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d15a28e7 | 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 | **************************************************************************/ | |
b2a60966 | 15 | /* $Id$ */ |
702ab87e | 16 | |
17 | /* History of cvs commits: | |
18 | * | |
19 | * $Log$ | |
04236e67 | 20 | * Revision 1.93 2007/10/10 09:05:10 schutz |
21 | * Changing name QualAss to QA | |
22 | * | |
b8274834 | 23 | * Revision 1.92 2007/08/28 12:55:08 policheh |
24 | * Loaders removed from the reconstruction code (C.Cheshkov) | |
25 | * | |
9a2cdbdf | 26 | * Revision 1.91 2007/08/07 14:12:03 kharlov |
27 | * Quality assurance added (Yves Schutz) | |
28 | * | |
ddd1a39c | 29 | * Revision 1.90 2007/07/11 13:43:30 hristov |
30 | * New class AliESDEvent, backward compatibility with the old AliESD (Christian) | |
31 | * | |
af885e0f | 32 | * Revision 1.89 2007/07/03 08:13:04 kharlov |
33 | * Bug fix in CPV local coordinates | |
34 | * | |
b22f5347 | 35 | * Revision 1.88 2007/06/27 09:11:07 kharlov |
36 | * Bug fix for CPV-EMC distance | |
37 | * | |
78881c42 | 38 | * Revision 1.87 2007/05/04 14:49:29 policheh |
39 | * AliPHOSRecPoint inheritance from AliCluster | |
40 | * | |
9ee9f78d | 41 | * Revision 1.86 2007/04/02 15:00:16 cvetan |
42 | * No more calls to gAlice in the reconstruction | |
43 | * | |
999f9a8f | 44 | * Revision 1.85 2007/03/28 19:18:15 kharlov |
45 | * RecPoints recalculation in TSM removed | |
46 | * | |
8c1fb709 | 47 | * Revision 1.84 2007/03/07 07:01:21 hristov |
48 | * Fixing copy/paste erro. Additional protections | |
49 | * | |
b89c16b2 | 50 | * Revision 1.83 2007/03/06 21:07:37 kharlov |
51 | * DP: xz CPV-EMC distance filled to TS | |
52 | * | |
d7ddbb70 | 53 | * Revision 1.82 2007/03/06 06:54:48 kharlov |
54 | * DP:Calculation of cluster properties dep. on vertex added | |
55 | * | |
e84d3def | 56 | * Revision 1.81 2007/02/05 10:02:40 kharlov |
57 | * Module numbering is corrected | |
58 | * | |
a2ee5b34 | 59 | * Revision 1.80 2006/08/28 10:01:56 kharlov |
60 | * Effective C++ warnings fixed (Timur Pocheptsov) | |
61 | * | |
3663622c | 62 | * Revision 1.79 2006/04/25 12:41:15 hristov |
63 | * Moving non-persistent data to AliESDfriend (Yu.Belikov) | |
64 | * | |
15e85efa | 65 | * Revision 1.78 2005/11/18 13:04:51 hristov |
66 | * Bug fix | |
67 | * | |
a494460a | 68 | * Revision 1.77 2005/11/17 23:34:36 hristov |
69 | * Corrected logics | |
70 | * | |
f74a631d | 71 | * Revision 1.76 2005/11/17 22:29:12 hristov |
72 | * Faster version, no attempt to match tracks outside the PHOS acceptance | |
73 | * | |
0d9aa319 | 74 | * Revision 1.75 2005/11/17 12:35:27 hristov |
75 | * Use references instead of objects. Avoid to create objects when they are not really needed | |
76 | * | |
7b51037f | 77 | * Revision 1.74 2005/07/08 14:01:36 hristov |
78 | * Tracking in non-uniform nmagnetic field (Yu.Belikov) | |
79 | * | |
c84a5e9e | 80 | * Revision 1.73 2005/05/28 14:19:05 schutz |
81 | * Compilation warnings fixed by T.P. | |
82 | * | |
702ab87e | 83 | */ |
84 | ||
d15a28e7 | 85 | //_________________________________________________________________________ |
b2a60966 | 86 | // Implementation version 1 of algorithm class to construct PHOS track segments |
f035f6ce | 87 | // Track segment for PHOS is list of |
194f9939 | 88 | // EMC RecPoint + (possibly) CPV RecPoint |
a4e98857 | 89 | // To find TrackSegments we do the following: |
90 | // for each EMC RecPoints we look at | |
194f9939 | 91 | // CPV RecPoints in the radious fRcpv. |
a4e98857 | 92 | // If there is such a CPV RecPoint, |
194f9939 | 93 | // we make "Link" it is just indexes of EMC and CPV RecPoint and distance |
a4e98857 | 94 | // between them in the PHOS plane. |
95 | // Then we sort "Links" and starting from the | |
96 | // least "Link" pointing to the unassined EMC and CPV RecPoints assing them to | |
97 | // new TrackSegment. | |
194f9939 | 98 | // If there is no CPV RecPoint we make TrackSegment |
a4e98857 | 99 | // consisting from EMC alone. There is no TrackSegments without EMC RecPoint. |
f444a19f | 100 | //// In principle this class should be called from AliPHOSReconstructor, but |
a4e98857 | 101 | // one can use it as well in standalone mode. |
102 | // Use case: | |
fc12304f | 103 | // root [0] AliPHOSTrackSegmentMakerv1 * t = new AliPHOSTrackSegmentMaker("galice.root", "tracksegmentsname", "recpointsname") |
a4e98857 | 104 | // Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated |
fc12304f | 105 | // // reads gAlice from header file "galice.root", uses recpoints stored in the branch names "recpointsname" (default = "Default") |
106 | // // and saves recpoints in branch named "tracksegmentsname" (default = "recpointsname") | |
a4e98857 | 107 | // root [1] t->ExecuteTask() |
a4e98857 | 108 | // root [3] t->SetTrackSegmentsBranch("max distance 5 cm") |
109 | // root [4] t->ExecuteTask("deb all time") | |
f035f6ce | 110 | // |
fc12304f | 111 | //*-- Author: Dmitri Peressounko (RRC Ki & SUBATECH) & Yves Schutz (SUBATECH) |
b2a60966 | 112 | // |
d15a28e7 | 113 | |
114 | // --- ROOT system --- | |
f96711b8 | 115 | #include "AliMagF.h" |
116 | #include "AliTracker.h" | |
117 | #include "AliGeomManager.h" | |
118 | #include "AliCluster.h" | |
119 | #include "AliKalmanTrack.h" | |
120 | #include "AliGlobalQADataMaker.h" | |
121 | ||
122 | #include "TVector3.h" | |
2731cd1e | 123 | #include "TTree.h" |
2731cd1e | 124 | #include "TBenchmark.h" |
d15a28e7 | 125 | |
21cd0c07 | 126 | // --- Standard library --- |
194f9939 | 127 | #include "Riostream.h" |
d15a28e7 | 128 | // --- AliRoot header files --- |
e957fea8 | 129 | #include "AliPHOSGeometry.h" |
d15a28e7 | 130 | #include "AliPHOSTrackSegmentMakerv1.h" |
131 | #include "AliPHOSTrackSegment.h" | |
132 | #include "AliPHOSLink.h" | |
af885e0f | 133 | #include "AliESDEvent.h" |
aa0b9641 | 134 | #include "AliESDtrack.h" |
9a2cdbdf | 135 | #include "AliPHOSEmcRecPoint.h" |
136 | #include "AliPHOSCpvRecPoint.h" | |
96351742 | 137 | #include "AliLog.h" |
f96711b8 | 138 | #include "AliMagF.h" |
d15a28e7 | 139 | |
140 | ClassImp( AliPHOSTrackSegmentMakerv1) | |
141 | ||
142 | ||
143 | //____________________________________________________________________________ | |
3663622c | 144 | AliPHOSTrackSegmentMakerv1::AliPHOSTrackSegmentMakerv1() : |
145 | AliPHOSTrackSegmentMaker(), | |
146 | fDefaultInit(kTRUE), | |
147 | fWrite(kFALSE), | |
148 | fNTrackSegments(0), | |
149 | fRcpv(0.f), | |
150 | fRtpc(0.f), | |
ddd1a39c | 151 | fVtx(0.f), |
3663622c | 152 | fLinkUpArray(0), |
153 | fEmcFirst(0), | |
154 | fEmcLast(0), | |
155 | fCpvFirst(0), | |
156 | fCpvLast(0), | |
157 | fModule(0), | |
9a2cdbdf | 158 | fTrackSegments(NULL) |
d15a28e7 | 159 | { |
7b7c1533 | 160 | // default ctor (to be used mainly by Streamer) |
8d0f3f77 | 161 | InitParameters() ; |
d15a28e7 | 162 | } |
7b7c1533 | 163 | |
9f616d61 | 164 | //____________________________________________________________________________ |
9a2cdbdf | 165 | AliPHOSTrackSegmentMakerv1::AliPHOSTrackSegmentMakerv1(AliPHOSGeometry *geom) : |
166 | AliPHOSTrackSegmentMaker(geom), | |
3663622c | 167 | fDefaultInit(kFALSE), |
168 | fWrite(kFALSE), | |
169 | fNTrackSegments(0), | |
170 | fRcpv(0.f), | |
171 | fRtpc(0.f), | |
ddd1a39c | 172 | fVtx(0.f), |
3663622c | 173 | fLinkUpArray(0), |
174 | fEmcFirst(0), | |
175 | fEmcLast(0), | |
176 | fCpvFirst(0), | |
177 | fCpvLast(0), | |
178 | fModule(0), | |
9a2cdbdf | 179 | fTrackSegments(NULL) |
2731cd1e | 180 | { |
181 | // ctor | |
8d0f3f77 | 182 | InitParameters() ; |
7b7c1533 | 183 | Init() ; |
aa0b9641 | 184 | fESD = 0; |
2731cd1e | 185 | } |
98cbd830 | 186 | |
3663622c | 187 | |
188 | AliPHOSTrackSegmentMakerv1::AliPHOSTrackSegmentMakerv1(const AliPHOSTrackSegmentMakerv1 & tsm) : | |
189 | AliPHOSTrackSegmentMaker(tsm), | |
190 | fDefaultInit(kFALSE), | |
191 | fWrite(kFALSE), | |
192 | fNTrackSegments(0), | |
193 | fRcpv(0.f), | |
194 | fRtpc(0.f), | |
ddd1a39c | 195 | fVtx(0.f), |
3663622c | 196 | fLinkUpArray(0), |
197 | fEmcFirst(0), | |
198 | fEmcLast(0), | |
199 | fCpvFirst(0), | |
200 | fCpvLast(0), | |
201 | fModule(0), | |
9a2cdbdf | 202 | fTrackSegments(NULL) |
3663622c | 203 | { |
204 | // cpy ctor: no implementation yet | |
205 | // requested by the Coding Convention | |
206 | Fatal("cpy ctor", "not implemented") ; | |
207 | } | |
208 | ||
209 | ||
2731cd1e | 210 | //____________________________________________________________________________ |
211 | AliPHOSTrackSegmentMakerv1::~AliPHOSTrackSegmentMakerv1() | |
212 | { | |
213 | // dtor | |
92f521a9 | 214 | // fDefaultInit = kTRUE if TrackSegmentMaker created by default ctor (to get just the parameters) |
88cb7938 | 215 | if (!fDefaultInit) |
216 | delete fLinkUpArray ; | |
9a2cdbdf | 217 | if (fTrackSegments) { |
218 | fTrackSegments->Delete(); | |
219 | delete fTrackSegments; | |
220 | } | |
fc12304f | 221 | } |
222 | ||
d15a28e7 | 223 | //____________________________________________________________________________ |
2731cd1e | 224 | void AliPHOSTrackSegmentMakerv1::FillOneModule() |
9f616d61 | 225 | { |
f035f6ce | 226 | // Finds first and last indexes between which |
227 | // clusters from one PHOS module are | |
88cb7938 | 228 | |
2731cd1e | 229 | //First EMC clusters |
9a2cdbdf | 230 | Int_t totalEmc = fEMCRecPoints->GetEntriesFast() ; |
2731cd1e | 231 | for(fEmcFirst = fEmcLast; (fEmcLast < totalEmc) && |
9a2cdbdf | 232 | ((dynamic_cast<AliPHOSRecPoint *>(fEMCRecPoints->At(fEmcLast)))->GetPHOSMod() == fModule ); |
2731cd1e | 233 | fEmcLast ++) ; |
234 | ||
2731cd1e | 235 | //Now CPV clusters |
9a2cdbdf | 236 | Int_t totalCpv = fCPVRecPoints->GetEntriesFast() ; |
6ad0bfa0 | 237 | |
2731cd1e | 238 | for(fCpvFirst = fCpvLast; (fCpvLast < totalCpv) && |
9a2cdbdf | 239 | ((dynamic_cast<AliPHOSRecPoint *>(fCPVRecPoints->At(fCpvLast)))->GetPHOSMod() == fModule ); |
88cb7938 | 240 | fCpvLast ++) ; |
9688c1dd | 241 | |
d15a28e7 | 242 | } |
7b7c1533 | 243 | |
d15a28e7 | 244 | //____________________________________________________________________________ |
e84d3def | 245 | void AliPHOSTrackSegmentMakerv1::GetDistanceInPHOSPlane(AliPHOSEmcRecPoint * emcClu, |
246 | AliPHOSCpvRecPoint * cpvClu, | |
247 | Int_t &trackindex, | |
248 | Float_t &dx, Float_t &dz) const | |
d15a28e7 | 249 | { |
194f9939 | 250 | // Calculates the distance between the EMC RecPoint and the CPV RecPoint |
e44c41e9 | 251 | // If no CPV, calculates the distance between the EMC RecPoint and the track |
252 | // prolongation to the PHOS module plane. | |
a4e98857 | 253 | // Clusters are sorted in "rows" and "columns" of width 1 cm |
f035f6ce | 254 | |
e84d3def | 255 | // Float_t delta = 1 ; // Width of the rows in sorting of RecPoints (in cm) |
256 | // // if you change this value, change it as well in xxxRecPoint::Compare() | |
194f9939 | 257 | |
e44c41e9 | 258 | if(!cpvClu) { |
96351742 | 259 | |
260 | trackindex = -1; | |
261 | dx=999.; | |
262 | dz=999.; | |
263 | ||
264 | if(!emcClu) { | |
265 | return; | |
266 | } | |
e44c41e9 | 267 | |
f96711b8 | 268 | // *** Start the matching |
269 | Int_t nt=fESD->GetNumberOfTracks(); | |
270 | Int_t iPHOSMod = emcClu->GetPHOSMod() ; | |
271 | //Calculate actual distance to PHOS module | |
272 | TVector3 globaPos ; | |
273 | fGeom->Local2Global(iPHOSMod, 0.,0., globaPos) ; | |
274 | const Double_t rPHOS = globaPos.Pt() ; //Distance to PHOS module | |
275 | const Double_t kYmax = 72.+10. ; //Size of the module (with some reserve) in phi direction | |
276 | const Double_t kZmax = 64.+10. ; //Size of the module (with some reserve) in z direction | |
277 | const Double_t kAlpha= 20./180.*TMath::Pi() ; //TPC sector angular size | |
278 | Double_t minDistance = 1.e6; | |
279 | ||
280 | TMatrixF gmat; | |
281 | TVector3 gposRecPoint; // global (in ALICE frame) position of rec. point | |
282 | emcClu->GetGlobalPosition(gposRecPoint,gmat); | |
283 | Double_t gposTrack[3] ; | |
284 | ||
285 | Double_t bz = GetBz() ; //B-Field for approximate matching | |
286 | Double_t b[3]; | |
287 | for (Int_t i=0; i<nt; i++) { | |
288 | AliESDtrack *esdTrack=fESD->GetTrack(i); | |
289 | ||
290 | // // Skip the tracks having "wrong" status (has to be checked/tuned) | |
291 | // ULong_t status = esdTrack->GetStatus(); | |
292 | // if ((status & AliESDtrack::kTRDout) == 0) continue; | |
293 | // if ((status & AliESDtrack::kTRDrefit) == 1) continue; | |
294 | ||
295 | AliExternalTrackParam t(*esdTrack); | |
296 | Int_t isec=Int_t(t.GetAlpha()/kAlpha); | |
297 | Int_t imod=-isec-2; // PHOS module | |
298 | ||
299 | Double_t y; // Some tracks do not reach the PHOS | |
300 | if (!t.GetYAt(rPHOS,bz,y)) continue; // because of the bending | |
301 | ||
302 | Double_t z; t.GetZAt(rPHOS,bz,z); | |
303 | if (TMath::Abs(z) > kZmax) continue; // Some tracks miss the PHOS in Z | |
304 | ||
305 | Bool_t ok=kTRUE; | |
306 | while (TMath::Abs(y) > kYmax) { // Find the matching module | |
307 | Double_t alp=t.GetAlpha(); | |
308 | if (y > kYmax) { | |
309 | if (!t.Rotate(alp+kAlpha)) {ok=kFALSE; break;} | |
310 | imod--; | |
311 | } else if (y < -kYmax) { | |
312 | if (!t.Rotate(alp-kAlpha)) {ok=kFALSE; break;} | |
313 | imod++; | |
314 | } | |
315 | if (!t.GetYAt(rPHOS,bz,y)) {ok=kFALSE; break;} | |
b2e9b669 | 316 | } |
317 | if (!ok) continue; // Track rotation failed | |
f96711b8 | 318 | |
f96711b8 | 319 | |
b2e9b669 | 320 | if(imod!= iPHOSMod-1) |
321 | continue; //not even approximate coincidence | |
f96711b8 | 322 | |
b2e9b669 | 323 | //t.CorrectForMaterial(...); // Correct for the TOF material, if needed |
324 | t.GetBxByBz(b) ; | |
325 | t.PropagateToBxByBz(rPHOS,b); // Propagate to the matching module | |
326 | t.GetXYZ(gposTrack) ; | |
327 | ||
328 | Double_t ddx = gposTrack[0] - gposRecPoint.X(), ddy = gposTrack[1] - gposRecPoint.Y(), ddz = gposTrack[2] - gposRecPoint.Z(); | |
329 | Double_t d2 = ddx*ddx + ddy*ddy + ddz*ddz; | |
330 | if(d2 < minDistance) { | |
331 | dx = TMath::Sign(TMath::Sqrt(ddx*ddx + ddy*ddy),ddx) ; | |
332 | dz = ddz ; | |
333 | trackindex=i; | |
334 | minDistance=d2 ; | |
335 | } | |
336 | } | |
337 | return ; | |
338 | } | |
f96711b8 | 339 | |
340 | ||
b2e9b669 | 341 | TVector3 emcGlobal; |
342 | fGeom->GetGlobalPHOS((AliPHOSRecPoint*)emcClu,emcGlobal); | |
96351742 | 343 | |
b2e9b669 | 344 | // Radius from IP to current point |
345 | Double_t rEMC = TMath::Abs(emcGlobal.Pt()); | |
96351742 | 346 | |
b2e9b669 | 347 | // Extrapolate the global track direction to EMC |
348 | // and find the closest track | |
96351742 | 349 | |
b2e9b669 | 350 | Int_t nTracks = fESD->GetNumberOfTracks(); |
e44c41e9 | 351 | |
b2e9b669 | 352 | AliESDtrack *track; |
353 | Double_t xyz[] = {-1,-1,-1}; | |
354 | Double_t pxyz[3]; | |
355 | Double_t zEMC,xEMC; | |
356 | Int_t module; | |
357 | TVector3 vecP; | |
358 | TVector3 locClu; | |
359 | ||
360 | Float_t minDistance = 1.e6; | |
361 | Float_t dr; | |
362 | ||
363 | for (Int_t iTrack=0; iTrack<nTracks; iTrack++) { | |
364 | track = fESD->GetTrack(iTrack); | |
365 | if (!track->GetXYZAt(rEMC, fESD->GetMagneticField(), xyz)) continue; | |
366 | ||
367 | AliDebug(1,Form("Event %d, iTrack: %d, (%.3f,%.3f,%.3f)", | |
368 | fESD->GetEventNumberInFile(),iTrack,xyz[0],xyz[1],xyz[2])); | |
96351742 | 369 | |
b2e9b669 | 370 | if (track->GetPxPyPzAt(rEMC,fESD->GetMagneticField(),pxyz)) { |
96351742 | 371 | |
b2e9b669 | 372 | vecP.SetXYZ(pxyz[0],pxyz[1],pxyz[2]); |
373 | fGeom->ImpactOnEmc(xyz,vecP.Theta(),vecP.Phi(),module,zEMC,xEMC) ; | |
96351742 | 374 | |
b2e9b669 | 375 | if(!module) continue; |
376 | AliDebug(1,Form("\t\tTrack hit PHOS! Module: %d, (x,z)=(%.3f,%.3f)",module,xEMC,zEMC)); | |
96351742 | 377 | |
b2e9b669 | 378 | if(emcClu->GetPHOSMod() != module) continue; |
96351742 | 379 | |
b2e9b669 | 380 | // match track to EMC cluster |
381 | emcClu->GetLocalPosition(locClu); | |
96351742 | 382 | |
b2e9b669 | 383 | Float_t delta_x = xEMC - locClu.X(); |
384 | Float_t delta_z = zEMC - locClu.Z(); | |
385 | dr = TMath::Sqrt(delta_x*delta_x + delta_z*delta_z); | |
386 | AliDebug(1,Form("\tMatch iTrack=%d: (dx,dz)=(%.3f,%.3f)",iTrack,delta_x,delta_z)); | |
96351742 | 387 | |
b2e9b669 | 388 | if(dr<minDistance) { |
389 | trackindex = iTrack; | |
390 | minDistance = dr; | |
391 | dx = delta_x; | |
392 | dz = delta_z; | |
e44c41e9 | 393 | } |
394 | } | |
b2e9b669 | 395 | |
e44c41e9 | 396 | } |
b2e9b669 | 397 | |
398 | if(trackindex>=0) | |
399 | AliDebug(1,Form("\t\tBest match for (xClu,zClu,eClu)=(%.3f,%.3f,%.3f): iTrack=%d, dR=%.3f", | |
400 | locClu.X(),locClu.Z(),emcClu->GetEnergy(), | |
401 | trackindex,TMath::Sqrt(dx*dx+dz*dz))); | |
402 | return; | |
e44c41e9 | 403 | |
404 | Float_t distance2Track = fRtpc ; | |
405 | ||
194f9939 | 406 | trackindex = -1 ; // closest track within fRCpv |
b2e9b669 | 407 | |
aa0b9641 | 408 | TVector3 vecEmc ; // Local position of EMC recpoint |
e84d3def | 409 | TVector3 vecPloc ; // Momentum direction at CPV plain |
2731cd1e | 410 | |
194f9939 | 411 | //toofar = kTRUE ; |
e84d3def | 412 | if(emcClu->GetPHOSMod() != cpvClu->GetPHOSMod()){ |
413 | dx=999. ; | |
414 | dz=999. ; | |
415 | return ; | |
416 | } | |
b2e9b669 | 417 | |
e84d3def | 418 | emcClu->GetLocalPosition(vecEmc) ; |
b2e9b669 | 419 | |
e84d3def | 420 | Double_t xCPV,zCPV ; //EMC-projected coordinates of CPV cluster |
421 | TVector3 cpvGlobal; // Global position of the CPV recpoint | |
9a2cdbdf | 422 | fGeom->GetGlobalPHOS((AliPHOSRecPoint*)cpvClu,cpvGlobal); |
e84d3def | 423 | Double_t vtxCPV[3]={cpvGlobal.X(),cpvGlobal.Y(),cpvGlobal.Z()} ; |
78881c42 | 424 | Int_t dummyMod ; |
e84d3def | 425 | |
426 | if (fESD == 0x0) { | |
b2e9b669 | 427 | //if no track information available, assume straight line from IP to emcal |
428 | fGeom->ImpactOnEmc(vtxCPV,cpvGlobal.Theta(),cpvGlobal.Phi(),dummyMod,zCPV,xCPV) ; | |
429 | dx=xCPV - vecEmc.X() ; | |
430 | dz=zCPV - vecEmc.Z() ; | |
431 | return ; | |
e84d3def | 432 | } |
b2e9b669 | 433 | |
e84d3def | 434 | //if there is ESD try to correct distance using TPC information on particle direct in CPV |
435 | if (fESD != 0x0) { | |
0d9aa319 | 436 | |
e84d3def | 437 | Double_t rCPV = cpvGlobal.Pt() ;// Radius from IP to current point |
438 | ||
439 | // Extrapolate the global track direction if any to CPV and find the closest track | |
440 | Int_t nTracks = fESD->GetNumberOfTracks(); | |
441 | Int_t iClosestTrack = -1; | |
442 | Double_t minDistance = 1.e6; | |
443 | TVector3 inPHOS ; | |
444 | ||
445 | AliESDtrack *track; | |
446 | Double_t xyz[3] ; | |
447 | Double_t pxyz[3]; | |
448 | for (Int_t iTrack=0; iTrack<nTracks; iTrack++) { | |
449 | track = fESD->GetTrack(iTrack); | |
450 | if (!track->GetXYZAt(rCPV, fESD->GetMagneticField(), xyz)) | |
b2e9b669 | 451 | continue; //track coord on the cylinder of PHOS radius |
e84d3def | 452 | if ((TMath::Abs(xyz[0])+TMath::Abs(xyz[1])+TMath::Abs(xyz[2]))<=0) |
b2e9b669 | 453 | continue; |
e84d3def | 454 | //Check if this track hits PHOS |
455 | inPHOS.SetXYZ(xyz[0],xyz[1],xyz[2]); | |
456 | distance2Track = inPHOS.Angle(cpvGlobal) ; | |
457 | // Find the closest track to the CPV recpoint | |
458 | if (distance2Track < minDistance) { | |
b2e9b669 | 459 | minDistance = distance2Track; |
460 | iClosestTrack = iTrack; | |
aa0b9641 | 461 | } |
e84d3def | 462 | } |
aa0b9641 | 463 | |
e84d3def | 464 | if (iClosestTrack != -1) { |
465 | track = fESD->GetTrack(iClosestTrack); | |
466 | if (track->GetPxPyPzAt(rCPV, fESD->GetMagneticField(), pxyz)) { // track momentum ibid. | |
467 | vecP.SetXYZ(pxyz[0],pxyz[1],pxyz[2]); | |
9a2cdbdf | 468 | fGeom->ImpactOnEmc(vtxCPV,vecP.Theta(),vecP.Phi(),dummyMod,zCPV,xCPV) ; |
aa0b9641 | 469 | } |
e84d3def | 470 | } |
194f9939 | 471 | |
e84d3def | 472 | if(minDistance < fRtpc ){ |
473 | trackindex = iClosestTrack ; | |
aa0b9641 | 474 | } |
bfc17d18 | 475 | } |
e84d3def | 476 | if(trackindex!=-1){ |
78881c42 | 477 | // If the closest global track is found, calculate EMC-CPV distance from it |
e84d3def | 478 | dx=xCPV - vecEmc.X() ; |
479 | dz=zCPV - vecEmc.Z() ; | |
480 | } | |
481 | else{ | |
78881c42 | 482 | // If no global track was found, just take the nearest CPV point |
9a2cdbdf | 483 | fGeom->ImpactOnEmc(vtxCPV,cpvGlobal.Theta(),cpvGlobal.Phi(),dummyMod,zCPV,xCPV) ; |
78881c42 | 484 | dx=xCPV - vecEmc.X() ; |
485 | dz=zCPV - vecEmc.Z() ; | |
e84d3def | 486 | } |
487 | return ; | |
d15a28e7 | 488 | } |
7b7c1533 | 489 | //____________________________________________________________________________ |
490 | void AliPHOSTrackSegmentMakerv1::Init() | |
491 | { | |
492 | // Make all memory allocations that are not possible in default constructor | |
493 | ||
7b7c1533 | 494 | fLinkUpArray = new TClonesArray("AliPHOSLink", 1000); |
9a2cdbdf | 495 | fTrackSegments = new TClonesArray("AliPHOSTrackSegment",100); |
496 | fTrackSegments->SetName("TRACKS"); | |
7b7c1533 | 497 | } |
498 | ||
8d0f3f77 | 499 | //____________________________________________________________________________ |
500 | void AliPHOSTrackSegmentMakerv1::InitParameters() | |
501 | { | |
e957fea8 | 502 | //Initializes parameters |
743cb288 | 503 | fRcpv = 10. ; |
504 | fRtpc = 4. ; | |
8d0f3f77 | 505 | fEmcFirst = 0 ; |
506 | fEmcLast = 0 ; | |
507 | fCpvFirst = 0 ; | |
508 | fCpvLast = 0 ; | |
509 | fLinkUpArray = 0 ; | |
adcca1e6 | 510 | fWrite = kTRUE ; |
8d0f3f77 | 511 | } |
512 | ||
513 | ||
d15a28e7 | 514 | //____________________________________________________________________________ |
baef0810 | 515 | void AliPHOSTrackSegmentMakerv1::MakeLinks()const |
d15a28e7 | 516 | { |
194f9939 | 517 | // Finds distances (links) between all EMC and CPV clusters, |
fbf811ec | 518 | // which are not further apart from each other than fRcpv |
f035f6ce | 519 | // and sort them in accordance with this distance |
9688c1dd | 520 | |
2731cd1e | 521 | fLinkUpArray->Clear() ; |
2731cd1e | 522 | |
2bb500e5 | 523 | AliPHOSCpvRecPoint * cpv ; |
92862013 | 524 | AliPHOSEmcRecPoint * emcclu ; |
28c3a259 | 525 | |
d15a28e7 | 526 | Int_t iLinkUp = 0 ; |
527 | ||
28c3a259 | 528 | Int_t iEmcRP; |
2731cd1e | 529 | for(iEmcRP = fEmcFirst; iEmcRP < fEmcLast; iEmcRP++ ) { |
9a2cdbdf | 530 | emcclu = dynamic_cast<AliPHOSEmcRecPoint *>(fEMCRecPoints->At(iEmcRP)) ; |
2731cd1e | 531 | |
194f9939 | 532 | //Bool_t toofar ; |
2731cd1e | 533 | Int_t iCpv = 0 ; |
534 | for(iCpv = fCpvFirst; iCpv < fCpvLast;iCpv++ ) { | |
28c3a259 | 535 | |
9a2cdbdf | 536 | cpv = dynamic_cast<AliPHOSCpvRecPoint *>(fCPVRecPoints->At(iCpv)) ; |
194f9939 | 537 | Int_t track = -1 ; |
e84d3def | 538 | Float_t dx,dz ; |
539 | GetDistanceInPHOSPlane(emcclu, cpv, track,dx,dz) ; | |
540 | if(TMath::Sqrt(dx*dx+dz*dz) < fRcpv ){ | |
541 | new ((*fLinkUpArray)[iLinkUp++]) AliPHOSLink(dx, dz, iEmcRP, iCpv, track) ; | |
28c3a259 | 542 | } |
d15a28e7 | 543 | } |
28c3a259 | 544 | } |
d15a28e7 | 545 | |
9688c1dd | 546 | fLinkUpArray->Sort() ; //first links with smallest distances |
d15a28e7 | 547 | } |
28c3a259 | 548 | |
d15a28e7 | 549 | //____________________________________________________________________________ |
2731cd1e | 550 | void AliPHOSTrackSegmentMakerv1::MakePairs() |
6ad0bfa0 | 551 | { |
f035f6ce | 552 | // Using the previously made list of "links", we found the smallest link - i.e. |
a4e98857 | 553 | // link with the least distance between EMC and CPV and pointing to still |
f035f6ce | 554 | // unassigned RecParticles. We assign these RecPoints to TrackSegment and |
555 | // remove them from the list of "unassigned". | |
88cb7938 | 556 | |
01a599c9 | 557 | //Make arrays to mark clusters already chosen |
2731cd1e | 558 | Int_t * emcExist = 0; |
559 | if(fEmcLast > fEmcFirst) | |
560 | emcExist = new Int_t[fEmcLast-fEmcFirst] ; | |
561 | ||
562 | Int_t index; | |
563 | for(index = 0; index <fEmcLast-fEmcFirst; index ++) | |
564 | emcExist[index] = 1 ; | |
565 | ||
566 | Bool_t * cpvExist = 0; | |
567 | if(fCpvLast > fCpvFirst) | |
568 | cpvExist = new Bool_t[fCpvLast-fCpvFirst] ; | |
569 | for(index = 0; index <fCpvLast-fCpvFirst; index ++) | |
570 | cpvExist[index] = kTRUE ; | |
571 | ||
2731cd1e | 572 | |
573 | // Finds the smallest links and makes pairs of CPV and EMC clusters with smallest distance | |
2731cd1e | 574 | TIter nextUp(fLinkUpArray) ; |
d15a28e7 | 575 | |
d15a28e7 | 576 | AliPHOSLink * linkUp ; |
9688c1dd | 577 | |
2bb500e5 | 578 | AliPHOSCpvRecPoint * nullpointer = 0 ; |
9688c1dd | 579 | |
29b077b5 | 580 | while ( (linkUp = static_cast<AliPHOSLink *>(nextUp()) ) ){ |
9688c1dd | 581 | |
194f9939 | 582 | if(emcExist[linkUp->GetEmc()-fEmcFirst] != -1){ |
d15a28e7 | 583 | |
194f9939 | 584 | if(cpvExist[linkUp->GetCpv()-fCpvFirst]){ //CPV still exist |
d7ddbb70 | 585 | Float_t dx,dz ; |
586 | linkUp->GetXZ(dx,dz) ; | |
9a2cdbdf | 587 | new ((* fTrackSegments)[fNTrackSegments]) |
588 | AliPHOSTrackSegment(dynamic_cast<AliPHOSEmcRecPoint *>(fEMCRecPoints->At(linkUp->GetEmc())) , | |
589 | dynamic_cast<AliPHOSCpvRecPoint *>(fCPVRecPoints->At(linkUp->GetCpv())) , | |
d7ddbb70 | 590 | linkUp->GetTrack(),dx,dz) ; |
194f9939 | 591 | |
9a2cdbdf | 592 | (dynamic_cast<AliPHOSTrackSegment *>(fTrackSegments->At(fNTrackSegments)))->SetIndexInList(fNTrackSegments); |
88cb7938 | 593 | fNTrackSegments++ ; |
88cb7938 | 594 | emcExist[linkUp->GetEmc()-fEmcFirst] = -1 ; //Mark emc that Cpv was found |
595 | //mark CPV recpoint as already used | |
194f9939 | 596 | cpvExist[linkUp->GetCpv()-fCpvFirst] = kFALSE ; |
597 | } //if CpvUp still exist | |
28c3a259 | 598 | } |
88cb7938 | 599 | } |
28c3a259 | 600 | |
194f9939 | 601 | //look through emc recPoints left without CPV |
2731cd1e | 602 | if(emcExist){ //if there is emc rec point |
603 | Int_t iEmcRP ; | |
604 | for(iEmcRP = 0; iEmcRP < fEmcLast-fEmcFirst ; iEmcRP++ ){ | |
605 | if(emcExist[iEmcRP] > 0 ){ | |
e44c41e9 | 606 | Int_t track = -1 ; |
607 | Float_t dx,dz ; | |
608 | AliPHOSEmcRecPoint *emcclu = dynamic_cast<AliPHOSEmcRecPoint *>(fEMCRecPoints->At(iEmcRP+fEmcFirst)); | |
609 | GetDistanceInPHOSPlane(emcclu, 0, track,dx,dz); | |
610 | if(track<0) | |
611 | new ((*fTrackSegments)[fNTrackSegments]) AliPHOSTrackSegment(emcclu,nullpointer) ; | |
612 | else | |
613 | new ((*fTrackSegments)[fNTrackSegments]) AliPHOSTrackSegment(emcclu,0,track,dx,dz); | |
614 | (dynamic_cast<AliPHOSTrackSegment *>(fTrackSegments->At(fNTrackSegments)))->SetIndexInList(fNTrackSegments); | |
615 | fNTrackSegments++; | |
2731cd1e | 616 | } |
d15a28e7 | 617 | } |
d15a28e7 | 618 | } |
780a31c1 | 619 | delete [] emcExist ; |
620 | delete [] cpvExist ; | |
d15a28e7 | 621 | } |
622 | ||
623 | //____________________________________________________________________________ | |
9a2cdbdf | 624 | void AliPHOSTrackSegmentMakerv1::Clusters2TrackSegments(Option_t *option) |
d15a28e7 | 625 | { |
9a2cdbdf | 626 | // Steering method to perform track segment construction for the current event |
627 | // Returns an array with the found track-segments. | |
88cb7938 | 628 | |
2731cd1e | 629 | if(strstr(option,"tim")) |
b3f97575 | 630 | gBenchmark->Start("PHOSTSMaker"); |
7b7c1533 | 631 | |
632 | if(strstr(option,"print")) { | |
88cb7938 | 633 | Print() ; |
7b7c1533 | 634 | return ; |
635 | } | |
88cb7938 | 636 | |
9a2cdbdf | 637 | //Make some initializations |
638 | fNTrackSegments = 0 ; | |
639 | fEmcFirst = 0 ; | |
640 | fEmcLast = 0 ; | |
641 | fCpvFirst = 0 ; | |
642 | fCpvLast = 0 ; | |
55ea5766 | 643 | |
9a2cdbdf | 644 | fTrackSegments->Clear(); |
7b7c1533 | 645 | |
9a2cdbdf | 646 | // if(!ReadRecPoints(ievent)) continue; //reads RecPoints for event ievent |
f96711b8 | 647 | |
9a2cdbdf | 648 | for(fModule = 1; fModule <= fGeom->GetNModules() ; fModule++ ) { |
649 | FillOneModule() ; | |
650 | MakeLinks() ; | |
651 | MakePairs() ; | |
2731cd1e | 652 | } |
9a2cdbdf | 653 | |
654 | if(strstr(option,"deb")) | |
655 | PrintTrackSegments(option); | |
656 | ||
2731cd1e | 657 | if(strstr(option,"tim")){ |
658 | gBenchmark->Stop("PHOSTSMaker"); | |
9a2cdbdf | 659 | Info("Exec", "took %f seconds for making TS", |
660 | gBenchmark->GetCpuTime("PHOSTSMaker")); | |
661 | } | |
d15a28e7 | 662 | } |
7b7c1533 | 663 | |
d15a28e7 | 664 | //____________________________________________________________________________ |
702ab87e | 665 | void AliPHOSTrackSegmentMakerv1::Print(const Option_t *)const |
a4e98857 | 666 | { |
baef0810 | 667 | // Print TrackSegmentMaker parameters |
668 | ||
21cd0c07 | 669 | TString message("") ; |
7b7c1533 | 670 | if( strcmp(GetName(), "") != 0 ) { |
21cd0c07 | 671 | message = "\n======== AliPHOSTrackSegmentMakerv1 ========\n" ; |
672 | message += "Making Track segments\n" ; | |
673 | message += "with parameters:\n" ; | |
194f9939 | 674 | message += " Maximal EMC - CPV distance (cm) %f\n" ; |
21cd0c07 | 675 | message += "============================================\n" ; |
676 | Info("Print", message.Data(),fRcpv) ; | |
2731cd1e | 677 | } |
678 | else | |
21cd0c07 | 679 | Info("Print", "AliPHOSTrackSegmentMakerv1 not initialized ") ; |
d15a28e7 | 680 | } |
7b7c1533 | 681 | |
2731cd1e | 682 | //____________________________________________________________________________ |
a4e98857 | 683 | void AliPHOSTrackSegmentMakerv1::PrintTrackSegments(Option_t * option) |
684 | { | |
f035f6ce | 685 | // option deb - prints # of found TrackSegments |
686 | // option deb all - prints as well indexed of found RecParticles assigned to the TS | |
9688c1dd | 687 | |
88cb7938 | 688 | Info("PrintTrackSegments", "Results from TrackSegmentMaker:") ; |
9a2cdbdf | 689 | printf(" Found %d TrackSegments\n", fTrackSegments->GetEntriesFast() ); |
88cb7938 | 690 | |
2731cd1e | 691 | if(strstr(option,"all")) { // printing found TS |
88cb7938 | 692 | printf("TrackSegment # EMC RP# CPV RP#\n") ; |
2731cd1e | 693 | Int_t index; |
9a2cdbdf | 694 | for (index = 0 ; index <fTrackSegments->GetEntriesFast() ; index++) { |
695 | AliPHOSTrackSegment * ts = (AliPHOSTrackSegment * )fTrackSegments->At(index) ; | |
88cb7938 | 696 | printf(" %d %d %d \n", ts->GetIndexInList(), ts->GetEmcIndex(), ts->GetCpvIndex() ) ; |
2731cd1e | 697 | } |
d15a28e7 | 698 | } |
2731cd1e | 699 | } |
f96711b8 | 700 | //__________________________________________________________________________ |
701 | Double_t AliPHOSTrackSegmentMakerv1::GetBz()const | |
702 | { | |
703 | Double_t kAlmost0Field=1.e-13; | |
704 | AliMagF* fld = (AliMagF*)TGeoGlobalMagField::Instance()->GetField(); | |
705 | if (!fld) return 0.5*kAlmost0Field; | |
706 | Double_t bz = fld->SolenoidField(); | |
707 | return TMath::Sign(0.5*kAlmost0Field,bz) + bz; | |
708 | } | |
709 | //__________________________________________________________________________ | |
710 | void AliPHOSTrackSegmentMakerv1::GetBxByBz(const Double_t r[3], Double_t b[3])const { | |
711 | //------------------------------------------------------------------ | |
712 | // Returns Bx, By and Bz (kG) at the point "r" . | |
713 | //------------------------------------------------------------------ | |
714 | Double_t kAlmost0Field=1.e-13; | |
715 | AliMagF* fld = (AliMagF*)TGeoGlobalMagField::Instance()->GetField(); | |
716 | if (!fld) { | |
717 | b[0] = b[1] = 0.; | |
718 | b[2] = 0.5*kAlmost0Field; | |
719 | return; | |
720 | } | |
721 | ||
722 | if (fld->IsUniform()) { | |
723 | b[0] = b[1] = 0.; | |
724 | b[2] = fld->SolenoidField(); | |
725 | } else { | |
726 | fld->Field(r,b); | |
727 | } | |
728 | b[2] = (TMath::Sign(0.5*kAlmost0Field,b[2]) + b[2]); | |
729 | return; | |
730 | } | |
731 | ||
732 |