1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
16 ////////////////////////////////////////////////////////////////////////////
19 // Gain calibration using tracks
22 // 1.) Inner TPC gain alignement - (parabolic) parameterization (inside of one sector)
23 // 2.) Angular and z-position correction (parabolic) parameterization
24 // 3.) Sector gain alignment
26 // Following histograms are accumulated
27 // a.) Simple 1D histograms per chamber
28 // b.) Profile histograms per chamber - local x dependence
29 // c.) 2D Profile histograms - local x - fi dependence
31 // To get the gain map - the simple solution - use the histograms - is not enough
32 // The resulting mean amplitude map depends strongly on the track topology
33 // These dependence can be reduced, taking into account angular effect, and diffusion effect
34 // Using proper fit modeles
39 // === Calibration class for gain calibration using tracks ===
43 // A 6-parametric parabolic function
45 // G(x, y) = p0 + p1*x + p2*y + p3*x^2 + p4*y^2 + p5 * x*y
47 // is fitted to the maximum charge values or total charge values of
48 // all the clusters contained in the tracks that are added to this
49 // object. This fit is performed for each read out chamber, in fact even
50 // for each type of pad sizes (thus for one segment, which consists of
51 // an IROC and an OROC, there are three fitters used, corresponding to
52 // the three pad sizes). The coordinate origin is at the center of the
53 // particular pad size region on each ROC.
55 // Because of the Landau nature of the charge deposition we use
56 // different "types" of fitters instead of one to minimize the effect
57 // of the long Landau tail. The difference between the fitters is only
58 // the charge value, that is put into them, i.e. the charge is subject
59 // to a transformation. At this point we use three different fit types:
61 // a) simple: the charge is put in as it is
62 // b) sqrt: the square root of the charge is put into the fitter
63 // c) log: fgkM * Log(1+q/fgkM) is put into the fitter, with
64 // q being the untransformed charge and fgkM=25
66 // The results of the fits may be visualized and further used by
67 // creating an AliTPCCalROC or AliTPCCalPad. You may specify to undo
68 // the transformation and/or to normalize to the pad size.
70 // Not every track you add to this object is actually used for
71 // calibration. There are some cuts and conditions to exclude bad
72 // tracks, e.g. a pt cut to cut out tracks with too much charge
73 // deposition or a cut on edge clusters which are not fully
74 // registered and don't give a usable signal.
76 // 2) Interface / usage
77 // ====================
78 // For each track to be added you need to call Process().
79 // This method expects an AliTPCseed, which contains the necessary
80 // cluster information. At the moment of writing this information
81 // is stored in an AliESDfriend corresponding to an AliESD.
82 // You may also call AddTrack() if you don't want the cuts and
83 // other quality conditions to kick in (thus forcing the object to
84 // accept the track) or AddCluster() for adding single clusters.
85 // Call one of the Evaluate functions to evaluate the fitter(s) and
86 // to retrieve the fit parameters, erros and so on. You can also
87 // do this later on by using the different Getters.
89 // The visualization methods CreateFitCalPad() and CreateFitCalROC()
90 // are straight forward to use.
92 // Note: If you plan to write this object to a ROOT file, make sure
93 // you evaluate all the fitters *before* writing, because due
94 // to a bug in the fitter component writing fitters doesn't
95 // work properly (yet). Be aware that you cannot re-evaluate
96 // the fitters after loading this object from file.
97 // (This will be gone for a new ROOT version > v5-17-05)
99 ////////////////////////////////////////////////////////////////////////////
101 #include <TPDGCode.h>
104 #include "TMatrixD.h"
105 #include "TTreeStream.h"
107 #include "AliTPCParamSR.h"
108 #include "AliTPCClusterParam.h"
109 #include "AliTrackPointArray.h"
111 #include "AliTPCcalibTracksGain.h"
114 #include <TLinearFitter.h>
115 #include <TTreeStream.h>
117 #include <TCollection.h>
118 #include <TIterator.h>
124 #include "AliMathBase.h"
126 #include "AliTPCROC.h"
127 #include "AliTPCParamSR.h"
128 #include "AliTPCCalROC.h"
129 #include "AliTPCCalPad.h"
130 #include "AliTPCClusterParam.h"
132 #include "AliTracker.h"
134 #include "AliESDtrack.h"
135 #include "AliESDfriend.h"
136 #include "AliESDfriendTrack.h"
137 #include "AliTPCseed.h"
138 #include "AliTPCclusterMI.h"
139 #include "AliTPCcalibTracksCuts.h"
140 #include "AliTPCFitPad.h"
142 // REMOVE ALL OF THIS
144 #include "AliESDEvent.h"
148 TFile f("TPCCalibTracksGain.root")
150 gSystem->Load("libPWG1.so")
156 TString * str = comp.FitPlane("Cl.fQ/dedxQ.fElements[0]","Cl.fY++Cl.fX","Cl.fDetector<36",chi2,vec,mat)
160 ClassImp(AliTPCcalibTracksGain)
162 const Bool_t AliTPCcalibTracksGain::fgkUseTotalCharge = kTRUE;
163 const Double_t AliTPCcalibTracksGain::fgkM = 25.;
164 const char* AliTPCcalibTracksGain::fgkDebugStreamFileName = "TPCCalibTracksGain.root";
165 AliTPCParamSR* AliTPCcalibTracksGain::fgTPCparam = new AliTPCParamSR();
167 AliTPCcalibTracksGain::AliTPCcalibTracksGain() :
169 fDebugStream(0), //! debug stream for debugging
170 fCuts(0), // cuts that are used for sieving the tracks used for calibration
172 // Simple Array of histograms
174 fArrayQM(0), // Qmax normalized
175 fArrayQT(0), // Qtot normalized
176 fProfileArrayQM(0), // Qmax normalized versus local X
177 fProfileArrayQT(0), // Qtot normalized versus local X
178 fProfileArrayQM2D(0), // Qmax normalized versus local X and phi
179 fProfileArrayQT2D(0), // Qtot normalized versus local X and phi
183 fSimpleFitter(0), // simple fitter for short pads
184 fSqrtFitter(0), // sqrt fitter for medium pads
185 fLogFitter(0), // log fitter for long pads
186 fFitter0M(0), // fitting of the atenuation, angular correction, and mean chamber gain
187 fFitter1M(0), // fitting of the atenuation, angular correction, and mean chamber gain
188 fFitter2M(0), // fitting of the atenuation, angular correction, and mean chamber gain
189 fFitter0T(0), // fitting of the atenuation, angular correction, and mean chamber gain
190 fFitter1T(0), // fitting of the atenuation, angular correction, and mean chamber gain
191 fFitter2T(0), // fitting of the atenuation, angular correction, and mean chamber gain
192 fSingleSectorFitter(0), // just for debugging
196 fTotalTracks(0), // just for debugging
197 fAcceptedTracks(0), // just for debugging
198 fDebugCalPadRaw(0), // just for debugging
199 fDebugCalPadCorr(0), // just for debugging
200 fPrevIter(0) // the calibration object in its previous iteration (will not be owned by the new object, don't forget to delete it!)
204 // Default constructor.
208 AliTPCcalibTracksGain::AliTPCcalibTracksGain(const AliTPCcalibTracksGain& obj) :
209 AliTPCcalibBase(obj),
210 fDebugStream(0), //! debug stream for debugging
211 fCuts(obj.fCuts), // cuts that are used for sieving the tracks used for calibration
212 fArrayQM(0), // Qmax normalized
213 fArrayQT(0), // Qtot normalized
217 fProfileArrayQM(obj.fProfileArrayQM), // Qmax normalized versus local X
218 fProfileArrayQT(obj.fProfileArrayQT), // Qtot normalized versus local X
219 fProfileArrayQM2D(obj.fProfileArrayQM2D), // Qmax normalized versus local X and phi
220 fProfileArrayQT2D(obj.fProfileArrayQT2D), // Qtot normalized versus local X and phi
224 fSimpleFitter(obj.fSimpleFitter), // simple fitter for short pads
225 fSqrtFitter(obj.fSqrtFitter), // sqrt fitter for medium pads
226 fLogFitter(obj.fLogFitter), // log fitter for long pads
227 fFitter0M(obj.fFitter0M),
228 fFitter1M(obj.fFitter1M),
229 fFitter2M(obj.fFitter2M),
230 fFitter0T(obj.fFitter0T),
231 fFitter1T(obj.fFitter1T),
232 fFitter2T(obj.fFitter2T),
233 fSingleSectorFitter(obj.fSingleSectorFitter), // just for debugging
237 fTotalTracks(obj.fTotalTracks), // just for debugging
238 fAcceptedTracks(obj.fAcceptedTracks), // just for debugging
239 fDebugCalPadRaw(obj.fDebugCalPadRaw), // just for debugging
240 fDebugCalPadCorr(obj.fDebugCalPadCorr), // just for debugging
241 fPrevIter(obj.fPrevIter) // the calibration object in its previous iteration (will not be owned by the new object, don't forget to delete it!)
249 AliTPCcalibTracksGain& AliTPCcalibTracksGain::operator=(const AliTPCcalibTracksGain& rhs) {
251 // Assignment operator.
255 TNamed::operator=(rhs);
256 fDebugCalPadRaw = new AliTPCCalPad(*(rhs.fDebugCalPadRaw));
257 fDebugCalPadCorr = new AliTPCCalPad(*(rhs.fDebugCalPadCorr));
258 fSimpleFitter = new AliTPCFitPad(*(rhs.fSimpleFitter));
259 fSqrtFitter = new AliTPCFitPad(*(rhs.fSqrtFitter));
260 fLogFitter = new AliTPCFitPad(*(rhs.fLogFitter));
261 fSingleSectorFitter = new AliTPCFitPad(*(rhs.fSingleSectorFitter));
262 fPrevIter = new AliTPCcalibTracksGain(*(rhs.fPrevIter));
263 fCuts = new AliTPCcalibTracksCuts(*(rhs.fCuts));
268 AliTPCcalibTracksGain::AliTPCcalibTracksGain(const char* name, const char* title, AliTPCcalibTracksCuts* cuts, TNamed* /*debugStreamPrefix*/, AliTPCcalibTracksGain* prevIter) :
270 fDebugStream(0), //! debug stream for debugging
271 fCuts(0), // cuts that are used for sieving the tracks used for calibration
272 fArrayQM(0), // Qmax normalized
273 fArrayQT(0), // Qtot normalized
277 fProfileArrayQM(0), // Qmax normalized versus local X
278 fProfileArrayQT(0), // Qtot normalized versus local X
279 fProfileArrayQM2D(0), // Qmax normalized versus local X and phi
280 fProfileArrayQT2D(0), // Qtot normalized versus local X and phi
284 fSimpleFitter(0), // simple fitter for short pads
285 fSqrtFitter(0), // sqrt fitter for medium pads
286 fLogFitter(0), // log fitter for long pads
287 fFitter0M(0), // fitting of the atenuation, angular correction, and mean chamber gain
288 fFitter1M(0), // fitting of the atenuation, angular correction, and mean chamber gain
289 fFitter2M(0), // fitting of the atenuation, angular correction, and mean chamber gain
290 fFitter0T(0), // fitting of the atenuation, angular correction, and mean chamber gain
291 fFitter1T(0), // fitting of the atenuation, angular correction, and mean chamber gain
292 fFitter2T(0), // fitting of the atenuation, angular correction, and mean chamber gain
293 fSingleSectorFitter(0), // just for debugging
297 fTotalTracks(0), // just for debugging
298 fAcceptedTracks(0), // just for debugging
299 fDebugCalPadRaw(0), // just for debugging
300 fDebugCalPadCorr(0), // just for debugging
301 fPrevIter(0) // the calibration object in its previous iteration (will not be owned by the new object, don't forget to delete it!)
307 G__SetCatchException(0);
308 this->SetNameTitle(name, title);
310 fPrevIter = prevIter;
312 // Fitter initialization
314 fSimpleFitter = new AliTPCFitPad(8, "hyp7", "");
315 fSqrtFitter = new AliTPCFitPad(8, "hyp7", "");
316 fLogFitter = new AliTPCFitPad(8, "hyp7", "");
317 fSingleSectorFitter = new AliTPCFitPad(8, "hyp7", "");
319 fFitter0M = new TLinearFitter(45,"hyp44");
320 fFitter1M = new TLinearFitter(45,"hyp44");
321 fFitter2M = new TLinearFitter(45,"hyp44");
322 fFitter0T = new TLinearFitter(45,"hyp44");
323 fFitter1T = new TLinearFitter(45,"hyp44");
324 fFitter2T = new TLinearFitter(45,"hyp44");
327 // Add profile histograms -JUST for visualization - Not used for real calibration
330 fArrayQM=new TObjArray(73); // Qmax normalized
331 fArrayQT=new TObjArray(73); // Qtot normalized
332 fProfileArrayQM = new TObjArray(37); // Qmax normalized versus local X
333 fProfileArrayQT = new TObjArray(37); // Qtot normalized versus local X
334 fProfileArrayQM2D = new TObjArray(37); // Qmax normalized versus local X and phi
335 fProfileArrayQT2D = new TObjArray(37); // Qtot normalized versus local X and phi
337 for (Int_t i=0; i<73; i++){
338 sprintf(hname,"QM_%d",i);
339 fArrayQM->AddAt(new TH1F(hname,hname,200,0,1000),i);
340 sprintf(hname,"QT_%d",i);
341 fArrayQT->AddAt(new TH1F(hname,hname,200,0,1000),i);
344 for (Int_t i=0; i<37;i++){
345 sprintf(hname,"QMvsx_%d",i);
346 fProfileArrayQM->AddAt(new TProfile(hname,hname,50,89,250),i);
347 sprintf(hname,"QTvsx_%d",i);
348 fProfileArrayQT->AddAt(new TProfile(hname,hname,50,89,250),i);
349 sprintf(hname,"QM2D_%d",i);
350 fProfileArrayQM2D->AddAt(new TProfile2D(hname,hname,50,89,250,10,-0.15,0.15),i);
351 sprintf(hname,"QT2D_%d",i);
352 fProfileArrayQT2D->AddAt(new TProfile2D(hname,hname,50,89,250,10,-0.15,0.15),i);
355 // just for debugging -counters
359 fDebugCalPadRaw = new AliTPCCalPad("DebugCalPadRaw", "All clusters simply added up before correction");
360 fDebugCalPadCorr = new AliTPCCalPad("DebugCalPadCorr", "All clusters simply added up after correction");
361 // this will be gone for the a new ROOT version > v5-17-05
362 for (UInt_t i = 0; i < 36; i++) {
363 fNShortClusters[i] = 0;
364 fNMediumClusters[i] = 0;
365 fNLongClusters[i] = 0;
369 AliTPCcalibTracksGain::~AliTPCcalibTracksGain() {
374 Info("Destructor","");
375 if (fSimpleFitter) delete fSimpleFitter;
376 if (fSqrtFitter) delete fSqrtFitter;
377 if (fLogFitter) delete fLogFitter;
378 if (fSingleSectorFitter) delete fSingleSectorFitter;
382 //fDebugStream->GetFile()->Close();
383 printf("Deleting debug stream object\n");
388 if (fDebugCalPadRaw) delete fDebugCalPadRaw;
389 if (fDebugCalPadCorr) delete fDebugCalPadCorr;
392 void AliTPCcalibTracksGain::Terminate(){
394 // Evaluate fitters and close the debug stream.
395 // Also move or copy the debug stream, if a debugStreamPrefix is provided.
407 void AliTPCcalibTracksGain::Process(AliTPCseed* seed) {
409 // Main method to be called when a new seed is supposed to be processed
410 // and be used for gain calibration. Its quality is checked before it
415 if (!fCuts->AcceptTrack(seed)) return;
420 Long64_t AliTPCcalibTracksGain::Merge(TCollection *list) {
422 // Merge() merges the results of all AliTPCcalibTracksGain objects contained in
423 // list, thus allowing a distributed computation of several files, e.g. on PROOF.
424 // The merged results are merged with the data members of the AliTPCcalibTracksGain
425 // object used for calling the Merge method.
426 // The return value is 0 /*the total number of tracks used for calibration*/ if the merge
427 // is successful, otherwise it is -1.
430 if (!list || list->IsEmpty()) return -1;
432 if (!fSimpleFitter) fSimpleFitter = new AliTPCFitPad(8, "hyp7", "");
433 if (!fSqrtFitter) fSqrtFitter = new AliTPCFitPad(8, "hyp7", "");
434 if (!fLogFitter) fLogFitter = new AliTPCFitPad(8, "hyp7", "");
435 if (!fSingleSectorFitter) fSingleSectorFitter = new AliTPCFitPad(8, "hyp7", "");
438 // just for debugging
439 if (!fDebugCalPadRaw) fDebugCalPadRaw = new AliTPCCalPad("DebugCalPadRaw", "All clusters simply added up before correction");
440 if (!fDebugCalPadCorr) fDebugCalPadCorr = new AliTPCCalPad("DebugCalPadCorr", "All clusters simply added up after correction");
442 TIterator* iter = list->MakeIterator();
443 AliTPCcalibTracksGain* cal = 0;
445 while ((cal = (AliTPCcalibTracksGain*)iter->Next())) {
446 if (!cal->InheritsFrom(AliTPCcalibTracksGain::Class())) {
447 Error("Merge","Attempt to add object of class %s to a %s", cal->ClassName(), this->ClassName());
456 void AliTPCcalibTracksGain::Add(AliTPCcalibTracksGain* cal) {
458 // Adds another AliTPCcalibTracksGain object to this object.
461 fSimpleFitter->Add(cal->fSimpleFitter);
462 fSqrtFitter->Add(cal->fSqrtFitter);
463 fLogFitter->Add(cal->fLogFitter);
464 fSingleSectorFitter->Add(cal->fSingleSectorFitter);
468 fFitter0M->Add(cal->fFitter0M);
469 fFitter1M->Add(cal->fFitter1M);
470 fFitter2M->Add(cal->fFitter2M);
471 fFitter0T->Add(cal->fFitter0T);
472 fFitter1T->Add(cal->fFitter1T);
473 fFitter2T->Add(cal->fFitter2T);
478 for (Int_t i=0; i<73; i++){
480 his = (TH1F*)fArrayQM->At(i);
481 hism = (TH1F*)cal->fArrayQM->At(i);
482 if (his && hism) his->Add(hism);
483 his = (TH1F*)fArrayQT->At(i);
484 hism = (TH1F*)cal->fArrayQT->At(i);
485 if (his && hism) his->Add(hism);
489 for (Int_t i=0; i<37; i++){
491 his = (TProfile*)fProfileArrayQM->At(i);
492 hism = (TProfile*)cal->fProfileArrayQM->At(i);
493 if (his && hism) his->Add(hism);
494 his = (TProfile*)fProfileArrayQT->At(i);
495 hism = (TProfile*)cal->fProfileArrayQT->At(i);
496 if (his && hism) his->Add(hism);
500 for (Int_t i=0; i<37; i++){
501 TProfile2D *his,*hism;
502 his = (TProfile2D*)fProfileArrayQM2D->At(i);
503 hism = (TProfile2D*)cal->fProfileArrayQM2D->At(i);
504 if (his && hism) his->Add(hism);
505 his = (TProfile2D*)fProfileArrayQT2D->At(i);
506 hism = (TProfile2D*)cal->fProfileArrayQT2D->At(i);
507 if (his && hism) his->Add(hism);
510 // this will be gone for the a new ROOT version > v5-17-05
511 for (UInt_t iSegment = 0; iSegment < 36; iSegment++) {
512 fNShortClusters[iSegment] += cal->fNShortClusters[iSegment];
513 fNMediumClusters[iSegment] += cal->fNMediumClusters[iSegment];
514 fNLongClusters[iSegment] += cal->fNLongClusters[iSegment];
517 // just for debugging, remove me
518 fTotalTracks += cal->fTotalTracks;
519 fAcceptedTracks += cal->fAcceptedTracks;
520 fDebugCalPadRaw->Add(cal->fDebugCalPadRaw);
521 fDebugCalPadCorr->Add(cal->fDebugCalPadCorr);
525 void AliTPCcalibTracksGain::AddTrack(AliTPCseed* seed) {
527 // The clusters making up the track (seed) are added to various fit functions.
528 // See AddCluster(...) for more detail.
531 if (!fDebugStream) fDebugStream = new TTreeSRedirector(fgkDebugStreamFileName);
534 // simple histograming part
535 for (Int_t i=0; i<159; i++){
536 AliTPCclusterMI* cluster = seed->GetClusterPointer(i);
537 if (cluster) AddCluster(cluster);
541 void AliTPCcalibTracksGain::AddCluster(AliTPCclusterMI* cluster){
543 // Adding cluster information to the simple histograms
544 // No correction, fittings are applied
546 Float_t kThreshold=5;
547 if (cluster->GetX()<=0) return;
548 if (cluster->GetQ()<=kThreshold) return;
552 Int_t sector = cluster->GetDetector();
555 if (his) his->Fill(cluster->GetQ());
557 if (his) his->Fill(cluster->GetQ());
559 if (his) his->Fill(cluster->GetMax());
561 if (his) his->Fill(cluster->GetMax());
565 prof = GetProfileQT(sector);
566 if (prof) prof->Fill(cluster->GetX(),cluster->GetQ());
567 prof = GetProfileQT(-1);
568 if (prof) prof->Fill(cluster->GetX(),cluster->GetQ());
569 prof = GetProfileQM(sector);
570 if (prof) prof->Fill(cluster->GetX(),cluster->GetMax());
571 prof = GetProfileQM(-1);
572 if (prof) prof->Fill(cluster->GetX(),cluster->GetMax());
574 Float_t phi = cluster->GetY()/cluster->GetX();
576 prof2 = GetProfileQT2D(sector);
577 if (prof2) prof2->Fill(cluster->GetX(),phi,cluster->GetQ());
578 prof2 = GetProfileQT2D(-1);
579 if (prof2) prof2->Fill(cluster->GetX(),phi,cluster->GetQ());
580 prof2 = GetProfileQM2D(sector);
581 if (prof2) prof2->Fill(cluster->GetX(),phi,cluster->GetMax());
582 prof2 = GetProfileQM2D(-1);
583 if (prof2) prof2->Fill(cluster->GetX(),phi,cluster->GetMax());
590 void AliTPCcalibTracksGain::AddCluster(AliTPCclusterMI* cluster, Float_t /*momenta*/, Float_t/* mdedx*/, Int_t padType,
591 Float_t xcenter, TVectorD& dedxQ, TVectorD& /*dedxM*/, Float_t /*fraction*/, Float_t fraction2, Float_t dedge,
592 TVectorD& /*parY*/, TVectorD& /*parZ*/, TVectorD& meanPos) {
594 // Adds cluster to the appropriate fitter for later analysis.
595 // The charge used for the fit is the maximum charge for this specific cluster or the
596 // accumulated charge per cluster, depending on the value of fgkUseTotalCharge.
597 // Depending on the pad size where the cluster is registered, the value will be put in
598 // the appropriate fitter. Furthermore, for each pad size three different types of fitters
599 // are used. The fit functions are the same for all fitters (parabolic functions), but the value
600 // added to each fitter is different. The simple fitter gets the charge plugged in as is, the sqrt fitter
601 // gets the square root of the charge, and the log fitter gets fgkM*(1+q/fgkM), where q is the original charge
606 Error("AddCluster", "Cluster not valid.");
610 if (dedge < 3.) return;
611 if (fraction2 > 0.7) return;
613 //Int_t padType = GetPadType(cluster->GetX());
615 //Double_t centerPad[2] = {0};
616 //AliTPCFitPad::GetPadRegionCenterLocal(padType, centerPad);
617 //xx[0] = cluster->GetX() - centerPad[0];
618 //xx[1] = cluster->GetY() - centerPad[1];
619 xx[0] = cluster->GetX() - xcenter;
620 xx[1] = cluster->GetY();
621 xx[2] = xx[0] * xx[0];
622 xx[3] = xx[1] * xx[1];
623 xx[4] = xx[0] * xx[1];
624 xx[5] = TMath::Abs(cluster->GetZ()) - TMath::Abs(meanPos[4]);
625 xx[6] = xx[5] * xx[5];
627 // Update profile histograms
633 Int_t segment = cluster->GetDetector() % 36;
634 Double_t q = fgkUseTotalCharge ? ((Double_t)(cluster->GetQ())) : ((Double_t)(cluster->GetMax())); // note: no normalization to pad size!
636 // just for debugging
639 GetRowPad(cluster->GetX(), cluster->GetY(), row, pad);
640 fDebugCalPadRaw->GetCalROC(cluster->GetDetector())->SetValue(row, pad, q + fDebugCalPadRaw->GetCalROC(cluster->GetDetector())->GetValue(row, pad));
642 // correct charge by normalising to mean charge per track
645 // just for debugging
646 fDebugCalPadCorr->GetCalROC(cluster->GetDetector())->SetValue(row, pad, q + fDebugCalPadCorr->GetCalROC(cluster->GetDetector())->GetValue(row, pad));
648 Double_t sqrtQ = TMath::Sqrt(q);
649 Double_t logQ = fgkM * TMath::Log(1 + q / fgkM);
650 fSimpleFitter->GetFitter(segment, padType)->AddPoint(xx, q);
651 fSqrtFitter->GetFitter(segment, padType)->AddPoint(xx, sqrtQ);
652 fLogFitter->GetFitter(segment, padType)->AddPoint(xx, logQ);
653 fSingleSectorFitter->GetFitter(0, padType)->AddPoint(xx, q);
655 // this will be gone for the a new ROOT version > v5-17-05
656 if (padType == kShortPads)
657 fNShortClusters[segment]++;
658 if (padType == kMediumPads)
659 fNMediumClusters[segment]++;
660 if (padType == kLongPads)
661 fNLongClusters[segment]++;
664 void AliTPCcalibTracksGain::Evaluate(Bool_t robust, Double_t frac) {
666 // Evaluates all fitters contained in this object.
667 // If the robust option is set to kTRUE a robust fit is performed with frac as
668 // the minimal fraction of good points (see TLinearFitter::EvalRobust for details).
669 // Beware: Robust fitting is much slower!
672 fSimpleFitter->Evaluate(robust, frac);
673 fSqrtFitter->Evaluate(robust, frac);
674 fLogFitter->Evaluate(robust, frac);
675 fSingleSectorFitter->Evaluate(robust, frac);
684 AliTPCCalPad* AliTPCcalibTracksGain::CreateFitCalPad(UInt_t fitType, Bool_t undoTransformation, Bool_t normalizeToPadSize) {
686 // Creates the calibration object AliTPCcalPad using fitted parameterization
689 for (UInt_t iSector = 0; iSector < 72; iSector++)
690 tpc.Add(CreateFitCalROC(iSector, fitType, undoTransformation, normalizeToPadSize));
691 return new AliTPCCalPad(&tpc);
694 AliTPCCalROC* AliTPCcalibTracksGain::CreateFitCalROC(UInt_t sector, UInt_t fitType, Bool_t undoTransformation, Bool_t normalizeToPadSize) {
696 // Create the AliTPCCalROC with the values per pad
697 // sector - sector of interest
703 GetParameters(sector % 36, 0, fitType, par);
704 return CreateFitCalROC(sector, 0, par, fitType, undoTransformation, normalizeToPadSize);
707 GetParameters(sector % 36, 1, fitType, par);
708 AliTPCCalROC* roc1 = CreateFitCalROC(sector, 1, par, fitType, undoTransformation, normalizeToPadSize);
709 GetParameters(sector % 36, 2, fitType, par);
710 AliTPCCalROC* roc2 = CreateFitCalROC(sector, 2, par, fitType, undoTransformation, normalizeToPadSize);
711 AliTPCCalROC* roc3 = CreateCombinedCalROC(roc1, roc2);
718 AliTPCCalROC* AliTPCcalibTracksGain::CreateFitCalROC(UInt_t sector, UInt_t padType, TVectorD &fitParam, UInt_t fitType, Bool_t undoTransformation, Bool_t normalizeToPadSize) {
720 // This function is essentially a copy of AliTPCCalROC::CreateGlobalFitCalROC(...), with the
721 // modifications, that the center of the region of same pad size is used as the origin
722 // of the fit function instead of the center of the ROC.
723 // The possibility of a linear fit is removed as well because it is not needed.
724 // Only values for pads with the given pad size are calculated, the rest is 0.
725 // Set undoTransformation for undoing the transformation that was applied to the
726 // charge values before they were put into the fitter (thus allowing comparison to the original
727 // charge values). For fitType use 0 for the simple fitter, 1 for the sqrt fitter, 2 for the log fitter.
728 // If normalizeToPadSize is true, the values are normalized to the pad size.
729 // Please be aware, that you even need to specify the fitType if you want to normalize to the pad size without
730 // undoing the transformation (because normalizing involves undoing the trafo first, then normalizing, then
731 // applying the trafo again).
732 // Please note: The normalization to the pad size is a simple linear scaling with the pad length, which
733 // actually doesn't describe reality!
737 Double_t centerPad[2] = {0};
738 Float_t localXY[3] = {0};
739 AliTPCROC* tpcROC = AliTPCROC::Instance();
740 if ((padType == 0 && sector >= tpcROC->GetNInnerSector()) || (padType > 0 && sector < tpcROC->GetNInnerSector()) || sector >= tpcROC->GetNSector())
742 AliTPCCalROC* lROCfitted = new AliTPCCalROC(sector);
743 //tpcROC->GetPositionLocal(sector, lROCfitted->GetNrows()/2, lROCfitted->GetNPads(lROCfitted->GetNrows()/2)/2, centerPad); // use this instead of the switch statement if you want to calculate the center of the ROC and not the center of the regions with the same pad size
749 endRow = lROCfitted->GetNrows();
757 endRow = lROCfitted->GetNrows();
761 AliTPCFitPad::GetPadRegionCenterLocal(padType, centerPad);
763 for (UInt_t irow = startRow; irow < endRow; irow++) {
764 for (UInt_t ipad = 0; ipad < lROCfitted->GetNPads(irow); ipad++) {
765 tpcROC->GetPositionLocal(sector, irow, ipad, localXY); // calculate position localXY by pad and row number
766 dlx = localXY[0] - centerPad[0];
767 dly = localXY[1] - centerPad[1];
768 value = fitParam[0] + fitParam[1]*dlx + fitParam[2]*dly + fitParam[3]*dlx*dlx + fitParam[4]*dly*dly + fitParam[5]*dlx*dly;
770 // Let q' = value be the transformed value without any pad size corrections,
771 // let T be the transformation and let l be the pad size
772 // 1) don't undo transformation, don't normalize: return q'
773 // 2) undo transformation, don't normalize: return T^{-1} q'
774 // 3) undo transformation, normalize: return (T^{-1} q') / l
775 // 4) don't undo transformation, normalize: return T((T^{-1} q') / l)
776 if (!undoTransformation && !normalizeToPadSize) {/* value remains unchanged */} // (1)
777 else { // (2), (3), (4)
780 case 0: /* value remains unchanged */ break;
781 case 1: value = value * value; break;
782 case 2: value = (TMath::Exp(value / fgkM) - 1) * fgkM; break;
783 default: Error("CreateFitCalROC", "Wrong fit type."); break;
785 if (normalizeToPadSize) value /= GetPadLength(localXY[0]); // (3)
787 if (!undoTransformation && normalizeToPadSize) { // (4)
790 case 0: /* value remains unchanged */ break;
791 case 1: value = TMath::Sqrt(value); break;
792 case 2: value = fgkM * TMath::Log(1 + value / fgkM); break;
793 default: Error("CreateFitCalROC", "Wrong fit type."); break;
796 lROCfitted->SetValue(irow, ipad, value);
802 AliTPCCalROC* AliTPCcalibTracksGain::CreateCombinedCalROC(const AliTPCCalROC* roc1, const AliTPCCalROC* roc2) {
804 // Combines the medium pad size values of roc1 with the long pad size values of roc2 into a new
805 // AliTPCCalROC. Returns a null pointer if any one of the ROCs is an IROC; issues a warning message
806 // if the sectors of roc1 and roc2 don't match, but still continue and use the sector of roc1 as the
807 // sector of the new ROC.
810 if (!roc1 || !roc2) return 0;
811 if ((Int_t)(roc1->GetSector()) < fgTPCparam->GetNInnerSector()) return 0;
812 if ((Int_t)(roc2->GetSector()) < fgTPCparam->GetNInnerSector()) return 0;
813 if (roc1->GetSector() != roc2->GetSector()) Warning("CreateCombinedCalROC", "Sector number mismatch.");
814 AliTPCCalROC* roc = new AliTPCCalROC(roc1->GetSector());
816 for (UInt_t iRow = 0; iRow < 64; iRow++) {
817 for (UInt_t iPad = 0; iPad < roc->GetNPads(iRow); iPad++)
818 roc->SetValue(iRow, iPad, roc1->GetValue(iRow, iPad));
820 for (UInt_t iRow = 64; iRow < roc->GetNrows(); iRow++) {
821 for (UInt_t iPad = 0; iPad < roc->GetNPads(iRow); iPad++)
822 roc->SetValue(iRow, iPad, roc2->GetValue(iRow, iPad));
827 void AliTPCcalibTracksGain::GetParameters(UInt_t segment, UInt_t padType, UInt_t fitType, TVectorD &fitParam) {
829 // Puts the fit parameters for the specified segment (IROC & OROC), padType and fitType
830 // into the fitParam TVectorD (which should contain 8 elements).
831 // padType is one of kShortPads, kMediumPads, kLongPads. fitType is one of kSimpleFitter, kSqrtFitter, kLogFitter.
832 // Note: The fitter has to be evaluated first!
835 GetFitter(segment, padType, fitType)->GetParameters(fitParam);
838 void AliTPCcalibTracksGain::GetErrors(UInt_t segment, UInt_t padType, UInt_t fitType, TVectorD &fitError) {
840 // Puts the fit parameter errors for the specified segment (IROC & OROC), padType and fitType
841 // into the fitError TVectorD (which should contain 8 elements).
842 // padType is one of kShortPads, kMediumPads, kLongPads. fitType is one of kSimpleFitter, kSqrtFitter, kLogFitter.
843 // Note: The fitter has to be evaluated first!
846 GetFitter(segment, padType, fitType)->GetErrors(fitError);
847 fitError *= TMath::Sqrt(GetRedChi2(segment, padType, fitType));
850 Double_t AliTPCcalibTracksGain::GetRedChi2(UInt_t segment, UInt_t padType, UInt_t fitType) {
852 // Returns the reduced chi^2 value for the specified segment, padType and fitType.
853 // padType is one of kShortPads, kMediumPads, kLongPads. fitType is one of kSimpleFitter, kSqrtFitter, kLogFitter.
854 // Note: The fitter has to be evaluated first!
857 // this will be gone for the a new ROOT version > v5-17-05
858 Int_t lNClusters = 0;
861 lNClusters = fNShortClusters[segment];
864 lNClusters = fNMediumClusters[segment];
867 lNClusters = fNLongClusters[segment];
870 return GetFitter(segment, padType, fitType)->GetChisquare()/(lNClusters - 8);
873 void AliTPCcalibTracksGain::GetCovarianceMatrix(UInt_t segment, UInt_t padType, UInt_t fitType, TMatrixD& covMatrix) {
875 // Returns the covariance matrix for the specified segment, padType, fitType.
876 // padType is one of kShortPads, kMediumPads, kLongPads. fitType is one of kSimpleFitter, kSqrtFitter, kLogFitter.
879 GetFitter(segment, padType, fitType)->GetCovarianceMatrix(covMatrix);
882 TLinearFitter* AliTPCcalibTracksGain::GetFitter(UInt_t segment, UInt_t padType, UInt_t fitType) {
884 // Returns the TLinearFitter object for the specified segment, padType, fitType.
885 // padType is one of kShortPads, kMediumPads, kLongPads. fitType is one of kSimpleFitter, kSqrtFitter, kLogFitter.
890 return fSimpleFitter->GetFitter(segment, padType);
892 return fSqrtFitter->GetFitter(segment, padType);
894 return fLogFitter->GetFitter(segment, padType);
896 return fSingleSectorFitter->GetFitter(0, padType);
901 Double_t AliTPCcalibTracksGain::GetPadLength(Double_t lx) {
903 // The function returns 0.75 for an IROC, 1. for an OROC at medium pad size position,
904 // 1.5 for an OROC at long pad size position, -1 if out of bounds.
907 Double_t irocLow = fgTPCparam->GetPadRowRadiiLow(0) - fgTPCparam->GetInnerPadPitchLength()/2;
908 Double_t irocUp = fgTPCparam->GetPadRowRadiiLow(fgTPCparam->GetNRowLow()-1) + fgTPCparam->GetInnerPadPitchLength()/2;
909 Double_t orocLow1 = fgTPCparam->GetPadRowRadiiUp(0) - fgTPCparam->GetOuter1PadPitchLength()/2;
910 Double_t orocUp1 = fgTPCparam->GetPadRowRadiiUp(fgTPCparam->GetNRowUp1()-1) + fgTPCparam->GetOuter1PadPitchLength()/2;
911 Double_t orocLow2 = fgTPCparam->GetPadRowRadiiUp(fgTPCparam->GetNRowUp1()) - fgTPCparam->GetOuter2PadPitchLength()/2;
912 Double_t orocUp2 = fgTPCparam->GetPadRowRadiiUp(fgTPCparam->GetNRowUp()-1) + fgTPCparam->GetOuter2PadPitchLength()/2;
915 if (lx >= irocLow && lx <= irocUp) return 0.75;
916 // if OROC medium pads
917 if (lx >= orocLow1 && lx <= orocUp1) return 1.;
919 if (lx >= orocLow2 && lx <= orocUp2) return 1.5;
924 Int_t AliTPCcalibTracksGain::GetPadType(Double_t lx) {
926 // The function returns 0 for an IROC, 1 for an OROC at medium pad size position,
927 // 2 for an OROC at long pad size position, -1 if out of bounds.
930 if (GetPadLength(lx) == 0.75) return 0;
931 else if (GetPadLength(lx) == 1.) return 1;
932 else if (GetPadLength(lx) == 1.5) return 2;
936 // ONLY FOR DEBUGGING PURPOSES - REMOVE ME WHEN NOT NEEDED ANYMORE
937 Bool_t AliTPCcalibTracksGain::GetRowPad(Double_t lx, Double_t ly, Int_t& row, Int_t& pad) {
939 // Calculate the row and pad number when the local coordinates are given.
940 // Returns kFALSE if the position is out of range, otherwise return kTRUE.
941 // WARNING: This function is preliminary and probably isn't very accurate!!
944 Double_t irocLow = fgTPCparam->GetPadRowRadiiLow(0) - fgTPCparam->GetInnerPadPitchLength()/2;
945 //Double_t irocUp = fgTPCparam->GetPadRowRadiiLow(fgTPCparam->GetNRowLow()-1) + fgTPCparam->GetInnerPadPitchLength()/2;
946 Double_t orocLow1 = fgTPCparam->GetPadRowRadiiUp(0) - fgTPCparam->GetOuter1PadPitchLength()/2;
947 //Double_t orocUp1 = fgTPCparam->GetPadRowRadiiUp(fgTPCparam->GetNRowUp1()-1) + fgTPCparam->GetOuter1PadPitchLength()/2;
948 Double_t orocLow2 = fgTPCparam->GetPadRowRadiiUp(fgTPCparam->GetNRowUp1()) - fgTPCparam->GetOuter2PadPitchLength()/2;
949 //Double_t orocUp2 = fgTPCparam->GetPadRowRadiiUp(fgTPCparam->GetNRowUp()-1) + fgTPCparam->GetOuter2PadPitchLength()/2;
951 if (GetPadType(lx) == 0) {
952 row = (Int_t)((lx - irocLow) / fgTPCparam->GetInnerPadPitchLength());
953 pad = (Int_t)((ly + fgTPCparam->GetYInner(row)) / fgTPCparam->GetInnerPadPitchWidth());
954 } else if (GetPadType(lx) == 1) {
955 row = (Int_t)((lx - orocLow1) / fgTPCparam->GetOuter1PadPitchLength());
956 pad = (Int_t)((ly + fgTPCparam->GetYOuter(row)) / fgTPCparam->GetOuterPadPitchWidth());
957 } else if (GetPadType(lx) == 2) {
958 row = fgTPCparam->GetNRowUp1() + (Int_t)((lx - orocLow2) / fgTPCparam->GetOuter2PadPitchLength());
959 pad = (Int_t)((ly + fgTPCparam->GetYOuter(row)) / fgTPCparam->GetOuterPadPitchWidth());
965 void AliTPCcalibTracksGain::DumpTrack(AliTPCseed* track) {
967 // Dump track information to the debug stream
980 for (Int_t ipad = 0; ipad < 3; ipad++) {
981 dedxM[ipad].ResizeTo(5);
982 dedxQ[ipad].ResizeTo(5);
983 parY[ipad].ResizeTo(3);
984 parZ[ipad].ResizeTo(3);
985 meanPos[ipad].ResizeTo(6);
986 Bool_t isOK = GetDedx(track, ipad, rows, sector[ipad], npoints[ipad], dedxM[ipad], dedxQ[ipad], parY[ipad], parZ[ipad], meanPos[ipad]);
988 AddTracklet(sector[ipad],ipad, dedxQ[ipad], dedxM[ipad], parY[ipad], parZ[ipad], meanPos[ipad] );
992 (*fDebugStream) << "Track" <<
993 "Track.=" << track << // track information
999 (*fDebugStream) << "TrackG" <<
1000 "Track.=" << track << // track information
1002 // info for pad type 0
1003 "sector0="<<sector[0]<<
1004 "npoints0="<<npoints[0]<<
1005 "dedxM0.="<<&dedxM[0]<<
1006 "dedxQ0.="<<&dedxQ[0]<<
1007 "parY0.="<<&parY[0]<<
1008 "parZ0.="<<&parZ[0]<<
1009 "meanPos0.="<<&meanPos[0]<<
1011 // info for pad type 1
1012 "sector1="<<sector[1]<<
1013 "npoints1="<<npoints[1]<<
1014 "dedxM1.="<<&dedxM[1]<<
1015 "dedxQ1.="<<&dedxQ[1]<<
1016 "parY1.="<<&parY[1]<<
1017 "parZ1.="<<&parZ[1]<<
1018 "meanPos1.="<<&meanPos[1]<<
1020 // info for pad type 2
1021 "sector2="<<sector[2]<<
1022 "npoints2="<<npoints[2]<<
1023 "dedxM2.="<<&dedxM[2]<<
1024 "dedxQ2.="<<&dedxQ[2]<<
1025 "parY2.="<<&parY[2]<<
1026 "parZ2.="<<&parZ[2]<<
1027 "meanPos2.="<<&meanPos[2]<<
1034 Bool_t AliTPCcalibTracksGain::GetDedx(AliTPCseed* track, Int_t padType, Int_t* /*rows*/,
1035 Int_t §or, Int_t& npoints,
1036 TVectorD &dedxM, TVectorD &dedxQ,
1037 TVectorD &parY, TVectorD &parZ, TVectorD&meanPos)
1040 // GetDedx for given sector for given track
1041 // padType - type of pads
1044 static TLinearFitter fitY(2, "pol1");
1045 static TLinearFitter fitZ(2, "pol1");
1048 Int_t firstRow = 0, lastRow = 0;
1050 Float_t xcenter = 0;
1051 const Float_t ktany = TMath::Tan(TMath::DegToRad() * 10);
1052 const Float_t kedgey = 4.;
1055 lastRow = fgTPCparam->GetNRowLow();
1059 firstRow = fgTPCparam->GetNRowLow();
1060 lastRow = fgTPCparam->GetNRowLow() + fgTPCparam->GetNRowUp1();
1064 firstRow = fgTPCparam->GetNRowLow() + fgTPCparam->GetNRowUp1();
1065 lastRow = fgTPCparam->GetNRowLow() + fgTPCparam->GetNRowUp();
1068 minRow = (lastRow - firstRow) / 2;
1071 Int_t nclusters = 0;
1072 Int_t nclustersNE = 0; // number of not edge clusters
1073 Int_t lastSector = -1;
1074 Float_t amplitudeQ[100];
1075 Float_t amplitudeM[100];
1083 for (Int_t iCluster = firstRow; iCluster < lastRow; iCluster++) {
1084 AliTPCclusterMI* cluster = track->GetClusterPointer(iCluster);
1086 Int_t detector = cluster->GetDetector() ;
1087 if (lastSector == -1) lastSector = detector;
1088 if (lastSector != detector) continue;
1089 amplitudeQ[nclusters] = cluster->GetQ();
1090 amplitudeM[nclusters] = cluster->GetMax();
1091 rowIn[nclusters] = iCluster;
1093 Double_t dx = cluster->GetX() - xcenter;
1094 Double_t y = cluster->GetY();
1095 Double_t z = cluster->GetZ();
1096 fitY.AddPoint(&dx, y);
1097 fitZ.AddPoint(&dx, z);
1104 if (TMath::Abs(cluster->GetY()) < cluster->GetX()*ktany - kedgey) nclustersNE++;
1108 if (nclusters < minRow / 2) return kFALSE;
1109 if (nclustersNE < minRow / 2) return kFALSE;
1110 for (Int_t i = 0; i < 6; i++) meanPos[i] /= Double_t(nclusters);
1113 fitY.GetParameters(parY);
1114 fitZ.GetParameters(parZ);
1116 // calculate truncated mean
1118 TMath::Sort(nclusters, amplitudeQ, index, kFALSE);
1123 for (Int_t i = 0; i < 5; i++) {
1132 for (Int_t i = 0; i < nclusters; i++) {
1133 Int_t rowSorted = rowIn[index[i]];
1134 AliTPCclusterMI* cluster = track->GetClusterPointer(rowSorted);
1136 if (TMath::Abs(cluster->GetY()) > cluster->GetX()*ktany - kedgey) continue; //don't take edge clusters
1138 if (inonEdge < nclustersNE * 0.5) {
1140 dedxQ[0] += amplitudeQ[index[i]];
1141 dedxM[0] += amplitudeM[index[i]];
1143 if (inonEdge < nclustersNE * 0.6) {
1145 dedxQ[1] += amplitudeQ[index[i]];
1146 dedxM[1] += amplitudeM[index[i]];
1148 if (inonEdge < nclustersNE * 0.7) {
1150 dedxQ[2] += amplitudeQ[index[i]];
1151 dedxM[2] += amplitudeM[index[i]];
1153 if (inonEdge < nclustersNE * 0.8) {
1155 dedxQ[3] += amplitudeQ[index[i]];
1156 dedxM[3] += amplitudeM[index[i]];
1158 if (inonEdge < nclustersNE * 0.9) {
1160 dedxQ[4] += amplitudeQ[index[i]];
1161 dedxM[4] += amplitudeM[index[i]];
1164 for (Int_t i = 0; i < 5; i++) {
1165 dedxQ[i] /= ndedx[i];
1166 dedxM[i] /= ndedx[i];
1170 Float_t momenta = track->GetP();
1171 Float_t mdedx = track->GetdEdx();
1172 for (Int_t i = 0; i < nclusters; i++) {
1173 Int_t rowSorted = rowIn[index[i]];
1174 AliTPCclusterMI* cluster = track->GetClusterPointer(rowSorted);
1176 printf("Problem\n");
1179 if (TMath::Abs(cluster->GetY()) < cluster->GetX()*ktany - kedgey) inonEdge++;
1180 Float_t dedge = cluster->GetX()*ktany - TMath::Abs(cluster->GetY());
1181 Float_t fraction = Float_t(i) / Float_t(nclusters);
1182 Float_t fraction2 = Float_t(inonEdge) / Float_t(nclustersNE);
1184 AddCluster(cluster, momenta, mdedx, padType, xcenter, dedxQ, dedxM, fraction, fraction2, dedge, parY, parZ, meanPos);
1186 (*fDebugStream) << "dEdx" <<
1187 "Cl.=" << cluster << // cluster of interest
1188 "P=" << momenta << // track momenta
1189 "dedx=" << mdedx << // mean dedx - corrected for angle
1190 "IPad=" << padType << // pad type 0..2
1191 "xc=" << xcenter << // x center of chamber
1192 "dedxQ.=" << &dedxQ << // dedxQ - total charge
1193 "dedxM.=" << &dedxM << // dedxM - maximal charge
1194 "fraction=" << fraction << // fraction - order in statistic (0,1)
1195 "fraction2=" << fraction2 << // fraction - order in statistic (0,1)
1196 "dedge=" << dedge << // distance to the edge
1197 "parY.=" << &parY << // line fit
1198 "parZ.=" << &parZ << // line fit
1199 "meanPos.=" << &meanPos << // mean position (dx, dx^2, y,y^2, z, z^2)
1203 (*fDebugStream) << "dEdxT" <<
1204 "P=" << momenta << // track momenta
1205 "npoints="<<inonEdge<< // number of points
1206 "sector="<<lastSector<< // sector number
1207 "dedx=" << mdedx << // mean dedx - corrected for angle
1208 "IPad=" << padType << // pad type 0..2
1209 "xc=" << xcenter << // x center of chamber
1210 "dedxQ.=" << &dedxQ << // dedxQ - total charge
1211 "dedxM.=" << &dedxM << // dedxM - maximal charge
1212 "parY.=" << &parY << // line fit
1213 "parZ.=" << &parZ << // line fit
1214 "meanPos.=" << &meanPos << // mean position (dx, dx^2, y,y^2, z, z^2)
1217 sector = lastSector;
1222 void AliTPCcalibTracksGain::AddTracklet(UInt_t sector, UInt_t padType,TVectorD &dedxQ, TVectorD &dedxM,TVectorD& parY, TVectorD& parZ, TVectorD& meanPos){
1224 // Add measured point - dedx to the fitter
1227 //chain->SetAlias("dr","(250-abs(meanPos.fElements[4]))/250");
1228 //chain->SetAlias("tz","(0+abs(parZ.fElements[1]))");
1229 //chain->SetAlias("ty","(0+abs(parY.fElements[1]))");
1230 //chain->SetAlias("corrg","sqrt((1+ty^2)*(1+tz^2))");
1231 //expession fast - TString *strq0 = toolkit.FitPlane(chain,"dedxQ.fElements[2]","dr++ty++tz++dr*ty++dr*tz++ty*tz++ty^2++tz^2","IPad==0",chi2,npoints,param,covar,0,100000);
1235 // z and angular part
1238 xxx[0] = (250.-TMath::Abs(meanPos[4]))/250.;
1239 xxx[1] = TMath::Abs(parY[1]);
1240 xxx[2] = TMath::Abs(parZ[1]);
1241 xxx[3] = xxx[0]*xxx[1];
1242 xxx[4] = xxx[0]*xxx[2];
1243 xxx[5] = xxx[1]*xxx[2];
1244 xxx[6] = xxx[0]*xxx[0];
1245 xxx[7] = xxx[1]*xxx[1];
1246 xxx[8] = xxx[2]*xxx[2];
1250 Int_t tsector = sector%36;
1251 for (Int_t i=0;i<35;i++){
1252 xxx[9+i]=(i==tsector)?1:0;
1254 TLinearFitter *fitterM = fFitter0M;
1255 if (padType==1) fitterM=fFitter1M;
1256 if (padType==2) fitterM=fFitter2M;
1257 fitterM->AddPoint(xxx,dedxM[1]);
1259 TLinearFitter *fitterT = fFitter0T;
1260 if (padType==1) fitterT = fFitter1T;
1261 if (padType==2) fitterT = fFitter2T;
1262 fitterT->AddPoint(xxx,dedxQ[1]);
1266 TGraph *AliTPCcalibTracksGain::CreateAmpGraph(Int_t ipad, Bool_t qmax){
1268 // create the amplitude graph
1269 // The normalized amplitudes are extrapolated to the 0 angle (y,z) and 0 drift length
1274 if (ipad==0) fFitter0M->GetParameters(vec);
1275 if (ipad==1) fFitter1M->GetParameters(vec);
1276 if (ipad==2) fFitter2M->GetParameters(vec);
1278 if (ipad==0) fFitter0T->GetParameters(vec);
1279 if (ipad==1) fFitter1T->GetParameters(vec);
1280 if (ipad==2) fFitter2T->GetParameters(vec);
1285 for (Int_t i=0;i<35;i++){
1287 amp[i]=vec[10+i]+vec[0];
1290 Float_t mean = TMath::Mean(36,amp);
1291 for (Int_t i=0;i<36;i++){
1293 amp[i]=(amp[i]-mean)/mean;
1295 TGraph *gr = new TGraph(36,sec,amp);
1300 void AliTPCcalibTracksGain::UpdateClusterParam(AliTPCClusterParam* clparam){
1302 // SetQ normalization parameters
1304 // void SetQnorm(Int_t ipad, Int_t itype, TVectorD * norm);
1308 fFitter0T->GetParameters(vec);
1309 clparam->SetQnorm(0,0,&vec);
1310 fFitter1T->GetParameters(vec);
1311 clparam->SetQnorm(1,0,&vec);
1312 fFitter2T->GetParameters(vec);
1313 clparam->SetQnorm(2,0,&vec);
1315 fFitter0M->GetParameters(vec);
1316 clparam->SetQnorm(0,1,&vec);
1317 fFitter1M->GetParameters(vec);
1318 clparam->SetQnorm(1,1,&vec);
1319 fFitter2M->GetParameters(vec);
1320 clparam->SetQnorm(2,1,&vec);
1326 void AliTPCcalibTracksGain::Analyze(){