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 "AliTPCclusterer.h"
77 #include "AliTPCtracker.h"
78 #include "AliTrackReference.h"
83 //_____________________________________________________________________________
84 // helper class for fast matrix and vector manipulation - no range checking
85 // origin - Marian Ivanov
87 class AliTPCFastMatrix : public TMatrix {
89 AliTPCFastMatrix(Int_t row_lwb, Int_t row_upb, Int_t col_lwb, Int_t col_upb);
90 inline Float_t & UncheckedAt(Int_t rown, Int_t coln) const {return (fIndex[coln])[rown];} //fast acces
91 inline Float_t UncheckedAtFast(Int_t rown, Int_t coln) const {return (fIndex[coln])[rown];} //fast acces
94 AliTPCFastMatrix::AliTPCFastMatrix(Int_t row_lwb, Int_t row_upb, Int_t col_lwb, Int_t col_upb):
95 TMatrix(row_lwb, row_upb,col_lwb,col_upb)
98 //_____________________________________________________________________________
99 class AliTPCFastVector : public TVector {
101 AliTPCFastVector(Int_t size);
102 virtual ~AliTPCFastVector(){;}
103 inline Float_t & UncheckedAt(Int_t index) const {return fElements[index];} //fast acces
107 AliTPCFastVector::AliTPCFastVector(Int_t size):TVector(size){
110 //_____________________________________________________________________________
114 // Default constructor
125 fHitType = 2; //default CONTAINERS - based on ROOT structure
132 //_____________________________________________________________________________
133 AliTPC::AliTPC(const char *name, const char *title)
134 : AliDetector(name,title)
137 // Standard constructor
141 // Initialise arrays of hits and digits
142 fHits = new TClonesArray("AliTPChit", 176);
143 gAlice->AddHitList(fHits);
148 fTrackHits = new AliTPCTrackHitsV2;
149 fTrackHits->SetHitPrecision(0.002);
150 fTrackHits->SetStepPrecision(0.003);
151 fTrackHits->SetMaxDistance(100);
153 fTrackHitsOld = new AliTPCTrackHits; //MI - 13.09.2000
154 fTrackHitsOld->SetHitPrecision(0.002);
155 fTrackHitsOld->SetStepPrecision(0.003);
156 fTrackHitsOld->SetMaxDistance(100);
163 // Initialise counters
169 // Initialise color attributes
170 SetMarkerColor(kYellow);
173 // Set TPC parameters
177 if (!strcmp(title,"Default")) {
178 fTPCParam = new AliTPCParamSR;
180 cerr<<"AliTPC warning: in Config.C you must set non-default parameters\n";
186 //_____________________________________________________________________________
197 delete fTrackHits; //MI 15.09.2000
198 delete fTrackHitsOld; //MI 10.12.2001
199 if (fNoiseTable) delete [] fNoiseTable;
203 //_____________________________________________________________________________
204 void AliTPC::AddHit(Int_t track, Int_t *vol, Float_t *hits)
207 // Add a hit to the list
209 // TClonesArray &lhits = *fHits;
210 // new(lhits[fNhits++]) AliTPChit(fIshunt,track,vol,hits);
212 TClonesArray &lhits = *fHits;
213 new(lhits[fNhits++]) AliTPChit(fIshunt,track,vol,hits);
216 AddHit2(track,vol,hits);
219 //_____________________________________________________________________________
220 void AliTPC::BuildGeometry()
224 // Build TPC ROOT TNode geometry for the event display
229 const int kColorTPC=19;
230 char name[5], title[25];
231 const Double_t kDegrad=TMath::Pi()/180;
232 const Double_t kRaddeg=180./TMath::Pi();
235 Float_t innerOpenAngle = fTPCParam->GetInnerAngle();
236 Float_t outerOpenAngle = fTPCParam->GetOuterAngle();
238 Float_t innerAngleShift = fTPCParam->GetInnerAngleShift();
239 Float_t outerAngleShift = fTPCParam->GetOuterAngleShift();
241 Int_t nLo = fTPCParam->GetNInnerSector()/2;
242 Int_t nHi = fTPCParam->GetNOuterSector()/2;
244 const Double_t kloAng = (Double_t)TMath::Nint(innerOpenAngle*kRaddeg);
245 const Double_t khiAng = (Double_t)TMath::Nint(outerOpenAngle*kRaddeg);
246 const Double_t kloAngSh = (Double_t)TMath::Nint(innerAngleShift*kRaddeg);
247 const Double_t khiAngSh = (Double_t)TMath::Nint(outerAngleShift*kRaddeg);
250 const Double_t kloCorr = 1/TMath::Cos(0.5*kloAng*kDegrad);
251 const Double_t khiCorr = 1/TMath::Cos(0.5*khiAng*kDegrad);
257 // Get ALICE top node
260 nTop=gAlice->GetGeometry()->GetNode("alice");
264 rl = fTPCParam->GetInnerRadiusLow();
265 ru = fTPCParam->GetInnerRadiusUp();
269 sprintf(name,"LS%2.2d",i);
271 sprintf(title,"TPC low sector %3d",i);
274 tubs = new TTUBS(name,title,"void",rl*kloCorr,ru*kloCorr,250.,
275 kloAng*(i-0.5)+kloAngSh,kloAng*(i+0.5)+kloAngSh);
276 tubs->SetNumberOfDivisions(1);
278 nNode = new TNode(name,title,name,0,0,0,"");
279 nNode->SetLineColor(kColorTPC);
285 rl = fTPCParam->GetOuterRadiusLow();
286 ru = fTPCParam->GetOuterRadiusUp();
289 sprintf(name,"US%2.2d",i);
291 sprintf(title,"TPC upper sector %d",i);
293 tubs = new TTUBS(name,title,"void",rl*khiCorr,ru*khiCorr,250,
294 khiAng*(i-0.5)+khiAngSh,khiAng*(i+0.5)+khiAngSh);
295 tubs->SetNumberOfDivisions(1);
297 nNode = new TNode(name,title,name,0,0,0,"");
298 nNode->SetLineColor(kColorTPC);
304 //_____________________________________________________________________________
305 Int_t AliTPC::DistancetoPrimitive(Int_t , Int_t )
308 // Calculate distance from TPC to mouse on the display
314 void AliTPC::Clusters2Tracks()
316 //-----------------------------------------------------------------
317 // This is a track finder.
318 //-----------------------------------------------------------------
319 AliTPCtracker tracker(fTPCParam,0,fLoader->GetEventFolder()->GetName());
320 tracker.Clusters2Tracks();
323 //_____________________________________________________________________________
324 void AliTPC::CreateMaterials()
326 //-----------------------------------------------
327 // Create Materials for for TPC simulations
328 //-----------------------------------------------
330 //-----------------------------------------------------------------
331 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
332 //-----------------------------------------------------------------
334 Int_t iSXFLD=gAlice->Field()->Integ();
335 Float_t sXMGMX=gAlice->Field()->Max();
337 Float_t amat[5]; // atomic numbers
338 Float_t zmat[5]; // z
339 Float_t wmat[5]; // proportions
345 //***************** Gases *************************
347 //-------------------------------------------------
349 //-------------------------------------------------
360 AliMaterial(20,"Ne",amat[0],zmat[0],density,999.,999.);
370 AliMaterial(21,"Ar",amat[0],zmat[0],density,999.,999.);
373 //--------------------------------------------------------------
375 //--------------------------------------------------------------
392 amol[0] = amat[0]*wmat[0]+amat[1]*wmat[1];
394 AliMixture(10,"CO2",amat,zmat,density,-2,wmat);
409 amol[1] = amat[0]*wmat[0]+amat[1]*wmat[1];
411 AliMixture(11,"CF4",amat,zmat,density,-2,wmat);
427 amol[2] = amat[0]*wmat[0]+amat[1]*wmat[1];
429 AliMixture(12,"CH4",amat,zmat,density,-2,wmat);
431 //----------------------------------------------------------------
432 // gases - mixtures, ID >= 20 pure gases, <= 10 ID < 20 -compounds
433 //----------------------------------------------------------------
439 Float_t rho,absl,X0,buf[1];
443 for(nc = 0;nc<fNoComp;nc++)
446 // retrive material constants
448 gMC->Gfmate((*fIdmate)[fMixtComp[nc]],namate,a,z,rho,X0,absl,buf,nbuf);
453 Int_t nnc = (fMixtComp[nc]>=20) ? fMixtComp[nc]%20 : fMixtComp[nc]%10;
455 am += fMixtProp[nc]*((fMixtComp[nc]>=20) ? apure[nnc] : amol[nnc]);
456 density += fMixtProp[nc]*rho; // density of the mixture
460 // mixture proportions by weight!
462 for(nc = 0;nc<fNoComp;nc++)
465 Int_t nnc = (fMixtComp[nc]>=20) ? fMixtComp[nc]%20 : fMixtComp[nc]%10;
467 wmat[nc] = fMixtProp[nc]*((fMixtComp[nc]>=20) ?
468 apure[nnc] : amol[nnc])/am;
472 // Drift gases 1 - nonsensitive, 2 - sensitive
474 AliMixture(31,"Drift gas 1",amat,zmat,density,fNoComp,wmat);
475 AliMixture(32,"Drift gas 2",amat,zmat,density,fNoComp,wmat);
484 AliMaterial(24,"Air",amat[0],zmat[0],density,999.,999.);
487 //----------------------------------------------------------------------
489 //----------------------------------------------------------------------
511 AliMixture(34,"Kevlar",amat,zmat,density,-4,wmat);
533 AliMixture(35,"NOMEX",amat,zmat,density,-4,wmat);
551 AliMixture(36,"Makrolon",amat,zmat,density,-3,wmat);
569 AliMixture(37, "Mylar",amat,zmat,density,-3,wmat);
571 // SiO2 - used later for the glass fiber
583 AliMixture(38,"SiO2",amat,zmat,2.2,-2,wmat); //SiO2 - quartz (rho=2.2)
592 AliMaterial(40,"Al",amat[0],zmat[0],density,999.,999.);
601 AliMaterial(41,"Si",amat[0],zmat[0],density,999.,999.);
610 AliMaterial(42,"Cu",amat[0],zmat[0],density,999.,999.);
628 AliMixture(43, "Tedlar",amat,zmat,density,-3,wmat);
647 AliMixture(44,"Plexiglas",amat,zmat,density,-3,wmat);
649 // Epoxy - C14 H20 O3
666 AliMixture(45,"Epoxy",amat,zmat,density,-3,wmat);
674 AliMaterial(46,"C",amat[0],zmat[0],density,999.,999.);
678 gMC->Gfmate((*fIdmate)[45],namate,amat[1],zmat[1],rho,X0,absl,buf,nbuf);
682 wmat[0]=0.644; // by weight!
685 density=0.5*(1.25+2.265);
687 AliMixture(47,"Cfiber",amat,zmat,density,2,wmat);
691 gMC->Gfmate((*fIdmate)[38],namate,amat[0],zmat[0],rho,X0,absl,buf,nbuf);
693 wmat[0]=0.725; // by weight!
698 AliMixture(39,"G10",amat,zmat,density,2,wmat);
703 //----------------------------------------------------------
704 // tracking media for gases
705 //----------------------------------------------------------
707 AliMedium(0, "Air", 24, 0, iSXFLD, sXMGMX, 10., 999., .1, .01, .1);
708 AliMedium(1, "Drift gas 1", 31, 0, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
709 AliMedium(2, "Drift gas 2", 32, 1, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
710 AliMedium(3,"CO2",10,0, iSXFLD, sXMGMX, 10., 999.,.1, .001, .001);
712 //-----------------------------------------------------------
713 // tracking media for solids
714 //-----------------------------------------------------------
716 AliMedium(4,"Al",40,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
717 AliMedium(5,"Kevlar",34,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
718 AliMedium(6,"Nomex",35,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
719 AliMedium(7,"Makrolon",36,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
720 AliMedium(8,"Mylar",37,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
721 AliMedium(9,"Tedlar",43,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
722 AliMedium(10,"Cu",42,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
723 AliMedium(11,"Si",41,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
724 AliMedium(12,"G10",39,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
725 AliMedium(13,"Plexiglas",44,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
726 AliMedium(14,"Epoxy",45,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
727 AliMedium(15,"Cfiber",47,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
731 void AliTPC::GenerNoise(Int_t tablesize)
734 //Generate table with noise
741 if (fNoiseTable) delete[] fNoiseTable;
742 fNoiseTable = new Float_t[tablesize];
743 fNoiseDepth = tablesize;
744 fCurrentNoise =0; //!index of the noise in the noise table
746 Float_t norm = fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac();
747 for (Int_t i=0;i<tablesize;i++) fNoiseTable[i]= gRandom->Gaus(0,norm);
750 Float_t AliTPC::GetNoise()
752 // get noise from table
753 // if ((fCurrentNoise%10)==0)
754 // fCurrentNoise= gRandom->Rndm()*fNoiseDepth;
755 if (fCurrentNoise>=fNoiseDepth) fCurrentNoise=0;
756 return fNoiseTable[fCurrentNoise++];
757 //gRandom->Gaus(0, fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac());
761 Bool_t AliTPC::IsSectorActive(Int_t sec)
764 // check if the sector is active
765 if (!fActiveSectors) return kTRUE;
766 else return fActiveSectors[sec];
769 void AliTPC::SetActiveSectors(Int_t * sectors, Int_t n)
771 // activate interesting sectors
772 SetTreeAddress();//just for security
773 if (fActiveSectors) delete [] fActiveSectors;
774 fActiveSectors = new Bool_t[fTPCParam->GetNSector()];
775 for (Int_t i=0;i<fTPCParam->GetNSector();i++) fActiveSectors[i]=kFALSE;
776 for (Int_t i=0;i<n;i++)
777 if ((sectors[i]>=0) && sectors[i]<fTPCParam->GetNSector()) fActiveSectors[sectors[i]]=kTRUE;
781 void AliTPC::SetActiveSectors(Int_t flag)
784 // activate sectors which were hitted by tracks
786 SetTreeAddress();//just for security
787 if (fHitType==0) return; // if Clones hit - not short volume ID information
788 if (fActiveSectors) delete [] fActiveSectors;
789 fActiveSectors = new Bool_t[fTPCParam->GetNSector()];
791 for (Int_t i=0;i<fTPCParam->GetNSector();i++) fActiveSectors[i]=kTRUE;
794 for (Int_t i=0;i<fTPCParam->GetNSector();i++) fActiveSectors[i]=kFALSE;
798 Fatal("SetActiveSectors","Can not find TreeH in folder");
801 if (fHitType>1) branch = TreeH()->GetBranch("TPC2");
802 else branch = TreeH()->GetBranch("TPC");
803 Stat_t ntracks = TreeH()->GetEntries();
804 // loop over all hits
805 cout<<"\nAliTPC::SetActiveSectors(): Got "<<ntracks<<" tracks\n";
807 for(Int_t track=0;track<ntracks;track++)
811 if (fTrackHits && fHitType&4) {
812 TBranch * br1 = TreeH()->GetBranch("fVolumes");
813 TBranch * br2 = TreeH()->GetBranch("fNVolumes");
814 br1->GetEvent(track);
815 br2->GetEvent(track);
816 Int_t *volumes = fTrackHits->GetVolumes();
817 for (Int_t j=0;j<fTrackHits->GetNVolumes(); j++)
818 fActiveSectors[volumes[j]]=kTRUE;
822 if (fTrackHitsOld && fHitType&2) {
823 TBranch * br = TreeH()->GetBranch("fTrackHitsInfo");
825 AliObjectArray * ar = fTrackHitsOld->fTrackHitsInfo;
826 for (UInt_t j=0;j<ar->GetSize();j++){
827 fActiveSectors[((AliTrackHitsInfo*)ar->At(j))->fVolumeID] =kTRUE;
837 void AliTPC::Digits2Clusters(Int_t eventnumber)
839 //-----------------------------------------------------------------
840 // This is a simple cluster finder.
841 //-----------------------------------------------------------------
842 AliTPCclusterer::Digits2Clusters(fTPCParam, fLoader,eventnumber);
845 extern Double_t SigmaY2(Double_t, Double_t, Double_t);
846 extern Double_t SigmaZ2(Double_t, Double_t);
847 //_____________________________________________________________________________
848 void AliTPC::Hits2Clusters(TFile *of, Int_t eventn)
850 //--------------------------------------------------------
851 // TPC simple cluster generator from hits
852 // obtained from the TPC Fast Simulator
853 // The point errors are taken from the parametrization
854 //--------------------------------------------------------
856 //-----------------------------------------------------------------
857 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
858 //-----------------------------------------------------------------
859 // Adopted to Marian's cluster data structure by I.Belikov, CERN,
860 // Jouri.Belikov@cern.ch
861 //----------------------------------------------------------------
863 /////////////////////////////////////////////////////////////////////////////
865 //---------------------------------------------------------------------
866 // ALICE TPC Cluster Parameters
867 //--------------------------------------------------------------------
871 // Cluster width in rphi
872 const Float_t kACrphi=0.18322;
873 const Float_t kBCrphi=0.59551e-3;
874 const Float_t kCCrphi=0.60952e-1;
875 // Cluster width in z
876 const Float_t kACz=0.19081;
877 const Float_t kBCz=0.55938e-3;
878 const Float_t kCCz=0.30428;
882 cerr<<"AliTPC::Hits2Clusters(): output file not open !\n";
886 //if(fDefaults == 0) SetDefaults();
888 Float_t sigmaRphi,sigmaZ,clRphi,clZ;
890 TParticle *particle; // pointer to a given particle
891 AliTPChit *tpcHit; // pointer to a sigle TPC hit
895 Float_t pl,pt,tanth,rpad,ratio;
898 //---------------------------------------------------------------
899 // Get the access to the tracks
900 //---------------------------------------------------------------
905 Fatal("Hits2Clusters","Can not find TreeH in folder");
910 Stat_t ntracks = tH->GetEntries();
912 //Switch to the output file
914 if (fLoader->TreeR() == 0x0) fLoader->MakeTree("R");
916 cout<<"fTPCParam->GetTitle() = "<<fTPCParam->GetTitle()<<endl;
918 AliRunLoader* rl = (AliRunLoader*)fLoader->GetEventFolder()->FindObject(AliRunLoader::fgkRunLoaderName);
920 fTPCParam->Write(fTPCParam->GetTitle());
922 AliTPCClustersArray carray;
923 carray.Setup(fTPCParam);
924 carray.SetClusterType("AliTPCcluster");
925 carray.MakeTree(fLoader->TreeR());
927 Int_t nclusters=0; //cluster counter
929 //------------------------------------------------------------
930 // Loop over all sectors (72 sectors for 20 deg
931 // segmentation for both lower and upper sectors)
932 // Sectors 0-35 are lower sectors, 0-17 z>0, 17-35 z<0
933 // Sectors 36-71 are upper sectors, 36-53 z>0, 54-71 z<0
935 // First cluster for sector 0 starts at "0"
936 //------------------------------------------------------------
938 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++){
940 fTPCParam->AdjustCosSin(isec,cph,sph);
942 //------------------------------------------------------------
944 //------------------------------------------------------------
946 for(Int_t track=0;track<ntracks;track++){
950 // Get number of the TPC hits
952 tpcHit = (AliTPChit*)FirstHit(-1);
958 if (tpcHit->fQ == 0.) {
959 tpcHit = (AliTPChit*) NextHit();
960 continue; //information about track (I.Belikov)
962 sector=tpcHit->fSector; // sector number
965 tpcHit = (AliTPChit*) NextHit();
968 ipart=tpcHit->Track();
969 particle=gAlice->Particle(ipart);
972 if(pt < 1.e-9) pt=1.e-9;
974 tanth = TMath::Abs(tanth);
975 rpad=TMath::Sqrt(tpcHit->X()*tpcHit->X() + tpcHit->Y()*tpcHit->Y());
976 ratio=0.001*rpad/pt; // pt must be in MeV/c - historical reason
978 // space-point resolutions
980 sigmaRphi=SigmaY2(rpad,tanth,pt);
981 sigmaZ =SigmaZ2(rpad,tanth );
985 clRphi=kACrphi-kBCrphi*rpad*tanth+kCCrphi*ratio*ratio;
986 clZ=kACz-kBCz*rpad*tanth+kCCz*tanth*tanth;
988 // temporary protection
990 if(sigmaRphi < 0.) sigmaRphi=0.4e-3;
991 if(sigmaZ < 0.) sigmaZ=0.4e-3;
992 if(clRphi < 0.) clRphi=2.5e-3;
993 if(clZ < 0.) clZ=2.5e-5;
998 // smearing --> rotate to the 1 (13) or to the 25 (49) sector,
999 // then the inaccuracy in a X-Y plane is only along Y (pad row)!
1001 Float_t xprim= tpcHit->X()*cph + tpcHit->Y()*sph;
1002 Float_t yprim=-tpcHit->X()*sph + tpcHit->Y()*cph;
1003 xyz[0]=gRandom->Gaus(yprim,TMath::Sqrt(sigmaRphi)); // y
1004 Float_t alpha=(isec < fTPCParam->GetNInnerSector()) ?
1005 fTPCParam->GetInnerAngle() : fTPCParam->GetOuterAngle();
1006 Float_t ymax=xprim*TMath::Tan(0.5*alpha);
1007 if (TMath::Abs(xyz[0])>ymax) xyz[0]=yprim;
1008 xyz[1]=gRandom->Gaus(tpcHit->Z(),TMath::Sqrt(sigmaZ)); // z
1009 if (TMath::Abs(xyz[1])>fTPCParam->GetZLength()) xyz[1]=tpcHit->Z();
1010 xyz[2]=sigmaRphi; // fSigmaY2
1011 xyz[3]=sigmaZ; // fSigmaZ2
1012 xyz[4]=tpcHit->fQ; // q
1014 AliTPCClustersRow *clrow=carray.GetRow(sector,tpcHit->fPadRow);
1015 if (!clrow) clrow=carray.CreateRow(sector,tpcHit->fPadRow);
1017 Int_t tracks[3]={tpcHit->Track(), -1, -1};
1018 AliTPCcluster cluster(tracks,xyz);
1020 clrow->InsertCluster(&cluster); nclusters++;
1022 tpcHit = (AliTPChit*)NextHit();
1025 } // end of loop over hits
1027 } // end of loop over tracks
1029 Int_t nrows=fTPCParam->GetNRow(isec);
1030 for (Int_t irow=0; irow<nrows; irow++) {
1031 AliTPCClustersRow *clrow=carray.GetRow(isec,irow);
1032 if (!clrow) continue;
1033 carray.StoreRow(isec,irow);
1034 carray.ClearRow(isec,irow);
1037 } // end of loop over sectors
1039 cerr<<"Number of made clusters : "<<nclusters<<" \n";
1040 fLoader->WriteRecPoints("OVERWRITE");
1043 } // end of function
1045 //_________________________________________________________________
1046 void AliTPC::Hits2ExactClustersSector(Int_t isec)
1048 //--------------------------------------------------------
1049 //calculate exact cross point of track and given pad row
1050 //resulting values are expressed in "digit" coordinata
1051 //--------------------------------------------------------
1053 //-----------------------------------------------------------------
1054 // Origin: Marian Ivanov GSI Darmstadt, m.ivanov@gsi.de
1055 //-----------------------------------------------------------------
1057 if (fClustersArray==0){
1061 TParticle *particle; // pointer to a given particle
1062 AliTPChit *tpcHit; // pointer to a sigle TPC hit
1063 // Int_t sector,nhits;
1065 const Int_t kcmaxhits=30000;
1066 AliTPCFastVector * xxxx = new AliTPCFastVector(kcmaxhits*4);
1067 AliTPCFastVector & xxx = *xxxx;
1068 Int_t maxhits = kcmaxhits;
1069 //construct array for each padrow
1070 for (Int_t i=0; i<fTPCParam->GetNRow(isec);i++)
1071 fClustersArray->CreateRow(isec,i);
1073 //---------------------------------------------------------------
1074 // Get the access to the tracks
1075 //---------------------------------------------------------------
1077 TTree *tH = TreeH();
1080 Fatal("Hits2Clusters","Can not find TreeH in folder");
1085 Stat_t ntracks = tH->GetEntries();
1086 Int_t npart = gAlice->GetNtrack();
1089 if (fHitType>1) branch = tH->GetBranch("TPC2");
1090 else branch = tH->GetBranch("TPC");
1092 //------------------------------------------------------------
1094 //------------------------------------------------------------
1096 for(Int_t track=0;track<ntracks;track++){
1097 Bool_t isInSector=kTRUE;
1099 isInSector = TrackInVolume(isec,track);
1100 if (!isInSector) continue;
1102 branch->GetEntry(track); // get next track
1104 // Get number of the TPC hits and a pointer
1108 Int_t currentIndex=0;
1109 Int_t lastrow=-1; //last writen row
1113 tpcHit = (AliTPChit*)FirstHit(-1);
1116 Int_t sector=tpcHit->fSector; // sector number
1118 tpcHit = (AliTPChit*) NextHit();
1122 ipart=tpcHit->Track();
1123 if (ipart<npart) particle=gAlice->Particle(ipart);
1127 Float_t x[3]={tpcHit->X(),tpcHit->Y(),tpcHit->Z()};
1128 Int_t index[3]={1,isec,0};
1129 Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
1130 if (currentrow<0) {tpcHit = (AliTPChit*)NextHit(); continue;}
1131 if (lastrow<0) lastrow=currentrow;
1132 if (currentrow==lastrow){
1133 if ( currentIndex>=maxhits){
1135 xxx.ResizeTo(4*maxhits);
1137 xxx(currentIndex*4)=x[0];
1138 xxx(currentIndex*4+1)=x[1];
1139 xxx(currentIndex*4+2)=x[2];
1140 xxx(currentIndex*4+3)=tpcHit->fQ;
1144 if (currentIndex>2){
1156 for (Int_t index=0;index<currentIndex;index++){
1158 x=x2=x3=x4=xxx(index*4);
1166 sumy+=xxx(index*4+1);
1167 sumxy+=xxx(index*4+1)*x;
1168 sumx2y+=xxx(index*4+1)*x2;
1169 sumz+=xxx(index*4+2);
1170 sumxz+=xxx(index*4+2)*x;
1171 sumx2z+=xxx(index*4+2)*x2;
1172 sumq+=xxx(index*4+3);
1174 Float_t centralPad = (fTPCParam->GetNPads(isec,lastrow)-1)/2;
1175 Float_t det=currentIndex*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumx*sumx4-sumx2*sumx3)+
1176 sumx2*(sumx*sumx3-sumx2*sumx2);
1178 Float_t detay=sumy*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxy*sumx4-sumx2y*sumx3)+
1179 sumx2*(sumxy*sumx3-sumx2y*sumx2);
1180 Float_t detaz=sumz*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxz*sumx4-sumx2z*sumx3)+
1181 sumx2*(sumxz*sumx3-sumx2z*sumx2);
1183 Float_t detby=currentIndex*(sumxy*sumx4-sumx2y*sumx3)-sumy*(sumx*sumx4-sumx2*sumx3)+
1184 sumx2*(sumx*sumx2y-sumx2*sumxy);
1185 Float_t detbz=currentIndex*(sumxz*sumx4-sumx2z*sumx3)-sumz*(sumx*sumx4-sumx2*sumx3)+
1186 sumx2*(sumx*sumx2z-sumx2*sumxz);
1188 if (TMath::Abs(det)<0.00001){
1189 tpcHit = (AliTPChit*)NextHit();
1193 Float_t y=detay/det+centralPad;
1194 Float_t z=detaz/det;
1195 Float_t by=detby/det; //y angle
1196 Float_t bz=detbz/det; //z angle
1197 sumy/=Float_t(currentIndex);
1198 sumz/=Float_t(currentIndex);
1200 AliTPCClustersRow * row = (fClustersArray->GetRow(isec,lastrow));
1202 AliComplexCluster* cl = new((AliComplexCluster*)row->Append()) AliComplexCluster ;
1203 // AliComplexCluster cl;
1209 cl->fTracks[0]=ipart;
1213 } //end of calculating cluster for given row
1216 tpcHit = (AliTPChit*)NextHit();
1217 } // end of loop over hits
1218 } // end of loop over tracks
1219 //write padrows to tree
1220 for (Int_t ii=0; ii<fTPCParam->GetNRow(isec);ii++) {
1221 fClustersArray->StoreRow(isec,ii);
1222 fClustersArray->ClearRow(isec,ii);
1231 void AliTPC::SDigits2Digits2(Int_t eventnumber)
1233 //create digits from summable digits
1234 GenerNoise(500000); //create teble with noise
1236 //conect tree with sSDigits
1237 TTree *t = fLoader->TreeS();
1241 fLoader->LoadSDigits("READ");
1242 t = fLoader->TreeS();
1245 Error("SDigits2Digits2","Can not get input TreeS");
1250 if (fLoader->TreeD() == 0x0) fLoader->MakeTree("D");
1252 AliSimDigits digarr, *dummy=&digarr;
1253 TBranch* sdb = t->GetBranch("Segment");
1256 Error("SDigits2Digits2","Can not find branch with segments in TreeS.");
1260 sdb->SetAddress(&dummy);
1262 Stat_t nentries = t->GetEntries();
1264 // set zero suppression
1266 fTPCParam->SetZeroSup(2);
1268 // get zero suppression
1270 Int_t zerosup = fTPCParam->GetZeroSup();
1272 //make tree with digits
1274 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1275 arr->SetClass("AliSimDigits");
1276 arr->Setup(fTPCParam);
1277 arr->MakeTree(fLoader->TreeD());
1279 AliTPCParam * par = fTPCParam;
1281 //Loop over segments of the TPC
1283 for (Int_t n=0; n<nentries; n++) {
1286 if (!par->AdjustSectorRow(digarr.GetID(),sec,row)) {
1287 cerr<<"AliTPC warning: invalid segment ID ! "<<digarr.GetID()<<endl;
1290 if (!IsSectorActive(sec))
1292 // cout<<n<<" NOT Active \n";
1297 // cout<<n<<" Active \n";
1299 AliSimDigits * digrow =(AliSimDigits*) arr->CreateRow(sec,row);
1300 Int_t nrows = digrow->GetNRows();
1301 Int_t ncols = digrow->GetNCols();
1303 digrow->ExpandBuffer();
1304 digarr.ExpandBuffer();
1305 digrow->ExpandTrackBuffer();
1306 digarr.ExpandTrackBuffer();
1309 Short_t * pamp0 = digarr.GetDigits();
1310 Int_t * ptracks0 = digarr.GetTracks();
1311 Short_t * pamp1 = digrow->GetDigits();
1312 Int_t * ptracks1 = digrow->GetTracks();
1313 Int_t nelems =nrows*ncols;
1314 Int_t saturation = fTPCParam->GetADCSat();
1315 //use internal structure of the AliDigits - for speed reason
1316 //if you cahnge implementation
1317 //of the Alidigits - it must be rewriten -
1318 for (Int_t i= 0; i<nelems; i++){
1319 // Float_t q = *pamp0;
1320 //q/=16.; //conversion faktor
1321 //Float_t noise= GetNoise();
1323 //q= TMath::Nint(q);
1324 Float_t q = TMath::Nint(Float_t(*pamp0)/16.+GetNoise());
1326 if (q>saturation) q=saturation;
1328 //if (ptracks0[0]==0)
1331 ptracks1[0]=ptracks0[0];
1332 ptracks1[nelems]=ptracks0[nelems];
1333 ptracks1[2*nelems]=ptracks0[2*nelems];
1341 arr->StoreRow(sec,row);
1342 arr->ClearRow(sec,row);
1343 // cerr<<sec<<"\t"<<row<<"\n";
1348 fLoader->WriteDigits("OVERWRITE");
1352 //__________________________________________________________________
1353 void AliTPC::SetDefaults(){
1356 cerr<<"Setting default parameters...\n";
1358 // Set response functions
1361 AliRunLoader* rl = (AliRunLoader*)fLoader->GetEventFolder()->FindObject(AliRunLoader::fgkRunLoaderName);
1363 AliTPCParamSR *param=(AliTPCParamSR*)gDirectory->Get("75x40_100x60");
1365 printf("You are using 2 pad-length geom hits with 3 pad-lenght geom digits...\n");
1367 param = new AliTPCParamSR();
1370 param=(AliTPCParamSR*)gDirectory->Get("75x40_100x60_150x60");
1373 printf("No TPC parameters found\n");
1378 AliTPCPRF2D * prfinner = new AliTPCPRF2D;
1379 AliTPCPRF2D * prfouter1 = new AliTPCPRF2D;
1380 AliTPCPRF2D * prfouter2 = new AliTPCPRF2D;
1381 AliTPCRF1D * rf = new AliTPCRF1D(kTRUE);
1382 rf->SetGauss(param->GetZSigma(),param->GetZWidth(),1.);
1383 rf->SetOffset(3*param->GetZSigma());
1386 TDirectory *savedir=gDirectory;
1387 TFile *f=TFile::Open("$ALICE_ROOT/TPC/AliTPCprf2d.root");
1389 cerr<<"Can't open $ALICE_ROOT/TPC/AliTPCprf2d.root !\n" ;
1392 prfinner->Read("prf_07504_Gati_056068_d02");
1393 prfouter1->Read("prf_10006_Gati_047051_d03");
1394 prfouter2->Read("prf_15006_Gati_047051_d03");
1398 param->SetInnerPRF(prfinner);
1399 param->SetOuter1PRF(prfouter1);
1400 param->SetOuter2PRF(prfouter2);
1401 param->SetTimeRF(rf);
1411 //__________________________________________________________________
1412 void AliTPC::Hits2Digits(Int_t eventnumber)
1414 //----------------------------------------------------
1415 // Loop over all sectors for a single event
1416 //----------------------------------------------------
1417 AliRunLoader* rl = (AliRunLoader*)fLoader->GetEventFolder()->FindObject(AliRunLoader::fgkRunLoaderName);
1418 rl->GetEvent(eventnumber);
1419 if (fLoader->TreeH() == 0x0)
1421 if(fLoader->LoadHits())
1423 Error("Hits2Digits","Can not load hits.");
1428 if (fLoader->TreeD() == 0x0 )
1430 fLoader->MakeTree("D");
1431 if (fLoader->TreeD() == 0x0 )
1433 Error("Hits2Digits","Can not get TreeD");
1438 if(fDefaults == 0) SetDefaults(); // check if the parameters are set
1439 GenerNoise(500000); //create teble with noise
1441 //setup TPCDigitsArray
1443 if(GetDigitsArray()) delete GetDigitsArray();
1445 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1446 arr->SetClass("AliSimDigits");
1447 arr->Setup(fTPCParam);
1449 arr->MakeTree(fLoader->TreeD());
1450 SetDigitsArray(arr);
1452 fDigitsSwitch=0; // standard digits
1454 cerr<<"Digitizing TPC -- normal digits...\n";
1456 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++)
1457 if (IsSectorActive(isec))
1459 cout<<"Sector "<<isec<<"is active\n";
1460 Hits2DigitsSector(isec);
1464 cout<<"Sector "<<isec<<"is NOT active\n";
1467 fLoader->WriteDigits("OVERWRITE");
1472 //__________________________________________________________________
1473 void AliTPC::Hits2SDigits2(Int_t eventnumber)
1476 //-----------------------------------------------------------
1477 // summable digits - 16 bit "ADC", no noise, no saturation
1478 //-----------------------------------------------------------
1480 //----------------------------------------------------
1481 // Loop over all sectors for a single event
1482 //----------------------------------------------------
1483 // AliRunLoader* rl = (AliRunLoader*)fLoader->GetEventFolder()->FindObject(AliRunLoader::fgkRunLoaderName);
1485 AliRunLoader* rl = fLoader->GetRunLoader();
1487 rl->GetEvent(eventnumber);
1488 if (fLoader->TreeH() == 0x0)
1490 if(fLoader->LoadHits())
1492 Error("Hits2Digits","Can not load hits.");
1499 if (fLoader->TreeS() == 0x0 )
1501 fLoader->MakeTree("S");
1504 if(fDefaults == 0) SetDefaults();
1506 GenerNoise(500000); //create table with noise
1507 //setup TPCDigitsArray
1509 if(GetDigitsArray()) delete GetDigitsArray();
1512 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1513 arr->SetClass("AliSimDigits");
1514 arr->Setup(fTPCParam);
1515 arr->MakeTree(fLoader->TreeS());
1517 SetDigitsArray(arr);
1519 cerr<<"Digitizing TPC -- summable digits...\n";
1521 fDigitsSwitch=1; // summable digits
1523 // set zero suppression to "0"
1525 fTPCParam->SetZeroSup(0);
1527 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++)
1528 if (IsSectorActive(isec))
1530 // cout<<"Sector "<<isec<<" is active\n";
1531 Hits2DigitsSector(isec);
1534 fLoader->WriteSDigits("OVERWRITE");
1536 //this line prevents the crash in the similar one
1537 //on the beginning of this method
1538 //destructor attempts to reset the tree, which is deleted by the loader
1539 //need to be redesign
1540 if(GetDigitsArray()) delete GetDigitsArray();
1541 SetDigitsArray(0x0);
1543 //__________________________________________________________________
1545 void AliTPC::Hits2SDigits()
1548 //-----------------------------------------------------------
1549 // summable digits - 16 bit "ADC", no noise, no saturation
1550 //-----------------------------------------------------------
1552 //----------------------------------------------------
1553 // Loop over all sectors for a single event
1554 //----------------------------------------------------
1555 //MI change - for pp run
1556 // Int_t eventnumber = gAlice->GetEvNumber();
1557 // AliRunLoader* rl = (AliRunLoader*)fLoader->GetEventFolder()->FindObject(AliRunLoader::fgkRunLoaderName);
1558 // rl->GetEvent(eventnumber);
1559 // 12/05/2003 This method is obsolete and not used. It should be redesingned
1562 if (fLoader->TreeH() == 0x0)
1564 if(fLoader->LoadHits())
1566 Error("Hits2Digits","Can not load hits.");
1571 if(fDefaults == 0) SetDefaults();
1572 GenerNoise(500000); //create table with noise
1574 //setup TPCDigitsArray
1576 if(GetDigitsArray()) delete GetDigitsArray();
1578 if (fLoader->TreeS() == 0x0 )
1580 fLoader->MakeTree("S");
1583 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1584 arr->SetClass("AliSimDigits");
1585 arr->Setup(fTPCParam);
1586 arr->MakeTree(fLoader->TreeS());
1587 SetDigitsArray(arr);
1589 cerr<<"Digitizing TPC -- summable digits...\n";
1591 // fDigitsSwitch=1; // summable digits -for the moment direct
1593 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++) if (IsSectorActive(isec)) Hits2DigitsSector(isec);
1597 cout<<"Why method TPC::Hits2SDigits writes digits and not sdigits? skowron\n";
1598 fLoader->WriteDigits("OVERWRITE");
1600 //_____________________________________________________________________________
1602 void AliTPC::Hits2DigitsSector(Int_t isec)
1604 //-------------------------------------------------------------------
1605 // TPC conversion from hits to digits.
1606 //-------------------------------------------------------------------
1608 //-----------------------------------------------------------------
1609 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1610 //-----------------------------------------------------------------
1612 //-------------------------------------------------------
1613 // Get the access to the track hits
1614 //-------------------------------------------------------
1616 // check if the parameters are set - important if one calls this method
1617 // directly, not from the Hits2Digits
1619 if(fDefaults == 0) SetDefaults();
1621 TTree *tH = TreeH(); // pointer to the hits tree
1624 Fatal("Hits2DigitsSector","Can not find TreeH in folder");
1628 Stat_t ntracks = tH->GetEntries();
1632 //-------------------------------------------
1633 // Only if there are any tracks...
1634 //-------------------------------------------
1638 //printf("*** Processing sector number %d ***\n",isec);
1640 Int_t nrows =fTPCParam->GetNRow(isec);
1642 row= new TObjArray* [nrows+2]; // 2 extra rows for cross talk
1644 MakeSector(isec,nrows,tH,ntracks,row);
1646 //--------------------------------------------------------
1647 // Digitize this sector, row by row
1648 // row[i] is the pointer to the TObjArray of AliTPCFastVectors,
1649 // each one containing electrons accepted on this
1650 // row, assigned into tracks
1651 //--------------------------------------------------------
1655 if (fDigitsArray->GetTree()==0)
1657 Fatal("Hits2DigitsSector","Tree not set in fDigitsArray");
1660 for (i=0;i<nrows;i++){
1662 AliDigits * dig = fDigitsArray->CreateRow(isec,i);
1664 DigitizeRow(i,isec,row);
1666 fDigitsArray->StoreRow(isec,i);
1668 Int_t ndig = dig->GetDigitSize();
1671 printf("*** Sector, row, compressed digits %d %d %d ***\n",isec,i,ndig);
1673 fDigitsArray->ClearRow(isec,i);
1676 } // end of the sector digitization
1678 for(i=0;i<nrows+2;i++){
1683 delete [] row; // delete the array of pointers to TObjArray-s
1687 } // end of Hits2DigitsSector
1690 //_____________________________________________________________________________
1691 void AliTPC::DigitizeRow(Int_t irow,Int_t isec,TObjArray **rows)
1693 //-----------------------------------------------------------
1694 // Single row digitization, coupling from the neighbouring
1695 // rows taken into account
1696 //-----------------------------------------------------------
1698 //-----------------------------------------------------------------
1699 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1700 // Modified: Marian Ivanov GSI Darmstadt, m.ivanov@gsi.de
1701 //-----------------------------------------------------------------
1704 Float_t zerosup = fTPCParam->GetZeroSup();
1705 // Int_t nrows =fTPCParam->GetNRow(isec);
1706 fCurrentIndex[1]= isec;
1709 Int_t nofPads = fTPCParam->GetNPads(isec,irow);
1710 Int_t nofTbins = fTPCParam->GetMaxTBin();
1711 Int_t indexRange[4];
1713 // Integrated signal for this row
1714 // and a single track signal
1717 AliTPCFastMatrix *m1 = new AliTPCFastMatrix(0,nofPads,0,nofTbins); // integrated
1718 AliTPCFastMatrix *m2 = new AliTPCFastMatrix(0,nofPads,0,nofTbins); // single
1720 AliTPCFastMatrix &total = *m1;
1722 // Array of pointers to the label-signal list
1724 Int_t nofDigits = nofPads*nofTbins; // number of digits for this row
1725 Float_t **pList = new Float_t* [nofDigits];
1729 for(lp=0;lp<nofDigits;lp++)pList[lp]=0; // set all pointers to NULL
1733 //Int_t row1 = TMath::Max(irow-fTPCParam->GetNCrossRows(),0);
1734 //Int_t row2 = TMath::Min(irow+fTPCParam->GetNCrossRows(),nrows-1);
1737 for (Int_t row= row1;row<=row2;row++){
1738 Int_t nTracks= rows[row]->GetEntries();
1739 for (i1=0;i1<nTracks;i1++){
1740 fCurrentIndex[2]= row;
1741 fCurrentIndex[3]=irow+1;
1743 m2->Zero(); // clear single track signal matrix
1744 Float_t trackLabel = GetSignal(rows[row],i1,m2,m1,indexRange);
1745 GetList(trackLabel,nofPads,m2,indexRange,pList);
1747 else GetSignal(rows[row],i1,0,m1,indexRange);
1753 AliDigits *dig = fDigitsArray->GetRow(isec,irow);
1755 Float_t fzerosup = zerosup+0.5;
1756 for(Int_t it=0;it<nofTbins;it++){
1757 Float_t *pq = &(total.UncheckedAt(0,it));
1758 for(Int_t ip=0;ip<nofPads;ip++){
1762 if(fDigitsSwitch == 0){
1764 if(q <=fzerosup) continue; // do not fill zeros
1766 if(q > fTPCParam->GetADCSat()) q = fTPCParam->GetADCSat(); // saturation
1771 if(q <= 0.) continue; // do not fill zeros
1772 if(q>2000.) q=2000.;
1778 // "real" signal or electronic noise (list = -1)?
1781 for(Int_t j1=0;j1<3;j1++){
1782 tracks[j1] = (pList[gi]) ?(Int_t)(*(pList[gi]+j1)) : -2;
1787 <A NAME="AliDigits"></A>
1788 using of AliDigits object
1791 dig->SetDigitFast((Short_t)q,it,ip);
1792 if (fDigitsArray->IsSimulated())
1794 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[0],it,ip,0);
1795 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[1],it,ip,1);
1796 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[2],it,ip,2);
1800 } // end of loop over time buckets
1801 } // end of lop over pads
1804 // This row has been digitized, delete nonused stuff
1807 for(lp=0;lp<nofDigits;lp++){
1808 if(pList[lp]) delete [] pList[lp];
1817 } // end of DigitizeRow
1819 //_____________________________________________________________________________
1821 Float_t AliTPC::GetSignal(TObjArray *p1, Int_t ntr,
1822 AliTPCFastMatrix *m1, AliTPCFastMatrix *m2,Int_t *indexRange)
1825 //---------------------------------------------------------------
1826 // Calculates 2-D signal (pad,time) for a single track,
1827 // returns a pointer to the signal matrix and the track label
1828 // No digitization is performed at this level!!!
1829 //---------------------------------------------------------------
1831 //-----------------------------------------------------------------
1832 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1833 // Modified: Marian Ivanov
1834 //-----------------------------------------------------------------
1836 AliTPCFastVector *tv;
1838 tv = (AliTPCFastVector*)p1->At(ntr); // pointer to a track
1839 AliTPCFastVector &v = *tv;
1841 Float_t label = v(0);
1842 Int_t centralPad = (fTPCParam->GetNPads(fCurrentIndex[1],fCurrentIndex[3]-1)-1)/2;
1844 Int_t nElectrons = (tv->GetNrows()-1)/4;
1845 indexRange[0]=9999; // min pad
1846 indexRange[1]=-1; // max pad
1847 indexRange[2]=9999; //min time
1848 indexRange[3]=-1; // max time
1850 AliTPCFastMatrix &signal = *m1;
1851 AliTPCFastMatrix &total = *m2;
1853 // Loop over all electrons
1855 for(Int_t nel=0; nel<nElectrons; nel++){
1857 Float_t aval = v(idx+4);
1858 Float_t eltoadcfac=aval*fTPCParam->GetTotalNormFac();
1859 Float_t xyz[3]={v(idx+1),v(idx+2),v(idx+3)};
1860 Int_t n = ((AliTPCParamSR*)fTPCParam)->CalcResponseFast(xyz,fCurrentIndex,fCurrentIndex[3]);
1862 Int_t *index = fTPCParam->GetResBin(0);
1863 Float_t *weight = & (fTPCParam->GetResWeight(0));
1865 if (n>0) for (Int_t i =0; i<n; i++){
1866 Int_t pad=index[1]+centralPad; //in digit coordinates central pad has coordinate 0
1869 Int_t time=index[2];
1870 Float_t qweight = *(weight)*eltoadcfac;
1872 if (m1!=0) signal.UncheckedAt(pad,time)+=qweight;
1873 total.UncheckedAt(pad,time)+=qweight;
1874 if (indexRange[0]>pad) indexRange[0]=pad;
1875 if (indexRange[1]<pad) indexRange[1]=pad;
1876 if (indexRange[2]>time) indexRange[2]=time;
1877 if (indexRange[3]<time) indexRange[3]=time;
1884 } // end of loop over electrons
1886 return label; // returns track label when finished
1889 //_____________________________________________________________________________
1890 void AliTPC::GetList(Float_t label,Int_t np,AliTPCFastMatrix *m,
1891 Int_t *indexRange, Float_t **pList)
1893 //----------------------------------------------------------------------
1894 // Updates the list of tracks contributing to digits for a given row
1895 //----------------------------------------------------------------------
1897 //-----------------------------------------------------------------
1898 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1899 //-----------------------------------------------------------------
1901 AliTPCFastMatrix &signal = *m;
1903 // lop over nonzero digits
1905 for(Int_t it=indexRange[2];it<indexRange[3]+1;it++){
1906 for(Int_t ip=indexRange[0];ip<indexRange[1]+1;ip++){
1909 // accept only the contribution larger than 500 electrons (1/2 s_noise)
1911 if(signal(ip,it)<0.5) continue;
1914 Int_t globalIndex = it*np+ip; // globalIndex starts from 0!
1916 if(!pList[globalIndex]){
1919 // Create new list (6 elements - 3 signals and 3 labels),
1922 pList[globalIndex] = new Float_t [6];
1926 *pList[globalIndex] = -1.;
1927 *(pList[globalIndex]+1) = -1.;
1928 *(pList[globalIndex]+2) = -1.;
1929 *(pList[globalIndex]+3) = -1.;
1930 *(pList[globalIndex]+4) = -1.;
1931 *(pList[globalIndex]+5) = -1.;
1934 *pList[globalIndex] = label;
1935 *(pList[globalIndex]+3) = signal(ip,it);
1939 // check the signal magnitude
1941 Float_t highest = *(pList[globalIndex]+3);
1942 Float_t middle = *(pList[globalIndex]+4);
1943 Float_t lowest = *(pList[globalIndex]+5);
1946 // compare the new signal with already existing list
1949 if(signal(ip,it)<lowest) continue; // neglect this track
1953 if (signal(ip,it)>highest){
1954 *(pList[globalIndex]+5) = middle;
1955 *(pList[globalIndex]+4) = highest;
1956 *(pList[globalIndex]+3) = signal(ip,it);
1958 *(pList[globalIndex]+2) = *(pList[globalIndex]+1);
1959 *(pList[globalIndex]+1) = *pList[globalIndex];
1960 *pList[globalIndex] = label;
1962 else if (signal(ip,it)>middle){
1963 *(pList[globalIndex]+5) = middle;
1964 *(pList[globalIndex]+4) = signal(ip,it);
1966 *(pList[globalIndex]+2) = *(pList[globalIndex]+1);
1967 *(pList[globalIndex]+1) = label;
1970 *(pList[globalIndex]+5) = signal(ip,it);
1971 *(pList[globalIndex]+2) = label;
1975 } // end of loop over pads
1976 } // end of loop over time bins
1981 //___________________________________________________________________
1982 void AliTPC::MakeSector(Int_t isec,Int_t nrows,TTree *TH,
1983 Stat_t ntracks,TObjArray **row)
1986 //-----------------------------------------------------------------
1987 // Prepares the sector digitization, creates the vectors of
1988 // tracks for each row of this sector. The track vector
1989 // contains the track label and the position of electrons.
1990 //-----------------------------------------------------------------
1992 //-----------------------------------------------------------------
1993 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1994 //-----------------------------------------------------------------
1996 Float_t gasgain = fTPCParam->GetGasGain();
2000 AliTPChit *tpcHit; // pointer to a sigle TPC hit
2003 if (fHitType>1) branch = TH->GetBranch("TPC2");
2004 else branch = TH->GetBranch("TPC");
2007 //----------------------------------------------
2008 // Create TObjArray-s, one for each row,
2009 // each TObjArray will store the AliTPCFastVectors
2010 // of electrons, one AliTPCFastVectors per each track.
2011 //----------------------------------------------
2013 Int_t *nofElectrons = new Int_t [nrows+2]; // electron counter for each row
2014 AliTPCFastVector **tracks = new AliTPCFastVector* [nrows+2]; //pointers to the track vectors
2016 for(i=0; i<nrows+2; i++){
2017 row[i] = new TObjArray;
2024 //--------------------------------------------------------------------
2025 // Loop over tracks, the "track" contains the full history
2026 //--------------------------------------------------------------------
2028 Int_t previousTrack,currentTrack;
2029 previousTrack = -1; // nothing to store so far!
2031 for(Int_t track=0;track<ntracks;track++){
2032 Bool_t isInSector=kTRUE;
2034 isInSector = TrackInVolume(isec,track);
2035 if (!isInSector) continue;
2037 branch->GetEntry(track); // get next track
2041 tpcHit = (AliTPChit*)FirstHit(-1);
2043 //--------------------------------------------------------------
2045 //--------------------------------------------------------------
2050 Int_t sector=tpcHit->fSector; // sector number
2052 tpcHit = (AliTPChit*) NextHit();
2056 currentTrack = tpcHit->Track(); // track number
2059 if(currentTrack != previousTrack){
2061 // store already filled fTrack
2063 for(i=0;i<nrows+2;i++){
2064 if(previousTrack != -1){
2065 if(nofElectrons[i]>0){
2066 AliTPCFastVector &v = *tracks[i];
2067 v(0) = previousTrack;
2068 tracks[i]->ResizeTo(4*nofElectrons[i]+1); // shrink if necessary
2069 row[i]->Add(tracks[i]);
2072 delete tracks[i]; // delete empty AliTPCFastVector
2078 tracks[i] = new AliTPCFastVector(481); // AliTPCFastVectors for the next fTrack
2080 } // end of loop over rows
2082 previousTrack=currentTrack; // update track label
2085 Int_t qI = (Int_t) (tpcHit->fQ); // energy loss (number of electrons)
2087 //---------------------------------------------------
2088 // Calculate the electron attachment probability
2089 //---------------------------------------------------
2092 Float_t time = 1.e6*(fTPCParam->GetZLength()-TMath::Abs(tpcHit->Z()))
2093 /fTPCParam->GetDriftV();
2095 Float_t attProb = fTPCParam->GetAttCoef()*
2096 fTPCParam->GetOxyCont()*time; // fraction!
2098 //-----------------------------------------------
2099 // Loop over electrons
2100 //-----------------------------------------------
2103 for(Int_t nel=0;nel<qI;nel++){
2104 // skip if electron lost due to the attachment
2105 if((gRandom->Rndm(0)) < attProb) continue; // electron lost!
2110 // protection for the nonphysical avalanche size (10**6 maximum)
2112 Double_t rn=TMath::Max(gRandom->Rndm(0),1.93e-22);
2113 xyz[3]= (Float_t) (-gasgain*TMath::Log(rn));
2116 TransportElectron(xyz,index);
2118 fTPCParam->GetPadRow(xyz,index);
2119 // row 0 - cross talk from the innermost row
2120 // row fNRow+1 cross talk from the outermost row
2121 rowNumber = index[2]+1;
2122 //transform position to local digit coordinates
2123 //relative to nearest pad row
2124 if ((rowNumber<0)||rowNumber>fTPCParam->GetNRow(isec)+1) continue;
2126 if (isec <fTPCParam->GetNInnerSector()) {
2127 x1 = xyz[1]*fTPCParam->GetInnerPadPitchWidth();
2128 y1 = fTPCParam->GetYInner(rowNumber);
2131 x1=xyz[1]*fTPCParam->GetOuterPadPitchWidth();
2132 y1 = fTPCParam->GetYOuter(rowNumber);
2134 // gain inefficiency at the wires edges - linear
2137 if(x1>y1) xyz[3]*=TMath::Max(1.e-6,(y1-x1+1.));
2139 nofElectrons[rowNumber]++;
2140 //----------------------------------
2141 // Expand vector if necessary
2142 //----------------------------------
2143 if(nofElectrons[rowNumber]>120){
2144 Int_t range = tracks[rowNumber]->GetNrows();
2145 if((nofElectrons[rowNumber])>(range-1)/4){
2147 tracks[rowNumber]->ResizeTo(range+400); // Add 100 electrons
2151 AliTPCFastVector &v = *tracks[rowNumber];
2152 Int_t idx = 4*nofElectrons[rowNumber]-3;
2153 Real_t * position = &(((AliTPCFastVector&)v).UncheckedAt(idx)); //make code faster
2154 memcpy(position,xyz,4*sizeof(Float_t));
2156 } // end of loop over electrons
2158 tpcHit = (AliTPChit*)NextHit();
2160 } // end of loop over hits
2161 } // end of loop over tracks
2164 // store remaining track (the last one) if not empty
2167 for(i=0;i<nrows+2;i++){
2168 if(nofElectrons[i]>0){
2169 AliTPCFastVector &v = *tracks[i];
2170 v(0) = previousTrack;
2171 tracks[i]->ResizeTo(4*nofElectrons[i]+1); // shrink if necessary
2172 row[i]->Add(tracks[i]);
2181 delete [] nofElectrons;
2184 } // end of MakeSector
2187 //_____________________________________________________________________________
2191 // Initialise TPC detector after definition of geometry
2196 printf("\n%s: ",ClassName());
2197 for(i=0;i<35;i++) printf("*");
2198 printf(" TPC_INIT ");
2199 for(i=0;i<35;i++) printf("*");
2200 printf("\n%s: ",ClassName());
2202 for(i=0;i<80;i++) printf("*");
2207 //_____________________________________________________________________________
2208 void AliTPC::MakeBranch(Option_t* option)
2211 // Create Tree branches for the TPC.
2213 if(GetDebug()) Info("MakeBranch","");
2214 Int_t buffersize = 4000;
2215 char branchname[10];
2216 sprintf(branchname,"%s",GetName());
2218 const char *h = strstr(option,"H");
2220 if ( h && (fHitType<=1) && (fHits == 0x0)) fHits = new TClonesArray("AliTPChit", 176);//skowron 20.06.03
2222 AliDetector::MakeBranch(option);
2224 const char *d = strstr(option,"D");
2226 if (fDigits && fLoader->TreeD() && d)
2228 MakeBranchInTree(gAlice->TreeD(), branchname, &fDigits, buffersize, 0);
2231 if (fHitType>1) MakeBranch2(option,0); // MI change 14.09.2000
2234 //_____________________________________________________________________________
2235 void AliTPC::ResetDigits()
2238 // Reset number of digits and the digits array for this detector
2241 if (fDigits) fDigits->Clear();
2244 //_____________________________________________________________________________
2245 void AliTPC::SetSecAL(Int_t sec)
2247 //---------------------------------------------------
2248 // Activate/deactivate selection for lower sectors
2249 //---------------------------------------------------
2251 //-----------------------------------------------------------------
2252 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2253 //-----------------------------------------------------------------
2257 //_____________________________________________________________________________
2258 void AliTPC::SetSecAU(Int_t sec)
2260 //----------------------------------------------------
2261 // Activate/deactivate selection for upper sectors
2262 //---------------------------------------------------
2264 //-----------------------------------------------------------------
2265 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2266 //-----------------------------------------------------------------
2270 //_____________________________________________________________________________
2271 void AliTPC::SetSecLows(Int_t s1,Int_t s2,Int_t s3,Int_t s4,Int_t s5, Int_t s6)
2273 //----------------------------------------
2274 // Select active lower sectors
2275 //----------------------------------------
2277 //-----------------------------------------------------------------
2278 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2279 //-----------------------------------------------------------------
2289 //_____________________________________________________________________________
2290 void AliTPC::SetSecUps(Int_t s1,Int_t s2,Int_t s3,Int_t s4,Int_t s5, Int_t s6,
2291 Int_t s7, Int_t s8 ,Int_t s9 ,Int_t s10,
2292 Int_t s11 , Int_t s12)
2294 //--------------------------------
2295 // Select active upper sectors
2296 //--------------------------------
2298 //-----------------------------------------------------------------
2299 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2300 //-----------------------------------------------------------------
2316 //_____________________________________________________________________________
2317 void AliTPC::SetSens(Int_t sens)
2320 //-------------------------------------------------------------
2321 // Activates/deactivates the sensitive strips at the center of
2322 // the pad row -- this is for the space-point resolution calculations
2323 //-------------------------------------------------------------
2325 //-----------------------------------------------------------------
2326 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2327 //-----------------------------------------------------------------
2333 void AliTPC::SetSide(Float_t side=0.)
2335 // choice of the TPC side
2340 //____________________________________________________________________________
2341 void AliTPC::SetGasMixt(Int_t nc,Int_t c1,Int_t c2,Int_t c3,Float_t p1,
2342 Float_t p2,Float_t p3)
2345 // gax mixture definition
2359 //_____________________________________________________________________________
2361 void AliTPC::TransportElectron(Float_t *xyz, Int_t *index)
2364 // electron transport taking into account:
2366 // 2.ExB at the wires
2367 // 3. nonisochronity
2369 // xyz and index must be already transformed to system 1
2372 fTPCParam->Transform1to2(xyz,index);
2375 Float_t driftl=xyz[2];
2376 if(driftl<0.01) driftl=0.01;
2377 driftl=TMath::Sqrt(driftl);
2378 Float_t sigT = driftl*(fTPCParam->GetDiffT());
2379 Float_t sigL = driftl*(fTPCParam->GetDiffL());
2380 xyz[0]=gRandom->Gaus(xyz[0],sigT);
2381 xyz[1]=gRandom->Gaus(xyz[1],sigT);
2382 xyz[2]=gRandom->Gaus(xyz[2],sigL);
2386 if (fTPCParam->GetMWPCReadout()==kTRUE){
2387 Float_t dx = fTPCParam->Transform2to2NearestWire(xyz,index);
2388 xyz[1]+=dx*(fTPCParam->GetOmegaTau());
2390 //add nonisochronity (not implemented yet)
2393 ClassImp(AliTPCdigit)
2395 //_____________________________________________________________________________
2396 AliTPCdigit::AliTPCdigit(Int_t *tracks, Int_t *digits):
2400 // Creates a TPC digit object
2402 fSector = digits[0];
2403 fPadRow = digits[1];
2406 fSignal = digits[4];
2412 //_____________________________________________________________________________
2413 AliTPChit::AliTPChit(Int_t shunt, Int_t track, Int_t *vol, Float_t *hits):
2417 // Creates a TPC hit object
2427 //________________________________________________________________________
2428 // Additional code because of the AliTPCTrackHitsV2
2430 void AliTPC::MakeBranch2(Option_t *option,const char *file)
2433 // Create a new branch in the current Root Tree
2434 // The branch of fHits is automatically split
2435 // MI change 14.09.2000
2436 if(GetDebug()) Info("MakeBranch2","");
2437 if (fHitType<2) return;
2438 char branchname[10];
2439 sprintf(branchname,"%s2",GetName());
2441 // Get the pointer to the header
2442 const char *cH = strstr(option,"H");
2444 if (fTrackHits && TreeH() && cH && fHitType&4)
2446 if(GetDebug()) Info("MakeBranch2","Making branch for Type 4 Hits");
2447 TreeH()->Branch(branchname,"AliTPCTrackHitsV2",&fTrackHits,fBufferSize,99);
2450 if (fTrackHitsOld && TreeH() && cH && fHitType&2)
2452 if(GetDebug()) Info("MakeBranch2","Making branch for Type 2 Hits");
2453 AliObjectBranch * branch = new AliObjectBranch(branchname,"AliTPCTrackHits",&fTrackHitsOld,
2454 TreeH(),fBufferSize,99);
2455 TreeH()->GetListOfBranches()->Add(branch);
2459 void AliTPC::SetTreeAddress()
2461 //Sets tree address for hits
2464 if (fHits == 0x0 ) fHits = new TClonesArray("AliTPChit", 176);//skowron 20.06.03
2465 AliDetector::SetTreeAddress();
2467 if (fHitType>1) SetTreeAddress2();
2470 void AliTPC::SetTreeAddress2()
2473 // Set branch address for the TrackHits Tree
2475 if(GetDebug()) Info("SetTreeAddress2","");
2478 char branchname[20];
2479 sprintf(branchname,"%s2",GetName());
2481 // Branch address for hit tree
2482 TTree *treeH = TreeH();
2483 if ((treeH)&&(fHitType&4)) {
2484 branch = treeH->GetBranch(branchname);
2487 branch->SetAddress(&fTrackHits);
2488 cout<<"AliTPC::SetTreeAddress2 fHitType&4 Setting"<<endl;
2490 else cout<<"AliTPC::SetTreeAddress2 fHitType&4 Failed"<<endl;
2492 if ((treeH)&&(fHitType&2)) {
2493 branch = treeH->GetBranch(branchname);
2496 branch->SetAddress(&fTrackHitsOld);
2497 cout<<"AliTPC::SetTreeAddress2 fHitType&2 Setting"<<endl;
2499 else cout<<"AliTPC::SetTreeAddress2 fHitType&2 Failed"<<endl;
2501 //set address to TREETR
2503 TTree *treeTR = TreeTR();
2504 if (treeTR && fTrackReferences) {
2505 branch = treeTR->GetBranch(GetName());
2506 if (branch) branch->SetAddress(&fTrackReferences);
2511 void AliTPC::FinishPrimary()
2513 if (fTrackHits &&fHitType&4) fTrackHits->FlushHitStack();
2514 if (fTrackHitsOld && fHitType&2) fTrackHitsOld->FlushHitStack();
2518 void AliTPC::AddHit2(Int_t track, Int_t *vol, Float_t *hits)
2521 // add hit to the list
2524 int primary = gAlice->GetPrimary(track);
2525 gAlice->Particle(primary)->SetBit(kKeepBit);
2529 gAlice->FlagTrack(track);
2531 //AliTPChit *hit = (AliTPChit*)fHits->UncheckedAt(fNhits-1);
2532 //if (hit->fTrack!=rtrack)
2533 // cout<<"bad track number\n";
2534 if (fTrackHits && fHitType&4)
2535 fTrackHits->AddHitKartez(vol[0],rtrack, hits[0],
2536 hits[1],hits[2],(Int_t)hits[3]);
2537 if (fTrackHitsOld &&fHitType&2 )
2538 fTrackHitsOld->AddHitKartez(vol[0],rtrack, hits[0],
2539 hits[1],hits[2],(Int_t)hits[3]);
2543 void AliTPC::ResetHits()
2545 if (fHitType&1) AliDetector::ResetHits();
2546 if (fHitType>1) ResetHits2();
2549 void AliTPC::ResetHits2()
2553 if (fTrackHits && fHitType&4) fTrackHits->Clear();
2554 if (fTrackHitsOld && fHitType&2) fTrackHitsOld->Clear();
2558 AliHit* AliTPC::FirstHit(Int_t track)
2560 if (fHitType>1) return FirstHit2(track);
2561 return AliDetector::FirstHit(track);
2563 AliHit* AliTPC::NextHit()
2565 if (fHitType>1) return NextHit2();
2567 return AliDetector::NextHit();
2570 AliHit* AliTPC::FirstHit2(Int_t track)
2573 // Initialise the hit iterator
2574 // Return the address of the first hit for track
2575 // If track>=0 the track is read from disk
2576 // while if track<0 the first hit of the current
2577 // track is returned
2580 gAlice->ResetHits();
2581 TreeH()->GetEvent(track);
2584 if (fTrackHits && fHitType&4) {
2585 fTrackHits->First();
2586 return fTrackHits->GetHit();
2588 if (fTrackHitsOld && fHitType&2) {
2589 fTrackHitsOld->First();
2590 return fTrackHitsOld->GetHit();
2596 AliHit* AliTPC::NextHit2()
2599 //Return the next hit for the current track
2602 if (fTrackHitsOld && fHitType&2) {
2603 fTrackHitsOld->Next();
2604 return fTrackHitsOld->GetHit();
2608 return fTrackHits->GetHit();
2614 void AliTPC::LoadPoints(Int_t)
2618 /* if(fHitType==1) return AliDetector::LoadPoints(a);
2621 if(fHitType==1) AliDetector::LoadPoints(a);
2622 else LoadPoints2(a);
2629 void AliTPC::RemapTrackHitIDs(Int_t *map)
2631 if (!fTrackHits) return;
2633 if (fTrackHitsOld && fHitType&2){
2634 AliObjectArray * arr = fTrackHitsOld->fTrackHitsInfo;
2635 for (UInt_t i=0;i<arr->GetSize();i++){
2636 AliTrackHitsInfo * info = (AliTrackHitsInfo *)(arr->At(i));
2637 info->fTrackID = map[info->fTrackID];
2640 if (fTrackHitsOld && fHitType&4){
2641 TClonesArray * arr = fTrackHits->GetArray();;
2642 for (Int_t i=0;i<arr->GetEntriesFast();i++){
2643 AliTrackHitsParamV2 * info = (AliTrackHitsParamV2 *)(arr->At(i));
2644 info->fTrackID = map[info->fTrackID];
2649 Bool_t AliTPC::TrackInVolume(Int_t id,Int_t track)
2651 //return bool information - is track in given volume
2652 //load only part of the track information
2653 //return true if current track is in volume
2656 if (fTrackHitsOld && fHitType&2) {
2657 TBranch * br = TreeH()->GetBranch("fTrackHitsInfo");
2658 br->GetEvent(track);
2659 AliObjectArray * ar = fTrackHitsOld->fTrackHitsInfo;
2660 for (UInt_t j=0;j<ar->GetSize();j++){
2661 if ( ((AliTrackHitsInfo*)ar->At(j))->fVolumeID==id) return kTRUE;
2665 if (fTrackHits && fHitType&4) {
2666 TBranch * br1 = TreeH()->GetBranch("fVolumes");
2667 TBranch * br2 = TreeH()->GetBranch("fNVolumes");
2668 br2->GetEvent(track);
2669 br1->GetEvent(track);
2670 Int_t *volumes = fTrackHits->GetVolumes();
2671 Int_t nvolumes = fTrackHits->GetNVolumes();
2672 if (!volumes && nvolumes>0) {
2673 printf("Problematic track\t%d\t%d",track,nvolumes);
2676 for (Int_t j=0;j<nvolumes; j++)
2677 if (volumes[j]==id) return kTRUE;
2681 TBranch * br = TreeH()->GetBranch("fSector");
2682 br->GetEvent(track);
2683 for (Int_t j=0;j<fHits->GetEntriesFast();j++){
2684 if ( ((AliTPChit*)fHits->At(j))->fSector==id) return kTRUE;
2691 //_____________________________________________________________________________
2692 void AliTPC::LoadPoints2(Int_t)
2695 // Store x, y, z of all hits in memory
2697 if (fTrackHits == 0 && fTrackHitsOld==0) return;
2700 if (fHitType&4) nhits = fTrackHits->GetEntriesFast();
2701 if (fHitType&2) nhits = fTrackHitsOld->GetEntriesFast();
2703 if (nhits == 0) return;
2704 Int_t tracks = gAlice->GetNtrack();
2705 if (fPoints == 0) fPoints = new TObjArray(tracks);
2708 Int_t *ntrk=new Int_t[tracks];
2709 Int_t *limi=new Int_t[tracks];
2710 Float_t **coor=new Float_t*[tracks];
2711 for(Int_t i=0;i<tracks;i++) {
2717 AliPoints *points = 0;
2720 Int_t chunk=nhits/4+1;
2722 // Loop over all the hits and store their position
2724 ahit = FirstHit2(-1);
2726 trk=ahit->GetTrack();
2727 if(ntrk[trk]==limi[trk]) {
2729 // Initialise a new track
2730 fp=new Float_t[3*(limi[trk]+chunk)];
2732 memcpy(fp,coor[trk],sizeof(Float_t)*3*limi[trk]);
2733 delete [] coor[trk];
2740 fp[3*ntrk[trk] ] = ahit->X();
2741 fp[3*ntrk[trk]+1] = ahit->Y();
2742 fp[3*ntrk[trk]+2] = ahit->Z();
2750 for(trk=0; trk<tracks; ++trk) {
2752 points = new AliPoints();
2753 points->SetMarkerColor(GetMarkerColor());
2754 points->SetMarkerSize(GetMarkerSize());
2755 points->SetDetector(this);
2756 points->SetParticle(trk);
2757 points->SetPolyMarker(ntrk[trk],coor[trk],GetMarkerStyle());
2758 fPoints->AddAt(points,trk);
2759 delete [] coor[trk];
2769 //_____________________________________________________________________________
2770 void AliTPC::LoadPoints3(Int_t)
2773 // Store x, y, z of all hits in memory
2774 // - only intersection point with pad row
2775 if (fTrackHits == 0) return;
2777 Int_t nhits = fTrackHits->GetEntriesFast();
2778 if (nhits == 0) return;
2779 Int_t tracks = gAlice->GetNtrack();
2780 if (fPoints == 0) fPoints = new TObjArray(2*tracks);
2781 fPoints->Expand(2*tracks);
2784 Int_t *ntrk=new Int_t[tracks];
2785 Int_t *limi=new Int_t[tracks];
2786 Float_t **coor=new Float_t*[tracks];
2787 for(Int_t i=0;i<tracks;i++) {
2793 AliPoints *points = 0;
2796 Int_t chunk=nhits/4+1;
2798 // Loop over all the hits and store their position
2800 ahit = FirstHit2(-1);
2801 //for (Int_t hit=0;hit<nhits;hit++) {
2805 // ahit = (AliHit*)fHits->UncheckedAt(hit);
2806 trk=ahit->GetTrack();
2807 Float_t x[3]={ahit->X(),ahit->Y(),ahit->Z()};
2808 Int_t index[3]={1,((AliTPChit*)ahit)->fSector,0};
2809 Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
2810 if (currentrow!=lastrow){
2811 lastrow = currentrow;
2812 //later calculate intersection point
2813 if(ntrk[trk]==limi[trk]) {
2815 // Initialise a new track
2816 fp=new Float_t[3*(limi[trk]+chunk)];
2818 memcpy(fp,coor[trk],sizeof(Float_t)*3*limi[trk]);
2819 delete [] coor[trk];
2826 fp[3*ntrk[trk] ] = ahit->X();
2827 fp[3*ntrk[trk]+1] = ahit->Y();
2828 fp[3*ntrk[trk]+2] = ahit->Z();
2835 for(trk=0; trk<tracks; ++trk) {
2837 points = new AliPoints();
2838 points->SetMarkerColor(GetMarkerColor()+1);
2839 points->SetMarkerStyle(5);
2840 points->SetMarkerSize(0.2);
2841 points->SetDetector(this);
2842 points->SetParticle(trk);
2843 // points->SetPolyMarker(ntrk[trk],coor[trk],GetMarkerStyle()20);
2844 points->SetPolyMarker(ntrk[trk],coor[trk],30);
2845 fPoints->AddAt(points,tracks+trk);
2846 delete [] coor[trk];
2857 void AliTPC::FindTrackHitsIntersection(TClonesArray * arr)
2861 //fill clones array with intersection of current point with the
2866 const Int_t kcmaxhits=30000;
2867 AliTPCFastVector * xxxx = new AliTPCFastVector(kcmaxhits*4);
2868 AliTPCFastVector & xxx = *xxxx;
2869 Int_t maxhits = kcmaxhits;
2872 AliTPChit * tpcHit=0;
2873 tpcHit = (AliTPChit*)FirstHit2(-1);
2874 Int_t currentIndex=0;
2875 Int_t lastrow=-1; //last writen row
2878 if (tpcHit==0) continue;
2879 sector=tpcHit->fSector; // sector number
2880 ipart=tpcHit->Track();
2884 Float_t x[3]={tpcHit->X(),tpcHit->Y(),tpcHit->Z()};
2885 Int_t index[3]={1,sector,0};
2886 Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
2887 if (currentrow<0) continue;
2888 if (lastrow<0) lastrow=currentrow;
2889 if (currentrow==lastrow){
2890 if ( currentIndex>=maxhits){
2892 xxx.ResizeTo(4*maxhits);
2894 xxx(currentIndex*4)=x[0];
2895 xxx(currentIndex*4+1)=x[1];
2896 xxx(currentIndex*4+2)=x[2];
2897 xxx(currentIndex*4+3)=tpcHit->fQ;
2901 if (currentIndex>2){
2913 for (Int_t index=0;index<currentIndex;index++){
2915 x=x2=x3=x4=xxx(index*4);
2923 sumy+=xxx(index*4+1);
2924 sumxy+=xxx(index*4+1)*x;
2925 sumx2y+=xxx(index*4+1)*x2;
2926 sumz+=xxx(index*4+2);
2927 sumxz+=xxx(index*4+2)*x;
2928 sumx2z+=xxx(index*4+2)*x2;
2929 sumq+=xxx(index*4+3);
2931 Float_t centralPad = (fTPCParam->GetNPads(sector,lastrow)-1)/2;
2932 Float_t det=currentIndex*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumx*sumx4-sumx2*sumx3)+
2933 sumx2*(sumx*sumx3-sumx2*sumx2);
2935 Float_t detay=sumy*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxy*sumx4-sumx2y*sumx3)+
2936 sumx2*(sumxy*sumx3-sumx2y*sumx2);
2937 Float_t detaz=sumz*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxz*sumx4-sumx2z*sumx3)+
2938 sumx2*(sumxz*sumx3-sumx2z*sumx2);
2940 Float_t detby=currentIndex*(sumxy*sumx4-sumx2y*sumx3)-sumy*(sumx*sumx4-sumx2*sumx3)+
2941 sumx2*(sumx*sumx2y-sumx2*sumxy);
2942 Float_t detbz=currentIndex*(sumxz*sumx4-sumx2z*sumx3)-sumz*(sumx*sumx4-sumx2*sumx3)+
2943 sumx2*(sumx*sumx2z-sumx2*sumxz);
2945 Float_t y=detay/det+centralPad;
2946 Float_t z=detaz/det;
2947 Float_t by=detby/det; //y angle
2948 Float_t bz=detbz/det; //z angle
2949 sumy/=Float_t(currentIndex);
2950 sumz/=Float_t(currentIndex);
2952 AliComplexCluster cl;
2958 cl.fTracks[0]=ipart;
2960 AliTPCClustersRow * row = (fClustersArray->GetRow(sector,lastrow));
2961 if (row!=0) row->InsertCluster(&cl);
2964 } //end of calculating cluster for given row
2966 } // end of loop over hits
2970 //_______________________________________________________________________________
2971 void AliTPC::Digits2Reco(Int_t firstevent,Int_t lastevent)
2973 // produces rec points from digits and writes them on the root file
2974 // AliTPCclusters.root
2976 TDirectory *cwd = gDirectory;
2979 AliTPCParamSR *dig=(AliTPCParamSR *)gDirectory->Get("75x40_100x60");
2981 printf("You are running 2 pad-length geom hits with 3 pad-length geom digits\n");
2983 dig = new AliTPCParamSR();
2987 dig=(AliTPCParamSR *)gDirectory->Get("75x40_100x60_150x60");
2990 printf("No TPC parameters found\n");
2995 cout<<"AliTPC::Digits2Reco: TPC parameteres have been set"<<endl;
2997 if(!gSystem->Getenv("CONFIG_FILE")){
2998 out=TFile::Open("AliTPCclusters.root","recreate");
3004 tmp1=gSystem->Getenv("CONFIG_FILE_PREFIX");
3005 tmp2=gSystem->Getenv("CONFIG_OUTDIR");
3006 sprintf(tmp3,"%s%s/AliTPCclusters.root",tmp1,tmp2);
3007 out=TFile::Open(tmp3,"recreate");
3011 cout<<"AliTPC::Digits2Reco - determination of rec points begins"<<endl;
3014 for(Int_t iev=firstevent;iev<lastevent+1;iev++){
3016 printf("Processing event %d\n",iev);
3017 Digits2Clusters(iev);
3019 cout<<"AliTPC::Digits2Reco - determination of rec points ended"<<endl;
3028 AliLoader* AliTPC::MakeLoader(const char* topfoldername)
3030 cout<<"AliTPC::MakeLoader ";
3032 fLoader = new AliTPCLoader(GetName(),topfoldername);
3036 cout<<"Success"<<endl;
3040 cout<<"Failure"<<endl;
3046 ////////////////////////////////////////////////////////////////////////
3047 AliTPCParam* AliTPC::LoadTPCParam(TFile *file) {
3049 // load TPC paarmeters from a given file or create new if the object
3050 // is not found there
3051 // 12/05/2003 This method should be moved to the AliTPCLoader
3052 // and one has to decide where to store the TPC parameters
3055 sprintf(paramName,"75x40_100x60_150x60");
3056 AliTPCParam *paramTPC=(AliTPCParam*)file->Get(paramName);
3058 cout<<"TPC parameters "<<paramName<<" found."<<endl;
3060 cerr<<"TPC parameters not found. Create new (they may be incorrect)."
3062 paramTPC = new AliTPCParamSR;
3066 // the older version of parameters can be accessed with this code.
3067 // In some cases, we have old parameters saved in the file but
3068 // digits were created with new parameters, it can be distinguish
3069 // by the name of TPC TreeD. The code here is just for the case
3070 // we would need to compare with old data, uncomment it if needed.
3072 // char paramName[50];
3073 // sprintf(paramName,"75x40_100x60");
3074 // AliTPCParam *paramTPC=(AliTPCParam*)in->Get(paramName);
3076 // cout<<"TPC parameters "<<paramName<<" found."<<endl;
3078 // sprintf(paramName,"75x40_100x60_150x60");
3079 // paramTPC=(AliTPCParam*)in->Get(paramName);
3081 // cout<<"TPC parameters "<<paramName<<" found."<<endl;
3083 // cerr<<"TPC parameters not found. Create new (they may be incorrect)."
3085 // paramTPC = new AliTPCParamSR;