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f7f33dec | 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 | #include "Riostream.h" | |
17 | #include "TChain.h" | |
18 | #include "TTree.h" | |
19 | #include "TH1F.h" | |
20 | #include "TH2F.h" | |
21 | #include "TList.h" | |
22 | #include "TMath.h" | |
23 | #include "TCanvas.h" | |
24 | #include "TFile.h" | |
25 | ||
26 | #include "AliTPCseed.h" | |
27 | #include "AliESDVertex.h" | |
28 | #include "AliESDEvent.h" | |
29 | #include "AliESDfriend.h" | |
30 | #include "AliESDInputHandler.h" | |
31 | ||
32 | #include "AliTracker.h" | |
33 | #include "AliMagFMaps.h" | |
34 | ||
35 | #include "AliLog.h" | |
36 | ||
37 | #include "AliTPCcalibCosmic.h" | |
38 | ||
39 | #include "TTreeStream.h" | |
40 | #include "AliTPCTracklet.h" | |
41 | ||
42 | ClassImp(AliTPCcalibCosmic) | |
43 | ||
44 | ||
45 | AliTPCcalibCosmic::AliTPCcalibCosmic() | |
46 | :AliTPCcalibBase(), | |
9b27d39b | 47 | fHistNTracks(0), |
48 | fClusters(0), | |
49 | fModules(0), | |
50 | fHistPt(0), | |
51 | fPtResolution(0), | |
52 | fDeDx(0), | |
53 | fCutMaxD(5), // maximal distance in rfi ditection | |
54 | fCutTheta(0.03), // maximal distan theta | |
55 | fCutMinDir(-0.99) // direction vector products | |
f7f33dec | 56 | { |
57 | AliInfo("Defualt Constructor"); | |
58 | } | |
59 | ||
60 | ||
61 | AliTPCcalibCosmic::AliTPCcalibCosmic(const Text_t *name, const Text_t *title) | |
62 | :AliTPCcalibBase(), | |
9b27d39b | 63 | fHistNTracks(0), |
64 | fClusters(0), | |
65 | fModules(0), | |
66 | fHistPt(0), | |
67 | fPtResolution(0), | |
68 | fDeDx(0), | |
69 | fCutMaxD(5), // maximal distance in rfi ditection | |
70 | fCutTheta(0.03), // maximal distan theta | |
71 | fCutMinDir(-0.99) // direction vector products | |
f7f33dec | 72 | { |
73 | SetName(name); | |
74 | SetTitle(title); | |
75 | AliMagFMaps * field = new AliMagFMaps("dummy1", "dummy2",0,5,0); | |
76 | AliTracker::SetFieldMap(field, kTRUE); | |
77 | fHistNTracks = new TH1F("ntracks","Number of Tracks per Event",501,-0.5,500.5); | |
78 | fClusters = new TH1F("signal","Number of Clusters per track",160,0,160); | |
79 | fModules = new TH2F("sector","Acorde hits; z (cm); x(cm)",1200,-1200,1200,600,-1000,1000); | |
80 | fHistPt = new TH1F("Pt","Pt distribution",2000,0,50); | |
81 | fPtResolution = new TH1F("PtResolution","Pt resolution",100,-50,50); | |
82 | fDeDx = new TH2F("DeDx","dEdx",500,0.01,20.,500,0.,500); | |
83 | BinLogX(fDeDx); | |
9b27d39b | 84 | AliInfo("Non Default Constructor"); |
f7f33dec | 85 | } |
86 | ||
87 | AliTPCcalibCosmic::~AliTPCcalibCosmic(){ | |
88 | // | |
89 | // | |
90 | // | |
91 | } | |
92 | ||
93 | ||
9b27d39b | 94 | |
95 | ||
96 | ||
f7f33dec | 97 | void AliTPCcalibCosmic::Process(AliESDEvent *event) { |
9b27d39b | 98 | // |
99 | // | |
100 | // | |
f7f33dec | 101 | if (!event) { |
102 | Printf("ERROR: ESD not available"); | |
103 | return; | |
9b27d39b | 104 | } |
f7f33dec | 105 | AliESDfriend *ESDfriend=static_cast<AliESDfriend*>(event->FindListObject("AliESDfriend")); |
106 | if (!ESDfriend) { | |
107 | Printf("ERROR: ESDfriend not available"); | |
108 | return; | |
109 | } | |
9b27d39b | 110 | FindPairs(event); |
f7f33dec | 111 | |
9b27d39b | 112 | if (GetDebugLevel()>1) printf("Hallo world: Im here\n"); |
113 | Int_t ntracks=event->GetNumberOfTracks(); | |
114 | fHistNTracks->Fill(ntracks); | |
115 | TObjArray tpcSeeds(ntracks); | |
116 | if (ntracks==0) return; | |
117 | // | |
f7f33dec | 118 | //track loop |
9b27d39b | 119 | // |
120 | for (Int_t i=0;i<ntracks;++i) { | |
f7f33dec | 121 | AliESDtrack *track = event->GetTrack(i); |
9b27d39b | 122 | fClusters->Fill(track->GetTPCNcls()); |
f7f33dec | 123 | AliExternalTrackParam * trackIn = new AliExternalTrackParam(*track->GetInnerParam()); |
124 | ||
125 | AliESDfriendTrack *friendTrack = ESDfriend->GetTrack(i); | |
126 | TObject *calibObject; | |
127 | AliTPCseed *seed = 0; | |
9b27d39b | 128 | for (Int_t l=0;(calibObject=friendTrack->GetCalibObject(l));++l) { |
129 | if ((seed=dynamic_cast<AliTPCseed*>(calibObject))) break; | |
f7f33dec | 130 | } |
9b27d39b | 131 | if (seed) tpcSeeds.AddAt(seed,i); |
132 | if (seed && track->GetTPCNcls() > 80) fDeDx->Fill(trackIn->GetP(), seed->CookdEdxNorm(0.05,0.45,0)); | |
f7f33dec | 133 | } |
9b27d39b | 134 | if (ntracks<2) return; |
135 | ||
136 | ||
137 | // dE/dx,pt and ACORDE study --> studies which need the pair selection | |
138 | for (Int_t i=0;i<ntracks;++i) { | |
f7f33dec | 139 | AliESDtrack *track1 = event->GetTrack(i); |
140 | ||
141 | Double_t d1[3]; | |
142 | track1->GetDirection(d1); | |
143 | ||
9b27d39b | 144 | for (Int_t j=i+1;j<ntracks;++j) { |
f7f33dec | 145 | AliESDtrack *track2 = event->GetTrack(j); |
146 | Double_t d2[3]; | |
147 | track2->GetDirection(d2); | |
148 | ||
149 | if (d1[0]*d2[0] + d1[1]*d2[1] + d1[2]*d2[2] < -0.999) { | |
150 | ||
151 | /*___________________________________ Pt resolution ________________________________________*/ | |
152 | if (track1->Pt() != 0 && track1->GetTPCNcls() > 80 && track2->GetTPCNcls() > 80) { | |
153 | Double_t res = (track1->Pt() - track2->Pt()); | |
154 | res = res/(2*(track1->Pt() + track2->Pt())); | |
155 | fPtResolution->Fill(100*res); | |
156 | } | |
157 | ||
158 | /*_______________________________ Propagation to ACORDE ___________________________________*/ | |
159 | const Double_t AcordePlane = 850.; //distance of the central Acorde detectors to the beam line at y =0 | |
160 | const Double_t roof = 210.5; // distance from x =0 to end of magnet roof | |
161 | ||
162 | if (d1[1] > 0 && d2[1] < 0 && track1->GetTPCNcls() > 50) { | |
163 | Double_t r[3]; | |
164 | track1->GetXYZ(r); | |
165 | Double_t x,z; | |
166 | z = r[2] + (d1[2]/d1[1])*(AcordePlane - r[1]); | |
167 | x = r[0] + (d1[0]/d1[1])*(AcordePlane - r[1]); | |
168 | ||
169 | if (x > roof) { | |
170 | x = x - (x-roof)/(1 + TMath::Abs(TMath::Tan(track1->Phi()))); | |
171 | z = z - TMath::Abs(TMath::Tan(track1->Phi()))/TMath::Abs(TMath::Tan(track1->Theta()))*(x-roof)/(1 + TMath::Abs(TMath::Tan(track1->Phi()))); | |
172 | } | |
173 | if (x < -roof) { | |
174 | x = x - (x+roof)/(1 + TMath::Abs(TMath::Tan(track1->Phi()))); | |
175 | z = z - TMath::Abs(TMath::Tan(track1->Phi()))/TMath::Abs(TMath::Tan(track1->Theta()))*(x+roof)/(1 + TMath::Abs(TMath::Tan(track1->Phi()))); | |
176 | } | |
177 | ||
178 | fModules->Fill(z, x); | |
179 | } | |
180 | ||
181 | if (d2[1] > 0 && d1[1] < 0 && track2->GetTPCNcls() > 50) { | |
182 | Double_t r[3]; | |
183 | track2->GetXYZ(r); | |
184 | Double_t x,z; | |
185 | z = r[2] + (d2[2]/d2[1])*(AcordePlane - r[1]); | |
186 | x = r[0] + (d2[0]/d2[1])*(AcordePlane - r[1]); | |
187 | ||
188 | if (x > roof) { | |
189 | x = x - (x-roof)/(1 + TMath::Abs(TMath::Tan(track2->Phi()))); | |
190 | z = z - TMath::Abs(TMath::Tan(track2->Phi()))/TMath::Abs(TMath::Tan(track2->Theta()))*(x-roof)/(1 + TMath::Abs(TMath::Tan(track2->Phi()))); | |
191 | } | |
192 | if (x < -roof) { | |
193 | x = x - (x+roof)/(1 + TMath::Abs(TMath::Tan(track2->Phi()))); | |
194 | z = z - TMath::Abs(TMath::Tan(track2->Phi()))/TMath::Abs(TMath::Tan(track2->Theta()))*(x+roof)/(1 + TMath::Abs(TMath::Tan(track2->Phi()))); | |
195 | } | |
196 | ||
197 | fModules->Fill(z, x); | |
198 | } | |
199 | ||
f7f33dec | 200 | // AliExternalTrackParam * trackOut = new AliExternalTrackParam(*track2->GetOuterParam()); |
201 | // AliTracker::PropagateTrackTo(trackOut,850.,105.658,30); | |
202 | // delete trackOut; | |
203 | ||
204 | ||
205 | ||
206 | ||
207 | ||
208 | break; | |
209 | } | |
210 | } | |
211 | } | |
212 | ||
213 | ||
214 | ||
215 | ||
216 | } | |
217 | ||
9b27d39b | 218 | void AliTPCcalibCosmic::FindPairs(AliESDEvent *event) { |
219 | // | |
220 | // Find cosmic pairs | |
04087794 | 221 | // |
222 | // Track0 is choosen in upper TPC part | |
223 | // Track1 is choosen in lower TPC part | |
9b27d39b | 224 | // |
225 | if (GetDebugLevel()>1) printf("Hallo world: Im here\n"); | |
226 | AliESDfriend *ESDfriend=static_cast<AliESDfriend*>(event->FindListObject("AliESDfriend")); | |
227 | Int_t ntracks=event->GetNumberOfTracks(); | |
9b27d39b | 228 | TObjArray tpcSeeds(ntracks); |
229 | if (ntracks==0) return; | |
230 | Double_t vtxx[3]={0,0,0}; | |
231 | Double_t svtxx[3]={0.000001,0.000001,100.}; | |
232 | AliESDVertex vtx(vtxx,svtxx); | |
233 | // | |
234 | //track loop | |
235 | // | |
236 | for (Int_t i=0;i<ntracks;++i) { | |
237 | AliESDtrack *track = event->GetTrack(i); | |
238 | fClusters->Fill(track->GetTPCNcls()); | |
239 | AliExternalTrackParam * trackIn = new AliExternalTrackParam(*track->GetInnerParam()); | |
240 | ||
241 | AliESDfriendTrack *friendTrack = ESDfriend->GetTrack(i); | |
242 | TObject *calibObject; | |
243 | AliTPCseed *seed = 0; | |
244 | for (Int_t l=0;(calibObject=friendTrack->GetCalibObject(l));++l) { | |
245 | if ((seed=dynamic_cast<AliTPCseed*>(calibObject))) break; | |
246 | } | |
247 | if (seed) tpcSeeds.AddAt(seed,i); | |
248 | if (seed && track->GetTPCNcls() > 80) fDeDx->Fill(trackIn->GetP(), seed->CookdEdxNorm(0.05,0.45,0)); | |
249 | } | |
250 | if (ntracks<2) return; | |
251 | // | |
252 | // Find pairs | |
253 | // | |
254 | for (Int_t i=0;i<ntracks;++i) { | |
255 | AliESDtrack *track0 = event->GetTrack(i); | |
04087794 | 256 | // track0 - choosen upper part |
257 | if (!track0) continue; | |
258 | if (!track0->GetOuterParam()) continue; | |
259 | if (track0->GetOuterParam()->GetAlpha()<0) continue; | |
9b27d39b | 260 | Double_t d1[3]; |
261 | track0->GetDirection(d1); | |
04087794 | 262 | for (Int_t j=0;j<ntracks;++j) { |
263 | if (i==j) continue; | |
264 | AliESDtrack *track1 = event->GetTrack(j); | |
265 | //track 1 lower part | |
266 | if (!track1) continue; | |
267 | if (!track1->GetOuterParam()) continue; | |
268 | if (track1->GetOuterParam()->GetAlpha()>0) continue; | |
269 | // | |
270 | Double_t d2[3]; | |
271 | track1->GetDirection(d2); | |
9b27d39b | 272 | printf("My stream level=%d\n",fStreamLevel); |
273 | AliTPCseed * seed0 = (AliTPCseed*) tpcSeeds.At(i); | |
274 | AliTPCseed * seed1 = (AliTPCseed*) tpcSeeds.At(j); | |
275 | if (! seed0) continue; | |
276 | if (! seed1) continue; | |
277 | Float_t dedx0 = seed0->CookdEdxNorm(0.05,0.55,0); | |
278 | Float_t dedx1 = seed1->CookdEdxNorm(0.05,0.55,0); | |
279 | Float_t dir = (d1[0]*d2[0] + d1[1]*d2[1] + d1[2]*d2[2]); | |
280 | Float_t d0 = track0->GetLinearD(0,0); | |
281 | Float_t d1 = track1->GetLinearD(0,0); | |
282 | // | |
283 | // conservative cuts - convergence to be guarantied | |
284 | // applying before track propagation | |
285 | if (TMath::Abs(d0+d1)>fCutMaxD) continue; // distance to the 0,0 | |
286 | if (dir>fCutMinDir) continue; // direction vector product | |
287 | Float_t bz = AliTracker::GetBz(); | |
288 | Float_t dvertex0[2]; //distance to 0,0 | |
289 | Float_t dvertex1[2]; //distance to 0,0 | |
290 | track0->GetDZ(0,0,0,bz,dvertex0); | |
291 | track1->GetDZ(0,0,0,bz,dvertex1); | |
292 | if (TMath::Abs(dvertex0[1])>250) continue; | |
293 | if (TMath::Abs(dvertex1[1])>250) continue; | |
294 | // | |
295 | // | |
296 | // | |
297 | Float_t dmax = TMath::Max(TMath::Abs(d0),TMath::Abs(d1)); | |
298 | AliExternalTrackParam param0(*track0); | |
299 | AliExternalTrackParam param1(*track1); | |
300 | // | |
301 | // Propagate using Magnetic field and correct fo material budget | |
302 | // | |
303 | AliTracker::PropagateTrackTo(¶m0,dmax+1,0.0005,3,kTRUE); | |
304 | AliTracker::PropagateTrackTo(¶m1,dmax+1,0.0005,3,kTRUE); | |
305 | // | |
306 | // Propagate rest to the 0,0 DCA - z should be ignored | |
307 | // | |
308 | Bool_t b0 = param0.PropagateToDCA(&vtx,bz,1000); | |
309 | Bool_t b1 = param1.PropagateToDCA(&vtx,bz,1000); | |
310 | // | |
311 | param0.GetDZ(0,0,0,bz,dvertex0); | |
312 | param1.GetDZ(0,0,0,bz,dvertex1); | |
313 | // | |
314 | Double_t xyz0[3];//,pxyz0[3]; | |
315 | Double_t xyz1[3];//,pxyz1[3]; | |
316 | param0.GetXYZ(xyz0); | |
317 | param1.GetXYZ(xyz1); | |
318 | Bool_t isPair = IsPair(¶m0,¶m1); | |
319 | // | |
320 | if (fStreamLevel>0){ | |
321 | TTreeSRedirector * cstream = GetDebugStreamer(); | |
322 | printf("My stream=%p\n",(void*)cstream); | |
323 | if (cstream) { | |
324 | (*cstream) << "Track0" << | |
325 | "dir="<<dir<< // direction | |
326 | "OK="<<isPair<< // will be accepted | |
327 | "b0="<<b0<< // propagate status | |
328 | "b1="<<b1<< // propagate status | |
329 | "Orig0.=" << track0 << // original track 0 | |
330 | "Orig1.=" << track1 << // original track 1 | |
331 | "Tr0.="<<¶m0<< // track propagated to the DCA 0,0 | |
332 | "Tr1.="<<¶m1<< // track propagated to the DCA 0,0 | |
333 | "v00="<<dvertex0[0]<< // distance using kalman | |
334 | "v01="<<dvertex0[1]<< // | |
335 | "v10="<<dvertex1[0]<< // | |
336 | "v11="<<dvertex1[1]<< // | |
337 | "d0="<<d0<< // linear distance to 0,0 | |
338 | "d1="<<d1<< // linear distance to 0,0 | |
339 | // | |
340 | "x00="<<xyz0[0]<< | |
341 | "x01="<<xyz0[1]<< | |
342 | "x02="<<xyz0[2]<< | |
343 | // | |
344 | "x10="<<xyz1[0]<< | |
345 | "x11="<<xyz1[1]<< | |
346 | "x12="<<xyz1[2]<< | |
347 | // | |
348 | "Seed0.=" << track0 << // original seed 0 | |
349 | "Seed1.=" << track1 << // original seed 1 | |
350 | "dedx0="<<dedx0<< // dedx0 | |
351 | "dedx1="<<dedx1<< // dedx1 | |
352 | "\n"; | |
353 | } | |
354 | } | |
355 | } | |
356 | } | |
357 | } | |
358 | ||
04087794 | 359 | /* |
360 | ||
361 | ||
362 | void AliTPCcalibCosmic::dEdxCorrection(){ | |
363 | TCut cutT("cutT","abs(Tr1.fP[3]+Tr0.fP[3])<0.03") | |
364 | TCut cutD("cutD","abs(Tr0.fP[0]+Tr1.fP[0])<5") | |
365 | TCut cutPt("cutPt","abs(Tr1.fP[4]+Tr0.fP[4])<1&&abs(Tr0.fP[4])+abs(Tr1.fP[4])<10"); | |
47328338 | 366 | TCut cutN("cutN","min(Orig0.fTPCncls,Orig1.fTPCncls)>70"); |
04087794 | 367 | } |
9b27d39b | 368 | |
04087794 | 369 | */ |
f7f33dec | 370 | |
f7f33dec | 371 | |
9b27d39b | 372 | |
373 | Long64_t AliTPCcalibCosmic::Merge(TCollection */*li*/) { | |
374 | ||
f7f33dec | 375 | } |
376 | ||
9b27d39b | 377 | Bool_t AliTPCcalibCosmic::IsPair(AliExternalTrackParam *tr0, AliExternalTrackParam *tr1){ |
378 | // | |
379 | // | |
380 | /* | |
381 | // 0. Same direction - OPOSITE - cutDir +cutT | |
382 | TCut cutDir("cutDir","dir<-0.99") | |
383 | // 1. | |
384 | TCut cutT("cutT","abs(Tr1.fP[3]+Tr0.fP[3])<0.03") | |
385 | // | |
386 | // 2. The same rphi | |
387 | TCut cutD("cutD","abs(Tr0.fP[0]+Tr1.fP[0])<5") | |
388 | // | |
389 | // | |
390 | // | |
391 | TCut cutPt("cutPt","abs(Tr1.fP[4]+Tr0.fP[4])<1&&abs(Tr0.fP[4])+abs(Tr1.fP[4])<10"); | |
392 | // 1/Pt diff cut | |
393 | */ | |
394 | const Double_t *p0 = tr0->GetParameter(); | |
395 | const Double_t *p1 = tr1->GetParameter(); | |
396 | if (TMath::Abs(p0[3]+p1[3])>fCutTheta) return kFALSE; | |
397 | if (TMath::Abs(p0[0]+p1[0])>fCutMaxD) return kFALSE; | |
398 | Double_t d0[3], d1[3]; | |
399 | tr0->GetDirection(d0); | |
400 | tr1->GetDirection(d1); | |
401 | if (d0[0]*d1[0] + d0[1]*d1[1] + d0[2]*d1[2] >fCutMinDir) return kFALSE; | |
402 | // | |
403 | return kTRUE; | |
404 | } | |
405 | ||
406 | ||
f7f33dec | 407 | |
408 | void AliTPCcalibCosmic::BinLogX(TH1 *h) { | |
409 | ||
410 | // Method for the correct logarithmic binning of histograms | |
411 | ||
412 | TAxis *axis = h->GetXaxis(); | |
413 | int bins = axis->GetNbins(); | |
414 | ||
415 | Double_t from = axis->GetXmin(); | |
416 | Double_t to = axis->GetXmax(); | |
417 | Double_t *new_bins = new Double_t[bins + 1]; | |
418 | ||
419 | new_bins[0] = from; | |
420 | Double_t factor = pow(to/from, 1./bins); | |
421 | ||
422 | for (int i = 1; i <= bins; i++) { | |
423 | new_bins[i] = factor * new_bins[i-1]; | |
424 | } | |
425 | axis->Set(bins, new_bins); | |
426 | delete new_bins; | |
427 | ||
428 | } | |
429 |