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>
41 #include <TGeoGlobalMagField.h>
42 #include <TInterpreter.h>
45 #include <TObjectTable.h>
46 #include <TParticle.h>
49 #include <TStopwatch.h>
54 #include <TVirtualMC.h>
55 #include <TParameter.h>
57 #include "AliDigits.h"
60 #include "AliRunLoader.h"
61 #include "AliSimDigits.h"
64 #include "AliTPCDigitsArray.h"
65 #include "AliTPCLoader.h"
66 #include "AliTPCPRF2D.h"
67 #include "AliTPCParamSR.h"
68 #include "AliTPCRF1D.h"
69 #include "AliTPCTrackHitsV2.h"
70 #include "AliTrackReference.h"
73 #include "AliTPCDigitizer.h"
74 #include "AliTPCBuffer.h"
75 #include "AliTPCDDLRawData.h"
77 #include "AliTPCcalibDB.h"
78 #include "AliTPCCalPad.h"
79 #include "AliTPCCalROC.h"
80 #include "AliTPCExB.h"
81 #include "AliRawReader.h"
82 #include "AliTPCRawStreamV3.h"
83 #include "TTreeStream.h"
86 //_____________________________________________________________________________
87 AliTPC::AliTPC():AliDetector(),
97 fPrimaryIonisation(0),
108 // Default constructor
111 for(Int_t i=0;i<4;i++) fCurrentIndex[i]=0;
113 // fTrackHitsOld = 0;
114 #if ROOT_VERSION_CODE >= ROOT_VERSION(4,0,1)
115 fHitType = 4; // ROOT containers
117 fHitType = 2; //default CONTAINERS - based on ROOT structure
121 //_____________________________________________________________________________
122 AliTPC::AliTPC(const char *name, const char *title)
123 : AliDetector(name,title),
133 fPrimaryIonisation(0),
144 // Standard constructor
148 // Initialise arrays of hits and digits
149 fHits = new TClonesArray("AliTPChit", 176);
150 gAlice->GetMCApp()->AddHitList(fHits);
152 fTrackHits = new AliTPCTrackHitsV2;
153 fTrackHits->SetHitPrecision(0.002);
154 fTrackHits->SetStepPrecision(0.003);
155 fTrackHits->SetMaxDistance(100);
157 //fTrackHitsOld = new AliTPCTrackHits; //MI - 13.09.2000
158 //fTrackHitsOld->SetHitPrecision(0.002);
159 //fTrackHitsOld->SetStepPrecision(0.003);
160 //fTrackHitsOld->SetMaxDistance(100);
163 #if ROOT_VERSION_CODE >= ROOT_VERSION(4,0,1)
164 fHitType = 4; // ROOT containers
169 for(Int_t i=0;i<4;i++) fCurrentIndex[i]=0;
174 // Initialise color attributes
175 //PH SetMarkerColor(kYellow);
178 // Set TPC parameters
182 if (!strcmp(title,"Default")) {
183 //fTPCParam = new AliTPCParamSR;
184 fTPCParam = AliTPCcalibDB::Instance()->GetParameters();
186 AliWarning("In Config.C you must set non-default parameters.");
191 void AliTPC::CreateDebugStremer(){
193 // Create Debug streamer to check simulation
195 fDebugStreamer = new TTreeSRedirector("TPCSimdebug.root");
197 //_____________________________________________________________________________
208 delete fTrackHits; //MI 15.09.2000
209 // delete fTrackHitsOld; //MI 10.12.2001
212 delete [] fNoiseTable;
213 delete [] fActiveSectors;
214 if (fDebugStreamer) delete fDebugStreamer;
217 //_____________________________________________________________________________
218 void AliTPC::AddHit(Int_t track, Int_t *vol, Float_t *hits)
221 // Add a hit to the list
224 TClonesArray &lhits = *fHits;
225 new(lhits[fNhits++]) AliTPChit(fIshunt,track,vol,hits);
228 AddHit2(track,vol,hits);
231 //_____________________________________________________________________________
232 void AliTPC::CreateMaterials()
234 //-----------------------------------------------
235 // Create Materials for for TPC simulations
236 //-----------------------------------------------
238 //-----------------------------------------------------------------
239 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
240 //-----------------------------------------------------------------
242 Int_t iSXFLD=((AliMagF*)TGeoGlobalMagField::Instance()->GetField())->Integ();
243 Float_t sXMGMX=((AliMagF*)TGeoGlobalMagField::Instance()->GetField())->Max();
245 Float_t amat[5]; // atomic numbers
246 Float_t zmat[5]; // z
247 Float_t wmat[5]; // proportions
253 //***************** Gases *************************
256 //--------------------------------------------------------------
257 // gases - air and CO2
258 //--------------------------------------------------------------
274 AliMixture(10,"CO2",amat,zmat,density,2,wmat);
289 AliMixture(11,"Air",amat,zmat,density,2,wmat);
291 //----------------------------------------------------------------
293 //----------------------------------------------------------------
296 // Drift gases 1 - nonsensitive, 2 - sensitive
297 // Ne-CO2-N2 (90-10-5) (volume) values at 20deg and 1 atm.
298 // rho(Ne) = 0.839 g/cm^3, rho(CO2) = 1.842 g/cm^3, rho(N2) = 1.165 g/cm^3
299 // for the calculation - everything is normalized to 1
318 AliMixture(12,"Ne-CO2-N-1",amat,zmat,density,4,wmat);
319 AliMixture(13,"Ne-CO2-N-2",amat,zmat,density,4,wmat);
320 AliMixture(35,"Ne-CO2-N-3",amat,zmat,density,4,wmat);
321 //----------------------------------------------------------------------
323 //----------------------------------------------------------------------
345 AliMixture(14,"Kevlar",amat,zmat,density,-4,wmat);
366 AliMixture(15,"NOMEX",amat,zmat,density,-4,wmat);
384 AliMixture(16,"Makrolon",amat,zmat,density,-3,wmat);
402 AliMixture(17, "Tedlar",amat,zmat,density,-3,wmat);
420 AliMixture(18, "Mylar",amat,zmat,density,-3,wmat);
421 // material for "prepregs"
422 // Epoxy - C14 H20 O3
425 // prepreg1 60% C-fiber, 40% epoxy (vol)
440 AliMixture(19, "Prepreg1",amat,zmat,density,3,wmat);
442 //prepreg2 60% glass-fiber, 40% epoxy
461 AliMixture(20, "Prepreg2",amat,zmat,density,4,wmat);
463 //prepreg3 50% glass-fiber, 50% epoxy
482 AliMixture(21, "Prepreg3",amat,zmat,density,4,wmat);
484 // G10 60% SiO2 40% epoxy
503 AliMixture(22, "G10",amat,zmat,density,4,wmat);
512 AliMaterial(23,"Al",amat[0],zmat[0],density,999.,999.);
514 // Si (for electronics
521 AliMaterial(24,"Si",amat[0],zmat[0],density,999.,999.);
530 AliMaterial(25,"Cu",amat[0],zmat[0],density,999.,999.);
548 AliMixture(33,"Brass",amat,zmat,density,2,wmat);
550 // Epoxy - C14 H20 O3
566 AliMixture(26,"Epoxy",amat,zmat,density,-3,wmat);
568 // epoxy film - 90% epoxy, 10% glass fiber
588 AliMixture(34, "Epoxy-film",amat,zmat,density,4,wmat);
606 AliMixture(27,"Plexiglas",amat,zmat,density,-3,wmat);
614 AliMaterial(28,"C",amat[0],zmat[0],density,999.,999.);
616 // Fe (steel for the inner heat screen)
624 AliMaterial(29,"Fe",amat[0],zmat[0],density,999.,999.);
626 // Peek - (C6H4-O-OC6H4-O-C6H4-CO)n
641 AliMixture(30,"Peek",amat,zmat,density,-3,wmat);
656 AliMixture(31,"Alumina",amat,zmat,density,-2,wmat);
675 AliMixture(32,"Water",amat,zmat,density,-2,wmat);
678 //----------------------------------------------------------
679 // tracking media for gases
680 //----------------------------------------------------------
682 AliMedium(0, "Air", 11, 0, iSXFLD, sXMGMX, 10., 999., .1, .01, .1);
683 AliMedium(1, "Ne-CO2-N-1", 12, 0, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
684 AliMedium(2, "Ne-CO2-N-2", 13, 1, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
685 AliMedium(3,"CO2",10,0, iSXFLD, sXMGMX, 10., 999.,.1, .001, .001);
686 AliMedium(20, "Ne-CO2-N-3", 35, 1, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
687 //-----------------------------------------------------------
688 // tracking media for solids
689 //-----------------------------------------------------------
691 AliMedium(4,"Al",23,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
692 AliMedium(5,"Kevlar",14,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
693 AliMedium(6,"Nomex",15,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
694 AliMedium(7,"Makrolon",16,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
695 AliMedium(8,"Mylar",18,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
696 AliMedium(9,"Tedlar",17,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
698 AliMedium(10,"Prepreg1",19,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
699 AliMedium(11,"Prepreg2",20,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
700 AliMedium(12,"Prepreg3",21,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
701 AliMedium(13,"Epoxy",26,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
703 AliMedium(14,"Cu",25,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
704 AliMedium(15,"Si",24,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
705 AliMedium(16,"G10",22,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
706 AliMedium(17,"Plexiglas",27,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
707 AliMedium(18,"Steel",29,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
708 AliMedium(19,"Peek",30,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
709 AliMedium(21,"Alumina",31,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
710 AliMedium(22,"Water",32,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
711 AliMedium(23,"Brass",33,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
712 AliMedium(24,"Epoxyfm",34,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
715 void AliTPC::GenerNoise(Int_t tablesize)
718 //Generate table with noise
725 if (fNoiseTable) delete[] fNoiseTable;
726 fNoiseTable = new Float_t[tablesize];
727 fNoiseDepth = tablesize;
728 fCurrentNoise =0; //!index of the noise in the noise table
730 Float_t norm = fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac();
731 for (Int_t i=0;i<tablesize;i++) fNoiseTable[i]= gRandom->Gaus(0,norm);
734 Float_t AliTPC::GetNoise()
736 // get noise from table
737 // if ((fCurrentNoise%10)==0)
738 // fCurrentNoise= gRandom->Rndm()*fNoiseDepth;
739 if (fCurrentNoise>=fNoiseDepth) fCurrentNoise=0;
740 return fNoiseTable[fCurrentNoise++];
741 //gRandom->Gaus(0, fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac());
745 Bool_t AliTPC::IsSectorActive(Int_t sec) const
748 // check if the sector is active
749 if (!fActiveSectors) return kTRUE;
750 else return fActiveSectors[sec];
753 void AliTPC::SetActiveSectors(Int_t * sectors, Int_t n)
755 // activate interesting sectors
756 SetTreeAddress();//just for security
757 if (!fActiveSectors) fActiveSectors = new Bool_t[fTPCParam->GetNSector()];
758 for (Int_t i=0;i<fTPCParam->GetNSector();i++) fActiveSectors[i]=kFALSE;
759 for (Int_t i=0;i<n;i++)
760 if ((sectors[i]>=0) && sectors[i]<fTPCParam->GetNSector()) fActiveSectors[sectors[i]]=kTRUE;
764 void AliTPC::SetActiveSectors(Int_t flag)
767 // activate sectors which were hitted by tracks
769 SetTreeAddress();//just for security
770 if (fHitType==0) return; // if Clones hit - not short volume ID information
771 if (!fActiveSectors) fActiveSectors = new Bool_t[fTPCParam->GetNSector()];
773 for (Int_t i=0;i<fTPCParam->GetNSector();i++) fActiveSectors[i]=kTRUE;
776 for (Int_t i=0;i<fTPCParam->GetNSector();i++) fActiveSectors[i]=kFALSE;
777 //TBranch * branch=0;
778 if (fLoader->TreeH() == 0x0)
780 AliFatal("Can not find TreeH in folder");
783 //if (fHitType>1) branch = fLoader->TreeH()->GetBranch("TPC2");
784 if (fHitType>1) fLoader->TreeH()->GetBranch("TPC2");
785 //else branch = fLoader->TreeH()->GetBranch("TPC");
786 else fLoader->TreeH()->GetBranch("TPC");
787 Stat_t ntracks = fLoader->TreeH()->GetEntries();
788 // loop over all hits
789 AliDebug(1,Form("Got %d tracks", (Int_t) ntracks));
791 for(Int_t track=0;track<ntracks;track++) {
794 if (fTrackHits && fHitType&4) {
795 TBranch * br1 = fLoader->TreeH()->GetBranch("fVolumes");
796 TBranch * br2 = fLoader->TreeH()->GetBranch("fNVolumes");
797 br1->GetEvent(track);
798 br2->GetEvent(track);
799 Int_t *volumes = fTrackHits->GetVolumes();
800 for (Int_t j=0;j<fTrackHits->GetNVolumes(); j++) {
801 if (volumes[j]>-1 && volumes[j]<fTPCParam->GetNSector()) {
802 fActiveSectors[volumes[j]]=kTRUE;
805 AliError(Form("Volume %d -> sector number %d is outside (0..%d)",
808 fTPCParam->GetNSector()));
814 // if (fTrackHitsOld && fHitType&2) {
815 // TBranch * br = fLoader->TreeH()->GetBranch("fTrackHitsInfo");
816 // br->GetEvent(track);
817 // AliObjectArray * ar = fTrackHitsOld->fTrackHitsInfo;
818 // for (UInt_t j=0;j<ar->GetSize();j++){
819 // fActiveSectors[((AliTrackHitsInfo*)ar->At(j))->fVolumeID] =kTRUE;
828 //_____________________________________________________________________________
829 void AliTPC::Digits2Raw()
831 // convert digits of the current event to raw data
833 static const Int_t kThreshold = 0;
835 fLoader->LoadDigits();
836 TTree* digits = fLoader->TreeD();
838 AliError("No digits tree");
844 AliSimDigits* digrow = &digarr;
845 digits->GetBranch("Segment")->SetAddress(&digrow);
847 const char* fileName = "AliTPCDDL.dat";
848 AliTPCBuffer* buffer = new AliTPCBuffer(fileName);
852 // 2: txt files with digits
853 //BE CAREFUL, verbose level 2 MUST be used only for debugging and
854 //it is highly suggested to use this mode only for debugging digits files
855 //reasonably small, because otherwise the size of the txt files can reach
856 //quickly several MB wasting time and disk space.
857 buffer->SetVerbose(0);
859 Int_t nEntries = Int_t(digits->GetEntries());
860 Int_t previousSector = -1;
862 for (Int_t i = 0; i < nEntries; i++) {
865 fTPCParam->AdjustSectorRow(digarr.GetID(), sector, row);
866 if(previousSector != sector) {
868 previousSector = sector;
871 if (sector < 36) { //inner sector [0;35]
873 //the whole row is written into the output file
874 buffer->WriteRowBinary(kThreshold, digrow, 0, 0, 0,
875 sector, subSector, row);
877 //only the pads in the range [37;48] are written into the output file
878 buffer->WriteRowBinary(kThreshold, digrow, 37, 48, 1,
879 sector, subSector, row);
881 //only the pads outside the range [37;48] are written into the output file
882 buffer->WriteRowBinary(kThreshold, digrow, 37, 48, 2,
883 sector, subSector, row);
886 } else { //outer sector [36;71]
887 if (row == 54) subSector = 2;
888 if ((row != 27) && (row != 76)) {
889 buffer->WriteRowBinary(kThreshold, digrow, 0, 0, 0,
890 sector, subSector, row);
891 } else if (row == 27) {
892 //only the pads outside the range [43;46] are written into the output file
893 buffer->WriteRowBinary(kThreshold, digrow, 43, 46, 2,
894 sector, subSector, row);
896 //only the pads in the range [43;46] are written into the output file
897 buffer->WriteRowBinary(kThreshold, digrow, 43, 46, 1,
898 sector, subSector, row);
899 } else if (row == 76) {
900 //only the pads outside the range [33;88] are written into the output file
901 buffer->WriteRowBinary(kThreshold, digrow, 33, 88, 2,
902 sector, subSector, row);
904 //only the pads in the range [33;88] are written into the output file
905 buffer->WriteRowBinary(kThreshold, digrow, 33, 88, 1,
906 sector, subSector, row);
912 fLoader->UnloadDigits();
914 AliTPCDDLRawData rawWriter;
915 rawWriter.SetVerbose(0);
917 rawWriter.RawData(fileName);
918 gSystem->Unlink(fileName);
923 //_____________________________________________________________________________
924 Bool_t AliTPC::Raw2SDigits(AliRawReader* rawReader){
925 // Converts the TPC raw data into summable digits
926 // The method is used for merging simulated and
928 if (fLoader->TreeS() == 0x0 ) {
929 fLoader->MakeTree("S");
932 if(fDefaults == 0) SetDefaults(); // check if the parameters are set
934 //setup TPCDigitsArray
935 if(GetDigitsArray()) delete GetDigitsArray();
937 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
938 arr->SetClass("AliSimDigits");
939 arr->Setup(fTPCParam);
940 arr->MakeTree(fLoader->TreeS());
944 // set zero suppression to "0"
945 fTPCParam->SetZeroSup(0);
948 const Int_t kmaxTime = fTPCParam->GetMaxTBin();
949 const Int_t kNIS = fTPCParam->GetNInnerSector();
950 const Int_t kNOS = fTPCParam->GetNOuterSector();
951 const Int_t kNS = kNIS + kNOS;
954 AliTPCROC * roc = AliTPCROC::Instance();
955 Int_t nRowsMax = roc->GetNRows(roc->GetNSector()-1);
956 Int_t nPadsMax = roc->GetNPads(roc->GetNSector()-1,nRowsMax-1);
957 Short_t** allBins = new Short_t*[nRowsMax];
958 for (Int_t iRow = 0; iRow < nRowsMax; iRow++) {
959 Int_t maxBin = kmaxTime*nPadsMax;
960 allBins[iRow] = new Short_t[maxBin];
961 memset(allBins[iRow],0,sizeof(Short_t)*maxBin);
964 for(Int_t iSector = 0; iSector < kNS; iSector++) {
966 Int_t nRows = fTPCParam->GetNRow(iSector);
967 Int_t nDDLs = 0, indexDDL = 0;
968 if (iSector < kNIS) {
970 indexDDL = iSector * 2;
974 indexDDL = (iSector-kNIS) * 4 + kNIS * 2;
977 // Load the raw data for corresponding DDLs
980 AliTPCAltroMapping** mapping =AliTPCcalibDB::Instance()->GetMapping();
981 AliTPCRawStreamV3 input(rawReader,(AliAltroMapping**)mapping);
982 rawReader->Select("TPC",indexDDL,indexDDL+nDDLs-1);
985 for (Int_t iRow = 0; iRow < nRowsMax; iRow++) {
986 Int_t maxBin = kmaxTime*nPadsMax;
987 memset(allBins[iRow],0,sizeof(Short_t)*maxBin);
990 // Begin loop over altro data
991 while (input.NextDDL()) {
993 if (input.GetSector() != iSector)
994 AliFatal(Form("Sector index mismatch ! Expected (%d), but got (%d) !",iSector,input.GetSector()));
997 while ( input.NextChannel() ) {
999 Int_t iRow = input.GetRow();
1000 if (iRow < 0 || iRow >= nRows)
1001 AliFatal(Form("Pad-row index (%d) outside the range (%d -> %d) !",
1002 iRow, 0, nRows -1));
1003 Int_t iPad = input.GetPad();
1005 Int_t maxPad = fTPCParam->GetNPads(iSector,iRow);
1007 if (iPad < 0 || iPad >= maxPad)
1008 AliFatal(Form("Pad index (%d) outside the range (%d -> %d) !",
1009 iPad, 0, maxPad -1));
1012 while ( input.NextBunch() ){
1013 Int_t startTbin = (Int_t)input.GetStartTimeBin();
1014 Int_t bunchlength = (Int_t)input.GetBunchLength();
1015 const UShort_t *sig = input.GetSignals();
1016 for (Int_t iTime = 0; iTime<bunchlength; iTime++){
1017 Int_t iTimeBin=startTbin-iTime;
1018 if ( iTimeBin < 0 || iTimeBin >= kmaxTime) {
1020 //AliFatal(Form("Timebin index (%d) outside the range (%d -> %d) !",
1021 // iTimeBin, 0, kmaxTime -1));
1024 Int_t maxBin = kmaxTime*maxPad;
1025 if (((iPad*kmaxTime+iTimeBin) >= maxBin) ||
1026 ((iPad*kmaxTime+iTimeBin) < 0))
1027 AliFatal(Form("Index outside the allowed range"
1028 " Sector=%d Row=%d Pad=%d Timebin=%d"
1029 " (Max.index=%d)",iSector,iRow,iPad,iTimeBin,maxBin));
1030 allBins[iRow][iPad*kmaxTime+iTimeBin] = sig[iTime];
1033 } // End loop over altro data
1036 // Now fill the digits array
1037 if (fDigitsArray->GetTree()==0) {
1038 AliFatal("Tree not set in fDigitsArray");
1041 for (Int_t iRow = 0; iRow < nRows; iRow++) {
1042 AliDigits * dig = fDigitsArray->CreateRow(iSector,iRow);
1043 Int_t maxPad = fTPCParam->GetNPads(iSector,iRow);
1044 for(Int_t iPad = 0; iPad < maxPad; iPad++) {
1045 for(Int_t iTimeBin = 0; iTimeBin < kmaxTime; iTimeBin++) {
1046 Short_t q = allBins[iRow][iPad*kmaxTime + iTimeBin];
1047 if (q <= 0) continue;
1049 dig->SetDigitFast((Short_t)q,iTimeBin,iPad);
1052 fDigitsArray->StoreRow(iSector,iRow);
1053 Int_t ndig = dig->GetDigitSize();
1056 Form("*** Sector, row, compressed digits %d %d %d ***\n",
1057 iSector,iRow,ndig));
1059 fDigitsArray->ClearRow(iSector,iRow);
1061 } // end of the sector digitization
1063 // get LHC clock phase from the digits tree
1065 TParameter<float> *ph;
1067 TTree *digtree = fLoader->TreeD();
1069 if(digtree){ // if TreeD exists
1070 ph = (TParameter<float>*)digtree->GetUserInfo()->FindObject("lhcphase0");
1071 phase = ph->GetVal();
1073 else{ //TreeD does not exist
1077 // store lhc clock phase in S-digits tree
1079 fLoader->TreeS()->GetUserInfo()->Add(new TParameter<float>("lhcphase0",phase));
1081 fLoader->WriteSDigits("OVERWRITE");
1083 if(GetDigitsArray()) delete GetDigitsArray();
1084 SetDigitsArray(0x0);
1087 for (Int_t iRow = 0; iRow < nRowsMax; iRow++)
1088 delete [] allBins[iRow];
1094 //______________________________________________________________________
1095 AliDigitizer* AliTPC::CreateDigitizer(AliRunDigitizer* manager) const
1097 return new AliTPCDigitizer(manager);
1100 void AliTPC::SDigits2Digits2(Int_t /*eventnumber*/)
1102 //create digits from summable digits
1103 GenerNoise(500000); //create teble with noise
1105 //conect tree with sSDigits
1106 TTree *t = fLoader->TreeS();
1109 fLoader->LoadSDigits("READ");
1110 t = fLoader->TreeS();
1112 AliError("Can not get input TreeS");
1117 if (fLoader->TreeD() == 0x0) fLoader->MakeTree("D");
1119 AliSimDigits digarr, *dummy=&digarr;
1120 TBranch* sdb = t->GetBranch("Segment");
1122 AliError("Can not find branch with segments in TreeS.");
1126 sdb->SetAddress(&dummy);
1128 Stat_t nentries = t->GetEntries();
1130 // set zero suppression
1132 fTPCParam->SetZeroSup(2);
1134 // get zero suppression
1136 Int_t zerosup = fTPCParam->GetZeroSup();
1138 //make tree with digits
1140 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1141 arr->SetClass("AliSimDigits");
1142 arr->Setup(fTPCParam);
1143 arr->MakeTree(fLoader->TreeD());
1145 AliTPCParam * par = fTPCParam;
1147 //Loop over segments of the TPC
1149 for (Int_t n=0; n<nentries; n++) {
1152 if (!par->AdjustSectorRow(digarr.GetID(),sec,row)) {
1153 AliWarning(Form("Invalid segment ID ! %d",digarr.GetID()));
1156 if (!IsSectorActive(sec)) continue;
1158 AliSimDigits * digrow =(AliSimDigits*) arr->CreateRow(sec,row);
1159 Int_t nrows = digrow->GetNRows();
1160 Int_t ncols = digrow->GetNCols();
1162 digrow->ExpandBuffer();
1163 digarr.ExpandBuffer();
1164 digrow->ExpandTrackBuffer();
1165 digarr.ExpandTrackBuffer();
1168 Short_t * pamp0 = digarr.GetDigits();
1169 Int_t * ptracks0 = digarr.GetTracks();
1170 Short_t * pamp1 = digrow->GetDigits();
1171 Int_t * ptracks1 = digrow->GetTracks();
1172 Int_t nelems =nrows*ncols;
1173 Int_t saturation = fTPCParam->GetADCSat() - 1;
1174 //use internal structure of the AliDigits - for speed reason
1175 //if you cahnge implementation
1176 //of the Alidigits - it must be rewriten -
1177 for (Int_t i= 0; i<nelems; i++){
1178 Float_t q = TMath::Nint(Float_t(*pamp0)/16.+GetNoise());
1180 if (q>saturation) q=saturation;
1183 ptracks1[0]=ptracks0[0];
1184 ptracks1[nelems]=ptracks0[nelems];
1185 ptracks1[2*nelems]=ptracks0[2*nelems];
1193 arr->StoreRow(sec,row);
1194 arr->ClearRow(sec,row);
1199 fLoader->WriteDigits("OVERWRITE");
1203 //__________________________________________________________________
1204 void AliTPC::SetDefaults(){
1206 // setting the defaults
1209 // Set response functions
1212 AliRunLoader* rl = (AliRunLoader*)fLoader->GetEventFolder()->FindObject(AliRunLoader::GetRunLoaderName());
1214 //AliTPCParamSR *param=(AliTPCParamSR*)gDirectory->Get("75x40_100x60");
1215 //gDirectory->Get("75x40_100x60");
1216 AliTPCParamSR *param = (AliTPCParamSR*)AliTPCcalibDB::Instance()->GetParameters();
1218 AliFatal("No TPC parameters found");
1221 if (!param->IsGeoRead()){
1223 // read transformation matrices for gGeoManager
1225 param->ReadGeoMatrices();
1230 AliTPCPRF2D * prfinner = new AliTPCPRF2D;
1231 AliTPCPRF2D * prfouter1 = new AliTPCPRF2D;
1232 AliTPCPRF2D * prfouter2 = new AliTPCPRF2D;
1235 //AliTPCRF1D * rf = new AliTPCRF1D(kTRUE);
1236 //rf->SetGauss(param->GetZSigma(),param->GetZWidth(),1.);
1237 //rf->SetOffset(3*param->GetZSigma());
1242 char strgamma4[1000];
1243 //sprintf(strgamma4,"AliTPCRF1D::Gamma4((x-0.135+%f)*%f,55,160)",3*param->GetZSigma(), 1000000000*param->GetTSample()/param->GetZWidth());
1245 snprintf(strgamma4,1000,"AliTPCRF1D::Gamma4((x-0.135+%f)*%f,55,160)",3*param->GetZSigma(), 1000000000*param->GetTSample()/param->GetZWidth());
1246 TF1 * fgamma4 = new TF1("fgamma4",strgamma4, -1,1);
1247 AliTPCRF1D * rf = new AliTPCRF1D(kTRUE,1000);
1248 rf->SetParam(fgamma4,param->GetZWidth(), 1,0.2);
1249 rf->SetOffset(3*param->GetZSigma());
1252 TDirectory *savedir=gDirectory;
1253 TFile *f=TFile::Open("$ALICE_ROOT/TPC/AliTPCprf2d.root");
1255 AliFatal("Can't open $ALICE_ROOT/TPC/AliTPCprf2d.root !");
1258 prfinner->Read("prf_07504_Gati_056068_d02");
1259 //PH Set different names
1260 s=prfinner->GetGRF()->GetName();
1262 prfinner->GetGRF()->SetName(s.Data());
1264 prfouter1->Read("prf_10006_Gati_047051_d03");
1265 s=prfouter1->GetGRF()->GetName();
1267 prfouter1->GetGRF()->SetName(s.Data());
1269 prfouter2->Read("prf_15006_Gati_047051_d03");
1270 s=prfouter2->GetGRF()->GetName();
1272 prfouter2->GetGRF()->SetName(s.Data());
1277 param->SetInnerPRF(prfinner);
1278 param->SetOuter1PRF(prfouter1);
1279 param->SetOuter2PRF(prfouter2);
1280 param->SetTimeRF(rf);
1290 //__________________________________________________________________
1291 void AliTPC::Hits2Digits()
1294 // creates digits from hits
1296 if (!fTPCParam->IsGeoRead()){
1298 // read transformation matrices for gGeoManager
1300 fTPCParam->ReadGeoMatrices();
1303 fLoader->LoadHits("read");
1304 fLoader->LoadDigits("recreate");
1305 AliRunLoader* runLoader = fLoader->GetRunLoader();
1307 for (Int_t iEvent = 0; iEvent < runLoader->GetNumberOfEvents(); iEvent++) {
1308 //PH runLoader->GetEvent(iEvent);
1309 Hits2Digits(iEvent);
1312 fLoader->UnloadHits();
1313 fLoader->UnloadDigits();
1315 //__________________________________________________________________
1316 void AliTPC::Hits2Digits(Int_t eventnumber)
1318 //----------------------------------------------------
1319 // Loop over all sectors for a single event
1320 //----------------------------------------------------
1321 AliRunLoader* rl = (AliRunLoader*)fLoader->GetEventFolder()->FindObject(AliRunLoader::GetRunLoaderName());
1322 rl->GetEvent(eventnumber);
1324 if (fLoader->TreeH() == 0x0) {
1325 if(fLoader->LoadHits()) {
1326 AliError("Can not load hits.");
1331 if (fLoader->TreeD() == 0x0 ) {
1332 fLoader->MakeTree("D");
1333 if (fLoader->TreeD() == 0x0 ) {
1334 AliError("Can not get TreeD");
1339 if(fDefaults == 0) SetDefaults(); // check if the parameters are set
1340 GenerNoise(500000); //create teble with noise
1342 //setup TPCDigitsArray
1344 if(GetDigitsArray()) delete GetDigitsArray();
1346 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1347 arr->SetClass("AliSimDigits");
1348 arr->Setup(fTPCParam);
1350 arr->MakeTree(fLoader->TreeD());
1351 SetDigitsArray(arr);
1353 fDigitsSwitch=0; // standard digits
1354 // here LHC clock phase
1356 switch (fLHCclockPhaseSw){
1363 lhcph = (Int_t)(gRandom->Rndm()/0.25);
1367 // not implemented yet
1370 // adding phase to the TreeD user info
1371 fLoader->TreeD()->GetUserInfo()->Add(new TParameter<float>("lhcphase0",lhcph));
1373 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++)
1374 if (IsSectorActive(isec)) {
1375 AliDebug(1,Form("Hits2Digits: Sector %d is active.",isec));
1376 Hits2DigitsSector(isec);
1379 AliDebug(1,Form("Hits2Digits: Sector %d is NOT active.",isec));
1382 fLoader->WriteDigits("OVERWRITE");
1384 //this line prevents the crash in the similar one
1385 //on the beginning of this method
1386 //destructor attempts to reset the tree, which is deleted by the loader
1387 //need to be redesign
1388 if(GetDigitsArray()) delete GetDigitsArray();
1389 SetDigitsArray(0x0);
1393 //__________________________________________________________________
1394 void AliTPC::Hits2SDigits2(Int_t eventnumber)
1397 //-----------------------------------------------------------
1398 // summable digits - 16 bit "ADC", no noise, no saturation
1399 //-----------------------------------------------------------
1401 //----------------------------------------------------
1402 // Loop over all sectors for a single event
1403 //----------------------------------------------------
1405 AliRunLoader* rl = fLoader->GetRunLoader();
1407 rl->GetEvent(eventnumber);
1408 if (fLoader->TreeH() == 0x0) {
1409 if(fLoader->LoadHits()) {
1410 AliError("Can not load hits.");
1417 if (fLoader->TreeS() == 0x0 ) {
1418 fLoader->MakeTree("S");
1421 if(fDefaults == 0) SetDefaults();
1423 GenerNoise(500000); //create table with noise
1424 //setup TPCDigitsArray
1426 if(GetDigitsArray()) delete GetDigitsArray();
1429 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1430 arr->SetClass("AliSimDigits");
1431 arr->Setup(fTPCParam);
1432 arr->MakeTree(fLoader->TreeS());
1434 SetDigitsArray(arr);
1436 fDigitsSwitch=1; // summable digits
1438 // set zero suppression to "0"
1439 // here LHC clock phase
1441 switch (fLHCclockPhaseSw){
1448 lhcph = (Int_t)(gRandom->Rndm()/0.25);
1452 // not implemented yet
1455 // adding phase to the TreeS user info
1457 fLoader->TreeS()->GetUserInfo()->Add(new TParameter<float>("lhcphase0",lhcph));
1459 fTPCParam->SetZeroSup(0);
1461 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++)
1462 if (IsSectorActive(isec)) {
1463 Hits2DigitsSector(isec);
1466 fLoader->WriteSDigits("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);
1475 //__________________________________________________________________
1477 void AliTPC::Hits2SDigits()
1480 //-----------------------------------------------------------
1481 // summable digits - 16 bit "ADC", no noise, no saturation
1482 //-----------------------------------------------------------
1484 if (!fTPCParam->IsGeoRead()){
1486 // read transformation matrices for gGeoManager
1488 fTPCParam->ReadGeoMatrices();
1491 fLoader->LoadHits("read");
1492 fLoader->LoadSDigits("recreate");
1493 AliRunLoader* runLoader = fLoader->GetRunLoader();
1495 for (Int_t iEvent = 0; iEvent < runLoader->GetNumberOfEvents(); iEvent++) {
1496 runLoader->GetEvent(iEvent);
1499 Hits2SDigits2(iEvent);
1502 fLoader->UnloadHits();
1503 fLoader->UnloadSDigits();
1504 if (fDebugStreamer) {
1505 delete fDebugStreamer;
1509 //_____________________________________________________________________________
1511 void AliTPC::Hits2DigitsSector(Int_t isec)
1513 //-------------------------------------------------------------------
1514 // TPC conversion from hits to digits.
1515 //-------------------------------------------------------------------
1517 //-----------------------------------------------------------------
1518 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1519 //-----------------------------------------------------------------
1521 //-------------------------------------------------------
1522 // Get the access to the track hits
1523 //-------------------------------------------------------
1525 // check if the parameters are set - important if one calls this method
1526 // directly, not from the Hits2Digits
1528 if(fDefaults == 0) SetDefaults();
1530 TTree *tH = fLoader->TreeH(); // pointer to the hits tree
1532 AliFatal("Can not find TreeH in folder");
1536 Stat_t ntracks = tH->GetEntries();
1538 Int_t nrows =fTPCParam->GetNRow(isec);
1540 TObjArray **row=new TObjArray* [nrows+2]; // 2 extra rows for cross talk
1541 for(Int_t j=0;j<nrows+2;j++) row[j]=0;
1543 MakeSector(isec,nrows,tH,ntracks,row);
1545 //--------------------------------------------------------
1546 // Digitize this sector, row by row
1547 // row[i] is the pointer to the TObjArray of TVectors,
1548 // each one containing electrons accepted on this
1549 // row, assigned into tracks
1550 //--------------------------------------------------------
1554 if (fDigitsArray->GetTree()==0) {
1555 AliFatal("Tree not set in fDigitsArray");
1558 for (i=0;i<nrows;i++){
1560 AliDigits * dig = fDigitsArray->CreateRow(isec,i);
1562 DigitizeRow(i,isec,row);
1564 fDigitsArray->StoreRow(isec,i);
1566 Int_t ndig = dig->GetDigitSize();
1569 Form("*** Sector, row, compressed digits %d %d %d ***\n",
1572 fDigitsArray->ClearRow(isec,i);
1575 } // end of the sector digitization
1577 for(i=0;i<nrows+2;i++){
1582 delete [] row; // delete the array of pointers to TObjArray-s
1585 } // end of Hits2DigitsSector
1588 //_____________________________________________________________________________
1589 void AliTPC::DigitizeRow(Int_t irow,Int_t isec,TObjArray **rows)
1591 //-----------------------------------------------------------
1592 // Single row digitization, coupling from the neighbouring
1593 // rows taken into account
1594 //-----------------------------------------------------------
1596 //-----------------------------------------------------------------
1597 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1598 // Modified: Marian Ivanov GSI Darmstadt, m.ivanov@gsi.de
1599 //-----------------------------------------------------------------
1601 Float_t zerosup = fTPCParam->GetZeroSup();
1602 AliTPCCalPad * gainTPC = AliTPCcalibDB::Instance()->GetDedxGainFactor();
1603 AliTPCCalPad * noiseTPC = AliTPCcalibDB::Instance()->GetPadNoise();
1604 AliTPCCalROC * gainROC = gainTPC->GetCalROC(isec); // pad gains per given sector
1605 AliTPCCalROC * noiseROC = noiseTPC->GetCalROC(isec); // noise per given sector
1608 fCurrentIndex[1]= isec;
1611 Int_t nofPads = fTPCParam->GetNPads(isec,irow);
1612 Int_t nofTbins = fTPCParam->GetMaxTBin();
1613 Int_t indexRange[4];
1615 // Integrated signal for this row
1616 // and a single track signal
1619 TMatrixF *m1 = new TMatrixF(0,nofPads,0,nofTbins); // integrated
1620 TMatrixF *m2 = new TMatrixF(0,nofPads,0,nofTbins); // single
1622 TMatrixF &total = *m1;
1624 // Array of pointers to the label-signal list
1626 Int_t nofDigits = nofPads*nofTbins; // number of digits for this row
1627 Float_t **pList = new Float_t* [nofDigits];
1631 for(lp=0;lp<nofDigits;lp++)pList[lp]=0; // set all pointers to NULL
1637 for (Int_t row= row1;row<=row2;row++){
1638 Int_t nTracks= rows[row]->GetEntries();
1639 for (i1=0;i1<nTracks;i1++){
1640 fCurrentIndex[2]= row;
1641 fCurrentIndex[3]=irow+1;
1643 m2->Zero(); // clear single track signal matrix
1644 Float_t trackLabel = GetSignal(rows[row],i1,m2,m1,indexRange);
1645 GetList(trackLabel,nofPads,m2,indexRange,pList);
1647 else GetSignal(rows[row],i1,0,m1,indexRange);
1653 AliDigits *dig = fDigitsArray->GetRow(isec,irow);
1655 Float_t fzerosup = zerosup+0.5;
1656 for(Int_t it=0;it<nofTbins;it++){
1657 for(Int_t ip=0;ip<nofPads;ip++){
1659 Float_t q=total(ip,it);
1660 if(fDigitsSwitch == 0){
1661 Float_t gain = gainROC->GetValue(irow,ip); // get gain for given - pad-row pad
1662 Float_t noisePad = noiseROC->GetValue(irow,ip);
1665 q+=GetNoise()*noisePad;
1666 if(q <=fzerosup) continue; // do not fill zeros
1668 if(q >= fTPCParam->GetADCSat()) q = fTPCParam->GetADCSat() - 1; // saturation
1673 if(q <= 0.) continue; // do not fill zeros
1674 if(q>2000.) q=2000.;
1680 // "real" signal or electronic noise (list = -1)?
1683 for(Int_t j1=0;j1<3;j1++){
1684 tracks[j1] = (pList[gi]) ?(Int_t)(*(pList[gi]+j1)) : -2;
1689 <A NAME="AliDigits"></A>
1690 using of AliDigits object
1693 dig->SetDigitFast((Short_t)q,it,ip);
1694 if (fDigitsArray->IsSimulated()) {
1695 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[0],it,ip,0);
1696 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[1],it,ip,1);
1697 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[2],it,ip,2);
1700 } // end of loop over time buckets
1701 } // end of lop over pads
1707 // glitch filters if normal simulated digits
1709 if(!fDigitsSwitch) ((AliSimDigits*)dig)->GlitchFilter();
1711 // This row has been digitized, delete nonused stuff
1714 for(lp=0;lp<nofDigits;lp++){
1715 if(pList[lp]) delete [] pList[lp];
1723 } // end of DigitizeRow
1725 //_____________________________________________________________________________
1727 Float_t AliTPC::GetSignal(TObjArray *p1, Int_t ntr,
1728 TMatrixF *m1, TMatrixF *m2,Int_t *indexRange)
1731 //---------------------------------------------------------------
1732 // Calculates 2-D signal (pad,time) for a single track,
1733 // returns a pointer to the signal matrix and the track label
1734 // No digitization is performed at this level!!!
1735 //---------------------------------------------------------------
1737 //-----------------------------------------------------------------
1738 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1739 // Modified: Marian Ivanov
1740 //-----------------------------------------------------------------
1744 tv = (TVector*)p1->At(ntr); // pointer to a track
1747 Float_t label = v(0);
1748 Int_t centralPad = (fTPCParam->GetNPads(fCurrentIndex[1],fCurrentIndex[3]-1))/2;
1750 Int_t nElectrons = (tv->GetNrows()-1)/5;
1751 indexRange[0]=9999; // min pad
1752 indexRange[1]=-1; // max pad
1753 indexRange[2]=9999; //min time
1754 indexRange[3]=-1; // max time
1756 TMatrixF &signal = *m1;
1757 TMatrixF &total = *m2;
1759 // Get LHC clock phase
1761 TParameter<float> *ph;
1762 if(fDigitsSwitch){// s-digits
1763 ph = (TParameter<float>*)fLoader->TreeS()->GetUserInfo()->FindObject("lhcphase0");
1765 else{ // normal digits
1766 ph = (TParameter<float>*)fLoader->TreeD()->GetUserInfo()->FindObject("lhcphase0");
1768 // Loop over all electrons
1770 for(Int_t nel=0; nel<nElectrons; nel++){
1772 Float_t aval = v(idx+4);
1773 Float_t eltoadcfac=aval*fTPCParam->GetTotalNormFac();
1774 Float_t xyz[4]={v(idx+1),v(idx+2),v(idx+3),v(idx+5)};
1775 Int_t n = ((AliTPCParamSR*)fTPCParam)->CalcResponseFast(xyz,fCurrentIndex,
1776 fCurrentIndex[3],ph->GetVal());
1778 Int_t *index = fTPCParam->GetResBin(0);
1779 Float_t *weight = & (fTPCParam->GetResWeight(0));
1781 if (n>0) for (Int_t i =0; i<n; i++){
1782 Int_t pad=index[1]+centralPad; //in digit coordinates central pad has coordinate 0
1785 Int_t time=index[2];
1786 Float_t qweight = *(weight)*eltoadcfac;
1788 if (m1!=0) signal(pad,time)+=qweight;
1789 total(pad,time)+=qweight;
1790 if (indexRange[0]>pad) indexRange[0]=pad;
1791 if (indexRange[1]<pad) indexRange[1]=pad;
1792 if (indexRange[2]>time) indexRange[2]=time;
1793 if (indexRange[3]<time) indexRange[3]=time;
1800 } // end of loop over electrons
1802 return label; // returns track label when finished
1805 //_____________________________________________________________________________
1806 void AliTPC::GetList(Float_t label,Int_t np,TMatrixF *m,
1807 Int_t *indexRange, Float_t **pList)
1809 //----------------------------------------------------------------------
1810 // Updates the list of tracks contributing to digits for a given row
1811 //----------------------------------------------------------------------
1813 //-----------------------------------------------------------------
1814 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1815 //-----------------------------------------------------------------
1817 TMatrixF &signal = *m;
1819 // lop over nonzero digits
1821 for(Int_t it=indexRange[2];it<indexRange[3]+1;it++){
1822 for(Int_t ip=indexRange[0];ip<indexRange[1]+1;ip++){
1825 // accept only the contribution larger than 500 electrons (1/2 s_noise)
1827 if(signal(ip,it)<0.5) continue;
1829 Int_t globalIndex = it*np+ip; // globalIndex starts from 0!
1831 if(!pList[globalIndex]){
1834 // Create new list (6 elements - 3 signals and 3 labels),
1837 pList[globalIndex] = new Float_t [6];
1841 *pList[globalIndex] = -1.;
1842 *(pList[globalIndex]+1) = -1.;
1843 *(pList[globalIndex]+2) = -1.;
1844 *(pList[globalIndex]+3) = -1.;
1845 *(pList[globalIndex]+4) = -1.;
1846 *(pList[globalIndex]+5) = -1.;
1848 *pList[globalIndex] = label;
1849 *(pList[globalIndex]+3) = signal(ip,it);
1853 // check the signal magnitude
1855 Float_t highest = *(pList[globalIndex]+3);
1856 Float_t middle = *(pList[globalIndex]+4);
1857 Float_t lowest = *(pList[globalIndex]+5);
1860 // compare the new signal with already existing list
1863 if(signal(ip,it)<lowest) continue; // neglect this track
1867 if (signal(ip,it)>highest){
1868 *(pList[globalIndex]+5) = middle;
1869 *(pList[globalIndex]+4) = highest;
1870 *(pList[globalIndex]+3) = signal(ip,it);
1872 *(pList[globalIndex]+2) = *(pList[globalIndex]+1);
1873 *(pList[globalIndex]+1) = *pList[globalIndex];
1874 *pList[globalIndex] = label;
1876 else if (signal(ip,it)>middle){
1877 *(pList[globalIndex]+5) = middle;
1878 *(pList[globalIndex]+4) = signal(ip,it);
1880 *(pList[globalIndex]+2) = *(pList[globalIndex]+1);
1881 *(pList[globalIndex]+1) = label;
1884 *(pList[globalIndex]+5) = signal(ip,it);
1885 *(pList[globalIndex]+2) = label;
1889 } // end of loop over pads
1890 } // end of loop over time bins
1893 //___________________________________________________________________
1894 void AliTPC::MakeSector(Int_t isec,Int_t nrows,TTree *TH,
1895 Stat_t ntracks,TObjArray **row)
1898 //-----------------------------------------------------------------
1899 // Prepares the sector digitization, creates the vectors of
1900 // tracks for each row of this sector. The track vector
1901 // contains the track label and the position of electrons.
1902 //-----------------------------------------------------------------
1905 // The trasport of the electrons through TPC drift volume
1906 // Drift (drift velocity + velocity map(not yet implemented)))
1907 // Application of the random processes (diffusion, gas gain)
1908 // Systematic effects (ExB effect in drift volume + ROCs)
1911 // Loop over primary electrons:
1912 // Creation of the secondary electrons
1913 // Loop over electrons (primary+ secondaries)
1914 // Global coordinate frame:
1915 // 1. Skip electrons if attached
1916 // 2. ExB effect in drift volume
1917 // a.) Simulation calib->GetExB()->CorrectInverse(dxyz0,dxyz1);
1918 // b.) Reconstruction - calib->GetExB()->CorrectInverse(dxyz0,dxyz1);
1919 // 3. Generation of gas gain (Random - Exponential distribution)
1920 // 4. TransportElectron function (diffusion)
1922 // 5. Conversion to the local coordinate frame pad-row, pad, timebin
1923 // 6. Apply Time0 shift - AliTPCCalPad class
1924 // a.) Plus sign in simulation
1925 // b.) Minus sign in reconstruction
1928 //-----------------------------------------------------------------
1929 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1930 // Origin: Marian Ivanov, marian.ivanov@cern.ch
1931 //-----------------------------------------------------------------
1932 AliTPCcalibDB* const calib=AliTPCcalibDB::Instance();
1933 if (gAlice){ // Set correctly the magnetic field in the ExB calculation
1934 if (!calib->GetExB()){
1935 AliMagF * field = ((AliMagF*)TGeoGlobalMagField::Instance()->GetField());
1937 calib->SetExBField(field);
1942 Float_t gasgain = fTPCParam->GetGasGain();
1943 gasgain = gasgain/fGainFactor;
1947 AliTPChit *tpcHit; // pointer to a sigle TPC hit
1950 if (fHitType>1) branch = TH->GetBranch("TPC2");
1951 else branch = TH->GetBranch("TPC");
1954 //----------------------------------------------
1955 // Create TObjArray-s, one for each row,
1956 // each TObjArray will store the TVectors
1957 // of electrons, one TVectors per each track.
1958 //----------------------------------------------
1960 Int_t *nofElectrons = new Int_t [nrows+2]; // electron counter for each row
1961 TVector **tracks = new TVector* [nrows+2]; //pointers to the track vectors
1963 for(i=0; i<nrows+2; i++){
1964 row[i] = new TObjArray;
1971 //--------------------------------------------------------------------
1972 // Loop over tracks, the "track" contains the full history
1973 //--------------------------------------------------------------------
1975 Int_t previousTrack,currentTrack;
1976 previousTrack = -1; // nothing to store so far!
1978 for(Int_t track=0;track<ntracks;track++){
1979 Bool_t isInSector=kTRUE;
1981 isInSector = TrackInVolume(isec,track);
1982 if (!isInSector) continue;
1984 branch->GetEntry(track); // get next track
1988 tpcHit = (AliTPChit*)FirstHit(-1);
1990 //--------------------------------------------------------------
1992 //--------------------------------------------------------------
1997 Int_t sector=tpcHit->fSector; // sector number
1999 tpcHit = (AliTPChit*) NextHit();
2003 // Remove hits which arrive before the TPC opening gate signal
2004 if(((fTPCParam->GetZLength(isec)-TMath::Abs(tpcHit->Z()))
2005 /fTPCParam->GetDriftV()+tpcHit->Time())<fTPCParam->GetGateDelay()) {
2006 tpcHit = (AliTPChit*) NextHit();
2010 currentTrack = tpcHit->Track(); // track number
2012 if(currentTrack != previousTrack){
2014 // store already filled fTrack
2016 for(i=0;i<nrows+2;i++){
2017 if(previousTrack != -1){
2018 if(nofElectrons[i]>0){
2019 TVector &v = *tracks[i];
2020 v(0) = previousTrack;
2021 tracks[i]->ResizeTo(5*nofElectrons[i]+1); // shrink if necessary
2022 row[i]->Add(tracks[i]);
2025 delete tracks[i]; // delete empty TVector
2031 tracks[i] = new TVector(601); // TVectors for the next fTrack
2033 } // end of loop over rows
2035 previousTrack=currentTrack; // update track label
2038 Int_t qI = (Int_t) (tpcHit->fQ); // energy loss (number of electrons)
2040 //---------------------------------------------------
2041 // Calculate the electron attachment probability
2042 //---------------------------------------------------
2045 Float_t time = 1.e6*(fTPCParam->GetZLength(isec)-TMath::Abs(tpcHit->Z()))
2046 /fTPCParam->GetDriftV();
2048 Float_t attProb = fTPCParam->GetAttCoef()*
2049 fTPCParam->GetOxyCont()*time; // fraction!
2051 //-----------------------------------------------
2052 // Loop over electrons
2053 //-----------------------------------------------
2056 for(Int_t nel=0;nel<qI;nel++){
2057 // skip if electron lost due to the attachment
2058 if((gRandom->Rndm(0)) < attProb) continue; // electron lost!
2063 Double_t dxyz0[3],dxyz1[3];
2064 dxyz0[0]=tpcHit->X();
2065 dxyz0[1]=tpcHit->Y();
2066 dxyz0[2]=tpcHit->Z();
2067 if (calib->GetExB()){
2068 calib->GetExB()->CorrectInverse(dxyz0,dxyz1);
2070 AliError("Not valid ExB calibration");
2071 dxyz1[0]=tpcHit->X();
2072 dxyz1[1]=tpcHit->Y();
2073 dxyz1[2]=tpcHit->Z();
2081 // protection for the nonphysical avalanche size (10**6 maximum)
2083 Double_t rn=TMath::Max(gRandom->Rndm(0),1.93e-22);
2084 xyz[3]= (Float_t) (-gasgain*TMath::Log(rn));
2087 TransportElectron(xyz,index);
2089 Int_t padrow = fTPCParam->GetPadRow(xyz,index);
2091 // Add Time0 correction due unisochronity
2092 // xyz[0] - pad row coordinate
2093 // xyz[1] - pad coordinate
2094 // xyz[2] - is in now time bin coordinate system
2095 Float_t correction =0;
2096 if (calib->GetPadTime0()){
2097 if (!calib->GetPadTime0()->GetCalROC(isec)) continue;
2098 Int_t npads = fTPCParam->GetNPads(isec,padrow);
2099 // Int_t pad = TMath::Nint(xyz[1]+fTPCParam->GetNPads(isec,TMath::Nint(xyz[0]))*0.5);
2100 // pad numbering from -npads/2 .. npads/2-1
2101 Int_t pad = TMath::Nint(xyz[1]+npads/2);
2103 if (pad>=npads) pad=npads-1;
2104 correction = calib->GetPadTime0()->GetCalROC(isec)->GetValue(padrow,pad);
2105 // printf("%d\t%d\t%d\t%f\n",isec,padrow,pad,correction);
2106 if (fDebugStreamer){
2107 (*fDebugStreamer)<<"Time0"<<
2115 "cor="<<correction<<
2120 xyz[2]+=fTPCParam->GetNTBinsL1(); // adding Level 1 time bin offset
2122 // Electron track time (for pileup simulation)
2123 xyz[2]+=tpcHit->Time()/fTPCParam->GetTSample(); // adding time of flight
2127 // row 0 - cross talk from the innermost row
2128 // row fNRow+1 cross talk from the outermost row
2129 rowNumber = index[2]+1;
2130 //transform position to local digit coordinates
2131 //relative to nearest pad row
2132 if ((rowNumber<0)||rowNumber>fTPCParam->GetNRow(isec)+1) continue;
2134 if (isec <fTPCParam->GetNInnerSector()) {
2135 x1 = xyz[1]*fTPCParam->GetInnerPadPitchWidth();
2136 y1 = fTPCParam->GetYInner(rowNumber);
2139 x1=xyz[1]*fTPCParam->GetOuterPadPitchWidth();
2140 y1 = fTPCParam->GetYOuter(rowNumber);
2142 // gain inefficiency at the wires edges - linear
2145 if(x1>y1) xyz[3]*=TMath::Max(1.e-6,(y1-x1+1.)); */
2147 nofElectrons[rowNumber]++;
2148 //----------------------------------
2149 // Expand vector if necessary
2150 //----------------------------------
2151 if(nofElectrons[rowNumber]>120){
2152 Int_t range = tracks[rowNumber]->GetNrows();
2153 if((nofElectrons[rowNumber])>(range-1)/5){
2155 tracks[rowNumber]->ResizeTo(range+500); // Add 100 electrons
2159 TVector &v = *tracks[rowNumber];
2160 Int_t idx = 5*nofElectrons[rowNumber]-4;
2161 Real_t * position = &(((TVector&)v)(idx)); //make code faster
2162 memcpy(position,xyz,5*sizeof(Float_t));
2164 } // end of loop over electrons
2166 tpcHit = (AliTPChit*)NextHit();
2168 } // end of loop over hits
2169 } // end of loop over tracks
2172 // store remaining track (the last one) if not empty
2175 for(i=0;i<nrows+2;i++){
2176 if(nofElectrons[i]>0){
2177 TVector &v = *tracks[i];
2178 v(0) = previousTrack;
2179 tracks[i]->ResizeTo(5*nofElectrons[i]+1); // shrink if necessary
2180 row[i]->Add(tracks[i]);
2189 delete [] nofElectrons;
2191 } // end of MakeSector
2194 //_____________________________________________________________________________
2198 // Initialise TPC detector after definition of geometry
2200 AliDebug(1,"*********************************************");
2203 //_____________________________________________________________________________
2204 void AliTPC::ResetDigits()
2207 // Reset number of digits and the digits array for this detector
2210 if (fDigits) fDigits->Clear();
2215 //_____________________________________________________________________________
2216 void AliTPC::SetSens(Int_t sens)
2219 //-------------------------------------------------------------
2220 // Activates/deactivates the sensitive strips at the center of
2221 // the pad row -- this is for the space-point resolution calculations
2222 //-------------------------------------------------------------
2224 //-----------------------------------------------------------------
2225 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2226 //-----------------------------------------------------------------
2232 void AliTPC::SetSide(Float_t side=0.)
2234 // choice of the TPC side
2239 //_____________________________________________________________________________
2241 void AliTPC::TransportElectron(Float_t *xyz, Int_t *index)
2244 // electron transport taking into account:
2246 // 2.ExB at the wires
2247 // 3. nonisochronity
2249 // xyz and index must be already transformed to system 1
2252 fTPCParam->Transform1to2(xyz,index); // mis-alignment applied in this step
2255 Float_t driftl=xyz[2];
2256 if(driftl<0.01) driftl=0.01;
2257 driftl=TMath::Sqrt(driftl);
2258 Float_t sigT = driftl*(fTPCParam->GetDiffT());
2259 Float_t sigL = driftl*(fTPCParam->GetDiffL());
2260 xyz[0]=gRandom->Gaus(xyz[0],sigT);
2261 xyz[1]=gRandom->Gaus(xyz[1],sigT);
2262 xyz[2]=gRandom->Gaus(xyz[2],sigL);
2266 if (fTPCParam->GetMWPCReadout()==kTRUE){
2267 Float_t dx = fTPCParam->Transform2to2NearestWire(xyz,index);
2268 xyz[1]+=dx*(fTPCParam->GetOmegaTau());
2270 //add nonisochronity (not implemented yet)
2276 //______________________________________________________________________
2277 AliTPChit::AliTPChit()
2289 //_____________________________________________________________________________
2290 AliTPChit::AliTPChit(Int_t shunt, Int_t track, Int_t *vol, Float_t *hits)
2291 :AliHit(shunt,track),
2298 // Creates a TPC hit object
2309 //________________________________________________________________________
2310 // Additional code because of the AliTPCTrackHitsV2
2312 void AliTPC::MakeBranch(Option_t *option)
2315 // Create a new branch in the current Root Tree
2316 // The branch of fHits is automatically split
2317 // MI change 14.09.2000
2319 if (fHitType<2) return;
2320 char branchname[10];
2321 //sprintf(branchname,"%s2",GetName());
2322 snprintf(branchname,10,"%s2",GetName());
2324 // Get the pointer to the header
2325 const char *cH = strstr(option,"H");
2327 if (fTrackHits && fLoader->TreeH() && cH && fHitType&4) {
2328 AliDebug(1,"Making branch for Type 4 Hits");
2329 fLoader->TreeH()->Branch(branchname,"AliTPCTrackHitsV2",&fTrackHits,fBufferSize,99);
2332 // if (fTrackHitsOld && fLoader->TreeH() && cH && fHitType&2) {
2333 // AliDebug(1,"Making branch for Type 2 Hits");
2334 // AliObjectBranch * branch = new AliObjectBranch(branchname,"AliTPCTrackHits",&fTrackHitsOld,
2335 // fLoader->TreeH(),fBufferSize,99);
2336 // fLoader->TreeH()->GetListOfBranches()->Add(branch);
2340 void AliTPC::SetTreeAddress()
2342 //Sets tree address for hits
2344 if (fHits == 0x0 ) fHits = new TClonesArray("AliTPChit", 176);//skowron 20.06.03
2345 AliDetector::SetTreeAddress();
2347 if (fHitType>1) SetTreeAddress2();
2350 void AliTPC::SetTreeAddress2()
2353 // Set branch address for the TrackHits Tree
2358 char branchname[20];
2359 //sprintf(branchname,"%s2",GetName());
2360 snprintf(branchname,20,"%s2",GetName());
2362 // Branch address for hit tree
2363 TTree *treeH = fLoader->TreeH();
2364 if ((treeH)&&(fHitType&4)) {
2365 branch = treeH->GetBranch(branchname);
2367 branch->SetAddress(&fTrackHits);
2368 AliDebug(1,"fHitType&4 Setting");
2371 AliDebug(1,"fHitType&4 Failed (can not find branch)");
2374 // if ((treeH)&&(fHitType&2)) {
2375 // branch = treeH->GetBranch(branchname);
2377 // branch->SetAddress(&fTrackHitsOld);
2378 // AliDebug(1,"fHitType&2 Setting");
2381 // AliDebug(1,"fHitType&2 Failed (can not find branch)");
2385 void AliTPC::FinishPrimary()
2387 if (fTrackHits &&fHitType&4) fTrackHits->FlushHitStack();
2388 // if (fTrackHitsOld && fHitType&2) fTrackHitsOld->FlushHitStack();
2392 void AliTPC::AddHit2(Int_t track, Int_t *vol, Float_t *hits)
2395 // add hit to the list
2399 int primary = gAlice->GetMCApp()->GetPrimary(track);
2400 gAlice->GetMCApp()->Particle(primary)->SetBit(kKeepBit);
2404 gAlice->GetMCApp()->FlagTrack(track);
2406 if (fTrackHits && fHitType&4)
2407 fTrackHits->AddHitKartez(vol[0],rtrack, hits[0],
2408 hits[1],hits[2],(Int_t)hits[3],hits[4]);
2409 // if (fTrackHitsOld &&fHitType&2 )
2410 // fTrackHitsOld->AddHitKartez(vol[0],rtrack, hits[0],
2411 // hits[1],hits[2],(Int_t)hits[3]);
2415 void AliTPC::ResetHits()
2417 if (fHitType&1) AliDetector::ResetHits();
2418 if (fHitType>1) ResetHits2();
2421 void AliTPC::ResetHits2()
2425 if (fTrackHits && fHitType&4) fTrackHits->Clear();
2426 // if (fTrackHitsOld && fHitType&2) fTrackHitsOld->Clear();
2430 AliHit* AliTPC::FirstHit(Int_t track)
2432 if (fHitType>1) return FirstHit2(track);
2433 return AliDetector::FirstHit(track);
2435 AliHit* AliTPC::NextHit()
2440 if (fHitType>1) return NextHit2();
2442 return AliDetector::NextHit();
2445 AliHit* AliTPC::FirstHit2(Int_t track)
2448 // Initialise the hit iterator
2449 // Return the address of the first hit for track
2450 // If track>=0 the track is read from disk
2451 // while if track<0 the first hit of the current
2452 // track is returned
2455 gAlice->GetMCApp()->ResetHits();
2456 fLoader->TreeH()->GetEvent(track);
2459 if (fTrackHits && fHitType&4) {
2460 fTrackHits->First();
2461 return fTrackHits->GetHit();
2463 // if (fTrackHitsOld && fHitType&2) {
2464 // fTrackHitsOld->First();
2465 // return fTrackHitsOld->GetHit();
2471 AliHit* AliTPC::NextHit2()
2474 //Return the next hit for the current track
2477 // if (fTrackHitsOld && fHitType&2) {
2478 // fTrackHitsOld->Next();
2479 // return fTrackHitsOld->GetHit();
2483 return fTrackHits->GetHit();
2489 void AliTPC::RemapTrackHitIDs(Int_t *map)
2494 if (!fTrackHits) return;
2496 // if (fTrackHitsOld && fHitType&2){
2497 // AliObjectArray * arr = fTrackHitsOld->fTrackHitsInfo;
2498 // for (UInt_t i=0;i<arr->GetSize();i++){
2499 // AliTrackHitsInfo * info = (AliTrackHitsInfo *)(arr->At(i));
2500 // info->fTrackID = map[info->fTrackID];
2503 // if (fTrackHitsOld && fHitType&4){
2504 if (fTrackHits && fHitType&4){
2505 TClonesArray * arr = fTrackHits->GetArray();;
2506 for (Int_t i=0;i<arr->GetEntriesFast();i++){
2507 AliTrackHitsParamV2 * info = (AliTrackHitsParamV2 *)(arr->At(i));
2508 info->SetTrackID(map[info->GetTrackID()]);
2513 Bool_t AliTPC::TrackInVolume(Int_t id,Int_t track)
2515 //return bool information - is track in given volume
2516 //load only part of the track information
2517 //return true if current track is in volume
2520 // if (fTrackHitsOld && fHitType&2) {
2521 // TBranch * br = fLoader->TreeH()->GetBranch("fTrackHitsInfo");
2522 // br->GetEvent(track);
2523 // AliObjectArray * ar = fTrackHitsOld->fTrackHitsInfo;
2524 // for (UInt_t j=0;j<ar->GetSize();j++){
2525 // if ( ((AliTrackHitsInfo*)ar->At(j))->fVolumeID==id) return kTRUE;
2529 if (fTrackHits && fHitType&4) {
2530 TBranch * br1 = fLoader->TreeH()->GetBranch("fVolumes");
2531 TBranch * br2 = fLoader->TreeH()->GetBranch("fNVolumes");
2532 br2->GetEvent(track);
2533 br1->GetEvent(track);
2534 Int_t *volumes = fTrackHits->GetVolumes();
2535 Int_t nvolumes = fTrackHits->GetNVolumes();
2536 if (!volumes && nvolumes>0) {
2537 AliWarning(Form("Problematic track\t%d\t%d",track,nvolumes));
2540 for (Int_t j=0;j<nvolumes; j++)
2541 if (volumes[j]==id) return kTRUE;
2545 TBranch * br = fLoader->TreeH()->GetBranch("fSector");
2546 br->GetEvent(track);
2547 for (Int_t j=0;j<fHits->GetEntriesFast();j++){
2548 if ( ((AliTPChit*)fHits->At(j))->fSector==id) return kTRUE;
2556 AliLoader* AliTPC::MakeLoader(const char* topfoldername)
2559 fLoader = new AliTPCLoader(GetName(),topfoldername);
2563 ////////////////////////////////////////////////////////////////////////
2564 AliTPCParam* AliTPC::LoadTPCParam(TFile *file) {
2566 // load TPC paarmeters from a given file or create new if the object
2567 // is not found there
2568 // 12/05/2003 This method should be moved to the AliTPCLoader
2569 // and one has to decide where to store the TPC parameters
2572 //sprintf(paramName,"75x40_100x60_150x60");
2573 snprintf(paramName,50,"75x40_100x60_150x60");
2574 AliTPCParam *paramTPC=(AliTPCParam*)file->Get(paramName);
2576 AliDebugClass(1,Form("TPC parameters %s found.",paramName));
2578 AliWarningClass("TPC parameters not found. Create new (they may be incorrect)");
2579 //paramTPC = new AliTPCParamSR;
2580 paramTPC = AliTPCcalibDB::Instance()->GetParameters();
2581 if (!paramTPC->IsGeoRead()){
2583 // read transformation matrices for gGeoManager
2585 paramTPC->ReadGeoMatrices();
2591 // the older version of parameters can be accessed with this code.
2592 // In some cases, we have old parameters saved in the file but
2593 // digits were created with new parameters, it can be distinguish
2594 // by the name of TPC TreeD. The code here is just for the case
2595 // we would need to compare with old data, uncomment it if needed.
2597 // char paramName[50];
2598 // sprintf(paramName,"75x40_100x60");
2599 // AliTPCParam *paramTPC=(AliTPCParam*)in->Get(paramName);
2601 // cout<<"TPC parameters "<<paramName<<" found."<<endl;
2603 // sprintf(paramName,"75x40_100x60_150x60");
2604 // paramTPC=(AliTPCParam*)in->Get(paramName);
2606 // cout<<"TPC parameters "<<paramName<<" found."<<endl;
2608 // cerr<<"TPC parameters not found. Create new (they may be incorrect)."
2610 // paramTPC = new AliTPCParamSR;