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
112 // fTrackHitsOld = 0;
113 #if ROOT_VERSION_CODE >= ROOT_VERSION(4,0,1)
114 fHitType = 4; // ROOT containers
116 fHitType = 2; //default CONTAINERS - based on ROOT structure
120 //_____________________________________________________________________________
121 AliTPC::AliTPC(const char *name, const char *title)
122 : AliDetector(name,title),
132 fPrimaryIonisation(0),
143 // Standard constructor
147 // Initialise arrays of hits and digits
148 fHits = new TClonesArray("AliTPChit", 176);
149 gAlice->GetMCApp()->AddHitList(fHits);
151 fTrackHits = new AliTPCTrackHitsV2;
152 fTrackHits->SetHitPrecision(0.002);
153 fTrackHits->SetStepPrecision(0.003);
154 fTrackHits->SetMaxDistance(100);
156 //fTrackHitsOld = new AliTPCTrackHits; //MI - 13.09.2000
157 //fTrackHitsOld->SetHitPrecision(0.002);
158 //fTrackHitsOld->SetStepPrecision(0.003);
159 //fTrackHitsOld->SetMaxDistance(100);
162 #if ROOT_VERSION_CODE >= ROOT_VERSION(4,0,1)
163 fHitType = 4; // ROOT containers
173 // Initialise color attributes
174 //PH SetMarkerColor(kYellow);
177 // Set TPC parameters
181 if (!strcmp(title,"Default")) {
182 //fTPCParam = new AliTPCParamSR;
183 fTPCParam = AliTPCcalibDB::Instance()->GetParameters();
185 AliWarning("In Config.C you must set non-default parameters.");
190 void AliTPC::CreateDebugStremer(){
192 // Create Debug streamer to check simulation
194 fDebugStreamer = new TTreeSRedirector("TPCSimdebug.root");
196 //_____________________________________________________________________________
207 delete fTrackHits; //MI 15.09.2000
208 // delete fTrackHitsOld; //MI 10.12.2001
211 delete [] fNoiseTable;
212 delete [] fActiveSectors;
213 if (fDebugStreamer) delete fDebugStreamer;
216 //_____________________________________________________________________________
217 void AliTPC::AddHit(Int_t track, Int_t *vol, Float_t *hits)
220 // Add a hit to the list
223 TClonesArray &lhits = *fHits;
224 new(lhits[fNhits++]) AliTPChit(fIshunt,track,vol,hits);
227 AddHit2(track,vol,hits);
230 //_____________________________________________________________________________
231 void AliTPC::CreateMaterials()
233 //-----------------------------------------------
234 // Create Materials for for TPC simulations
235 //-----------------------------------------------
237 //-----------------------------------------------------------------
238 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
239 //-----------------------------------------------------------------
241 Int_t iSXFLD=((AliMagF*)TGeoGlobalMagField::Instance()->GetField())->Integ();
242 Float_t sXMGMX=((AliMagF*)TGeoGlobalMagField::Instance()->GetField())->Max();
244 Float_t amat[5]; // atomic numbers
245 Float_t zmat[5]; // z
246 Float_t wmat[5]; // proportions
252 //***************** Gases *************************
255 //--------------------------------------------------------------
256 // gases - air and CO2
257 //--------------------------------------------------------------
273 AliMixture(10,"CO2",amat,zmat,density,2,wmat);
288 AliMixture(11,"Air",amat,zmat,density,2,wmat);
290 //----------------------------------------------------------------
292 //----------------------------------------------------------------
295 // Drift gases 1 - nonsensitive, 2 - sensitive
296 // Ne-CO2-N2 (90-10-5) (volume) values at 20deg and 1 atm.
297 // rho(Ne) = 0.839 g/cm^3, rho(CO2) = 1.842 g/cm^3, rho(N2) = 1.165 g/cm^3
298 // for the calculation - everything is normalized to 1
317 AliMixture(12,"Ne-CO2-N-1",amat,zmat,density,4,wmat);
318 AliMixture(13,"Ne-CO2-N-2",amat,zmat,density,4,wmat);
319 AliMixture(30,"Ne-CO2-N-3",amat,zmat,density,4,wmat);
320 //----------------------------------------------------------------------
322 //----------------------------------------------------------------------
344 AliMixture(14,"Kevlar",amat,zmat,density,-4,wmat);
365 AliMixture(15,"NOMEX",amat,zmat,density,-4,wmat);
383 AliMixture(16,"Makrolon",amat,zmat,density,-3,wmat);
401 AliMixture(17, "Tedlar",amat,zmat,density,-3,wmat);
419 AliMixture(18, "Mylar",amat,zmat,density,-3,wmat);
420 // material for "prepregs"
421 // Epoxy - C14 H20 O3
424 // prepreg1 60% C-fiber, 40% epoxy (vol)
439 AliMixture(19, "Prepreg1",amat,zmat,density,3,wmat);
441 //prepreg2 60% glass-fiber, 40% epoxy
460 AliMixture(20, "Prepreg2",amat,zmat,density,4,wmat);
462 //prepreg3 50% glass-fiber, 50% epoxy
481 AliMixture(21, "Prepreg3",amat,zmat,density,4,wmat);
483 // G10 60% SiO2 40% epoxy
502 AliMixture(22, "G10",amat,zmat,density,4,wmat);
511 AliMaterial(23,"Al",amat[0],zmat[0],density,999.,999.);
513 // Si (for electronics
520 AliMaterial(24,"Si",amat[0],zmat[0],density,999.,999.);
529 AliMaterial(25,"Cu",amat[0],zmat[0],density,999.,999.);
547 AliMixture(33,"Brass",amat,zmat,density,2,wmat);
549 // Epoxy - C14 H20 O3
565 AliMixture(26,"Epoxy",amat,zmat,density,-3,wmat);
567 // epoxy film - 90% epoxy, 10% glass fiber
587 AliMixture(34, "Epoxy-film",amat,zmat,density,4,wmat);
605 AliMixture(27,"Plexiglas",amat,zmat,density,-3,wmat);
613 AliMaterial(28,"C",amat[0],zmat[0],density,999.,999.);
615 // Fe (steel for the inner heat screen)
623 AliMaterial(29,"Fe",amat[0],zmat[0],density,999.,999.);
625 // Peek - (C6H4-O-OC6H4-O-C6H4-CO)n
640 AliMixture(30,"Peek",amat,zmat,density,-3,wmat);
655 AliMixture(31,"Alumina",amat,zmat,density,-2,wmat);
674 AliMixture(32,"Water",amat,zmat,density,-2,wmat);
677 //----------------------------------------------------------
678 // tracking media for gases
679 //----------------------------------------------------------
681 AliMedium(0, "Air", 11, 0, iSXFLD, sXMGMX, 10., 999., .1, .01, .1);
682 AliMedium(1, "Ne-CO2-N-1", 12, 0, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
683 AliMedium(2, "Ne-CO2-N-2", 13, 1, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
684 AliMedium(3,"CO2",10,0, iSXFLD, sXMGMX, 10., 999.,.1, .001, .001);
685 AliMedium(20, "Ne-CO2-N-3", 30, 1, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
686 //-----------------------------------------------------------
687 // tracking media for solids
688 //-----------------------------------------------------------
690 AliMedium(4,"Al",23,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
691 AliMedium(5,"Kevlar",14,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
692 AliMedium(6,"Nomex",15,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
693 AliMedium(7,"Makrolon",16,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
694 AliMedium(8,"Mylar",18,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
695 AliMedium(9,"Tedlar",17,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
697 AliMedium(10,"Prepreg1",19,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
698 AliMedium(11,"Prepreg2",20,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
699 AliMedium(12,"Prepreg3",21,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
700 AliMedium(13,"Epoxy",26,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
702 AliMedium(14,"Cu",25,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
703 AliMedium(15,"Si",24,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
704 AliMedium(16,"G10",22,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
705 AliMedium(17,"Plexiglas",27,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
706 AliMedium(18,"Steel",29,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
707 AliMedium(19,"Peek",30,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
708 AliMedium(21,"Alumina",31,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
709 AliMedium(22,"Water",32,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
710 AliMedium(23,"Brass",33,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
711 AliMedium(24,"Epoxyfm",34,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
714 void AliTPC::GenerNoise(Int_t tablesize)
717 //Generate table with noise
724 if (fNoiseTable) delete[] fNoiseTable;
725 fNoiseTable = new Float_t[tablesize];
726 fNoiseDepth = tablesize;
727 fCurrentNoise =0; //!index of the noise in the noise table
729 Float_t norm = fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac();
730 for (Int_t i=0;i<tablesize;i++) fNoiseTable[i]= gRandom->Gaus(0,norm);
733 Float_t AliTPC::GetNoise()
735 // get noise from table
736 // if ((fCurrentNoise%10)==0)
737 // fCurrentNoise= gRandom->Rndm()*fNoiseDepth;
738 if (fCurrentNoise>=fNoiseDepth) fCurrentNoise=0;
739 return fNoiseTable[fCurrentNoise++];
740 //gRandom->Gaus(0, fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac());
744 Bool_t AliTPC::IsSectorActive(Int_t sec) const
747 // check if the sector is active
748 if (!fActiveSectors) return kTRUE;
749 else return fActiveSectors[sec];
752 void AliTPC::SetActiveSectors(Int_t * sectors, Int_t n)
754 // activate interesting sectors
755 SetTreeAddress();//just for security
756 if (!fActiveSectors) fActiveSectors = new Bool_t[fTPCParam->GetNSector()];
757 for (Int_t i=0;i<fTPCParam->GetNSector();i++) fActiveSectors[i]=kFALSE;
758 for (Int_t i=0;i<n;i++)
759 if ((sectors[i]>=0) && sectors[i]<fTPCParam->GetNSector()) fActiveSectors[sectors[i]]=kTRUE;
763 void AliTPC::SetActiveSectors(Int_t flag)
766 // activate sectors which were hitted by tracks
768 SetTreeAddress();//just for security
769 if (fHitType==0) return; // if Clones hit - not short volume ID information
770 if (!fActiveSectors) fActiveSectors = new Bool_t[fTPCParam->GetNSector()];
772 for (Int_t i=0;i<fTPCParam->GetNSector();i++) fActiveSectors[i]=kTRUE;
775 for (Int_t i=0;i<fTPCParam->GetNSector();i++) fActiveSectors[i]=kFALSE;
777 if (fLoader->TreeH() == 0x0)
779 AliFatal("Can not find TreeH in folder");
782 if (fHitType>1) branch = fLoader->TreeH()->GetBranch("TPC2");
783 else branch = fLoader->TreeH()->GetBranch("TPC");
784 Stat_t ntracks = fLoader->TreeH()->GetEntries();
785 // loop over all hits
786 AliDebug(1,Form("Got %d tracks", (Int_t) ntracks));
788 for(Int_t track=0;track<ntracks;track++) {
791 if (fTrackHits && fHitType&4) {
792 TBranch * br1 = fLoader->TreeH()->GetBranch("fVolumes");
793 TBranch * br2 = fLoader->TreeH()->GetBranch("fNVolumes");
794 br1->GetEvent(track);
795 br2->GetEvent(track);
796 Int_t *volumes = fTrackHits->GetVolumes();
797 for (Int_t j=0;j<fTrackHits->GetNVolumes(); j++) {
798 if (volumes[j]>-1 && volumes[j]<fTPCParam->GetNSector()) {
799 fActiveSectors[volumes[j]]=kTRUE;
802 AliError(Form("Volume %d -> sector number %d is outside (0..%d)",
805 fTPCParam->GetNSector()));
811 // if (fTrackHitsOld && fHitType&2) {
812 // TBranch * br = fLoader->TreeH()->GetBranch("fTrackHitsInfo");
813 // br->GetEvent(track);
814 // AliObjectArray * ar = fTrackHitsOld->fTrackHitsInfo;
815 // for (UInt_t j=0;j<ar->GetSize();j++){
816 // fActiveSectors[((AliTrackHitsInfo*)ar->At(j))->fVolumeID] =kTRUE;
825 //_____________________________________________________________________________
826 void AliTPC::Digits2Raw()
828 // convert digits of the current event to raw data
830 static const Int_t kThreshold = 0;
832 fLoader->LoadDigits();
833 TTree* digits = fLoader->TreeD();
835 AliError("No digits tree");
841 AliSimDigits* digrow = &digarr;
842 digits->GetBranch("Segment")->SetAddress(&digrow);
844 const char* fileName = "AliTPCDDL.dat";
845 AliTPCBuffer* buffer = new AliTPCBuffer(fileName);
849 // 2: txt files with digits
850 //BE CAREFUL, verbose level 2 MUST be used only for debugging and
851 //it is highly suggested to use this mode only for debugging digits files
852 //reasonably small, because otherwise the size of the txt files can reach
853 //quickly several MB wasting time and disk space.
854 buffer->SetVerbose(0);
856 Int_t nEntries = Int_t(digits->GetEntries());
857 Int_t previousSector = -1;
859 for (Int_t i = 0; i < nEntries; i++) {
862 fTPCParam->AdjustSectorRow(digarr.GetID(), sector, row);
863 if(previousSector != sector) {
865 previousSector = sector;
868 if (sector < 36) { //inner sector [0;35]
870 //the whole row is written into the output file
871 buffer->WriteRowBinary(kThreshold, digrow, 0, 0, 0,
872 sector, subSector, row);
874 //only the pads in the range [37;48] are written into the output file
875 buffer->WriteRowBinary(kThreshold, digrow, 37, 48, 1,
876 sector, subSector, row);
878 //only the pads outside the range [37;48] are written into the output file
879 buffer->WriteRowBinary(kThreshold, digrow, 37, 48, 2,
880 sector, subSector, row);
883 } else { //outer sector [36;71]
884 if (row == 54) subSector = 2;
885 if ((row != 27) && (row != 76)) {
886 buffer->WriteRowBinary(kThreshold, digrow, 0, 0, 0,
887 sector, subSector, row);
888 } else if (row == 27) {
889 //only the pads outside the range [43;46] are written into the output file
890 buffer->WriteRowBinary(kThreshold, digrow, 43, 46, 2,
891 sector, subSector, row);
893 //only the pads in the range [43;46] are written into the output file
894 buffer->WriteRowBinary(kThreshold, digrow, 43, 46, 1,
895 sector, subSector, row);
896 } else if (row == 76) {
897 //only the pads outside the range [33;88] are written into the output file
898 buffer->WriteRowBinary(kThreshold, digrow, 33, 88, 2,
899 sector, subSector, row);
901 //only the pads in the range [33;88] are written into the output file
902 buffer->WriteRowBinary(kThreshold, digrow, 33, 88, 1,
903 sector, subSector, row);
909 fLoader->UnloadDigits();
911 AliTPCDDLRawData rawWriter;
912 rawWriter.SetVerbose(0);
914 rawWriter.RawData(fileName);
915 gSystem->Unlink(fileName);
920 //_____________________________________________________________________________
921 Bool_t AliTPC::Raw2SDigits(AliRawReader* rawReader){
922 // Converts the TPC raw data into summable digits
923 // The method is used for merging simulated and
925 if (fLoader->TreeS() == 0x0 ) {
926 fLoader->MakeTree("S");
929 if(fDefaults == 0) SetDefaults(); // check if the parameters are set
931 //setup TPCDigitsArray
932 if(GetDigitsArray()) delete GetDigitsArray();
934 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
935 arr->SetClass("AliSimDigits");
936 arr->Setup(fTPCParam);
937 arr->MakeTree(fLoader->TreeS());
941 // set zero suppression to "0"
942 fTPCParam->SetZeroSup(0);
945 const Int_t kmaxTime = fTPCParam->GetMaxTBin();
946 const Int_t kNIS = fTPCParam->GetNInnerSector();
947 const Int_t kNOS = fTPCParam->GetNOuterSector();
948 const Int_t kNS = kNIS + kNOS;
951 AliTPCROC * roc = AliTPCROC::Instance();
952 Int_t nRowsMax = roc->GetNRows(roc->GetNSector()-1);
953 Int_t nPadsMax = roc->GetNPads(roc->GetNSector()-1,nRowsMax-1);
954 Short_t** allBins = new Short_t*[nRowsMax];
955 for (Int_t iRow = 0; iRow < nRowsMax; iRow++) {
956 Int_t maxBin = kmaxTime*nPadsMax;
957 allBins[iRow] = new Short_t[maxBin];
958 memset(allBins[iRow],0,sizeof(Short_t)*maxBin);
961 for(Int_t iSector = 0; iSector < kNS; iSector++) {
963 Int_t nRows = fTPCParam->GetNRow(iSector);
964 Int_t nDDLs = 0, indexDDL = 0;
965 if (iSector < kNIS) {
967 indexDDL = iSector * 2;
971 indexDDL = (iSector-kNIS) * 4 + kNIS * 2;
974 // Load the raw data for corresponding DDLs
977 AliTPCAltroMapping** mapping =AliTPCcalibDB::Instance()->GetMapping();
978 AliTPCRawStreamV3 input(rawReader,(AliAltroMapping**)mapping);
979 rawReader->Select("TPC",indexDDL,indexDDL+nDDLs-1);
982 for (Int_t iRow = 0; iRow < nRowsMax; iRow++) {
983 Int_t maxBin = kmaxTime*nPadsMax;
984 memset(allBins[iRow],0,sizeof(Short_t)*maxBin);
987 // Begin loop over altro data
988 while (input.NextDDL()) {
990 if (input.GetSector() != iSector)
991 AliFatal(Form("Sector index mismatch ! Expected (%d), but got (%d) !",iSector,input.GetSector()));
994 while ( input.NextChannel() ) {
996 Int_t iRow = input.GetRow();
997 if (iRow < 0 || iRow >= nRows)
998 AliFatal(Form("Pad-row index (%d) outside the range (%d -> %d) !",
1000 Int_t iPad = input.GetPad();
1002 Int_t maxPad = fTPCParam->GetNPads(iSector,iRow);
1004 if (iPad < 0 || iPad >= maxPad)
1005 AliFatal(Form("Pad index (%d) outside the range (%d -> %d) !",
1006 iPad, 0, maxPad -1));
1009 while ( input.NextBunch() ){
1010 Int_t startTbin = (Int_t)input.GetStartTimeBin();
1011 Int_t bunchlength = (Int_t)input.GetBunchLength();
1012 const UShort_t *sig = input.GetSignals();
1013 for (Int_t iTime = 0; iTime<bunchlength; iTime++){
1014 Int_t iTimeBin=startTbin-iTime;
1015 if ( iTimeBin < 0 || iTimeBin >= kmaxTime) {
1017 //AliFatal(Form("Timebin index (%d) outside the range (%d -> %d) !",
1018 // iTimeBin, 0, kmaxTime -1));
1021 Int_t maxBin = kmaxTime*maxPad;
1022 if (((iPad*kmaxTime+iTimeBin) >= maxBin) ||
1023 ((iPad*kmaxTime+iTimeBin) < 0))
1024 AliFatal(Form("Index outside the allowed range"
1025 " Sector=%d Row=%d Pad=%d Timebin=%d"
1026 " (Max.index=%d)",iSector,iRow,iPad,iTimeBin,maxBin));
1027 allBins[iRow][iPad*kmaxTime+iTimeBin] = sig[iTime];
1030 } // End loop over altro data
1033 // Now fill the digits array
1034 if (fDigitsArray->GetTree()==0) {
1035 AliFatal("Tree not set in fDigitsArray");
1038 for (Int_t iRow = 0; iRow < nRows; iRow++) {
1039 AliDigits * dig = fDigitsArray->CreateRow(iSector,iRow);
1040 Int_t maxPad = fTPCParam->GetNPads(iSector,iRow);
1041 for(Int_t iPad = 0; iPad < maxPad; iPad++) {
1042 for(Int_t iTimeBin = 0; iTimeBin < kmaxTime; iTimeBin++) {
1043 Short_t q = allBins[iRow][iPad*kmaxTime + iTimeBin];
1044 if (q <= 0) continue;
1046 dig->SetDigitFast((Short_t)q,iTimeBin,iPad);
1049 fDigitsArray->StoreRow(iSector,iRow);
1050 Int_t ndig = dig->GetDigitSize();
1053 Form("*** Sector, row, compressed digits %d %d %d ***\n",
1054 iSector,iRow,ndig));
1056 fDigitsArray->ClearRow(iSector,iRow);
1058 } // end of the sector digitization
1060 // get LHC clock phase from the digits tree
1061 TParameter<float> *ph;
1062 ph = (TParameter<float>*)fLoader->TreeD()->GetUserInfo()->FindObject("lhcphase0");
1064 // store lhc clock phase in S-digits tree
1066 fLoader->TreeS()->GetUserInfo()->Add(new TParameter<float>("lhcphase0",ph->GetVal()));
1068 fLoader->WriteSDigits("OVERWRITE");
1070 if(GetDigitsArray()) delete GetDigitsArray();
1071 SetDigitsArray(0x0);
1074 for (Int_t iRow = 0; iRow < nRowsMax; iRow++)
1075 delete [] allBins[iRow];
1081 //______________________________________________________________________
1082 AliDigitizer* AliTPC::CreateDigitizer(AliRunDigitizer* manager) const
1084 return new AliTPCDigitizer(manager);
1087 void AliTPC::SDigits2Digits2(Int_t /*eventnumber*/)
1089 //create digits from summable digits
1090 GenerNoise(500000); //create teble with noise
1092 //conect tree with sSDigits
1093 TTree *t = fLoader->TreeS();
1096 fLoader->LoadSDigits("READ");
1097 t = fLoader->TreeS();
1099 AliError("Can not get input TreeS");
1104 if (fLoader->TreeD() == 0x0) fLoader->MakeTree("D");
1106 AliSimDigits digarr, *dummy=&digarr;
1107 TBranch* sdb = t->GetBranch("Segment");
1109 AliError("Can not find branch with segments in TreeS.");
1113 sdb->SetAddress(&dummy);
1115 Stat_t nentries = t->GetEntries();
1117 // set zero suppression
1119 fTPCParam->SetZeroSup(2);
1121 // get zero suppression
1123 Int_t zerosup = fTPCParam->GetZeroSup();
1125 //make tree with digits
1127 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1128 arr->SetClass("AliSimDigits");
1129 arr->Setup(fTPCParam);
1130 arr->MakeTree(fLoader->TreeD());
1132 AliTPCParam * par = fTPCParam;
1134 //Loop over segments of the TPC
1136 for (Int_t n=0; n<nentries; n++) {
1139 if (!par->AdjustSectorRow(digarr.GetID(),sec,row)) {
1140 AliWarning(Form("Invalid segment ID ! %d",digarr.GetID()));
1143 if (!IsSectorActive(sec)) continue;
1145 AliSimDigits * digrow =(AliSimDigits*) arr->CreateRow(sec,row);
1146 Int_t nrows = digrow->GetNRows();
1147 Int_t ncols = digrow->GetNCols();
1149 digrow->ExpandBuffer();
1150 digarr.ExpandBuffer();
1151 digrow->ExpandTrackBuffer();
1152 digarr.ExpandTrackBuffer();
1155 Short_t * pamp0 = digarr.GetDigits();
1156 Int_t * ptracks0 = digarr.GetTracks();
1157 Short_t * pamp1 = digrow->GetDigits();
1158 Int_t * ptracks1 = digrow->GetTracks();
1159 Int_t nelems =nrows*ncols;
1160 Int_t saturation = fTPCParam->GetADCSat() - 1;
1161 //use internal structure of the AliDigits - for speed reason
1162 //if you cahnge implementation
1163 //of the Alidigits - it must be rewriten -
1164 for (Int_t i= 0; i<nelems; i++){
1165 Float_t q = TMath::Nint(Float_t(*pamp0)/16.+GetNoise());
1167 if (q>saturation) q=saturation;
1170 ptracks1[0]=ptracks0[0];
1171 ptracks1[nelems]=ptracks0[nelems];
1172 ptracks1[2*nelems]=ptracks0[2*nelems];
1180 arr->StoreRow(sec,row);
1181 arr->ClearRow(sec,row);
1186 fLoader->WriteDigits("OVERWRITE");
1190 //__________________________________________________________________
1191 void AliTPC::SetDefaults(){
1193 // setting the defaults
1196 // Set response functions
1199 AliRunLoader* rl = (AliRunLoader*)fLoader->GetEventFolder()->FindObject(AliRunLoader::GetRunLoaderName());
1201 AliTPCParamSR *param=(AliTPCParamSR*)gDirectory->Get("75x40_100x60");
1203 // AliInfo("You are using 2 pad-length geom hits with 3 pad-lenght geom digits...");
1205 // param = new AliTPCParamSR();
1208 // param=(AliTPCParamSR*)gDirectory->Get("75x40_100x60_150x60");
1210 param = (AliTPCParamSR*)AliTPCcalibDB::Instance()->GetParameters();
1211 if (!param->IsGeoRead()){
1213 // read transformation matrices for gGeoManager
1215 param->ReadGeoMatrices();
1218 AliFatal("No TPC parameters found");
1222 AliTPCPRF2D * prfinner = new AliTPCPRF2D;
1223 AliTPCPRF2D * prfouter1 = new AliTPCPRF2D;
1224 AliTPCPRF2D * prfouter2 = new AliTPCPRF2D;
1227 //AliTPCRF1D * rf = new AliTPCRF1D(kTRUE);
1228 //rf->SetGauss(param->GetZSigma(),param->GetZWidth(),1.);
1229 //rf->SetOffset(3*param->GetZSigma());
1234 char strgamma4[1000];
1235 sprintf(strgamma4,"AliTPCRF1D::Gamma4((x-0.135+%f)*%f,55,160)",3*param->GetZSigma(), 1000000000*param->GetTSample()/param->GetZWidth());
1237 TF1 * fgamma4 = new TF1("fgamma4",strgamma4, -1,1);
1238 AliTPCRF1D * rf = new AliTPCRF1D(kTRUE,1000);
1239 rf->SetParam(fgamma4,param->GetZWidth(), 1,0.2);
1240 rf->SetOffset(3*param->GetZSigma());
1243 TDirectory *savedir=gDirectory;
1244 TFile *f=TFile::Open("$ALICE_ROOT/TPC/AliTPCprf2d.root");
1246 AliFatal("Can't open $ALICE_ROOT/TPC/AliTPCprf2d.root !");
1249 prfinner->Read("prf_07504_Gati_056068_d02");
1250 //PH Set different names
1251 s=prfinner->GetGRF()->GetName();
1253 prfinner->GetGRF()->SetName(s.Data());
1255 prfouter1->Read("prf_10006_Gati_047051_d03");
1256 s=prfouter1->GetGRF()->GetName();
1258 prfouter1->GetGRF()->SetName(s.Data());
1260 prfouter2->Read("prf_15006_Gati_047051_d03");
1261 s=prfouter2->GetGRF()->GetName();
1263 prfouter2->GetGRF()->SetName(s.Data());
1268 param->SetInnerPRF(prfinner);
1269 param->SetOuter1PRF(prfouter1);
1270 param->SetOuter2PRF(prfouter2);
1271 param->SetTimeRF(rf);
1281 //__________________________________________________________________
1282 void AliTPC::Hits2Digits()
1285 // creates digits from hits
1287 if (!fTPCParam->IsGeoRead()){
1289 // read transformation matrices for gGeoManager
1291 fTPCParam->ReadGeoMatrices();
1294 fLoader->LoadHits("read");
1295 fLoader->LoadDigits("recreate");
1296 AliRunLoader* runLoader = fLoader->GetRunLoader();
1298 for (Int_t iEvent = 0; iEvent < runLoader->GetNumberOfEvents(); iEvent++) {
1299 //PH runLoader->GetEvent(iEvent);
1300 Hits2Digits(iEvent);
1303 fLoader->UnloadHits();
1304 fLoader->UnloadDigits();
1306 //__________________________________________________________________
1307 void AliTPC::Hits2Digits(Int_t eventnumber)
1309 //----------------------------------------------------
1310 // Loop over all sectors for a single event
1311 //----------------------------------------------------
1312 AliRunLoader* rl = (AliRunLoader*)fLoader->GetEventFolder()->FindObject(AliRunLoader::GetRunLoaderName());
1313 rl->GetEvent(eventnumber);
1315 if (fLoader->TreeH() == 0x0) {
1316 if(fLoader->LoadHits()) {
1317 AliError("Can not load hits.");
1322 if (fLoader->TreeD() == 0x0 ) {
1323 fLoader->MakeTree("D");
1324 if (fLoader->TreeD() == 0x0 ) {
1325 AliError("Can not get TreeD");
1330 if(fDefaults == 0) SetDefaults(); // check if the parameters are set
1331 GenerNoise(500000); //create teble with noise
1333 //setup TPCDigitsArray
1335 if(GetDigitsArray()) delete GetDigitsArray();
1337 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1338 arr->SetClass("AliSimDigits");
1339 arr->Setup(fTPCParam);
1341 arr->MakeTree(fLoader->TreeD());
1342 SetDigitsArray(arr);
1344 fDigitsSwitch=0; // standard digits
1345 // here LHC clock phase
1347 switch (fLHCclockPhaseSw){
1354 lhcph = (Int_t)(gRandom->Rndm()/0.25);
1358 // not implemented yet
1361 // adding phase to the TreeD user info
1362 fLoader->TreeD()->GetUserInfo()->Add(new TParameter<float>("lhcphase0",lhcph));
1364 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++)
1365 if (IsSectorActive(isec)) {
1366 AliDebug(1,Form("Hits2Digits: Sector %d is active.",isec));
1367 Hits2DigitsSector(isec);
1370 AliDebug(1,Form("Hits2Digits: Sector %d is NOT active.",isec));
1373 fLoader->WriteDigits("OVERWRITE");
1375 //this line prevents the crash in the similar one
1376 //on the beginning of this method
1377 //destructor attempts to reset the tree, which is deleted by the loader
1378 //need to be redesign
1379 if(GetDigitsArray()) delete GetDigitsArray();
1380 SetDigitsArray(0x0);
1384 //__________________________________________________________________
1385 void AliTPC::Hits2SDigits2(Int_t eventnumber)
1388 //-----------------------------------------------------------
1389 // summable digits - 16 bit "ADC", no noise, no saturation
1390 //-----------------------------------------------------------
1392 //----------------------------------------------------
1393 // Loop over all sectors for a single event
1394 //----------------------------------------------------
1396 AliRunLoader* rl = fLoader->GetRunLoader();
1398 rl->GetEvent(eventnumber);
1399 if (fLoader->TreeH() == 0x0) {
1400 if(fLoader->LoadHits()) {
1401 AliError("Can not load hits.");
1408 if (fLoader->TreeS() == 0x0 ) {
1409 fLoader->MakeTree("S");
1412 if(fDefaults == 0) SetDefaults();
1414 GenerNoise(500000); //create table with noise
1415 //setup TPCDigitsArray
1417 if(GetDigitsArray()) delete GetDigitsArray();
1420 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1421 arr->SetClass("AliSimDigits");
1422 arr->Setup(fTPCParam);
1423 arr->MakeTree(fLoader->TreeS());
1425 SetDigitsArray(arr);
1427 fDigitsSwitch=1; // summable digits
1429 // set zero suppression to "0"
1430 // here LHC clock phase
1432 switch (fLHCclockPhaseSw){
1439 lhcph = (Int_t)(gRandom->Rndm()/0.25);
1443 // not implemented yet
1446 // adding phase to the TreeS user info
1448 fLoader->TreeS()->GetUserInfo()->Add(new TParameter<float>("lhcphase0",lhcph));
1450 fTPCParam->SetZeroSup(0);
1452 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++)
1453 if (IsSectorActive(isec)) {
1454 Hits2DigitsSector(isec);
1457 fLoader->WriteSDigits("OVERWRITE");
1459 //this line prevents the crash in the similar one
1460 //on the beginning of this method
1461 //destructor attempts to reset the tree, which is deleted by the loader
1462 //need to be redesign
1463 if(GetDigitsArray()) delete GetDigitsArray();
1464 SetDigitsArray(0x0);
1466 //__________________________________________________________________
1468 void AliTPC::Hits2SDigits()
1471 //-----------------------------------------------------------
1472 // summable digits - 16 bit "ADC", no noise, no saturation
1473 //-----------------------------------------------------------
1475 if (!fTPCParam->IsGeoRead()){
1477 // read transformation matrices for gGeoManager
1479 fTPCParam->ReadGeoMatrices();
1482 fLoader->LoadHits("read");
1483 fLoader->LoadSDigits("recreate");
1484 AliRunLoader* runLoader = fLoader->GetRunLoader();
1486 for (Int_t iEvent = 0; iEvent < runLoader->GetNumberOfEvents(); iEvent++) {
1487 runLoader->GetEvent(iEvent);
1490 Hits2SDigits2(iEvent);
1493 fLoader->UnloadHits();
1494 fLoader->UnloadSDigits();
1495 if (fDebugStreamer) {
1496 delete fDebugStreamer;
1500 //_____________________________________________________________________________
1502 void AliTPC::Hits2DigitsSector(Int_t isec)
1504 //-------------------------------------------------------------------
1505 // TPC conversion from hits to digits.
1506 //-------------------------------------------------------------------
1508 //-----------------------------------------------------------------
1509 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1510 //-----------------------------------------------------------------
1512 //-------------------------------------------------------
1513 // Get the access to the track hits
1514 //-------------------------------------------------------
1516 // check if the parameters are set - important if one calls this method
1517 // directly, not from the Hits2Digits
1519 if(fDefaults == 0) SetDefaults();
1521 TTree *tH = fLoader->TreeH(); // pointer to the hits tree
1523 AliFatal("Can not find TreeH in folder");
1527 Stat_t ntracks = tH->GetEntries();
1533 Int_t nrows =fTPCParam->GetNRow(isec);
1535 row= new TObjArray* [nrows+2]; // 2 extra rows for cross talk
1537 MakeSector(isec,nrows,tH,ntracks,row);
1539 //--------------------------------------------------------
1540 // Digitize this sector, row by row
1541 // row[i] is the pointer to the TObjArray of TVectors,
1542 // each one containing electrons accepted on this
1543 // row, assigned into tracks
1544 //--------------------------------------------------------
1548 if (fDigitsArray->GetTree()==0) {
1549 AliFatal("Tree not set in fDigitsArray");
1552 for (i=0;i<nrows;i++){
1554 AliDigits * dig = fDigitsArray->CreateRow(isec,i);
1556 DigitizeRow(i,isec,row);
1558 fDigitsArray->StoreRow(isec,i);
1560 Int_t ndig = dig->GetDigitSize();
1563 Form("*** Sector, row, compressed digits %d %d %d ***\n",
1566 fDigitsArray->ClearRow(isec,i);
1569 } // end of the sector digitization
1571 for(i=0;i<nrows+2;i++){
1576 delete [] row; // delete the array of pointers to TObjArray-s
1579 } // end of Hits2DigitsSector
1582 //_____________________________________________________________________________
1583 void AliTPC::DigitizeRow(Int_t irow,Int_t isec,TObjArray **rows)
1585 //-----------------------------------------------------------
1586 // Single row digitization, coupling from the neighbouring
1587 // rows taken into account
1588 //-----------------------------------------------------------
1590 //-----------------------------------------------------------------
1591 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1592 // Modified: Marian Ivanov GSI Darmstadt, m.ivanov@gsi.de
1593 //-----------------------------------------------------------------
1595 Float_t zerosup = fTPCParam->GetZeroSup();
1596 AliTPCCalPad * gainTPC = AliTPCcalibDB::Instance()->GetDedxGainFactor();
1597 AliTPCCalPad * noiseTPC = AliTPCcalibDB::Instance()->GetPadNoise();
1598 AliTPCCalROC * gainROC = gainTPC->GetCalROC(isec); // pad gains per given sector
1599 AliTPCCalROC * noiseROC = noiseTPC->GetCalROC(isec); // noise per given sector
1602 fCurrentIndex[1]= isec;
1605 Int_t nofPads = fTPCParam->GetNPads(isec,irow);
1606 Int_t nofTbins = fTPCParam->GetMaxTBin();
1607 Int_t indexRange[4];
1609 // Integrated signal for this row
1610 // and a single track signal
1613 TMatrixF *m1 = new TMatrixF(0,nofPads,0,nofTbins); // integrated
1614 TMatrixF *m2 = new TMatrixF(0,nofPads,0,nofTbins); // single
1616 TMatrixF &total = *m1;
1618 // Array of pointers to the label-signal list
1620 Int_t nofDigits = nofPads*nofTbins; // number of digits for this row
1621 Float_t **pList = new Float_t* [nofDigits];
1625 for(lp=0;lp<nofDigits;lp++)pList[lp]=0; // set all pointers to NULL
1631 for (Int_t row= row1;row<=row2;row++){
1632 Int_t nTracks= rows[row]->GetEntries();
1633 for (i1=0;i1<nTracks;i1++){
1634 fCurrentIndex[2]= row;
1635 fCurrentIndex[3]=irow+1;
1637 m2->Zero(); // clear single track signal matrix
1638 Float_t trackLabel = GetSignal(rows[row],i1,m2,m1,indexRange);
1639 GetList(trackLabel,nofPads,m2,indexRange,pList);
1641 else GetSignal(rows[row],i1,0,m1,indexRange);
1647 AliDigits *dig = fDigitsArray->GetRow(isec,irow);
1649 Float_t fzerosup = zerosup+0.5;
1650 for(Int_t it=0;it<nofTbins;it++){
1651 for(Int_t ip=0;ip<nofPads;ip++){
1653 Float_t q=total(ip,it);
1654 if(fDigitsSwitch == 0){
1655 Float_t gain = gainROC->GetValue(irow,ip); // get gain for given - pad-row pad
1656 Float_t noisePad = noiseROC->GetValue(irow,ip);
1659 q+=GetNoise()*noisePad;
1660 if(q <=fzerosup) continue; // do not fill zeros
1662 if(q >= fTPCParam->GetADCSat()) q = fTPCParam->GetADCSat() - 1; // saturation
1667 if(q <= 0.) continue; // do not fill zeros
1668 if(q>2000.) q=2000.;
1674 // "real" signal or electronic noise (list = -1)?
1677 for(Int_t j1=0;j1<3;j1++){
1678 tracks[j1] = (pList[gi]) ?(Int_t)(*(pList[gi]+j1)) : -2;
1683 <A NAME="AliDigits"></A>
1684 using of AliDigits object
1687 dig->SetDigitFast((Short_t)q,it,ip);
1688 if (fDigitsArray->IsSimulated()) {
1689 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[0],it,ip,0);
1690 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[1],it,ip,1);
1691 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[2],it,ip,2);
1694 } // end of loop over time buckets
1695 } // end of lop over pads
1701 // glitch filters if normal simulated digits
1703 if(!fDigitsSwitch) ((AliSimDigits*)dig)->GlitchFilter();
1705 // This row has been digitized, delete nonused stuff
1708 for(lp=0;lp<nofDigits;lp++){
1709 if(pList[lp]) delete [] pList[lp];
1717 } // end of DigitizeRow
1719 //_____________________________________________________________________________
1721 Float_t AliTPC::GetSignal(TObjArray *p1, Int_t ntr,
1722 TMatrixF *m1, TMatrixF *m2,Int_t *indexRange)
1725 //---------------------------------------------------------------
1726 // Calculates 2-D signal (pad,time) for a single track,
1727 // returns a pointer to the signal matrix and the track label
1728 // No digitization is performed at this level!!!
1729 //---------------------------------------------------------------
1731 //-----------------------------------------------------------------
1732 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1733 // Modified: Marian Ivanov
1734 //-----------------------------------------------------------------
1738 tv = (TVector*)p1->At(ntr); // pointer to a track
1741 Float_t label = v(0);
1742 Int_t centralPad = (fTPCParam->GetNPads(fCurrentIndex[1],fCurrentIndex[3]-1))/2;
1744 Int_t nElectrons = (tv->GetNrows()-1)/5;
1745 indexRange[0]=9999; // min pad
1746 indexRange[1]=-1; // max pad
1747 indexRange[2]=9999; //min time
1748 indexRange[3]=-1; // max time
1750 TMatrixF &signal = *m1;
1751 TMatrixF &total = *m2;
1753 // Get LHC clock phase
1755 TParameter<float> *ph;
1756 if(fDigitsSwitch){// s-digits
1757 ph = (TParameter<float>*)fLoader->TreeS()->GetUserInfo()->FindObject("lhcphase0");
1759 else{ // normal digits
1760 ph = (TParameter<float>*)fLoader->TreeD()->GetUserInfo()->FindObject("lhcphase0");
1762 // Loop over all electrons
1764 for(Int_t nel=0; nel<nElectrons; nel++){
1766 Float_t aval = v(idx+4);
1767 Float_t eltoadcfac=aval*fTPCParam->GetTotalNormFac();
1768 Float_t xyz[4]={v(idx+1),v(idx+2),v(idx+3),v(idx+5)};
1769 Int_t n = ((AliTPCParamSR*)fTPCParam)->CalcResponseFast(xyz,fCurrentIndex,
1770 fCurrentIndex[3],ph->GetVal());
1772 Int_t *index = fTPCParam->GetResBin(0);
1773 Float_t *weight = & (fTPCParam->GetResWeight(0));
1775 if (n>0) for (Int_t i =0; i<n; i++){
1776 Int_t pad=index[1]+centralPad; //in digit coordinates central pad has coordinate 0
1779 Int_t time=index[2];
1780 Float_t qweight = *(weight)*eltoadcfac;
1782 if (m1!=0) signal(pad,time)+=qweight;
1783 total(pad,time)+=qweight;
1784 if (indexRange[0]>pad) indexRange[0]=pad;
1785 if (indexRange[1]<pad) indexRange[1]=pad;
1786 if (indexRange[2]>time) indexRange[2]=time;
1787 if (indexRange[3]<time) indexRange[3]=time;
1794 } // end of loop over electrons
1796 return label; // returns track label when finished
1799 //_____________________________________________________________________________
1800 void AliTPC::GetList(Float_t label,Int_t np,TMatrixF *m,
1801 Int_t *indexRange, Float_t **pList)
1803 //----------------------------------------------------------------------
1804 // Updates the list of tracks contributing to digits for a given row
1805 //----------------------------------------------------------------------
1807 //-----------------------------------------------------------------
1808 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1809 //-----------------------------------------------------------------
1811 TMatrixF &signal = *m;
1813 // lop over nonzero digits
1815 for(Int_t it=indexRange[2];it<indexRange[3]+1;it++){
1816 for(Int_t ip=indexRange[0];ip<indexRange[1]+1;ip++){
1819 // accept only the contribution larger than 500 electrons (1/2 s_noise)
1821 if(signal(ip,it)<0.5) continue;
1823 Int_t globalIndex = it*np+ip; // globalIndex starts from 0!
1825 if(!pList[globalIndex]){
1828 // Create new list (6 elements - 3 signals and 3 labels),
1831 pList[globalIndex] = new Float_t [6];
1835 *pList[globalIndex] = -1.;
1836 *(pList[globalIndex]+1) = -1.;
1837 *(pList[globalIndex]+2) = -1.;
1838 *(pList[globalIndex]+3) = -1.;
1839 *(pList[globalIndex]+4) = -1.;
1840 *(pList[globalIndex]+5) = -1.;
1842 *pList[globalIndex] = label;
1843 *(pList[globalIndex]+3) = signal(ip,it);
1847 // check the signal magnitude
1849 Float_t highest = *(pList[globalIndex]+3);
1850 Float_t middle = *(pList[globalIndex]+4);
1851 Float_t lowest = *(pList[globalIndex]+5);
1854 // compare the new signal with already existing list
1857 if(signal(ip,it)<lowest) continue; // neglect this track
1861 if (signal(ip,it)>highest){
1862 *(pList[globalIndex]+5) = middle;
1863 *(pList[globalIndex]+4) = highest;
1864 *(pList[globalIndex]+3) = signal(ip,it);
1866 *(pList[globalIndex]+2) = *(pList[globalIndex]+1);
1867 *(pList[globalIndex]+1) = *pList[globalIndex];
1868 *pList[globalIndex] = label;
1870 else if (signal(ip,it)>middle){
1871 *(pList[globalIndex]+5) = middle;
1872 *(pList[globalIndex]+4) = signal(ip,it);
1874 *(pList[globalIndex]+2) = *(pList[globalIndex]+1);
1875 *(pList[globalIndex]+1) = label;
1878 *(pList[globalIndex]+5) = signal(ip,it);
1879 *(pList[globalIndex]+2) = label;
1883 } // end of loop over pads
1884 } // end of loop over time bins
1887 //___________________________________________________________________
1888 void AliTPC::MakeSector(Int_t isec,Int_t nrows,TTree *TH,
1889 Stat_t ntracks,TObjArray **row)
1892 //-----------------------------------------------------------------
1893 // Prepares the sector digitization, creates the vectors of
1894 // tracks for each row of this sector. The track vector
1895 // contains the track label and the position of electrons.
1896 //-----------------------------------------------------------------
1899 // The trasport of the electrons through TPC drift volume
1900 // Drift (drift velocity + velocity map(not yet implemented)))
1901 // Application of the random processes (diffusion, gas gain)
1902 // Systematic effects (ExB effect in drift volume + ROCs)
1905 // Loop over primary electrons:
1906 // Creation of the secondary electrons
1907 // Loop over electrons (primary+ secondaries)
1908 // Global coordinate frame:
1909 // 1. Skip electrons if attached
1910 // 2. ExB effect in drift volume
1911 // a.) Simulation calib->GetExB()->CorrectInverse(dxyz0,dxyz1);
1912 // b.) Reconstruction - calib->GetExB()->CorrectInverse(dxyz0,dxyz1);
1913 // 3. Generation of gas gain (Random - Exponential distribution)
1914 // 4. TransportElectron function (diffusion)
1916 // 5. Conversion to the local coordinate frame pad-row, pad, timebin
1917 // 6. Apply Time0 shift - AliTPCCalPad class
1918 // a.) Plus sign in simulation
1919 // b.) Minus sign in reconstruction
1922 //-----------------------------------------------------------------
1923 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1924 // Origin: Marian Ivanov, marian.ivanov@cern.ch
1925 //-----------------------------------------------------------------
1926 AliTPCcalibDB* const calib=AliTPCcalibDB::Instance();
1927 if (gAlice){ // Set correctly the magnetic field in the ExB calculation
1928 if (!calib->GetExB()){
1929 AliMagF * field = ((AliMagF*)TGeoGlobalMagField::Instance()->GetField());
1931 calib->SetExBField(field);
1936 Float_t gasgain = fTPCParam->GetGasGain();
1937 gasgain = gasgain/fGainFactor;
1941 AliTPChit *tpcHit; // pointer to a sigle TPC hit
1944 if (fHitType>1) branch = TH->GetBranch("TPC2");
1945 else branch = TH->GetBranch("TPC");
1948 //----------------------------------------------
1949 // Create TObjArray-s, one for each row,
1950 // each TObjArray will store the TVectors
1951 // of electrons, one TVectors per each track.
1952 //----------------------------------------------
1954 Int_t *nofElectrons = new Int_t [nrows+2]; // electron counter for each row
1955 TVector **tracks = new TVector* [nrows+2]; //pointers to the track vectors
1957 for(i=0; i<nrows+2; i++){
1958 row[i] = new TObjArray;
1965 //--------------------------------------------------------------------
1966 // Loop over tracks, the "track" contains the full history
1967 //--------------------------------------------------------------------
1969 Int_t previousTrack,currentTrack;
1970 previousTrack = -1; // nothing to store so far!
1972 for(Int_t track=0;track<ntracks;track++){
1973 Bool_t isInSector=kTRUE;
1975 isInSector = TrackInVolume(isec,track);
1976 if (!isInSector) continue;
1978 branch->GetEntry(track); // get next track
1982 tpcHit = (AliTPChit*)FirstHit(-1);
1984 //--------------------------------------------------------------
1986 //--------------------------------------------------------------
1991 Int_t sector=tpcHit->fSector; // sector number
1993 tpcHit = (AliTPChit*) NextHit();
1997 // Remove hits which arrive before the TPC opening gate signal
1998 if(((fTPCParam->GetZLength(isec)-TMath::Abs(tpcHit->Z()))
1999 /fTPCParam->GetDriftV()+tpcHit->Time())<fTPCParam->GetGateDelay()) {
2000 tpcHit = (AliTPChit*) NextHit();
2004 currentTrack = tpcHit->Track(); // track number
2006 if(currentTrack != previousTrack){
2008 // store already filled fTrack
2010 for(i=0;i<nrows+2;i++){
2011 if(previousTrack != -1){
2012 if(nofElectrons[i]>0){
2013 TVector &v = *tracks[i];
2014 v(0) = previousTrack;
2015 tracks[i]->ResizeTo(5*nofElectrons[i]+1); // shrink if necessary
2016 row[i]->Add(tracks[i]);
2019 delete tracks[i]; // delete empty TVector
2025 tracks[i] = new TVector(601); // TVectors for the next fTrack
2027 } // end of loop over rows
2029 previousTrack=currentTrack; // update track label
2032 Int_t qI = (Int_t) (tpcHit->fQ); // energy loss (number of electrons)
2034 //---------------------------------------------------
2035 // Calculate the electron attachment probability
2036 //---------------------------------------------------
2039 Float_t time = 1.e6*(fTPCParam->GetZLength(isec)-TMath::Abs(tpcHit->Z()))
2040 /fTPCParam->GetDriftV();
2042 Float_t attProb = fTPCParam->GetAttCoef()*
2043 fTPCParam->GetOxyCont()*time; // fraction!
2045 //-----------------------------------------------
2046 // Loop over electrons
2047 //-----------------------------------------------
2050 for(Int_t nel=0;nel<qI;nel++){
2051 // skip if electron lost due to the attachment
2052 if((gRandom->Rndm(0)) < attProb) continue; // electron lost!
2057 Double_t dxyz0[3],dxyz1[3];
2058 dxyz0[0]=tpcHit->X();
2059 dxyz0[1]=tpcHit->Y();
2060 dxyz0[2]=tpcHit->Z();
2061 if (calib->GetExB()){
2062 calib->GetExB()->CorrectInverse(dxyz0,dxyz1);
2064 AliError("Not valid ExB calibration");
2065 dxyz1[0]=tpcHit->X();
2066 dxyz1[1]=tpcHit->Y();
2067 dxyz1[2]=tpcHit->Z();
2075 // protection for the nonphysical avalanche size (10**6 maximum)
2077 Double_t rn=TMath::Max(gRandom->Rndm(0),1.93e-22);
2078 xyz[3]= (Float_t) (-gasgain*TMath::Log(rn));
2081 TransportElectron(xyz,index);
2083 Int_t padrow = fTPCParam->GetPadRow(xyz,index);
2085 // Add Time0 correction due unisochronity
2086 // xyz[0] - pad row coordinate
2087 // xyz[1] - pad coordinate
2088 // xyz[2] - is in now time bin coordinate system
2089 Float_t correction =0;
2090 if (calib->GetPadTime0()){
2091 if (!calib->GetPadTime0()->GetCalROC(isec)) continue;
2092 Int_t npads = fTPCParam->GetNPads(isec,padrow);
2093 // Int_t pad = TMath::Nint(xyz[1]+fTPCParam->GetNPads(isec,TMath::Nint(xyz[0]))*0.5);
2094 // pad numbering from -npads/2 .. npads/2-1
2095 Int_t pad = TMath::Nint(xyz[1]+npads/2);
2097 if (pad>=npads) pad=npads-1;
2098 correction = calib->GetPadTime0()->GetCalROC(isec)->GetValue(padrow,pad);
2099 // printf("%d\t%d\t%d\t%f\n",isec,padrow,pad,correction);
2100 if (fDebugStreamer){
2101 (*fDebugStreamer)<<"Time0"<<
2109 "cor="<<correction<<
2114 xyz[2]+=fTPCParam->GetNTBinsL1(); // adding Level 1 time bin offset
2116 // Electron track time (for pileup simulation)
2117 xyz[2]+=tpcHit->Time()/fTPCParam->GetTSample(); // adding time of flight
2121 // row 0 - cross talk from the innermost row
2122 // row fNRow+1 cross talk from the outermost row
2123 rowNumber = index[2]+1;
2124 //transform position to local digit coordinates
2125 //relative to nearest pad row
2126 if ((rowNumber<0)||rowNumber>fTPCParam->GetNRow(isec)+1) continue;
2128 if (isec <fTPCParam->GetNInnerSector()) {
2129 x1 = xyz[1]*fTPCParam->GetInnerPadPitchWidth();
2130 y1 = fTPCParam->GetYInner(rowNumber);
2133 x1=xyz[1]*fTPCParam->GetOuterPadPitchWidth();
2134 y1 = fTPCParam->GetYOuter(rowNumber);
2136 // gain inefficiency at the wires edges - linear
2139 if(x1>y1) xyz[3]*=TMath::Max(1.e-6,(y1-x1+1.)); */
2141 nofElectrons[rowNumber]++;
2142 //----------------------------------
2143 // Expand vector if necessary
2144 //----------------------------------
2145 if(nofElectrons[rowNumber]>120){
2146 Int_t range = tracks[rowNumber]->GetNrows();
2147 if((nofElectrons[rowNumber])>(range-1)/5){
2149 tracks[rowNumber]->ResizeTo(range+500); // Add 100 electrons
2153 TVector &v = *tracks[rowNumber];
2154 Int_t idx = 5*nofElectrons[rowNumber]-4;
2155 Real_t * position = &(((TVector&)v)(idx)); //make code faster
2156 memcpy(position,xyz,5*sizeof(Float_t));
2158 } // end of loop over electrons
2160 tpcHit = (AliTPChit*)NextHit();
2162 } // end of loop over hits
2163 } // end of loop over tracks
2166 // store remaining track (the last one) if not empty
2169 for(i=0;i<nrows+2;i++){
2170 if(nofElectrons[i]>0){
2171 TVector &v = *tracks[i];
2172 v(0) = previousTrack;
2173 tracks[i]->ResizeTo(5*nofElectrons[i]+1); // shrink if necessary
2174 row[i]->Add(tracks[i]);
2183 delete [] nofElectrons;
2185 } // end of MakeSector
2188 //_____________________________________________________________________________
2192 // Initialise TPC detector after definition of geometry
2194 AliDebug(1,"*********************************************");
2197 //_____________________________________________________________________________
2198 void AliTPC::ResetDigits()
2201 // Reset number of digits and the digits array for this detector
2204 if (fDigits) fDigits->Clear();
2209 //_____________________________________________________________________________
2210 void AliTPC::SetSens(Int_t sens)
2213 //-------------------------------------------------------------
2214 // Activates/deactivates the sensitive strips at the center of
2215 // the pad row -- this is for the space-point resolution calculations
2216 //-------------------------------------------------------------
2218 //-----------------------------------------------------------------
2219 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2220 //-----------------------------------------------------------------
2226 void AliTPC::SetSide(Float_t side=0.)
2228 // choice of the TPC side
2233 //_____________________________________________________________________________
2235 void AliTPC::TransportElectron(Float_t *xyz, Int_t *index)
2238 // electron transport taking into account:
2240 // 2.ExB at the wires
2241 // 3. nonisochronity
2243 // xyz and index must be already transformed to system 1
2246 fTPCParam->Transform1to2(xyz,index); // mis-alignment applied in this step
2249 Float_t driftl=xyz[2];
2250 if(driftl<0.01) driftl=0.01;
2251 driftl=TMath::Sqrt(driftl);
2252 Float_t sigT = driftl*(fTPCParam->GetDiffT());
2253 Float_t sigL = driftl*(fTPCParam->GetDiffL());
2254 xyz[0]=gRandom->Gaus(xyz[0],sigT);
2255 xyz[1]=gRandom->Gaus(xyz[1],sigT);
2256 xyz[2]=gRandom->Gaus(xyz[2],sigL);
2260 if (fTPCParam->GetMWPCReadout()==kTRUE){
2261 Float_t dx = fTPCParam->Transform2to2NearestWire(xyz,index);
2262 xyz[1]+=dx*(fTPCParam->GetOmegaTau());
2264 //add nonisochronity (not implemented yet)
2270 //______________________________________________________________________
2271 AliTPChit::AliTPChit()
2283 //_____________________________________________________________________________
2284 AliTPChit::AliTPChit(Int_t shunt, Int_t track, Int_t *vol, Float_t *hits)
2285 :AliHit(shunt,track),
2292 // Creates a TPC hit object
2303 //________________________________________________________________________
2304 // Additional code because of the AliTPCTrackHitsV2
2306 void AliTPC::MakeBranch(Option_t *option)
2309 // Create a new branch in the current Root Tree
2310 // The branch of fHits is automatically split
2311 // MI change 14.09.2000
2313 if (fHitType<2) return;
2314 char branchname[10];
2315 sprintf(branchname,"%s2",GetName());
2317 // Get the pointer to the header
2318 const char *cH = strstr(option,"H");
2320 if (fTrackHits && fLoader->TreeH() && cH && fHitType&4) {
2321 AliDebug(1,"Making branch for Type 4 Hits");
2322 fLoader->TreeH()->Branch(branchname,"AliTPCTrackHitsV2",&fTrackHits,fBufferSize,99);
2325 // if (fTrackHitsOld && fLoader->TreeH() && cH && fHitType&2) {
2326 // AliDebug(1,"Making branch for Type 2 Hits");
2327 // AliObjectBranch * branch = new AliObjectBranch(branchname,"AliTPCTrackHits",&fTrackHitsOld,
2328 // fLoader->TreeH(),fBufferSize,99);
2329 // fLoader->TreeH()->GetListOfBranches()->Add(branch);
2333 void AliTPC::SetTreeAddress()
2335 //Sets tree address for hits
2337 if (fHits == 0x0 ) fHits = new TClonesArray("AliTPChit", 176);//skowron 20.06.03
2338 AliDetector::SetTreeAddress();
2340 if (fHitType>1) SetTreeAddress2();
2343 void AliTPC::SetTreeAddress2()
2346 // Set branch address for the TrackHits Tree
2351 char branchname[20];
2352 sprintf(branchname,"%s2",GetName());
2354 // Branch address for hit tree
2355 TTree *treeH = fLoader->TreeH();
2356 if ((treeH)&&(fHitType&4)) {
2357 branch = treeH->GetBranch(branchname);
2359 branch->SetAddress(&fTrackHits);
2360 AliDebug(1,"fHitType&4 Setting");
2363 AliDebug(1,"fHitType&4 Failed (can not find branch)");
2366 // if ((treeH)&&(fHitType&2)) {
2367 // branch = treeH->GetBranch(branchname);
2369 // branch->SetAddress(&fTrackHitsOld);
2370 // AliDebug(1,"fHitType&2 Setting");
2373 // AliDebug(1,"fHitType&2 Failed (can not find branch)");
2377 void AliTPC::FinishPrimary()
2379 if (fTrackHits &&fHitType&4) fTrackHits->FlushHitStack();
2380 // if (fTrackHitsOld && fHitType&2) fTrackHitsOld->FlushHitStack();
2384 void AliTPC::AddHit2(Int_t track, Int_t *vol, Float_t *hits)
2387 // add hit to the list
2391 int primary = gAlice->GetMCApp()->GetPrimary(track);
2392 gAlice->GetMCApp()->Particle(primary)->SetBit(kKeepBit);
2396 gAlice->GetMCApp()->FlagTrack(track);
2398 if (fTrackHits && fHitType&4)
2399 fTrackHits->AddHitKartez(vol[0],rtrack, hits[0],
2400 hits[1],hits[2],(Int_t)hits[3],hits[4]);
2401 // if (fTrackHitsOld &&fHitType&2 )
2402 // fTrackHitsOld->AddHitKartez(vol[0],rtrack, hits[0],
2403 // hits[1],hits[2],(Int_t)hits[3]);
2407 void AliTPC::ResetHits()
2409 if (fHitType&1) AliDetector::ResetHits();
2410 if (fHitType>1) ResetHits2();
2413 void AliTPC::ResetHits2()
2417 if (fTrackHits && fHitType&4) fTrackHits->Clear();
2418 // if (fTrackHitsOld && fHitType&2) fTrackHitsOld->Clear();
2422 AliHit* AliTPC::FirstHit(Int_t track)
2424 if (fHitType>1) return FirstHit2(track);
2425 return AliDetector::FirstHit(track);
2427 AliHit* AliTPC::NextHit()
2432 if (fHitType>1) return NextHit2();
2434 return AliDetector::NextHit();
2437 AliHit* AliTPC::FirstHit2(Int_t track)
2440 // Initialise the hit iterator
2441 // Return the address of the first hit for track
2442 // If track>=0 the track is read from disk
2443 // while if track<0 the first hit of the current
2444 // track is returned
2447 gAlice->GetMCApp()->ResetHits();
2448 fLoader->TreeH()->GetEvent(track);
2451 if (fTrackHits && fHitType&4) {
2452 fTrackHits->First();
2453 return fTrackHits->GetHit();
2455 // if (fTrackHitsOld && fHitType&2) {
2456 // fTrackHitsOld->First();
2457 // return fTrackHitsOld->GetHit();
2463 AliHit* AliTPC::NextHit2()
2466 //Return the next hit for the current track
2469 // if (fTrackHitsOld && fHitType&2) {
2470 // fTrackHitsOld->Next();
2471 // return fTrackHitsOld->GetHit();
2475 return fTrackHits->GetHit();
2481 void AliTPC::RemapTrackHitIDs(Int_t *map)
2486 if (!fTrackHits) return;
2488 // if (fTrackHitsOld && fHitType&2){
2489 // AliObjectArray * arr = fTrackHitsOld->fTrackHitsInfo;
2490 // for (UInt_t i=0;i<arr->GetSize();i++){
2491 // AliTrackHitsInfo * info = (AliTrackHitsInfo *)(arr->At(i));
2492 // info->fTrackID = map[info->fTrackID];
2495 // if (fTrackHitsOld && fHitType&4){
2496 if (fTrackHits && fHitType&4){
2497 TClonesArray * arr = fTrackHits->GetArray();;
2498 for (Int_t i=0;i<arr->GetEntriesFast();i++){
2499 AliTrackHitsParamV2 * info = (AliTrackHitsParamV2 *)(arr->At(i));
2500 info->SetTrackID(map[info->GetTrackID()]);
2505 Bool_t AliTPC::TrackInVolume(Int_t id,Int_t track)
2507 //return bool information - is track in given volume
2508 //load only part of the track information
2509 //return true if current track is in volume
2512 // if (fTrackHitsOld && fHitType&2) {
2513 // TBranch * br = fLoader->TreeH()->GetBranch("fTrackHitsInfo");
2514 // br->GetEvent(track);
2515 // AliObjectArray * ar = fTrackHitsOld->fTrackHitsInfo;
2516 // for (UInt_t j=0;j<ar->GetSize();j++){
2517 // if ( ((AliTrackHitsInfo*)ar->At(j))->fVolumeID==id) return kTRUE;
2521 if (fTrackHits && fHitType&4) {
2522 TBranch * br1 = fLoader->TreeH()->GetBranch("fVolumes");
2523 TBranch * br2 = fLoader->TreeH()->GetBranch("fNVolumes");
2524 br2->GetEvent(track);
2525 br1->GetEvent(track);
2526 Int_t *volumes = fTrackHits->GetVolumes();
2527 Int_t nvolumes = fTrackHits->GetNVolumes();
2528 if (!volumes && nvolumes>0) {
2529 AliWarning(Form("Problematic track\t%d\t%d",track,nvolumes));
2532 for (Int_t j=0;j<nvolumes; j++)
2533 if (volumes[j]==id) return kTRUE;
2537 TBranch * br = fLoader->TreeH()->GetBranch("fSector");
2538 br->GetEvent(track);
2539 for (Int_t j=0;j<fHits->GetEntriesFast();j++){
2540 if ( ((AliTPChit*)fHits->At(j))->fSector==id) return kTRUE;
2548 AliLoader* AliTPC::MakeLoader(const char* topfoldername)
2551 fLoader = new AliTPCLoader(GetName(),topfoldername);
2555 ////////////////////////////////////////////////////////////////////////
2556 AliTPCParam* AliTPC::LoadTPCParam(TFile *file) {
2558 // load TPC paarmeters from a given file or create new if the object
2559 // is not found there
2560 // 12/05/2003 This method should be moved to the AliTPCLoader
2561 // and one has to decide where to store the TPC parameters
2564 sprintf(paramName,"75x40_100x60_150x60");
2565 AliTPCParam *paramTPC=(AliTPCParam*)file->Get(paramName);
2567 AliDebugClass(1,Form("TPC parameters %s found.",paramName));
2569 AliWarningClass("TPC parameters not found. Create new (they may be incorrect)");
2570 //paramTPC = new AliTPCParamSR;
2571 paramTPC = AliTPCcalibDB::Instance()->GetParameters();
2572 if (!paramTPC->IsGeoRead()){
2574 // read transformation matrices for gGeoManager
2576 paramTPC->ReadGeoMatrices();
2582 // the older version of parameters can be accessed with this code.
2583 // In some cases, we have old parameters saved in the file but
2584 // digits were created with new parameters, it can be distinguish
2585 // by the name of TPC TreeD. The code here is just for the case
2586 // we would need to compare with old data, uncomment it if needed.
2588 // char paramName[50];
2589 // sprintf(paramName,"75x40_100x60");
2590 // AliTPCParam *paramTPC=(AliTPCParam*)in->Get(paramName);
2592 // cout<<"TPC parameters "<<paramName<<" found."<<endl;
2594 // sprintf(paramName,"75x40_100x60_150x60");
2595 // paramTPC=(AliTPCParam*)in->Get(paramName);
2597 // cout<<"TPC parameters "<<paramName<<" found."<<endl;
2599 // cerr<<"TPC parameters not found. Create new (they may be incorrect)."
2601 // paramTPC = new AliTPCParamSR;