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be9c5115 | 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 | ||
acd84897 | 16 | /* $Id$ */ |
fb17acd4 | 17 | |
be9c5115 | 18 | //------------------------------------------------------------------------- |
19 | // Implementation of the AliTracker class | |
9b83b8cc | 20 | // that is the base for AliTPCtracker, AliITStrackerV2 and AliTRDtracker |
21 | // Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch | |
be9c5115 | 22 | //------------------------------------------------------------------------- |
7d0f8548 | 23 | #include <TClass.h> |
be9c5115 | 24 | #include <TMath.h> |
e23a38cb | 25 | #include <TH1F.h> |
6e440ee5 | 26 | #include <TGeoManager.h> |
9efabefd | 27 | #include <TGeoMatrix.h> |
be9c5115 | 28 | |
7b5ef2e6 | 29 | #include "AliMagF.h" |
be9c5115 | 30 | #include "AliTracker.h" |
e23a38cb | 31 | #include "AliGeomManager.h" |
c84a5e9e | 32 | #include "AliCluster.h" |
7d0f8548 | 33 | #include "AliKalmanTrack.h" |
eca4fa66 | 34 | #include "AliGlobalQADataMaker.h" |
41377c29 | 35 | |
6e440ee5 | 36 | extern TGeoManager *gGeoManager; |
37 | ||
e23a38cb | 38 | Bool_t AliTracker::fFillResiduals=kFALSE; |
57acd2d2 | 39 | TObjArray **AliTracker::fResiduals=NULL; |
40 | AliRecoParam::EventSpecie_t AliTracker::fEventSpecie=AliRecoParam::kDefault; | |
3b242889 | 41 | |
be9c5115 | 42 | ClassImp(AliTracker) |
43 | ||
3b242889 | 44 | AliTracker::AliTracker(): |
fe12e09c | 45 | TObject(), |
3b242889 | 46 | fX(0), |
47 | fY(0), | |
48 | fZ(0), | |
49 | fSigmaX(0.005), | |
50 | fSigmaY(0.005), | |
57acd2d2 | 51 | fSigmaZ(0.010) |
3b242889 | 52 | { |
53 | //-------------------------------------------------------------------- | |
54 | // The default constructor. | |
55 | //-------------------------------------------------------------------- | |
f7a1cc68 | 56 | if (!TGeoGlobalMagField::Instance()->GetField()) |
57 | AliWarning("Field map is not set."); | |
3b242889 | 58 | } |
59 | ||
fe12e09c | 60 | //__________________________________________________________________________ |
61 | AliTracker::AliTracker(const AliTracker &atr): | |
62 | TObject(atr), | |
63 | fX(atr.fX), | |
64 | fY(atr.fY), | |
65 | fZ(atr.fZ), | |
66 | fSigmaX(atr.fSigmaX), | |
67 | fSigmaY(atr.fSigmaY), | |
68 | fSigmaZ(atr.fSigmaZ) | |
69 | { | |
70 | //-------------------------------------------------------------------- | |
71 | // The default constructor. | |
72 | //-------------------------------------------------------------------- | |
f7a1cc68 | 73 | if (!TGeoGlobalMagField::Instance()->GetField()) |
74 | AliWarning("Field map is not set."); | |
fe12e09c | 75 | } |
76 | ||
77 | //__________________________________________________________________________ | |
f7a1cc68 | 78 | Double_t AliTracker::GetBz() |
79 | { | |
80 | AliMagF* fld = (AliMagF*)TGeoGlobalMagField::Instance()->GetField(); | |
663c89cf | 81 | if (!fld) return 0.5*kAlmost0Field; |
02d77919 | 82 | Double_t bz = fld->SolenoidField(); |
663c89cf | 83 | return TMath::Sign(0.5*kAlmost0Field,bz) + bz; |
f7a1cc68 | 84 | } |
7d0f8548 | 85 | |
f7a1cc68 | 86 | //__________________________________________________________________________ |
87 | Double_t AliTracker::GetBz(const Double_t *r) { | |
88 | //------------------------------------------------------------------ | |
89 | // Returns Bz (kG) at the point "r" . | |
90 | //------------------------------------------------------------------ | |
91 | AliMagF* fld = (AliMagF*)TGeoGlobalMagField::Instance()->GetField(); | |
663c89cf | 92 | if (!fld) return 0.5*kAlmost0Field; |
02d77919 | 93 | Double_t bz = fld->GetBz(r); |
663c89cf | 94 | return TMath::Sign(0.5*kAlmost0Field,bz) + bz; |
7d0f8548 | 95 | } |
96 | ||
f7920267 | 97 | //__________________________________________________________________________ |
98 | void AliTracker::GetBxByBz(const Double_t r[3], Double_t b[3]) { | |
99 | //------------------------------------------------------------------ | |
100 | // Returns Bx, By and Bz (kG) at the point "r" . | |
101 | //------------------------------------------------------------------ | |
102 | AliMagF* fld = (AliMagF*)TGeoGlobalMagField::Instance()->GetField(); | |
103 | if (!fld) { | |
104 | b[0] = b[1] = 0.; | |
105 | b[2] = 0.5*kAlmost0Field; | |
106 | return; | |
107 | } | |
108 | ||
109 | if (fld->IsUniform()) { | |
110 | b[0] = b[1] = 0.; | |
111 | b[2] = fld->SolenoidField(); | |
112 | } else { | |
113 | fld->Field(r,b); | |
114 | } | |
115 | b[2] = (TMath::Sign(0.5*kAlmost0Field,b[2]) + b[2]); | |
116 | return; | |
117 | } | |
118 | ||
2f4c86d7 | 119 | //__________________________________________________________________________ |
120 | void AliTracker::FillClusterArray(TObjArray* /*array*/) const | |
121 | { | |
122 | // Publishes all pointers to clusters known to the tracker into the | |
123 | // passed object array. | |
124 | // The ownership is not transfered - the caller is not expected to delete | |
125 | // the clusters. | |
126 | ||
127 | AliWarning("should be overriden by a sub-class."); | |
128 | } | |
129 | ||
be9c5115 | 130 | //__________________________________________________________________________ |
131 | void AliTracker::CookLabel(AliKalmanTrack *t, Float_t wrong) const { | |
132 | //-------------------------------------------------------------------- | |
133 | //This function "cooks" a track label. If label<0, this track is fake. | |
134 | //-------------------------------------------------------------------- | |
135 | Int_t noc=t->GetNumberOfClusters(); | |
9b4aca55 | 136 | if (noc<1) return; |
be9c5115 | 137 | Int_t *lb=new Int_t[noc]; |
138 | Int_t *mx=new Int_t[noc]; | |
139 | AliCluster **clusters=new AliCluster*[noc]; | |
140 | ||
141 | Int_t i; | |
142 | for (i=0; i<noc; i++) { | |
143 | lb[i]=mx[i]=0; | |
144 | Int_t index=t->GetClusterIndex(i); | |
145 | clusters[i]=GetCluster(index); | |
146 | } | |
147 | ||
148 | Int_t lab=123456789; | |
149 | for (i=0; i<noc; i++) { | |
150 | AliCluster *c=clusters[i]; | |
151 | lab=TMath::Abs(c->GetLabel(0)); | |
152 | Int_t j; | |
153 | for (j=0; j<noc; j++) if (lb[j]==lab || mx[j]==0) break; | |
154 | lb[j]=lab; | |
155 | (mx[j])++; | |
156 | } | |
157 | ||
158 | Int_t max=0; | |
159 | for (i=0; i<noc; i++) if (mx[i]>max) {max=mx[i]; lab=lb[i];} | |
160 | ||
161 | for (i=0; i<noc; i++) { | |
162 | AliCluster *c=clusters[i]; | |
babd135a | 163 | //if (TMath::Abs(c->GetLabel(1)) == lab || |
164 | // TMath::Abs(c->GetLabel(2)) == lab ) max++; | |
165 | if (TMath::Abs(c->GetLabel(0)!=lab)) | |
166 | if (TMath::Abs(c->GetLabel(1)) == lab || | |
167 | TMath::Abs(c->GetLabel(2)) == lab ) max++; | |
be9c5115 | 168 | } |
169 | ||
170 | if ((1.- Float_t(max)/noc) > wrong) lab=-lab; | |
babd135a | 171 | t->SetFakeRatio((1.- Float_t(max)/noc)); |
be9c5115 | 172 | t->SetLabel(lab); |
173 | ||
174 | delete[] lb; | |
175 | delete[] mx; | |
176 | delete[] clusters; | |
177 | } | |
178 | ||
179 | //____________________________________________________________________________ | |
180 | void AliTracker::UseClusters(const AliKalmanTrack *t, Int_t from) const { | |
181 | //------------------------------------------------------------------ | |
182 | //This function marks clusters associated with the track. | |
183 | //------------------------------------------------------------------ | |
184 | Int_t noc=t->GetNumberOfClusters(); | |
185 | for (Int_t i=from; i<noc; i++) { | |
186 | Int_t index=t->GetClusterIndex(i); | |
187 | AliCluster *c=GetCluster(index); | |
188 | c->Use(); | |
189 | } | |
190 | } | |
7b5ef2e6 | 191 | |
f7a1cc68 | 192 | Double_t AliTracker::MeanMaterialBudget(const Double_t *start, const Double_t *end, Double_t *mparam) |
6e440ee5 | 193 | { |
194 | // | |
195 | // Calculate mean material budget and material properties between | |
196 | // the points "start" and "end". | |
197 | // | |
198 | // "mparam" - parameters used for the energy and multiple scattering | |
199 | // corrections: | |
200 | // | |
201 | // mparam[0] - mean density: sum(x_i*rho_i)/sum(x_i) [g/cm3] | |
202 | // mparam[1] - equivalent rad length fraction: sum(x_i/X0_i) [adimensional] | |
203 | // mparam[2] - mean A: sum(x_i*A_i)/sum(x_i) [adimensional] | |
204 | // mparam[3] - mean Z: sum(x_i*Z_i)/sum(x_i) [adimensional] | |
205 | // mparam[4] - length: sum(x_i) [cm] | |
206 | // mparam[5] - Z/A mean: sum(x_i*Z_i/A_i)/sum(x_i) [adimensional] | |
207 | // mparam[6] - number of boundary crosses | |
208 | // | |
0c4ea33b | 209 | // Origin: Marian Ivanov, Marian.Ivanov@cern.ch |
210 | // | |
211 | // Corrections and improvements by | |
212 | // Andrea Dainese, Andrea.Dainese@lnl.infn.it, | |
213 | // Andrei Gheata, Andrei.Gheata@cern.ch | |
214 | // | |
6e440ee5 | 215 | |
216 | mparam[0]=0; mparam[1]=1; mparam[2] =0; mparam[3] =0; | |
217 | mparam[4]=0; mparam[5]=0; mparam[6]=0; | |
218 | // | |
219 | Double_t bparam[6]; // total parameters | |
220 | Double_t lparam[6]; // local parameters | |
221 | ||
222 | for (Int_t i=0;i<6;i++) bparam[i]=0; | |
223 | ||
224 | if (!gGeoManager) { | |
225 | printf("ERROR: no TGeo\n"); | |
226 | return 0.; | |
227 | } | |
228 | // | |
229 | Double_t length; | |
230 | Double_t dir[3]; | |
231 | length = TMath::Sqrt((end[0]-start[0])*(end[0]-start[0])+ | |
232 | (end[1]-start[1])*(end[1]-start[1])+ | |
233 | (end[2]-start[2])*(end[2]-start[2])); | |
234 | mparam[4]=length; | |
235 | if (length<TGeoShape::Tolerance()) return 0.0; | |
236 | Double_t invlen = 1./length; | |
237 | dir[0] = (end[0]-start[0])*invlen; | |
238 | dir[1] = (end[1]-start[1])*invlen; | |
239 | dir[2] = (end[2]-start[2])*invlen; | |
240 | ||
241 | // Initialize start point and direction | |
242 | TGeoNode *currentnode = 0; | |
243 | TGeoNode *startnode = gGeoManager->InitTrack(start, dir); | |
244 | //printf("%s length=%f\n",gGeoManager->GetPath(),length); | |
245 | if (!startnode) { | |
f3b4b060 | 246 | AliErrorClass(Form("start point out of geometry: x %f, y %f, z %f", |
ff0051ed | 247 | start[0],start[1],start[2])); |
6e440ee5 | 248 | return 0.0; |
249 | } | |
250 | TGeoMaterial *material = startnode->GetVolume()->GetMedium()->GetMaterial(); | |
251 | lparam[0] = material->GetDensity(); | |
252 | lparam[1] = material->GetRadLen(); | |
253 | lparam[2] = material->GetA(); | |
254 | lparam[3] = material->GetZ(); | |
255 | lparam[4] = length; | |
256 | lparam[5] = lparam[3]/lparam[2]; | |
257 | if (material->IsMixture()) { | |
258 | TGeoMixture * mixture = (TGeoMixture*)material; | |
259 | lparam[5] =0; | |
260 | Double_t sum =0; | |
261 | for (Int_t iel=0;iel<mixture->GetNelements();iel++){ | |
262 | sum += mixture->GetWmixt()[iel]; | |
263 | lparam[5]+= mixture->GetZmixt()[iel]*mixture->GetWmixt()[iel]/mixture->GetAmixt()[iel]; | |
264 | } | |
265 | lparam[5]/=sum; | |
266 | } | |
267 | ||
268 | // Locate next boundary within length without computing safety. | |
269 | // Propagate either with length (if no boundary found) or just cross boundary | |
270 | gGeoManager->FindNextBoundaryAndStep(length, kFALSE); | |
271 | Double_t step = 0.0; // Step made | |
272 | Double_t snext = gGeoManager->GetStep(); | |
273 | // If no boundary within proposed length, return current density | |
274 | if (!gGeoManager->IsOnBoundary()) { | |
275 | mparam[0] = lparam[0]; | |
276 | mparam[1] = lparam[4]/lparam[1]; | |
277 | mparam[2] = lparam[2]; | |
278 | mparam[3] = lparam[3]; | |
279 | mparam[4] = lparam[4]; | |
280 | return lparam[0]; | |
281 | } | |
282 | // Try to cross the boundary and see what is next | |
283 | Int_t nzero = 0; | |
284 | while (length>TGeoShape::Tolerance()) { | |
285 | currentnode = gGeoManager->GetCurrentNode(); | |
286 | if (snext<2.*TGeoShape::Tolerance()) nzero++; | |
287 | else nzero = 0; | |
288 | if (nzero>3) { | |
289 | // This means navigation has problems on one boundary | |
290 | // Try to cross by making a small step | |
291 | printf("ERROR: cannot cross boundary\n"); | |
292 | mparam[0] = bparam[0]/step; | |
293 | mparam[1] = bparam[1]; | |
294 | mparam[2] = bparam[2]/step; | |
295 | mparam[3] = bparam[3]/step; | |
296 | mparam[5] = bparam[5]/step; | |
297 | mparam[4] = step; | |
298 | mparam[0] = 0.; // if crash of navigation take mean density 0 | |
299 | mparam[1] = 1000000; // and infinite rad length | |
300 | return bparam[0]/step; | |
301 | } | |
302 | mparam[6]+=1.; | |
303 | step += snext; | |
304 | bparam[1] += snext/lparam[1]; | |
305 | bparam[2] += snext*lparam[2]; | |
306 | bparam[3] += snext*lparam[3]; | |
307 | bparam[5] += snext*lparam[5]; | |
308 | bparam[0] += snext*lparam[0]; | |
309 | ||
310 | if (snext>=length) break; | |
311 | if (!currentnode) break; | |
312 | length -= snext; | |
313 | //printf("%s snext=%f length=%f\n", currentnode->GetName(),snext,length); | |
314 | material = currentnode->GetVolume()->GetMedium()->GetMaterial(); | |
315 | lparam[0] = material->GetDensity(); | |
316 | lparam[1] = material->GetRadLen(); | |
317 | lparam[2] = material->GetA(); | |
318 | lparam[3] = material->GetZ(); | |
319 | //printf(" %f %f %f %f\n",lparam[0],lparam[1],lparam[2],lparam[3]); | |
320 | lparam[5] = lparam[3]/lparam[2]; | |
321 | if (material->IsMixture()) { | |
322 | TGeoMixture * mixture = (TGeoMixture*)material; | |
323 | lparam[5]=0; | |
324 | Double_t sum =0; | |
325 | for (Int_t iel=0;iel<mixture->GetNelements();iel++){ | |
326 | sum+= mixture->GetWmixt()[iel]; | |
327 | lparam[5]+= mixture->GetZmixt()[iel]*mixture->GetWmixt()[iel]/mixture->GetAmixt()[iel]; | |
328 | } | |
329 | lparam[5]/=sum; | |
330 | } | |
331 | gGeoManager->FindNextBoundaryAndStep(length, kFALSE); | |
332 | snext = gGeoManager->GetStep(); | |
333 | //printf("snext %f\n",snext); | |
334 | } | |
335 | mparam[0] = bparam[0]/step; | |
336 | mparam[1] = bparam[1]; | |
337 | mparam[2] = bparam[2]/step; | |
338 | mparam[3] = bparam[3]/step; | |
339 | mparam[5] = bparam[5]/step; | |
340 | return bparam[0]/step; | |
341 | } | |
0c4ea33b | 342 | |
343 | ||
344 | Bool_t | |
345 | AliTracker::PropagateTrackTo(AliExternalTrackParam *track, Double_t xToGo, | |
346 | Double_t mass, Double_t maxStep, Bool_t rotateTo, Double_t maxSnp){ | |
347 | //---------------------------------------------------------------- | |
348 | // | |
349 | // Propagates the track to the plane X=xk (cm) using the magnetic field map | |
350 | // and correcting for the crossed material. | |
351 | // | |
352 | // mass - mass used in propagation - used for energy loss correction | |
353 | // maxStep - maximal step for propagation | |
354 | // | |
355 | // Origin: Marian Ivanov, Marian.Ivanov@cern.ch | |
356 | // | |
357 | //---------------------------------------------------------------- | |
358 | const Double_t kEpsilon = 0.00001; | |
359 | Double_t xpos = track->GetX(); | |
360 | Double_t dir = (xpos<xToGo) ? 1.:-1.; | |
361 | // | |
362 | while ( (xToGo-xpos)*dir > kEpsilon){ | |
363 | Double_t step = dir*TMath::Min(TMath::Abs(xToGo-xpos), maxStep); | |
364 | Double_t x = xpos+step; | |
365 | Double_t xyz0[3],xyz1[3],param[7]; | |
366 | track->GetXYZ(xyz0); //starting global position | |
367 | ||
368 | Double_t bz=GetBz(xyz0); // getting the local Bz | |
369 | ||
370 | if (!track->GetXYZAt(x,bz,xyz1)) return kFALSE; // no prolongation | |
371 | xyz1[2]+=kEpsilon; // waiting for bug correction in geo | |
372 | ||
373 | if (TMath::Abs(track->GetSnpAt(x,bz)) >= maxSnp) return kFALSE; | |
374 | if (!track->PropagateTo(x,bz)) return kFALSE; | |
375 | ||
376 | MeanMaterialBudget(xyz0,xyz1,param); | |
377 | Double_t xrho=param[0]*param[4], xx0=param[1]; | |
378 | ||
f7920267 | 379 | if (!track->CorrectForMeanMaterial(xx0,xrho,mass)) return kFALSE; |
380 | if (rotateTo){ | |
381 | if (TMath::Abs(track->GetSnp()) >= maxSnp) return kFALSE; | |
382 | track->GetXYZ(xyz0); // global position | |
383 | Double_t alphan = TMath::ATan2(xyz0[1], xyz0[0]); | |
384 | // | |
385 | Double_t ca=TMath::Cos(alphan-track->GetAlpha()), | |
386 | sa=TMath::Sin(alphan-track->GetAlpha()); | |
387 | Double_t sf=track->GetSnp(), cf=TMath::Sqrt((1.-sf)*(1.+sf)); | |
388 | Double_t sinNew = sf*ca - cf*sa; | |
389 | if (TMath::Abs(sinNew) >= maxSnp) return kFALSE; | |
390 | if (!track->Rotate(alphan)) return kFALSE; | |
391 | } | |
392 | xpos = track->GetX(); | |
393 | } | |
394 | return kTRUE; | |
395 | } | |
396 | ||
397 | Bool_t | |
398 | AliTracker::PropagateTrackToBxByBz(AliExternalTrackParam *track, | |
399 | Double_t xToGo, | |
400 | Double_t mass, Double_t maxStep, Bool_t rotateTo, Double_t maxSnp){ | |
401 | //---------------------------------------------------------------- | |
402 | // | |
403 | // Propagates the track to the plane X=xk (cm) | |
404 | // taking into account all the three components of the magnetic field | |
405 | // and correcting for the crossed material. | |
406 | // | |
407 | // mass - mass used in propagation - used for energy loss correction | |
408 | // maxStep - maximal step for propagation | |
409 | // | |
410 | // Origin: Marian Ivanov, Marian.Ivanov@cern.ch | |
411 | // | |
412 | //---------------------------------------------------------------- | |
413 | const Double_t kEpsilon = 0.00001; | |
414 | Double_t xpos = track->GetX(); | |
415 | Double_t dir = (xpos<xToGo) ? 1.:-1.; | |
416 | // | |
417 | while ( (xToGo-xpos)*dir > kEpsilon){ | |
418 | Double_t step = dir*TMath::Min(TMath::Abs(xToGo-xpos), maxStep); | |
419 | Double_t x = xpos+step; | |
420 | Double_t xyz0[3],xyz1[3],param[7]; | |
421 | track->GetXYZ(xyz0); //starting global position | |
422 | ||
423 | Double_t b[3]; GetBxByBz(xyz0,b); // getting the local Bx, By and Bz | |
424 | ||
425 | if (!track->GetXYZAt(x,b[2],xyz1)) return kFALSE; // no prolongation | |
426 | xyz1[2]+=kEpsilon; // waiting for bug correction in geo | |
427 | ||
428 | if (TMath::Abs(track->GetSnpAt(x,b[2])) >= maxSnp) return kFALSE; | |
429 | if (!track->PropagateToBxByBz(x,b)) return kFALSE; | |
430 | ||
431 | MeanMaterialBudget(xyz0,xyz1,param); | |
432 | Double_t xrho=param[0]*param[4], xx0=param[1]; | |
433 | ||
0c4ea33b | 434 | if (!track->CorrectForMeanMaterial(xx0,xrho,mass)) return kFALSE; |
435 | if (rotateTo){ | |
436 | if (TMath::Abs(track->GetSnp()) >= maxSnp) return kFALSE; | |
437 | track->GetXYZ(xyz0); // global position | |
438 | Double_t alphan = TMath::ATan2(xyz0[1], xyz0[0]); | |
439 | // | |
440 | Double_t ca=TMath::Cos(alphan-track->GetAlpha()), | |
441 | sa=TMath::Sin(alphan-track->GetAlpha()); | |
60e55aee | 442 | Double_t sf=track->GetSnp(), cf=TMath::Sqrt((1.-sf)*(1.+sf)); |
0c4ea33b | 443 | Double_t sinNew = sf*ca - cf*sa; |
444 | if (TMath::Abs(sinNew) >= maxSnp) return kFALSE; | |
445 | if (!track->Rotate(alphan)) return kFALSE; | |
446 | } | |
447 | xpos = track->GetX(); | |
448 | } | |
449 | return kTRUE; | |
450 | } | |
451 | ||
e23a38cb | 452 | void AliTracker::FillResiduals(const AliExternalTrackParam *t, |
453 | Double_t *p, Double_t *cov, | |
454 | UShort_t id, Bool_t updated) { | |
455 | // | |
456 | // This function fills the histograms of residuals | |
457 | // The array of these histos is external for this AliTracker class. | |
458 | // Normally, this array belong to AliGlobalQADataMaker class. | |
459 | // | |
460 | if (!fFillResiduals) return; | |
461 | if (!fResiduals) return; | |
462 | ||
463 | const Double_t *residuals=t->GetResiduals(p,cov,updated); | |
464 | if (!residuals) return; | |
465 | ||
466 | TH1F *h=0; | |
eca4fa66 | 467 | Int_t esIndex = AliRecoParam::AConvert(fEventSpecie) ; |
e23a38cb | 468 | AliGeomManager::ELayerID layer=AliGeomManager::VolUIDToLayer(id); |
eca4fa66 | 469 | h=(TH1F*)fResiduals[esIndex]->At(2*layer-2); |
e23a38cb | 470 | h->Fill(residuals[0]); |
eca4fa66 | 471 | h=(TH1F*)fResiduals[esIndex]->At(2*layer-1); |
e23a38cb | 472 | h->Fill(residuals[1]); |
a935c6c0 | 473 | |
474 | if (layer==5) { | |
49ab451d | 475 | if (p[1]<0) { // SSD1 absolute residuals |
eca4fa66 | 476 | ((TH1F*)fResiduals[esIndex]->At(40))->Fill(t->GetY()-p[0]); //C side |
477 | ((TH1F*)fResiduals[esIndex]->At(41))->Fill(t->GetZ()-p[1]); | |
49ab451d | 478 | } else { |
eca4fa66 | 479 | ((TH1F*)fResiduals[esIndex]->At(42))->Fill(t->GetY()-p[0]); //A side |
480 | ((TH1F*)fResiduals[esIndex]->At(43))->Fill(t->GetZ()-p[1]); | |
49ab451d | 481 | } |
a935c6c0 | 482 | } |
49ab451d | 483 | if (layer==6) { // SSD2 absolute residuals |
484 | if (p[1]<0) { | |
eca4fa66 | 485 | ((TH1F*)fResiduals[esIndex]->At(44))->Fill(t->GetY()-p[0]); //C side |
486 | ((TH1F*)fResiduals[esIndex]->At(45))->Fill(t->GetZ()-p[1]); | |
49ab451d | 487 | } else { |
eca4fa66 | 488 | ((TH1F*)fResiduals[esIndex]->At(46))->Fill(t->GetY()-p[0]); //A side |
489 | ((TH1F*)fResiduals[esIndex]->At(47))->Fill(t->GetZ()-p[1]); | |
49ab451d | 490 | } |
a935c6c0 | 491 | } |
492 | ||
e23a38cb | 493 | } |
494 | ||
9efabefd | 495 | void AliTracker::FillResiduals(const AliExternalTrackParam *t, |
496 | const AliCluster *c, Bool_t /*updated*/) { | |
497 | // | |
498 | // This function fills the histograms of residuals | |
499 | // The array of these histos is external for this AliTracker class. | |
500 | // Normally, this array belong to AliGlobalQADataMaker class. | |
501 | // | |
502 | // For the moment, the residuals are absolute ! | |
503 | // | |
504 | ||
505 | if (!fFillResiduals) return; | |
506 | if (!fResiduals) return; | |
507 | ||
508 | UShort_t id=c->GetVolumeId(); | |
509 | const TGeoHMatrix *matrixT2L=AliGeomManager::GetTracking2LocalMatrix(id); | |
510 | ||
511 | // Position of the cluster in the tracking c.s. | |
512 | Double_t clsTrk[3]={c->GetX(), c->GetY(), c->GetZ()}; | |
513 | // Position of the cluster in the local module c.s. | |
514 | Double_t clsLoc[3]={0.,0.,0.}; | |
515 | matrixT2L->LocalToMaster(clsTrk,clsLoc); | |
516 | ||
517 | ||
518 | // Position of the intersection point in the tracking c.s. | |
519 | Double_t trkTrk[3]={t->GetX(),t->GetY(),t->GetZ()}; | |
520 | // Position of the intersection point in the local module c.s. | |
521 | Double_t trkLoc[3]={0.,0.,0.}; | |
522 | matrixT2L->LocalToMaster(trkTrk,trkLoc); | |
523 | ||
524 | Double_t residuals[2]={trkLoc[0]-clsLoc[0], trkLoc[2]-clsLoc[2]}; | |
525 | ||
526 | TH1F *h=0; | |
eca4fa66 | 527 | Int_t esIndex = AliRecoParam::AConvert(fEventSpecie) ; |
9efabefd | 528 | AliGeomManager::ELayerID layer=AliGeomManager::VolUIDToLayer(id); |
eca4fa66 | 529 | h=(TH1F*)fResiduals[esIndex]->At(2*layer-2); |
9efabefd | 530 | h->Fill(residuals[0]); |
eca4fa66 | 531 | h=(TH1F*)fResiduals[esIndex]->At(2*layer-1); |
9efabefd | 532 | h->Fill(residuals[1]); |
533 | ||
534 | } |