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 **************************************************************************/
18 ///////////////////////////////////////////////////////////////////////////////
20 // Time Projection Chamber //
21 // This class contains the basic functions for the Time Projection Chamber //
22 // detector. Functions specific to one particular geometry are //
23 // contained in the derived classes //
27 <img src="picts/AliTPCClass.gif">
32 ///////////////////////////////////////////////////////////////////////////////
36 #include <Riostream.h>
40 #include <TGeometry.h>
41 #include <TInterpreter.h>
45 #include <TObjectTable.h>
46 #include <TParticle.h>
53 #include <TVirtualMC.h>
55 #include "AliArrayBranch.h"
56 #include "AliClusters.h"
57 #include "AliComplexCluster.h"
58 #include "AliDigits.h"
60 #include "AliPoints.h"
62 #include "AliRunLoader.h"
63 #include "AliSimDigits.h"
66 #include "AliTPCClustersArray.h"
67 #include "AliTPCClustersRow.h"
68 #include "AliTPCDigitsArray.h"
69 #include "AliTPCLoader.h"
70 #include "AliTPCPRF2D.h"
71 #include "AliTPCParamSR.h"
72 #include "AliTPCRF1D.h"
73 #include "AliTPCTrackHits.h"
74 #include "AliTPCTrackHitsV2.h"
75 #include "AliTPCcluster.h"
76 #include "AliTrackReference.h"
81 //_____________________________________________________________________________
82 // helper class for fast matrix and vector manipulation - no range checking
83 // origin - Marian Ivanov
85 class AliTPCFastMatrix : public TMatrix {
87 AliTPCFastMatrix(Int_t row_lwb, Int_t row_upb, Int_t col_lwb, Int_t col_upb);
88 inline Float_t & UncheckedAt(Int_t rown, Int_t coln) const {return (fIndex[coln])[rown];} //fast acces
89 inline Float_t UncheckedAtFast(Int_t rown, Int_t coln) const {return (fIndex[coln])[rown];} //fast acces
92 AliTPCFastMatrix::AliTPCFastMatrix(Int_t row_lwb, Int_t row_upb, Int_t col_lwb, Int_t col_upb):
93 TMatrix(row_lwb, row_upb,col_lwb,col_upb)
96 //_____________________________________________________________________________
97 class AliTPCFastVector : public TVector {
99 AliTPCFastVector(Int_t size);
100 virtual ~AliTPCFastVector(){;}
101 inline Float_t & UncheckedAt(Int_t index) const {return fElements[index];} //fast acces
105 AliTPCFastVector::AliTPCFastVector(Int_t size):TVector(size){
108 //_____________________________________________________________________________
112 // Default constructor
123 fHitType = 2; //default CONTAINERS - based on ROOT structure
130 //_____________________________________________________________________________
131 AliTPC::AliTPC(const char *name, const char *title)
132 : AliDetector(name,title)
135 // Standard constructor
139 // Initialise arrays of hits and digits
140 fHits = new TClonesArray("AliTPChit", 176);
141 gAlice->AddHitList(fHits);
146 fTrackHits = new AliTPCTrackHitsV2;
147 fTrackHits->SetHitPrecision(0.002);
148 fTrackHits->SetStepPrecision(0.003);
149 fTrackHits->SetMaxDistance(100);
151 fTrackHitsOld = new AliTPCTrackHits; //MI - 13.09.2000
152 fTrackHitsOld->SetHitPrecision(0.002);
153 fTrackHitsOld->SetStepPrecision(0.003);
154 fTrackHitsOld->SetMaxDistance(100);
161 // Initialise counters
167 // Initialise color attributes
168 SetMarkerColor(kYellow);
171 // Set TPC parameters
175 if (!strcmp(title,"Default")) {
176 fTPCParam = new AliTPCParamSR;
178 cerr<<"AliTPC warning: in Config.C you must set non-default parameters\n";
184 //_____________________________________________________________________________
195 delete fTrackHits; //MI 15.09.2000
196 delete fTrackHitsOld; //MI 10.12.2001
197 if (fNoiseTable) delete [] fNoiseTable;
201 //_____________________________________________________________________________
202 void AliTPC::AddHit(Int_t track, Int_t *vol, Float_t *hits)
205 // Add a hit to the list
207 // TClonesArray &lhits = *fHits;
208 // new(lhits[fNhits++]) AliTPChit(fIshunt,track,vol,hits);
210 TClonesArray &lhits = *fHits;
211 new(lhits[fNhits++]) AliTPChit(fIshunt,track,vol,hits);
214 AddHit2(track,vol,hits);
217 //_____________________________________________________________________________
218 void AliTPC::BuildGeometry()
222 // Build TPC ROOT TNode geometry for the event display
227 const int kColorTPC=19;
228 char name[5], title[25];
229 const Double_t kDegrad=TMath::Pi()/180;
230 const Double_t kRaddeg=180./TMath::Pi();
233 Float_t innerOpenAngle = fTPCParam->GetInnerAngle();
234 Float_t outerOpenAngle = fTPCParam->GetOuterAngle();
236 Float_t innerAngleShift = fTPCParam->GetInnerAngleShift();
237 Float_t outerAngleShift = fTPCParam->GetOuterAngleShift();
239 Int_t nLo = fTPCParam->GetNInnerSector()/2;
240 Int_t nHi = fTPCParam->GetNOuterSector()/2;
242 const Double_t kloAng = (Double_t)TMath::Nint(innerOpenAngle*kRaddeg);
243 const Double_t khiAng = (Double_t)TMath::Nint(outerOpenAngle*kRaddeg);
244 const Double_t kloAngSh = (Double_t)TMath::Nint(innerAngleShift*kRaddeg);
245 const Double_t khiAngSh = (Double_t)TMath::Nint(outerAngleShift*kRaddeg);
248 const Double_t kloCorr = 1/TMath::Cos(0.5*kloAng*kDegrad);
249 const Double_t khiCorr = 1/TMath::Cos(0.5*khiAng*kDegrad);
255 // Get ALICE top node
258 nTop=gAlice->GetGeometry()->GetNode("alice");
262 rl = fTPCParam->GetInnerRadiusLow();
263 ru = fTPCParam->GetInnerRadiusUp();
267 sprintf(name,"LS%2.2d",i);
269 sprintf(title,"TPC low sector %3d",i);
272 tubs = new TTUBS(name,title,"void",rl*kloCorr,ru*kloCorr,250.,
273 kloAng*(i-0.5)+kloAngSh,kloAng*(i+0.5)+kloAngSh);
274 tubs->SetNumberOfDivisions(1);
276 nNode = new TNode(name,title,name,0,0,0,"");
277 nNode->SetLineColor(kColorTPC);
283 rl = fTPCParam->GetOuterRadiusLow();
284 ru = fTPCParam->GetOuterRadiusUp();
287 sprintf(name,"US%2.2d",i);
289 sprintf(title,"TPC upper sector %d",i);
291 tubs = new TTUBS(name,title,"void",rl*khiCorr,ru*khiCorr,250,
292 khiAng*(i-0.5)+khiAngSh,khiAng*(i+0.5)+khiAngSh);
293 tubs->SetNumberOfDivisions(1);
295 nNode = new TNode(name,title,name,0,0,0,"");
296 nNode->SetLineColor(kColorTPC);
302 //_____________________________________________________________________________
303 Int_t AliTPC::DistancetoPrimitive(Int_t , Int_t )
306 // Calculate distance from TPC to mouse on the display
312 void AliTPC::Clusters2Tracks()
314 //-----------------------------------------------------------------
315 // This is a track finder.
316 //-----------------------------------------------------------------
317 Error("Clusters2Tracks",
318 "Dummy function ! Call AliTPCtracker::Clusters2Tracks(...) instead !");
321 //_____________________________________________________________________________
322 void AliTPC::CreateMaterials()
324 //-----------------------------------------------
325 // Create Materials for for TPC simulations
326 //-----------------------------------------------
328 //-----------------------------------------------------------------
329 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
330 //-----------------------------------------------------------------
332 Int_t iSXFLD=gAlice->Field()->Integ();
333 Float_t sXMGMX=gAlice->Field()->Max();
335 Float_t amat[5]; // atomic numbers
336 Float_t zmat[5]; // z
337 Float_t wmat[5]; // proportions
343 //***************** Gases *************************
345 //-------------------------------------------------
347 //-------------------------------------------------
358 AliMaterial(20,"Ne",amat[0],zmat[0],density,999.,999.);
368 AliMaterial(21,"Ar",amat[0],zmat[0],density,999.,999.);
371 //--------------------------------------------------------------
373 //--------------------------------------------------------------
390 amol[0] = amat[0]*wmat[0]+amat[1]*wmat[1];
392 AliMixture(10,"CO2",amat,zmat,density,-2,wmat);
407 amol[1] = amat[0]*wmat[0]+amat[1]*wmat[1];
409 AliMixture(11,"CF4",amat,zmat,density,-2,wmat);
425 amol[2] = amat[0]*wmat[0]+amat[1]*wmat[1];
427 AliMixture(12,"CH4",amat,zmat,density,-2,wmat);
429 //----------------------------------------------------------------
430 // gases - mixtures, ID >= 20 pure gases, <= 10 ID < 20 -compounds
431 //----------------------------------------------------------------
437 Float_t rho,absl,X0,buf[1];
441 for(nc = 0;nc<fNoComp;nc++)
444 // retrive material constants
446 gMC->Gfmate((*fIdmate)[fMixtComp[nc]],namate,a,z,rho,X0,absl,buf,nbuf);
451 Int_t nnc = (fMixtComp[nc]>=20) ? fMixtComp[nc]%20 : fMixtComp[nc]%10;
453 am += fMixtProp[nc]*((fMixtComp[nc]>=20) ? apure[nnc] : amol[nnc]);
454 density += fMixtProp[nc]*rho; // density of the mixture
458 // mixture proportions by weight!
460 for(nc = 0;nc<fNoComp;nc++)
463 Int_t nnc = (fMixtComp[nc]>=20) ? fMixtComp[nc]%20 : fMixtComp[nc]%10;
465 wmat[nc] = fMixtProp[nc]*((fMixtComp[nc]>=20) ?
466 apure[nnc] : amol[nnc])/am;
470 // Drift gases 1 - nonsensitive, 2 - sensitive
472 AliMixture(31,"Drift gas 1",amat,zmat,density,fNoComp,wmat);
473 AliMixture(32,"Drift gas 2",amat,zmat,density,fNoComp,wmat);
482 AliMaterial(24,"Air",amat[0],zmat[0],density,999.,999.);
485 //----------------------------------------------------------------------
487 //----------------------------------------------------------------------
509 AliMixture(34,"Kevlar",amat,zmat,density,-4,wmat);
531 AliMixture(35,"NOMEX",amat,zmat,density,-4,wmat);
549 AliMixture(36,"Makrolon",amat,zmat,density,-3,wmat);
567 AliMixture(37, "Mylar",amat,zmat,density,-3,wmat);
569 // SiO2 - used later for the glass fiber
581 AliMixture(38,"SiO2",amat,zmat,2.2,-2,wmat); //SiO2 - quartz (rho=2.2)
590 AliMaterial(40,"Al",amat[0],zmat[0],density,999.,999.);
599 AliMaterial(41,"Si",amat[0],zmat[0],density,999.,999.);
608 AliMaterial(42,"Cu",amat[0],zmat[0],density,999.,999.);
626 AliMixture(43, "Tedlar",amat,zmat,density,-3,wmat);
645 AliMixture(44,"Plexiglas",amat,zmat,density,-3,wmat);
647 // Epoxy - C14 H20 O3
664 AliMixture(45,"Epoxy",amat,zmat,density,-3,wmat);
672 AliMaterial(46,"C",amat[0],zmat[0],density,999.,999.);
676 gMC->Gfmate((*fIdmate)[45],namate,amat[1],zmat[1],rho,X0,absl,buf,nbuf);
680 wmat[0]=0.644; // by weight!
683 density=0.5*(1.25+2.265);
685 AliMixture(47,"Cfiber",amat,zmat,density,2,wmat);
689 gMC->Gfmate((*fIdmate)[38],namate,amat[0],zmat[0],rho,X0,absl,buf,nbuf);
691 wmat[0]=0.725; // by weight!
696 AliMixture(39,"G10",amat,zmat,density,2,wmat);
701 //----------------------------------------------------------
702 // tracking media for gases
703 //----------------------------------------------------------
705 AliMedium(0, "Air", 24, 0, iSXFLD, sXMGMX, 10., 999., .1, .01, .1);
706 AliMedium(1, "Drift gas 1", 31, 0, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
707 AliMedium(2, "Drift gas 2", 32, 1, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
708 AliMedium(3,"CO2",10,0, iSXFLD, sXMGMX, 10., 999.,.1, .001, .001);
710 //-----------------------------------------------------------
711 // tracking media for solids
712 //-----------------------------------------------------------
714 AliMedium(4,"Al",40,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
715 AliMedium(5,"Kevlar",34,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
716 AliMedium(6,"Nomex",35,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
717 AliMedium(7,"Makrolon",36,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
718 AliMedium(8,"Mylar",37,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
719 AliMedium(9,"Tedlar",43,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
720 AliMedium(10,"Cu",42,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
721 AliMedium(11,"Si",41,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
722 AliMedium(12,"G10",39,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
723 AliMedium(13,"Plexiglas",44,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
724 AliMedium(14,"Epoxy",45,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
725 AliMedium(15,"Cfiber",47,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
729 void AliTPC::GenerNoise(Int_t tablesize)
732 //Generate table with noise
739 if (fNoiseTable) delete[] fNoiseTable;
740 fNoiseTable = new Float_t[tablesize];
741 fNoiseDepth = tablesize;
742 fCurrentNoise =0; //!index of the noise in the noise table
744 Float_t norm = fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac();
745 for (Int_t i=0;i<tablesize;i++) fNoiseTable[i]= gRandom->Gaus(0,norm);
748 Float_t AliTPC::GetNoise()
750 // get noise from table
751 // if ((fCurrentNoise%10)==0)
752 // fCurrentNoise= gRandom->Rndm()*fNoiseDepth;
753 if (fCurrentNoise>=fNoiseDepth) fCurrentNoise=0;
754 return fNoiseTable[fCurrentNoise++];
755 //gRandom->Gaus(0, fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac());
759 Bool_t AliTPC::IsSectorActive(Int_t sec)
762 // check if the sector is active
763 if (!fActiveSectors) return kTRUE;
764 else return fActiveSectors[sec];
767 void AliTPC::SetActiveSectors(Int_t * sectors, Int_t n)
769 // activate interesting sectors
770 SetTreeAddress();//just for security
771 if (fActiveSectors) delete [] fActiveSectors;
772 fActiveSectors = new Bool_t[fTPCParam->GetNSector()];
773 for (Int_t i=0;i<fTPCParam->GetNSector();i++) fActiveSectors[i]=kFALSE;
774 for (Int_t i=0;i<n;i++)
775 if ((sectors[i]>=0) && sectors[i]<fTPCParam->GetNSector()) fActiveSectors[sectors[i]]=kTRUE;
779 void AliTPC::SetActiveSectors(Int_t flag)
782 // activate sectors which were hitted by tracks
784 SetTreeAddress();//just for security
785 if (fHitType==0) return; // if Clones hit - not short volume ID information
786 if (fActiveSectors) delete [] fActiveSectors;
787 fActiveSectors = new Bool_t[fTPCParam->GetNSector()];
789 for (Int_t i=0;i<fTPCParam->GetNSector();i++) fActiveSectors[i]=kTRUE;
792 for (Int_t i=0;i<fTPCParam->GetNSector();i++) fActiveSectors[i]=kFALSE;
796 Fatal("SetActiveSectors","Can not find TreeH in folder");
799 if (fHitType>1) branch = TreeH()->GetBranch("TPC2");
800 else branch = TreeH()->GetBranch("TPC");
801 Stat_t ntracks = TreeH()->GetEntries();
802 // loop over all hits
803 cout<<"\nAliTPC::SetActiveSectors(): Got "<<ntracks<<" tracks\n";
805 for(Int_t track=0;track<ntracks;track++)
809 if (fTrackHits && fHitType&4) {
810 TBranch * br1 = TreeH()->GetBranch("fVolumes");
811 TBranch * br2 = TreeH()->GetBranch("fNVolumes");
812 br1->GetEvent(track);
813 br2->GetEvent(track);
814 Int_t *volumes = fTrackHits->GetVolumes();
815 for (Int_t j=0;j<fTrackHits->GetNVolumes(); j++)
816 fActiveSectors[volumes[j]]=kTRUE;
820 if (fTrackHitsOld && fHitType&2) {
821 TBranch * br = TreeH()->GetBranch("fTrackHitsInfo");
823 AliObjectArray * ar = fTrackHitsOld->fTrackHitsInfo;
824 for (UInt_t j=0;j<ar->GetSize();j++){
825 fActiveSectors[((AliTrackHitsInfo*)ar->At(j))->fVolumeID] =kTRUE;
835 void AliTPC::Digits2Clusters(Int_t eventnumber)
837 //-----------------------------------------------------------------
838 // This is a simple cluster finder.
839 //-----------------------------------------------------------------
840 Error("Digits2Clusters",
841 "Dummy function ! Call AliTPCclusterer::Digits2Clusters(...) instead !");
844 extern Double_t SigmaY2(Double_t, Double_t, Double_t);
845 extern Double_t SigmaZ2(Double_t, Double_t);
846 //_____________________________________________________________________________
847 void AliTPC::Hits2Clusters(Int_t eventn)
849 //--------------------------------------------------------
850 // TPC simple cluster generator from hits
851 // obtained from the TPC Fast Simulator
852 // The point errors are taken from the parametrization
853 //--------------------------------------------------------
855 //-----------------------------------------------------------------
856 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
857 //-----------------------------------------------------------------
858 // Adopted to Marian's cluster data structure by I.Belikov, CERN,
859 // Jouri.Belikov@cern.ch
860 //----------------------------------------------------------------
862 /////////////////////////////////////////////////////////////////////////////
864 //---------------------------------------------------------------------
865 // ALICE TPC Cluster Parameters
866 //--------------------------------------------------------------------
870 // Cluster width in rphi
871 const Float_t kACrphi=0.18322;
872 const Float_t kBCrphi=0.59551e-3;
873 const Float_t kCCrphi=0.60952e-1;
874 // Cluster width in z
875 const Float_t kACz=0.19081;
876 const Float_t kBCz=0.55938e-3;
877 const Float_t kCCz=0.30428;
881 cerr<<"AliTPC::Hits2Clusters(): output file not open !\n";
885 //if(fDefaults == 0) SetDefaults();
887 Float_t sigmaRphi,sigmaZ,clRphi,clZ;
889 TParticle *particle; // pointer to a given particle
890 AliTPChit *tpcHit; // pointer to a sigle TPC hit
894 Float_t pl,pt,tanth,rpad,ratio;
897 //---------------------------------------------------------------
898 // Get the access to the tracks
899 //---------------------------------------------------------------
904 Fatal("Hits2Clusters","Can not find TreeH in folder");
909 Stat_t ntracks = tH->GetEntries();
911 //Switch to the output file
913 if (fLoader->TreeR() == 0x0) fLoader->MakeTree("R");
915 cout<<"fTPCParam->GetTitle() = "<<fTPCParam->GetTitle()<<endl;
917 AliRunLoader* rl = (AliRunLoader*)fLoader->GetEventFolder()->FindObject(AliRunLoader::fgkRunLoaderName);
919 //fTPCParam->Write(fTPCParam->GetTitle());
921 AliTPCClustersArray carray;
922 carray.Setup(fTPCParam);
923 carray.SetClusterType("AliTPCcluster");
924 carray.MakeTree(fLoader->TreeR());
926 Int_t nclusters=0; //cluster counter
928 //------------------------------------------------------------
929 // Loop over all sectors (72 sectors for 20 deg
930 // segmentation for both lower and upper sectors)
931 // Sectors 0-35 are lower sectors, 0-17 z>0, 17-35 z<0
932 // Sectors 36-71 are upper sectors, 36-53 z>0, 54-71 z<0
934 // First cluster for sector 0 starts at "0"
935 //------------------------------------------------------------
937 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++){
939 fTPCParam->AdjustCosSin(isec,cph,sph);
941 //------------------------------------------------------------
943 //------------------------------------------------------------
945 for(Int_t track=0;track<ntracks;track++){
949 // Get number of the TPC hits
951 tpcHit = (AliTPChit*)FirstHit(-1);
957 if (tpcHit->fQ == 0.) {
958 tpcHit = (AliTPChit*) NextHit();
959 continue; //information about track (I.Belikov)
961 sector=tpcHit->fSector; // sector number
964 tpcHit = (AliTPChit*) NextHit();
967 ipart=tpcHit->Track();
968 particle=gAlice->Particle(ipart);
971 if(pt < 1.e-9) pt=1.e-9;
973 tanth = TMath::Abs(tanth);
974 rpad=TMath::Sqrt(tpcHit->X()*tpcHit->X() + tpcHit->Y()*tpcHit->Y());
975 ratio=0.001*rpad/pt; // pt must be in MeV/c - historical reason
977 // space-point resolutions
979 sigmaRphi=SigmaY2(rpad,tanth,pt);
980 sigmaZ =SigmaZ2(rpad,tanth );
984 clRphi=kACrphi-kBCrphi*rpad*tanth+kCCrphi*ratio*ratio;
985 clZ=kACz-kBCz*rpad*tanth+kCCz*tanth*tanth;
987 // temporary protection
989 if(sigmaRphi < 0.) sigmaRphi=0.4e-3;
990 if(sigmaZ < 0.) sigmaZ=0.4e-3;
991 if(clRphi < 0.) clRphi=2.5e-3;
992 if(clZ < 0.) clZ=2.5e-5;
997 // smearing --> rotate to the 1 (13) or to the 25 (49) sector,
998 // then the inaccuracy in a X-Y plane is only along Y (pad row)!
1000 Float_t xprim= tpcHit->X()*cph + tpcHit->Y()*sph;
1001 Float_t yprim=-tpcHit->X()*sph + tpcHit->Y()*cph;
1002 xyz[0]=gRandom->Gaus(yprim,TMath::Sqrt(sigmaRphi)); // y
1003 Float_t alpha=(isec < fTPCParam->GetNInnerSector()) ?
1004 fTPCParam->GetInnerAngle() : fTPCParam->GetOuterAngle();
1005 Float_t ymax=xprim*TMath::Tan(0.5*alpha);
1006 if (TMath::Abs(xyz[0])>ymax) xyz[0]=yprim;
1007 xyz[1]=gRandom->Gaus(tpcHit->Z(),TMath::Sqrt(sigmaZ)); // z
1008 if (TMath::Abs(xyz[1])>fTPCParam->GetZLength()) xyz[1]=tpcHit->Z();
1009 xyz[2]=sigmaRphi; // fSigmaY2
1010 xyz[3]=sigmaZ; // fSigmaZ2
1011 xyz[4]=tpcHit->fQ; // q
1013 AliTPCClustersRow *clrow=carray.GetRow(sector,tpcHit->fPadRow);
1014 if (!clrow) clrow=carray.CreateRow(sector,tpcHit->fPadRow);
1016 Int_t tracks[3]={tpcHit->Track(), -1, -1};
1017 AliTPCcluster cluster(tracks,xyz);
1019 clrow->InsertCluster(&cluster); nclusters++;
1021 tpcHit = (AliTPChit*)NextHit();
1024 } // end of loop over hits
1026 } // end of loop over tracks
1028 Int_t nrows=fTPCParam->GetNRow(isec);
1029 for (Int_t irow=0; irow<nrows; irow++) {
1030 AliTPCClustersRow *clrow=carray.GetRow(isec,irow);
1031 if (!clrow) continue;
1032 carray.StoreRow(isec,irow);
1033 carray.ClearRow(isec,irow);
1036 } // end of loop over sectors
1038 cerr<<"Number of made clusters : "<<nclusters<<" \n";
1039 fLoader->WriteRecPoints("OVERWRITE");
1042 } // end of function
1044 //_________________________________________________________________
1045 void AliTPC::Hits2ExactClustersSector(Int_t isec)
1047 //--------------------------------------------------------
1048 //calculate exact cross point of track and given pad row
1049 //resulting values are expressed in "digit" coordinata
1050 //--------------------------------------------------------
1052 //-----------------------------------------------------------------
1053 // Origin: Marian Ivanov GSI Darmstadt, m.ivanov@gsi.de
1054 //-----------------------------------------------------------------
1056 if (fClustersArray==0){
1060 TParticle *particle; // pointer to a given particle
1061 AliTPChit *tpcHit; // pointer to a sigle TPC hit
1062 // Int_t sector,nhits;
1064 const Int_t kcmaxhits=30000;
1065 AliTPCFastVector * xxxx = new AliTPCFastVector(kcmaxhits*4);
1066 AliTPCFastVector & xxx = *xxxx;
1067 Int_t maxhits = kcmaxhits;
1068 //construct array for each padrow
1069 for (Int_t i=0; i<fTPCParam->GetNRow(isec);i++)
1070 fClustersArray->CreateRow(isec,i);
1072 //---------------------------------------------------------------
1073 // Get the access to the tracks
1074 //---------------------------------------------------------------
1076 TTree *tH = TreeH();
1079 Fatal("Hits2Clusters","Can not find TreeH in folder");
1084 Stat_t ntracks = tH->GetEntries();
1085 Int_t npart = gAlice->GetNtrack();
1088 if (fHitType>1) branch = tH->GetBranch("TPC2");
1089 else branch = tH->GetBranch("TPC");
1091 //------------------------------------------------------------
1093 //------------------------------------------------------------
1095 for(Int_t track=0;track<ntracks;track++){
1096 Bool_t isInSector=kTRUE;
1098 isInSector = TrackInVolume(isec,track);
1099 if (!isInSector) continue;
1101 branch->GetEntry(track); // get next track
1103 // Get number of the TPC hits and a pointer
1107 Int_t currentIndex=0;
1108 Int_t lastrow=-1; //last writen row
1112 tpcHit = (AliTPChit*)FirstHit(-1);
1115 Int_t sector=tpcHit->fSector; // sector number
1117 tpcHit = (AliTPChit*) NextHit();
1121 ipart=tpcHit->Track();
1122 if (ipart<npart) particle=gAlice->Particle(ipart);
1126 Float_t x[3]={tpcHit->X(),tpcHit->Y(),tpcHit->Z()};
1127 Int_t index[3]={1,isec,0};
1128 Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
1129 if (currentrow<0) {tpcHit = (AliTPChit*)NextHit(); continue;}
1130 if (lastrow<0) lastrow=currentrow;
1131 if (currentrow==lastrow){
1132 if ( currentIndex>=maxhits){
1134 xxx.ResizeTo(4*maxhits);
1136 xxx(currentIndex*4)=x[0];
1137 xxx(currentIndex*4+1)=x[1];
1138 xxx(currentIndex*4+2)=x[2];
1139 xxx(currentIndex*4+3)=tpcHit->fQ;
1143 if (currentIndex>2){
1155 for (Int_t index=0;index<currentIndex;index++){
1157 x=x2=x3=x4=xxx(index*4);
1165 sumy+=xxx(index*4+1);
1166 sumxy+=xxx(index*4+1)*x;
1167 sumx2y+=xxx(index*4+1)*x2;
1168 sumz+=xxx(index*4+2);
1169 sumxz+=xxx(index*4+2)*x;
1170 sumx2z+=xxx(index*4+2)*x2;
1171 sumq+=xxx(index*4+3);
1173 Float_t centralPad = (fTPCParam->GetNPads(isec,lastrow)-1)/2;
1174 Float_t det=currentIndex*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumx*sumx4-sumx2*sumx3)+
1175 sumx2*(sumx*sumx3-sumx2*sumx2);
1177 Float_t detay=sumy*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxy*sumx4-sumx2y*sumx3)+
1178 sumx2*(sumxy*sumx3-sumx2y*sumx2);
1179 Float_t detaz=sumz*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxz*sumx4-sumx2z*sumx3)+
1180 sumx2*(sumxz*sumx3-sumx2z*sumx2);
1182 Float_t detby=currentIndex*(sumxy*sumx4-sumx2y*sumx3)-sumy*(sumx*sumx4-sumx2*sumx3)+
1183 sumx2*(sumx*sumx2y-sumx2*sumxy);
1184 Float_t detbz=currentIndex*(sumxz*sumx4-sumx2z*sumx3)-sumz*(sumx*sumx4-sumx2*sumx3)+
1185 sumx2*(sumx*sumx2z-sumx2*sumxz);
1187 if (TMath::Abs(det)<0.00001){
1188 tpcHit = (AliTPChit*)NextHit();
1192 Float_t y=detay/det+centralPad;
1193 Float_t z=detaz/det;
1194 Float_t by=detby/det; //y angle
1195 Float_t bz=detbz/det; //z angle
1196 sumy/=Float_t(currentIndex);
1197 sumz/=Float_t(currentIndex);
1199 AliTPCClustersRow * row = (fClustersArray->GetRow(isec,lastrow));
1201 AliComplexCluster* cl = new((AliComplexCluster*)row->Append()) AliComplexCluster ;
1202 // AliComplexCluster cl;
1208 cl->fTracks[0]=ipart;
1212 } //end of calculating cluster for given row
1215 tpcHit = (AliTPChit*)NextHit();
1216 } // end of loop over hits
1217 } // end of loop over tracks
1218 //write padrows to tree
1219 for (Int_t ii=0; ii<fTPCParam->GetNRow(isec);ii++) {
1220 fClustersArray->StoreRow(isec,ii);
1221 fClustersArray->ClearRow(isec,ii);
1230 void AliTPC::SDigits2Digits2(Int_t eventnumber)
1232 //create digits from summable digits
1233 GenerNoise(500000); //create teble with noise
1235 //conect tree with sSDigits
1236 TTree *t = fLoader->TreeS();
1240 fLoader->LoadSDigits("READ");
1241 t = fLoader->TreeS();
1244 Error("SDigits2Digits2","Can not get input TreeS");
1249 if (fLoader->TreeD() == 0x0) fLoader->MakeTree("D");
1251 AliSimDigits digarr, *dummy=&digarr;
1252 TBranch* sdb = t->GetBranch("Segment");
1255 Error("SDigits2Digits2","Can not find branch with segments in TreeS.");
1259 sdb->SetAddress(&dummy);
1261 Stat_t nentries = t->GetEntries();
1263 // set zero suppression
1265 fTPCParam->SetZeroSup(2);
1267 // get zero suppression
1269 Int_t zerosup = fTPCParam->GetZeroSup();
1271 //make tree with digits
1273 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1274 arr->SetClass("AliSimDigits");
1275 arr->Setup(fTPCParam);
1276 arr->MakeTree(fLoader->TreeD());
1278 AliTPCParam * par = fTPCParam;
1280 //Loop over segments of the TPC
1282 for (Int_t n=0; n<nentries; n++) {
1285 if (!par->AdjustSectorRow(digarr.GetID(),sec,row)) {
1286 cerr<<"AliTPC warning: invalid segment ID ! "<<digarr.GetID()<<endl;
1289 if (!IsSectorActive(sec))
1291 // cout<<n<<" NOT Active \n";
1296 // cout<<n<<" Active \n";
1298 AliSimDigits * digrow =(AliSimDigits*) arr->CreateRow(sec,row);
1299 Int_t nrows = digrow->GetNRows();
1300 Int_t ncols = digrow->GetNCols();
1302 digrow->ExpandBuffer();
1303 digarr.ExpandBuffer();
1304 digrow->ExpandTrackBuffer();
1305 digarr.ExpandTrackBuffer();
1308 Short_t * pamp0 = digarr.GetDigits();
1309 Int_t * ptracks0 = digarr.GetTracks();
1310 Short_t * pamp1 = digrow->GetDigits();
1311 Int_t * ptracks1 = digrow->GetTracks();
1312 Int_t nelems =nrows*ncols;
1313 Int_t saturation = fTPCParam->GetADCSat();
1314 //use internal structure of the AliDigits - for speed reason
1315 //if you cahnge implementation
1316 //of the Alidigits - it must be rewriten -
1317 for (Int_t i= 0; i<nelems; i++){
1318 // Float_t q = *pamp0;
1319 //q/=16.; //conversion faktor
1320 //Float_t noise= GetNoise();
1322 //q= TMath::Nint(q);
1323 Float_t q = TMath::Nint(Float_t(*pamp0)/16.+GetNoise());
1325 if (q>saturation) q=saturation;
1327 //if (ptracks0[0]==0)
1330 ptracks1[0]=ptracks0[0];
1331 ptracks1[nelems]=ptracks0[nelems];
1332 ptracks1[2*nelems]=ptracks0[2*nelems];
1340 arr->StoreRow(sec,row);
1341 arr->ClearRow(sec,row);
1342 // cerr<<sec<<"\t"<<row<<"\n";
1347 fLoader->WriteDigits("OVERWRITE");
1351 //__________________________________________________________________
1352 void AliTPC::SetDefaults(){
1355 cerr<<"Setting default parameters...\n";
1357 // Set response functions
1360 AliRunLoader* rl = (AliRunLoader*)fLoader->GetEventFolder()->FindObject(AliRunLoader::fgkRunLoaderName);
1362 AliTPCParamSR *param=(AliTPCParamSR*)gDirectory->Get("75x40_100x60");
1364 printf("You are using 2 pad-length geom hits with 3 pad-lenght geom digits...\n");
1366 param = new AliTPCParamSR();
1369 param=(AliTPCParamSR*)gDirectory->Get("75x40_100x60_150x60");
1372 printf("No TPC parameters found\n");
1377 AliTPCPRF2D * prfinner = new AliTPCPRF2D;
1378 AliTPCPRF2D * prfouter1 = new AliTPCPRF2D;
1379 AliTPCPRF2D * prfouter2 = new AliTPCPRF2D;
1380 AliTPCRF1D * rf = new AliTPCRF1D(kTRUE);
1381 rf->SetGauss(param->GetZSigma(),param->GetZWidth(),1.);
1382 rf->SetOffset(3*param->GetZSigma());
1385 TDirectory *savedir=gDirectory;
1386 TFile *f=TFile::Open("$ALICE_ROOT/TPC/AliTPCprf2d.root");
1388 cerr<<"Can't open $ALICE_ROOT/TPC/AliTPCprf2d.root !\n" ;
1391 prfinner->Read("prf_07504_Gati_056068_d02");
1392 prfouter1->Read("prf_10006_Gati_047051_d03");
1393 prfouter2->Read("prf_15006_Gati_047051_d03");
1397 param->SetInnerPRF(prfinner);
1398 param->SetOuter1PRF(prfouter1);
1399 param->SetOuter2PRF(prfouter2);
1400 param->SetTimeRF(rf);
1410 //__________________________________________________________________
1411 void AliTPC::Hits2Digits(Int_t eventnumber)
1413 //----------------------------------------------------
1414 // Loop over all sectors for a single event
1415 //----------------------------------------------------
1416 AliRunLoader* rl = (AliRunLoader*)fLoader->GetEventFolder()->FindObject(AliRunLoader::fgkRunLoaderName);
1417 rl->GetEvent(eventnumber);
1418 if (fLoader->TreeH() == 0x0)
1420 if(fLoader->LoadHits())
1422 Error("Hits2Digits","Can not load hits.");
1427 if (fLoader->TreeD() == 0x0 )
1429 fLoader->MakeTree("D");
1430 if (fLoader->TreeD() == 0x0 )
1432 Error("Hits2Digits","Can not get TreeD");
1437 if(fDefaults == 0) SetDefaults(); // check if the parameters are set
1438 GenerNoise(500000); //create teble with noise
1440 //setup TPCDigitsArray
1442 if(GetDigitsArray()) delete GetDigitsArray();
1444 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1445 arr->SetClass("AliSimDigits");
1446 arr->Setup(fTPCParam);
1448 arr->MakeTree(fLoader->TreeD());
1449 SetDigitsArray(arr);
1451 fDigitsSwitch=0; // standard digits
1453 cerr<<"Digitizing TPC -- normal digits...\n";
1455 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++)
1456 if (IsSectorActive(isec))
1458 cout<<"Sector "<<isec<<"is active\n";
1459 Hits2DigitsSector(isec);
1463 cout<<"Sector "<<isec<<"is NOT active\n";
1466 fLoader->WriteDigits("OVERWRITE");
1471 //__________________________________________________________________
1472 void AliTPC::Hits2SDigits2(Int_t eventnumber)
1475 //-----------------------------------------------------------
1476 // summable digits - 16 bit "ADC", no noise, no saturation
1477 //-----------------------------------------------------------
1479 //----------------------------------------------------
1480 // Loop over all sectors for a single event
1481 //----------------------------------------------------
1482 // AliRunLoader* rl = (AliRunLoader*)fLoader->GetEventFolder()->FindObject(AliRunLoader::fgkRunLoaderName);
1484 AliRunLoader* rl = fLoader->GetRunLoader();
1486 rl->GetEvent(eventnumber);
1487 if (fLoader->TreeH() == 0x0)
1489 if(fLoader->LoadHits())
1491 Error("Hits2Digits","Can not load hits.");
1498 if (fLoader->TreeS() == 0x0 )
1500 fLoader->MakeTree("S");
1503 if(fDefaults == 0) SetDefaults();
1505 GenerNoise(500000); //create table with noise
1506 //setup TPCDigitsArray
1508 if(GetDigitsArray()) delete GetDigitsArray();
1511 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1512 arr->SetClass("AliSimDigits");
1513 arr->Setup(fTPCParam);
1514 arr->MakeTree(fLoader->TreeS());
1516 SetDigitsArray(arr);
1518 cerr<<"Digitizing TPC -- summable digits...\n";
1520 fDigitsSwitch=1; // summable digits
1522 // set zero suppression to "0"
1524 fTPCParam->SetZeroSup(0);
1526 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++)
1527 if (IsSectorActive(isec))
1529 // cout<<"Sector "<<isec<<" is active\n";
1530 Hits2DigitsSector(isec);
1533 fLoader->WriteSDigits("OVERWRITE");
1535 //this line prevents the crash in the similar one
1536 //on the beginning of this method
1537 //destructor attempts to reset the tree, which is deleted by the loader
1538 //need to be redesign
1539 if(GetDigitsArray()) delete GetDigitsArray();
1540 SetDigitsArray(0x0);
1542 //__________________________________________________________________
1544 void AliTPC::Hits2SDigits()
1547 //-----------------------------------------------------------
1548 // summable digits - 16 bit "ADC", no noise, no saturation
1549 //-----------------------------------------------------------
1551 //----------------------------------------------------
1552 // Loop over all sectors for a single event
1553 //----------------------------------------------------
1554 //MI change - for pp run
1555 // Int_t eventnumber = gAlice->GetEvNumber();
1556 // AliRunLoader* rl = (AliRunLoader*)fLoader->GetEventFolder()->FindObject(AliRunLoader::fgkRunLoaderName);
1557 // rl->GetEvent(eventnumber);
1558 // 12/05/2003 This method is obsolete and not used. It should be redesingned
1561 if (fLoader->TreeH() == 0x0)
1563 if(fLoader->LoadHits())
1565 Error("Hits2Digits","Can not load hits.");
1570 if(fDefaults == 0) SetDefaults();
1571 GenerNoise(500000); //create table with noise
1573 //setup TPCDigitsArray
1575 if(GetDigitsArray()) delete GetDigitsArray();
1577 if (fLoader->TreeS() == 0x0 )
1579 fLoader->MakeTree("S");
1582 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1583 arr->SetClass("AliSimDigits");
1584 arr->Setup(fTPCParam);
1585 arr->MakeTree(fLoader->TreeS());
1586 SetDigitsArray(arr);
1588 cerr<<"Digitizing TPC -- summable digits...\n";
1590 // fDigitsSwitch=1; // summable digits -for the moment direct
1592 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++) if (IsSectorActive(isec)) Hits2DigitsSector(isec);
1596 cout<<"Why method TPC::Hits2SDigits writes digits and not sdigits? skowron\n";
1597 fLoader->WriteDigits("OVERWRITE");
1599 //_____________________________________________________________________________
1601 void AliTPC::Hits2DigitsSector(Int_t isec)
1603 //-------------------------------------------------------------------
1604 // TPC conversion from hits to digits.
1605 //-------------------------------------------------------------------
1607 //-----------------------------------------------------------------
1608 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1609 //-----------------------------------------------------------------
1611 //-------------------------------------------------------
1612 // Get the access to the track hits
1613 //-------------------------------------------------------
1615 // check if the parameters are set - important if one calls this method
1616 // directly, not from the Hits2Digits
1618 if(fDefaults == 0) SetDefaults();
1620 TTree *tH = TreeH(); // pointer to the hits tree
1623 Fatal("Hits2DigitsSector","Can not find TreeH in folder");
1627 Stat_t ntracks = tH->GetEntries();
1631 //-------------------------------------------
1632 // Only if there are any tracks...
1633 //-------------------------------------------
1637 //printf("*** Processing sector number %d ***\n",isec);
1639 Int_t nrows =fTPCParam->GetNRow(isec);
1641 row= new TObjArray* [nrows+2]; // 2 extra rows for cross talk
1643 MakeSector(isec,nrows,tH,ntracks,row);
1645 //--------------------------------------------------------
1646 // Digitize this sector, row by row
1647 // row[i] is the pointer to the TObjArray of AliTPCFastVectors,
1648 // each one containing electrons accepted on this
1649 // row, assigned into tracks
1650 //--------------------------------------------------------
1654 if (fDigitsArray->GetTree()==0)
1656 Fatal("Hits2DigitsSector","Tree not set in fDigitsArray");
1659 for (i=0;i<nrows;i++){
1661 AliDigits * dig = fDigitsArray->CreateRow(isec,i);
1663 DigitizeRow(i,isec,row);
1665 fDigitsArray->StoreRow(isec,i);
1667 Int_t ndig = dig->GetDigitSize();
1670 printf("*** Sector, row, compressed digits %d %d %d ***\n",isec,i,ndig);
1672 fDigitsArray->ClearRow(isec,i);
1675 } // end of the sector digitization
1677 for(i=0;i<nrows+2;i++){
1682 delete [] row; // delete the array of pointers to TObjArray-s
1686 } // end of Hits2DigitsSector
1689 //_____________________________________________________________________________
1690 void AliTPC::DigitizeRow(Int_t irow,Int_t isec,TObjArray **rows)
1692 //-----------------------------------------------------------
1693 // Single row digitization, coupling from the neighbouring
1694 // rows taken into account
1695 //-----------------------------------------------------------
1697 //-----------------------------------------------------------------
1698 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1699 // Modified: Marian Ivanov GSI Darmstadt, m.ivanov@gsi.de
1700 //-----------------------------------------------------------------
1703 Float_t zerosup = fTPCParam->GetZeroSup();
1704 // Int_t nrows =fTPCParam->GetNRow(isec);
1705 fCurrentIndex[1]= isec;
1708 Int_t nofPads = fTPCParam->GetNPads(isec,irow);
1709 Int_t nofTbins = fTPCParam->GetMaxTBin();
1710 Int_t indexRange[4];
1712 // Integrated signal for this row
1713 // and a single track signal
1716 AliTPCFastMatrix *m1 = new AliTPCFastMatrix(0,nofPads,0,nofTbins); // integrated
1717 AliTPCFastMatrix *m2 = new AliTPCFastMatrix(0,nofPads,0,nofTbins); // single
1719 AliTPCFastMatrix &total = *m1;
1721 // Array of pointers to the label-signal list
1723 Int_t nofDigits = nofPads*nofTbins; // number of digits for this row
1724 Float_t **pList = new Float_t* [nofDigits];
1728 for(lp=0;lp<nofDigits;lp++)pList[lp]=0; // set all pointers to NULL
1732 //Int_t row1 = TMath::Max(irow-fTPCParam->GetNCrossRows(),0);
1733 //Int_t row2 = TMath::Min(irow+fTPCParam->GetNCrossRows(),nrows-1);
1736 for (Int_t row= row1;row<=row2;row++){
1737 Int_t nTracks= rows[row]->GetEntries();
1738 for (i1=0;i1<nTracks;i1++){
1739 fCurrentIndex[2]= row;
1740 fCurrentIndex[3]=irow+1;
1742 m2->Zero(); // clear single track signal matrix
1743 Float_t trackLabel = GetSignal(rows[row],i1,m2,m1,indexRange);
1744 GetList(trackLabel,nofPads,m2,indexRange,pList);
1746 else GetSignal(rows[row],i1,0,m1,indexRange);
1752 AliDigits *dig = fDigitsArray->GetRow(isec,irow);
1754 Float_t fzerosup = zerosup+0.5;
1755 for(Int_t it=0;it<nofTbins;it++){
1756 Float_t *pq = &(total.UncheckedAt(0,it));
1757 for(Int_t ip=0;ip<nofPads;ip++){
1761 if(fDigitsSwitch == 0){
1763 if(q <=fzerosup) continue; // do not fill zeros
1765 if(q > fTPCParam->GetADCSat()) q = fTPCParam->GetADCSat(); // saturation
1770 if(q <= 0.) continue; // do not fill zeros
1771 if(q>2000.) q=2000.;
1777 // "real" signal or electronic noise (list = -1)?
1780 for(Int_t j1=0;j1<3;j1++){
1781 tracks[j1] = (pList[gi]) ?(Int_t)(*(pList[gi]+j1)) : -2;
1786 <A NAME="AliDigits"></A>
1787 using of AliDigits object
1790 dig->SetDigitFast((Short_t)q,it,ip);
1791 if (fDigitsArray->IsSimulated())
1793 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[0],it,ip,0);
1794 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[1],it,ip,1);
1795 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[2],it,ip,2);
1799 } // end of loop over time buckets
1800 } // end of lop over pads
1803 // This row has been digitized, delete nonused stuff
1806 for(lp=0;lp<nofDigits;lp++){
1807 if(pList[lp]) delete [] pList[lp];
1816 } // end of DigitizeRow
1818 //_____________________________________________________________________________
1820 Float_t AliTPC::GetSignal(TObjArray *p1, Int_t ntr,
1821 AliTPCFastMatrix *m1, AliTPCFastMatrix *m2,Int_t *indexRange)
1824 //---------------------------------------------------------------
1825 // Calculates 2-D signal (pad,time) for a single track,
1826 // returns a pointer to the signal matrix and the track label
1827 // No digitization is performed at this level!!!
1828 //---------------------------------------------------------------
1830 //-----------------------------------------------------------------
1831 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1832 // Modified: Marian Ivanov
1833 //-----------------------------------------------------------------
1835 AliTPCFastVector *tv;
1837 tv = (AliTPCFastVector*)p1->At(ntr); // pointer to a track
1838 AliTPCFastVector &v = *tv;
1840 Float_t label = v(0);
1841 Int_t centralPad = (fTPCParam->GetNPads(fCurrentIndex[1],fCurrentIndex[3]-1)-1)/2;
1843 Int_t nElectrons = (tv->GetNrows()-1)/4;
1844 indexRange[0]=9999; // min pad
1845 indexRange[1]=-1; // max pad
1846 indexRange[2]=9999; //min time
1847 indexRange[3]=-1; // max time
1849 AliTPCFastMatrix &signal = *m1;
1850 AliTPCFastMatrix &total = *m2;
1852 // Loop over all electrons
1854 for(Int_t nel=0; nel<nElectrons; nel++){
1856 Float_t aval = v(idx+4);
1857 Float_t eltoadcfac=aval*fTPCParam->GetTotalNormFac();
1858 Float_t xyz[3]={v(idx+1),v(idx+2),v(idx+3)};
1859 Int_t n = ((AliTPCParamSR*)fTPCParam)->CalcResponseFast(xyz,fCurrentIndex,fCurrentIndex[3]);
1861 Int_t *index = fTPCParam->GetResBin(0);
1862 Float_t *weight = & (fTPCParam->GetResWeight(0));
1864 if (n>0) for (Int_t i =0; i<n; i++){
1865 Int_t pad=index[1]+centralPad; //in digit coordinates central pad has coordinate 0
1868 Int_t time=index[2];
1869 Float_t qweight = *(weight)*eltoadcfac;
1871 if (m1!=0) signal.UncheckedAt(pad,time)+=qweight;
1872 total.UncheckedAt(pad,time)+=qweight;
1873 if (indexRange[0]>pad) indexRange[0]=pad;
1874 if (indexRange[1]<pad) indexRange[1]=pad;
1875 if (indexRange[2]>time) indexRange[2]=time;
1876 if (indexRange[3]<time) indexRange[3]=time;
1883 } // end of loop over electrons
1885 return label; // returns track label when finished
1888 //_____________________________________________________________________________
1889 void AliTPC::GetList(Float_t label,Int_t np,AliTPCFastMatrix *m,
1890 Int_t *indexRange, Float_t **pList)
1892 //----------------------------------------------------------------------
1893 // Updates the list of tracks contributing to digits for a given row
1894 //----------------------------------------------------------------------
1896 //-----------------------------------------------------------------
1897 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1898 //-----------------------------------------------------------------
1900 AliTPCFastMatrix &signal = *m;
1902 // lop over nonzero digits
1904 for(Int_t it=indexRange[2];it<indexRange[3]+1;it++){
1905 for(Int_t ip=indexRange[0];ip<indexRange[1]+1;ip++){
1908 // accept only the contribution larger than 500 electrons (1/2 s_noise)
1910 if(signal(ip,it)<0.5) continue;
1913 Int_t globalIndex = it*np+ip; // globalIndex starts from 0!
1915 if(!pList[globalIndex]){
1918 // Create new list (6 elements - 3 signals and 3 labels),
1921 pList[globalIndex] = new Float_t [6];
1925 *pList[globalIndex] = -1.;
1926 *(pList[globalIndex]+1) = -1.;
1927 *(pList[globalIndex]+2) = -1.;
1928 *(pList[globalIndex]+3) = -1.;
1929 *(pList[globalIndex]+4) = -1.;
1930 *(pList[globalIndex]+5) = -1.;
1933 *pList[globalIndex] = label;
1934 *(pList[globalIndex]+3) = signal(ip,it);
1938 // check the signal magnitude
1940 Float_t highest = *(pList[globalIndex]+3);
1941 Float_t middle = *(pList[globalIndex]+4);
1942 Float_t lowest = *(pList[globalIndex]+5);
1945 // compare the new signal with already existing list
1948 if(signal(ip,it)<lowest) continue; // neglect this track
1952 if (signal(ip,it)>highest){
1953 *(pList[globalIndex]+5) = middle;
1954 *(pList[globalIndex]+4) = highest;
1955 *(pList[globalIndex]+3) = signal(ip,it);
1957 *(pList[globalIndex]+2) = *(pList[globalIndex]+1);
1958 *(pList[globalIndex]+1) = *pList[globalIndex];
1959 *pList[globalIndex] = label;
1961 else if (signal(ip,it)>middle){
1962 *(pList[globalIndex]+5) = middle;
1963 *(pList[globalIndex]+4) = signal(ip,it);
1965 *(pList[globalIndex]+2) = *(pList[globalIndex]+1);
1966 *(pList[globalIndex]+1) = label;
1969 *(pList[globalIndex]+5) = signal(ip,it);
1970 *(pList[globalIndex]+2) = label;
1974 } // end of loop over pads
1975 } // end of loop over time bins
1980 //___________________________________________________________________
1981 void AliTPC::MakeSector(Int_t isec,Int_t nrows,TTree *TH,
1982 Stat_t ntracks,TObjArray **row)
1985 //-----------------------------------------------------------------
1986 // Prepares the sector digitization, creates the vectors of
1987 // tracks for each row of this sector. The track vector
1988 // contains the track label and the position of electrons.
1989 //-----------------------------------------------------------------
1991 //-----------------------------------------------------------------
1992 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1993 //-----------------------------------------------------------------
1995 Float_t gasgain = fTPCParam->GetGasGain();
1999 AliTPChit *tpcHit; // pointer to a sigle TPC hit
2002 if (fHitType>1) branch = TH->GetBranch("TPC2");
2003 else branch = TH->GetBranch("TPC");
2006 //----------------------------------------------
2007 // Create TObjArray-s, one for each row,
2008 // each TObjArray will store the AliTPCFastVectors
2009 // of electrons, one AliTPCFastVectors per each track.
2010 //----------------------------------------------
2012 Int_t *nofElectrons = new Int_t [nrows+2]; // electron counter for each row
2013 AliTPCFastVector **tracks = new AliTPCFastVector* [nrows+2]; //pointers to the track vectors
2015 for(i=0; i<nrows+2; i++){
2016 row[i] = new TObjArray;
2023 //--------------------------------------------------------------------
2024 // Loop over tracks, the "track" contains the full history
2025 //--------------------------------------------------------------------
2027 Int_t previousTrack,currentTrack;
2028 previousTrack = -1; // nothing to store so far!
2030 for(Int_t track=0;track<ntracks;track++){
2031 Bool_t isInSector=kTRUE;
2033 isInSector = TrackInVolume(isec,track);
2034 if (!isInSector) continue;
2036 branch->GetEntry(track); // get next track
2040 tpcHit = (AliTPChit*)FirstHit(-1);
2042 //--------------------------------------------------------------
2044 //--------------------------------------------------------------
2049 Int_t sector=tpcHit->fSector; // sector number
2051 tpcHit = (AliTPChit*) NextHit();
2055 currentTrack = tpcHit->Track(); // track number
2058 if(currentTrack != previousTrack){
2060 // store already filled fTrack
2062 for(i=0;i<nrows+2;i++){
2063 if(previousTrack != -1){
2064 if(nofElectrons[i]>0){
2065 AliTPCFastVector &v = *tracks[i];
2066 v(0) = previousTrack;
2067 tracks[i]->ResizeTo(4*nofElectrons[i]+1); // shrink if necessary
2068 row[i]->Add(tracks[i]);
2071 delete tracks[i]; // delete empty AliTPCFastVector
2077 tracks[i] = new AliTPCFastVector(481); // AliTPCFastVectors for the next fTrack
2079 } // end of loop over rows
2081 previousTrack=currentTrack; // update track label
2084 Int_t qI = (Int_t) (tpcHit->fQ); // energy loss (number of electrons)
2086 //---------------------------------------------------
2087 // Calculate the electron attachment probability
2088 //---------------------------------------------------
2091 Float_t time = 1.e6*(fTPCParam->GetZLength()-TMath::Abs(tpcHit->Z()))
2092 /fTPCParam->GetDriftV();
2094 Float_t attProb = fTPCParam->GetAttCoef()*
2095 fTPCParam->GetOxyCont()*time; // fraction!
2097 //-----------------------------------------------
2098 // Loop over electrons
2099 //-----------------------------------------------
2102 for(Int_t nel=0;nel<qI;nel++){
2103 // skip if electron lost due to the attachment
2104 if((gRandom->Rndm(0)) < attProb) continue; // electron lost!
2109 // protection for the nonphysical avalanche size (10**6 maximum)
2111 Double_t rn=TMath::Max(gRandom->Rndm(0),1.93e-22);
2112 xyz[3]= (Float_t) (-gasgain*TMath::Log(rn));
2115 TransportElectron(xyz,index);
2117 fTPCParam->GetPadRow(xyz,index);
2118 // row 0 - cross talk from the innermost row
2119 // row fNRow+1 cross talk from the outermost row
2120 rowNumber = index[2]+1;
2121 //transform position to local digit coordinates
2122 //relative to nearest pad row
2123 if ((rowNumber<0)||rowNumber>fTPCParam->GetNRow(isec)+1) continue;
2125 if (isec <fTPCParam->GetNInnerSector()) {
2126 x1 = xyz[1]*fTPCParam->GetInnerPadPitchWidth();
2127 y1 = fTPCParam->GetYInner(rowNumber);
2130 x1=xyz[1]*fTPCParam->GetOuterPadPitchWidth();
2131 y1 = fTPCParam->GetYOuter(rowNumber);
2133 // gain inefficiency at the wires edges - linear
2136 if(x1>y1) xyz[3]*=TMath::Max(1.e-6,(y1-x1+1.));
2138 nofElectrons[rowNumber]++;
2139 //----------------------------------
2140 // Expand vector if necessary
2141 //----------------------------------
2142 if(nofElectrons[rowNumber]>120){
2143 Int_t range = tracks[rowNumber]->GetNrows();
2144 if((nofElectrons[rowNumber])>(range-1)/4){
2146 tracks[rowNumber]->ResizeTo(range+400); // Add 100 electrons
2150 AliTPCFastVector &v = *tracks[rowNumber];
2151 Int_t idx = 4*nofElectrons[rowNumber]-3;
2152 Real_t * position = &(((AliTPCFastVector&)v).UncheckedAt(idx)); //make code faster
2153 memcpy(position,xyz,4*sizeof(Float_t));
2155 } // end of loop over electrons
2157 tpcHit = (AliTPChit*)NextHit();
2159 } // end of loop over hits
2160 } // end of loop over tracks
2163 // store remaining track (the last one) if not empty
2166 for(i=0;i<nrows+2;i++){
2167 if(nofElectrons[i]>0){
2168 AliTPCFastVector &v = *tracks[i];
2169 v(0) = previousTrack;
2170 tracks[i]->ResizeTo(4*nofElectrons[i]+1); // shrink if necessary
2171 row[i]->Add(tracks[i]);
2180 delete [] nofElectrons;
2183 } // end of MakeSector
2186 //_____________________________________________________________________________
2190 // Initialise TPC detector after definition of geometry
2195 printf("\n%s: ",ClassName());
2196 for(i=0;i<35;i++) printf("*");
2197 printf(" TPC_INIT ");
2198 for(i=0;i<35;i++) printf("*");
2199 printf("\n%s: ",ClassName());
2201 for(i=0;i<80;i++) printf("*");
2206 //_____________________________________________________________________________
2207 void AliTPC::MakeBranch(Option_t* option)
2210 // Create Tree branches for the TPC.
2212 if(GetDebug()) Info("MakeBranch","");
2213 Int_t buffersize = 4000;
2214 char branchname[10];
2215 sprintf(branchname,"%s",GetName());
2217 const char *h = strstr(option,"H");
2219 if ( h && (fHitType<=1) && (fHits == 0x0)) fHits = new TClonesArray("AliTPChit", 176);//skowron 20.06.03
2221 AliDetector::MakeBranch(option);
2223 const char *d = strstr(option,"D");
2225 if (fDigits && fLoader->TreeD() && d)
2227 MakeBranchInTree(gAlice->TreeD(), branchname, &fDigits, buffersize, 0);
2230 if (fHitType>1) MakeBranch2(option,0); // MI change 14.09.2000
2233 //_____________________________________________________________________________
2234 void AliTPC::ResetDigits()
2237 // Reset number of digits and the digits array for this detector
2240 if (fDigits) fDigits->Clear();
2243 //_____________________________________________________________________________
2244 void AliTPC::SetSecAL(Int_t sec)
2246 //---------------------------------------------------
2247 // Activate/deactivate selection for lower sectors
2248 //---------------------------------------------------
2250 //-----------------------------------------------------------------
2251 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2252 //-----------------------------------------------------------------
2256 //_____________________________________________________________________________
2257 void AliTPC::SetSecAU(Int_t sec)
2259 //----------------------------------------------------
2260 // Activate/deactivate selection for upper sectors
2261 //---------------------------------------------------
2263 //-----------------------------------------------------------------
2264 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2265 //-----------------------------------------------------------------
2269 //_____________________________________________________________________________
2270 void AliTPC::SetSecLows(Int_t s1,Int_t s2,Int_t s3,Int_t s4,Int_t s5, Int_t s6)
2272 //----------------------------------------
2273 // Select active lower sectors
2274 //----------------------------------------
2276 //-----------------------------------------------------------------
2277 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2278 //-----------------------------------------------------------------
2288 //_____________________________________________________________________________
2289 void AliTPC::SetSecUps(Int_t s1,Int_t s2,Int_t s3,Int_t s4,Int_t s5, Int_t s6,
2290 Int_t s7, Int_t s8 ,Int_t s9 ,Int_t s10,
2291 Int_t s11 , Int_t s12)
2293 //--------------------------------
2294 // Select active upper sectors
2295 //--------------------------------
2297 //-----------------------------------------------------------------
2298 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2299 //-----------------------------------------------------------------
2315 //_____________________________________________________________________________
2316 void AliTPC::SetSens(Int_t sens)
2319 //-------------------------------------------------------------
2320 // Activates/deactivates the sensitive strips at the center of
2321 // the pad row -- this is for the space-point resolution calculations
2322 //-------------------------------------------------------------
2324 //-----------------------------------------------------------------
2325 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2326 //-----------------------------------------------------------------
2332 void AliTPC::SetSide(Float_t side=0.)
2334 // choice of the TPC side
2339 //____________________________________________________________________________
2340 void AliTPC::SetGasMixt(Int_t nc,Int_t c1,Int_t c2,Int_t c3,Float_t p1,
2341 Float_t p2,Float_t p3)
2344 // gax mixture definition
2358 //_____________________________________________________________________________
2360 void AliTPC::TransportElectron(Float_t *xyz, Int_t *index)
2363 // electron transport taking into account:
2365 // 2.ExB at the wires
2366 // 3. nonisochronity
2368 // xyz and index must be already transformed to system 1
2371 fTPCParam->Transform1to2(xyz,index);
2374 Float_t driftl=xyz[2];
2375 if(driftl<0.01) driftl=0.01;
2376 driftl=TMath::Sqrt(driftl);
2377 Float_t sigT = driftl*(fTPCParam->GetDiffT());
2378 Float_t sigL = driftl*(fTPCParam->GetDiffL());
2379 xyz[0]=gRandom->Gaus(xyz[0],sigT);
2380 xyz[1]=gRandom->Gaus(xyz[1],sigT);
2381 xyz[2]=gRandom->Gaus(xyz[2],sigL);
2385 if (fTPCParam->GetMWPCReadout()==kTRUE){
2386 Float_t dx = fTPCParam->Transform2to2NearestWire(xyz,index);
2387 xyz[1]+=dx*(fTPCParam->GetOmegaTau());
2389 //add nonisochronity (not implemented yet)
2392 ClassImp(AliTPCdigit)
2394 //_____________________________________________________________________________
2395 AliTPCdigit::AliTPCdigit(Int_t *tracks, Int_t *digits):
2399 // Creates a TPC digit object
2401 fSector = digits[0];
2402 fPadRow = digits[1];
2405 fSignal = digits[4];
2411 //_____________________________________________________________________________
2412 AliTPChit::AliTPChit(Int_t shunt, Int_t track, Int_t *vol, Float_t *hits):
2416 // Creates a TPC hit object
2426 //________________________________________________________________________
2427 // Additional code because of the AliTPCTrackHitsV2
2429 void AliTPC::MakeBranch2(Option_t *option,const char *file)
2432 // Create a new branch in the current Root Tree
2433 // The branch of fHits is automatically split
2434 // MI change 14.09.2000
2435 if(GetDebug()) Info("MakeBranch2","");
2436 if (fHitType<2) return;
2437 char branchname[10];
2438 sprintf(branchname,"%s2",GetName());
2440 // Get the pointer to the header
2441 const char *cH = strstr(option,"H");
2443 if (fTrackHits && TreeH() && cH && fHitType&4)
2445 if(GetDebug()) Info("MakeBranch2","Making branch for Type 4 Hits");
2446 TreeH()->Branch(branchname,"AliTPCTrackHitsV2",&fTrackHits,fBufferSize,99);
2449 if (fTrackHitsOld && TreeH() && cH && fHitType&2)
2451 if(GetDebug()) Info("MakeBranch2","Making branch for Type 2 Hits");
2452 AliObjectBranch * branch = new AliObjectBranch(branchname,"AliTPCTrackHits",&fTrackHitsOld,
2453 TreeH(),fBufferSize,99);
2454 TreeH()->GetListOfBranches()->Add(branch);
2458 void AliTPC::SetTreeAddress()
2460 //Sets tree address for hits
2463 if (fHits == 0x0 ) fHits = new TClonesArray("AliTPChit", 176);//skowron 20.06.03
2464 AliDetector::SetTreeAddress();
2466 if (fHitType>1) SetTreeAddress2();
2469 void AliTPC::SetTreeAddress2()
2472 // Set branch address for the TrackHits Tree
2474 if(GetDebug()) Info("SetTreeAddress2","");
2477 char branchname[20];
2478 sprintf(branchname,"%s2",GetName());
2480 // Branch address for hit tree
2481 TTree *treeH = TreeH();
2482 if ((treeH)&&(fHitType&4)) {
2483 branch = treeH->GetBranch(branchname);
2486 branch->SetAddress(&fTrackHits);
2487 cout<<"AliTPC::SetTreeAddress2 fHitType&4 Setting"<<endl;
2489 else cout<<"AliTPC::SetTreeAddress2 fHitType&4 Failed"<<endl;
2491 if ((treeH)&&(fHitType&2)) {
2492 branch = treeH->GetBranch(branchname);
2495 branch->SetAddress(&fTrackHitsOld);
2496 cout<<"AliTPC::SetTreeAddress2 fHitType&2 Setting"<<endl;
2498 else cout<<"AliTPC::SetTreeAddress2 fHitType&2 Failed"<<endl;
2500 //set address to TREETR
2502 TTree *treeTR = TreeTR();
2503 if (treeTR && fTrackReferences) {
2504 branch = treeTR->GetBranch(GetName());
2505 if (branch) branch->SetAddress(&fTrackReferences);
2510 void AliTPC::FinishPrimary()
2512 if (fTrackHits &&fHitType&4) fTrackHits->FlushHitStack();
2513 if (fTrackHitsOld && fHitType&2) fTrackHitsOld->FlushHitStack();
2517 void AliTPC::AddHit2(Int_t track, Int_t *vol, Float_t *hits)
2520 // add hit to the list
2523 int primary = gAlice->GetPrimary(track);
2524 gAlice->Particle(primary)->SetBit(kKeepBit);
2528 gAlice->FlagTrack(track);
2530 //AliTPChit *hit = (AliTPChit*)fHits->UncheckedAt(fNhits-1);
2531 //if (hit->fTrack!=rtrack)
2532 // cout<<"bad track number\n";
2533 if (fTrackHits && fHitType&4)
2534 fTrackHits->AddHitKartez(vol[0],rtrack, hits[0],
2535 hits[1],hits[2],(Int_t)hits[3]);
2536 if (fTrackHitsOld &&fHitType&2 )
2537 fTrackHitsOld->AddHitKartez(vol[0],rtrack, hits[0],
2538 hits[1],hits[2],(Int_t)hits[3]);
2542 void AliTPC::ResetHits()
2544 if (fHitType&1) AliDetector::ResetHits();
2545 if (fHitType>1) ResetHits2();
2548 void AliTPC::ResetHits2()
2552 if (fTrackHits && fHitType&4) fTrackHits->Clear();
2553 if (fTrackHitsOld && fHitType&2) fTrackHitsOld->Clear();
2557 AliHit* AliTPC::FirstHit(Int_t track)
2559 if (fHitType>1) return FirstHit2(track);
2560 return AliDetector::FirstHit(track);
2562 AliHit* AliTPC::NextHit()
2564 if (fHitType>1) return NextHit2();
2566 return AliDetector::NextHit();
2569 AliHit* AliTPC::FirstHit2(Int_t track)
2572 // Initialise the hit iterator
2573 // Return the address of the first hit for track
2574 // If track>=0 the track is read from disk
2575 // while if track<0 the first hit of the current
2576 // track is returned
2579 gAlice->ResetHits();
2580 TreeH()->GetEvent(track);
2583 if (fTrackHits && fHitType&4) {
2584 fTrackHits->First();
2585 return fTrackHits->GetHit();
2587 if (fTrackHitsOld && fHitType&2) {
2588 fTrackHitsOld->First();
2589 return fTrackHitsOld->GetHit();
2595 AliHit* AliTPC::NextHit2()
2598 //Return the next hit for the current track
2601 if (fTrackHitsOld && fHitType&2) {
2602 fTrackHitsOld->Next();
2603 return fTrackHitsOld->GetHit();
2607 return fTrackHits->GetHit();
2613 void AliTPC::LoadPoints(Int_t)
2617 /* if(fHitType==1) return AliDetector::LoadPoints(a);
2620 if(fHitType==1) AliDetector::LoadPoints(a);
2621 else LoadPoints2(a);
2628 void AliTPC::RemapTrackHitIDs(Int_t *map)
2630 if (!fTrackHits) return;
2632 if (fTrackHitsOld && fHitType&2){
2633 AliObjectArray * arr = fTrackHitsOld->fTrackHitsInfo;
2634 for (UInt_t i=0;i<arr->GetSize();i++){
2635 AliTrackHitsInfo * info = (AliTrackHitsInfo *)(arr->At(i));
2636 info->fTrackID = map[info->fTrackID];
2639 if (fTrackHitsOld && fHitType&4){
2640 TClonesArray * arr = fTrackHits->GetArray();;
2641 for (Int_t i=0;i<arr->GetEntriesFast();i++){
2642 AliTrackHitsParamV2 * info = (AliTrackHitsParamV2 *)(arr->At(i));
2643 info->fTrackID = map[info->fTrackID];
2648 Bool_t AliTPC::TrackInVolume(Int_t id,Int_t track)
2650 //return bool information - is track in given volume
2651 //load only part of the track information
2652 //return true if current track is in volume
2655 if (fTrackHitsOld && fHitType&2) {
2656 TBranch * br = TreeH()->GetBranch("fTrackHitsInfo");
2657 br->GetEvent(track);
2658 AliObjectArray * ar = fTrackHitsOld->fTrackHitsInfo;
2659 for (UInt_t j=0;j<ar->GetSize();j++){
2660 if ( ((AliTrackHitsInfo*)ar->At(j))->fVolumeID==id) return kTRUE;
2664 if (fTrackHits && fHitType&4) {
2665 TBranch * br1 = TreeH()->GetBranch("fVolumes");
2666 TBranch * br2 = TreeH()->GetBranch("fNVolumes");
2667 br2->GetEvent(track);
2668 br1->GetEvent(track);
2669 Int_t *volumes = fTrackHits->GetVolumes();
2670 Int_t nvolumes = fTrackHits->GetNVolumes();
2671 if (!volumes && nvolumes>0) {
2672 printf("Problematic track\t%d\t%d",track,nvolumes);
2675 for (Int_t j=0;j<nvolumes; j++)
2676 if (volumes[j]==id) return kTRUE;
2680 TBranch * br = TreeH()->GetBranch("fSector");
2681 br->GetEvent(track);
2682 for (Int_t j=0;j<fHits->GetEntriesFast();j++){
2683 if ( ((AliTPChit*)fHits->At(j))->fSector==id) return kTRUE;
2690 //_____________________________________________________________________________
2691 void AliTPC::LoadPoints2(Int_t)
2694 // Store x, y, z of all hits in memory
2696 if (fTrackHits == 0 && fTrackHitsOld==0) return;
2699 if (fHitType&4) nhits = fTrackHits->GetEntriesFast();
2700 if (fHitType&2) nhits = fTrackHitsOld->GetEntriesFast();
2702 if (nhits == 0) return;
2703 Int_t tracks = gAlice->GetNtrack();
2704 if (fPoints == 0) fPoints = new TObjArray(tracks);
2707 Int_t *ntrk=new Int_t[tracks];
2708 Int_t *limi=new Int_t[tracks];
2709 Float_t **coor=new Float_t*[tracks];
2710 for(Int_t i=0;i<tracks;i++) {
2716 AliPoints *points = 0;
2719 Int_t chunk=nhits/4+1;
2721 // Loop over all the hits and store their position
2723 ahit = FirstHit2(-1);
2725 trk=ahit->GetTrack();
2726 if(ntrk[trk]==limi[trk]) {
2728 // Initialise a new track
2729 fp=new Float_t[3*(limi[trk]+chunk)];
2731 memcpy(fp,coor[trk],sizeof(Float_t)*3*limi[trk]);
2732 delete [] coor[trk];
2739 fp[3*ntrk[trk] ] = ahit->X();
2740 fp[3*ntrk[trk]+1] = ahit->Y();
2741 fp[3*ntrk[trk]+2] = ahit->Z();
2749 for(trk=0; trk<tracks; ++trk) {
2751 points = new AliPoints();
2752 points->SetMarkerColor(GetMarkerColor());
2753 points->SetMarkerSize(GetMarkerSize());
2754 points->SetDetector(this);
2755 points->SetParticle(trk);
2756 points->SetPolyMarker(ntrk[trk],coor[trk],GetMarkerStyle());
2757 fPoints->AddAt(points,trk);
2758 delete [] coor[trk];
2768 //_____________________________________________________________________________
2769 void AliTPC::LoadPoints3(Int_t)
2772 // Store x, y, z of all hits in memory
2773 // - only intersection point with pad row
2774 if (fTrackHits == 0) return;
2776 Int_t nhits = fTrackHits->GetEntriesFast();
2777 if (nhits == 0) return;
2778 Int_t tracks = gAlice->GetNtrack();
2779 if (fPoints == 0) fPoints = new TObjArray(2*tracks);
2780 fPoints->Expand(2*tracks);
2783 Int_t *ntrk=new Int_t[tracks];
2784 Int_t *limi=new Int_t[tracks];
2785 Float_t **coor=new Float_t*[tracks];
2786 for(Int_t i=0;i<tracks;i++) {
2792 AliPoints *points = 0;
2795 Int_t chunk=nhits/4+1;
2797 // Loop over all the hits and store their position
2799 ahit = FirstHit2(-1);
2800 //for (Int_t hit=0;hit<nhits;hit++) {
2804 // ahit = (AliHit*)fHits->UncheckedAt(hit);
2805 trk=ahit->GetTrack();
2806 Float_t x[3]={ahit->X(),ahit->Y(),ahit->Z()};
2807 Int_t index[3]={1,((AliTPChit*)ahit)->fSector,0};
2808 Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
2809 if (currentrow!=lastrow){
2810 lastrow = currentrow;
2811 //later calculate intersection point
2812 if(ntrk[trk]==limi[trk]) {
2814 // Initialise a new track
2815 fp=new Float_t[3*(limi[trk]+chunk)];
2817 memcpy(fp,coor[trk],sizeof(Float_t)*3*limi[trk]);
2818 delete [] coor[trk];
2825 fp[3*ntrk[trk] ] = ahit->X();
2826 fp[3*ntrk[trk]+1] = ahit->Y();
2827 fp[3*ntrk[trk]+2] = ahit->Z();
2834 for(trk=0; trk<tracks; ++trk) {
2836 points = new AliPoints();
2837 points->SetMarkerColor(GetMarkerColor()+1);
2838 points->SetMarkerStyle(5);
2839 points->SetMarkerSize(0.2);
2840 points->SetDetector(this);
2841 points->SetParticle(trk);
2842 // points->SetPolyMarker(ntrk[trk],coor[trk],GetMarkerStyle()20);
2843 points->SetPolyMarker(ntrk[trk],coor[trk],30);
2844 fPoints->AddAt(points,tracks+trk);
2845 delete [] coor[trk];
2856 void AliTPC::FindTrackHitsIntersection(TClonesArray * arr)
2860 //fill clones array with intersection of current point with the
2865 const Int_t kcmaxhits=30000;
2866 AliTPCFastVector * xxxx = new AliTPCFastVector(kcmaxhits*4);
2867 AliTPCFastVector & xxx = *xxxx;
2868 Int_t maxhits = kcmaxhits;
2871 AliTPChit * tpcHit=0;
2872 tpcHit = (AliTPChit*)FirstHit2(-1);
2873 Int_t currentIndex=0;
2874 Int_t lastrow=-1; //last writen row
2877 if (tpcHit==0) continue;
2878 sector=tpcHit->fSector; // sector number
2879 ipart=tpcHit->Track();
2883 Float_t x[3]={tpcHit->X(),tpcHit->Y(),tpcHit->Z()};
2884 Int_t index[3]={1,sector,0};
2885 Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
2886 if (currentrow<0) continue;
2887 if (lastrow<0) lastrow=currentrow;
2888 if (currentrow==lastrow){
2889 if ( currentIndex>=maxhits){
2891 xxx.ResizeTo(4*maxhits);
2893 xxx(currentIndex*4)=x[0];
2894 xxx(currentIndex*4+1)=x[1];
2895 xxx(currentIndex*4+2)=x[2];
2896 xxx(currentIndex*4+3)=tpcHit->fQ;
2900 if (currentIndex>2){
2912 for (Int_t index=0;index<currentIndex;index++){
2914 x=x2=x3=x4=xxx(index*4);
2922 sumy+=xxx(index*4+1);
2923 sumxy+=xxx(index*4+1)*x;
2924 sumx2y+=xxx(index*4+1)*x2;
2925 sumz+=xxx(index*4+2);
2926 sumxz+=xxx(index*4+2)*x;
2927 sumx2z+=xxx(index*4+2)*x2;
2928 sumq+=xxx(index*4+3);
2930 Float_t centralPad = (fTPCParam->GetNPads(sector,lastrow)-1)/2;
2931 Float_t det=currentIndex*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumx*sumx4-sumx2*sumx3)+
2932 sumx2*(sumx*sumx3-sumx2*sumx2);
2934 Float_t detay=sumy*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxy*sumx4-sumx2y*sumx3)+
2935 sumx2*(sumxy*sumx3-sumx2y*sumx2);
2936 Float_t detaz=sumz*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxz*sumx4-sumx2z*sumx3)+
2937 sumx2*(sumxz*sumx3-sumx2z*sumx2);
2939 Float_t detby=currentIndex*(sumxy*sumx4-sumx2y*sumx3)-sumy*(sumx*sumx4-sumx2*sumx3)+
2940 sumx2*(sumx*sumx2y-sumx2*sumxy);
2941 Float_t detbz=currentIndex*(sumxz*sumx4-sumx2z*sumx3)-sumz*(sumx*sumx4-sumx2*sumx3)+
2942 sumx2*(sumx*sumx2z-sumx2*sumxz);
2944 Float_t y=detay/det+centralPad;
2945 Float_t z=detaz/det;
2946 Float_t by=detby/det; //y angle
2947 Float_t bz=detbz/det; //z angle
2948 sumy/=Float_t(currentIndex);
2949 sumz/=Float_t(currentIndex);
2951 AliComplexCluster cl;
2957 cl.fTracks[0]=ipart;
2959 AliTPCClustersRow * row = (fClustersArray->GetRow(sector,lastrow));
2960 if (row!=0) row->InsertCluster(&cl);
2963 } //end of calculating cluster for given row
2965 } // end of loop over hits
2969 //_______________________________________________________________________________
2970 void AliTPC::Digits2Reco(Int_t firstevent,Int_t lastevent)
2972 // produces rec points from digits and writes them on the root file
2973 // AliTPCclusters.root
2975 TDirectory *cwd = gDirectory;
2978 AliTPCParamSR *dig=(AliTPCParamSR *)gDirectory->Get("75x40_100x60");
2980 printf("You are running 2 pad-length geom hits with 3 pad-length geom digits\n");
2982 dig = new AliTPCParamSR();
2986 dig=(AliTPCParamSR *)gDirectory->Get("75x40_100x60_150x60");
2989 printf("No TPC parameters found\n");
2994 cout<<"AliTPC::Digits2Reco: TPC parameteres have been set"<<endl;
2996 if(!gSystem->Getenv("CONFIG_FILE")){
2997 out=TFile::Open("AliTPCclusters.root","recreate");
3003 tmp1=gSystem->Getenv("CONFIG_FILE_PREFIX");
3004 tmp2=gSystem->Getenv("CONFIG_OUTDIR");
3005 sprintf(tmp3,"%s%s/AliTPCclusters.root",tmp1,tmp2);
3006 out=TFile::Open(tmp3,"recreate");
3010 cout<<"AliTPC::Digits2Reco - determination of rec points begins"<<endl;
3013 for(Int_t iev=firstevent;iev<lastevent+1;iev++){
3015 printf("Processing event %d\n",iev);
3016 Digits2Clusters(iev);
3018 cout<<"AliTPC::Digits2Reco - determination of rec points ended"<<endl;
3027 AliLoader* AliTPC::MakeLoader(const char* topfoldername)
3029 cout<<"AliTPC::MakeLoader ";
3031 fLoader = new AliTPCLoader(GetName(),topfoldername);
3035 cout<<"Success"<<endl;
3039 cout<<"Failure"<<endl;
3045 ////////////////////////////////////////////////////////////////////////
3046 AliTPCParam* AliTPC::LoadTPCParam(TFile *file) {
3048 // load TPC paarmeters from a given file or create new if the object
3049 // is not found there
3050 // 12/05/2003 This method should be moved to the AliTPCLoader
3051 // and one has to decide where to store the TPC parameters
3054 sprintf(paramName,"75x40_100x60_150x60");
3055 AliTPCParam *paramTPC=(AliTPCParam*)file->Get(paramName);
3057 cout<<"TPC parameters "<<paramName<<" found."<<endl;
3059 cerr<<"TPC parameters not found. Create new (they may be incorrect)."
3061 paramTPC = new AliTPCParamSR;
3065 // the older version of parameters can be accessed with this code.
3066 // In some cases, we have old parameters saved in the file but
3067 // digits were created with new parameters, it can be distinguish
3068 // by the name of TPC TreeD. The code here is just for the case
3069 // we would need to compare with old data, uncomment it if needed.
3071 // char paramName[50];
3072 // sprintf(paramName,"75x40_100x60");
3073 // AliTPCParam *paramTPC=(AliTPCParam*)in->Get(paramName);
3075 // cout<<"TPC parameters "<<paramName<<" found."<<endl;
3077 // sprintf(paramName,"75x40_100x60_150x60");
3078 // paramTPC=(AliTPCParam*)in->Get(paramName);
3080 // cout<<"TPC parameters "<<paramName<<" found."<<endl;
3082 // cerr<<"TPC parameters not found. Create new (they may be incorrect)."
3084 // paramTPC = new AliTPCParamSR;