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 if (fDebug) Info("Hits2Digits","Sector %d is active.",isec);
1459 Hits2DigitsSector(isec);
1463 if (fDebug) Info("Hits2Digits","Sector %d is NOT active.",isec);
1466 fLoader->WriteDigits("OVERWRITE");
1468 //this line prevents the crash in the similar one
1469 //on the beginning of this method
1470 //destructor attempts to reset the tree, which is deleted by the loader
1471 //need to be redesign
1472 if(GetDigitsArray()) delete GetDigitsArray();
1473 SetDigitsArray(0x0);
1477 //__________________________________________________________________
1478 void AliTPC::Hits2SDigits2(Int_t eventnumber)
1481 //-----------------------------------------------------------
1482 // summable digits - 16 bit "ADC", no noise, no saturation
1483 //-----------------------------------------------------------
1485 //----------------------------------------------------
1486 // Loop over all sectors for a single event
1487 //----------------------------------------------------
1488 // AliRunLoader* rl = (AliRunLoader*)fLoader->GetEventFolder()->FindObject(AliRunLoader::fgkRunLoaderName);
1490 AliRunLoader* rl = fLoader->GetRunLoader();
1492 rl->GetEvent(eventnumber);
1493 if (fLoader->TreeH() == 0x0)
1495 if(fLoader->LoadHits())
1497 Error("Hits2Digits","Can not load hits.");
1504 if (fLoader->TreeS() == 0x0 )
1506 fLoader->MakeTree("S");
1509 if(fDefaults == 0) SetDefaults();
1511 GenerNoise(500000); //create table with noise
1512 //setup TPCDigitsArray
1514 if(GetDigitsArray()) delete GetDigitsArray();
1517 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1518 arr->SetClass("AliSimDigits");
1519 arr->Setup(fTPCParam);
1520 arr->MakeTree(fLoader->TreeS());
1522 SetDigitsArray(arr);
1524 cerr<<"Digitizing TPC -- summable digits...\n";
1526 fDigitsSwitch=1; // summable digits
1528 // set zero suppression to "0"
1530 fTPCParam->SetZeroSup(0);
1532 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++)
1533 if (IsSectorActive(isec))
1535 // cout<<"Sector "<<isec<<" is active\n";
1536 Hits2DigitsSector(isec);
1539 fLoader->WriteSDigits("OVERWRITE");
1541 //this line prevents the crash in the similar one
1542 //on the beginning of this method
1543 //destructor attempts to reset the tree, which is deleted by the loader
1544 //need to be redesign
1545 if(GetDigitsArray()) delete GetDigitsArray();
1546 SetDigitsArray(0x0);
1548 //__________________________________________________________________
1550 void AliTPC::Hits2SDigits()
1553 //-----------------------------------------------------------
1554 // summable digits - 16 bit "ADC", no noise, no saturation
1555 //-----------------------------------------------------------
1557 //----------------------------------------------------
1558 // Loop over all sectors for a single event
1559 //----------------------------------------------------
1560 //MI change - for pp run
1561 // Int_t eventnumber = gAlice->GetEvNumber();
1562 // AliRunLoader* rl = (AliRunLoader*)fLoader->GetEventFolder()->FindObject(AliRunLoader::fgkRunLoaderName);
1563 // rl->GetEvent(eventnumber);
1564 // 12/05/2003 This method is obsolete and not used. It should be redesingned
1567 if (fLoader->TreeH() == 0x0)
1569 if(fLoader->LoadHits())
1571 Error("Hits2Digits","Can not load hits.");
1576 if(fDefaults == 0) SetDefaults();
1577 GenerNoise(500000); //create table with noise
1579 //setup TPCDigitsArray
1581 if(GetDigitsArray()) delete GetDigitsArray();
1583 if (fLoader->TreeS() == 0x0 )
1585 fLoader->MakeTree("S");
1588 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1589 arr->SetClass("AliSimDigits");
1590 arr->Setup(fTPCParam);
1591 arr->MakeTree(fLoader->TreeS());
1592 SetDigitsArray(arr);
1594 cerr<<"Digitizing TPC -- summable digits...\n";
1596 // fDigitsSwitch=1; // summable digits -for the moment direct
1598 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++) if (IsSectorActive(isec)) Hits2DigitsSector(isec);
1602 cout<<"Why method TPC::Hits2SDigits writes digits and not sdigits? skowron\n";
1603 fLoader->WriteDigits("OVERWRITE");
1605 //_____________________________________________________________________________
1607 void AliTPC::Hits2DigitsSector(Int_t isec)
1609 //-------------------------------------------------------------------
1610 // TPC conversion from hits to digits.
1611 //-------------------------------------------------------------------
1613 //-----------------------------------------------------------------
1614 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1615 //-----------------------------------------------------------------
1617 //-------------------------------------------------------
1618 // Get the access to the track hits
1619 //-------------------------------------------------------
1621 // check if the parameters are set - important if one calls this method
1622 // directly, not from the Hits2Digits
1624 if(fDefaults == 0) SetDefaults();
1626 TTree *tH = TreeH(); // pointer to the hits tree
1629 Fatal("Hits2DigitsSector","Can not find TreeH in folder");
1633 Stat_t ntracks = tH->GetEntries();
1637 //-------------------------------------------
1638 // Only if there are any tracks...
1639 //-------------------------------------------
1643 //printf("*** Processing sector number %d ***\n",isec);
1645 Int_t nrows =fTPCParam->GetNRow(isec);
1647 row= new TObjArray* [nrows+2]; // 2 extra rows for cross talk
1649 MakeSector(isec,nrows,tH,ntracks,row);
1651 //--------------------------------------------------------
1652 // Digitize this sector, row by row
1653 // row[i] is the pointer to the TObjArray of AliTPCFastVectors,
1654 // each one containing electrons accepted on this
1655 // row, assigned into tracks
1656 //--------------------------------------------------------
1660 if (fDigitsArray->GetTree()==0)
1662 Fatal("Hits2DigitsSector","Tree not set in fDigitsArray");
1665 for (i=0;i<nrows;i++){
1667 AliDigits * dig = fDigitsArray->CreateRow(isec,i);
1669 DigitizeRow(i,isec,row);
1671 fDigitsArray->StoreRow(isec,i);
1673 Int_t ndig = dig->GetDigitSize();
1676 printf("*** Sector, row, compressed digits %d %d %d ***\n",isec,i,ndig);
1678 fDigitsArray->ClearRow(isec,i);
1681 } // end of the sector digitization
1683 for(i=0;i<nrows+2;i++){
1688 delete [] row; // delete the array of pointers to TObjArray-s
1692 } // end of Hits2DigitsSector
1695 //_____________________________________________________________________________
1696 void AliTPC::DigitizeRow(Int_t irow,Int_t isec,TObjArray **rows)
1698 //-----------------------------------------------------------
1699 // Single row digitization, coupling from the neighbouring
1700 // rows taken into account
1701 //-----------------------------------------------------------
1703 //-----------------------------------------------------------------
1704 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1705 // Modified: Marian Ivanov GSI Darmstadt, m.ivanov@gsi.de
1706 //-----------------------------------------------------------------
1709 Float_t zerosup = fTPCParam->GetZeroSup();
1710 // Int_t nrows =fTPCParam->GetNRow(isec);
1711 fCurrentIndex[1]= isec;
1714 Int_t nofPads = fTPCParam->GetNPads(isec,irow);
1715 Int_t nofTbins = fTPCParam->GetMaxTBin();
1716 Int_t indexRange[4];
1718 // Integrated signal for this row
1719 // and a single track signal
1722 AliTPCFastMatrix *m1 = new AliTPCFastMatrix(0,nofPads,0,nofTbins); // integrated
1723 AliTPCFastMatrix *m2 = new AliTPCFastMatrix(0,nofPads,0,nofTbins); // single
1725 AliTPCFastMatrix &total = *m1;
1727 // Array of pointers to the label-signal list
1729 Int_t nofDigits = nofPads*nofTbins; // number of digits for this row
1730 Float_t **pList = new Float_t* [nofDigits];
1734 for(lp=0;lp<nofDigits;lp++)pList[lp]=0; // set all pointers to NULL
1738 //Int_t row1 = TMath::Max(irow-fTPCParam->GetNCrossRows(),0);
1739 //Int_t row2 = TMath::Min(irow+fTPCParam->GetNCrossRows(),nrows-1);
1742 for (Int_t row= row1;row<=row2;row++){
1743 Int_t nTracks= rows[row]->GetEntries();
1744 for (i1=0;i1<nTracks;i1++){
1745 fCurrentIndex[2]= row;
1746 fCurrentIndex[3]=irow+1;
1748 m2->Zero(); // clear single track signal matrix
1749 Float_t trackLabel = GetSignal(rows[row],i1,m2,m1,indexRange);
1750 GetList(trackLabel,nofPads,m2,indexRange,pList);
1752 else GetSignal(rows[row],i1,0,m1,indexRange);
1758 AliDigits *dig = fDigitsArray->GetRow(isec,irow);
1760 Float_t fzerosup = zerosup+0.5;
1761 for(Int_t it=0;it<nofTbins;it++){
1762 Float_t *pq = &(total.UncheckedAt(0,it));
1763 for(Int_t ip=0;ip<nofPads;ip++){
1767 if(fDigitsSwitch == 0){
1769 if(q <=fzerosup) continue; // do not fill zeros
1771 if(q > fTPCParam->GetADCSat()) q = fTPCParam->GetADCSat(); // saturation
1776 if(q <= 0.) continue; // do not fill zeros
1777 if(q>2000.) q=2000.;
1783 // "real" signal or electronic noise (list = -1)?
1786 for(Int_t j1=0;j1<3;j1++){
1787 tracks[j1] = (pList[gi]) ?(Int_t)(*(pList[gi]+j1)) : -2;
1792 <A NAME="AliDigits"></A>
1793 using of AliDigits object
1796 dig->SetDigitFast((Short_t)q,it,ip);
1797 if (fDigitsArray->IsSimulated())
1799 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[0],it,ip,0);
1800 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[1],it,ip,1);
1801 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[2],it,ip,2);
1805 } // end of loop over time buckets
1806 } // end of lop over pads
1809 // This row has been digitized, delete nonused stuff
1812 for(lp=0;lp<nofDigits;lp++){
1813 if(pList[lp]) delete [] pList[lp];
1822 } // end of DigitizeRow
1824 //_____________________________________________________________________________
1826 Float_t AliTPC::GetSignal(TObjArray *p1, Int_t ntr,
1827 AliTPCFastMatrix *m1, AliTPCFastMatrix *m2,Int_t *indexRange)
1830 //---------------------------------------------------------------
1831 // Calculates 2-D signal (pad,time) for a single track,
1832 // returns a pointer to the signal matrix and the track label
1833 // No digitization is performed at this level!!!
1834 //---------------------------------------------------------------
1836 //-----------------------------------------------------------------
1837 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1838 // Modified: Marian Ivanov
1839 //-----------------------------------------------------------------
1841 AliTPCFastVector *tv;
1843 tv = (AliTPCFastVector*)p1->At(ntr); // pointer to a track
1844 AliTPCFastVector &v = *tv;
1846 Float_t label = v(0);
1847 Int_t centralPad = (fTPCParam->GetNPads(fCurrentIndex[1],fCurrentIndex[3]-1)-1)/2;
1849 Int_t nElectrons = (tv->GetNrows()-1)/4;
1850 indexRange[0]=9999; // min pad
1851 indexRange[1]=-1; // max pad
1852 indexRange[2]=9999; //min time
1853 indexRange[3]=-1; // max time
1855 AliTPCFastMatrix &signal = *m1;
1856 AliTPCFastMatrix &total = *m2;
1858 // Loop over all electrons
1860 for(Int_t nel=0; nel<nElectrons; nel++){
1862 Float_t aval = v(idx+4);
1863 Float_t eltoadcfac=aval*fTPCParam->GetTotalNormFac();
1864 Float_t xyz[3]={v(idx+1),v(idx+2),v(idx+3)};
1865 Int_t n = ((AliTPCParamSR*)fTPCParam)->CalcResponseFast(xyz,fCurrentIndex,fCurrentIndex[3]);
1867 Int_t *index = fTPCParam->GetResBin(0);
1868 Float_t *weight = & (fTPCParam->GetResWeight(0));
1870 if (n>0) for (Int_t i =0; i<n; i++){
1871 Int_t pad=index[1]+centralPad; //in digit coordinates central pad has coordinate 0
1874 Int_t time=index[2];
1875 Float_t qweight = *(weight)*eltoadcfac;
1877 if (m1!=0) signal.UncheckedAt(pad,time)+=qweight;
1878 total.UncheckedAt(pad,time)+=qweight;
1879 if (indexRange[0]>pad) indexRange[0]=pad;
1880 if (indexRange[1]<pad) indexRange[1]=pad;
1881 if (indexRange[2]>time) indexRange[2]=time;
1882 if (indexRange[3]<time) indexRange[3]=time;
1889 } // end of loop over electrons
1891 return label; // returns track label when finished
1894 //_____________________________________________________________________________
1895 void AliTPC::GetList(Float_t label,Int_t np,AliTPCFastMatrix *m,
1896 Int_t *indexRange, Float_t **pList)
1898 //----------------------------------------------------------------------
1899 // Updates the list of tracks contributing to digits for a given row
1900 //----------------------------------------------------------------------
1902 //-----------------------------------------------------------------
1903 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1904 //-----------------------------------------------------------------
1906 AliTPCFastMatrix &signal = *m;
1908 // lop over nonzero digits
1910 for(Int_t it=indexRange[2];it<indexRange[3]+1;it++){
1911 for(Int_t ip=indexRange[0];ip<indexRange[1]+1;ip++){
1914 // accept only the contribution larger than 500 electrons (1/2 s_noise)
1916 if(signal(ip,it)<0.5) continue;
1919 Int_t globalIndex = it*np+ip; // globalIndex starts from 0!
1921 if(!pList[globalIndex]){
1924 // Create new list (6 elements - 3 signals and 3 labels),
1927 pList[globalIndex] = new Float_t [6];
1931 *pList[globalIndex] = -1.;
1932 *(pList[globalIndex]+1) = -1.;
1933 *(pList[globalIndex]+2) = -1.;
1934 *(pList[globalIndex]+3) = -1.;
1935 *(pList[globalIndex]+4) = -1.;
1936 *(pList[globalIndex]+5) = -1.;
1939 *pList[globalIndex] = label;
1940 *(pList[globalIndex]+3) = signal(ip,it);
1944 // check the signal magnitude
1946 Float_t highest = *(pList[globalIndex]+3);
1947 Float_t middle = *(pList[globalIndex]+4);
1948 Float_t lowest = *(pList[globalIndex]+5);
1951 // compare the new signal with already existing list
1954 if(signal(ip,it)<lowest) continue; // neglect this track
1958 if (signal(ip,it)>highest){
1959 *(pList[globalIndex]+5) = middle;
1960 *(pList[globalIndex]+4) = highest;
1961 *(pList[globalIndex]+3) = signal(ip,it);
1963 *(pList[globalIndex]+2) = *(pList[globalIndex]+1);
1964 *(pList[globalIndex]+1) = *pList[globalIndex];
1965 *pList[globalIndex] = label;
1967 else if (signal(ip,it)>middle){
1968 *(pList[globalIndex]+5) = middle;
1969 *(pList[globalIndex]+4) = signal(ip,it);
1971 *(pList[globalIndex]+2) = *(pList[globalIndex]+1);
1972 *(pList[globalIndex]+1) = label;
1975 *(pList[globalIndex]+5) = signal(ip,it);
1976 *(pList[globalIndex]+2) = label;
1980 } // end of loop over pads
1981 } // end of loop over time bins
1986 //___________________________________________________________________
1987 void AliTPC::MakeSector(Int_t isec,Int_t nrows,TTree *TH,
1988 Stat_t ntracks,TObjArray **row)
1991 //-----------------------------------------------------------------
1992 // Prepares the sector digitization, creates the vectors of
1993 // tracks for each row of this sector. The track vector
1994 // contains the track label and the position of electrons.
1995 //-----------------------------------------------------------------
1997 //-----------------------------------------------------------------
1998 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1999 //-----------------------------------------------------------------
2001 Float_t gasgain = fTPCParam->GetGasGain();
2005 AliTPChit *tpcHit; // pointer to a sigle TPC hit
2008 if (fHitType>1) branch = TH->GetBranch("TPC2");
2009 else branch = TH->GetBranch("TPC");
2012 //----------------------------------------------
2013 // Create TObjArray-s, one for each row,
2014 // each TObjArray will store the AliTPCFastVectors
2015 // of electrons, one AliTPCFastVectors per each track.
2016 //----------------------------------------------
2018 Int_t *nofElectrons = new Int_t [nrows+2]; // electron counter for each row
2019 AliTPCFastVector **tracks = new AliTPCFastVector* [nrows+2]; //pointers to the track vectors
2021 for(i=0; i<nrows+2; i++){
2022 row[i] = new TObjArray;
2029 //--------------------------------------------------------------------
2030 // Loop over tracks, the "track" contains the full history
2031 //--------------------------------------------------------------------
2033 Int_t previousTrack,currentTrack;
2034 previousTrack = -1; // nothing to store so far!
2036 for(Int_t track=0;track<ntracks;track++){
2037 Bool_t isInSector=kTRUE;
2039 isInSector = TrackInVolume(isec,track);
2040 if (!isInSector) continue;
2042 branch->GetEntry(track); // get next track
2046 tpcHit = (AliTPChit*)FirstHit(-1);
2048 //--------------------------------------------------------------
2050 //--------------------------------------------------------------
2055 Int_t sector=tpcHit->fSector; // sector number
2057 tpcHit = (AliTPChit*) NextHit();
2061 currentTrack = tpcHit->Track(); // track number
2064 if(currentTrack != previousTrack){
2066 // store already filled fTrack
2068 for(i=0;i<nrows+2;i++){
2069 if(previousTrack != -1){
2070 if(nofElectrons[i]>0){
2071 AliTPCFastVector &v = *tracks[i];
2072 v(0) = previousTrack;
2073 tracks[i]->ResizeTo(4*nofElectrons[i]+1); // shrink if necessary
2074 row[i]->Add(tracks[i]);
2077 delete tracks[i]; // delete empty AliTPCFastVector
2083 tracks[i] = new AliTPCFastVector(481); // AliTPCFastVectors for the next fTrack
2085 } // end of loop over rows
2087 previousTrack=currentTrack; // update track label
2090 Int_t qI = (Int_t) (tpcHit->fQ); // energy loss (number of electrons)
2092 //---------------------------------------------------
2093 // Calculate the electron attachment probability
2094 //---------------------------------------------------
2097 Float_t time = 1.e6*(fTPCParam->GetZLength()-TMath::Abs(tpcHit->Z()))
2098 /fTPCParam->GetDriftV();
2100 Float_t attProb = fTPCParam->GetAttCoef()*
2101 fTPCParam->GetOxyCont()*time; // fraction!
2103 //-----------------------------------------------
2104 // Loop over electrons
2105 //-----------------------------------------------
2108 for(Int_t nel=0;nel<qI;nel++){
2109 // skip if electron lost due to the attachment
2110 if((gRandom->Rndm(0)) < attProb) continue; // electron lost!
2115 // protection for the nonphysical avalanche size (10**6 maximum)
2117 Double_t rn=TMath::Max(gRandom->Rndm(0),1.93e-22);
2118 xyz[3]= (Float_t) (-gasgain*TMath::Log(rn));
2121 TransportElectron(xyz,index);
2123 fTPCParam->GetPadRow(xyz,index);
2124 // row 0 - cross talk from the innermost row
2125 // row fNRow+1 cross talk from the outermost row
2126 rowNumber = index[2]+1;
2127 //transform position to local digit coordinates
2128 //relative to nearest pad row
2129 if ((rowNumber<0)||rowNumber>fTPCParam->GetNRow(isec)+1) continue;
2131 if (isec <fTPCParam->GetNInnerSector()) {
2132 x1 = xyz[1]*fTPCParam->GetInnerPadPitchWidth();
2133 y1 = fTPCParam->GetYInner(rowNumber);
2136 x1=xyz[1]*fTPCParam->GetOuterPadPitchWidth();
2137 y1 = fTPCParam->GetYOuter(rowNumber);
2139 // gain inefficiency at the wires edges - linear
2142 if(x1>y1) xyz[3]*=TMath::Max(1.e-6,(y1-x1+1.));
2144 nofElectrons[rowNumber]++;
2145 //----------------------------------
2146 // Expand vector if necessary
2147 //----------------------------------
2148 if(nofElectrons[rowNumber]>120){
2149 Int_t range = tracks[rowNumber]->GetNrows();
2150 if((nofElectrons[rowNumber])>(range-1)/4){
2152 tracks[rowNumber]->ResizeTo(range+400); // Add 100 electrons
2156 AliTPCFastVector &v = *tracks[rowNumber];
2157 Int_t idx = 4*nofElectrons[rowNumber]-3;
2158 Real_t * position = &(((AliTPCFastVector&)v).UncheckedAt(idx)); //make code faster
2159 memcpy(position,xyz,4*sizeof(Float_t));
2161 } // end of loop over electrons
2163 tpcHit = (AliTPChit*)NextHit();
2165 } // end of loop over hits
2166 } // end of loop over tracks
2169 // store remaining track (the last one) if not empty
2172 for(i=0;i<nrows+2;i++){
2173 if(nofElectrons[i]>0){
2174 AliTPCFastVector &v = *tracks[i];
2175 v(0) = previousTrack;
2176 tracks[i]->ResizeTo(4*nofElectrons[i]+1); // shrink if necessary
2177 row[i]->Add(tracks[i]);
2186 delete [] nofElectrons;
2189 } // end of MakeSector
2192 //_____________________________________________________________________________
2196 // Initialise TPC detector after definition of geometry
2201 printf("\n%s: ",ClassName());
2202 for(i=0;i<35;i++) printf("*");
2203 printf(" TPC_INIT ");
2204 for(i=0;i<35;i++) printf("*");
2205 printf("\n%s: ",ClassName());
2207 for(i=0;i<80;i++) printf("*");
2212 //_____________________________________________________________________________
2213 void AliTPC::MakeBranch(Option_t* option)
2216 // Create Tree branches for the TPC.
2218 if(GetDebug()) Info("MakeBranch","");
2219 Int_t buffersize = 4000;
2220 char branchname[10];
2221 sprintf(branchname,"%s",GetName());
2223 const char *h = strstr(option,"H");
2225 if ( h && (fHitType<=1) && (fHits == 0x0)) fHits = new TClonesArray("AliTPChit", 176);//skowron 20.06.03
2227 AliDetector::MakeBranch(option);
2229 const char *d = strstr(option,"D");
2231 if (fDigits && fLoader->TreeD() && d)
2233 MakeBranchInTree(gAlice->TreeD(), branchname, &fDigits, buffersize, 0);
2236 if (fHitType>1) MakeBranch2(option,0); // MI change 14.09.2000
2239 //_____________________________________________________________________________
2240 void AliTPC::ResetDigits()
2243 // Reset number of digits and the digits array for this detector
2246 if (fDigits) fDigits->Clear();
2249 //_____________________________________________________________________________
2250 void AliTPC::SetSecAL(Int_t sec)
2252 //---------------------------------------------------
2253 // Activate/deactivate selection for lower sectors
2254 //---------------------------------------------------
2256 //-----------------------------------------------------------------
2257 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2258 //-----------------------------------------------------------------
2262 //_____________________________________________________________________________
2263 void AliTPC::SetSecAU(Int_t sec)
2265 //----------------------------------------------------
2266 // Activate/deactivate selection for upper sectors
2267 //---------------------------------------------------
2269 //-----------------------------------------------------------------
2270 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2271 //-----------------------------------------------------------------
2275 //_____________________________________________________________________________
2276 void AliTPC::SetSecLows(Int_t s1,Int_t s2,Int_t s3,Int_t s4,Int_t s5, Int_t s6)
2278 //----------------------------------------
2279 // Select active lower sectors
2280 //----------------------------------------
2282 //-----------------------------------------------------------------
2283 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2284 //-----------------------------------------------------------------
2294 //_____________________________________________________________________________
2295 void AliTPC::SetSecUps(Int_t s1,Int_t s2,Int_t s3,Int_t s4,Int_t s5, Int_t s6,
2296 Int_t s7, Int_t s8 ,Int_t s9 ,Int_t s10,
2297 Int_t s11 , Int_t s12)
2299 //--------------------------------
2300 // Select active upper sectors
2301 //--------------------------------
2303 //-----------------------------------------------------------------
2304 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2305 //-----------------------------------------------------------------
2321 //_____________________________________________________________________________
2322 void AliTPC::SetSens(Int_t sens)
2325 //-------------------------------------------------------------
2326 // Activates/deactivates the sensitive strips at the center of
2327 // the pad row -- this is for the space-point resolution calculations
2328 //-------------------------------------------------------------
2330 //-----------------------------------------------------------------
2331 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2332 //-----------------------------------------------------------------
2338 void AliTPC::SetSide(Float_t side=0.)
2340 // choice of the TPC side
2345 //____________________________________________________________________________
2346 void AliTPC::SetGasMixt(Int_t nc,Int_t c1,Int_t c2,Int_t c3,Float_t p1,
2347 Float_t p2,Float_t p3)
2350 // gax mixture definition
2364 //_____________________________________________________________________________
2366 void AliTPC::TransportElectron(Float_t *xyz, Int_t *index)
2369 // electron transport taking into account:
2371 // 2.ExB at the wires
2372 // 3. nonisochronity
2374 // xyz and index must be already transformed to system 1
2377 fTPCParam->Transform1to2(xyz,index);
2380 Float_t driftl=xyz[2];
2381 if(driftl<0.01) driftl=0.01;
2382 driftl=TMath::Sqrt(driftl);
2383 Float_t sigT = driftl*(fTPCParam->GetDiffT());
2384 Float_t sigL = driftl*(fTPCParam->GetDiffL());
2385 xyz[0]=gRandom->Gaus(xyz[0],sigT);
2386 xyz[1]=gRandom->Gaus(xyz[1],sigT);
2387 xyz[2]=gRandom->Gaus(xyz[2],sigL);
2391 if (fTPCParam->GetMWPCReadout()==kTRUE){
2392 Float_t dx = fTPCParam->Transform2to2NearestWire(xyz,index);
2393 xyz[1]+=dx*(fTPCParam->GetOmegaTau());
2395 //add nonisochronity (not implemented yet)
2398 ClassImp(AliTPCdigit)
2400 //_____________________________________________________________________________
2401 AliTPCdigit::AliTPCdigit(Int_t *tracks, Int_t *digits):
2405 // Creates a TPC digit object
2407 fSector = digits[0];
2408 fPadRow = digits[1];
2411 fSignal = digits[4];
2417 //_____________________________________________________________________________
2418 AliTPChit::AliTPChit(Int_t shunt, Int_t track, Int_t *vol, Float_t *hits):
2422 // Creates a TPC hit object
2432 //________________________________________________________________________
2433 // Additional code because of the AliTPCTrackHitsV2
2435 void AliTPC::MakeBranch2(Option_t *option,const char *file)
2438 // Create a new branch in the current Root Tree
2439 // The branch of fHits is automatically split
2440 // MI change 14.09.2000
2441 if(GetDebug()) Info("MakeBranch2","");
2442 if (fHitType<2) return;
2443 char branchname[10];
2444 sprintf(branchname,"%s2",GetName());
2446 // Get the pointer to the header
2447 const char *cH = strstr(option,"H");
2449 if (fTrackHits && TreeH() && cH && fHitType&4)
2451 if(GetDebug()) Info("MakeBranch2","Making branch for Type 4 Hits");
2452 TreeH()->Branch(branchname,"AliTPCTrackHitsV2",&fTrackHits,fBufferSize,99);
2455 if (fTrackHitsOld && TreeH() && cH && fHitType&2)
2457 if(GetDebug()) Info("MakeBranch2","Making branch for Type 2 Hits");
2458 AliObjectBranch * branch = new AliObjectBranch(branchname,"AliTPCTrackHits",&fTrackHitsOld,
2459 TreeH(),fBufferSize,99);
2460 TreeH()->GetListOfBranches()->Add(branch);
2464 void AliTPC::SetTreeAddress()
2466 //Sets tree address for hits
2469 if (fHits == 0x0 ) fHits = new TClonesArray("AliTPChit", 176);//skowron 20.06.03
2470 AliDetector::SetTreeAddress();
2472 if (fHitType>1) SetTreeAddress2();
2475 void AliTPC::SetTreeAddress2()
2478 // Set branch address for the TrackHits Tree
2480 if(GetDebug()) Info("SetTreeAddress2","");
2483 char branchname[20];
2484 sprintf(branchname,"%s2",GetName());
2486 // Branch address for hit tree
2487 TTree *treeH = TreeH();
2488 if ((treeH)&&(fHitType&4)) {
2489 branch = treeH->GetBranch(branchname);
2492 branch->SetAddress(&fTrackHits);
2493 if (GetDebug()) Info("SetTreeAddress2","fHitType&4 Setting");
2496 if (GetDebug()) Info("SetTreeAddress2","fHitType&4 Failed (can not find branch)");
2499 if ((treeH)&&(fHitType&2)) {
2500 branch = treeH->GetBranch(branchname);
2503 branch->SetAddress(&fTrackHitsOld);
2504 if (GetDebug()) Info("SetTreeAddress2","fHitType&2 Setting");
2506 else if (GetDebug())
2507 Info("SetTreeAddress2","fHitType&2 Failed (can not find branch)");
2509 //set address to TREETR
2511 TTree *treeTR = TreeTR();
2512 if (treeTR && fTrackReferences) {
2513 branch = treeTR->GetBranch(GetName());
2514 if (branch) branch->SetAddress(&fTrackReferences);
2519 void AliTPC::FinishPrimary()
2521 if (fTrackHits &&fHitType&4) fTrackHits->FlushHitStack();
2522 if (fTrackHitsOld && fHitType&2) fTrackHitsOld->FlushHitStack();
2526 void AliTPC::AddHit2(Int_t track, Int_t *vol, Float_t *hits)
2529 // add hit to the list
2532 int primary = gAlice->GetPrimary(track);
2533 gAlice->Particle(primary)->SetBit(kKeepBit);
2537 gAlice->FlagTrack(track);
2539 //AliTPChit *hit = (AliTPChit*)fHits->UncheckedAt(fNhits-1);
2540 //if (hit->fTrack!=rtrack)
2541 // cout<<"bad track number\n";
2542 if (fTrackHits && fHitType&4)
2543 fTrackHits->AddHitKartez(vol[0],rtrack, hits[0],
2544 hits[1],hits[2],(Int_t)hits[3]);
2545 if (fTrackHitsOld &&fHitType&2 )
2546 fTrackHitsOld->AddHitKartez(vol[0],rtrack, hits[0],
2547 hits[1],hits[2],(Int_t)hits[3]);
2551 void AliTPC::ResetHits()
2553 if (fHitType&1) AliDetector::ResetHits();
2554 if (fHitType>1) ResetHits2();
2557 void AliTPC::ResetHits2()
2561 if (fTrackHits && fHitType&4) fTrackHits->Clear();
2562 if (fTrackHitsOld && fHitType&2) fTrackHitsOld->Clear();
2566 AliHit* AliTPC::FirstHit(Int_t track)
2568 if (fHitType>1) return FirstHit2(track);
2569 return AliDetector::FirstHit(track);
2571 AliHit* AliTPC::NextHit()
2573 if (fHitType>1) return NextHit2();
2575 return AliDetector::NextHit();
2578 AliHit* AliTPC::FirstHit2(Int_t track)
2581 // Initialise the hit iterator
2582 // Return the address of the first hit for track
2583 // If track>=0 the track is read from disk
2584 // while if track<0 the first hit of the current
2585 // track is returned
2588 gAlice->ResetHits();
2589 TreeH()->GetEvent(track);
2592 if (fTrackHits && fHitType&4) {
2593 fTrackHits->First();
2594 return fTrackHits->GetHit();
2596 if (fTrackHitsOld && fHitType&2) {
2597 fTrackHitsOld->First();
2598 return fTrackHitsOld->GetHit();
2604 AliHit* AliTPC::NextHit2()
2607 //Return the next hit for the current track
2610 if (fTrackHitsOld && fHitType&2) {
2611 fTrackHitsOld->Next();
2612 return fTrackHitsOld->GetHit();
2616 return fTrackHits->GetHit();
2622 void AliTPC::LoadPoints(Int_t)
2626 /* if(fHitType==1) return AliDetector::LoadPoints(a);
2629 if(fHitType==1) AliDetector::LoadPoints(a);
2630 else LoadPoints2(a);
2637 void AliTPC::RemapTrackHitIDs(Int_t *map)
2639 if (!fTrackHits) return;
2641 if (fTrackHitsOld && fHitType&2){
2642 AliObjectArray * arr = fTrackHitsOld->fTrackHitsInfo;
2643 for (UInt_t i=0;i<arr->GetSize();i++){
2644 AliTrackHitsInfo * info = (AliTrackHitsInfo *)(arr->At(i));
2645 info->fTrackID = map[info->fTrackID];
2648 if (fTrackHitsOld && fHitType&4){
2649 TClonesArray * arr = fTrackHits->GetArray();;
2650 for (Int_t i=0;i<arr->GetEntriesFast();i++){
2651 AliTrackHitsParamV2 * info = (AliTrackHitsParamV2 *)(arr->At(i));
2652 info->fTrackID = map[info->fTrackID];
2657 Bool_t AliTPC::TrackInVolume(Int_t id,Int_t track)
2659 //return bool information - is track in given volume
2660 //load only part of the track information
2661 //return true if current track is in volume
2664 if (fTrackHitsOld && fHitType&2) {
2665 TBranch * br = TreeH()->GetBranch("fTrackHitsInfo");
2666 br->GetEvent(track);
2667 AliObjectArray * ar = fTrackHitsOld->fTrackHitsInfo;
2668 for (UInt_t j=0;j<ar->GetSize();j++){
2669 if ( ((AliTrackHitsInfo*)ar->At(j))->fVolumeID==id) return kTRUE;
2673 if (fTrackHits && fHitType&4) {
2674 TBranch * br1 = TreeH()->GetBranch("fVolumes");
2675 TBranch * br2 = TreeH()->GetBranch("fNVolumes");
2676 br2->GetEvent(track);
2677 br1->GetEvent(track);
2678 Int_t *volumes = fTrackHits->GetVolumes();
2679 Int_t nvolumes = fTrackHits->GetNVolumes();
2680 if (!volumes && nvolumes>0) {
2681 printf("Problematic track\t%d\t%d",track,nvolumes);
2684 for (Int_t j=0;j<nvolumes; j++)
2685 if (volumes[j]==id) return kTRUE;
2689 TBranch * br = TreeH()->GetBranch("fSector");
2690 br->GetEvent(track);
2691 for (Int_t j=0;j<fHits->GetEntriesFast();j++){
2692 if ( ((AliTPChit*)fHits->At(j))->fSector==id) return kTRUE;
2699 //_____________________________________________________________________________
2700 void AliTPC::LoadPoints2(Int_t)
2703 // Store x, y, z of all hits in memory
2705 if (fTrackHits == 0 && fTrackHitsOld==0) return;
2708 if (fHitType&4) nhits = fTrackHits->GetEntriesFast();
2709 if (fHitType&2) nhits = fTrackHitsOld->GetEntriesFast();
2711 if (nhits == 0) return;
2712 Int_t tracks = gAlice->GetNtrack();
2713 if (fPoints == 0) fPoints = new TObjArray(tracks);
2716 Int_t *ntrk=new Int_t[tracks];
2717 Int_t *limi=new Int_t[tracks];
2718 Float_t **coor=new Float_t*[tracks];
2719 for(Int_t i=0;i<tracks;i++) {
2725 AliPoints *points = 0;
2728 Int_t chunk=nhits/4+1;
2730 // Loop over all the hits and store their position
2732 ahit = FirstHit2(-1);
2734 trk=ahit->GetTrack();
2735 if(ntrk[trk]==limi[trk]) {
2737 // Initialise a new track
2738 fp=new Float_t[3*(limi[trk]+chunk)];
2740 memcpy(fp,coor[trk],sizeof(Float_t)*3*limi[trk]);
2741 delete [] coor[trk];
2748 fp[3*ntrk[trk] ] = ahit->X();
2749 fp[3*ntrk[trk]+1] = ahit->Y();
2750 fp[3*ntrk[trk]+2] = ahit->Z();
2758 for(trk=0; trk<tracks; ++trk) {
2760 points = new AliPoints();
2761 points->SetMarkerColor(GetMarkerColor());
2762 points->SetMarkerSize(GetMarkerSize());
2763 points->SetDetector(this);
2764 points->SetParticle(trk);
2765 points->SetPolyMarker(ntrk[trk],coor[trk],GetMarkerStyle());
2766 fPoints->AddAt(points,trk);
2767 delete [] coor[trk];
2777 //_____________________________________________________________________________
2778 void AliTPC::LoadPoints3(Int_t)
2781 // Store x, y, z of all hits in memory
2782 // - only intersection point with pad row
2783 if (fTrackHits == 0) return;
2785 Int_t nhits = fTrackHits->GetEntriesFast();
2786 if (nhits == 0) return;
2787 Int_t tracks = gAlice->GetNtrack();
2788 if (fPoints == 0) fPoints = new TObjArray(2*tracks);
2789 fPoints->Expand(2*tracks);
2792 Int_t *ntrk=new Int_t[tracks];
2793 Int_t *limi=new Int_t[tracks];
2794 Float_t **coor=new Float_t*[tracks];
2795 for(Int_t i=0;i<tracks;i++) {
2801 AliPoints *points = 0;
2804 Int_t chunk=nhits/4+1;
2806 // Loop over all the hits and store their position
2808 ahit = FirstHit2(-1);
2809 //for (Int_t hit=0;hit<nhits;hit++) {
2813 // ahit = (AliHit*)fHits->UncheckedAt(hit);
2814 trk=ahit->GetTrack();
2815 Float_t x[3]={ahit->X(),ahit->Y(),ahit->Z()};
2816 Int_t index[3]={1,((AliTPChit*)ahit)->fSector,0};
2817 Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
2818 if (currentrow!=lastrow){
2819 lastrow = currentrow;
2820 //later calculate intersection point
2821 if(ntrk[trk]==limi[trk]) {
2823 // Initialise a new track
2824 fp=new Float_t[3*(limi[trk]+chunk)];
2826 memcpy(fp,coor[trk],sizeof(Float_t)*3*limi[trk]);
2827 delete [] coor[trk];
2834 fp[3*ntrk[trk] ] = ahit->X();
2835 fp[3*ntrk[trk]+1] = ahit->Y();
2836 fp[3*ntrk[trk]+2] = ahit->Z();
2843 for(trk=0; trk<tracks; ++trk) {
2845 points = new AliPoints();
2846 points->SetMarkerColor(GetMarkerColor()+1);
2847 points->SetMarkerStyle(5);
2848 points->SetMarkerSize(0.2);
2849 points->SetDetector(this);
2850 points->SetParticle(trk);
2851 // points->SetPolyMarker(ntrk[trk],coor[trk],GetMarkerStyle()20);
2852 points->SetPolyMarker(ntrk[trk],coor[trk],30);
2853 fPoints->AddAt(points,tracks+trk);
2854 delete [] coor[trk];
2865 void AliTPC::FindTrackHitsIntersection(TClonesArray * arr)
2869 //fill clones array with intersection of current point with the
2874 const Int_t kcmaxhits=30000;
2875 AliTPCFastVector * xxxx = new AliTPCFastVector(kcmaxhits*4);
2876 AliTPCFastVector & xxx = *xxxx;
2877 Int_t maxhits = kcmaxhits;
2880 AliTPChit * tpcHit=0;
2881 tpcHit = (AliTPChit*)FirstHit2(-1);
2882 Int_t currentIndex=0;
2883 Int_t lastrow=-1; //last writen row
2886 if (tpcHit==0) continue;
2887 sector=tpcHit->fSector; // sector number
2888 ipart=tpcHit->Track();
2892 Float_t x[3]={tpcHit->X(),tpcHit->Y(),tpcHit->Z()};
2893 Int_t index[3]={1,sector,0};
2894 Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
2895 if (currentrow<0) continue;
2896 if (lastrow<0) lastrow=currentrow;
2897 if (currentrow==lastrow){
2898 if ( currentIndex>=maxhits){
2900 xxx.ResizeTo(4*maxhits);
2902 xxx(currentIndex*4)=x[0];
2903 xxx(currentIndex*4+1)=x[1];
2904 xxx(currentIndex*4+2)=x[2];
2905 xxx(currentIndex*4+3)=tpcHit->fQ;
2909 if (currentIndex>2){
2921 for (Int_t index=0;index<currentIndex;index++){
2923 x=x2=x3=x4=xxx(index*4);
2931 sumy+=xxx(index*4+1);
2932 sumxy+=xxx(index*4+1)*x;
2933 sumx2y+=xxx(index*4+1)*x2;
2934 sumz+=xxx(index*4+2);
2935 sumxz+=xxx(index*4+2)*x;
2936 sumx2z+=xxx(index*4+2)*x2;
2937 sumq+=xxx(index*4+3);
2939 Float_t centralPad = (fTPCParam->GetNPads(sector,lastrow)-1)/2;
2940 Float_t det=currentIndex*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumx*sumx4-sumx2*sumx3)+
2941 sumx2*(sumx*sumx3-sumx2*sumx2);
2943 Float_t detay=sumy*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxy*sumx4-sumx2y*sumx3)+
2944 sumx2*(sumxy*sumx3-sumx2y*sumx2);
2945 Float_t detaz=sumz*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxz*sumx4-sumx2z*sumx3)+
2946 sumx2*(sumxz*sumx3-sumx2z*sumx2);
2948 Float_t detby=currentIndex*(sumxy*sumx4-sumx2y*sumx3)-sumy*(sumx*sumx4-sumx2*sumx3)+
2949 sumx2*(sumx*sumx2y-sumx2*sumxy);
2950 Float_t detbz=currentIndex*(sumxz*sumx4-sumx2z*sumx3)-sumz*(sumx*sumx4-sumx2*sumx3)+
2951 sumx2*(sumx*sumx2z-sumx2*sumxz);
2953 Float_t y=detay/det+centralPad;
2954 Float_t z=detaz/det;
2955 Float_t by=detby/det; //y angle
2956 Float_t bz=detbz/det; //z angle
2957 sumy/=Float_t(currentIndex);
2958 sumz/=Float_t(currentIndex);
2960 AliComplexCluster cl;
2966 cl.fTracks[0]=ipart;
2968 AliTPCClustersRow * row = (fClustersArray->GetRow(sector,lastrow));
2969 if (row!=0) row->InsertCluster(&cl);
2972 } //end of calculating cluster for given row
2974 } // end of loop over hits
2978 //_______________________________________________________________________________
2979 void AliTPC::Digits2Reco(Int_t firstevent,Int_t lastevent)
2981 // produces rec points from digits and writes them on the root file
2982 // AliTPCclusters.root
2984 TDirectory *cwd = gDirectory;
2987 AliTPCParamSR *dig=(AliTPCParamSR *)gDirectory->Get("75x40_100x60");
2989 printf("You are running 2 pad-length geom hits with 3 pad-length geom digits\n");
2991 dig = new AliTPCParamSR();
2995 dig=(AliTPCParamSR *)gDirectory->Get("75x40_100x60_150x60");
2998 printf("No TPC parameters found\n");
3003 cout<<"AliTPC::Digits2Reco: TPC parameteres have been set"<<endl;
3005 if(!gSystem->Getenv("CONFIG_FILE")){
3006 out=TFile::Open("AliTPCclusters.root","recreate");
3012 tmp1=gSystem->Getenv("CONFIG_FILE_PREFIX");
3013 tmp2=gSystem->Getenv("CONFIG_OUTDIR");
3014 sprintf(tmp3,"%s%s/AliTPCclusters.root",tmp1,tmp2);
3015 out=TFile::Open(tmp3,"recreate");
3019 cout<<"AliTPC::Digits2Reco - determination of rec points begins"<<endl;
3022 for(Int_t iev=firstevent;iev<lastevent+1;iev++){
3024 printf("Processing event %d\n",iev);
3025 Digits2Clusters(iev);
3027 cout<<"AliTPC::Digits2Reco - determination of rec points ended"<<endl;
3036 AliLoader* AliTPC::MakeLoader(const char* topfoldername)
3039 fLoader = new AliTPCLoader(GetName(),topfoldername);
3043 ////////////////////////////////////////////////////////////////////////
3044 AliTPCParam* AliTPC::LoadTPCParam(TFile *file) {
3046 // load TPC paarmeters from a given file or create new if the object
3047 // is not found there
3048 // 12/05/2003 This method should be moved to the AliTPCLoader
3049 // and one has to decide where to store the TPC parameters
3052 sprintf(paramName,"75x40_100x60_150x60");
3053 AliTPCParam *paramTPC=(AliTPCParam*)file->Get(paramName);
3055 cout<<"TPC parameters "<<paramName<<" found."<<endl;
3057 cerr<<"TPC parameters not found. Create new (they may be incorrect)."
3059 paramTPC = new AliTPCParamSR;
3063 // the older version of parameters can be accessed with this code.
3064 // In some cases, we have old parameters saved in the file but
3065 // digits were created with new parameters, it can be distinguish
3066 // by the name of TPC TreeD. The code here is just for the case
3067 // we would need to compare with old data, uncomment it if needed.
3069 // char paramName[50];
3070 // sprintf(paramName,"75x40_100x60");
3071 // AliTPCParam *paramTPC=(AliTPCParam*)in->Get(paramName);
3073 // cout<<"TPC parameters "<<paramName<<" found."<<endl;
3075 // sprintf(paramName,"75x40_100x60_150x60");
3076 // paramTPC=(AliTPCParam*)in->Get(paramName);
3078 // cout<<"TPC parameters "<<paramName<<" found."<<endl;
3080 // cerr<<"TPC parameters not found. Create new (they may be incorrect)."
3082 // paramTPC = new AliTPCParamSR;