMDtracker)
50
51AliPMDtracker::AliPMDtracker():
52 fTreeR(0),
722ccc67 53 fRecpoints(new TClonesArray("AliPMDrecpoint1", 10)),
b0e4d1e1 54 fRechits(new TClonesArray("AliPMDrechit", 10)),
7dcaf913 55 fPMDcontin(new TObjArray()),
56 fPMDcontout(new TObjArray()),
7dcaf913 57 fPMDutil(new AliPMDUtility()),
58 fPMDrecpoint(0),
59 fPMDclin(0),
60 fPMDclout(0),
7dcaf913 61 fXvertex(0.),
62 fYvertex(0.),
63 fZvertex(0.),
64 fSigmaX(0.),
65 fSigmaY(0.),
66 fSigmaZ(0.)
67{
68 //
69 // Default Constructor
70 //
71}
72//--------------------------------------------------------------------//
a48edddd 73AliPMDtracker:: AliPMDtracker(const AliPMDtracker & /* tracker */):
2332574a 74 TObject(/* tracker */),
75 fTreeR(0),
76 fRecpoints(NULL),
b0e4d1e1 77 fRechits(NULL),
2332574a 78 fPMDcontin(NULL),
79 fPMDcontout(NULL),
80 fPMDutil(NULL),
81 fPMDrecpoint(0),
82 fPMDclin(0),
83 fPMDclout(0),
84 fXvertex(0.),
85 fYvertex(0.),
86 fZvertex(0.),
87 fSigmaX(0.),
88 fSigmaY(0.),
89 fSigmaZ(0.)
a48edddd 90{
91 // copy constructor
92 AliError("Copy constructor not allowed");
93}
94
95//--------------------------------------------------------------------//
96AliPMDtracker& AliPMDtracker::operator=(const AliPMDtracker & /* tracker */)
97{
98 // assignment operator
99 AliError("Assignment operator not allowed");
100 return *this;
101}
102
103//--------------------------------------------------------------------//
7dcaf913 104AliPMDtracker::~AliPMDtracker()
105{
106 // Destructor
107 if (fRecpoints)
108 {
722ccc67 109 fRecpoints->Clear();
7dcaf913 110 }
b0e4d1e1 111 if (fRechits)
112 {
113 fRechits->Clear();
114 }
115
7dcaf913 116 if (fPMDcontin)
117 {
118 fPMDcontin->Delete();
119 delete fPMDcontin;
120 fPMDcontin=0;
a1e9ac09 121
7dcaf913 122 }
123 if (fPMDcontout)
722ccc67 124 {
7dcaf913 125 fPMDcontout->Delete();
126 delete fPMDcontout;
127 fPMDcontout=0;
a1e9ac09 128
7dcaf913 129 }
316c6cd9 130 delete fPMDutil;
7dcaf913 131}
132//--------------------------------------------------------------------//
133void AliPMDtracker::LoadClusters(TTree *treein)
134{
135 // Load the Reconstructed tree
136 fTreeR = treein;
137}
138//--------------------------------------------------------------------//
af885e0f 139void AliPMDtracker::Clusters2Tracks(AliESDEvent *event)
7dcaf913 140{
141 // Converts digits to recpoints after running clustering
142 // algorithm on CPV plane and PREshower plane
143 //
144
145 Int_t idet;
146 Int_t ismn;
b0e4d1e1 147 Int_t trackno, trackpid;
26f1ae17 148 Float_t clusdata[6];
b0e4d1e1 149
150 Int_t *irow;
151 Int_t *icol;
152 Int_t *itra;
153 Int_t *ipid;
154 Float_t *cadc;
155
156 AliPMDrechit *rechit = 0x0;
7dcaf913 157
158 TBranch *branch = fTreeR->GetBranch("PMDRecpoint");
ecee2a1a 159 if (!branch)
160 {
161 AliError("PMDRecpoint branch not found");
162 return;
163 }
7dcaf913 164 branch->SetAddress(&fRecpoints);
b0e4d1e1 165
166 TBranch *branch1 = fTreeR->GetBranch("PMDRechit");
167 if (!branch1)
168 {
169 AliError("PMDRechit branch not found");
170 return;
171 }
172 branch1->SetAddress(&fRechits);
d270ca46 173
174 Int_t ncrhit = 0;
26f1ae17 175 Int_t nmodules = (Int_t) branch->GetEntries();
176
ecee2a1a 177 AliDebug(1,Form("Number of modules filled in treeR = %d",nmodules));
7dcaf913 178 for (Int_t imodule = 0; imodule < nmodules; imodule++)
179 {
26f1ae17 180 branch->GetEntry(imodule);
7dcaf913 181 Int_t nentries = fRecpoints->GetLast();
ecee2a1a 182 AliDebug(2,Form("Number of clusters per modules filled in treeR = %d"
183 ,nentries));
b0e4d1e1 184
7dcaf913 185 for(Int_t ient = 0; ient < nentries+1; ient++)
186 {
187 fPMDrecpoint = (AliPMDrecpoint1*)fRecpoints->UncheckedAt(ient);
188 idet = fPMDrecpoint->GetDetector();
189 ismn = fPMDrecpoint->GetSMNumber();
190 clusdata[0] = fPMDrecpoint->GetClusX();
191 clusdata[1] = fPMDrecpoint->GetClusY();
192 clusdata[2] = fPMDrecpoint->GetClusADC();
193 clusdata[3] = fPMDrecpoint->GetClusCells();
26f1ae17 194 clusdata[4] = fPMDrecpoint->GetClusSigmaX();
195 clusdata[5] = fPMDrecpoint->GetClusSigmaY();
4b1e197e 196
e6ba3040 197 if (clusdata[4] >= 0. && clusdata[5] >= 0.)
920e13db 198 {
b0e4d1e1 199 // extract the associated cell information
200 branch1->GetEntry(ncrhit);
201 Int_t nenbr1 = fRechits->GetLast() + 1;
202
203 irow = new Int_t[nenbr1];
204 icol = new Int_t[nenbr1];
205 itra = new Int_t[nenbr1];
206 ipid = new Int_t[nenbr1];
207 cadc = new Float_t[nenbr1];
4b1e197e 208
b0e4d1e1 209 for (Int_t ient1 = 0; ient1 < nenbr1; ient1++)
210 {
211 rechit = (AliPMDrechit*)fRechits->UncheckedAt(ient1);
212 //irow[ient1] = rechit->GetCellX();
213 //icol[ient1] = rechit->GetCellY();
214 itra[ient1] = rechit->GetCellTrack();
215 ipid[ient1] = rechit->GetCellPid();
216 cadc[ient1] = rechit->GetCellAdc();
217 }
4b1e197e 218 if (idet == 0)
219 {
220 AssignTrPidToCluster(nenbr1, itra, ipid, cadc,
221 trackno, trackpid);
222 }
223 else if (idet == 1)
224 {
225 trackno = itra[0];
226 trackpid = ipid[0];
227 }
b0e4d1e1 228
229 delete [] irow;
230 delete [] icol;
231 delete [] itra;
232 delete [] ipid;
233 delete [] cadc;
234
235 fPMDclin = new AliPMDrecdata(idet,ismn,trackno,trackpid,clusdata);
920e13db 236 fPMDcontin->Add(fPMDclin);
b0e4d1e1 237
238 ncrhit++;
920e13db 239 }
7dcaf913 240 }
241 }
242
26f1ae17 243 AliPMDDiscriminator *pmddiscriminator = new AliPMDEmpDiscriminator();
244 pmddiscriminator->Discrimination(fPMDcontin,fPMDcontout);
7dcaf913 245
50555ba1 246 const Float_t kzpos = 361.5; // middle of the PMD
01c4d84a 247
b0e4d1e1 248 Int_t det,smn,trno,trpid,mstat;
7dcaf913 249 Float_t xpos,ypos;
b0e4d1e1 250 Float_t adc, ncell, radx, rady;
01c4d84a 251 Float_t xglobal = 0., yglobal = 0., zglobal = 0;
7dcaf913 252 Float_t pid;
253
7dcaf913 254
255 Int_t nentries2 = fPMDcontout->GetEntries();
ecee2a1a 256 AliDebug(1,Form("Number of clusters coming after discrimination = %d"
257 ,nentries2));
7dcaf913 258 for (Int_t ient1 = 0; ient1 < nentries2; ient1++)
259 {
260 fPMDclout = (AliPMDclupid*)fPMDcontout->UncheckedAt(ient1);
261
262 det = fPMDclout->GetDetector();
263 smn = fPMDclout->GetSMN();
b0e4d1e1 264 trno = fPMDclout->GetClusTrackNo();
265 trpid = fPMDclout->GetClusTrackPid();
266 mstat = fPMDclout->GetClusMatching();
7dcaf913 267 xpos = fPMDclout->GetClusX();
268 ypos = fPMDclout->GetClusY();
269 adc = fPMDclout->GetClusADC();
270 ncell = fPMDclout->GetClusCells();
b0e4d1e1 271 radx = fPMDclout->GetClusSigmaX();
272 rady = fPMDclout->GetClusSigmaY();
7dcaf913 273 pid = fPMDclout->GetClusPID();
274
275 //
7dcaf913 276 /**********************************************************************
277 * det : Detector, 0: PRE & 1:CPV *
01c4d84a 278 * smn : Serial Module Number 0 to 23 for each plane *
7dcaf913 279 * xpos : x-position of the cluster *
280 * ypos : y-position of the cluster *
281 * THESE xpos & ypos are not the true xpos and ypos *
282 * for some of the unit modules. They are rotated. *
283 * adc : ADC contained in the cluster *
284 * ncell : Number of cells contained in the cluster *
285 * rad : radius of the cluster (1d fit) *
7dcaf913 286 **********************************************************************/
287 //
01c4d84a 288
289 fPMDutil->RectGeomCellPos(smn,xpos,ypos,xglobal,yglobal);
26f1ae17 290
291 if (det == 0)
292 {
50555ba1 293 zglobal = kzpos + 1.6; // PREshower plane
26f1ae17 294 }
295 else if (det == 1)
296 {
50555ba1 297 zglobal = kzpos - 1.7; // CPV plane
26f1ae17 298 }
299
7dcaf913 300 // Fill ESD
301
302 AliESDPmdTrack *esdpmdtr = new AliESDPmdTrack();
303
304 esdpmdtr->SetDetector(det);
c6f4d28b 305 esdpmdtr->SetSmn(smn);
306 esdpmdtr->SetClusterTrackNo(trno);
307 esdpmdtr->SetClusterTrackPid(trpid);
308 esdpmdtr->SetClusterMatching(mstat);
309
26f1ae17 310 esdpmdtr->SetClusterX(xglobal);
311 esdpmdtr->SetClusterY(yglobal);
312 esdpmdtr->SetClusterZ(zglobal);
7dcaf913 313 esdpmdtr->SetClusterADC(adc);
26f1ae17 314 esdpmdtr->SetClusterCells(ncell);
7dcaf913 315 esdpmdtr->SetClusterPID(pid);
c6f4d28b 316 esdpmdtr->SetClusterSigmaX(radx);
317 esdpmdtr->SetClusterSigmaY(rady);
7dcaf913 318
319 event->AddPmdTrack(esdpmdtr);
320 }
a1e9ac09 321
322 fPMDcontin->Delete();
323 fPMDcontout->Delete();
324
7dcaf913 325}
326//--------------------------------------------------------------------//
b0e4d1e1 327void AliPMDtracker::AssignTrPidToCluster(Int_t nentry, Int_t *itra,
328 Int_t *ipid, Float_t *cadc,
329 Int_t &trackno, Int_t &trackpid)
330{
331 // assign the track number and the corresponding pid to a cluster
332 // split cluster part will be done at the time of calculating eff/pur
333
334 Int_t *phentry = new Int_t [nentry];
335 Int_t *trenergy = 0x0;
336 Int_t *sortcoord = 0x0;
337
338 Int_t ngtrack = 0;
339 for (Int_t i = 0; i < nentry; i++)
340 {
341 phentry[i] = -1;
342 if (ipid[i] == 22)
343 {
344 phentry[ngtrack] = i;
345 ngtrack++;
346 }
347 }
4b1e197e 348
b0e4d1e1 349 if (ngtrack == 0)
350 {
351 // hadron track
352 // no need of track number, set to -1
353 trackpid = 8;
354 trackno = -1;
355 }
356 else if (ngtrack == 1)
357 {
358 // only one photon track
359 // track number set to photon track
360 trackpid = 1;
361 trackno = itra[phentry[0]];
362 }
363 else if (ngtrack > 1)
364 {
365 // more than one photon track
4b1e197e 366
b0e4d1e1 367 trenergy = new Int_t [ngtrack];
368 sortcoord = new Int_t [ngtrack];
369 for (Int_t i = 0; i < ngtrack; i++)
370 {
371 trenergy[i] = 0.;
372 for (Int_t j = 0; j < nentry; j++)
373 {
374 if (ipid[j] == 22 && itra[j] == itra[phentry[i]])
375 {
376 trenergy[i] += cadc[j];
377 }
378 }
379 }
4b1e197e 380
b0e4d1e1 381 Bool_t jsort = true;
382 TMath::Sort(ngtrack,trenergy,sortcoord,jsort);
4b1e197e 383
b0e4d1e1 384 Int_t gtr = sortcoord[0];
385 trackno = itra[phentry[gtr]]; // highest adc track
386 trackpid = 1;
4b1e197e 387
b0e4d1e1 388 delete [] trenergy;
389 delete [] sortcoord;
4b1e197e 390
b0e4d1e1 391 } // end of ngtrack > 1
4b1e197e 392
b0e4d1e1 393}
394//--------------------------------------------------------------------//
7dcaf913 395void AliPMDtracker::SetVertex(Double_t vtx[3], Double_t evtx[3])
396{
397 fXvertex = vtx[0];
398 fYvertex = vtx[1];
399 fZvertex = vtx[2];
400 fSigmaX = evtx[0];
401 fSigmaY = evtx[1];
402 fSigmaZ = evtx[2];
403}
404//--------------------------------------------------------------------//
7dcaf913 405void AliPMDtracker::ResetClusters()
406{
407 if (fRecpoints) fRecpoints->Clear();
408}
409//--------------------------------------------------------------------//