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Fix for #79704: G__exception in LHC10h pass 2
[u/mrichter/AliRoot.git] / TPC / AliTPCcalibCosmic.cxx
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76c58ee2 1
2
f7f33dec 3/**************************************************************************
4 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
5 * *
6 * Author: The ALICE Off-line Project. *
7 * Contributors are mentioned in the code where appropriate. *
8 * *
9 * Permission to use, copy, modify and distribute this software and its *
10 * documentation strictly for non-commercial purposes is hereby granted *
11 * without fee, provided that the above copyright notice appears in all *
12 * copies and that both the copyright notice and this permission notice *
13 * appear in the supporting documentation. The authors make no claims *
14 * about the suitability of this software for any purpose. It is *
15 * provided "as is" without express or implied warranty. *
16 **************************************************************************/
17
54b76c13 18/*
108953e9 19 Comments to be written here:
54b76c13 20 1. What do we calibrate.
21 2. How to interpret results
22 3. Simple example
23 4. Analysis using debug streamers.
24
25
26
27 3.Simple example
28 // To make cosmic scan the user interaction neccessary
29 //
236f5592 30
b9908d0b 31 */
54b76c13 32
33
34
f7f33dec 35#include "Riostream.h"
36#include "TChain.h"
37#include "TTree.h"
38#include "TH1F.h"
39#include "TH2F.h"
40#include "TList.h"
41#include "TMath.h"
42#include "TCanvas.h"
43#include "TFile.h"
54b76c13 44#include "TF1.h"
91fd44c9 45#include "THnSparse.h"
9963b5e2 46#include "TDatabasePDG.h"
f7f33dec 47
54b76c13 48#include "AliTPCclusterMI.h"
f7f33dec 49#include "AliTPCseed.h"
50#include "AliESDVertex.h"
51#include "AliESDEvent.h"
52#include "AliESDfriend.h"
53#include "AliESDInputHandler.h"
54b76c13 54#include "AliAnalysisManager.h"
f7f33dec 55
56#include "AliTracker.h"
f7a1cc68 57#include "AliMagF.h"
54b76c13 58#include "AliTPCCalROC.h"
76c58ee2 59#include "AliTPCParam.h"
f7f33dec 60#include "AliLog.h"
61
62#include "AliTPCcalibCosmic.h"
f7f33dec 63#include "TTreeStream.h"
64#include "AliTPCTracklet.h"
3326b323 65//#include "AliESDcosmic.h"
76c58ee2 66#include "AliRecoParam.h"
67#include "AliMultiplicity.h"
68#include "AliTPCTransform.h"
69#include "AliTPCcalibDB.h"
70#include "AliTPCseed.h"
71#include "AliGRPObject.h"
72#include "AliTPCCorrection.h"
f7f33dec 73ClassImp(AliTPCcalibCosmic)
74
75
76AliTPCcalibCosmic::AliTPCcalibCosmic()
77 :AliTPCcalibBase(),
9b27d39b 78 fHistNTracks(0),
79 fClusters(0),
80 fModules(0),
81 fHistPt(0),
9b27d39b 82 fDeDx(0),
54b76c13 83 fDeDxMIP(0),
84 fMIPvalue(1),
9b27d39b 85 fCutMaxD(5), // maximal distance in rfi ditection
a6dc0cf6 86 fCutMaxDz(40), // maximal distance in z ditection
9b27d39b 87 fCutTheta(0.03), // maximal distan theta
76c58ee2 88 fCutMinDir(-0.99), // direction vector products
89 fCosmicTree(0) // tree with cosmic data
f7f33dec 90{
236f5592 91 //
92 // CONSTRUCTOR - SEE COMMENTS ABOVE
93 //
54b76c13 94 AliInfo("Default Constructor");
91fd44c9 95 for (Int_t ihis=0; ihis<6;ihis++){
96 fHistoDelta[ihis]=0;
97 fHistoPull[ihis]=0;
8a92e133 98 }
99 for (Int_t ihis=0; ihis<4;ihis++){
100 fHistodEdxMax[ihis] =0;
101 fHistodEdxTot[ihis] =0;
91fd44c9 102 }
f7f33dec 103}
104
105
106AliTPCcalibCosmic::AliTPCcalibCosmic(const Text_t *name, const Text_t *title)
107 :AliTPCcalibBase(),
9b27d39b 108 fHistNTracks(0),
109 fClusters(0),
110 fModules(0),
111 fHistPt(0),
9b27d39b 112 fDeDx(0),
54b76c13 113 fDeDxMIP(0),
114 fMIPvalue(1),
a6dc0cf6 115 fCutMaxD(5), // maximal distance in rfi ditection
116 fCutMaxDz(40), // maximal distance in z ditection
9b27d39b 117 fCutTheta(0.03), // maximal distan theta
76c58ee2 118 fCutMinDir(-0.99), // direction vector products
119 fCosmicTree(0) // tree with cosmic data
f7f33dec 120{
236f5592 121 //
122 // cONSTRUCTOR - SEE COMENTS ABOVE
123 //
f7f33dec 124 SetName(name);
125 SetTitle(title);
54b76c13 126
127 fHistNTracks = new TH1F("ntracks","Number of Tracks per Event; number of tracks per event; number of tracks",501,-0.5,500.5);
128 fClusters = new TH1F("signal","Number of Clusters per track; number of clusters per track n_{cl}; counts",160,0,160);
129 fModules = new TH2F("sector","Acorde hits; z (cm); x(cm)",1200,-650,650,600,-700,700);
130 fHistPt = new TH1F("Pt","Pt distribution; p_{T} (GeV); counts",2000,0,50);
131 fDeDx = new TH2F("DeDx","dEdx; momentum p (GeV); TPC signal (a.u.)",500,0.01,100.,500,2.,1000);
f7f33dec 132 BinLogX(fDeDx);
54b76c13 133 fDeDxMIP = new TH1F("DeDxMIP","MIP region; TPC signal (a.u.);counts ",500,2.,1000);
91fd44c9 134 Init();
9b27d39b 135 AliInfo("Non Default Constructor");
bca20570 136 //
f7f33dec 137}
138
139AliTPCcalibCosmic::~AliTPCcalibCosmic(){
140 //
236f5592 141 // destructor
f7f33dec 142 //
91fd44c9 143 for (Int_t ihis=0; ihis<6;ihis++){
144 delete fHistoDelta[ihis];
145 delete fHistoPull[ihis];
91fd44c9 146 }
8a92e133 147 for (Int_t ihis=0; ihis<4;ihis++){
148 delete fHistodEdxTot[ihis];
149 delete fHistodEdxMax[ihis];
150 }
151
152 delete fHistNTracks; // histogram showing number of ESD tracks per event
153 delete fClusters; // histogram showing the number of clusters per track
154 delete fModules; // 2d histogram of tracks which are propagated to the ACORDE scintillator array
155 delete fHistPt; // Pt histogram of reconstructed tracks
156 delete fDeDx; // dEdx spectrum showing the different particle types
157 delete fDeDxMIP; // TPC signal close to the MIP region of muons 0.4 < p < 0.45 GeV
f7f33dec 158}
159
160
91fd44c9 161void AliTPCcalibCosmic::Init(){
162 //
163 // init component
164 // Make performance histograms
165 //
166
167 // tracking performance bins
168 // 0 - delta of interest
169 // 1 - min (track0, track1) number of clusters
170 // 2 - R - vertex radius
171 // 3 - P1 - mean z
172 // 4 - P2 - snp(phi) at inner wall of TPC
173 // 5 - P3 - tan(theta) at inner wall of TPC
174 // 6 - P4 - 1/pt mean
175 // 7 - pt - pt mean
176 // 8 - alpha
76c58ee2 177 // 9 - is corss indicator
178 Int_t ndim=10;
179 Double_t xminTrack[10], xmaxTrack[10];
180 Int_t binsTrack[10];
181 TString axisName[10];
91fd44c9 182 //
183 binsTrack[0] =100;
184 axisName[0] ="#Delta";
185 //
186 binsTrack[1] =8;
187 xminTrack[1] =80; xmaxTrack[1]=160;
188 axisName[1] ="N_{cl}";
189 //
190 binsTrack[2] =10;
191 xminTrack[2] =0; xmaxTrack[2]=90; //
192 axisName[2] ="dca_{r} (cm)";
193 //
194 binsTrack[3] =25;
195 xminTrack[3] =-250; xmaxTrack[3]=250; //
196 axisName[3] ="z (cm)";
197 //
198 binsTrack[4] =10;
199 xminTrack[4] =-0.8; xmaxTrack[4]=0.8; //
200 axisName[4] ="sin(#phi)";
201 //
202 binsTrack[5] =10;
203 xminTrack[5] =-1; xmaxTrack[5]=1; //
8a92e133 204 axisName[5] ="tan(#theta)";
91fd44c9 205 //
a390f11f 206 binsTrack[6] =40;
207 xminTrack[6] =-2; xmaxTrack[6]=2; //
91fd44c9 208 axisName[6] ="1/pt (1/GeV)";
209 //
76c58ee2 210 binsTrack[7] =50;
211 xminTrack[7] =1; xmaxTrack[7]=1000; //
8a92e133 212 axisName[7] ="pt (GeV)";
91fd44c9 213 //
a390f11f 214 binsTrack[8] =18;
91fd44c9 215 xminTrack[8] =0; xmaxTrack[8]=TMath::Pi(); //
216 axisName[8] ="alpha";
217 //
76c58ee2 218 binsTrack[9] =3;
219 xminTrack[9] =-0.1; xmaxTrack[9]=2.1; //
220 axisName[9] ="cross";
221 //
91fd44c9 222 // delta y
223 xminTrack[0] =-1; xmaxTrack[0]=1; //
76c58ee2 224 fHistoDelta[0] = new THnSparseS("#Delta_{Y} (cm)","#Delta_{Y} (cm)", ndim, binsTrack,xminTrack, xmaxTrack);
91fd44c9 225 xminTrack[0] =-5; xmaxTrack[0]=5; //
76c58ee2 226 fHistoPull[0] = new THnSparseS("#Delta_{Y} (unit)","#Delta_{Y} (unit)", ndim, binsTrack,xminTrack, xmaxTrack);
91fd44c9 227 //
228 // delta z
229 xminTrack[0] =-1; xmaxTrack[0]=1; //
76c58ee2 230 fHistoDelta[1] = new THnSparseS("#Delta_{Z} (cm)","#Delta_{Z} (cm)", ndim, binsTrack,xminTrack, xmaxTrack);
91fd44c9 231 xminTrack[0] =-5; xmaxTrack[0]=5; //
76c58ee2 232 fHistoPull[1] = new THnSparseS("#Delta_{Z} (unit)","#Delta_{Z} (unit)", ndim, binsTrack,xminTrack, xmaxTrack);
91fd44c9 233 //
234 // delta P2
235 xminTrack[0] =-10; xmaxTrack[0]=10; //
76c58ee2 236 fHistoDelta[2] = new THnSparseS("#Delta_{#phi} (mrad)","#Delta_{#phi} (mrad)", ndim, binsTrack,xminTrack, xmaxTrack);
91fd44c9 237 xminTrack[0] =-5; xmaxTrack[0]=5; //
76c58ee2 238 fHistoPull[2] = new THnSparseS("#Delta_{#phi} (unit)","#Delta_{#phi} (unit)", ndim, binsTrack,xminTrack, xmaxTrack);
91fd44c9 239 //
240 // delta P3
241 xminTrack[0] =-10; xmaxTrack[0]=10; //
76c58ee2 242 fHistoDelta[3] = new THnSparseS("#Delta_{#theta} (mrad)","#Delta_{#theta} (mrad)", ndim, binsTrack,xminTrack, xmaxTrack);
91fd44c9 243 xminTrack[0] =-5; xmaxTrack[0]=5; //
76c58ee2 244 fHistoPull[3] = new THnSparseS("#Delta_{#theta} (unit)","#Delta_{#theta} (unit)", ndim, binsTrack,xminTrack, xmaxTrack);
91fd44c9 245 //
246 // delta P4
247 xminTrack[0] =-0.2; xmaxTrack[0]=0.2; //
76c58ee2 248 fHistoDelta[4] = new THnSparseS("#Delta_{1/pt} (1/GeV)","#Delta_{1/pt} (1/GeV)", ndim, binsTrack,xminTrack, xmaxTrack);
91fd44c9 249 xminTrack[0] =-5; xmaxTrack[0]=5; //
76c58ee2 250 fHistoPull[4] = new THnSparseS("#Delta_{1/pt} (unit)","#Delta_{1/pt} (unit)", ndim, binsTrack,xminTrack, xmaxTrack);
91fd44c9 251
252 //
253 // delta Pt
254 xminTrack[0] =-0.5; xmaxTrack[0]=0.5; //
76c58ee2 255 fHistoDelta[5] = new THnSparseS("#Delta_{pt}/p_{t}","#Delta_{pt}/p_{t}", ndim, binsTrack,xminTrack, xmaxTrack);
91fd44c9 256 xminTrack[0] =-5; xmaxTrack[0]=5; //
76c58ee2 257 fHistoPull[5] = new THnSparseS("#Delta_{pt}/p_{t} (unit)","#Delta_{pt}/p_{t} (unit)", ndim, binsTrack,xminTrack, xmaxTrack);
91fd44c9 258 //
8a92e133 259
260 for (Int_t idedx=0;idedx<4;idedx++){
261 xminTrack[0] =0.5; xmaxTrack[0]=1.5; //
262 binsTrack[1] =40;
263 xminTrack[1] =10; xmaxTrack[1]=160;
264
265 fHistodEdxMax[idedx] = new THnSparseS(Form("dEdx_{MaxUp}/dEdx_{MaxDown}_Pad%d",idedx),
266 Form("dEdx_{MaxUp}/dEdx_{MaxDown}_Pad%d",idedx),
76c58ee2 267 ndim, binsTrack,xminTrack, xmaxTrack);
8a92e133 268 fHistodEdxTot[idedx] = new THnSparseS(Form("dEdx_{TotUp}/dEdx_{TotDown}_Pad%d",idedx),
269 Form("dEdx_{TotUp}/dEdx_{TotDown}_Pad%d",idedx),
76c58ee2 270 ndim, binsTrack,xminTrack, xmaxTrack);
8a92e133 271 }
272
273
274
91fd44c9 275 for (Int_t ivar=0;ivar<6;ivar++){
76c58ee2 276 for (Int_t ivar2=0;ivar2<ndim;ivar2++){
91fd44c9 277 fHistoDelta[ivar]->GetAxis(ivar2)->SetName(axisName[ivar2].Data());
278 fHistoDelta[ivar]->GetAxis(ivar2)->SetTitle(axisName[ivar2].Data());
279 fHistoPull[ivar]->GetAxis(ivar2)->SetName(axisName[ivar2].Data());
280 fHistoPull[ivar]->GetAxis(ivar2)->SetTitle(axisName[ivar2].Data());
281 BinLogX(fHistoDelta[ivar],7);
282 BinLogX(fHistoPull[ivar],7);
8a92e133 283 if (ivar<4){
284 fHistodEdxMax[ivar]->GetAxis(ivar2)->SetName(axisName[ivar2].Data());
285 fHistodEdxMax[ivar]->GetAxis(ivar2)->SetTitle(axisName[ivar2].Data());
286 fHistodEdxTot[ivar]->GetAxis(ivar2)->SetName(axisName[ivar2].Data());
287 fHistodEdxTot[ivar]->GetAxis(ivar2)->SetTitle(axisName[ivar2].Data());
288 BinLogX(fHistodEdxMax[ivar],7);
289 BinLogX(fHistodEdxTot[ivar],7);
290 }
91fd44c9 291 }
292 }
293}
294
295
296void AliTPCcalibCosmic::Add(const AliTPCcalibCosmic* cosmic){
297 //
236f5592 298 // merge the content of the cosmic componentnts
91fd44c9 299 //
300 for (Int_t ivar=0; ivar<6;ivar++){
301 if (fHistoDelta[ivar] && cosmic->fHistoDelta[ivar]){
302 fHistoDelta[ivar]->Add(cosmic->fHistoDelta[ivar]);
303 }
304 if (fHistoPull[ivar] && cosmic->fHistoPull[ivar]){
305 fHistoPull[ivar]->Add(cosmic->fHistoPull[ivar]);
306 }
307 }
8a92e133 308 for (Int_t ivar=0; ivar<4;ivar++){
309 if (fHistodEdxMax[ivar] && cosmic->fHistodEdxMax[ivar]){
310 fHistodEdxMax[ivar]->Add(cosmic->fHistodEdxMax[ivar]);
311 }
312 if (fHistodEdxTot[ivar] && cosmic->fHistodEdxTot[ivar]){
313 fHistodEdxTot[ivar]->Add(cosmic->fHistodEdxTot[ivar]);
314 }
315 }
76c58ee2 316 if (cosmic->fCosmicTree){
317 if (!fCosmicTree) {
318 fCosmicTree = new TTree("pairs","pairs");
319 fCosmicTree->SetDirectory(0);
320 }
321 AliTPCcalibCosmic::AddTree(fCosmicTree,cosmic->fCosmicTree);
322 }
91fd44c9 323}
324
9b27d39b 325
326
327
f7f33dec 328void AliTPCcalibCosmic::Process(AliESDEvent *event) {
9b27d39b 329 //
236f5592 330 // Process of the ESD event - fill calibration components
9b27d39b 331 //
f7f33dec 332 if (!event) {
333 Printf("ERROR: ESD not available");
334 return;
9b27d39b 335 }
76273318 336 AliESDfriend *esdFriend=static_cast<AliESDfriend*>(event->FindListObject("AliESDfriend"));
337 if (!esdFriend) {
338 Printf("ERROR: esdFriend not available");
f7f33dec 339 return;
340 }
2acad464 341
76c58ee2 342 //
343 //Int_t isOK=kTRUE;
344 // COSMIC not signed properly
345 // UInt_t specie = event->GetEventSpecie(); // select only cosmic events
346 //if (specie==AliRecoParam::kCosmic || specie==AliRecoParam::kCalib) {
347 // isOK = kTRUE;
348 //}
349 //if (!isOK) return;
350 // Work around
351 FindCosmicPairs(event);
76c58ee2 352 const AliMultiplicity *multiplicity = event->GetMultiplicity();
353 Int_t ntracklets = multiplicity->GetNumberOfTracklets();
354 if (ntracklets>6) return; // filter out "normal" event with high multiplicity
355 const TString &trigger = event->GetFiredTriggerClasses();
356 if (trigger.Contains("C0OB0")==0) return;
357
108953e9 358
54b76c13 359 FindPairs(event); // nearly everything takes place in find pairs...
360
2acad464 361 if (GetDebugLevel()>20) printf("Hallo world: Im here and processing an event\n");
9b27d39b 362 Int_t ntracks=event->GetNumberOfTracks();
363 fHistNTracks->Fill(ntracks);
15e48021 364
54b76c13 365}
9b27d39b 366
f7f33dec 367
76c58ee2 368void AliTPCcalibCosmic::FillHistoPerformance(const AliExternalTrackParam *par0, const AliExternalTrackParam *par1, const AliExternalTrackParam *inner0, const AliExternalTrackParam */*inner1*/, AliTPCseed *seed0, AliTPCseed *seed1, const AliExternalTrackParam *param0Combined , Int_t cross){
91fd44c9 369 //
a390f11f 370 // par0,par1 - parameter of tracks at DCA 0
371 // inner0,inner1 - parameter of tracks at the TPC entrance
372 // seed0, seed1 - detailed track information
373 // param0Combined - Use combined track parameters for binning
91fd44c9 374 //
8a92e133 375 Int_t kMinCldEdx =20;
376 Int_t ncl0 = seed0->GetNumberOfClusters();
377 Int_t ncl1 = seed1->GetNumberOfClusters();
91fd44c9 378 const Double_t kpullCut = 10;
76c58ee2 379 Double_t x[10];
91fd44c9 380 Double_t xyz0[3];
381 Double_t xyz1[3];
382 par0->GetXYZ(xyz0);
383 par1->GetXYZ(xyz1);
384 Double_t radius0 = TMath::Sqrt(xyz0[0]*xyz0[0]+xyz0[1]*xyz0[1]);
385 Double_t radius1 = TMath::Sqrt(xyz1[0]*xyz1[0]+xyz1[1]*xyz1[1]);
386 inner0->GetXYZ(xyz0);
387 Double_t alpha = TMath::ATan2(xyz0[1],xyz0[0]);
388 // bin parameters
389 x[1] = TMath::Min(ncl0,ncl1);
390 x[2] = (radius0+radius1)*0.5;
a390f11f 391 x[3] = param0Combined->GetZ();
392 x[4] = inner0->GetSnp();
393 x[5] = param0Combined->GetTgl();
394 x[6] = param0Combined->GetSigned1Pt();
395 x[7] = param0Combined->Pt();
91fd44c9 396 x[8] = alpha;
76c58ee2 397 x[9] = cross;
91fd44c9 398 // deltas
399 Double_t delta[6];
400 Double_t sigma[6];
401 delta[0] = (par0->GetY()+par1->GetY());
402 delta[1] = (par0->GetZ()-par1->GetZ());
403 delta[2] = (par0->GetAlpha()-par1->GetAlpha()-TMath::Pi());
404 delta[3] = (par0->GetTgl()+par1->GetTgl());
405 delta[4] = (par0->GetParameter()[4]+par1->GetParameter()[4]);
406 delta[5] = (par0->Pt()-par1->Pt())/((par0->Pt()+par1->Pt())*0.5);
407 //
408 sigma[0] = TMath::Sqrt(par0->GetSigmaY2()+par1->GetSigmaY2());
409 sigma[1] = TMath::Sqrt(par0->GetSigmaZ2()+par1->GetSigmaZ2());
410 sigma[2] = TMath::Sqrt(par0->GetSigmaSnp2()+par1->GetSigmaSnp2());
411 sigma[3] = TMath::Sqrt(par0->GetSigmaTgl2()+par1->GetSigmaTgl2());
412 sigma[4] = TMath::Sqrt(par0->GetSigma1Pt2()+par1->GetSigma1Pt2());
413 sigma[5] = sigma[4]*((par0->Pt()+par1->Pt())*0.5);
414 //
415 Bool_t isOK = kTRUE;
416 for (Int_t ivar=0;ivar<6;ivar++){
417 if (sigma[ivar]==0) isOK=kFALSE;
418 x[0]= delta[ivar]/sigma[ivar];
419 if (TMath::Abs(x[0])>kpullCut) isOK = kFALSE;
420 }
421 //
422
423 if (isOK) for (Int_t ivar=0;ivar<6;ivar++){
76c58ee2 424 x[0]= delta[ivar]; // Modifiation 10.10 use not normalized deltas
425 if (ivar==2 || ivar ==3) x[0]*=1000; // angles in radian
91fd44c9 426 fHistoDelta[ivar]->Fill(x);
427 if (sigma[ivar]>0){
428 x[0]= delta[ivar]/sigma[ivar];
429 fHistoPull[ivar]->Fill(x);
430 }
431 }
8a92e133 432
433 //
434 // Fill dedx performance
435 //
436 for (Int_t ipad=0; ipad<4;ipad++){
437 //
438 //
439 //
440 Int_t row0=0;
441 Int_t row1=160;
442 if (ipad==0) row1=63;
443 if (ipad==1) {row0=63; row1=63+64;}
444 if (ipad==2) {row0=128;}
445 Int_t nclUp = TMath::Nint(seed0->CookdEdxAnalytical(0.01,0.7,0,row0,row1,2));
446 Int_t nclDown = TMath::Nint(seed1->CookdEdxAnalytical(0.01,0.7,0,row0,row1,2));
447 Int_t minCl = TMath::Min(nclUp,nclDown);
448 if (minCl<kMinCldEdx) continue;
449 x[1] = minCl;
450 //
451 Float_t dEdxTotUp = seed0->CookdEdxAnalytical(0.01,0.7,0,row0,row1);
452 Float_t dEdxTotDown = seed1->CookdEdxAnalytical(0.01,0.7,0,row0,row1);
453 Float_t dEdxMaxUp = seed0->CookdEdxAnalytical(0.01,0.7,1,row0,row1);
454 Float_t dEdxMaxDown = seed1->CookdEdxAnalytical(0.01,0.7,1,row0,row1);
455 //
456 if (dEdxTotDown<=0) continue;
457 if (dEdxMaxDown<=0) continue;
458 x[0]=dEdxTotUp/dEdxTotDown;
459 fHistodEdxTot[ipad]->Fill(x);
460 x[0]=dEdxMaxUp/dEdxMaxDown;
461 fHistodEdxMax[ipad]->Fill(x);
462 }
463
464
91fd44c9 465
466}
467
236f5592 468void AliTPCcalibCosmic::FindPairs(const AliESDEvent *event){
9b27d39b 469 //
470 // Find cosmic pairs
04087794 471 //
472 // Track0 is choosen in upper TPC part
473 // Track1 is choosen in lower TPC part
9b27d39b 474 //
2acad464 475 if (GetDebugLevel()>20) printf("Hallo world: Im here\n");
76273318 476 AliESDfriend *esdFriend=static_cast<AliESDfriend*>(event->FindListObject("AliESDfriend"));
9b27d39b 477 Int_t ntracks=event->GetNumberOfTracks();
9b27d39b 478 TObjArray tpcSeeds(ntracks);
479 if (ntracks==0) return;
480 Double_t vtxx[3]={0,0,0};
481 Double_t svtxx[3]={0.000001,0.000001,100.};
482 AliESDVertex vtx(vtxx,svtxx);
483 //
484 //track loop
485 //
54b76c13 486 for (Int_t i=0;i<ntracks;++i) {
487 AliESDtrack *track = event->GetTrack(i);
488 fClusters->Fill(track->GetTPCNcls());
489
490 const AliExternalTrackParam * trackIn = track->GetInnerParam();
491 const AliExternalTrackParam * trackOut = track->GetOuterParam();
492 if (!trackIn) continue;
493 if (!trackOut) continue;
860b3d93 494 if (ntracks>4 && TMath::Abs(trackIn->GetTgl())<0.0015) continue; // filter laser
495
496
76273318 497 AliESDfriendTrack *friendTrack = esdFriend->GetTrack(i);
b9908d0b 498 if (!friendTrack) continue;
9b27d39b 499 TObject *calibObject;
b9908d0b 500 AliTPCseed *seed = 0;
9b27d39b 501 for (Int_t l=0;(calibObject=friendTrack->GetCalibObject(l));++l) {
502 if ((seed=dynamic_cast<AliTPCseed*>(calibObject))) break;
503 }
504 if (seed) tpcSeeds.AddAt(seed,i);
54b76c13 505
506 Double_t meanP = 0.5*(trackIn->GetP() + trackOut->GetP());
507 if (seed && track->GetTPCNcls() > 80 + 60/(1+TMath::Exp(-meanP+5))) {
15e48021 508 fDeDx->Fill(meanP, seed->CookdEdxNorm(0.0,0.45,0,0,159));
54b76c13 509 //
15e48021 510 if (meanP > 0.4 && meanP < 0.45) fDeDxMIP->Fill(seed->CookdEdxNorm(0.0,0.45,0,0,159));
54b76c13 511 //
82628455 512 // if (GetDebugLevel()>0&&meanP>0.2&&seed->CookdEdxNorm(0.0,0.45,0,0,159)>300) {
513// //TFile *curfile = AliAnalysisManager::GetAnalysisManager()->GetTree()->GetCurrentFile();
514// //if (curfile) printf(">>> p+ in file: %s \t event: %i \t Number of ESD tracks: %i \n", curfile->GetName(), (int)event->GetEventNumberInFile(), (int)ntracks);
515// // if (track->GetOuterParam()->GetAlpha()<0) cout << " Polartiy: " << track->GetSign() << endl;
516// }
54b76c13 517
518 }
519
9b27d39b 520 }
54b76c13 521
9b27d39b 522 if (ntracks<2) return;
523 //
524 // Find pairs
525 //
526 for (Int_t i=0;i<ntracks;++i) {
527 AliESDtrack *track0 = event->GetTrack(i);
04087794 528 // track0 - choosen upper part
529 if (!track0) continue;
530 if (!track0->GetOuterParam()) continue;
531 if (track0->GetOuterParam()->GetAlpha()<0) continue;
e9362f9d 532 Double_t dir0[3];
533 track0->GetDirection(dir0);
04087794 534 for (Int_t j=0;j<ntracks;++j) {
535 if (i==j) continue;
536 AliESDtrack *track1 = event->GetTrack(j);
537 //track 1 lower part
538 if (!track1) continue;
539 if (!track1->GetOuterParam()) continue;
540 if (track1->GetOuterParam()->GetAlpha()>0) continue;
541 //
e9362f9d 542 Double_t dir1[3];
543 track1->GetDirection(dir1);
54b76c13 544
9b27d39b 545 AliTPCseed * seed0 = (AliTPCseed*) tpcSeeds.At(i);
546 AliTPCseed * seed1 = (AliTPCseed*) tpcSeeds.At(j);
547 if (! seed0) continue;
548 if (! seed1) continue;
15e48021 549 Float_t dedx0 = seed0->CookdEdxNorm(0.05,0.55,0,0,159);
550 Float_t dedx1 = seed1->CookdEdxNorm(0.05,0.55,0,0,159);
bca20570 551 //
15e48021 552 Float_t dedx0I = seed0->CookdEdxNorm(0.05,0.55,0,0,63);
553 Float_t dedx1I = seed1->CookdEdxNorm(0.05,0.55,0,0,63);
bca20570 554 //
15e48021 555 Float_t dedx0O = seed0->CookdEdxNorm(0.05,0.55,0,64,159);
556 Float_t dedx1O = seed1->CookdEdxNorm(0.05,0.55,0,64,159);
bca20570 557 //
e9362f9d 558 Float_t dir = (dir0[0]*dir1[0] + dir0[1]*dir1[1] + dir0[2]*dir1[2]);
9b27d39b 559 Float_t d0 = track0->GetLinearD(0,0);
560 Float_t d1 = track1->GetLinearD(0,0);
561 //
562 // conservative cuts - convergence to be guarantied
563 // applying before track propagation
564 if (TMath::Abs(d0+d1)>fCutMaxD) continue; // distance to the 0,0
565 if (dir>fCutMinDir) continue; // direction vector product
566 Float_t bz = AliTracker::GetBz();
567 Float_t dvertex0[2]; //distance to 0,0
568 Float_t dvertex1[2]; //distance to 0,0
569 track0->GetDZ(0,0,0,bz,dvertex0);
570 track1->GetDZ(0,0,0,bz,dvertex1);
571 if (TMath::Abs(dvertex0[1])>250) continue;
572 if (TMath::Abs(dvertex1[1])>250) continue;
573 //
574 //
575 //
576 Float_t dmax = TMath::Max(TMath::Abs(d0),TMath::Abs(d1));
577 AliExternalTrackParam param0(*track0);
578 AliExternalTrackParam param1(*track1);
579 //
580 // Propagate using Magnetic field and correct fo material budget
581 //
a390f11f 582 Double_t sign0=-1;
583 Double_t sign1=1;
584 Double_t maxsnp=0.90;
9963b5e2 585 AliTracker::PropagateTrackToBxByBz(&param0,dmax+1,TDatabasePDG::Instance()->GetParticle("e-")->Mass(),3,kTRUE,maxsnp,sign0);
586 AliTracker::PropagateTrackToBxByBz(&param1,dmax+1,TDatabasePDG::Instance()->GetParticle("e-")->Mass(),3,kTRUE,maxsnp,sign1);
9b27d39b 587 //
588 // Propagate rest to the 0,0 DCA - z should be ignored
589 //
590 Bool_t b0 = param0.PropagateToDCA(&vtx,bz,1000);
591 Bool_t b1 = param1.PropagateToDCA(&vtx,bz,1000);
592 //
593 param0.GetDZ(0,0,0,bz,dvertex0);
594 param1.GetDZ(0,0,0,bz,dvertex1);
a6dc0cf6 595 if (TMath::Abs(param0.GetZ()-param1.GetZ())>fCutMaxDz) continue;
9b27d39b 596 //
597 Double_t xyz0[3];//,pxyz0[3];
598 Double_t xyz1[3];//,pxyz1[3];
599 param0.GetXYZ(xyz0);
600 param1.GetXYZ(xyz1);
601 Bool_t isPair = IsPair(&param0,&param1);
602 //
54b76c13 603 if (isPair) FillAcordeHist(track0);
76c58ee2 604 if (isPair &&param0.Pt()>1) {
605 const TString &trigger = event->GetFiredTriggerClasses();
606 UInt_t specie = event->GetEventSpecie();
607 printf("COSMIC ?\t%s\t%d\t%f\t%f\n", trigger.Data(),specie, param0.GetZ(), param1.GetZ());
608 }
15e48021 609 //
610 // combined track params
611 //
612 AliExternalTrackParam *par0U=MakeCombinedTrack(&param0,&param1);
613 AliExternalTrackParam *par1U=MakeCombinedTrack(&param1,&param0);
76c58ee2 614
54b76c13 615 //
9b27d39b 616 if (fStreamLevel>0){
617 TTreeSRedirector * cstream = GetDebugStreamer();
108953e9 618 //printf("My stream=%p\n",(void*)cstream);
e9362f9d 619 AliExternalTrackParam *ip0 = (AliExternalTrackParam *)track0->GetInnerParam();
620 AliExternalTrackParam *ip1 = (AliExternalTrackParam *)track1->GetInnerParam();
621 AliExternalTrackParam *op0 = (AliExternalTrackParam *)track0->GetOuterParam();
622 AliExternalTrackParam *op1 = (AliExternalTrackParam *)track1->GetOuterParam();
623 Bool_t isCrossI = ip0->GetZ()*ip1->GetZ()<0;
624 Bool_t isCrossO = op0->GetZ()*op1->GetZ()<0;
625 Double_t alpha0 = TMath::ATan2(dir0[1],dir0[0]);
626 Double_t alpha1 = TMath::ATan2(dir1[1],dir1[0]);
91fd44c9 627 //
628 //
629 //
76c58ee2 630 Int_t cross =0; // 0 no cross, 2 cross on both sides
631 if (isCrossI) cross+=1;
632 if (isCrossO) cross+=1;
633 FillHistoPerformance(&param0, &param1, ip0, ip1, seed0, seed1,par0U, cross);
9b27d39b 634 if (cstream) {
635 (*cstream) << "Track0" <<
108953e9 636 "run="<<fRun<< // run number
637 "event="<<fEvent<< // event number
638 "time="<<fTime<< // time stamp of event
639 "trigger="<<fTrigger<< // trigger
15e48021 640 "triggerClass="<<&fTriggerClass<< // trigger
108953e9 641 "mag="<<fMagF<< // magnetic field
9b27d39b 642 "dir="<<dir<< // direction
54b76c13 643 "OK="<<isPair<< // will be accepted
9b27d39b 644 "b0="<<b0<< // propagate status
645 "b1="<<b1<< // propagate status
e9362f9d 646 "crossI="<<isCrossI<< // cross inner
647 "crossO="<<isCrossO<< // cross outer
648 //
9b27d39b 649 "Orig0.=" << track0 << // original track 0
650 "Orig1.=" << track1 << // original track 1
651 "Tr0.="<<&param0<< // track propagated to the DCA 0,0
652 "Tr1.="<<&param1<< // track propagated to the DCA 0,0
e9362f9d 653 "Ip0.="<<ip0<< // inner param - upper
654 "Ip1.="<<ip1<< // inner param - lower
655 "Op0.="<<op0<< // outer param - upper
656 "Op1.="<<op1<< // outer param - lower
15e48021 657 "Up0.="<<par0U<< // combined track 0
658 "Up1.="<<par1U<< // combined track 1
e9362f9d 659 //
9b27d39b 660 "v00="<<dvertex0[0]<< // distance using kalman
661 "v01="<<dvertex0[1]<< //
662 "v10="<<dvertex1[0]<< //
663 "v11="<<dvertex1[1]<< //
664 "d0="<<d0<< // linear distance to 0,0
665 "d1="<<d1<< // linear distance to 0,0
666 //
e9362f9d 667 //
668 //
669 "x00="<<xyz0[0]<< // global position close to vertex
9b27d39b 670 "x01="<<xyz0[1]<<
671 "x02="<<xyz0[2]<<
672 //
e9362f9d 673 "x10="<<xyz1[0]<< // global position close to vertex
9b27d39b 674 "x11="<<xyz1[1]<<
675 "x12="<<xyz1[2]<<
676 //
e9362f9d 677 "alpha0="<<alpha0<<
678 "alpha1="<<alpha1<<
679 "dir00="<<dir0[0]<< // direction upper
680 "dir01="<<dir0[1]<<
681 "dir02="<<dir0[2]<<
682 //
683 "dir10="<<dir1[0]<< // direction lower
684 "dir11="<<dir1[1]<<
685 "dir12="<<dir1[2]<<
686 //
687 //
54b76c13 688 "Seed0.=" << seed0 << // original seed 0
689 "Seed1.=" << seed1 << // original seed 1
bca20570 690 //
691 "dedx0="<<dedx0<< // dedx0 - all
692 "dedx1="<<dedx1<< // dedx1 - all
693 //
54b76c13 694 "dedx0I="<<dedx0I<< // dedx0 - inner ROC
695 "dedx1I="<<dedx1I<< // dedx1 - inner ROC
bca20570 696 //
54b76c13 697 "dedx0O="<<dedx0O<< // dedx0 - outer ROC
698 "dedx1O="<<dedx1O<< // dedx1 - outer ROC
9b27d39b 699 "\n";
700 }
15e48021 701 }
702 delete par0U;
703 delete par1U;
9b27d39b 704 }
705 }
706}
707
9b27d39b 708
bca20570 709
710
54b76c13 711void AliTPCcalibCosmic::FillAcordeHist(AliESDtrack *upperTrack) {
712
713 // Pt cut to select straight tracks which can be easily propagated to ACORDE which is outside the magnetic field
714 if (upperTrack->Pt() < 10 || upperTrack->GetTPCNcls() < 80) return;
715
76273318 716 const Double_t acordePlane = 850.; // distance of the central Acorde detectors to the beam line at y =0
54b76c13 717 const Double_t roof = 210.5; // distance from x =0 to end of magnet roof
718
719 Double_t r[3];
720 upperTrack->GetXYZ(r);
721 Double_t d[3];
722 upperTrack->GetDirection(d);
723 Double_t x,z;
76273318 724 z = r[2] + (d[2]/d[1])*(acordePlane - r[1]);
725 x = r[0] + (d[0]/d[1])*(acordePlane - r[1]);
54b76c13 726
727 if (x > roof) {
76273318 728 x = r[0] + (d[0]/(d[0]+d[1]))*(acordePlane+roof-r[0]-r[1]);
729 z = r[2] + (d[2]/(d[0]+d[1]))*(acordePlane+roof-r[0]-r[1]);
54b76c13 730 }
731 if (x < -roof) {
76273318 732 x = r[0] + (d[0]/(d[1]-d[0]))*(acordePlane+roof+r[0]-r[1]);
733 z = r[2] + (d[2]/(d[1]-d[0]))*(acordePlane+roof+r[0]-r[1]);
54b76c13 734 }
735
736 fModules->Fill(z, x);
737
738}
739
740
741
3326b323 742Long64_t AliTPCcalibCosmic::Merge(TCollection *const li) {
236f5592 743 //
744 // component merging
745 //
bca20570 746
747 TIterator* iter = li->MakeIterator();
748 AliTPCcalibCosmic* cal = 0;
749
750 while ((cal = (AliTPCcalibCosmic*)iter->Next())) {
751 if (!cal->InheritsFrom(AliTPCcalibCosmic::Class())) {
860b3d93 752 //Error("Merge","Attempt to add object of class %s to a %s", cal->ClassName(), this->ClassName());
bca20570 753 return -1;
754 }
755
54b76c13 756 fHistNTracks->Add(cal->GetHistNTracks());
757 fClusters->Add(cal-> GetHistClusters());
758 fModules->Add(cal->GetHistAcorde());
759 fHistPt->Add(cal->GetHistPt());
760 fDeDx->Add(cal->GetHistDeDx());
761 fDeDxMIP->Add(cal->GetHistMIP());
91fd44c9 762 Add(cal);
bca20570 763 }
bca20570 764 return 0;
9b27d39b 765
f7f33dec 766}
767
54b76c13 768
236f5592 769Bool_t AliTPCcalibCosmic::IsPair(AliExternalTrackParam *tr0, AliExternalTrackParam *tr1) const{
9b27d39b 770 //
771 //
772 /*
773 // 0. Same direction - OPOSITE - cutDir +cutT
774 TCut cutDir("cutDir","dir<-0.99")
775 // 1.
776 TCut cutT("cutT","abs(Tr1.fP[3]+Tr0.fP[3])<0.03")
777 //
778 // 2. The same rphi
779 TCut cutD("cutD","abs(Tr0.fP[0]+Tr1.fP[0])<5")
780 //
781 //
782 //
783 TCut cutPt("cutPt","abs(Tr1.fP[4]+Tr0.fP[4])<1&&abs(Tr0.fP[4])+abs(Tr1.fP[4])<10");
784 // 1/Pt diff cut
785 */
786 const Double_t *p0 = tr0->GetParameter();
787 const Double_t *p1 = tr1->GetParameter();
788 if (TMath::Abs(p0[3]+p1[3])>fCutTheta) return kFALSE;
a6dc0cf6 789 if (TMath::Abs(p0[1]-p1[1])>fCutMaxDz) return kFALSE;
9b27d39b 790 if (TMath::Abs(p0[0]+p1[0])>fCutMaxD) return kFALSE;
a6dc0cf6 791
9b27d39b 792 Double_t d0[3], d1[3];
793 tr0->GetDirection(d0);
794 tr1->GetDirection(d1);
795 if (d0[0]*d1[0] + d0[1]*d1[1] + d0[2]*d1[2] >fCutMinDir) return kFALSE;
796 //
797 return kTRUE;
798}
54b76c13 799
800
801
802Double_t AliTPCcalibCosmic::CalculateMIPvalue(TH1F * hist) {
236f5592 803 //
804 // Calculate the MIP value - gaussian fit used
805 //
54b76c13 806
807 TF1 * funcDoubleGaus = new TF1("funcDoubleGaus", "gaus(0)+gaus(3)",0,1000);
808 funcDoubleGaus->SetParameters(hist->GetEntries()*0.75,hist->GetMean()/1.3,hist->GetMean()*0.10,
809 hist->GetEntries()*0.25,hist->GetMean()*1.3,hist->GetMean()*0.10);
810 hist->Fit(funcDoubleGaus);
3326b323 811 Double_t aMIPvalue = TMath::Min(funcDoubleGaus->GetParameter(1),funcDoubleGaus->GetParameter(4));
54b76c13 812
813 delete funcDoubleGaus;
814
3326b323 815 return aMIPvalue;
54b76c13 816
817}
9b27d39b 818
819
f7f33dec 820
54b76c13 821
57dc06f2 822void AliTPCcalibCosmic::CalculateBetheParams(TH2F */*hist*/, Double_t * /*initialParam*/) {
823 //
824 // Not implemented yet
825 //
54b76c13 826 return;
827
828}
829
830
3326b323 831void AliTPCcalibCosmic::BinLogX(THnSparse *const h, Int_t axisDim) {
91fd44c9 832
833 // Method for the correct logarithmic binning of histograms
834
835 TAxis *axis = h->GetAxis(axisDim);
836 int bins = axis->GetNbins();
837
838 Double_t from = axis->GetXmin();
839 Double_t to = axis->GetXmax();
3326b323 840 Double_t *newBins = new Double_t[bins + 1];
91fd44c9 841
3326b323 842 newBins[0] = from;
91fd44c9 843 Double_t factor = pow(to/from, 1./bins);
844
845 for (int i = 1; i <= bins; i++) {
3326b323 846 newBins[i] = factor * newBins[i-1];
91fd44c9 847 }
3326b323 848 axis->Set(bins, newBins);
4ce766eb 849 delete [] newBins;
91fd44c9 850
851}
852
853
3326b323 854void AliTPCcalibCosmic::BinLogX(TH1 *const h) {
f7f33dec 855
856 // Method for the correct logarithmic binning of histograms
857
858 TAxis *axis = h->GetXaxis();
859 int bins = axis->GetNbins();
860
861 Double_t from = axis->GetXmin();
862 Double_t to = axis->GetXmax();
3326b323 863 Double_t *newBins = new Double_t[bins + 1];
f7f33dec 864
3326b323 865 newBins[0] = from;
f7f33dec 866 Double_t factor = pow(to/from, 1./bins);
867
868 for (int i = 1; i <= bins; i++) {
3326b323 869 newBins[i] = factor * newBins[i-1];
f7f33dec 870 }
3326b323 871 axis->Set(bins, newBins);
4ce766eb 872 delete [] newBins;
f7f33dec 873
874}
875
7b18d067 876
860b3d93 877AliExternalTrackParam *AliTPCcalibCosmic::MakeTrack(const AliExternalTrackParam *track0, const AliExternalTrackParam *track1){
878 //
236f5592 879 // Make a atrack using the kalman update of track0 and track1
860b3d93 880 //
881 AliExternalTrackParam *par1R= new AliExternalTrackParam(*track1);
882 par1R->Rotate(track0->GetAlpha());
15e48021 883 par1R->PropagateTo(track0->GetX(),AliTracker::GetBz());
860b3d93 884 //
885 //
886 Double_t * param = (Double_t*)par1R->GetParameter();
887 Double_t * covar = (Double_t*)par1R->GetCovariance();
15e48021 888
860b3d93 889 param[0]*=1; //OK
890 param[1]*=1; //OK
891 param[2]*=1; //?
892 param[3]*=-1; //OK
893 param[4]*=-1; //OK
894 //
895 covar[6] *=-1.; covar[7] *=-1.; covar[8] *=-1.;
896 //covar[10]*=-1.; covar[11]*=-1.; covar[12]*=-1.;
897 covar[13]*=-1.;
860b3d93 898 return par1R;
899}
900
15e48021 901AliExternalTrackParam *AliTPCcalibCosmic::MakeCombinedTrack(const AliExternalTrackParam *track0, const AliExternalTrackParam *track1){
902 //
903 // Make combined track
904 //
905 //
906 AliExternalTrackParam * par1T = MakeTrack(track0,track1);
907 AliExternalTrackParam * par0U = new AliExternalTrackParam(*track0);
908 //
909 UpdateTrack(*par0U,*par1T);
910 delete par1T;
911 return par0U;
912}
913
914
860b3d93 915void AliTPCcalibCosmic::UpdateTrack(AliExternalTrackParam &track1, const AliExternalTrackParam &track2){
916 //
917 // Update track 1 with track 2
918 //
919 //
920 //
921 TMatrixD vecXk(5,1); // X vector
922 TMatrixD covXk(5,5); // X covariance
923 TMatrixD matHk(5,5); // vector to mesurement
924 TMatrixD measR(5,5); // measurement error
925 TMatrixD vecZk(5,1); // measurement
926 //
927 TMatrixD vecYk(5,1); // Innovation or measurement residual
928 TMatrixD matHkT(5,5);
929 TMatrixD matSk(5,5); // Innovation (or residual) covariance
930 TMatrixD matKk(5,5); // Optimal Kalman gain
931 TMatrixD mat1(5,5); // update covariance matrix
932 TMatrixD covXk2(5,5); //
933 TMatrixD covOut(5,5);
934 //
935 Double_t *param1=(Double_t*) track1.GetParameter();
936 Double_t *covar1=(Double_t*) track1.GetCovariance();
937 Double_t *param2=(Double_t*) track2.GetParameter();
938 Double_t *covar2=(Double_t*) track2.GetCovariance();
939 //
940 // copy data to the matrix
941 for (Int_t ipar=0; ipar<5; ipar++){
860b3d93 942 for (Int_t jpar=0; jpar<5; jpar++){
943 covXk(ipar,jpar) = covar1[track1.GetIndex(ipar, jpar)];
944 measR(ipar,jpar) = covar2[track2.GetIndex(ipar, jpar)];
15e48021 945 matHk(ipar,jpar)=0;
946 mat1(ipar,jpar)=0;
860b3d93 947 }
15e48021 948 vecXk(ipar,0) = param1[ipar];
949 vecZk(ipar,0) = param2[ipar];
950 matHk(ipar,ipar)=1;
951 mat1(ipar,ipar)=0;
860b3d93 952 }
953 //
954 //
955 //
956 //
860b3d93 957 //
958 vecYk = vecZk-matHk*vecXk; // Innovation or measurement residual
959 matHkT=matHk.T(); matHk.T();
960 matSk = (matHk*(covXk*matHkT))+measR; // Innovation (or residual) covariance
961 matSk.Invert();
962 matKk = (covXk*matHkT)*matSk; // Optimal Kalman gain
963 vecXk += matKk*vecYk; // updated vector
860b3d93 964 covXk2 = (mat1-(matKk*matHk));
965 covOut = covXk2*covXk;
966 //
967 //
968 //
969 // copy from matrix to parameters
970 if (0) {
971 vecXk.Print();
972 vecZk.Print();
973 //
974 measR.Print();
975 covXk.Print();
976 covOut.Print();
977 //
978 track1.Print();
979 track2.Print();
980 }
981
982 for (Int_t ipar=0; ipar<5; ipar++){
983 param1[ipar]= vecXk(ipar,0) ;
984 for (Int_t jpar=0; jpar<5; jpar++){
985 covar1[track1.GetIndex(ipar, jpar)]=covOut(ipar,jpar);
986 }
987 }
988}
989
860b3d93 990
991
236f5592 992void AliTPCcalibCosmic::FindCosmicPairs(const AliESDEvent * event) {
76c58ee2 993 //
994 // find cosmic pairs trigger by random trigger
995 //
996 //
997 AliESDVertex *vertexSPD = (AliESDVertex *)event->GetPrimaryVertexSPD();
998 AliESDVertex *vertexTPC = (AliESDVertex *)event->GetPrimaryVertexTPC();
999 AliESDfriend *esdFriend=static_cast<AliESDfriend*>(event->FindListObject("AliESDfriend"));
1000 const Double_t kMinPt=1;
1001 const Double_t kMinPtMax=0.8;
1002 const Double_t kMinNcl=50;
1003 const Double_t kMaxDelta[5]={2,600,0.02,0.02,0.1};
1004 Int_t ntracks=event->GetNumberOfTracks();
5b129619 1005 // Float_t dcaTPC[2]={0,0};
1006 // Float_t covTPC[3]={0,0,0};
76c58ee2 1007
1008 UInt_t specie = event->GetEventSpecie(); // skip laser events
1009 if (specie==AliRecoParam::kCalib) return;
1010
1011
1012
1013 for (Int_t itrack0=0;itrack0<ntracks;itrack0++) {
1014 AliESDtrack *track0 = event->GetTrack(itrack0);
1015 if (!track0) continue;
1016 if (!track0->IsOn(AliESDtrack::kTPCrefit)) continue;
1017
1018 if (TMath::Abs(AliTracker::GetBz())>1&&track0->Pt()<kMinPt) continue;
1019 if (track0->GetTPCncls()<kMinNcl) continue;
1020 if (TMath::Abs(track0->GetY())<kMaxDelta[0]) continue;
1021 if (track0->GetKinkIndex(0)>0) continue;
1022 const Double_t * par0=track0->GetParameter(); //track param at rhe DCA
1023 //rm primaries
1024 //
1025 //track0->GetImpactParametersTPC(dcaTPC,covTPC);
1026 //if (TMath::Abs(dcaTPC[0])<kMaxDelta[0]) continue;
1027 //if (TMath::Abs(dcaTPC[1])<kMaxDelta[0]*2) continue;
5b129619 1028 // const AliExternalTrackParam * trackIn0 = track0->GetInnerParam();
76c58ee2 1029 for (Int_t itrack1=itrack0+1;itrack1<ntracks;itrack1++) {
1030 AliESDtrack *track1 = event->GetTrack(itrack1);
1031 if (!track1) continue;
1032 if (!track1->IsOn(AliESDtrack::kTPCrefit)) continue;
1033 if (track1->GetKinkIndex(0)>0) continue;
1034 if (TMath::Abs(AliTracker::GetBz())>1&&track1->Pt()<kMinPt) continue;
1035 if (track1->GetTPCncls()<kMinNcl) continue;
1036 if (TMath::Abs(AliTracker::GetBz())>1&&TMath::Max(track1->Pt(), track0->Pt())<kMinPtMax) continue;
1037 if (TMath::Abs(track1->GetY())<kMaxDelta[0]) continue;
1038 //track1->GetImpactParametersTPC(dcaTPC,covTPC);
1039 // if (TMath::Abs(dcaTPC[0])<kMaxDelta[0]) continue;
1040 //if (TMath::Abs(dcaTPC[1])<kMaxDelta[0]*2) continue;
1041 //
1042 const Double_t* par1=track1->GetParameter(); //track param at rhe DCA
1043 //
1044 Bool_t isPair=kTRUE;
1045 for (Int_t ipar=0; ipar<5; ipar++){
1046 if (ipar==4&&TMath::Abs(AliTracker::GetBz())<1) continue; // 1/pt not defined for B field off
1047 if (TMath::Abs(TMath::Abs(par0[ipar])-TMath::Abs(par1[ipar]))>kMaxDelta[ipar]) isPair=kFALSE;
1048 }
1049 if (!isPair) continue;
1050 if (TMath::Abs(TMath::Abs(track0->GetAlpha()-track1->GetAlpha())-TMath::Pi())>kMaxDelta[2]) isPair=kFALSE;
1051 //delta with correct sign
1052 /*
1053 TCut cut0="abs(t1.fP[0]+t0.fP[0])<2"
1054 TCut cut3="abs(t1.fP[3]+t0.fP[3])<0.02"
1055 TCut cut4="abs(t1.fP[4]+t0.fP[4])<0.2"
1056 */
1057 if (TMath::Abs(par0[0]+par1[0])>kMaxDelta[0]) isPair=kFALSE; //delta y opposite sign
1058 if (TMath::Abs(par0[3]+par1[3])>kMaxDelta[3]) isPair=kFALSE; //delta tgl opposite sign
1059 if (TMath::Abs(AliTracker::GetBz())>1 && TMath::Abs(par0[4]+par1[4])>kMaxDelta[4]) isPair=kFALSE; //delta 1/pt opposite sign
1060 if (!isPair) continue;
5b129619 1061 // const AliExternalTrackParam * trackIn1 = track1->GetInnerParam();
76c58ee2 1062 //
1063 //
1064 TTreeSRedirector * pcstream = GetDebugStreamer();
1065 Int_t ntracksSPD = vertexSPD->GetNContributors();
1066 Int_t ntracksTPC = vertexTPC->GetNContributors();
1067 //
1068 AliESDfriendTrack *friendTrack0 = esdFriend->GetTrack(itrack0);
1069 if (!friendTrack0) continue;
1070 AliESDfriendTrack *friendTrack1 = esdFriend->GetTrack(itrack1);
1071 if (!friendTrack1) continue;
1072 TObject *calibObject;
1073 AliTPCseed *seed0 = 0;
1074 AliTPCseed *seed1 = 0;
1075 //
1076 for (Int_t l=0;(calibObject=friendTrack0->GetCalibObject(l));++l) {
1077 if ((seed0=dynamic_cast<AliTPCseed*>(calibObject))) break;
1078 }
1079 for (Int_t l=0;(calibObject=friendTrack1->GetCalibObject(l));++l) {
1080 if ((seed1=dynamic_cast<AliTPCseed*>(calibObject))) break;
1081 }
1082 //
1083 if (pcstream){
1084 (*pcstream)<<"pairs"<<
1085 "run="<<fRun<< // run number
1086 "event="<<fEvent<< // event number
1087 "time="<<fTime<< // time stamp of event
1088 "trigger="<<fTrigger<< // trigger
1089 "triggerClass="<<&fTriggerClass<< // trigger
1090 "mag="<<fMagF<< // magnetic field
1091 //
1092 "nSPD="<<ntracksSPD<<
1093 "nTPC="<<ntracksTPC<<
1094 "vSPD.="<<vertexSPD<< //primary vertex -SPD
1095 "vTPC.="<<vertexTPC<< //primary vertex -TPC
1096 "t0.="<<track0<< //track0
1097 "t1.="<<track1<< //track1
1098 "ft0.="<<friendTrack0<< //track0
1099 "ft1.="<<friendTrack1<< //track1
1100 "s0.="<<seed0<< //track0
1101 "s1.="<<seed1<< //track1
1102 "\n";
1103 }
1104 if (!fCosmicTree) {
1105 fCosmicTree = new TTree("pairs","pairs");
1106 fCosmicTree->SetDirectory(0);
1107 }
1108 if (fCosmicTree->GetEntries()==0){
1109 //
1110 fCosmicTree->SetDirectory(0);
1111 fCosmicTree->Branch("t0.",&track0);
1112 fCosmicTree->Branch("t1.",&track1);
1113 fCosmicTree->Branch("ft0.",&friendTrack0);
1114 fCosmicTree->Branch("ft1.",&friendTrack1);
1115 }else{
1116 fCosmicTree->SetBranchAddress("t0.",&track0);
1117 fCosmicTree->SetBranchAddress("t1.",&track1);
1118 fCosmicTree->SetBranchAddress("ft0.",&friendTrack0);
1119 fCosmicTree->SetBranchAddress("ft1.",&friendTrack1);
1120 }
1121 fCosmicTree->Fill();
1122 }
1123 }
1124}
1125
1126
1127void AliTPCcalibCosmic::Terminate(){
1128 //
1129 // copy the cosmic tree to memory resident tree
1130 //
1131 static Int_t counter=0;
1132 printf("AliTPCcalibCosmic::Terminate\t%d\n",counter);
1133 counter++;
1134 AliTPCcalibBase::Terminate();
1135}
1136
860b3d93 1137
76c58ee2 1138void AliTPCcalibCosmic::AddTree(TTree* treeOutput, TTree * treeInput){
1139 //
1140 // Add the content of tree:
1141 // Notice automatic copy of tree in ROOT does not work for such complicated tree
1142 //
1143 AliESDtrack *track0=new AliESDtrack;
1144 AliESDtrack *track1=new AliESDtrack;
1145 AliESDfriendTrack *ftrack0=new AliESDfriendTrack;
1146 AliESDfriendTrack *ftrack1=new AliESDfriendTrack;
1147 treeInput->SetBranchAddress("t0.",&track0);
1148 treeInput->SetBranchAddress("t1.",&track1);
1149 treeInput->SetBranchAddress("ft0.",&ftrack0);
1150 treeInput->SetBranchAddress("ft1.",&ftrack1);
1151 if (treeOutput->GetEntries()==0){
1152 //
1153 treeOutput->SetDirectory(0);
1154 treeOutput->Branch("t0.",&track0);
1155 treeOutput->Branch("t1.",&track1);
1156 treeOutput->Branch("ft0.",&ftrack0);
1157 treeOutput->Branch("ft1.",&ftrack1);
1158 }else{
1159 treeOutput->SetBranchAddress("t0.",&track0);
1160 treeOutput->SetBranchAddress("t1.",&track1);
1161 treeOutput->SetBranchAddress("ft0.",&ftrack0);
1162 treeOutput->SetBranchAddress("ft1.",&ftrack1);
1163 }
1164 Int_t entries= treeInput->GetEntries();
1165 for (Int_t i=0; i<entries; i++){
1166 treeInput->GetEntry(i);
1167 treeOutput->Fill();
1168 }
1169}
1170
1171
1172
1173void AliTPCcalibCosmic::MakeFitTree(TTree * treeInput, TTreeSRedirector *pcstream, const TObjArray * corrArray, Int_t step, Int_t run){
1174 //
1175 // Make fit tree
1176 // refit the tracks with original points + corrected points for each correction
1177 // Input:
1178 // treeInput - tree with cosmic tracks
1179 // pcstream - debug output
1180
1181 // Algorithm:
1182 // Loop over pair of cosmic tracks:
1183 // 1. Find trigger offset between cosmic event and "physic" trigger
1184 // 2. Refit tracks with current transformation
1185 // 3. Refit tracks using additional "primitive" distortion on top
1186 // Best correction estimated as linear combination of corrections
1187 // minimizing the observed distortions
1188 // Observed distortions - matching in the y,z, snp, theta and 1/pt
1189 //
1190 const Double_t kResetCov=20.;
1191 const Double_t kMaxDelta[5]={1,40,0.03,0.01,0.2};
1192 const Double_t kSigma=2.;
1193 const Double_t kMaxTime=1050;
1194 const Double_t kMaxSnp=0.8;
1195 Int_t ncorr=corrArray->GetEntries();
1196 AliTPCTransform *transform = AliTPCcalibDB::Instance()->GetTransform() ;
1197 AliTPCParam *param = AliTPCcalibDB::Instance()->GetParameters();
1198 AliGRPObject* grp = AliTPCcalibDB::Instance()->GetGRP(run);
1199 Double_t time=0.5*(grp->GetTimeStart() +grp->GetTimeEnd());
1200 transform->SetCurrentRun(run);
5b129619 1201 transform->SetCurrentTimeStamp(TMath::Nint(time));
76c58ee2 1202 Double_t covar[15];
1203 for (Int_t i=0;i<15;i++) covar[i]=0;
1204 covar[0]=kSigma*kSigma;
1205 covar[2]=kSigma*kSigma;
1206 covar[5]=kSigma*kSigma/Float_t(150*150);
1207 covar[9]=kSigma*kSigma/Float_t(150*150);
1208 covar[14]=0.2*0.2;
1209 Double_t *distortions = new Double_t[ncorr+1];
1210
1211 AliESDtrack *track0=new AliESDtrack;
1212 AliESDtrack *track1=new AliESDtrack;
1213 AliESDfriendTrack *ftrack0=new AliESDfriendTrack;
1214 AliESDfriendTrack *ftrack1=new AliESDfriendTrack;
1215 treeInput->SetBranchAddress("t0.",&track0);
1216 treeInput->SetBranchAddress("t1.",&track1);
1217 treeInput->SetBranchAddress("ft0.",&ftrack0);
1218 treeInput->SetBranchAddress("ft1.",&ftrack1);
1219 Int_t entries= treeInput->GetEntries();
1220 for (Int_t i=0; i<entries; i+=step){
1221 treeInput->GetEntry(i);
1222 if (i%20==0) printf("%d\n",i);
1223 if (!ftrack0->GetTPCOut()) continue;
1224 if (!ftrack1->GetTPCOut()) continue;
1225 AliTPCseed *seed0=0;
1226 AliTPCseed *seed1=0;
1227 TObject *calibObject;
1228 for (Int_t l=0;(calibObject=ftrack0->GetCalibObject(l));++l) {
1229 if ((seed0=dynamic_cast<AliTPCseed*>(calibObject))) break;
1230 }
1231 for (Int_t l=0;(calibObject=ftrack1->GetCalibObject(l));++l) {
1232 if ((seed1=dynamic_cast<AliTPCseed*>(calibObject))) break;
1233 }
1234 if (!seed0) continue;
1235 if (!seed1) continue;
1236 if (TMath::Abs(seed0->GetSnp())>kMaxSnp) continue;
1237 if (TMath::Abs(seed1->GetSnp())>kMaxSnp) continue;
1238 //
1239 //
1240 Int_t nclA0=0, nclC0=0; // number of clusters
1241 Int_t nclA1=0, nclC1=0; // number of clusters
1242 Int_t ncl0=0,ncl1=0;
1243 Double_t rmin0=300, rmax0=-300; // variables to estimate the time0 - trigger offset
1244 Double_t rmin1=300, rmax1=-300;
1245 Double_t tmin0=2000, tmax0=-2000;
1246 Double_t tmin1=2000, tmax1=-2000;
1247 //
1248 //
1249 // calculate trigger offset usig "missing clusters"
1250 for (Int_t irow=0; irow<159; irow++){
1251 AliTPCclusterMI *cluster0=seed0->GetClusterPointer(irow);
1252 if (cluster0 &&cluster0->GetX()>10){
1253 if (cluster0->GetX()<rmin0) { rmin0=cluster0->GetX(); tmin0=cluster0->GetTimeBin();}
1254 if (cluster0->GetX()>rmax0) { rmax0=cluster0->GetX(); tmax0=cluster0->GetTimeBin();}
1255 ncl0++;
1256 if (cluster0->GetDetector()%36<18) nclA0++;
1257 if (cluster0->GetDetector()%36>=18) nclC0++;
1258 }
1259 AliTPCclusterMI *cluster1=seed1->GetClusterPointer(irow);
1260 if (cluster1&&cluster1->GetX()>10){
1261 if (cluster1->GetX()<rmin1) { rmin1=cluster1->GetX(); tmin1=cluster1->GetTimeBin();}
1262 if (cluster1->GetX()>rmax1) { rmax1=cluster1->GetX(); tmax1=cluster1->GetTimeBin();}
1263 ncl1++;
1264 if (cluster1->GetDetector()%36<18) nclA1++;
1265 if (cluster1->GetDetector()%36>=18) nclC1++;
1266 }
1267 }
1268 Int_t cosmicType=0; // types of cosmic topology
1269 if ((nclA0>nclC0) && (nclA1>nclC1)) cosmicType=0; // AA side
1270 if ((nclA0<nclC0) && (nclA1<nclC1)) cosmicType=1; // CC side
1271 if ((nclA0>nclC0) && (nclA1<nclC1)) cosmicType=2; // AC side
1272 if ((nclA0<nclC0) && (nclA1>nclC1)) cosmicType=3; // CA side
1273 //if ((nclA0>nclC0) && (nclA1<nclC1)) cosmicType=6; // AC side out of time
1274 //if ((nclA0>nclC0) && (nclA1<nclC1)) cosmicType=7; // CA side out of time
1275 //
1276 Double_t deltaTime = 0; // correction for trigger not in time - equalizing the time arival
1277 if ((cosmicType>1)&&TMath::Abs(track1->GetZ()-track0->GetZ())>4){
1278 cosmicType+=4;
1279 deltaTime=0.5*(track1->GetZ()-track0->GetZ())/param->GetZWidth();
1280 if (nclA0>nclC0) deltaTime*=-1; // if A side track
1281 }
1282 //
1283 TVectorD vectorDT(8);
1284 Int_t crossCounter=0;
1285 Double_t deltaTimeCross = AliTPCcalibCosmic::GetDeltaTime(rmin0, rmax0, rmin1, rmax1, tmin0, tmax0, tmin1, tmax1, TMath::Abs(track0->GetY()),vectorDT);
1286 Bool_t isOKTrigger=kTRUE;
1287 for (Int_t ic=0; ic<6;ic++) {
1288 if (TMath::Abs(vectorDT[ic])>0) {
1289 if (vectorDT[ic]+vectorDT[6]<0) isOKTrigger=kFALSE;
1290 if (vectorDT[ic]+vectorDT[7]>kMaxTime) isOKTrigger=kFALSE;
1291 if (isOKTrigger){
1292 crossCounter++;
1293 }
1294 }
1295 }
1296 Double_t deltaTimeCluster=deltaTime;
1297 if ((cosmicType==0 || cosmicType==1) && crossCounter>0){
1298 deltaTimeCluster=deltaTimeCross;
1299 cosmicType+=8;
1300 }
1301 if (nclA0*nclC0>0 || nclA1*nclC1>0) cosmicType+=16; // mixed A side C side - bad for visualization
1302 //
1303 // Apply current transformation
1304 //
1305 //
1306 for (Int_t irow=0; irow<159; irow++){
1307 AliTPCclusterMI *cluster0=seed0->GetClusterPointer(irow);
1308 if (cluster0 &&cluster0->GetX()>10){
1309 Double_t x0[3]={cluster0->GetRow(),cluster0->GetPad(),cluster0->GetTimeBin()+deltaTimeCluster};
1310 Int_t index0[1]={cluster0->GetDetector()};
1311 transform->Transform(x0,index0,0,1);
1312 cluster0->SetX(x0[0]);
1313 cluster0->SetY(x0[1]);
1314 cluster0->SetZ(x0[2]);
1315 //
1316 }
1317 AliTPCclusterMI *cluster1=seed1->GetClusterPointer(irow);
1318 if (cluster1&&cluster1->GetX()>10){
1319 Double_t x1[3]={cluster1->GetRow(),cluster1->GetPad(),cluster1->GetTimeBin()+deltaTimeCluster};
1320 Int_t index1[1]={cluster1->GetDetector()};
1321 transform->Transform(x1,index1,0,1);
1322 cluster1->SetX(x1[0]);
1323 cluster1->SetY(x1[1]);
1324 cluster1->SetZ(x1[2]);
1325 }
1326 }
1327 //
1328 //
1329 Double_t alpha=track0->GetAlpha(); // rotation frame
1330 Double_t cos = TMath::Cos(alpha);
1331 Double_t sin = TMath::Sin(alpha);
1332 Double_t mass = TDatabasePDG::Instance()->GetParticle("mu+")->Mass();
1333 AliExternalTrackParam btrack0=*(ftrack0->GetTPCOut());
1334 AliExternalTrackParam btrack1=*(ftrack1->GetTPCOut());
1335 btrack0.Rotate(alpha);
1336 btrack1.Rotate(alpha);
1337 // change the sign for track 1
1338 Double_t* par1=(Double_t*)btrack0.GetParameter();
1339 par1[3]*=-1;
1340 par1[4]*=-1;
1341 btrack0.AddCovariance(covar);
1342 btrack1.AddCovariance(covar);
1343 btrack0.ResetCovariance(kResetCov);
1344 btrack1.ResetCovariance(kResetCov);
1345 Bool_t isOK=kTRUE;
1346 Bool_t isOKT=kTRUE;
1347 TObjArray tracks0(ncorr+1);
1348 TObjArray tracks1(ncorr+1);
1349 //
1350 Double_t dEdx0Tot=seed0->CookdEdxAnalytical(0.02,0.6,kTRUE);
1351 Double_t dEdx1Tot=seed1->CookdEdxAnalytical(0.02,0.6,kTRUE);
1352 Double_t dEdx0Max=seed0->CookdEdxAnalytical(0.02,0.6,kFALSE);
1353 Double_t dEdx1Max=seed1->CookdEdxAnalytical(0.02,0.6,kFALSE);
1354 //if (TMath::Abs((dEdx0Max+1)/(dEdx0Tot+1)-1.)>0.1) isOK=kFALSE;
1355 //if (TMath::Abs((dEdx1Max+1)/(dEdx1Tot+1)-1.)>0.1) isOK=kFALSE;
1356 ncl0=0; ncl1=0;
1357 for (Int_t icorr=-1; icorr<ncorr; icorr++){
1358 AliExternalTrackParam rtrack0=btrack0;
1359 AliExternalTrackParam rtrack1=btrack1;
1360 AliTPCCorrection *corr = 0;
1361 if (icorr>=0) corr = (AliTPCCorrection*)corrArray->At(icorr);
1362 //
1363 for (Int_t irow=159; irow>0; irow--){
1364 AliTPCclusterMI *cluster=seed0->GetClusterPointer(irow);
1365 if (!cluster) continue;
1366 if (!isOKT) break;
1367 Double_t rD[3]={cluster->GetX(),cluster->GetY(),cluster->GetZ()};
1368 transform->RotatedGlobal2Global(cluster->GetDetector()%36,rD); // transform to global
1369 Float_t r[3]={rD[0],rD[1],rD[2]};
1370 if (corr){
1371 corr->DistortPoint(r, cluster->GetDetector());
1372 }
1373 //
1374 Double_t cov[3]={0.01,0.,0.01};
1375 Double_t lx =cos*r[0]+sin*r[1];
1376 Double_t ly =-sin*r[0]+cos*r[1];
1377 rD[1]=ly; rD[0]=lx; rD[2]=r[2]; //transform to track local
1378 if (!AliTracker::PropagateTrackToBxByBz(&rtrack0, lx,mass,1.,kFALSE)) isOKT=kFALSE;;
1379 if (!rtrack0.Update(&rD[1],cov)) isOKT =kFALSE;
1380 if (icorr<0) ncl0++;
1381 }
1382 //
1383 for (Int_t irow=159; irow>0; irow--){
1384 AliTPCclusterMI *cluster=seed1->GetClusterPointer(irow);
1385 if (!cluster) continue;
1386 if (!isOKT) break;
1387 Double_t rD[3]={cluster->GetX(),cluster->GetY(),cluster->GetZ()};
1388 transform->RotatedGlobal2Global(cluster->GetDetector()%36,rD);
1389 Float_t r[3]={rD[0],rD[1],rD[2]};
1390 if (corr){
1391 corr->DistortPoint(r, cluster->GetDetector());
1392 }
1393 //
1394 Double_t cov[3]={0.01,0.,0.01};
1395 Double_t lx =cos*r[0]+sin*r[1];
1396 Double_t ly =-sin*r[0]+cos*r[1];
1397 rD[1]=ly; rD[0]=lx; rD[2]=r[2];
1398 if (!AliTracker::PropagateTrackToBxByBz(&rtrack1, lx,mass,1.,kFALSE)) isOKT=kFALSE;
1399 if (!rtrack1.Update(&rD[1],cov)) isOKT=kFALSE;
1400 if (icorr<0) ncl1++;
1401 }
1402 if (!AliTracker::PropagateTrackToBxByBz(&rtrack0, 0,mass,10.,kFALSE)) isOKT=kFALSE;
1403 if (!AliTracker::PropagateTrackToBxByBz(&rtrack1, 0,mass,10.,kFALSE)) isOKT=kFALSE;
1404 if (!AliTracker::PropagateTrackToBxByBz(&rtrack0, 0,mass,1.,kFALSE)) isOKT=kFALSE;
1405 if (!AliTracker::PropagateTrackToBxByBz(&rtrack1, 0,mass,1.,kFALSE)) isOKT=kFALSE;
1406 const Double_t *param0=rtrack0.GetParameter();
1407 const Double_t *param1=rtrack1.GetParameter();
1408 for (Int_t ipar=0; ipar<4; ipar++){
1409 if (TMath::Abs(param1[ipar]-param0[ipar])>kMaxDelta[ipar]) isOK=kFALSE;
1410 }
1411 tracks0.AddAt(rtrack0.Clone(), icorr+1);
1412 tracks1.AddAt(rtrack1.Clone(), icorr+1);
1413 AliExternalTrackParam out0=*(ftrack0->GetTPCOut());
1414 AliExternalTrackParam out1=*(ftrack1->GetTPCOut());
1415 Int_t nentries=TMath::Min(ncl0,ncl1);
1416
1417 if (icorr<0) {
1418 (*pcstream)<<"cosmic"<<
1419 "isOK="<<isOK<< // correct all propagation update and also residuals
1420 "isOKT="<<isOKT<< // correct all propagation update
1421 "isOKTrigger="<<isOKTrigger<< // correct? estimate of trigger offset
1422 "id="<<cosmicType<<
1423 //
1424 //
1425 "cross="<<crossCounter<<
1426 "vDT.="<<&vectorDT<<
1427 //
1428 "dTime="<<deltaTime<< // delta time using the A-c side cross
1429 "dTimeCross="<<deltaTimeCross<< // delta time using missing clusters
1430 //
1431 "dEdx0Max="<<dEdx0Max<<
1432 "dEdx0Tot="<<dEdx0Tot<<
1433 "dEdx1Max="<<dEdx1Max<<
1434 "dEdx1Tot="<<dEdx1Tot<<
1435 //
1436 "track0.="<<track0<< // original track 0
1437 "track1.="<<track1<< // original track 1
1438 "out0.="<<&out0<< // outer track 0
1439 "out1.="<<&out1<< // outer track 1
1440 "rtrack0.="<<&rtrack0<< // refitted track with current transform
1441 "rtrack1.="<<&rtrack1<< //
1442 "ncl0="<<ncl0<<
1443 "ncl1="<<ncl1<<
1444 "entries="<<nentries<< // number of clusters
1445 "\n";
1446 }
1447 }
1448 //
1449
1450 if (isOK){
1451 Int_t nentries=TMath::Min(ncl0,ncl1);
1452 for (Int_t ipar=0; ipar<5; ipar++){
1453 for (Int_t icorr=-1; icorr<ncorr; icorr++){
1454 AliTPCCorrection *corr = 0;
1455 if (icorr>=0) corr = (AliTPCCorrection*)corrArray->At(icorr);
1456 //
1457 AliExternalTrackParam *param0=(AliExternalTrackParam *) tracks0.At(icorr+1);
1458 AliExternalTrackParam *param1=(AliExternalTrackParam *) tracks1.At(icorr+1);
1459 distortions[icorr+1]=param1->GetParameter()[ipar]-param0->GetParameter()[ipar];
1460 if (icorr>=0){
1461 distortions[icorr+1]-=distortions[0];
1462 }
1463 //
1464 if (icorr<0){
1465 Double_t bz=AliTrackerBase::GetBz();
1466 Double_t gxyz[3];
1467 param0->GetXYZ(gxyz);
1468 Int_t dtype=20;
1469 Double_t theta=param0->GetParameter()[3];
1470 Double_t phi = alpha;
1471 Double_t snp = track0->GetInnerParam()->GetSnp();
1472 Double_t mean= distortions[0];
1473 Int_t index = param0->GetIndex(ipar,ipar);
1474 Double_t rms=TMath::Sqrt(param1->GetCovariance()[index]+param1->GetCovariance()[index]);
1475 if (crossCounter<1) rms*=1;
1476 Double_t sector=9*phi/TMath::Pi();
1477 Double_t dsec = sector-TMath::Nint(sector+0.5);
1478 Double_t gx=gxyz[0],gy=gxyz[1],gz=gxyz[2];
1479 Double_t refX=TMath::Sqrt(gx*gx+gy*gy);
1480 Double_t dRrec=0;
1481 // Double_t pt=(param0->GetSigned1Pt()+param1->GetSigned1Pt())*0.5;
1482 Double_t pt=(param0->GetSigned1Pt()+param1->GetSigned1Pt())*0.5;
1483
1484 (*pcstream)<<"fit"<< // dump valus for fit
1485 "run="<<run<< //run number
1486 "bz="<<bz<< // magnetic filed used
1487 "dtype="<<dtype<< // detector match type 20
1488 "ptype="<<ipar<< // parameter type
1489 "theta="<<theta<< // theta
1490 "phi="<<phi<< // phi
1491 "snp="<<snp<< // snp
1492 "mean="<<mean<< // mean dist value
1493 "rms="<<rms<< // rms
1494 "sector="<<sector<<
1495 "dsec="<<dsec<<
1496 //
1497 "refX="<<refX<< // reference radius
1498 "gx="<<gx<< // global position
1499 "gy="<<gy<< // global position
1500 "gz="<<gz<< // global position
1501 "dRrec="<<dRrec<< // delta Radius in reconstruction
1502 "pt="<<pt<< //1/pt
1503 "id="<<cosmicType<< //type of the cosmic used
1504 "entries="<<nentries;// number of entries in bin
1505 (*pcstream)<<"cosmicDebug"<<
1506 "p0.="<<param0<< // dump distorted track 0
1507 "p1.="<<param1; // dump distorted track 1
1508 }
1509 if (icorr>=0){
1510 (*pcstream)<<"fit"<<
1511 Form("%s=",corr->GetName())<<distortions[icorr+1]; // dump correction value
1512 (*pcstream)<<"cosmicDebug"<<
1513 Form("%s=",corr->GetName())<<distortions[icorr+1]<< // dump correction value
1514 Form("%sp0.=",corr->GetName())<<param0<< // dump distorted track 0
1515 Form("%sp1.=",corr->GetName())<<param1; // dump distorted track 1
1516 }
1517 } //loop corrections
1518 (*pcstream)<<"fit"<<"isOK="<<isOK<<"\n";
1519 (*pcstream)<<"cosmicDebug"<<"isOK="<<isOK<<"\n";
1520 } //loop over parameters
1521 } // dump results
1522 }//loop tracks
0bc13e06 1523 delete [] distortions;
76c58ee2 1524}
1525
1526
1527
1528Double_t AliTPCcalibCosmic::GetDeltaTime(Double_t rmin0, Double_t rmax0, Double_t rmin1, Double_t rmax1, Double_t tmin0, Double_t tmax0, Double_t tmin1, Double_t tmax1, Double_t dcaR, TVectorD &vectorDT)
1529{
1530 //
1531 // Estimate trigger offset between random cosmic event and "physics" trigger
1532 // Efficiency about 50 % of cases:
1533 // Cases:
1534 // 0. Tracks crossing A side and C side - no match in z - 30 % of cases
1535 // 1. Track only on one side and dissapear at small or at high radiuses - 50 % of cases
1536 // 1.a) rmax<Rc && tmax<Tcmax && tmax>tmin => deltaT=Tcmax-tmax
1537 // 1.b) rmin>Rcmin && tmin<Tcmax && tmin>tmax => deltaT=Tcmax-tmin
1538 // // case the z matching gives proper time
1539 // 1.c) rmax<Rc && tmax>Tcmin && tmax<tmin => deltaT=-tmax
1540 //
1541 // check algorithm:
1542 // TCut cutStop = "(min(rmax0,rmax1)<235||abs(rmin0-rmin1)>10)"; // tracks not registered for full time
1543
1544 // Combinations:
1545 // 0-1 - forbidden
1546 // 0-2 - forbidden
1547 // 0-3 - occur - wrong correlation
1548 // 1-2 - occur - wrong correlation
1549 // 1-3 - forbidden
1550 // 2-3 - occur - small number of outlyers -20%
1551 // Frequency:
1552 // 0 - 106
1553 // 1 - 265
1554 // 2 - 206
1555 // 3 - 367
1556 //
1557 const Double_t kMaxRCut=235; // max radius
1558 const Double_t kMinRCut=TMath::Max(dcaR,90.); // min radius
1559 const Double_t kMaxDCut=30; // max distance for minimal radius
1560 const Double_t kMinTime=110;
1561 const Double_t kMaxTime=950;
1562 Double_t deltaT=0;
1563 Int_t counter=0;
1564 vectorDT[6]=TMath::Min(TMath::Min(tmin0,tmin1),TMath::Min(tmax0,tmax1));
1565 vectorDT[7]=TMath::Max(TMath::Max(tmin0,tmin1),TMath::Max(tmax0,tmax1));
1566 if (TMath::Min(rmax0,rmax1)<kMaxRCut){
1567 // max cross - deltaT>0
1568 if (rmax0<kMaxRCut && tmax0 <kMaxTime && tmax0>tmin0) vectorDT[0]=kMaxTime-tmax0; // disapear at CE
1569 if (rmax1<kMaxRCut && tmax1 <kMaxTime && tmax1>tmin1) vectorDT[1]=kMaxTime-tmax1; // disapear at CE
1570 // min cross - deltaT<0 - OK they are correlated
1571 if (rmax0<kMaxRCut && tmax0 >kMinTime && tmax0<tmin0) vectorDT[2]=-tmax0; // disapear at ROC
1572 if (rmax1<kMaxRCut && tmax1 >kMinTime && tmax1<tmin1) vectorDT[3]=-tmax1; // disapear at ROC
1573 }
1574 if (rmin0> kMinRCut+kMaxDCut && tmin0 <kMaxTime && tmin0>tmax0) vectorDT[4]=kMaxTime-tmin0;
1575 if (rmin1> kMinRCut+kMaxDCut && tmin1 <kMaxTime && tmin1>tmax1) vectorDT[5]=kMaxTime-tmin1;
1576 Bool_t isOK=kTRUE;
1577 for (Int_t i=0; i<6;i++) {
1578 if (TMath::Abs(vectorDT[i])>0) {
1579 counter++;
1580 if (vectorDT[i]+vectorDT[6]<0) isOK=kFALSE;
1581 if (vectorDT[i]+vectorDT[7]>kMaxTime) isOK=kFALSE;
1582 if (isOK) deltaT=vectorDT[i];
1583 }
1584 }
1585 return deltaT;
1586}