]> git.uio.no Git - u/mrichter/AliRoot.git/blame - TPC/AliTPCcalibCosmic.cxx
git://git.uio.no / u / mrichter / AliRoot.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
add nominal voltages per chamber + a simple script to set those values
[u/mrichter/AliRoot.git] / TPC / AliTPCcalibCosmic.cxx
CommitLineData
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 }
2acad464 336
76c58ee2 337 //
338 //Int_t isOK=kTRUE;
339 // COSMIC not signed properly
340 // UInt_t specie = event->GetEventSpecie(); // select only cosmic events
341 //if (specie==AliRecoParam::kCosmic || specie==AliRecoParam::kCalib) {
342 // isOK = kTRUE;
343 //}
344 //if (!isOK) return;
345 // Work around
346 FindCosmicPairs(event);
d0c09227 347 //const AliMultiplicity *multiplicity = event->GetMultiplicity();
348 // Int_t ntracklets = multiplicity->GetNumberOfTracklets();
349 //if (ntracklets>6) return; // filter out "normal" event with high multiplicity
350 //const TString &trigger = event->GetFiredTriggerClasses();
351 //if (trigger.Contains("C0OB0")==0) return;
76c58ee2 352
108953e9 353
54b76c13 354 FindPairs(event); // nearly everything takes place in find pairs...
355
2acad464 356 if (GetDebugLevel()>20) printf("Hallo world: Im here and processing an event\n");
9b27d39b 357 Int_t ntracks=event->GetNumberOfTracks();
358 fHistNTracks->Fill(ntracks);
15e48021 359
54b76c13 360}
9b27d39b 361
f7f33dec 362
76c58ee2 363void 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 364 //
a390f11f 365 // par0,par1 - parameter of tracks at DCA 0
366 // inner0,inner1 - parameter of tracks at the TPC entrance
367 // seed0, seed1 - detailed track information
368 // param0Combined - Use combined track parameters for binning
91fd44c9 369 //
8a92e133 370 Int_t kMinCldEdx =20;
371 Int_t ncl0 = seed0->GetNumberOfClusters();
372 Int_t ncl1 = seed1->GetNumberOfClusters();
91fd44c9 373 const Double_t kpullCut = 10;
76c58ee2 374 Double_t x[10];
91fd44c9 375 Double_t xyz0[3];
376 Double_t xyz1[3];
377 par0->GetXYZ(xyz0);
378 par1->GetXYZ(xyz1);
379 Double_t radius0 = TMath::Sqrt(xyz0[0]*xyz0[0]+xyz0[1]*xyz0[1]);
380 Double_t radius1 = TMath::Sqrt(xyz1[0]*xyz1[0]+xyz1[1]*xyz1[1]);
381 inner0->GetXYZ(xyz0);
382 Double_t alpha = TMath::ATan2(xyz0[1],xyz0[0]);
383 // bin parameters
384 x[1] = TMath::Min(ncl0,ncl1);
385 x[2] = (radius0+radius1)*0.5;
a390f11f 386 x[3] = param0Combined->GetZ();
387 x[4] = inner0->GetSnp();
388 x[5] = param0Combined->GetTgl();
389 x[6] = param0Combined->GetSigned1Pt();
390 x[7] = param0Combined->Pt();
91fd44c9 391 x[8] = alpha;
76c58ee2 392 x[9] = cross;
91fd44c9 393 // deltas
394 Double_t delta[6];
395 Double_t sigma[6];
396 delta[0] = (par0->GetY()+par1->GetY());
397 delta[1] = (par0->GetZ()-par1->GetZ());
398 delta[2] = (par0->GetAlpha()-par1->GetAlpha()-TMath::Pi());
399 delta[3] = (par0->GetTgl()+par1->GetTgl());
400 delta[4] = (par0->GetParameter()[4]+par1->GetParameter()[4]);
401 delta[5] = (par0->Pt()-par1->Pt())/((par0->Pt()+par1->Pt())*0.5);
402 //
403 sigma[0] = TMath::Sqrt(par0->GetSigmaY2()+par1->GetSigmaY2());
404 sigma[1] = TMath::Sqrt(par0->GetSigmaZ2()+par1->GetSigmaZ2());
405 sigma[2] = TMath::Sqrt(par0->GetSigmaSnp2()+par1->GetSigmaSnp2());
406 sigma[3] = TMath::Sqrt(par0->GetSigmaTgl2()+par1->GetSigmaTgl2());
407 sigma[4] = TMath::Sqrt(par0->GetSigma1Pt2()+par1->GetSigma1Pt2());
408 sigma[5] = sigma[4]*((par0->Pt()+par1->Pt())*0.5);
409 //
410 Bool_t isOK = kTRUE;
411 for (Int_t ivar=0;ivar<6;ivar++){
412 if (sigma[ivar]==0) isOK=kFALSE;
413 x[0]= delta[ivar]/sigma[ivar];
414 if (TMath::Abs(x[0])>kpullCut) isOK = kFALSE;
415 }
416 //
417
418 if (isOK) for (Int_t ivar=0;ivar<6;ivar++){
76c58ee2 419 x[0]= delta[ivar]; // Modifiation 10.10 use not normalized deltas
420 if (ivar==2 || ivar ==3) x[0]*=1000; // angles in radian
91fd44c9 421 fHistoDelta[ivar]->Fill(x);
422 if (sigma[ivar]>0){
423 x[0]= delta[ivar]/sigma[ivar];
424 fHistoPull[ivar]->Fill(x);
425 }
426 }
8a92e133 427
428 //
429 // Fill dedx performance
430 //
431 for (Int_t ipad=0; ipad<4;ipad++){
432 //
433 //
434 //
435 Int_t row0=0;
436 Int_t row1=160;
437 if (ipad==0) row1=63;
438 if (ipad==1) {row0=63; row1=63+64;}
439 if (ipad==2) {row0=128;}
440 Int_t nclUp = TMath::Nint(seed0->CookdEdxAnalytical(0.01,0.7,0,row0,row1,2));
441 Int_t nclDown = TMath::Nint(seed1->CookdEdxAnalytical(0.01,0.7,0,row0,row1,2));
442 Int_t minCl = TMath::Min(nclUp,nclDown);
443 if (minCl<kMinCldEdx) continue;
444 x[1] = minCl;
445 //
446 Float_t dEdxTotUp = seed0->CookdEdxAnalytical(0.01,0.7,0,row0,row1);
447 Float_t dEdxTotDown = seed1->CookdEdxAnalytical(0.01,0.7,0,row0,row1);
448 Float_t dEdxMaxUp = seed0->CookdEdxAnalytical(0.01,0.7,1,row0,row1);
449 Float_t dEdxMaxDown = seed1->CookdEdxAnalytical(0.01,0.7,1,row0,row1);
450 //
451 if (dEdxTotDown<=0) continue;
452 if (dEdxMaxDown<=0) continue;
453 x[0]=dEdxTotUp/dEdxTotDown;
454 fHistodEdxTot[ipad]->Fill(x);
455 x[0]=dEdxMaxUp/dEdxMaxDown;
456 fHistodEdxMax[ipad]->Fill(x);
457 }
458
459
91fd44c9 460
461}
462
236f5592 463void AliTPCcalibCosmic::FindPairs(const AliESDEvent *event){
9b27d39b 464 //
465 // Find cosmic pairs
04087794 466 //
467 // Track0 is choosen in upper TPC part
468 // Track1 is choosen in lower TPC part
9b27d39b 469 //
2acad464 470 if (GetDebugLevel()>20) printf("Hallo world: Im here\n");
76273318 471 AliESDfriend *esdFriend=static_cast<AliESDfriend*>(event->FindListObject("AliESDfriend"));
9b27d39b 472 Int_t ntracks=event->GetNumberOfTracks();
9b27d39b 473 TObjArray tpcSeeds(ntracks);
474 if (ntracks==0) return;
475 Double_t vtxx[3]={0,0,0};
476 Double_t svtxx[3]={0.000001,0.000001,100.};
477 AliESDVertex vtx(vtxx,svtxx);
478 //
479 //track loop
480 //
54b76c13 481 for (Int_t i=0;i<ntracks;++i) {
482 AliESDtrack *track = event->GetTrack(i);
483 fClusters->Fill(track->GetTPCNcls());
484
485 const AliExternalTrackParam * trackIn = track->GetInnerParam();
486 const AliExternalTrackParam * trackOut = track->GetOuterParam();
487 if (!trackIn) continue;
488 if (!trackOut) continue;
860b3d93 489 if (ntracks>4 && TMath::Abs(trackIn->GetTgl())<0.0015) continue; // filter laser
490
491
76273318 492 AliESDfriendTrack *friendTrack = esdFriend->GetTrack(i);
b9908d0b 493 if (!friendTrack) continue;
9b27d39b 494 TObject *calibObject;
b9908d0b 495 AliTPCseed *seed = 0;
9b27d39b 496 for (Int_t l=0;(calibObject=friendTrack->GetCalibObject(l));++l) {
497 if ((seed=dynamic_cast<AliTPCseed*>(calibObject))) break;
498 }
499 if (seed) tpcSeeds.AddAt(seed,i);
54b76c13 500
501 Double_t meanP = 0.5*(trackIn->GetP() + trackOut->GetP());
502 if (seed && track->GetTPCNcls() > 80 + 60/(1+TMath::Exp(-meanP+5))) {
15e48021 503 fDeDx->Fill(meanP, seed->CookdEdxNorm(0.0,0.45,0,0,159));
54b76c13 504 //
15e48021 505 if (meanP > 0.4 && meanP < 0.45) fDeDxMIP->Fill(seed->CookdEdxNorm(0.0,0.45,0,0,159));
54b76c13 506 //
82628455 507 // if (GetDebugLevel()>0&&meanP>0.2&&seed->CookdEdxNorm(0.0,0.45,0,0,159)>300) {
508// //TFile *curfile = AliAnalysisManager::GetAnalysisManager()->GetTree()->GetCurrentFile();
509// //if (curfile) printf(">>> p+ in file: %s \t event: %i \t Number of ESD tracks: %i \n", curfile->GetName(), (int)event->GetEventNumberInFile(), (int)ntracks);
510// // if (track->GetOuterParam()->GetAlpha()<0) cout << " Polartiy: " << track->GetSign() << endl;
511// }
54b76c13 512
513 }
514
9b27d39b 515 }
54b76c13 516
9b27d39b 517 if (ntracks<2) return;
518 //
519 // Find pairs
520 //
521 for (Int_t i=0;i<ntracks;++i) {
522 AliESDtrack *track0 = event->GetTrack(i);
04087794 523 // track0 - choosen upper part
524 if (!track0) continue;
525 if (!track0->GetOuterParam()) continue;
526 if (track0->GetOuterParam()->GetAlpha()<0) continue;
e9362f9d 527 Double_t dir0[3];
528 track0->GetDirection(dir0);
04087794 529 for (Int_t j=0;j<ntracks;++j) {
530 if (i==j) continue;
531 AliESDtrack *track1 = event->GetTrack(j);
532 //track 1 lower part
533 if (!track1) continue;
534 if (!track1->GetOuterParam()) continue;
535 if (track1->GetOuterParam()->GetAlpha()>0) continue;
536 //
e9362f9d 537 Double_t dir1[3];
538 track1->GetDirection(dir1);
54b76c13 539
9b27d39b 540 AliTPCseed * seed0 = (AliTPCseed*) tpcSeeds.At(i);
541 AliTPCseed * seed1 = (AliTPCseed*) tpcSeeds.At(j);
542 if (! seed0) continue;
543 if (! seed1) continue;
15e48021 544 Float_t dedx0 = seed0->CookdEdxNorm(0.05,0.55,0,0,159);
545 Float_t dedx1 = seed1->CookdEdxNorm(0.05,0.55,0,0,159);
bca20570 546 //
15e48021 547 Float_t dedx0I = seed0->CookdEdxNorm(0.05,0.55,0,0,63);
548 Float_t dedx1I = seed1->CookdEdxNorm(0.05,0.55,0,0,63);
bca20570 549 //
15e48021 550 Float_t dedx0O = seed0->CookdEdxNorm(0.05,0.55,0,64,159);
551 Float_t dedx1O = seed1->CookdEdxNorm(0.05,0.55,0,64,159);
bca20570 552 //
e9362f9d 553 Float_t dir = (dir0[0]*dir1[0] + dir0[1]*dir1[1] + dir0[2]*dir1[2]);
9b27d39b 554 Float_t d0 = track0->GetLinearD(0,0);
555 Float_t d1 = track1->GetLinearD(0,0);
556 //
557 // conservative cuts - convergence to be guarantied
558 // applying before track propagation
559 if (TMath::Abs(d0+d1)>fCutMaxD) continue; // distance to the 0,0
560 if (dir>fCutMinDir) continue; // direction vector product
561 Float_t bz = AliTracker::GetBz();
562 Float_t dvertex0[2]; //distance to 0,0
563 Float_t dvertex1[2]; //distance to 0,0
564 track0->GetDZ(0,0,0,bz,dvertex0);
565 track1->GetDZ(0,0,0,bz,dvertex1);
566 if (TMath::Abs(dvertex0[1])>250) continue;
567 if (TMath::Abs(dvertex1[1])>250) continue;
568 //
569 //
570 //
571 Float_t dmax = TMath::Max(TMath::Abs(d0),TMath::Abs(d1));
572 AliExternalTrackParam param0(*track0);
573 AliExternalTrackParam param1(*track1);
574 //
575 // Propagate using Magnetic field and correct fo material budget
576 //
a390f11f 577 Double_t sign0=-1;
578 Double_t sign1=1;
579 Double_t maxsnp=0.90;
9963b5e2 580 AliTracker::PropagateTrackToBxByBz(&param0,dmax+1,TDatabasePDG::Instance()->GetParticle("e-")->Mass(),3,kTRUE,maxsnp,sign0);
581 AliTracker::PropagateTrackToBxByBz(&param1,dmax+1,TDatabasePDG::Instance()->GetParticle("e-")->Mass(),3,kTRUE,maxsnp,sign1);
9b27d39b 582 //
583 // Propagate rest to the 0,0 DCA - z should be ignored
584 //
585 Bool_t b0 = param0.PropagateToDCA(&vtx,bz,1000);
586 Bool_t b1 = param1.PropagateToDCA(&vtx,bz,1000);
587 //
588 param0.GetDZ(0,0,0,bz,dvertex0);
589 param1.GetDZ(0,0,0,bz,dvertex1);
a6dc0cf6 590 if (TMath::Abs(param0.GetZ()-param1.GetZ())>fCutMaxDz) continue;
9b27d39b 591 //
592 Double_t xyz0[3];//,pxyz0[3];
593 Double_t xyz1[3];//,pxyz1[3];
594 param0.GetXYZ(xyz0);
595 param1.GetXYZ(xyz1);
596 Bool_t isPair = IsPair(&param0,&param1);
597 //
54b76c13 598 if (isPair) FillAcordeHist(track0);
76c58ee2 599 if (isPair &&param0.Pt()>1) {
600 const TString &trigger = event->GetFiredTriggerClasses();
601 UInt_t specie = event->GetEventSpecie();
602 printf("COSMIC ?\t%s\t%d\t%f\t%f\n", trigger.Data(),specie, param0.GetZ(), param1.GetZ());
603 }
15e48021 604 //
605 // combined track params
606 //
607 AliExternalTrackParam *par0U=MakeCombinedTrack(&param0,&param1);
608 AliExternalTrackParam *par1U=MakeCombinedTrack(&param1,&param0);
76c58ee2 609
54b76c13 610 //
9b27d39b 611 if (fStreamLevel>0){
612 TTreeSRedirector * cstream = GetDebugStreamer();
108953e9 613 //printf("My stream=%p\n",(void*)cstream);
e9362f9d 614 AliExternalTrackParam *ip0 = (AliExternalTrackParam *)track0->GetInnerParam();
615 AliExternalTrackParam *ip1 = (AliExternalTrackParam *)track1->GetInnerParam();
616 AliExternalTrackParam *op0 = (AliExternalTrackParam *)track0->GetOuterParam();
617 AliExternalTrackParam *op1 = (AliExternalTrackParam *)track1->GetOuterParam();
618 Bool_t isCrossI = ip0->GetZ()*ip1->GetZ()<0;
619 Bool_t isCrossO = op0->GetZ()*op1->GetZ()<0;
620 Double_t alpha0 = TMath::ATan2(dir0[1],dir0[0]);
621 Double_t alpha1 = TMath::ATan2(dir1[1],dir1[0]);
91fd44c9 622 //
623 //
624 //
76c58ee2 625 Int_t cross =0; // 0 no cross, 2 cross on both sides
626 if (isCrossI) cross+=1;
627 if (isCrossO) cross+=1;
628 FillHistoPerformance(&param0, &param1, ip0, ip1, seed0, seed1,par0U, cross);
9b27d39b 629 if (cstream) {
630 (*cstream) << "Track0" <<
108953e9 631 "run="<<fRun<< // run number
632 "event="<<fEvent<< // event number
633 "time="<<fTime<< // time stamp of event
634 "trigger="<<fTrigger<< // trigger
15e48021 635 "triggerClass="<<&fTriggerClass<< // trigger
108953e9 636 "mag="<<fMagF<< // magnetic field
9b27d39b 637 "dir="<<dir<< // direction
54b76c13 638 "OK="<<isPair<< // will be accepted
9b27d39b 639 "b0="<<b0<< // propagate status
640 "b1="<<b1<< // propagate status
e9362f9d 641 "crossI="<<isCrossI<< // cross inner
642 "crossO="<<isCrossO<< // cross outer
643 //
9b27d39b 644 "Orig0.=" << track0 << // original track 0
645 "Orig1.=" << track1 << // original track 1
646 "Tr0.="<<&param0<< // track propagated to the DCA 0,0
647 "Tr1.="<<&param1<< // track propagated to the DCA 0,0
e9362f9d 648 "Ip0.="<<ip0<< // inner param - upper
649 "Ip1.="<<ip1<< // inner param - lower
650 "Op0.="<<op0<< // outer param - upper
651 "Op1.="<<op1<< // outer param - lower
15e48021 652 "Up0.="<<par0U<< // combined track 0
653 "Up1.="<<par1U<< // combined track 1
e9362f9d 654 //
9b27d39b 655 "v00="<<dvertex0[0]<< // distance using kalman
656 "v01="<<dvertex0[1]<< //
657 "v10="<<dvertex1[0]<< //
658 "v11="<<dvertex1[1]<< //
659 "d0="<<d0<< // linear distance to 0,0
660 "d1="<<d1<< // linear distance to 0,0
661 //
e9362f9d 662 //
663 //
664 "x00="<<xyz0[0]<< // global position close to vertex
9b27d39b 665 "x01="<<xyz0[1]<<
666 "x02="<<xyz0[2]<<
667 //
e9362f9d 668 "x10="<<xyz1[0]<< // global position close to vertex
9b27d39b 669 "x11="<<xyz1[1]<<
670 "x12="<<xyz1[2]<<
671 //
e9362f9d 672 "alpha0="<<alpha0<<
673 "alpha1="<<alpha1<<
674 "dir00="<<dir0[0]<< // direction upper
675 "dir01="<<dir0[1]<<
676 "dir02="<<dir0[2]<<
677 //
678 "dir10="<<dir1[0]<< // direction lower
679 "dir11="<<dir1[1]<<
680 "dir12="<<dir1[2]<<
681 //
682 //
54b76c13 683 "Seed0.=" << seed0 << // original seed 0
684 "Seed1.=" << seed1 << // original seed 1
bca20570 685 //
686 "dedx0="<<dedx0<< // dedx0 - all
687 "dedx1="<<dedx1<< // dedx1 - all
688 //
54b76c13 689 "dedx0I="<<dedx0I<< // dedx0 - inner ROC
690 "dedx1I="<<dedx1I<< // dedx1 - inner ROC
bca20570 691 //
54b76c13 692 "dedx0O="<<dedx0O<< // dedx0 - outer ROC
693 "dedx1O="<<dedx1O<< // dedx1 - outer ROC
9b27d39b 694 "\n";
695 }
15e48021 696 }
697 delete par0U;
698 delete par1U;
9b27d39b 699 }
700 }
701}
702
9b27d39b 703
bca20570 704
705
54b76c13 706void AliTPCcalibCosmic::FillAcordeHist(AliESDtrack *upperTrack) {
707
708 // Pt cut to select straight tracks which can be easily propagated to ACORDE which is outside the magnetic field
709 if (upperTrack->Pt() < 10 || upperTrack->GetTPCNcls() < 80) return;
710
76273318 711 const Double_t acordePlane = 850.; // distance of the central Acorde detectors to the beam line at y =0
54b76c13 712 const Double_t roof = 210.5; // distance from x =0 to end of magnet roof
713
714 Double_t r[3];
715 upperTrack->GetXYZ(r);
716 Double_t d[3];
717 upperTrack->GetDirection(d);
718 Double_t x,z;
76273318 719 z = r[2] + (d[2]/d[1])*(acordePlane - r[1]);
720 x = r[0] + (d[0]/d[1])*(acordePlane - r[1]);
54b76c13 721
722 if (x > roof) {
76273318 723 x = r[0] + (d[0]/(d[0]+d[1]))*(acordePlane+roof-r[0]-r[1]);
724 z = r[2] + (d[2]/(d[0]+d[1]))*(acordePlane+roof-r[0]-r[1]);
54b76c13 725 }
726 if (x < -roof) {
76273318 727 x = r[0] + (d[0]/(d[1]-d[0]))*(acordePlane+roof+r[0]-r[1]);
728 z = r[2] + (d[2]/(d[1]-d[0]))*(acordePlane+roof+r[0]-r[1]);
54b76c13 729 }
730
731 fModules->Fill(z, x);
732
733}
734
735
736
3326b323 737Long64_t AliTPCcalibCosmic::Merge(TCollection *const li) {
236f5592 738 //
739 // component merging
740 //
bca20570 741
742 TIterator* iter = li->MakeIterator();
743 AliTPCcalibCosmic* cal = 0;
744
745 while ((cal = (AliTPCcalibCosmic*)iter->Next())) {
746 if (!cal->InheritsFrom(AliTPCcalibCosmic::Class())) {
860b3d93 747 //Error("Merge","Attempt to add object of class %s to a %s", cal->ClassName(), this->ClassName());
bca20570 748 return -1;
749 }
750
54b76c13 751 fHistNTracks->Add(cal->GetHistNTracks());
752 fClusters->Add(cal-> GetHistClusters());
753 fModules->Add(cal->GetHistAcorde());
754 fHistPt->Add(cal->GetHistPt());
755 fDeDx->Add(cal->GetHistDeDx());
756 fDeDxMIP->Add(cal->GetHistMIP());
91fd44c9 757 Add(cal);
bca20570 758 }
bca20570 759 return 0;
9b27d39b 760
f7f33dec 761}
762
54b76c13 763
236f5592 764Bool_t AliTPCcalibCosmic::IsPair(AliExternalTrackParam *tr0, AliExternalTrackParam *tr1) const{
9b27d39b 765 //
766 //
767 /*
768 // 0. Same direction - OPOSITE - cutDir +cutT
769 TCut cutDir("cutDir","dir<-0.99")
770 // 1.
771 TCut cutT("cutT","abs(Tr1.fP[3]+Tr0.fP[3])<0.03")
772 //
773 // 2. The same rphi
774 TCut cutD("cutD","abs(Tr0.fP[0]+Tr1.fP[0])<5")
775 //
776 //
777 //
778 TCut cutPt("cutPt","abs(Tr1.fP[4]+Tr0.fP[4])<1&&abs(Tr0.fP[4])+abs(Tr1.fP[4])<10");
779 // 1/Pt diff cut
780 */
781 const Double_t *p0 = tr0->GetParameter();
782 const Double_t *p1 = tr1->GetParameter();
783 if (TMath::Abs(p0[3]+p1[3])>fCutTheta) return kFALSE;
a6dc0cf6 784 if (TMath::Abs(p0[1]-p1[1])>fCutMaxDz) return kFALSE;
9b27d39b 785 if (TMath::Abs(p0[0]+p1[0])>fCutMaxD) return kFALSE;
a6dc0cf6 786
9b27d39b 787 Double_t d0[3], d1[3];
788 tr0->GetDirection(d0);
789 tr1->GetDirection(d1);
790 if (d0[0]*d1[0] + d0[1]*d1[1] + d0[2]*d1[2] >fCutMinDir) return kFALSE;
791 //
792 return kTRUE;
793}
54b76c13 794
795
796
797Double_t AliTPCcalibCosmic::CalculateMIPvalue(TH1F * hist) {
236f5592 798 //
799 // Calculate the MIP value - gaussian fit used
800 //
54b76c13 801
802 TF1 * funcDoubleGaus = new TF1("funcDoubleGaus", "gaus(0)+gaus(3)",0,1000);
803 funcDoubleGaus->SetParameters(hist->GetEntries()*0.75,hist->GetMean()/1.3,hist->GetMean()*0.10,
804 hist->GetEntries()*0.25,hist->GetMean()*1.3,hist->GetMean()*0.10);
805 hist->Fit(funcDoubleGaus);
3326b323 806 Double_t aMIPvalue = TMath::Min(funcDoubleGaus->GetParameter(1),funcDoubleGaus->GetParameter(4));
54b76c13 807
808 delete funcDoubleGaus;
809
3326b323 810 return aMIPvalue;
54b76c13 811
812}
9b27d39b 813
814
f7f33dec 815
54b76c13 816
57dc06f2 817void AliTPCcalibCosmic::CalculateBetheParams(TH2F */*hist*/, Double_t * /*initialParam*/) {
818 //
819 // Not implemented yet
820 //
54b76c13 821 return;
822
823}
824
825
3326b323 826void AliTPCcalibCosmic::BinLogX(THnSparse *const h, Int_t axisDim) {
91fd44c9 827
828 // Method for the correct logarithmic binning of histograms
829
830 TAxis *axis = h->GetAxis(axisDim);
831 int bins = axis->GetNbins();
832
833 Double_t from = axis->GetXmin();
834 Double_t to = axis->GetXmax();
3326b323 835 Double_t *newBins = new Double_t[bins + 1];
91fd44c9 836
3326b323 837 newBins[0] = from;
91fd44c9 838 Double_t factor = pow(to/from, 1./bins);
839
840 for (int i = 1; i <= bins; i++) {
3326b323 841 newBins[i] = factor * newBins[i-1];
91fd44c9 842 }
3326b323 843 axis->Set(bins, newBins);
4ce766eb 844 delete [] newBins;
91fd44c9 845
846}
847
848
3326b323 849void AliTPCcalibCosmic::BinLogX(TH1 *const h) {
f7f33dec 850
851 // Method for the correct logarithmic binning of histograms
852
853 TAxis *axis = h->GetXaxis();
854 int bins = axis->GetNbins();
855
856 Double_t from = axis->GetXmin();
857 Double_t to = axis->GetXmax();
3326b323 858 Double_t *newBins = new Double_t[bins + 1];
f7f33dec 859
3326b323 860 newBins[0] = from;
f7f33dec 861 Double_t factor = pow(to/from, 1./bins);
862
863 for (int i = 1; i <= bins; i++) {
3326b323 864 newBins[i] = factor * newBins[i-1];
f7f33dec 865 }
3326b323 866 axis->Set(bins, newBins);
4ce766eb 867 delete [] newBins;
f7f33dec 868
869}
870
7b18d067 871
860b3d93 872AliExternalTrackParam *AliTPCcalibCosmic::MakeTrack(const AliExternalTrackParam *track0, const AliExternalTrackParam *track1){
873 //
236f5592 874 // Make a atrack using the kalman update of track0 and track1
860b3d93 875 //
876 AliExternalTrackParam *par1R= new AliExternalTrackParam(*track1);
877 par1R->Rotate(track0->GetAlpha());
15e48021 878 par1R->PropagateTo(track0->GetX(),AliTracker::GetBz());
860b3d93 879 //
880 //
881 Double_t * param = (Double_t*)par1R->GetParameter();
882 Double_t * covar = (Double_t*)par1R->GetCovariance();
15e48021 883
860b3d93 884 param[0]*=1; //OK
885 param[1]*=1; //OK
886 param[2]*=1; //?
887 param[3]*=-1; //OK
888 param[4]*=-1; //OK
889 //
890 covar[6] *=-1.; covar[7] *=-1.; covar[8] *=-1.;
891 //covar[10]*=-1.; covar[11]*=-1.; covar[12]*=-1.;
892 covar[13]*=-1.;
860b3d93 893 return par1R;
894}
895
15e48021 896AliExternalTrackParam *AliTPCcalibCosmic::MakeCombinedTrack(const AliExternalTrackParam *track0, const AliExternalTrackParam *track1){
897 //
898 // Make combined track
899 //
900 //
901 AliExternalTrackParam * par1T = MakeTrack(track0,track1);
902 AliExternalTrackParam * par0U = new AliExternalTrackParam(*track0);
903 //
904 UpdateTrack(*par0U,*par1T);
905 delete par1T;
906 return par0U;
907}
908
909
860b3d93 910void AliTPCcalibCosmic::UpdateTrack(AliExternalTrackParam &track1, const AliExternalTrackParam &track2){
911 //
912 // Update track 1 with track 2
913 //
914 //
915 //
916 TMatrixD vecXk(5,1); // X vector
917 TMatrixD covXk(5,5); // X covariance
918 TMatrixD matHk(5,5); // vector to mesurement
919 TMatrixD measR(5,5); // measurement error
920 TMatrixD vecZk(5,1); // measurement
921 //
922 TMatrixD vecYk(5,1); // Innovation or measurement residual
923 TMatrixD matHkT(5,5);
924 TMatrixD matSk(5,5); // Innovation (or residual) covariance
925 TMatrixD matKk(5,5); // Optimal Kalman gain
926 TMatrixD mat1(5,5); // update covariance matrix
927 TMatrixD covXk2(5,5); //
928 TMatrixD covOut(5,5);
929 //
930 Double_t *param1=(Double_t*) track1.GetParameter();
931 Double_t *covar1=(Double_t*) track1.GetCovariance();
932 Double_t *param2=(Double_t*) track2.GetParameter();
933 Double_t *covar2=(Double_t*) track2.GetCovariance();
934 //
935 // copy data to the matrix
936 for (Int_t ipar=0; ipar<5; ipar++){
860b3d93 937 for (Int_t jpar=0; jpar<5; jpar++){
938 covXk(ipar,jpar) = covar1[track1.GetIndex(ipar, jpar)];
939 measR(ipar,jpar) = covar2[track2.GetIndex(ipar, jpar)];
15e48021 940 matHk(ipar,jpar)=0;
941 mat1(ipar,jpar)=0;
860b3d93 942 }
15e48021 943 vecXk(ipar,0) = param1[ipar];
944 vecZk(ipar,0) = param2[ipar];
945 matHk(ipar,ipar)=1;
946 mat1(ipar,ipar)=0;
860b3d93 947 }
948 //
949 //
950 //
951 //
860b3d93 952 //
953 vecYk = vecZk-matHk*vecXk; // Innovation or measurement residual
954 matHkT=matHk.T(); matHk.T();
955 matSk = (matHk*(covXk*matHkT))+measR; // Innovation (or residual) covariance
956 matSk.Invert();
957 matKk = (covXk*matHkT)*matSk; // Optimal Kalman gain
958 vecXk += matKk*vecYk; // updated vector
860b3d93 959 covXk2 = (mat1-(matKk*matHk));
960 covOut = covXk2*covXk;
961 //
962 //
963 //
964 // copy from matrix to parameters
965 if (0) {
966 vecXk.Print();
967 vecZk.Print();
968 //
969 measR.Print();
970 covXk.Print();
971 covOut.Print();
972 //
973 track1.Print();
974 track2.Print();
975 }
976
977 for (Int_t ipar=0; ipar<5; ipar++){
978 param1[ipar]= vecXk(ipar,0) ;
979 for (Int_t jpar=0; jpar<5; jpar++){
980 covar1[track1.GetIndex(ipar, jpar)]=covOut(ipar,jpar);
981 }
982 }
983}
984
860b3d93 985
986
236f5592 987void AliTPCcalibCosmic::FindCosmicPairs(const AliESDEvent * event) {
76c58ee2 988 //
989 // find cosmic pairs trigger by random trigger
990 //
991 //
992 AliESDVertex *vertexSPD = (AliESDVertex *)event->GetPrimaryVertexSPD();
993 AliESDVertex *vertexTPC = (AliESDVertex *)event->GetPrimaryVertexTPC();
994 AliESDfriend *esdFriend=static_cast<AliESDfriend*>(event->FindListObject("AliESDfriend"));
995 const Double_t kMinPt=1;
996 const Double_t kMinPtMax=0.8;
997 const Double_t kMinNcl=50;
998 const Double_t kMaxDelta[5]={2,600,0.02,0.02,0.1};
999 Int_t ntracks=event->GetNumberOfTracks();
5b129619 1000 // Float_t dcaTPC[2]={0,0};
1001 // Float_t covTPC[3]={0,0,0};
76c58ee2 1002
1003 UInt_t specie = event->GetEventSpecie(); // skip laser events
1004 if (specie==AliRecoParam::kCalib) return;
1005
1006
1007
1008 for (Int_t itrack0=0;itrack0<ntracks;itrack0++) {
1009 AliESDtrack *track0 = event->GetTrack(itrack0);
1010 if (!track0) continue;
1011 if (!track0->IsOn(AliESDtrack::kTPCrefit)) continue;
1012
1013 if (TMath::Abs(AliTracker::GetBz())>1&&track0->Pt()<kMinPt) continue;
1014 if (track0->GetTPCncls()<kMinNcl) continue;
1015 if (TMath::Abs(track0->GetY())<kMaxDelta[0]) continue;
1016 if (track0->GetKinkIndex(0)>0) continue;
1017 const Double_t * par0=track0->GetParameter(); //track param at rhe DCA
1018 //rm primaries
1019 //
1020 //track0->GetImpactParametersTPC(dcaTPC,covTPC);
1021 //if (TMath::Abs(dcaTPC[0])<kMaxDelta[0]) continue;
1022 //if (TMath::Abs(dcaTPC[1])<kMaxDelta[0]*2) continue;
5b129619 1023 // const AliExternalTrackParam * trackIn0 = track0->GetInnerParam();
76c58ee2 1024 for (Int_t itrack1=itrack0+1;itrack1<ntracks;itrack1++) {
1025 AliESDtrack *track1 = event->GetTrack(itrack1);
1026 if (!track1) continue;
1027 if (!track1->IsOn(AliESDtrack::kTPCrefit)) continue;
1028 if (track1->GetKinkIndex(0)>0) continue;
1029 if (TMath::Abs(AliTracker::GetBz())>1&&track1->Pt()<kMinPt) continue;
1030 if (track1->GetTPCncls()<kMinNcl) continue;
1031 if (TMath::Abs(AliTracker::GetBz())>1&&TMath::Max(track1->Pt(), track0->Pt())<kMinPtMax) continue;
1032 if (TMath::Abs(track1->GetY())<kMaxDelta[0]) continue;
1033 //track1->GetImpactParametersTPC(dcaTPC,covTPC);
1034 // if (TMath::Abs(dcaTPC[0])<kMaxDelta[0]) continue;
1035 //if (TMath::Abs(dcaTPC[1])<kMaxDelta[0]*2) continue;
1036 //
1037 const Double_t* par1=track1->GetParameter(); //track param at rhe DCA
1038 //
1039 Bool_t isPair=kTRUE;
1040 for (Int_t ipar=0; ipar<5; ipar++){
1041 if (ipar==4&&TMath::Abs(AliTracker::GetBz())<1) continue; // 1/pt not defined for B field off
1042 if (TMath::Abs(TMath::Abs(par0[ipar])-TMath::Abs(par1[ipar]))>kMaxDelta[ipar]) isPair=kFALSE;
1043 }
1044 if (!isPair) continue;
1045 if (TMath::Abs(TMath::Abs(track0->GetAlpha()-track1->GetAlpha())-TMath::Pi())>kMaxDelta[2]) isPair=kFALSE;
1046 //delta with correct sign
1047 /*
1048 TCut cut0="abs(t1.fP[0]+t0.fP[0])<2"
1049 TCut cut3="abs(t1.fP[3]+t0.fP[3])<0.02"
1050 TCut cut4="abs(t1.fP[4]+t0.fP[4])<0.2"
1051 */
1052 if (TMath::Abs(par0[0]+par1[0])>kMaxDelta[0]) isPair=kFALSE; //delta y opposite sign
1053 if (TMath::Abs(par0[3]+par1[3])>kMaxDelta[3]) isPair=kFALSE; //delta tgl opposite sign
1054 if (TMath::Abs(AliTracker::GetBz())>1 && TMath::Abs(par0[4]+par1[4])>kMaxDelta[4]) isPair=kFALSE; //delta 1/pt opposite sign
1055 if (!isPair) continue;
d0c09227 1056 TString filename(AliAnalysisManager::GetAnalysisManager()->GetTree()->GetCurrentFile()->GetName());
1057 Int_t eventNumber = event->GetEventNumberInFile();
1058 Bool_t hasFriend=(esdFriend) ? (esdFriend->GetTrack(itrack0)!=0):0;
1059 Bool_t hasITS=(track0->GetNcls(0)+track1->GetNcls(0)>4);
1060 printf("DUMPHPTCosmic:%s|%f|%d|%d|%d\n",filename.Data(),(TMath::Min(track0->Pt(),track1->Pt())), eventNumber,hasFriend,hasITS);
1061
1062
5b129619 1063 // const AliExternalTrackParam * trackIn1 = track1->GetInnerParam();
76c58ee2 1064 //
1065 //
1066 TTreeSRedirector * pcstream = GetDebugStreamer();
1067 Int_t ntracksSPD = vertexSPD->GetNContributors();
1068 Int_t ntracksTPC = vertexTPC->GetNContributors();
1069 //
1070 AliESDfriendTrack *friendTrack0 = esdFriend->GetTrack(itrack0);
1071 if (!friendTrack0) continue;
1072 AliESDfriendTrack *friendTrack1 = esdFriend->GetTrack(itrack1);
1073 if (!friendTrack1) continue;
1074 TObject *calibObject;
1075 AliTPCseed *seed0 = 0;
1076 AliTPCseed *seed1 = 0;
1077 //
1078 for (Int_t l=0;(calibObject=friendTrack0->GetCalibObject(l));++l) {
1079 if ((seed0=dynamic_cast<AliTPCseed*>(calibObject))) break;
1080 }
1081 for (Int_t l=0;(calibObject=friendTrack1->GetCalibObject(l));++l) {
1082 if ((seed1=dynamic_cast<AliTPCseed*>(calibObject))) break;
1083 }
1084 //
1085 if (pcstream){
1086 (*pcstream)<<"pairs"<<
1087 "run="<<fRun<< // run number
1088 "event="<<fEvent<< // event number
1089 "time="<<fTime<< // time stamp of event
1090 "trigger="<<fTrigger<< // trigger
1091 "triggerClass="<<&fTriggerClass<< // trigger
1092 "mag="<<fMagF<< // magnetic field
1093 //
1094 "nSPD="<<ntracksSPD<<
1095 "nTPC="<<ntracksTPC<<
1096 "vSPD.="<<vertexSPD<< //primary vertex -SPD
1097 "vTPC.="<<vertexTPC<< //primary vertex -TPC
1098 "t0.="<<track0<< //track0
1099 "t1.="<<track1<< //track1
1100 "ft0.="<<friendTrack0<< //track0
1101 "ft1.="<<friendTrack1<< //track1
1102 "s0.="<<seed0<< //track0
1103 "s1.="<<seed1<< //track1
1104 "\n";
1105 }
1106 if (!fCosmicTree) {
1107 fCosmicTree = new TTree("pairs","pairs");
1108 fCosmicTree->SetDirectory(0);
1109 }
1110 if (fCosmicTree->GetEntries()==0){
1111 //
1112 fCosmicTree->SetDirectory(0);
1113 fCosmicTree->Branch("t0.",&track0);
1114 fCosmicTree->Branch("t1.",&track1);
1115 fCosmicTree->Branch("ft0.",&friendTrack0);
1116 fCosmicTree->Branch("ft1.",&friendTrack1);
1117 }else{
1118 fCosmicTree->SetBranchAddress("t0.",&track0);
1119 fCosmicTree->SetBranchAddress("t1.",&track1);
1120 fCosmicTree->SetBranchAddress("ft0.",&friendTrack0);
1121 fCosmicTree->SetBranchAddress("ft1.",&friendTrack1);
1122 }
1123 fCosmicTree->Fill();
1124 }
1125 }
1126}
1127
1128
1129void AliTPCcalibCosmic::Terminate(){
1130 //
1131 // copy the cosmic tree to memory resident tree
1132 //
1133 static Int_t counter=0;
1134 printf("AliTPCcalibCosmic::Terminate\t%d\n",counter);
1135 counter++;
1136 AliTPCcalibBase::Terminate();
1137}
1138
860b3d93 1139
76c58ee2 1140void AliTPCcalibCosmic::AddTree(TTree* treeOutput, TTree * treeInput){
1141 //
1142 // Add the content of tree:
1143 // Notice automatic copy of tree in ROOT does not work for such complicated tree
1144 //
d0c09227 1145 return;
1146 //if (TMath::Abs(fMagF)<0.1) return; // work around - otherwise crashes
76c58ee2 1147 AliESDtrack *track0=new AliESDtrack;
1148 AliESDtrack *track1=new AliESDtrack;
1149 AliESDfriendTrack *ftrack0=new AliESDfriendTrack;
1150 AliESDfriendTrack *ftrack1=new AliESDfriendTrack;
1151 treeInput->SetBranchAddress("t0.",&track0);
1152 treeInput->SetBranchAddress("t1.",&track1);
1153 treeInput->SetBranchAddress("ft0.",&ftrack0);
1154 treeInput->SetBranchAddress("ft1.",&ftrack1);
d0c09227 1155 treeOutput->SetDirectory(0);
1156 //
76c58ee2 1157 Int_t entries= treeInput->GetEntries();
d0c09227 1158 Int_t step=1+Int_t(TMath::Log(1+treeOutput->GetEntries()/10.));
1159 for (Int_t i=0; i<entries; i+=step){
1160 treeInput->SetBranchAddress("t0.",&track0);
1161 treeInput->SetBranchAddress("t1.",&track1);
1162 treeInput->SetBranchAddress("ft0.",&ftrack0);
1163 treeInput->SetBranchAddress("ft1.",&ftrack1);
76c58ee2 1164 treeInput->GetEntry(i);
d0c09227 1165 if (!track0) continue;
1166 if (!track1) continue;
1167 if (!ftrack0) continue;
1168 if (!ftrack1) continue;
1169 if (track0->GetTPCncls()<=0) continue;
1170 if (track1->GetTPCncls()<=0) continue;
1171 if (!track0->GetInnerParam()) continue;
1172 if (!track1->GetInnerParam()) continue;
1173 if (!track0->GetTPCInnerParam()) continue;
1174 if (!track1->GetTPCInnerParam()) continue;
1175 //track0
1176 treeOutput->SetBranchAddress("t0.",&track0);
1177 treeOutput->SetBranchAddress("t1.",&track1);
1178 treeOutput->SetBranchAddress("ft0.",&ftrack0);
1179 treeOutput->SetBranchAddress("ft1.",&ftrack1);
76c58ee2 1180 treeOutput->Fill();
d0c09227 1181 delete track0;
1182 delete track1;
1183 delete ftrack0;
1184 delete ftrack1;
1185 track0=0;
1186 track1=0;
1187 ftrack0=0;
1188 ftrack1=0;
76c58ee2 1189 }
1190}
1191
1192
1193
1194void AliTPCcalibCosmic::MakeFitTree(TTree * treeInput, TTreeSRedirector *pcstream, const TObjArray * corrArray, Int_t step, Int_t run){
1195 //
1196 // Make fit tree
1197 // refit the tracks with original points + corrected points for each correction
1198 // Input:
1199 // treeInput - tree with cosmic tracks
1200 // pcstream - debug output
1201
1202 // Algorithm:
1203 // Loop over pair of cosmic tracks:
1204 // 1. Find trigger offset between cosmic event and "physic" trigger
1205 // 2. Refit tracks with current transformation
1206 // 3. Refit tracks using additional "primitive" distortion on top
1207 // Best correction estimated as linear combination of corrections
1208 // minimizing the observed distortions
1209 // Observed distortions - matching in the y,z, snp, theta and 1/pt
1210 //
1211 const Double_t kResetCov=20.;
1212 const Double_t kMaxDelta[5]={1,40,0.03,0.01,0.2};
1213 const Double_t kSigma=2.;
1214 const Double_t kMaxTime=1050;
1215 const Double_t kMaxSnp=0.8;
1216 Int_t ncorr=corrArray->GetEntries();
1217 AliTPCTransform *transform = AliTPCcalibDB::Instance()->GetTransform() ;
1218 AliTPCParam *param = AliTPCcalibDB::Instance()->GetParameters();
1219 AliGRPObject* grp = AliTPCcalibDB::Instance()->GetGRP(run);
1220 Double_t time=0.5*(grp->GetTimeStart() +grp->GetTimeEnd());
1221 transform->SetCurrentRun(run);
5b129619 1222 transform->SetCurrentTimeStamp(TMath::Nint(time));
76c58ee2 1223 Double_t covar[15];
1224 for (Int_t i=0;i<15;i++) covar[i]=0;
1225 covar[0]=kSigma*kSigma;
1226 covar[2]=kSigma*kSigma;
1227 covar[5]=kSigma*kSigma/Float_t(150*150);
1228 covar[9]=kSigma*kSigma/Float_t(150*150);
1229 covar[14]=0.2*0.2;
1230 Double_t *distortions = new Double_t[ncorr+1];
1231
1232 AliESDtrack *track0=new AliESDtrack;
1233 AliESDtrack *track1=new AliESDtrack;
1234 AliESDfriendTrack *ftrack0=new AliESDfriendTrack;
1235 AliESDfriendTrack *ftrack1=new AliESDfriendTrack;
1236 treeInput->SetBranchAddress("t0.",&track0);
1237 treeInput->SetBranchAddress("t1.",&track1);
1238 treeInput->SetBranchAddress("ft0.",&ftrack0);
1239 treeInput->SetBranchAddress("ft1.",&ftrack1);
1240 Int_t entries= treeInput->GetEntries();
1241 for (Int_t i=0; i<entries; i+=step){
1242 treeInput->GetEntry(i);
1243 if (i%20==0) printf("%d\n",i);
1244 if (!ftrack0->GetTPCOut()) continue;
1245 if (!ftrack1->GetTPCOut()) continue;
1246 AliTPCseed *seed0=0;
1247 AliTPCseed *seed1=0;
1248 TObject *calibObject;
1249 for (Int_t l=0;(calibObject=ftrack0->GetCalibObject(l));++l) {
1250 if ((seed0=dynamic_cast<AliTPCseed*>(calibObject))) break;
1251 }
1252 for (Int_t l=0;(calibObject=ftrack1->GetCalibObject(l));++l) {
1253 if ((seed1=dynamic_cast<AliTPCseed*>(calibObject))) break;
1254 }
1255 if (!seed0) continue;
1256 if (!seed1) continue;
1257 if (TMath::Abs(seed0->GetSnp())>kMaxSnp) continue;
1258 if (TMath::Abs(seed1->GetSnp())>kMaxSnp) continue;
1259 //
1260 //
1261 Int_t nclA0=0, nclC0=0; // number of clusters
1262 Int_t nclA1=0, nclC1=0; // number of clusters
1263 Int_t ncl0=0,ncl1=0;
1264 Double_t rmin0=300, rmax0=-300; // variables to estimate the time0 - trigger offset
1265 Double_t rmin1=300, rmax1=-300;
1266 Double_t tmin0=2000, tmax0=-2000;
1267 Double_t tmin1=2000, tmax1=-2000;
1268 //
1269 //
1270 // calculate trigger offset usig "missing clusters"
1271 for (Int_t irow=0; irow<159; irow++){
1272 AliTPCclusterMI *cluster0=seed0->GetClusterPointer(irow);
1273 if (cluster0 &&cluster0->GetX()>10){
1274 if (cluster0->GetX()<rmin0) { rmin0=cluster0->GetX(); tmin0=cluster0->GetTimeBin();}
1275 if (cluster0->GetX()>rmax0) { rmax0=cluster0->GetX(); tmax0=cluster0->GetTimeBin();}
1276 ncl0++;
1277 if (cluster0->GetDetector()%36<18) nclA0++;
1278 if (cluster0->GetDetector()%36>=18) nclC0++;
1279 }
1280 AliTPCclusterMI *cluster1=seed1->GetClusterPointer(irow);
1281 if (cluster1&&cluster1->GetX()>10){
1282 if (cluster1->GetX()<rmin1) { rmin1=cluster1->GetX(); tmin1=cluster1->GetTimeBin();}
1283 if (cluster1->GetX()>rmax1) { rmax1=cluster1->GetX(); tmax1=cluster1->GetTimeBin();}
1284 ncl1++;
1285 if (cluster1->GetDetector()%36<18) nclA1++;
1286 if (cluster1->GetDetector()%36>=18) nclC1++;
1287 }
1288 }
1289 Int_t cosmicType=0; // types of cosmic topology
1290 if ((nclA0>nclC0) && (nclA1>nclC1)) cosmicType=0; // AA side
1291 if ((nclA0<nclC0) && (nclA1<nclC1)) cosmicType=1; // CC side
1292 if ((nclA0>nclC0) && (nclA1<nclC1)) cosmicType=2; // AC side
1293 if ((nclA0<nclC0) && (nclA1>nclC1)) cosmicType=3; // CA side
1294 //if ((nclA0>nclC0) && (nclA1<nclC1)) cosmicType=6; // AC side out of time
1295 //if ((nclA0>nclC0) && (nclA1<nclC1)) cosmicType=7; // CA side out of time
1296 //
1297 Double_t deltaTime = 0; // correction for trigger not in time - equalizing the time arival
1298 if ((cosmicType>1)&&TMath::Abs(track1->GetZ()-track0->GetZ())>4){
1299 cosmicType+=4;
1300 deltaTime=0.5*(track1->GetZ()-track0->GetZ())/param->GetZWidth();
1301 if (nclA0>nclC0) deltaTime*=-1; // if A side track
1302 }
1303 //
1304 TVectorD vectorDT(8);
1305 Int_t crossCounter=0;
1306 Double_t deltaTimeCross = AliTPCcalibCosmic::GetDeltaTime(rmin0, rmax0, rmin1, rmax1, tmin0, tmax0, tmin1, tmax1, TMath::Abs(track0->GetY()),vectorDT);
1307 Bool_t isOKTrigger=kTRUE;
1308 for (Int_t ic=0; ic<6;ic++) {
1309 if (TMath::Abs(vectorDT[ic])>0) {
1310 if (vectorDT[ic]+vectorDT[6]<0) isOKTrigger=kFALSE;
1311 if (vectorDT[ic]+vectorDT[7]>kMaxTime) isOKTrigger=kFALSE;
1312 if (isOKTrigger){
1313 crossCounter++;
1314 }
1315 }
1316 }
1317 Double_t deltaTimeCluster=deltaTime;
1318 if ((cosmicType==0 || cosmicType==1) && crossCounter>0){
1319 deltaTimeCluster=deltaTimeCross;
1320 cosmicType+=8;
1321 }
1322 if (nclA0*nclC0>0 || nclA1*nclC1>0) cosmicType+=16; // mixed A side C side - bad for visualization
1323 //
1324 // Apply current transformation
1325 //
1326 //
1327 for (Int_t irow=0; irow<159; irow++){
1328 AliTPCclusterMI *cluster0=seed0->GetClusterPointer(irow);
1329 if (cluster0 &&cluster0->GetX()>10){
1330 Double_t x0[3]={cluster0->GetRow(),cluster0->GetPad(),cluster0->GetTimeBin()+deltaTimeCluster};
1331 Int_t index0[1]={cluster0->GetDetector()};
1332 transform->Transform(x0,index0,0,1);
1333 cluster0->SetX(x0[0]);
1334 cluster0->SetY(x0[1]);
1335 cluster0->SetZ(x0[2]);
1336 //
1337 }
1338 AliTPCclusterMI *cluster1=seed1->GetClusterPointer(irow);
1339 if (cluster1&&cluster1->GetX()>10){
1340 Double_t x1[3]={cluster1->GetRow(),cluster1->GetPad(),cluster1->GetTimeBin()+deltaTimeCluster};
1341 Int_t index1[1]={cluster1->GetDetector()};
1342 transform->Transform(x1,index1,0,1);
1343 cluster1->SetX(x1[0]);
1344 cluster1->SetY(x1[1]);
1345 cluster1->SetZ(x1[2]);
1346 }
1347 }
1348 //
1349 //
1350 Double_t alpha=track0->GetAlpha(); // rotation frame
1351 Double_t cos = TMath::Cos(alpha);
1352 Double_t sin = TMath::Sin(alpha);
1353 Double_t mass = TDatabasePDG::Instance()->GetParticle("mu+")->Mass();
1354 AliExternalTrackParam btrack0=*(ftrack0->GetTPCOut());
1355 AliExternalTrackParam btrack1=*(ftrack1->GetTPCOut());
1356 btrack0.Rotate(alpha);
1357 btrack1.Rotate(alpha);
1358 // change the sign for track 1
1359 Double_t* par1=(Double_t*)btrack0.GetParameter();
1360 par1[3]*=-1;
1361 par1[4]*=-1;
1362 btrack0.AddCovariance(covar);
1363 btrack1.AddCovariance(covar);
1364 btrack0.ResetCovariance(kResetCov);
1365 btrack1.ResetCovariance(kResetCov);
1366 Bool_t isOK=kTRUE;
1367 Bool_t isOKT=kTRUE;
1368 TObjArray tracks0(ncorr+1);
1369 TObjArray tracks1(ncorr+1);
1370 //
1371 Double_t dEdx0Tot=seed0->CookdEdxAnalytical(0.02,0.6,kTRUE);
1372 Double_t dEdx1Tot=seed1->CookdEdxAnalytical(0.02,0.6,kTRUE);
1373 Double_t dEdx0Max=seed0->CookdEdxAnalytical(0.02,0.6,kFALSE);
1374 Double_t dEdx1Max=seed1->CookdEdxAnalytical(0.02,0.6,kFALSE);
1375 //if (TMath::Abs((dEdx0Max+1)/(dEdx0Tot+1)-1.)>0.1) isOK=kFALSE;
1376 //if (TMath::Abs((dEdx1Max+1)/(dEdx1Tot+1)-1.)>0.1) isOK=kFALSE;
1377 ncl0=0; ncl1=0;
1378 for (Int_t icorr=-1; icorr<ncorr; icorr++){
1379 AliExternalTrackParam rtrack0=btrack0;
1380 AliExternalTrackParam rtrack1=btrack1;
1381 AliTPCCorrection *corr = 0;
1382 if (icorr>=0) corr = (AliTPCCorrection*)corrArray->At(icorr);
1383 //
1384 for (Int_t irow=159; irow>0; irow--){
1385 AliTPCclusterMI *cluster=seed0->GetClusterPointer(irow);
1386 if (!cluster) continue;
1387 if (!isOKT) break;
1388 Double_t rD[3]={cluster->GetX(),cluster->GetY(),cluster->GetZ()};
1389 transform->RotatedGlobal2Global(cluster->GetDetector()%36,rD); // transform to global
1390 Float_t r[3]={rD[0],rD[1],rD[2]};
1391 if (corr){
1392 corr->DistortPoint(r, cluster->GetDetector());
1393 }
1394 //
1395 Double_t cov[3]={0.01,0.,0.01};
1396 Double_t lx =cos*r[0]+sin*r[1];
1397 Double_t ly =-sin*r[0]+cos*r[1];
1398 rD[1]=ly; rD[0]=lx; rD[2]=r[2]; //transform to track local
1399 if (!AliTracker::PropagateTrackToBxByBz(&rtrack0, lx,mass,1.,kFALSE)) isOKT=kFALSE;;
1400 if (!rtrack0.Update(&rD[1],cov)) isOKT =kFALSE;
1401 if (icorr<0) ncl0++;
1402 }
1403 //
1404 for (Int_t irow=159; irow>0; irow--){
1405 AliTPCclusterMI *cluster=seed1->GetClusterPointer(irow);
1406 if (!cluster) continue;
1407 if (!isOKT) break;
1408 Double_t rD[3]={cluster->GetX(),cluster->GetY(),cluster->GetZ()};
1409 transform->RotatedGlobal2Global(cluster->GetDetector()%36,rD);
1410 Float_t r[3]={rD[0],rD[1],rD[2]};
1411 if (corr){
1412 corr->DistortPoint(r, cluster->GetDetector());
1413 }
1414 //
1415 Double_t cov[3]={0.01,0.,0.01};
1416 Double_t lx =cos*r[0]+sin*r[1];
1417 Double_t ly =-sin*r[0]+cos*r[1];
1418 rD[1]=ly; rD[0]=lx; rD[2]=r[2];
1419 if (!AliTracker::PropagateTrackToBxByBz(&rtrack1, lx,mass,1.,kFALSE)) isOKT=kFALSE;
1420 if (!rtrack1.Update(&rD[1],cov)) isOKT=kFALSE;
1421 if (icorr<0) ncl1++;
1422 }
1423 if (!AliTracker::PropagateTrackToBxByBz(&rtrack0, 0,mass,10.,kFALSE)) isOKT=kFALSE;
1424 if (!AliTracker::PropagateTrackToBxByBz(&rtrack1, 0,mass,10.,kFALSE)) isOKT=kFALSE;
1425 if (!AliTracker::PropagateTrackToBxByBz(&rtrack0, 0,mass,1.,kFALSE)) isOKT=kFALSE;
1426 if (!AliTracker::PropagateTrackToBxByBz(&rtrack1, 0,mass,1.,kFALSE)) isOKT=kFALSE;
1427 const Double_t *param0=rtrack0.GetParameter();
1428 const Double_t *param1=rtrack1.GetParameter();
1429 for (Int_t ipar=0; ipar<4; ipar++){
1430 if (TMath::Abs(param1[ipar]-param0[ipar])>kMaxDelta[ipar]) isOK=kFALSE;
1431 }
1432 tracks0.AddAt(rtrack0.Clone(), icorr+1);
1433 tracks1.AddAt(rtrack1.Clone(), icorr+1);
1434 AliExternalTrackParam out0=*(ftrack0->GetTPCOut());
1435 AliExternalTrackParam out1=*(ftrack1->GetTPCOut());
1436 Int_t nentries=TMath::Min(ncl0,ncl1);
1437
1438 if (icorr<0) {
1439 (*pcstream)<<"cosmic"<<
1440 "isOK="<<isOK<< // correct all propagation update and also residuals
1441 "isOKT="<<isOKT<< // correct all propagation update
1442 "isOKTrigger="<<isOKTrigger<< // correct? estimate of trigger offset
1443 "id="<<cosmicType<<
1444 //
1445 //
1446 "cross="<<crossCounter<<
1447 "vDT.="<<&vectorDT<<
1448 //
1449 "dTime="<<deltaTime<< // delta time using the A-c side cross
1450 "dTimeCross="<<deltaTimeCross<< // delta time using missing clusters
1451 //
1452 "dEdx0Max="<<dEdx0Max<<
1453 "dEdx0Tot="<<dEdx0Tot<<
1454 "dEdx1Max="<<dEdx1Max<<
1455 "dEdx1Tot="<<dEdx1Tot<<
1456 //
1457 "track0.="<<track0<< // original track 0
1458 "track1.="<<track1<< // original track 1
1459 "out0.="<<&out0<< // outer track 0
1460 "out1.="<<&out1<< // outer track 1
1461 "rtrack0.="<<&rtrack0<< // refitted track with current transform
1462 "rtrack1.="<<&rtrack1<< //
1463 "ncl0="<<ncl0<<
1464 "ncl1="<<ncl1<<
1465 "entries="<<nentries<< // number of clusters
1466 "\n";
1467 }
1468 }
1469 //
1470
1471 if (isOK){
1472 Int_t nentries=TMath::Min(ncl0,ncl1);
1473 for (Int_t ipar=0; ipar<5; ipar++){
1474 for (Int_t icorr=-1; icorr<ncorr; icorr++){
1475 AliTPCCorrection *corr = 0;
1476 if (icorr>=0) corr = (AliTPCCorrection*)corrArray->At(icorr);
1477 //
1478 AliExternalTrackParam *param0=(AliExternalTrackParam *) tracks0.At(icorr+1);
1479 AliExternalTrackParam *param1=(AliExternalTrackParam *) tracks1.At(icorr+1);
1480 distortions[icorr+1]=param1->GetParameter()[ipar]-param0->GetParameter()[ipar];
1481 if (icorr>=0){
1482 distortions[icorr+1]-=distortions[0];
1483 }
1484 //
1485 if (icorr<0){
1486 Double_t bz=AliTrackerBase::GetBz();
1487 Double_t gxyz[3];
1488 param0->GetXYZ(gxyz);
1489 Int_t dtype=20;
1490 Double_t theta=param0->GetParameter()[3];
1491 Double_t phi = alpha;
1492 Double_t snp = track0->GetInnerParam()->GetSnp();
1493 Double_t mean= distortions[0];
1494 Int_t index = param0->GetIndex(ipar,ipar);
1495 Double_t rms=TMath::Sqrt(param1->GetCovariance()[index]+param1->GetCovariance()[index]);
1496 if (crossCounter<1) rms*=1;
1497 Double_t sector=9*phi/TMath::Pi();
1498 Double_t dsec = sector-TMath::Nint(sector+0.5);
1499 Double_t gx=gxyz[0],gy=gxyz[1],gz=gxyz[2];
1500 Double_t refX=TMath::Sqrt(gx*gx+gy*gy);
1501 Double_t dRrec=0;
1502 // Double_t pt=(param0->GetSigned1Pt()+param1->GetSigned1Pt())*0.5;
1503 Double_t pt=(param0->GetSigned1Pt()+param1->GetSigned1Pt())*0.5;
1504
1505 (*pcstream)<<"fit"<< // dump valus for fit
1506 "run="<<run<< //run number
1507 "bz="<<bz<< // magnetic filed used
1508 "dtype="<<dtype<< // detector match type 20
1509 "ptype="<<ipar<< // parameter type
1510 "theta="<<theta<< // theta
1511 "phi="<<phi<< // phi
1512 "snp="<<snp<< // snp
1513 "mean="<<mean<< // mean dist value
1514 "rms="<<rms<< // rms
1515 "sector="<<sector<<
1516 "dsec="<<dsec<<
1517 //
1518 "refX="<<refX<< // reference radius
1519 "gx="<<gx<< // global position
1520 "gy="<<gy<< // global position
1521 "gz="<<gz<< // global position
1522 "dRrec="<<dRrec<< // delta Radius in reconstruction
1523 "pt="<<pt<< //1/pt
1524 "id="<<cosmicType<< //type of the cosmic used
1525 "entries="<<nentries;// number of entries in bin
1526 (*pcstream)<<"cosmicDebug"<<
1527 "p0.="<<param0<< // dump distorted track 0
1528 "p1.="<<param1; // dump distorted track 1
1529 }
1530 if (icorr>=0){
1531 (*pcstream)<<"fit"<<
1532 Form("%s=",corr->GetName())<<distortions[icorr+1]; // dump correction value
1533 (*pcstream)<<"cosmicDebug"<<
1534 Form("%s=",corr->GetName())<<distortions[icorr+1]<< // dump correction value
1535 Form("%sp0.=",corr->GetName())<<param0<< // dump distorted track 0
1536 Form("%sp1.=",corr->GetName())<<param1; // dump distorted track 1
1537 }
1538 } //loop corrections
1539 (*pcstream)<<"fit"<<"isOK="<<isOK<<"\n";
1540 (*pcstream)<<"cosmicDebug"<<"isOK="<<isOK<<"\n";
1541 } //loop over parameters
1542 } // dump results
1543 }//loop tracks
0bc13e06 1544 delete [] distortions;
76c58ee2 1545}
1546
1547
1548
1549Double_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)
1550{
1551 //
1552 // Estimate trigger offset between random cosmic event and "physics" trigger
1553 // Efficiency about 50 % of cases:
1554 // Cases:
1555 // 0. Tracks crossing A side and C side - no match in z - 30 % of cases
1556 // 1. Track only on one side and dissapear at small or at high radiuses - 50 % of cases
1557 // 1.a) rmax<Rc && tmax<Tcmax && tmax>tmin => deltaT=Tcmax-tmax
1558 // 1.b) rmin>Rcmin && tmin<Tcmax && tmin>tmax => deltaT=Tcmax-tmin
1559 // // case the z matching gives proper time
1560 // 1.c) rmax<Rc && tmax>Tcmin && tmax<tmin => deltaT=-tmax
1561 //
1562 // check algorithm:
1563 // TCut cutStop = "(min(rmax0,rmax1)<235||abs(rmin0-rmin1)>10)"; // tracks not registered for full time
1564
1565 // Combinations:
1566 // 0-1 - forbidden
1567 // 0-2 - forbidden
1568 // 0-3 - occur - wrong correlation
1569 // 1-2 - occur - wrong correlation
1570 // 1-3 - forbidden
1571 // 2-3 - occur - small number of outlyers -20%
1572 // Frequency:
1573 // 0 - 106
1574 // 1 - 265
1575 // 2 - 206
1576 // 3 - 367
1577 //
1578 const Double_t kMaxRCut=235; // max radius
1579 const Double_t kMinRCut=TMath::Max(dcaR,90.); // min radius
1580 const Double_t kMaxDCut=30; // max distance for minimal radius
1581 const Double_t kMinTime=110;
1582 const Double_t kMaxTime=950;
1583 Double_t deltaT=0;
1584 Int_t counter=0;
1585 vectorDT[6]=TMath::Min(TMath::Min(tmin0,tmin1),TMath::Min(tmax0,tmax1));
1586 vectorDT[7]=TMath::Max(TMath::Max(tmin0,tmin1),TMath::Max(tmax0,tmax1));
1587 if (TMath::Min(rmax0,rmax1)<kMaxRCut){
1588 // max cross - deltaT>0
1589 if (rmax0<kMaxRCut && tmax0 <kMaxTime && tmax0>tmin0) vectorDT[0]=kMaxTime-tmax0; // disapear at CE
1590 if (rmax1<kMaxRCut && tmax1 <kMaxTime && tmax1>tmin1) vectorDT[1]=kMaxTime-tmax1; // disapear at CE
1591 // min cross - deltaT<0 - OK they are correlated
1592 if (rmax0<kMaxRCut && tmax0 >kMinTime && tmax0<tmin0) vectorDT[2]=-tmax0; // disapear at ROC
1593 if (rmax1<kMaxRCut && tmax1 >kMinTime && tmax1<tmin1) vectorDT[3]=-tmax1; // disapear at ROC
1594 }
1595 if (rmin0> kMinRCut+kMaxDCut && tmin0 <kMaxTime && tmin0>tmax0) vectorDT[4]=kMaxTime-tmin0;
1596 if (rmin1> kMinRCut+kMaxDCut && tmin1 <kMaxTime && tmin1>tmax1) vectorDT[5]=kMaxTime-tmin1;
1597 Bool_t isOK=kTRUE;
1598 for (Int_t i=0; i<6;i++) {
1599 if (TMath::Abs(vectorDT[i])>0) {
1600 counter++;
1601 if (vectorDT[i]+vectorDT[6]<0) isOK=kFALSE;
1602 if (vectorDT[i]+vectorDT[7]>kMaxTime) isOK=kFALSE;
1603 if (isOK) deltaT=vectorDT[i];
1604 }
1605 }
1606 return deltaT;
1607}
d0c09227 1608