Major upgrade of AliRoot code
[u/mrichter/AliRoot.git] / ALIFAST / AliFTrackMaker.cxx
1 //////////////////////////////////////////////////////////////////////////
2 //                                                                      //
3 // AliFast TrackMaker class.                                            //
4 //                                                                      //
5 //                                                                      //
6 //////////////////////////////////////////////////////////////////////////
7 // ---------------------------------------------------------------------//
8 //                                                                      //
9 // origin: "res.f" fortran by Karel Safarik which was used to           //
10 //         calculate the track resolution for TP.                       //
11 //         Different detectors and material can be selected.            //
12 //         The basic routines compute information and error matrices    //
13 //         used for the calculation of momentum resolution.             //
14 //         see references: ASK KAREL??                                  //
15 //                                                                      //
16 // C++ in AliFast framework: Elzbieta Richter-Was and Yiota Foka        //
17 //                           following general structure od Makers in   //
18 //                           ATLFast by R. Brun.                        //
19 //                                                                      //
20 // purpose: provide a Maker which by using general basic routines of    //
21 //          "res.f" computes the necessary elements of covariance matrix// 
22 //          for the calculation of Track Resolution.                    //
23 //          Those elements are the product of the TrackResolMaker and   //
24 //          are hold in TrackResol class. They are expected to be used  //
25 //          together with additional information for the calculation of //
26 //          the smeared momenta.                                        //
27 //          Additional information necessary for this calculation       //
28 //          will be provided via classes or functions specific to the   //
29 //          specific study and/or detectors.                            //
30 //          One can select the detector and/or material for a specific  //
31 //          study.                                                      //
32 //                                                                      //
33 // starting point: res.f will be initialy partially contained in        // 
34 //                 AliFTrackResolMaker and in AliFDet                   // 
35 //                 It will be reorganised further in the framework of   //
36 //                 AliFast according to the needs.                      //
37 //                 Names of variables are kept as in fortran code.      //
38 //                                                                      //
39 //////////////////////////////////////////////////////////////////////////
40
41
42 #ifdef WIN32
43 // there is a bug in the Microsoft VisualC++ compiler
44 // this class must be compiled with optimization off on Windows
45 # pragma optimize( "", off )
46 #endif
47
48 #include <TParticle.h>
49 #include <TFile.h>
50 #include <TSystem.h>
51 #include <TRandom.h>
52 #include <TROOT.h>
53 #include <TMath.h>
54 #include <TH1.h>
55 #include <TH2.h>
56 #include <TH3.h>
57
58 #include "AliFast.h"
59 //#include "AliFMCMaker.h"
60 #include "AliFTrackMaker.h"
61 #include "AliFTrack.h"
62 #include "AliFDet.h"
63
64 const Double_t kPi       = TMath::Pi();
65 const Double_t k2Pi      = 2*kPi;
66 const Double_t kPiHalf   = kPi/2.;
67 extern  AliFast * gAliFast;
68 ClassImp(AliFTrackMaker)
69
70 //_____________________________________________________________________________
71 AliFTrackMaker::AliFTrackMaker()
72 {
73    fNTracks = 0;
74 }
75
76 //_____________________________________________________________________________
77 AliFTrackMaker::AliFTrackMaker(const char *name, const char *title)
78                  :AliFMaker(name,title)
79 {
80 //    Default Setters for tracks
81
82    fFruits     = new TClonesArray("AliFTrack",100, kFALSE);
83    fBranchName = "Tracks";
84    fNTracks    = 0;
85 // Please, how to do this optionally ??!!!
86    Save();
87 }
88
89 //_____________________________________________________________________________
90 AliFTrackMaker::~AliFTrackMaker()
91 {
92    //dummy
93 }
94
95 //_____________________________________________________________________________
96 AliFTrack *AliFTrackMaker::AddTrack(Int_t code, Double_t charge, 
97                                     Double_t pT, Double_t eta,Double_t phi,
98                                     Double_t v11, Double_t v22, Double_t v33,
99                                     Double_t v12, Double_t v13, Double_t v23, Int_t iFlag)
100 {
101 //            Add a new track to the list of tracks
102
103  //Note the use of the "new with placement" to create a new track object.
104  //This complex "new" works in the following way:
105  //   tracks[i] is the value of the pointer for track number i in the TClonesArray
106  //   if it is zero, then a new track must be generated. This typically
107  //   will happen only at the first events
108  //   If it is not zero, then the already existing object is overwritten
109  //   by the new track parameters.
110  // This technique should save a huge amount of time otherwise spent
111  // in the operators new and delete.
112
113    TClonesArray &tracks = *(TClonesArray*)fFruits;
114    return new(tracks[fNTracks++]) AliFTrack(code,charge,pT,eta,phi,
115                                   v11, v22, v33, v12, v13, v23, iFlag);
116 }
117
118 //_____________________________________________________________________________
119 void AliFTrackMaker::Clear(Option_t *option)
120 {
121    //Reset Track Maker
122
123    fNTracks = 0;
124    AliFMaker::Clear(option);
125 }
126
127 //_____________________________________________________________________________
128 void AliFTrackMaker::Draw(Option_t *)
129 {
130 //    Dummy Draw
131
132 }
133
134 //_____________________________________________________________________________
135 void AliFTrackMaker::Init()
136 {
137   //Create control histograms 
138   if(gAliFast->TestTrack() == 0){
139
140      fResID11 = new TH1D("ResID11","Elec: delta(1/pTotal)*pTotal",1000,-0.5,0.5); 
141      fResID12 = new TH1D("ResID12","Elec: delta(lambda)/lambda",1000,-0.01,0.01); 
142      fResID13 = new TH1D("ResID13","Elec: delta(phi)/phi",1000,-0.01,0.01); 
143
144      fResID21 = new TH1D("ResID21","Pion: delta(1/pTotal)*pTotal",1000,-1.0,1.0); 
145      fResID22 = new TH1D("ResID22","Pion: delta(lambda)/lambda",1000,-1.0,1.0); 
146      fResID23 = new TH1D("ResID23","Pion: delta(phi)/phi",1000,-1.0,1.0); 
147
148      fResID31 = new TH1D("ResID31","Kaon: delta(1/pTotal)*pTotal",1000,-1.0,1.0); 
149      fResID32 = new TH1D("ResID32","Kaon: delta(lambda)/lambda",1000,-1.0,1.0); 
150      fResID33 = new TH1D("ResID33","Kaon: delta(phi)/phi",1000,-1.0,1.0); 
151
152      fResID41 = new TH1D("ResID41","Proton: delta(1/pTotal)*pTotal",1000,-1.0,1.0); 
153      fResID42 = new TH1D("ResID42","Proton: delta(lambda)/lambda",1000,-1.0,1.0); 
154      fResID43 = new TH1D("ResID43","Proton: delta(phi)/phi",1000,-1.0,1.0); 
155
156   }   
157   //Create test histograms for TestJob only  
158   if(gAliFast->TestTrack() == 1){
159      fResID1Test  = new TH1D("ResID1Test","histogram21 from res.f",1000,0.075,10.075); 
160      fResID2Test  = new TH1D("ResID2Test","histogram21 from res.f",1000,0.075,10.075); 
161      fResID3Test  = new TH1D("ResID3Test","histogram21 from res.f",1000,0.075,10.075); 
162      fResID4Test  = new TH1D("ResID4Test","histogram21 from res.f",1000,0.075,10.075); 
163      fResID5Test  = new TH1D("ResID5Test","histogram21 from res.f",1000,0.075,10.075); 
164   }
165
166   //Set particle masses
167    SetPionMass();
168    SetKaonMass();
169    SetElectronMass();
170    SetProtonMass();
171
172   //Switch on/off tracks reconstruction
173    SetRecTrack();
174
175 }
176
177 //_____________________________________________________________________________
178 // Calculate track and its resolution
179 //_____________________________________________________________________________
180 void AliFTrackMaker::Make()
181 {
182   Double_t v11, v22, v33, v12, v13, v23;
183   Int_t iFlag;
184
185   fNTracks = 0; 
186
187   // Check if it is a TestJob
188   if(gAliFast->TestTrack() == 1){
189      // Run test job
190      MakeTest(10);
191   }else{
192      // Run production job  
193      // Get pointers to Particles arrays and TClonesArray
194
195      Int_t idPart, idTrack;
196      Double_t  charge, pT, eta, phi;
197      TParticle *part;
198      Int_t  nparticles = gAlice->GetNtrack();
199      printf("%10s%10d\n","nparticles",nparticles);
200      for(Int_t ind=0;ind<nparticles;ind++) {       
201        part = gAlice->Particle(ind);
202        idPart  = part->GetPdgCode();
203        charge  = part->GetPDG()->Charge();
204        pT      = part->Pt();  
205        eta     = part->Eta();
206        phi     = part->Phi();
207        printf("%10s%10d%20.5e%20.5e%20.5e%20.5e\n","Particle",idPart,charge,pT,eta,phi);
208        // Check convention for tracks reconstruction
209        idTrack = 0;
210        if(TMath::Abs(idPart) ==   11)                 idTrack = 1;
211        if(TMath::Abs(idPart) == 111 || TMath::Abs(idPart) == 211) idTrack = 2;
212        if(TMath::Abs(idPart) == 311 || TMath::Abs(idPart) == 321) idTrack = 3;
213        if(TMath::Abs(idPart) == 2212)                 idTrack = 4;
214        
215        if(idTrack > 0 && fRecTrack > 0){
216          // Check if track should be reconstructed
217          if((fRecTrack == 1 && idTrack == 1) ||
218             (fRecTrack == 2 && idTrack == 2) ||
219             (fRecTrack == 3 && idTrack == 3) ||
220             (fRecTrack == 4 && idTrack == 4) ||
221             fRecTrack == 100 ) {
222            // Tracks are  reconstructed
223            ErrorMatrix(idTrack,pT,eta, v11, v22, v33, v12, v13, v23, iFlag);
224            
225            // Calculate and smear track parameters
226            Double_t lambda, cosLambda, pTotal,pInverse;
227            Double_t pInverseSmea, lambdaSmea, phiSmea;
228            Double_t a1, a2, a3, b2, b3, c3;
229            Double_t rn1, rn2, rn3;
230            
231            lambda    = kPiHalf -2.0*TMath::ATan(TMath::Exp(-eta));
232            cosLambda = TMath::Cos(lambda);
233            pTotal    = pT/cosLambda;
234            pInverse  = 1.0/pTotal;
235            
236            a1  = TMath::Sqrt(v11);
237            if(a1 == 0.){
238              a2 = 0;
239              a3 = 0;
240            }else{
241              a2  = v12/a1;
242              a3  = v13/a1;
243            }
244            b2  = TMath::Sqrt(v22-a2*a2);
245            if(b2 == 0.){
246              b3 = 0;
247            }else{
248              b3  = (v23 - a2*a3)/b2;
249            }
250            c3  = TMath::Sqrt(v33 - a3*a3 -b3*b3);
251            rn1 = gRandom->Gaus(0,1);
252            rn2 = gRandom->Gaus(0,1);
253            rn3 = gRandom->Gaus(0,1);
254            
255            pInverseSmea  = pInverse + a1*rn1;
256            lambdaSmea    = lambda + a2*rn1 + b2*rn2;
257            phiSmea       = phi + a3*rn1 + b3*rn2 + c3*rn3; 
258            
259            // Fill control histograms
260            if(idTrack == 1){
261              fResID11->Fill((pInverseSmea-pInverse)/pInverse);
262              fResID12->Fill((lambdaSmea-lambda)/lambda);
263              fResID13->Fill((phiSmea-phi)/phi);
264            }
265            else if(idTrack == 2){
266              fResID21->Fill((pInverseSmea-pInverse)/pInverse);
267              fResID22->Fill((lambdaSmea-lambda)/lambda);
268              fResID23->Fill((phiSmea-phi)/phi);
269            }
270            else if(idTrack == 3){
271              fResID31->Fill((pInverseSmea-pInverse)/pInverse);
272              fResID32->Fill((lambdaSmea-lambda)/lambda);
273              fResID33->Fill((phiSmea-phi)/phi);
274            }
275            else if(idTrack == 4){
276              fResID41->Fill((pInverseSmea-pInverse)/pInverse);
277              fResID42->Fill((lambdaSmea-lambda)/lambda);
278              fResID43->Fill((phiSmea-phi)/phi);
279            }
280          }else{
281            // Tracks are not reconstructed
282            v11=0.;
283            v12=0.;
284            v13=0.;
285            v22=0.;
286            v23=0.;
287            v33=0.;
288            iFlag=0;
289          }
290          // Store resolution variables  to AliFTrack  ClonesArray
291          AddTrack(idTrack, charge, pT, eta, phi, v11, v22, v33, v12, v13, v23, iFlag);
292          printf("%10s%10d%20.5e%20.5e%20.5e%20.5e%20.5e%20.5e%20.5e%20.5e%20.5e%20.5e%10d\n",
293               "Track",idTrack,charge,pT,eta,phi,v11, v22, v33, v12, v13, v23, iFlag);
294        }
295        
296      }
297   }
298 }
299
300 //_____________________________________________________________________________
301 void AliFTrackMaker::Finish()
302 {
303   // For TestJob only  
304   if(gAliFast->TestTrack() == 1){
305     /*
306     // Draw test histograms
307     TCanvas *c1 = new TCanvas("c1"," ",200,10,600,480);
308     c1->Divide(2,3);
309     c1->cd(1);   fResID1Test->Draw();
310     c1->cd(2);   fResID2Test->Draw();
311     c1->cd(3);   fResID3Test->Draw();
312     c1->cd(4);   fResID4Test->Draw();
313     c1->cd(5);   fResID5Test->Draw();
314     c1->Update();
315     // Store TestRes.eps file
316     c1->Print("TestRes.eps");
317     */
318     // Store histograms on file
319     TFile f2("TestRes.root","RECREATE","Test Res.f");
320     fResID1Test->Write();
321     fResID2Test->Write();
322     fResID3Test->Write();
323     fResID4Test->Write();
324     fResID5Test->Write();
325     f2.Close();
326   } 
327 }
328 //_____________________________________________________________________________
329 void AliFTrackMaker::ErrorMatrix(Int_t idTrack, Double_t pT,  Double_t eta,
330   Double_t &v11, Double_t &v22, Double_t &v33, Double_t &v12, Double_t &v13, Double_t &v23,
331   Int_t &iFlag)
332 {
333   ///////////////////////////////////////////////
334   //idTrack      track type            input   //
335   //pT           transverse mom        input   //
336   //lambda       deep angle            input   //
337   //v11,v22,v23  error matrix          output  //
338   //v12,v13,v23                        output  //
339   //iFlag                              output  //
340   ///////////////////////////////////////////////
341  
342   AliFDet *detector = gAliFast->Detector();
343   Int_t nDet = detector->NDet();
344   Int_t nDetActive = detector->NDetActive();
345   Int_t nTwice = nDetActive + nDetActive;
346
347   Double_t rTrack, rTrackInverse, pTotal, pInverse, diffPInverse;
348   Double_t safety;
349   Double_t cosLambda, tanLambda, diffLambda;
350   Double_t rDet;
351  
352   Double_t hh0[kNMaxDet2][kNMaxDet2], hhi0[kNMaxDet2][kNMaxDet2];  
353   Double_t hh1[kNMaxDet2][kNMaxDet2], hhi1[kNMaxDet2][kNMaxDet2];  
354   Double_t dhhiOverPInverse[kNMaxDet2][kNMaxDet2];  
355   Double_t dhhiOverLambda[kNMaxDet2][kNMaxDet2];  
356   Double_t a1[kNMaxDet2][kNMaxDet2], a2[kNMaxDet2][kNMaxDet2];  
357   Double_t a0PInverse[kNMaxDet2];  
358   Double_t a0Lambda[kNMaxDet2];  
359   Double_t a0Phi[kNMaxDet2]; 
360
361   Double_t vF11, vF12, vF13, vF22, vF23, vF33, d1, d2, d3, det; 
362   Int_t   idet, icyl, im, in;
363   Double_t phiHalf;
364   Double_t lambda;
365
366   lambda = kPiHalf -2.0*TMath::ATan(TMath::Exp(-eta));
367   rTrack    = detector->ConstMag()*pT;
368   safety    = 10.0;
369   if(2.0*rTrack < (detector->RDet(nDet) + safety)){
370       iFlag     = 0;
371       v11 = 0;
372       v22 = 0;
373       v33 = 0;
374       v12 = 0;
375       v13 = 0;
376       v23 = 0;
377       return;
378   }
379   iFlag        = 1;
380   cosLambda    = TMath::Cos(lambda);
381   pTotal       = pT/cosLambda;
382   pInverse     = 1.0/pTotal;
383   diffPInverse = pInverse*1.0e-5;
384   diffLambda   = 1.0e-4; 
385
386   // Compute likelihood and derivatives
387
388   LogLikelyhood(idTrack, pInverse, lambda);
389   for(icyl=1; icyl<nTwice+1; icyl++){
390      for(im=1; im<nTwice+1; im++){
391       hh0[icyl][im]  = HH(icyl,im); 
392       hhi0[icyl][im] = HHI(icyl,im);
393      }
394   }
395   LogLikelyhood(idTrack, pInverse+diffPInverse,lambda);
396   for(icyl=1; icyl<nTwice+1; icyl++){   
397      for(im=1; im<nTwice+1; im++){
398       hh1[icyl][im]  = HH(icyl,im);
399       hhi1[icyl][im] = HHI(icyl,im);
400      }
401   }  
402   for(icyl=1; icyl<nTwice+1; icyl++){
403      for(im=1; im<icyl+1; im++){
404         dhhiOverPInverse[icyl][im] = (hhi1[icyl][im]-hhi0[icyl][im])/diffPInverse; 
405      }
406   }
407   LogLikelyhood(idTrack, pInverse, lambda+diffLambda);
408   for(icyl=1; icyl<nTwice+1; icyl++){
409      for(im=1; im<nTwice+1; im++){
410       hh1[icyl][im]  = HH(icyl,im);
411       hhi1[icyl][im] = HHI(icyl,im);
412      }
413   }
414   for(icyl=1; icyl<nTwice+1; icyl++){
415      for(im=1; im<icyl+1; im++){
416         dhhiOverLambda[icyl][im] = (hhi1[icyl][im]-hhi0[icyl][im])/diffLambda; 
417      }
418   }
419
420   // Compute additional derivatives
421   rTrackInverse = 1.0/rTrack;
422   tanLambda    = TMath::Tan(lambda);
423   icyl = 0;
424   for(idet=1; idet<nDet+1;idet++){
425      if(detector->IFlagDet(idet) > 0){
426         icyl = icyl + 1;
427         rDet = detector->RDet(idet);
428         phiHalf = TMath::ASin(0.5*rDet*rTrackInverse);
429         Double_t rHelp   = rDet /
430                           (2.0 * TMath::Sqrt(1.0-(0.5 *rDet*rTrackInverse)*
431                                                  (0.5 *rDet*rTrackInverse)));
432         a0PInverse[icyl] = - rDet* rHelp
433                            /(detector->ConstMag()*cosLambda);
434         a0Lambda[icyl]   = - rDet* rHelp
435                            * tanLambda * rTrackInverse;
436         a0Phi[icyl]      =   rDet;
437         a0PInverse[nDetActive+icyl] = 2.0 * tanLambda
438                            *rTrack*(rHelp-rTrack*phiHalf)
439                            /(detector->ConstMag()*cosLambda);
440         a0Lambda[nDetActive+icyl]   = 2.0 * (  rHelp*tanLambda*tanLambda
441                                              + rTrack*phiHalf);
442         a0Phi[nDetActive+icyl] = 0.0 ;
443     }
444   }
445  
446   // Compute information matrix
447
448     vF11=0.0;
449     vF12=0.0;
450     vF13=0.0;
451     vF22=0.0;
452     vF23=0.0;
453     vF33=0.0;
454     for(icyl=1; icyl<nTwice+1; icyl++){
455        d1=0.0;     
456        d2=0.0;     
457        d3=0.0; 
458        for(im=1; im < icyl+1; im++){
459           d1 = d1 + hhi0[icyl][im]*a0PInverse[im];
460           d2 = d2 + hhi0[icyl][im]*a0Lambda[im];
461           d3 = d3 + hhi0[icyl][im]*a0Phi[im];
462        }
463        vF11 =vF11 + d1*d1;
464        vF12 =vF12 + d1*d2;
465        vF13 =vF13 + d1*d3;
466        vF22 =vF22 + d2*d2;
467        vF23 =vF23 + d2*d3;
468        vF33 =vF33 + d3*d3;
469     }
470     for(icyl=1; icyl<nTwice+1; icyl++){
471        for(im=1; im<icyl+1; im++){
472           a1[icyl][im] = 0;
473           a2[icyl][im] = 0;
474           for(in=im; in<icyl+1;in++){
475              a1[icyl][im]=a1[icyl][im]+dhhiOverPInverse[icyl][in]*hh0[im][in];
476              a2[icyl][im]=a2[icyl][im]+dhhiOverLambda[icyl][in]*hh0[im][in];
477           }
478           vF11=vF11+a1[icyl][im]*a1[icyl][im];
479           vF12=vF12+a1[icyl][im]*a2[icyl][im];
480           vF22=vF22+a2[icyl][im]*a2[icyl][im];
481        }
482        vF11=vF11+a1[icyl][icyl]*a1[icyl][icyl];
483        vF12=vF12+a1[icyl][icyl]*a2[icyl][icyl];
484        vF22=vF22+a2[icyl][icyl]*a2[icyl][icyl];
485        }
486  
487   // Invert information matrix
488
489     det=( vF11*vF22 - vF12*vF12 ) *vF33 + (vF12*vF23 - vF13*vF22)*vF13
490                                         + (vF12*vF13 - vF11*vF23)*vF23;
491
492     v11 = (vF22*vF33 - vF23*vF23)/det;
493     v22 = (vF11*vF33 - vF13*vF13)/det;
494     v33 = (vF11*vF22 - vF12*vF12)/det;
495     v12 = (vF13*vF23 - vF12*vF33)/det;
496     v13 = (vF12*vF23 - vF13*vF22)/det;
497     v23 = (vF12*vF13 - vF11*vF23)/det;
498   
499     }
500 //_____________________________________________________________________________//
501 void AliFTrackMaker::LogLikelyhood(Int_t idTrack, Double_t pInverse,Double_t lambda)
502 {
503   ///////////////////////////////////////////////
504   //hh           ??                    output  //
505   //hhi          ??                    output  //
506   //idTrack       track type           input   //
507   //pInverse      inverse  momentum    input   //
508   //lambda       polar angle of track  input   //
509   ///////////////////////////////////////////////
510
511  
512   AliFDet *detector = gAliFast->Detector();
513   Int_t nDet = detector->NDet();
514   Int_t nDetActive = detector->NDetActive();
515   Int_t nTwice = nDetActive + nDetActive;
516
517   Double_t    rDet, rDetSQ;
518   Int_t      idet, icyl, im, imc;
519   Double_t    cosLambda, tanLambda, pTotal, pT, rTrack, rTrackSQ;
520   Double_t    beta, overPBeta, rTrackInv, thickCorr, temp1, temp2;
521   Double_t    partMassSQ;
522   Double_t    aShelp[kNMaxDet2], dShelp[kNMaxDet2];
523   Double_t    projXVXT[kNMaxDet2],projYVXT[kNMaxDet2], projZVXT[kNMaxDet2]; 
524   Double_t    proj[kNMaxDet2][kNMaxDet2]; 
525   Double_t    erroScatt[kNMaxDet2], variance[kNMaxDet2][kNMaxDet2];
526   Double_t    erroSQ[kNMaxDet2];
527   Double_t    hh[kNMaxDet2][kNMaxDet2];
528   Double_t    hhi[kNMaxDet2][kNMaxDet2];
529   Double_t    errorVX, errorVY, errorVZ;
530
531   cosLambda = TMath::Cos(lambda);
532   tanLambda = TMath::Tan(lambda);
533   pTotal    = 1.0/pInverse;
534   pT        = pTotal * cosLambda;
535   rTrack    = detector->ConstMag() * pTotal * cosLambda;
536   rTrackSQ  = rTrack * rTrack;
537   partMassSQ= ParticleMass(idTrack)*ParticleMass(idTrack);
538   beta      = pTotal / TMath::Sqrt(partMassSQ+pTotal*pTotal);
539   overPBeta = 1./(pTotal*beta);
540   rTrackInv = 1./rTrack;
541   errorVX   = detector->ErrorVertexX();
542   errorVY   = detector->ErrorVertexY();
543   errorVZ   = detector->ErrorVertexZ();
544
545     
546   erroScatt[0]=0.0;
547   erroScatt[1]=0.0;
548   for(idet=1; idet < nDet; idet++){
549      thickCorr = detector->ThickDet(idet)/TMath::Sqrt(cosLambda*
550                  TMath::Sqrt(1.0-0.25*(detector->RDetSQ(idet)/rTrackSQ)));
551      if(detector->IFlagGas(idet) == 0){
552          thickCorr = thickCorr * (1.3266 + 0.076 * TMath::Log(thickCorr));}
553      thickCorr = overPBeta * thickCorr;
554      erroScatt[idet+1]=thickCorr*thickCorr;
555   }
556
557
558   icyl = 0;
559   for(idet=1; idet<nDet+1; idet++){
560     rDet   = detector->RDet(idet);
561     rDetSQ = rDet*rDet;
562     dShelp[idet] = TMath::Sqrt(4.0*rTrackSQ-rDetSQ);
563     aShelp[idet] = TMath::ASin(rDet/(rTrack+rTrack));
564     if(detector->IFlagDet(idet) > 0) {
565        icyl = icyl + 1;
566        projXVXT[icyl] = rDet * rTrackInv;
567        projXVXT[nDetActive+icyl] = -tanLambda;
568        temp1 = (rTrackSQ + rTrackSQ - rDetSQ)/dShelp[idet];
569        temp2 = rDet/dShelp[idet];
570        projYVXT[icyl] = temp1*rTrackInv;
571        projYVXT[nDetActive+icyl] = tanLambda * temp2;
572        projZVXT[icyl] = 0.0;
573        projZVXT[nDetActive+icyl] = 1.0;
574        proj[icyl][1] = 0.0;
575        proj[nDetActive+icyl][0] = 0.0;
576        proj[nDetActive+icyl][nDet] = 0.0;
577        proj[icyl][nDet] = 0.0;
578        for(im=2; im<idet+1; im++){
579           proj[icyl][im]= (( rDet
580                            *(rTrackSQ+rTrackSQ-detector->RDetSQ(im-1))
581                            - detector->RDet(im-1)*temp1*dShelp[im-1])
582                          /((rTrackSQ + rTrackSQ)*cosLambda));
583           proj[nDetActive+icyl][im]= 0.5 * detector->RDet(im-1)
584                                    * rTrackInv
585                                    * tanLambda * (detector->RDet(im-1)
586                                    - dShelp[im-1]*temp2)/cosLambda;
587           proj[nDetActive+icyl][nDet+im]= (rTrack+rTrack) * (aShelp[idet] - aShelp[im-1])
588              + ( rDet*dShelp[im-1]-detector->RDet(im-1)*dShelp[idet])
589              *  dShelp[im-1] * tanLambda * tanLambda
590                / (dShelp[idet] * (rTrack+rTrack));
591           proj[icyl][nDet+im]= tanLambda 
592                         *  (rDet*detector->RDet(im-1)*dShelp[im-1]
593                         / (rTrackSQ+rTrackSQ)
594                         - (rDetSQ + detector->RDetSQ(im-1)
595                         -  rDetSQ * detector->RDetSQ(im-1)
596                         / (rTrackSQ+rTrackSQ))
597                         / dShelp[idet]);
598        }
599        for(im=idet+1; im < nDet+1; im++){
600           proj[icyl][im] = 0.0;
601           proj[nDetActive+icyl][im] = 0.0;
602           proj[nDetActive+icyl][nDet+im] = 0.0;
603           proj[icyl][nDet+im] = 0.0;
604        }
605        if(detector->IFlagDet(idet) == 1){
606           erroSQ[icyl] = detector->ErrorRPhi(idet);
607           erroSQ[nDetActive+icyl] = detector->ErrorZ(idet);
608        }else{
609           TPCResolution(pT, rDet, lambda);
610           erroSQ[icyl]            = SigmaRPhiSQ();
611           erroSQ[nDetActive+icyl] = SigmaZSQ();
612        }
613        erroSQ[icyl] = erroSQ[icyl] + detector->ErrorR(idet)*temp2*temp2;
614        erroSQ[nDetActive+icyl] =  erroSQ[nDetActive+icyl] 
615                                 + detector->ErrorR(idet)*tanLambda*tanLambda;
616     }
617   }
618     for(icyl=1; icyl<nTwice+1; icyl++){
619       for(im=1; im<icyl+1; im++){
620           variance[icyl][im]=
621                projXVXT[icyl]*projXVXT[im]*errorVX
622               +projYVXT[icyl]*projYVXT[im]*errorVY
623               +projZVXT[icyl]*projZVXT[im]*errorVZ;
624           for(imc=1; imc<nDet+1; imc++){
625              variance[icyl][im]=variance[icyl][im]
626                     +(proj[icyl][imc]*proj[im][imc]
627                     + proj[icyl][nDet+imc]*proj[im][nDet+imc])
628                     * erroScatt[imc];
629           }
630       }
631       variance[icyl][icyl] = variance[icyl][icyl]+erroSQ[icyl];
632     }
633    
634     for(icyl=1; icyl<nTwice+1; icyl++){
635       for(im=icyl; im<nTwice+1; im++){
636           hh[icyl][im]=variance[im][icyl];
637           for(imc=1; imc<icyl;imc++){
638                hh[icyl][im]=hh[icyl][im]-hh[imc][icyl]*hh[imc][im];
639             }
640             if(im == icyl){
641                hh[icyl][im] = TMath::Sqrt(hh[icyl][im]);
642             }  else {
643                hh[icyl][im] = hh[icyl][im]/hh[icyl][icyl];
644             }
645           }
646     }
647        
648     for(icyl=1; icyl<nTwice+1; icyl++){
649         hhi[icyl][icyl] = 1.0 / hh[icyl][icyl];
650         for(im=1; im<icyl; im++){
651            hhi[icyl][im] = 0.0;
652            for(imc=im; imc<icyl; imc++){
653               hhi[icyl][im] = hhi[icyl][im]-hh[imc][icyl]*hhi[imc][im];
654            }
655            hhi[icyl][im] = hhi[icyl][im]*hhi[icyl][icyl];
656        }
657     }
658     
659     for(icyl=1; icyl<nTwice+1; icyl++){
660       for(im=1; im<nTwice+1; im++){
661           SetHH(icyl,im,hh[icyl][im]);
662           SetHHI(icyl,im,hhi[icyl][im]);
663       }
664     }
665
666   
667 }
668 //_____________________________________________________________________________
669 // translation of routine tpc_resolution of res.f
670 //_____________________________________________________________________________
671 void AliFTrackMaker::TPCResolution(Double_t pTransv, Double_t radiPad, Double_t lambda)
672 {
673   ///////////////////////////////////////////////
674   //sigmaRPhiSQ  resolution in r-phi   output  //
675   //sigmaZSQ     resolution in z       output  //
676   //pTransv      transverse momentum   input   //
677   //radiPad      radius of pad row     input   //
678   //lambda       polar angle of track  input   //
679   //
680   //units: cm, GeV/c, radian                   //
681   //parametrisation of TPC resolution          //
682   //version of 03.07.1995                      //
683   //source: Marek Kowalski, Karel Safarik      //
684   ///////////////////////////////////////////////
685
686   Double_t aRCoeff=0.41818e-2;
687   Double_t bRCoeff=0.17460e-4;
688   Double_t cRCoeff=0.30993e-8;
689   Double_t dRCoeff=0.41061e-6;
690   Double_t aZCoeff=0.39610e-2;
691   Double_t bZCoeff=0.22443e-4;
692   Double_t cZCoeff=0.51504e-1;
693
694   Double_t sigmaRPhiSQ;
695   Double_t sigmaZSQ;
696
697   sigmaRPhiSQ = aRCoeff - bRCoeff * radiPad * TMath::Tan(lambda)+
698                (cRCoeff * (radiPad/pTransv) + dRCoeff) * radiPad/pTransv;
699
700   sigmaZSQ    = aZCoeff - bZCoeff * radiPad * TMath::Tan(lambda)+
701                 cZCoeff * TMath::Tan(lambda)*TMath::Tan(lambda);
702
703   if(sigmaRPhiSQ < 1.0e-6 ) sigmaRPhiSQ = 1.0e-6;
704   if(sigmaZSQ    < 1.0e-6 ) sigmaZSQ    = 1.0e-6;
705
706   sigmaRPhiSQ =   (TMath::Sqrt(sigmaRPhiSQ) + 0.005)
707                 * (TMath::Sqrt(sigmaRPhiSQ) + 0.005);
708   sigmaZSQ    =   (TMath::Sqrt(sigmaZSQ)    + 0.005)
709                 * (TMath::Sqrt(sigmaZSQ)    + 0.005);
710
711   SetSigmaRPhiSQ(sigmaRPhiSQ);
712   SetSigmaZSQ(sigmaZSQ); 
713
714   
715 }
716
717 //_____________________________________________________________________________
718 // returns the mass given particle ID 
719 //-----------------------------------------------------------------------------
720 Double_t AliFTrackMaker::ParticleMass(Int_t idTrack)
721 {
722   Double_t mass = 0.0;
723
724        if(idTrack == 2){ mass = fPionMass;}
725   else if(idTrack == 3){ mass = fKaonMass;}
726   else if(idTrack == 1) {mass = fElectronMass;}
727   else if(idTrack == 4) {mass = fProtonMass;}
728
729   return mass;
730
731 }
732
733 //_____________________________________________________________________________
734 // returns the rapidity given particle pT, pz 
735 //-----------------------------------------------------------------------------
736 Double_t AliFTrackMaker::Rapidity(Double_t pt, Double_t pz)
737 {
738 //   Compute rapidity
739
740    Double_t etalog = TMath::Log((TMath::Sqrt(pt*pt + pz*pz) + TMath::Abs(pz))/pt);
741    if (pz < 0 ) return -TMath::Abs(etalog);
742    else         return  TMath::Abs(etalog);
743 }
744
745 //_____________________________________________________________________________
746 // returns the phi angle given particle px, py 
747 //-----------------------------------------------------------------------------
748 Double_t AliFTrackMaker::Angle(Double_t x, Double_t y)
749 {
750 //   Compute phi angle of particle
751 // ... this is a copy of function ULANGL
752 //  .. sign(a,b) = -abs(a) if b <  0
753 //               =  abs(a) if b >= 0
754
755    Double_t angle = 0;
756    Double_t r = TMath::Sqrt(x*x + y*y);
757    if (r < 1e-20) return angle;
758    if (TMath::Abs(x)/r < 0.8) {
759       angle = TMath::Sign((Double_t)TMath::Abs(TMath::ACos(x/r)), y);
760    } else {
761       angle = TMath::ASin(y/r);
762       if (x < 0 ) {
763          if(angle >= 0) angle =  kPi - angle;
764          else           angle = -kPi - angle;
765       }
766    }
767    return angle;
768 }
769 //_____________________________________________________________________________
770 Int_t AliFTrackMaker::Charge(Int_t kf)
771 {
772 //...this is copy of function LUCHGE 
773 //...Purpose: to give three times the charge for a particle/parton. 
774
775   static Int_t kchg[500] = { -1,2,-1,2,-1,2,-1,2,0,0,-3,0,-3,0,-3,0,-3,0,
776         0,0,0,0,0,3,0,0,0,0,0,0,0,0,0,3,0,0,3,0,-1,0,0,0,0,0,0,0,0,0,0,0,
777        0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
778        2,-1,2,-1,2,3,0,0,0,0,0,0,0,0,0,0,0,3,0,3,3,0,3,0,3,0,3,0,0,0,0,0,
779        0,0,0,0,0,3,0,3,3,0,3,0,3,0,3,0,0,0,0,0,0,0,0,0,0,3,0,3,3,0,3,0,3,
780        0,3,0,0,0,0,0,0,0,0,0,0,3,0,3,3,0,3,0,3,0,3,0,0,0,0,0,0,0,0,0,0,3,
781        0,3,3,0,3,0,3,0,3,0,0,0,0,0,0,0,0,0,0,3,0,3,3,0,3,0,3,0,3,0,0,0,0,
782        0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
783        0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
784        3,0,3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,3,0,
785        0,3,0,0,0,0,0,0,0,0,-3,0,0,0,0,0,0,0,0,3,0,-3,0,3,-3,0,0,0,3,6,0,
786        3,0,0,0,0,0,-3,0,3,-3,0,-3,0,0,0,0,-3,0,3,6,-3,0,3,-3,0,-3,0,3,6,
787        0,3,0,0,0,0,0,-3,0,3,-3,0,-3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
788        0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
789        0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
790        0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 };
791
792 //    extern integer kfcomp_(integer *);
793   Int_t ipower;
794   Int_t ret = 0;
795   Int_t kfa = TMath::Abs(kf);
796   Int_t kc  = Compress(kfa);
797
798 //...Initial values. Simple case of direct readout. 
799   if (kc == 0) {
800   } else if (kfa <= 100 || kc <= 80 || kc > 100) {
801      ret = kchg[kc-1];
802
803 // ...Construction from quark content for heavy meson, diquark, baryon.
804   } else if (kfa/1000 % 10 == 0) {
805         ipower = kfa/100 % 10;
806         ret = (kchg[kfa / 100 % 10 - 1] - kchg[kfa/10 % 10 - 1])*Int_t(TMath::Power(-1, ipower));
807   } else if (kfa / 10 % 10 == 0) {
808         ret = kchg[kfa/1000 % 10 - 1] + kchg[kfa/100 % 10 - 1];
809   } else {
810         ret = kchg[kfa/1000 % 10 - 1] + kchg[kfa/100 % 10 - 1] + kchg[kfa/10 % 10 - 1];
811   }
812
813 // ...Add on correct sign.
814   if (kf > 0) return ret;
815   else        return -ret;
816 }
817 //_____________________________________________________________________________
818 Int_t AliFTrackMaker::Compress(Int_t kf)
819 {
820 //...this is copy of function LUCOMP 
821 //...Purpose: to compress the standard KF codes for use in mass and decay 
822 //...arrays; also to check whether a given code actually is defined.
823 //     from BLOCK LUDATA
824   static Int_t  kchg[500] = { 1,1,1,1,1,1,1,1,0,0,1,1,1,1,1,1,1,1,0,0,0,0,
825         0,1,0,0,0,0,0,0,0,0,0,1,0,0,1,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
826         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,1,1,1,1,1,
827         1,1,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,1,
828         1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,0,0,0,0,
829         0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,
830         1,1,1,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,
831         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
832         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,
833         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,1,0,1,1,0,0,0,0,
834         0,0,1,0,1,1,0,0,0,0,0,0,1,1,0,1,1,1,1,1,0,1,1,1,1,1,1,0,0,0,0,1,1,
835         1,1,1,1,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,1,1,1,1,1,
836         1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
837         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
838         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
839         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 };
840   static Int_t kftab[25] = { 211,111,221,311,321,130,310,213,113,223,313,
841             323,2112,2212,210,2110,2210,110,220,330,440,30443,30553,0,0 };
842   static Int_t kctab[25] = { 101,111,112,102,103,221,222,121,131,132,122,
843             123,332,333,281,282,283,284,285,286,287,231,235,0,0 };
844
845   Int_t ret = 0;
846   Int_t kfla, kflb, kflc, kflr, kfls, kfa, ikf;
847
848   kfa = TMath::Abs(kf);
849 //...Simple cases: direct translation or table.
850   if (kfa == 0 || kfa >= 100000) {
851      return ret;
852   } else if (kfa <= 100) {
853      ret = kfa;
854      if (kf < 0 && kchg[kfa - 1] == 0)  ret = 0;
855      return ret;
856   } else {
857      for (ikf = 1; ikf <= 23; ++ikf) {
858         if (kfa == kftab[ikf-1]) {
859            ret = kctab[ikf-1];
860            if (kf < 0 && kchg[ret-1] == 0)  ret = 0;
861            return ret;
862         }
863      }
864   }
865 // ...Subdivide KF code into constituent pieces.
866   kfla = kfa / 1000%10;
867   kflb = kfa / 100%10;
868   kflc = kfa / 10%10;
869   kfls = kfa%10;
870   kflr = kfa / 10000%10;
871 // ...Mesons.
872   if (kfa - kflr*10000 < 1000) {
873      if (kflb == 0 || kflb == 9 || kflc == 0 || kflc == 9) {
874      } else if (kflb < kflc) {
875      } else if (kf < 0 && kflb == kflc) {
876      } else if (kflb == kflc) {
877         if (kflr == 0 && kfls == 1) {        ret = kflb + 110;
878         } else if (kflr == 0 && kfls == 3) { ret = kflb + 130;
879         } else if (kflr == 1 && kfls == 3) { ret = kflb + 150;
880         } else if (kflr == 1 && kfls == 1) { ret = kflb + 170;
881         } else if (kflr == 2 && kfls == 3) { ret = kflb + 190;
882         } else if (kflr == 0 && kfls == 5) { ret = kflb + 210;
883         }
884      } else if (kflb <= 5) {
885         if (kflr == 0 && kfls == 1) {        ret = (kflb-1)*(kflb-2)/2 + 100 + kflc;
886         } else if (kflr == 0 && kfls == 3) { ret = (kflb-1)*(kflb-2)/2 + 120 + kflc;
887         } else if (kflr == 1 && kfls == 3) { ret = (kflb-1)*(kflb-2)/2 + 140 + kflc;
888         } else if (kflr == 1 && kfls == 1) { ret = (kflb-1)*(kflb-2)/2 + 160 + kflc;
889         } else if (kflr == 2 && kfls == 3) { ret = (kflb-1)*(kflb-2)/2 + 180 + kflc;
890         } else if (kflr == 0 && kfls == 5) { ret = (kflb-1)*(kflb-2)/2 + 200 + kflc;
891         }
892      } else if (kfls == 1 && kflr <= 1 || kfls == 3 && kflr <= 2 || kfls == 5 && kflr == 0) {
893         ret = kflb + 80;
894      }
895 // ...Diquarks.
896   } else if ((kflr == 0 || kflr == 1) && kflc == 0) {
897      if (kfls != 1 && kfls != 3) {
898      } else if (kfla == 9 || kflb == 0 || kflb == 9) {
899      } else if (kfla < kflb) {
900      } else if (kfls == 1 && kfla == kflb) {
901      } else { ret = 90;
902      }
903 // ...Spin 1/2 baryons.
904   } else if (kflr == 0 && kfls == 2) {
905      if (kfla == 9 || kflb == 0 || kflb == 9 || kflc == 9) {
906      } else if (kfla <= kflc || kfla < kflb) {
907      } else if (kfla >= 6 || kflb >= 4 || kflc >= 4) {
908          ret = kfla + 80;
909      } else if (kflb < kflc) {
910          ret = (kfla+1)*kfla*(kfla-1)/6 + 300 + kflc*(kflc-1)/2 + kflb;
911      } else {
912          ret = (kfla+1)*kfla*(kfla-1)/6 + 330 + kflb*(kflb-1)/2 + kflc;
913      }
914 // ...Spin 3/2 baryons.
915   } else if (kflr == 0 && kfls == 4) {
916      if (kfla == 9 || kflb == 0 || kflb == 9 || kflc == 9) {
917      } else if (kfla < kflb || kflb < kflc) {
918      } else if (kfla >= 6 || kflb >= 4) {
919          ret = kfla + 80;
920      } else {
921          ret = (kfla+1)*kfla*(kfla-1) / 6 + 360 + kflb*(kflb -1) / 2 + kflc;
922      }
923   }
924     return ret;
925 }
926
927 //_____________________________________________________________________________
928 // TEST JOB: Calculate tracks resolution
929 //_____________________________________________________________________________
930 void AliFTrackMaker::MakeTest(Int_t n)
931 {
932   Double_t v11, v22, v33, v12, v13, v23;
933   Int_t iFlag;
934   Int_t idTrack;
935   Double_t  pTStart, pT, eta;
936
937   Double_t sumDPop,sumDDip,sumDPhi;
938   Double_t isum,fm;
939   Double_t pTotal,partMassSQ,beta,lambda;
940   Double_t dPop,dLop,dDip,dPhi,rho12,rho13,rho23;
941   Double_t dPPStrag,dPPTot=0;
942   //  Double_t resol1[1001][11],resol2[10001][11],resol3[1001][11],
943   //           resol4[1001][11],resol5[10001][11]
944   Double_t store1[1001],store2[10001],store3[1001],
945            store4[1001],store5[10001];
946
947
948   idTrack  = 2;
949   pTStart = 0.07;
950   for(Int_t istep=1; istep<n; istep++){
951       if(istep < 100 && istep >  20) istep = istep -1 +  5;
952       if(istep < 500 && istep > 100) istep = istep -1 + 25;
953       if(istep <1000 && istep > 500) istep = istep -1 + 100;
954       pT = pTStart + 0.01*istep;
955       eta = - 0.044;
956       sumDPop = 0;
957       sumDDip = 0;
958       sumDPhi = 0;
959       isum    = 0;
960       for(Int_t in=1; in<11; in++){
961          eta    = eta + 0.088;
962          lambda = kPiHalf -2.0*TMath::ATan(TMath::Exp(-eta));
963          pTotal = pT / TMath::Cos(lambda);
964          if(idTrack == 1){
965            dPPStrag = 0.055 /pT;}
966          else{
967            partMassSQ = ParticleMass(idTrack)*ParticleMass(idTrack);
968            beta       = pTotal/ TMath::Sqrt(pTotal*pTotal + partMassSQ); 
969            dPPStrag   = 0.04/(pT*TMath::Power(beta,2.6666666667));
970          }
971          ErrorMatrix(idTrack,pT,eta, v11, v22, v33, v12, v13, v23, iFlag);
972          if(iFlag == 1){
973             dLop   = TMath::Sqrt(v11);
974             dDip   = TMath::Sqrt(v22);
975             dPhi   = TMath::Sqrt(v33);
976             rho12  = v12/(dLop*dDip);
977             rho13  = v13/(dLop*dPhi);
978             rho23  = v23/(dDip*dPhi);
979             dPop   = 100. *dLop * pTotal;
980             dDip   = 1000. * dDip;
981             dPhi   = 1000. * dPhi;
982             dPPTot = TMath::Sqrt(dPop*dPop + dPPStrag*dPPStrag);
983             //            resol1[istep][in] = dPop;
984             //            resol2[istep][in] = dDip;
985             //            resol3[istep][in] = dPhi;
986             //            resol4[istep][in] = dPPTot;
987             //            resol5[istep][in] = dPPStrag;
988             sumDPop = sumDPop + dPop;
989             sumDDip = sumDDip + dDip;
990             sumDPhi = sumDPhi + dPhi;
991             isum    = isum + 1;}
992          else{
993             printf("%20s %10.5f %10.5f %20s\n","pT,eta",pT,eta,"cannot smear");
994          }
995        }
996        if(isum > 0){
997          dPop   = sumDPop/isum;
998          dDip   = sumDDip/isum;
999          dPhi   = sumDPhi/isum;
1000          dPPTot = TMath::Sqrt(dPop*dPop + dPPStrag*dPPStrag);}
1001        else{
1002          dPop   = 0;
1003          dDip   = 0;
1004          dPhi   = 0;
1005        }
1006        store1[istep] = dPop;
1007        store2[istep] = dDip;
1008        store3[istep] = dPhi;
1009        store4[istep] = dPPTot;
1010        store5[istep] = dPPStrag;
1011        if(istep > 20 ){
1012           Int_t im = 5;
1013           if(istep > 100) {im =  25;}
1014           if(istep > 500) {im = 100;}
1015           fm = 1./(1.*im);
1016           for(Int_t ist=1; ist<im; ist++){
1017               //               for(Int_t in=1; in < 11; in++){
1018               //                   resol1[istep-im+ist][in] = resol1[istep-im][in]+
1019               //                         ist*fm*(resol1[istep][in]-resol1[istep-im][in]);
1020               //                   resol2[istep-im+ist][in] = resol2[istep-im][in]+
1021               //                         ist*fm*(resol2[istep][in]-resol2[istep-im][in]);
1022               //                   resol3[istep-im+ist][in] = resol3[istep-im][in]+
1023               //                         ist*fm*(resol3[istep][in]-resol3[istep-im][in]);
1024               //                   resol4[istep-im+ist][in] = resol4[istep-im][in]+
1025               //                         ist*fm*(resol4[istep][in]-resol4[istep-im][in]);
1026               //                   resol5[istep-im+ist][in] = resol5[istep-im][in]+
1027               //                         ist*fm*(resol5[istep][in]-resol5[istep-im][in]);
1028               //             }
1029             store1[istep-im+ist]=store1[istep-im]+
1030                                  ist*fm*(store1[istep]-store1[istep-im]);
1031             store2[istep-im+ist]=store2[istep-im]+
1032                                  ist*fm*(store2[istep]-store2[istep-im]);
1033             store3[istep-im+ist]=store3[istep-im]+
1034                                  ist*fm*(store3[istep]-store3[istep-im]);
1035             store4[istep-im+ist]=store4[istep-im]+
1036                                  ist*fm*(store4[istep]-store4[istep-im]);
1037             store5[istep-im+ist]=store5[istep-im]+
1038                                  ist*fm*(store5[istep]-store5[istep-im]);
1039             // Fill control histograms
1040             fResID1Test->Fill(pTStart + 0.01*(istep-im+ist),store1[istep-im+ist]);
1041             fResID2Test->Fill(pTStart + 0.01*(istep-im+ist),store2[istep-im+ist]);
1042             fResID3Test->Fill(pTStart + 0.01*(istep-im+ist),store3[istep-im+ist]);
1043             fResID4Test->Fill(pTStart + 0.01*(istep-im+ist),store4[istep-im+ist]);
1044             fResID5Test->Fill(pTStart + 0.01*(istep-im+ist),store5[istep-im+ist]);
1045           }
1046           printf("%10s %10d %20.15f %20.15f %20.15f %20.15f %20.15f \n", 
1047                        "TestTrack:",istep,store1[istep],store2[istep],store3[istep],
1048                                     store4[istep],store5[istep]);
1049        } else {     
1050           printf("%10s %10d %20.15f %20.15f %20.15f %20.15f %20.15f \n", 
1051                        "TestTrack:",istep,store1[istep],store2[istep],store3[istep],
1052                                     store4[istep],store5[istep]);
1053           fResID1Test->Fill(pT,store1[istep]);
1054           fResID2Test->Fill(pT,store2[istep]);
1055           fResID3Test->Fill(pT,store3[istep]);
1056           fResID4Test->Fill(pT,store4[istep]);
1057           fResID5Test->Fill(pT,store5[istep]);
1058        }
1059   }
1060 }
1061 //_____________________________________________________________________________