1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
18 ///////////////////////////////////////////////////////////////////////////////
20 // Time Projection Chamber //
21 // This class contains the basic functions for the Time Projection Chamber //
22 // detector. Functions specific to one particular geometry are //
23 // contained in the derived classes //
27 <img src="picts/AliTPCClass.gif">
32 ///////////////////////////////////////////////////////////////////////////////
36 #include <Riostream.h>
40 #include <TGeometry.h>
41 #include <TInterpreter.h>
46 #include <TObjectTable.h>
47 #include <TParticle.h>
53 #include <TVirtualMC.h>
56 #include <TStopwatch.h>
58 #include "AliDigits.h"
60 #include "AliPoints.h"
62 #include "AliRunLoader.h"
63 #include "AliSimDigits.h"
66 #include "AliTPCDigitsArray.h"
67 #include "AliTPCLoader.h"
68 #include "AliTPCPRF2D.h"
69 #include "AliTPCParamSR.h"
70 #include "AliTPCRF1D.h"
71 //#include "AliTPCTrackHits.h"
72 #include "AliTPCTrackHitsV2.h"
73 #include "AliTrackReference.h"
76 #include "AliTPCDigitizer.h"
77 #include "AliTPCBuffer.h"
78 #include "AliTPCDDLRawData.h"
80 #include "AliRawReader.h"
81 #include "AliTPCRawStream.h"
84 //_____________________________________________________________________________
85 AliTPC::AliTPC():AliDetector(),
102 // Default constructor
106 // fTrackHitsOld = 0;
107 #if ROOT_VERSION_CODE >= ROOT_VERSION(4,0,1)
108 fHitType = 4; // ROOT containers
110 fHitType = 2; //default CONTAINERS - based on ROOT structure
114 //_____________________________________________________________________________
115 AliTPC::AliTPC(const char *name, const char *title)
116 : AliDetector(name,title),
132 // Standard constructor
136 // Initialise arrays of hits and digits
137 fHits = new TClonesArray("AliTPChit", 176);
138 gAlice->GetMCApp()->AddHitList(fHits);
140 fTrackHits = new AliTPCTrackHitsV2;
141 fTrackHits->SetHitPrecision(0.002);
142 fTrackHits->SetStepPrecision(0.003);
143 fTrackHits->SetMaxDistance(100);
145 //fTrackHitsOld = new AliTPCTrackHits; //MI - 13.09.2000
146 //fTrackHitsOld->SetHitPrecision(0.002);
147 //fTrackHitsOld->SetStepPrecision(0.003);
148 //fTrackHitsOld->SetMaxDistance(100);
151 #if ROOT_VERSION_CODE >= ROOT_VERSION(4,0,1)
152 fHitType = 4; // ROOT containers
162 // Initialise color attributes
163 //PH SetMarkerColor(kYellow);
166 // Set TPC parameters
170 if (!strcmp(title,"Default")) {
171 fTPCParam = new AliTPCParamSR;
173 AliWarning("In Config.C you must set non-default parameters.");
178 //_____________________________________________________________________________
189 delete fTrackHits; //MI 15.09.2000
190 // delete fTrackHitsOld; //MI 10.12.2001
193 delete [] fNoiseTable;
194 delete [] fActiveSectors;
198 //_____________________________________________________________________________
199 void AliTPC::AddHit(Int_t track, Int_t *vol, Float_t *hits)
202 // Add a hit to the list
205 TClonesArray &lhits = *fHits;
206 new(lhits[fNhits++]) AliTPChit(fIshunt,track,vol,hits);
209 AddHit2(track,vol,hits);
212 //_____________________________________________________________________________
213 void AliTPC::BuildGeometry()
217 // Build TPC ROOT TNode geometry for the event display
222 const int kColorTPC=19;
223 char name[5], title[25];
224 const Double_t kDegrad=TMath::Pi()/180;
225 const Double_t kRaddeg=180./TMath::Pi();
228 Float_t innerOpenAngle = fTPCParam->GetInnerAngle();
229 Float_t outerOpenAngle = fTPCParam->GetOuterAngle();
231 Float_t innerAngleShift = fTPCParam->GetInnerAngleShift();
232 Float_t outerAngleShift = fTPCParam->GetOuterAngleShift();
234 Int_t nLo = fTPCParam->GetNInnerSector()/2;
235 Int_t nHi = fTPCParam->GetNOuterSector()/2;
237 const Double_t kloAng = (Double_t)TMath::Nint(innerOpenAngle*kRaddeg);
238 const Double_t khiAng = (Double_t)TMath::Nint(outerOpenAngle*kRaddeg);
239 const Double_t kloAngSh = (Double_t)TMath::Nint(innerAngleShift*kRaddeg);
240 const Double_t khiAngSh = (Double_t)TMath::Nint(outerAngleShift*kRaddeg);
243 const Double_t kloCorr = 1/TMath::Cos(0.5*kloAng*kDegrad);
244 const Double_t khiCorr = 1/TMath::Cos(0.5*khiAng*kDegrad);
250 // Get ALICE top node
253 nTop=gAlice->GetGeometry()->GetNode("alice");
257 rl = fTPCParam->GetInnerRadiusLow();
258 ru = fTPCParam->GetInnerRadiusUp();
262 sprintf(name,"LS%2.2d",i);
264 sprintf(title,"TPC low sector %3d",i);
267 tubs = new TTUBS(name,title,"void",rl*kloCorr,ru*kloCorr,250.,
268 kloAng*(i-0.5)+kloAngSh,kloAng*(i+0.5)+kloAngSh);
269 tubs->SetNumberOfDivisions(1);
271 nNode = new TNode(name,title,name,0,0,0,"");
272 nNode->SetLineColor(kColorTPC);
278 rl = fTPCParam->GetOuterRadiusLow();
279 ru = fTPCParam->GetOuterRadiusUp();
282 sprintf(name,"US%2.2d",i);
284 sprintf(title,"TPC upper sector %d",i);
286 tubs = new TTUBS(name,title,"void",rl*khiCorr,ru*khiCorr,250,
287 khiAng*(i-0.5)+khiAngSh,khiAng*(i+0.5)+khiAngSh);
288 tubs->SetNumberOfDivisions(1);
290 nNode = new TNode(name,title,name,0,0,0,"");
291 nNode->SetLineColor(kColorTPC);
297 //_____________________________________________________________________________
298 void AliTPC::CreateMaterials()
300 //-----------------------------------------------
301 // Create Materials for for TPC simulations
302 //-----------------------------------------------
304 //-----------------------------------------------------------------
305 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
306 //-----------------------------------------------------------------
308 Int_t iSXFLD=gAlice->Field()->Integ();
309 Float_t sXMGMX=gAlice->Field()->Max();
311 Float_t amat[5]; // atomic numbers
312 Float_t zmat[5]; // z
313 Float_t wmat[5]; // proportions
319 //***************** Gases *************************
322 //--------------------------------------------------------------
323 // gases - air and CO2
324 //--------------------------------------------------------------
340 AliMixture(10,"CO2",amat,zmat,density,2,wmat);
355 AliMixture(11,"Air",amat,zmat,density,2,wmat);
357 //----------------------------------------------------------------
359 //----------------------------------------------------------------
362 // Drift gases 1 - nonsensitive, 2 - sensitive
363 // Ne-CO2-N (85-10-5)
382 AliMixture(12,"Ne-CO2-N-1",amat,zmat,density,4,wmat);
383 AliMixture(13,"Ne-CO2-N-2",amat,zmat,density,4,wmat);
385 //----------------------------------------------------------------------
387 //----------------------------------------------------------------------
409 AliMixture(14,"Kevlar",amat,zmat,density,-4,wmat);
430 AliMixture(15,"NOMEX",amat,zmat,density,-4,wmat);
448 AliMixture(16,"Makrolon",amat,zmat,density,-3,wmat);
466 AliMixture(17, "Tedlar",amat,zmat,density,-3,wmat);
484 AliMixture(18, "Mylar",amat,zmat,density,-3,wmat);
485 // material for "prepregs"
486 // Epoxy - C14 H20 O3
489 // prepreg1 60% C-fiber, 40% epoxy (vol)
504 AliMixture(19, "Prepreg1",amat,zmat,density,3,wmat);
506 //prepreg2 60% glass-fiber, 40% epoxy
525 AliMixture(20, "Prepreg2",amat,zmat,density,4,wmat);
527 //prepreg3 50% glass-fiber, 50% epoxy
546 AliMixture(21, "Prepreg3",amat,zmat,density,4,wmat);
548 // G10 60% SiO2 40% epoxy
567 AliMixture(22, "G10",amat,zmat,density,4,wmat);
576 AliMaterial(23,"Al",amat[0],zmat[0],density,999.,999.);
578 // Si (for electronics
585 AliMaterial(24,"Si",amat[0],zmat[0],density,999.,999.);
594 AliMaterial(25,"Cu",amat[0],zmat[0],density,999.,999.);
596 // Epoxy - C14 H20 O3
612 AliMixture(26,"Epoxy",amat,zmat,density,-3,wmat);
630 AliMixture(27,"Plexiglas",amat,zmat,density,-3,wmat);
638 AliMaterial(28,"C",amat[0],zmat[0],density,999.,999.);
640 // Fe (steel for the inner heat screen)
648 AliMaterial(29,"Fe",amat[0],zmat[0],density,999.,999.);
650 //----------------------------------------------------------
651 // tracking media for gases
652 //----------------------------------------------------------
654 AliMedium(0, "Air", 11, 0, iSXFLD, sXMGMX, 10., 999., .1, .01, .1);
655 AliMedium(1, "Ne-CO2-N-1", 12, 0, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
656 AliMedium(2, "Ne-CO2-N-2", 13, 1, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
657 AliMedium(3,"CO2",10,0, iSXFLD, sXMGMX, 10., 999.,.1, .001, .001);
658 AliMedium(20, "Ne-CO2-N-3", 13, 1, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
659 //-----------------------------------------------------------
660 // tracking media for solids
661 //-----------------------------------------------------------
663 AliMedium(4,"Al",23,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
664 AliMedium(5,"Kevlar",14,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
665 AliMedium(6,"Nomex",15,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
666 AliMedium(7,"Makrolon",16,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
667 AliMedium(8,"Mylar",18,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
668 AliMedium(9,"Tedlar",17,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
670 AliMedium(10,"Prepreg1",19,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
671 AliMedium(11,"Prepreg2",20,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
672 AliMedium(12,"Prepreg3",21,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
673 AliMedium(13,"Epoxy",26,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
675 AliMedium(14,"Cu",25,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
676 AliMedium(15,"Si",24,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
677 AliMedium(16,"G10",22,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
678 AliMedium(17,"Plexiglas",27,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
679 AliMedium(18,"Steel",29,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
683 void AliTPC::GenerNoise(Int_t tablesize)
686 //Generate table with noise
693 if (fNoiseTable) delete[] fNoiseTable;
694 fNoiseTable = new Float_t[tablesize];
695 fNoiseDepth = tablesize;
696 fCurrentNoise =0; //!index of the noise in the noise table
698 Float_t norm = fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac();
699 for (Int_t i=0;i<tablesize;i++) fNoiseTable[i]= gRandom->Gaus(0,norm);
702 Float_t AliTPC::GetNoise()
704 // get noise from table
705 // if ((fCurrentNoise%10)==0)
706 // fCurrentNoise= gRandom->Rndm()*fNoiseDepth;
707 if (fCurrentNoise>=fNoiseDepth) fCurrentNoise=0;
708 return fNoiseTable[fCurrentNoise++];
709 //gRandom->Gaus(0, fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac());
713 Bool_t AliTPC::IsSectorActive(Int_t sec) const
716 // check if the sector is active
717 if (!fActiveSectors) return kTRUE;
718 else return fActiveSectors[sec];
721 void AliTPC::SetActiveSectors(Int_t * sectors, Int_t n)
723 // activate interesting sectors
724 SetTreeAddress();//just for security
725 if (fActiveSectors) delete [] fActiveSectors;
726 fActiveSectors = new Bool_t[fTPCParam->GetNSector()];
727 for (Int_t i=0;i<fTPCParam->GetNSector();i++) fActiveSectors[i]=kFALSE;
728 for (Int_t i=0;i<n;i++)
729 if ((sectors[i]>=0) && sectors[i]<fTPCParam->GetNSector()) fActiveSectors[sectors[i]]=kTRUE;
733 void AliTPC::SetActiveSectors(Int_t flag)
736 // activate sectors which were hitted by tracks
738 SetTreeAddress();//just for security
739 if (fHitType==0) return; // if Clones hit - not short volume ID information
740 if (fActiveSectors) delete [] fActiveSectors;
741 fActiveSectors = new Bool_t[fTPCParam->GetNSector()];
743 for (Int_t i=0;i<fTPCParam->GetNSector();i++) fActiveSectors[i]=kTRUE;
746 for (Int_t i=0;i<fTPCParam->GetNSector();i++) fActiveSectors[i]=kFALSE;
750 AliFatal("Can not find TreeH in folder");
753 if (fHitType>1) branch = TreeH()->GetBranch("TPC2");
754 else branch = TreeH()->GetBranch("TPC");
755 Stat_t ntracks = TreeH()->GetEntries();
756 // loop over all hits
757 AliDebug(1,Form("Got %d tracks",ntracks));
759 for(Int_t track=0;track<ntracks;track++) {
762 if (fTrackHits && fHitType&4) {
763 TBranch * br1 = TreeH()->GetBranch("fVolumes");
764 TBranch * br2 = TreeH()->GetBranch("fNVolumes");
765 br1->GetEvent(track);
766 br2->GetEvent(track);
767 Int_t *volumes = fTrackHits->GetVolumes();
768 for (Int_t j=0;j<fTrackHits->GetNVolumes(); j++)
769 fActiveSectors[volumes[j]]=kTRUE;
773 // if (fTrackHitsOld && fHitType&2) {
774 // TBranch * br = TreeH()->GetBranch("fTrackHitsInfo");
775 // br->GetEvent(track);
776 // AliObjectArray * ar = fTrackHitsOld->fTrackHitsInfo;
777 // for (UInt_t j=0;j<ar->GetSize();j++){
778 // fActiveSectors[((AliTrackHitsInfo*)ar->At(j))->fVolumeID] =kTRUE;
787 //_____________________________________________________________________________
788 void AliTPC::Digits2Raw()
790 // convert digits of the current event to raw data
792 static const Int_t kThreshold = 0;
794 fLoader->LoadDigits();
795 TTree* digits = fLoader->TreeD();
797 AliError("No digits tree");
802 AliSimDigits* digrow = &digarr;
803 digits->GetBranch("Segment")->SetAddress(&digrow);
805 const char* fileName = "AliTPCDDL.dat";
806 AliTPCBuffer* buffer = new AliTPCBuffer(fileName);
810 // 2: txt files with digits
811 //BE CAREFUL, verbose level 2 MUST be used only for debugging and
812 //it is highly suggested to use this mode only for debugging digits files
813 //reasonably small, because otherwise the size of the txt files can reach
814 //quickly several MB wasting time and disk space.
815 buffer->SetVerbose(0);
817 Int_t nEntries = Int_t(digits->GetEntries());
818 Int_t previousSector = -1;
820 for (Int_t i = 0; i < nEntries; i++) {
823 fTPCParam->AdjustSectorRow(digarr.GetID(), sector, row);
824 if(previousSector != sector) {
826 previousSector = sector;
829 if (sector < 36) { //inner sector [0;35]
831 //the whole row is written into the output file
832 buffer->WriteRowBinary(kThreshold, digrow, 0, 0, 0,
833 sector, subSector, row);
835 //only the pads in the range [37;48] are written into the output file
836 buffer->WriteRowBinary(kThreshold, digrow, 37, 48, 1,
837 sector, subSector, row);
839 //only the pads outside the range [37;48] are written into the output file
840 buffer->WriteRowBinary(kThreshold, digrow, 37, 48, 2,
841 sector, subSector, row);
844 } else { //outer sector [36;71]
845 if (row == 54) subSector = 2;
846 if ((row != 27) && (row != 76)) {
847 buffer->WriteRowBinary(kThreshold, digrow, 0, 0, 0,
848 sector, subSector, row);
849 } else if (row == 27) {
850 //only the pads outside the range [43;46] are written into the output file
851 buffer->WriteRowBinary(kThreshold, digrow, 43, 46, 2,
852 sector, subSector, row);
854 //only the pads in the range [43;46] are written into the output file
855 buffer->WriteRowBinary(kThreshold, digrow, 43, 46, 1,
856 sector, subSector, row);
857 } else if (row == 76) {
858 //only the pads outside the range [33;88] are written into the output file
859 buffer->WriteRowBinary(kThreshold, digrow, 33, 88, 2,
860 sector, subSector, row);
862 //only the pads in the range [33;88] are written into the output file
863 buffer->WriteRowBinary(kThreshold, digrow, 33, 88, 1,
864 sector, subSector, row);
870 fLoader->UnloadDigits();
872 AliTPCDDLRawData rawWriter;
873 rawWriter.SetVerbose(0);
875 rawWriter.RawData(fileName);
876 gSystem->Unlink(fileName);
881 //_____________________________________________________________________________
882 Bool_t AliTPC::Raw2SDigits(AliRawReader* rawReader){
883 // Converts the TPC raw data into summable digits
884 // The method is used for merging simulated and
886 if (fLoader->TreeS() == 0x0 ) {
887 fLoader->MakeTree("S");
890 if(fDefaults == 0) SetDefaults(); // check if the parameters are set
892 //setup TPCDigitsArray
893 if(GetDigitsArray()) delete GetDigitsArray();
895 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
896 arr->SetClass("AliSimDigits");
897 arr->Setup(fTPCParam);
898 arr->MakeTree(fLoader->TreeS());
902 // set zero suppression to "0"
903 fTPCParam->SetZeroSup(0);
906 const Int_t kmaxTime = fTPCParam->GetMaxTBin();
907 const Int_t kNIS = fTPCParam->GetNInnerSector();
908 const Int_t kNOS = fTPCParam->GetNOuterSector();
909 const Int_t kNS = kNIS + kNOS;
911 Short_t** allBins = NULL; //array which contains the data for one sector
913 for(Int_t iSector = 0; iSector < kNS; iSector++) {
915 Int_t nRows = fTPCParam->GetNRow(iSector);
916 Int_t nDDLs = 0, indexDDL = 0;
917 if (iSector < kNIS) {
919 indexDDL = iSector * 2;
923 indexDDL = (iSector-kNIS) * 4 + kNIS * 2;
926 // Loas the raw data for corresponding DDLs
928 AliTPCRawStream input(rawReader);
929 rawReader->Select("TPC",indexDDL,indexDDL+nDDLs-1);
931 // Alocate and init the array with the sector data
932 allBins = new Short_t*[nRows];
933 for (Int_t iRow = 0; iRow < nRows; iRow++) {
934 Int_t maxPad = fTPCParam->GetNPads(iSector,iRow);
935 Int_t maxBin = kmaxTime*maxPad;
936 allBins[iRow] = new Short_t[maxBin];
937 memset(allBins[iRow],0,sizeof(Short_t)*maxBin);
940 // Begin loop over altro data
941 while (input.Next()) {
943 if (input.GetSector() != iSector)
944 AliFatal(Form("Sector index mismatch ! Expected (%d), but got (%d) !",iSector,input.GetSector()));
946 Int_t iRow = input.GetRow();
947 if (iRow < 0 || iRow >= nRows)
948 AliFatal(Form("Pad-row index (%d) outside the range (%d -> %d) !",
950 Int_t iPad = input.GetPad();
952 Int_t maxPad = fTPCParam->GetNPads(iSector,iRow);
954 if (iPad < 0 || iPad >= maxPad)
955 AliFatal(Form("Pad index (%d) outside the range (%d -> %d) !",
956 iPad, 0, maxPad -1));
958 Int_t iTimeBin = input.GetTime();
959 if ( iTimeBin < 0 || iTimeBin >= kmaxTime)
960 AliFatal(Form("Timebin index (%d) outside the range (%d -> %d) !",
961 iTimeBin, 0, kmaxTime -1));
963 Int_t maxBin = kmaxTime*maxPad;
965 if (((iPad*kmaxTime+iTimeBin) >= maxBin) ||
966 ((iPad*kmaxTime+iTimeBin) < 0))
967 AliFatal(Form("Index outside the allowed range"
968 " Sector=%d Row=%d Pad=%d Timebin=%d"
969 " (Max.index=%d)",iSector,iRow,iPad,iTimeBin,maxBin));
971 allBins[iRow][iPad*kmaxTime+iTimeBin] = input.GetSignal();
973 } // End loop over altro data
975 // Now fill the digits array
976 if (fDigitsArray->GetTree()==0) {
977 AliFatal("Tree not set in fDigitsArray");
980 for (Int_t iRow = 0; iRow < nRows; iRow++) {
981 AliDigits * dig = fDigitsArray->CreateRow(iSector,iRow);
983 Int_t maxPad = fTPCParam->GetNPads(iSector,iRow);
984 for(Int_t iPad = 0; iPad < maxPad; iPad++) {
985 for(Int_t iTimeBin = 0; iTimeBin < kmaxTime; iTimeBin++) {
986 Short_t q = allBins[iRow][iPad*kmaxTime + iTimeBin];
987 if (q <= 0) continue;
989 dig->SetDigitFast((Short_t)q,iTimeBin,iPad);
992 fDigitsArray->StoreRow(iSector,iRow);
993 Int_t ndig = dig->GetDigitSize();
996 Form("*** Sector, row, compressed digits %d %d %d ***\n",
999 fDigitsArray->ClearRow(iSector,iRow);
1001 } // end of the sector digitization
1003 for (Int_t iRow = 0; iRow < nRows; iRow++)
1004 delete [] allBins[iRow];
1010 fLoader->WriteSDigits("OVERWRITE");
1012 if(GetDigitsArray()) delete GetDigitsArray();
1013 SetDigitsArray(0x0);
1018 //______________________________________________________________________
1019 AliDigitizer* AliTPC::CreateDigitizer(AliRunDigitizer* manager) const
1021 return new AliTPCDigitizer(manager);
1024 void AliTPC::SDigits2Digits2(Int_t /*eventnumber*/)
1026 //create digits from summable digits
1027 GenerNoise(500000); //create teble with noise
1029 //conect tree with sSDigits
1030 TTree *t = fLoader->TreeS();
1033 fLoader->LoadSDigits("READ");
1034 t = fLoader->TreeS();
1036 AliError("Can not get input TreeS");
1041 if (fLoader->TreeD() == 0x0) fLoader->MakeTree("D");
1043 AliSimDigits digarr, *dummy=&digarr;
1044 TBranch* sdb = t->GetBranch("Segment");
1046 AliError("Can not find branch with segments in TreeS.");
1050 sdb->SetAddress(&dummy);
1052 Stat_t nentries = t->GetEntries();
1054 // set zero suppression
1056 fTPCParam->SetZeroSup(2);
1058 // get zero suppression
1060 Int_t zerosup = fTPCParam->GetZeroSup();
1062 //make tree with digits
1064 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1065 arr->SetClass("AliSimDigits");
1066 arr->Setup(fTPCParam);
1067 arr->MakeTree(fLoader->TreeD());
1069 AliTPCParam * par = fTPCParam;
1071 //Loop over segments of the TPC
1073 for (Int_t n=0; n<nentries; n++) {
1076 if (!par->AdjustSectorRow(digarr.GetID(),sec,row)) {
1077 AliWarning(Form("Invalid segment ID ! %d",digarr.GetID()));
1080 if (!IsSectorActive(sec)) continue;
1082 AliSimDigits * digrow =(AliSimDigits*) arr->CreateRow(sec,row);
1083 Int_t nrows = digrow->GetNRows();
1084 Int_t ncols = digrow->GetNCols();
1086 digrow->ExpandBuffer();
1087 digarr.ExpandBuffer();
1088 digrow->ExpandTrackBuffer();
1089 digarr.ExpandTrackBuffer();
1092 Short_t * pamp0 = digarr.GetDigits();
1093 Int_t * ptracks0 = digarr.GetTracks();
1094 Short_t * pamp1 = digrow->GetDigits();
1095 Int_t * ptracks1 = digrow->GetTracks();
1096 Int_t nelems =nrows*ncols;
1097 Int_t saturation = fTPCParam->GetADCSat() - 1;
1098 //use internal structure of the AliDigits - for speed reason
1099 //if you cahnge implementation
1100 //of the Alidigits - it must be rewriten -
1101 for (Int_t i= 0; i<nelems; i++){
1102 Float_t q = TMath::Nint(Float_t(*pamp0)/16.+GetNoise());
1104 if (q>saturation) q=saturation;
1107 ptracks1[0]=ptracks0[0];
1108 ptracks1[nelems]=ptracks0[nelems];
1109 ptracks1[2*nelems]=ptracks0[2*nelems];
1117 arr->StoreRow(sec,row);
1118 arr->ClearRow(sec,row);
1123 fLoader->WriteDigits("OVERWRITE");
1127 //__________________________________________________________________
1128 void AliTPC::SetDefaults(){
1130 // setting the defaults
1133 // Set response functions
1136 AliRunLoader* rl = (AliRunLoader*)fLoader->GetEventFolder()->FindObject(AliRunLoader::GetRunLoaderName());
1138 AliTPCParamSR *param=(AliTPCParamSR*)gDirectory->Get("75x40_100x60");
1140 AliInfo("You are using 2 pad-length geom hits with 3 pad-lenght geom digits...");
1142 param = new AliTPCParamSR();
1145 param=(AliTPCParamSR*)gDirectory->Get("75x40_100x60_150x60");
1148 AliFatal("No TPC parameters found");
1152 AliTPCPRF2D * prfinner = new AliTPCPRF2D;
1153 AliTPCPRF2D * prfouter1 = new AliTPCPRF2D;
1154 AliTPCPRF2D * prfouter2 = new AliTPCPRF2D;
1155 AliTPCRF1D * rf = new AliTPCRF1D(kTRUE);
1156 rf->SetGauss(param->GetZSigma(),param->GetZWidth(),1.);
1157 rf->SetOffset(3*param->GetZSigma());
1160 TDirectory *savedir=gDirectory;
1161 TFile *f=TFile::Open("$ALICE_ROOT/TPC/AliTPCprf2d.root");
1163 AliFatal("Can't open $ALICE_ROOT/TPC/AliTPCprf2d.root !");
1166 prfinner->Read("prf_07504_Gati_056068_d02");
1167 //PH Set different names
1168 s=prfinner->GetGRF()->GetName();
1170 prfinner->GetGRF()->SetName(s.Data());
1172 prfouter1->Read("prf_10006_Gati_047051_d03");
1173 s=prfouter1->GetGRF()->GetName();
1175 prfouter1->GetGRF()->SetName(s.Data());
1177 prfouter2->Read("prf_15006_Gati_047051_d03");
1178 s=prfouter2->GetGRF()->GetName();
1180 prfouter2->GetGRF()->SetName(s.Data());
1185 param->SetInnerPRF(prfinner);
1186 param->SetOuter1PRF(prfouter1);
1187 param->SetOuter2PRF(prfouter2);
1188 param->SetTimeRF(rf);
1198 //__________________________________________________________________
1199 void AliTPC::Hits2Digits()
1202 // creates digits from hits
1204 if (!fTPCParam->IsGeoRead()){
1206 // read transformation matrices for gGeoManager
1208 fTPCParam->ReadGeoMatrices();
1211 fLoader->LoadHits("read");
1212 fLoader->LoadDigits("recreate");
1213 AliRunLoader* runLoader = fLoader->GetRunLoader();
1215 for (Int_t iEvent = 0; iEvent < runLoader->GetNumberOfEvents(); iEvent++) {
1216 runLoader->GetEvent(iEvent);
1218 Hits2Digits(iEvent);
1221 fLoader->UnloadHits();
1222 fLoader->UnloadDigits();
1224 //__________________________________________________________________
1225 void AliTPC::Hits2Digits(Int_t eventnumber)
1227 //----------------------------------------------------
1228 // Loop over all sectors for a single event
1229 //----------------------------------------------------
1230 AliRunLoader* rl = (AliRunLoader*)fLoader->GetEventFolder()->FindObject(AliRunLoader::GetRunLoaderName());
1231 rl->GetEvent(eventnumber);
1232 if (fLoader->TreeH() == 0x0) {
1233 if(fLoader->LoadHits()) {
1234 AliError("Can not load hits.");
1239 if (fLoader->TreeD() == 0x0 ) {
1240 fLoader->MakeTree("D");
1241 if (fLoader->TreeD() == 0x0 ) {
1242 AliError("Can not get TreeD");
1247 if(fDefaults == 0) SetDefaults(); // check if the parameters are set
1248 GenerNoise(500000); //create teble with noise
1250 //setup TPCDigitsArray
1252 if(GetDigitsArray()) delete GetDigitsArray();
1254 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1255 arr->SetClass("AliSimDigits");
1256 arr->Setup(fTPCParam);
1258 arr->MakeTree(fLoader->TreeD());
1259 SetDigitsArray(arr);
1261 fDigitsSwitch=0; // standard digits
1263 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++)
1264 if (IsSectorActive(isec)) {
1265 AliDebug(1,Form("Hits2Digits","Sector %d is active.",isec));
1266 Hits2DigitsSector(isec);
1269 AliDebug(1,Form("Hits2Digits","Sector %d is NOT active.",isec));
1272 fLoader->WriteDigits("OVERWRITE");
1274 //this line prevents the crash in the similar one
1275 //on the beginning of this method
1276 //destructor attempts to reset the tree, which is deleted by the loader
1277 //need to be redesign
1278 if(GetDigitsArray()) delete GetDigitsArray();
1279 SetDigitsArray(0x0);
1283 //__________________________________________________________________
1284 void AliTPC::Hits2SDigits2(Int_t eventnumber)
1287 //-----------------------------------------------------------
1288 // summable digits - 16 bit "ADC", no noise, no saturation
1289 //-----------------------------------------------------------
1291 //----------------------------------------------------
1292 // Loop over all sectors for a single event
1293 //----------------------------------------------------
1295 AliRunLoader* rl = fLoader->GetRunLoader();
1297 rl->GetEvent(eventnumber);
1298 if (fLoader->TreeH() == 0x0) {
1299 if(fLoader->LoadHits()) {
1300 AliError("Can not load hits.");
1307 if (fLoader->TreeS() == 0x0 ) {
1308 fLoader->MakeTree("S");
1311 if(fDefaults == 0) SetDefaults();
1313 GenerNoise(500000); //create table with noise
1314 //setup TPCDigitsArray
1316 if(GetDigitsArray()) delete GetDigitsArray();
1319 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1320 arr->SetClass("AliSimDigits");
1321 arr->Setup(fTPCParam);
1322 arr->MakeTree(fLoader->TreeS());
1324 SetDigitsArray(arr);
1326 fDigitsSwitch=1; // summable digits
1328 // set zero suppression to "0"
1330 fTPCParam->SetZeroSup(0);
1332 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++)
1333 if (IsSectorActive(isec)) {
1334 Hits2DigitsSector(isec);
1337 fLoader->WriteSDigits("OVERWRITE");
1339 //this line prevents the crash in the similar one
1340 //on the beginning of this method
1341 //destructor attempts to reset the tree, which is deleted by the loader
1342 //need to be redesign
1343 if(GetDigitsArray()) delete GetDigitsArray();
1344 SetDigitsArray(0x0);
1346 //__________________________________________________________________
1348 void AliTPC::Hits2SDigits()
1351 //-----------------------------------------------------------
1352 // summable digits - 16 bit "ADC", no noise, no saturation
1353 //-----------------------------------------------------------
1355 if (!fTPCParam->IsGeoRead()){
1357 // read transformation matrices for gGeoManager
1359 fTPCParam->ReadGeoMatrices();
1362 fLoader->LoadHits("read");
1363 fLoader->LoadSDigits("recreate");
1364 AliRunLoader* runLoader = fLoader->GetRunLoader();
1366 for (Int_t iEvent = 0; iEvent < runLoader->GetNumberOfEvents(); iEvent++) {
1367 runLoader->GetEvent(iEvent);
1370 Hits2SDigits2(iEvent);
1373 fLoader->UnloadHits();
1374 fLoader->UnloadSDigits();
1376 //_____________________________________________________________________________
1378 void AliTPC::Hits2DigitsSector(Int_t isec)
1380 //-------------------------------------------------------------------
1381 // TPC conversion from hits to digits.
1382 //-------------------------------------------------------------------
1384 //-----------------------------------------------------------------
1385 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1386 //-----------------------------------------------------------------
1388 //-------------------------------------------------------
1389 // Get the access to the track hits
1390 //-------------------------------------------------------
1392 // check if the parameters are set - important if one calls this method
1393 // directly, not from the Hits2Digits
1395 if(fDefaults == 0) SetDefaults();
1397 TTree *tH = TreeH(); // pointer to the hits tree
1399 AliFatal("Can not find TreeH in folder");
1403 Stat_t ntracks = tH->GetEntries();
1407 //-------------------------------------------
1408 // Only if there are any tracks...
1409 //-------------------------------------------
1413 Int_t nrows =fTPCParam->GetNRow(isec);
1415 row= new TObjArray* [nrows+2]; // 2 extra rows for cross talk
1417 MakeSector(isec,nrows,tH,ntracks,row);
1419 //--------------------------------------------------------
1420 // Digitize this sector, row by row
1421 // row[i] is the pointer to the TObjArray of TVectors,
1422 // each one containing electrons accepted on this
1423 // row, assigned into tracks
1424 //--------------------------------------------------------
1428 if (fDigitsArray->GetTree()==0) {
1429 AliFatal("Tree not set in fDigitsArray");
1432 for (i=0;i<nrows;i++){
1434 AliDigits * dig = fDigitsArray->CreateRow(isec,i);
1436 DigitizeRow(i,isec,row);
1438 fDigitsArray->StoreRow(isec,i);
1440 Int_t ndig = dig->GetDigitSize();
1443 Form("*** Sector, row, compressed digits %d %d %d ***\n",
1446 fDigitsArray->ClearRow(isec,i);
1449 } // end of the sector digitization
1451 for(i=0;i<nrows+2;i++){
1456 delete [] row; // delete the array of pointers to TObjArray-s
1460 } // end of Hits2DigitsSector
1463 //_____________________________________________________________________________
1464 void AliTPC::DigitizeRow(Int_t irow,Int_t isec,TObjArray **rows)
1466 //-----------------------------------------------------------
1467 // Single row digitization, coupling from the neighbouring
1468 // rows taken into account
1469 //-----------------------------------------------------------
1471 //-----------------------------------------------------------------
1472 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1473 // Modified: Marian Ivanov GSI Darmstadt, m.ivanov@gsi.de
1474 //-----------------------------------------------------------------
1476 Float_t zerosup = fTPCParam->GetZeroSup();
1478 fCurrentIndex[1]= isec;
1481 Int_t nofPads = fTPCParam->GetNPads(isec,irow);
1482 Int_t nofTbins = fTPCParam->GetMaxTBin();
1483 Int_t indexRange[4];
1485 // Integrated signal for this row
1486 // and a single track signal
1489 TMatrixF *m1 = new TMatrixF(0,nofPads,0,nofTbins); // integrated
1490 TMatrixF *m2 = new TMatrixF(0,nofPads,0,nofTbins); // single
1492 TMatrixF &total = *m1;
1494 // Array of pointers to the label-signal list
1496 Int_t nofDigits = nofPads*nofTbins; // number of digits for this row
1497 Float_t **pList = new Float_t* [nofDigits];
1501 for(lp=0;lp<nofDigits;lp++)pList[lp]=0; // set all pointers to NULL
1507 for (Int_t row= row1;row<=row2;row++){
1508 Int_t nTracks= rows[row]->GetEntries();
1509 for (i1=0;i1<nTracks;i1++){
1510 fCurrentIndex[2]= row;
1511 fCurrentIndex[3]=irow+1;
1513 m2->Zero(); // clear single track signal matrix
1514 Float_t trackLabel = GetSignal(rows[row],i1,m2,m1,indexRange);
1515 GetList(trackLabel,nofPads,m2,indexRange,pList);
1517 else GetSignal(rows[row],i1,0,m1,indexRange);
1523 AliDigits *dig = fDigitsArray->GetRow(isec,irow);
1525 Float_t fzerosup = zerosup+0.5;
1526 for(Int_t it=0;it<nofTbins;it++){
1527 for(Int_t ip=0;ip<nofPads;ip++){
1529 Float_t q=total(ip,it);
1530 if(fDigitsSwitch == 0){
1532 if(q <=fzerosup) continue; // do not fill zeros
1534 if(q >= fTPCParam->GetADCSat()) q = fTPCParam->GetADCSat() - 1; // saturation
1539 if(q <= 0.) continue; // do not fill zeros
1540 if(q>2000.) q=2000.;
1546 // "real" signal or electronic noise (list = -1)?
1549 for(Int_t j1=0;j1<3;j1++){
1550 tracks[j1] = (pList[gi]) ?(Int_t)(*(pList[gi]+j1)) : -2;
1555 <A NAME="AliDigits"></A>
1556 using of AliDigits object
1559 dig->SetDigitFast((Short_t)q,it,ip);
1560 if (fDigitsArray->IsSimulated()) {
1561 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[0],it,ip,0);
1562 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[1],it,ip,1);
1563 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[2],it,ip,2);
1566 } // end of loop over time buckets
1567 } // end of lop over pads
1570 // This row has been digitized, delete nonused stuff
1573 for(lp=0;lp<nofDigits;lp++){
1574 if(pList[lp]) delete [] pList[lp];
1582 } // end of DigitizeRow
1584 //_____________________________________________________________________________
1586 Float_t AliTPC::GetSignal(TObjArray *p1, Int_t ntr,
1587 TMatrixF *m1, TMatrixF *m2,Int_t *indexRange)
1590 //---------------------------------------------------------------
1591 // Calculates 2-D signal (pad,time) for a single track,
1592 // returns a pointer to the signal matrix and the track label
1593 // No digitization is performed at this level!!!
1594 //---------------------------------------------------------------
1596 //-----------------------------------------------------------------
1597 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1598 // Modified: Marian Ivanov
1599 //-----------------------------------------------------------------
1603 tv = (TVector*)p1->At(ntr); // pointer to a track
1606 Float_t label = v(0);
1607 Int_t centralPad = (fTPCParam->GetNPads(fCurrentIndex[1],fCurrentIndex[3]-1))/2;
1609 Int_t nElectrons = (tv->GetNrows()-1)/5;
1610 indexRange[0]=9999; // min pad
1611 indexRange[1]=-1; // max pad
1612 indexRange[2]=9999; //min time
1613 indexRange[3]=-1; // max time
1615 TMatrixF &signal = *m1;
1616 TMatrixF &total = *m2;
1618 // Loop over all electrons
1620 for(Int_t nel=0; nel<nElectrons; nel++){
1622 Float_t aval = v(idx+4);
1623 Float_t eltoadcfac=aval*fTPCParam->GetTotalNormFac();
1624 Float_t xyz[4]={v(idx+1),v(idx+2),v(idx+3),v(idx+5)};
1625 Int_t n = ((AliTPCParamSR*)fTPCParam)->CalcResponseFast(xyz,fCurrentIndex,fCurrentIndex[3]);
1627 Int_t *index = fTPCParam->GetResBin(0);
1628 Float_t *weight = & (fTPCParam->GetResWeight(0));
1630 if (n>0) for (Int_t i =0; i<n; i++){
1631 Int_t pad=index[1]+centralPad; //in digit coordinates central pad has coordinate 0
1634 Int_t time=index[2];
1635 Float_t qweight = *(weight)*eltoadcfac;
1637 if (m1!=0) signal(pad,time)+=qweight;
1638 total(pad,time)+=qweight;
1639 if (indexRange[0]>pad) indexRange[0]=pad;
1640 if (indexRange[1]<pad) indexRange[1]=pad;
1641 if (indexRange[2]>time) indexRange[2]=time;
1642 if (indexRange[3]<time) indexRange[3]=time;
1649 } // end of loop over electrons
1651 return label; // returns track label when finished
1654 //_____________________________________________________________________________
1655 void AliTPC::GetList(Float_t label,Int_t np,TMatrixF *m,
1656 Int_t *indexRange, Float_t **pList)
1658 //----------------------------------------------------------------------
1659 // Updates the list of tracks contributing to digits for a given row
1660 //----------------------------------------------------------------------
1662 //-----------------------------------------------------------------
1663 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1664 //-----------------------------------------------------------------
1666 TMatrixF &signal = *m;
1668 // lop over nonzero digits
1670 for(Int_t it=indexRange[2];it<indexRange[3]+1;it++){
1671 for(Int_t ip=indexRange[0];ip<indexRange[1]+1;ip++){
1674 // accept only the contribution larger than 500 electrons (1/2 s_noise)
1676 if(signal(ip,it)<0.5) continue;
1678 Int_t globalIndex = it*np+ip; // globalIndex starts from 0!
1680 if(!pList[globalIndex]){
1683 // Create new list (6 elements - 3 signals and 3 labels),
1686 pList[globalIndex] = new Float_t [6];
1690 *pList[globalIndex] = -1.;
1691 *(pList[globalIndex]+1) = -1.;
1692 *(pList[globalIndex]+2) = -1.;
1693 *(pList[globalIndex]+3) = -1.;
1694 *(pList[globalIndex]+4) = -1.;
1695 *(pList[globalIndex]+5) = -1.;
1697 *pList[globalIndex] = label;
1698 *(pList[globalIndex]+3) = signal(ip,it);
1702 // check the signal magnitude
1704 Float_t highest = *(pList[globalIndex]+3);
1705 Float_t middle = *(pList[globalIndex]+4);
1706 Float_t lowest = *(pList[globalIndex]+5);
1709 // compare the new signal with already existing list
1712 if(signal(ip,it)<lowest) continue; // neglect this track
1716 if (signal(ip,it)>highest){
1717 *(pList[globalIndex]+5) = middle;
1718 *(pList[globalIndex]+4) = highest;
1719 *(pList[globalIndex]+3) = signal(ip,it);
1721 *(pList[globalIndex]+2) = *(pList[globalIndex]+1);
1722 *(pList[globalIndex]+1) = *pList[globalIndex];
1723 *pList[globalIndex] = label;
1725 else if (signal(ip,it)>middle){
1726 *(pList[globalIndex]+5) = middle;
1727 *(pList[globalIndex]+4) = signal(ip,it);
1729 *(pList[globalIndex]+2) = *(pList[globalIndex]+1);
1730 *(pList[globalIndex]+1) = label;
1733 *(pList[globalIndex]+5) = signal(ip,it);
1734 *(pList[globalIndex]+2) = label;
1738 } // end of loop over pads
1739 } // end of loop over time bins
1742 //___________________________________________________________________
1743 void AliTPC::MakeSector(Int_t isec,Int_t nrows,TTree *TH,
1744 Stat_t ntracks,TObjArray **row)
1747 //-----------------------------------------------------------------
1748 // Prepares the sector digitization, creates the vectors of
1749 // tracks for each row of this sector. The track vector
1750 // contains the track label and the position of electrons.
1751 //-----------------------------------------------------------------
1753 //-----------------------------------------------------------------
1754 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1755 //-----------------------------------------------------------------
1757 Float_t gasgain = fTPCParam->GetGasGain();
1761 AliTPChit *tpcHit; // pointer to a sigle TPC hit
1764 if (fHitType>1) branch = TH->GetBranch("TPC2");
1765 else branch = TH->GetBranch("TPC");
1768 //----------------------------------------------
1769 // Create TObjArray-s, one for each row,
1770 // each TObjArray will store the TVectors
1771 // of electrons, one TVectors per each track.
1772 //----------------------------------------------
1774 Int_t *nofElectrons = new Int_t [nrows+2]; // electron counter for each row
1775 TVector **tracks = new TVector* [nrows+2]; //pointers to the track vectors
1777 for(i=0; i<nrows+2; i++){
1778 row[i] = new TObjArray;
1785 //--------------------------------------------------------------------
1786 // Loop over tracks, the "track" contains the full history
1787 //--------------------------------------------------------------------
1789 Int_t previousTrack,currentTrack;
1790 previousTrack = -1; // nothing to store so far!
1792 for(Int_t track=0;track<ntracks;track++){
1793 Bool_t isInSector=kTRUE;
1795 isInSector = TrackInVolume(isec,track);
1796 if (!isInSector) continue;
1798 branch->GetEntry(track); // get next track
1802 tpcHit = (AliTPChit*)FirstHit(-1);
1804 //--------------------------------------------------------------
1806 //--------------------------------------------------------------
1811 Int_t sector=tpcHit->fSector; // sector number
1813 tpcHit = (AliTPChit*) NextHit();
1817 // Remove hits which arrive before the TPC opening gate signal
1818 if(((fTPCParam->GetZLength(isec)-TMath::Abs(tpcHit->Z()))
1819 /fTPCParam->GetDriftV()+tpcHit->Time())<fTPCParam->GetGateDelay()) {
1820 tpcHit = (AliTPChit*) NextHit();
1824 currentTrack = tpcHit->Track(); // track number
1826 if(currentTrack != previousTrack){
1828 // store already filled fTrack
1830 for(i=0;i<nrows+2;i++){
1831 if(previousTrack != -1){
1832 if(nofElectrons[i]>0){
1833 TVector &v = *tracks[i];
1834 v(0) = previousTrack;
1835 tracks[i]->ResizeTo(5*nofElectrons[i]+1); // shrink if necessary
1836 row[i]->Add(tracks[i]);
1839 delete tracks[i]; // delete empty TVector
1845 tracks[i] = new TVector(601); // TVectors for the next fTrack
1847 } // end of loop over rows
1849 previousTrack=currentTrack; // update track label
1852 Int_t qI = (Int_t) (tpcHit->fQ); // energy loss (number of electrons)
1854 //---------------------------------------------------
1855 // Calculate the electron attachment probability
1856 //---------------------------------------------------
1859 Float_t time = 1.e6*(fTPCParam->GetZLength(isec)-TMath::Abs(tpcHit->Z()))
1860 /fTPCParam->GetDriftV();
1862 Float_t attProb = fTPCParam->GetAttCoef()*
1863 fTPCParam->GetOxyCont()*time; // fraction!
1865 //-----------------------------------------------
1866 // Loop over electrons
1867 //-----------------------------------------------
1870 for(Int_t nel=0;nel<qI;nel++){
1871 // skip if electron lost due to the attachment
1872 if((gRandom->Rndm(0)) < attProb) continue; // electron lost!
1877 // protection for the nonphysical avalanche size (10**6 maximum)
1879 Double_t rn=TMath::Max(gRandom->Rndm(0),1.93e-22);
1880 xyz[3]= (Float_t) (-gasgain*TMath::Log(rn));
1883 TransportElectron(xyz,index);
1885 fTPCParam->GetPadRow(xyz,index);
1886 // Electron track time (for pileup simulation)
1887 xyz[4] = tpcHit->Time()/fTPCParam->GetTSample();
1888 // row 0 - cross talk from the innermost row
1889 // row fNRow+1 cross talk from the outermost row
1890 rowNumber = index[2]+1;
1891 //transform position to local digit coordinates
1892 //relative to nearest pad row
1893 if ((rowNumber<0)||rowNumber>fTPCParam->GetNRow(isec)+1) continue;
1895 if (isec <fTPCParam->GetNInnerSector()) {
1896 x1 = xyz[1]*fTPCParam->GetInnerPadPitchWidth();
1897 y1 = fTPCParam->GetYInner(rowNumber);
1900 x1=xyz[1]*fTPCParam->GetOuterPadPitchWidth();
1901 y1 = fTPCParam->GetYOuter(rowNumber);
1903 // gain inefficiency at the wires edges - linear
1906 if(x1>y1) xyz[3]*=TMath::Max(1.e-6,(y1-x1+1.));
1908 nofElectrons[rowNumber]++;
1909 //----------------------------------
1910 // Expand vector if necessary
1911 //----------------------------------
1912 if(nofElectrons[rowNumber]>120){
1913 Int_t range = tracks[rowNumber]->GetNrows();
1914 if((nofElectrons[rowNumber])>(range-1)/5){
1916 tracks[rowNumber]->ResizeTo(range+500); // Add 100 electrons
1920 TVector &v = *tracks[rowNumber];
1921 Int_t idx = 5*nofElectrons[rowNumber]-4;
1922 Real_t * position = &(((TVector&)v)(idx)); //make code faster
1923 memcpy(position,xyz,5*sizeof(Float_t));
1925 } // end of loop over electrons
1927 tpcHit = (AliTPChit*)NextHit();
1929 } // end of loop over hits
1930 } // end of loop over tracks
1933 // store remaining track (the last one) if not empty
1936 for(i=0;i<nrows+2;i++){
1937 if(nofElectrons[i]>0){
1938 TVector &v = *tracks[i];
1939 v(0) = previousTrack;
1940 tracks[i]->ResizeTo(5*nofElectrons[i]+1); // shrink if necessary
1941 row[i]->Add(tracks[i]);
1950 delete [] nofElectrons;
1952 } // end of MakeSector
1955 //_____________________________________________________________________________
1959 // Initialise TPC detector after definition of geometry
1961 AliDebug(1,"*********************************************");
1964 //_____________________________________________________________________________
1965 void AliTPC::MakeBranch(Option_t* option)
1968 // Create Tree branches for the TPC.
1971 Int_t buffersize = 4000;
1972 char branchname[10];
1973 sprintf(branchname,"%s",GetName());
1975 const char *h = strstr(option,"H");
1977 if ( h && (fHitType<=1) && (fHits == 0x0)) fHits = new TClonesArray("AliTPChit", 176);//skowron 20.06.03
1979 AliDetector::MakeBranch(option);
1981 const char *d = strstr(option,"D");
1983 if (fDigits && fLoader->TreeD() && d) {
1984 MakeBranchInTree(gAlice->TreeD(), branchname, &fDigits, buffersize, 0);
1987 if (fHitType>1) MakeBranch2(option,0); // MI change 14.09.2000
1990 //_____________________________________________________________________________
1991 void AliTPC::ResetDigits()
1994 // Reset number of digits and the digits array for this detector
1997 if (fDigits) fDigits->Clear();
2002 //_____________________________________________________________________________
2003 void AliTPC::SetSens(Int_t sens)
2006 //-------------------------------------------------------------
2007 // Activates/deactivates the sensitive strips at the center of
2008 // the pad row -- this is for the space-point resolution calculations
2009 //-------------------------------------------------------------
2011 //-----------------------------------------------------------------
2012 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2013 //-----------------------------------------------------------------
2019 void AliTPC::SetSide(Float_t side=0.)
2021 // choice of the TPC side
2026 //_____________________________________________________________________________
2028 void AliTPC::TransportElectron(Float_t *xyz, Int_t *index)
2031 // electron transport taking into account:
2033 // 2.ExB at the wires
2034 // 3. nonisochronity
2036 // xyz and index must be already transformed to system 1
2039 fTPCParam->Transform1to2(xyz,index);
2042 Float_t driftl=xyz[2];
2043 if(driftl<0.01) driftl=0.01;
2044 driftl=TMath::Sqrt(driftl);
2045 Float_t sigT = driftl*(fTPCParam->GetDiffT());
2046 Float_t sigL = driftl*(fTPCParam->GetDiffL());
2047 xyz[0]=gRandom->Gaus(xyz[0],sigT);
2048 xyz[1]=gRandom->Gaus(xyz[1],sigT);
2049 xyz[2]=gRandom->Gaus(xyz[2],sigL);
2053 if (fTPCParam->GetMWPCReadout()==kTRUE){
2054 Float_t dx = fTPCParam->Transform2to2NearestWire(xyz,index);
2055 xyz[1]+=dx*(fTPCParam->GetOmegaTau());
2057 //add nonisochronity (not implemented yet)
2061 //______________________________________________________________________
2062 AliTPChit::AliTPChit()
2074 //_____________________________________________________________________________
2075 AliTPChit::AliTPChit(Int_t shunt, Int_t track, Int_t *vol, Float_t *hits)
2076 :AliHit(shunt,track),
2083 // Creates a TPC hit object
2094 //________________________________________________________________________
2095 // Additional code because of the AliTPCTrackHitsV2
2097 void AliTPC::MakeBranch2(Option_t *option,const char */*file*/)
2100 // Create a new branch in the current Root Tree
2101 // The branch of fHits is automatically split
2102 // MI change 14.09.2000
2104 if (fHitType<2) return;
2105 char branchname[10];
2106 sprintf(branchname,"%s2",GetName());
2108 // Get the pointer to the header
2109 const char *cH = strstr(option,"H");
2111 if (fTrackHits && TreeH() && cH && fHitType&4) {
2112 AliDebug(1,"Making branch for Type 4 Hits");
2113 TreeH()->Branch(branchname,"AliTPCTrackHitsV2",&fTrackHits,fBufferSize,99);
2116 // if (fTrackHitsOld && TreeH() && cH && fHitType&2) {
2117 // AliDebug(1,"Making branch for Type 2 Hits");
2118 // AliObjectBranch * branch = new AliObjectBranch(branchname,"AliTPCTrackHits",&fTrackHitsOld,
2119 // TreeH(),fBufferSize,99);
2120 // TreeH()->GetListOfBranches()->Add(branch);
2124 void AliTPC::SetTreeAddress()
2126 //Sets tree address for hits
2128 if (fHits == 0x0 ) fHits = new TClonesArray("AliTPChit", 176);//skowron 20.06.03
2129 AliDetector::SetTreeAddress();
2131 if (fHitType>1) SetTreeAddress2();
2134 void AliTPC::SetTreeAddress2()
2137 // Set branch address for the TrackHits Tree
2142 char branchname[20];
2143 sprintf(branchname,"%s2",GetName());
2145 // Branch address for hit tree
2146 TTree *treeH = TreeH();
2147 if ((treeH)&&(fHitType&4)) {
2148 branch = treeH->GetBranch(branchname);
2150 branch->SetAddress(&fTrackHits);
2151 AliDebug(1,"fHitType&4 Setting");
2154 AliDebug(1,"fHitType&4 Failed (can not find branch)");
2157 // if ((treeH)&&(fHitType&2)) {
2158 // branch = treeH->GetBranch(branchname);
2160 // branch->SetAddress(&fTrackHitsOld);
2161 // AliDebug(1,"fHitType&2 Setting");
2164 // AliDebug(1,"fHitType&2 Failed (can not find branch)");
2166 //set address to TREETR
2168 TTree *treeTR = TreeTR();
2169 if (treeTR && fTrackReferences) {
2170 branch = treeTR->GetBranch(GetName());
2171 if (branch) branch->SetAddress(&fTrackReferences);
2176 void AliTPC::FinishPrimary()
2178 if (fTrackHits &&fHitType&4) fTrackHits->FlushHitStack();
2179 // if (fTrackHitsOld && fHitType&2) fTrackHitsOld->FlushHitStack();
2183 void AliTPC::AddHit2(Int_t track, Int_t *vol, Float_t *hits)
2186 // add hit to the list
2189 int primary = gAlice->GetMCApp()->GetPrimary(track);
2190 gAlice->GetMCApp()->Particle(primary)->SetBit(kKeepBit);
2194 gAlice->GetMCApp()->FlagTrack(track);
2196 if (fTrackHits && fHitType&4)
2197 fTrackHits->AddHitKartez(vol[0],rtrack, hits[0],
2198 hits[1],hits[2],(Int_t)hits[3],hits[4]);
2199 // if (fTrackHitsOld &&fHitType&2 )
2200 // fTrackHitsOld->AddHitKartez(vol[0],rtrack, hits[0],
2201 // hits[1],hits[2],(Int_t)hits[3]);
2205 void AliTPC::ResetHits()
2207 if (fHitType&1) AliDetector::ResetHits();
2208 if (fHitType>1) ResetHits2();
2211 void AliTPC::ResetHits2()
2215 if (fTrackHits && fHitType&4) fTrackHits->Clear();
2216 // if (fTrackHitsOld && fHitType&2) fTrackHitsOld->Clear();
2220 AliHit* AliTPC::FirstHit(Int_t track)
2222 if (fHitType>1) return FirstHit2(track);
2223 return AliDetector::FirstHit(track);
2225 AliHit* AliTPC::NextHit()
2230 if (fHitType>1) return NextHit2();
2232 return AliDetector::NextHit();
2235 AliHit* AliTPC::FirstHit2(Int_t track)
2238 // Initialise the hit iterator
2239 // Return the address of the first hit for track
2240 // If track>=0 the track is read from disk
2241 // while if track<0 the first hit of the current
2242 // track is returned
2245 gAlice->ResetHits();
2246 TreeH()->GetEvent(track);
2249 if (fTrackHits && fHitType&4) {
2250 fTrackHits->First();
2251 return fTrackHits->GetHit();
2253 // if (fTrackHitsOld && fHitType&2) {
2254 // fTrackHitsOld->First();
2255 // return fTrackHitsOld->GetHit();
2261 AliHit* AliTPC::NextHit2()
2264 //Return the next hit for the current track
2267 // if (fTrackHitsOld && fHitType&2) {
2268 // fTrackHitsOld->Next();
2269 // return fTrackHitsOld->GetHit();
2273 return fTrackHits->GetHit();
2279 void AliTPC::LoadPoints(Int_t)
2284 if(fHitType==1) AliDetector::LoadPoints(a);
2285 else LoadPoints2(a);
2289 void AliTPC::RemapTrackHitIDs(Int_t *map)
2294 if (!fTrackHits) return;
2296 // if (fTrackHitsOld && fHitType&2){
2297 // AliObjectArray * arr = fTrackHitsOld->fTrackHitsInfo;
2298 // for (UInt_t i=0;i<arr->GetSize();i++){
2299 // AliTrackHitsInfo * info = (AliTrackHitsInfo *)(arr->At(i));
2300 // info->fTrackID = map[info->fTrackID];
2303 // if (fTrackHitsOld && fHitType&4){
2304 if (fTrackHits && fHitType&4){
2305 TClonesArray * arr = fTrackHits->GetArray();;
2306 for (Int_t i=0;i<arr->GetEntriesFast();i++){
2307 AliTrackHitsParamV2 * info = (AliTrackHitsParamV2 *)(arr->At(i));
2308 info->SetTrackID(map[info->GetTrackID()]);
2313 Bool_t AliTPC::TrackInVolume(Int_t id,Int_t track)
2315 //return bool information - is track in given volume
2316 //load only part of the track information
2317 //return true if current track is in volume
2320 // if (fTrackHitsOld && fHitType&2) {
2321 // TBranch * br = TreeH()->GetBranch("fTrackHitsInfo");
2322 // br->GetEvent(track);
2323 // AliObjectArray * ar = fTrackHitsOld->fTrackHitsInfo;
2324 // for (UInt_t j=0;j<ar->GetSize();j++){
2325 // if ( ((AliTrackHitsInfo*)ar->At(j))->fVolumeID==id) return kTRUE;
2329 if (fTrackHits && fHitType&4) {
2330 TBranch * br1 = TreeH()->GetBranch("fVolumes");
2331 TBranch * br2 = TreeH()->GetBranch("fNVolumes");
2332 br2->GetEvent(track);
2333 br1->GetEvent(track);
2334 Int_t *volumes = fTrackHits->GetVolumes();
2335 Int_t nvolumes = fTrackHits->GetNVolumes();
2336 if (!volumes && nvolumes>0) {
2337 AliWarning(Form("Problematic track\t%d\t%d",track,nvolumes));
2340 for (Int_t j=0;j<nvolumes; j++)
2341 if (volumes[j]==id) return kTRUE;
2345 TBranch * br = TreeH()->GetBranch("fSector");
2346 br->GetEvent(track);
2347 for (Int_t j=0;j<fHits->GetEntriesFast();j++){
2348 if ( ((AliTPChit*)fHits->At(j))->fSector==id) return kTRUE;
2355 //_____________________________________________________________________________
2356 void AliTPC::LoadPoints2(Int_t)
2359 // Store x, y, z of all hits in memory
2361 // if (fTrackHits == 0 && fTrackHitsOld==0) return;
2362 if (fTrackHits == 0 ) return;
2365 if (fHitType&4) nhits = fTrackHits->GetEntriesFast();
2366 // if (fHitType&2) nhits = fTrackHitsOld->GetEntriesFast();
2368 if (nhits == 0) return;
2369 Int_t tracks = gAlice->GetMCApp()->GetNtrack();
2370 if (fPoints == 0) fPoints = new TObjArray(tracks);
2373 Int_t *ntrk=new Int_t[tracks];
2374 Int_t *limi=new Int_t[tracks];
2375 Float_t **coor=new Float_t*[tracks];
2376 for(Int_t i=0;i<tracks;i++) {
2382 AliPoints *points = 0;
2385 Int_t chunk=nhits/4+1;
2387 // Loop over all the hits and store their position
2389 ahit = FirstHit2(-1);
2391 trk=ahit->GetTrack();
2392 if(ntrk[trk]==limi[trk]) {
2394 // Initialise a new track
2395 fp=new Float_t[3*(limi[trk]+chunk)];
2397 memcpy(fp,coor[trk],sizeof(Float_t)*3*limi[trk]);
2398 delete [] coor[trk];
2405 fp[3*ntrk[trk] ] = ahit->X();
2406 fp[3*ntrk[trk]+1] = ahit->Y();
2407 fp[3*ntrk[trk]+2] = ahit->Z();
2415 for(trk=0; trk<tracks; ++trk) {
2417 points = new AliPoints();
2418 points->SetMarkerColor(kYellow); //PH kYellow it the default in TPC
2419 points->SetMarkerSize(1);//PH Default size=1
2420 points->SetDetector(this);
2421 points->SetParticle(trk);
2422 points->SetPolyMarker(ntrk[trk],coor[trk],1); // Default style=1
2423 fPoints->AddAt(points,trk);
2424 delete [] coor[trk];
2434 //_____________________________________________________________________________
2435 void AliTPC::LoadPoints3(Int_t)
2438 // Store x, y, z of all hits in memory
2439 // - only intersection point with pad row
2440 if (fTrackHits == 0) return;
2442 Int_t nhits = fTrackHits->GetEntriesFast();
2443 if (nhits == 0) return;
2444 Int_t tracks = gAlice->GetMCApp()->GetNtrack();
2445 if (fPoints == 0) fPoints = new TObjArray(2*tracks);
2446 fPoints->Expand(2*tracks);
2449 Int_t *ntrk=new Int_t[tracks];
2450 Int_t *limi=new Int_t[tracks];
2451 Float_t **coor=new Float_t*[tracks];
2452 for(Int_t i=0;i<tracks;i++) {
2458 AliPoints *points = 0;
2461 Int_t chunk=nhits/4+1;
2463 // Loop over all the hits and store their position
2465 ahit = FirstHit2(-1);
2469 trk=ahit->GetTrack();
2470 Float_t x[3]={ahit->X(),ahit->Y(),ahit->Z()};
2471 Int_t index[3]={1,((AliTPChit*)ahit)->fSector,0};
2472 Int_t currentrow = fTPCParam->GetPadRow(x,index) ;
2473 if (currentrow!=lastrow){
2474 lastrow = currentrow;
2475 //later calculate intersection point
2476 if(ntrk[trk]==limi[trk]) {
2478 // Initialise a new track
2479 fp=new Float_t[3*(limi[trk]+chunk)];
2481 memcpy(fp,coor[trk],sizeof(Float_t)*3*limi[trk]);
2482 delete [] coor[trk];
2489 fp[3*ntrk[trk] ] = ahit->X();
2490 fp[3*ntrk[trk]+1] = ahit->Y();
2491 fp[3*ntrk[trk]+2] = ahit->Z();
2498 for(trk=0; trk<tracks; ++trk) {
2500 points = new AliPoints();
2501 points->SetMarkerColor(kMagenta); //PH kYellow + 1 is kMagenta
2502 points->SetMarkerStyle(5);
2503 points->SetMarkerSize(0.2);
2504 points->SetDetector(this);
2505 points->SetParticle(trk);
2506 points->SetPolyMarker(ntrk[trk],coor[trk],30);
2507 fPoints->AddAt(points,tracks+trk);
2508 delete [] coor[trk];
2519 AliLoader* AliTPC::MakeLoader(const char* topfoldername)
2522 fLoader = new AliTPCLoader(GetName(),topfoldername);
2526 ////////////////////////////////////////////////////////////////////////
2527 AliTPCParam* AliTPC::LoadTPCParam(TFile *file) {
2529 // load TPC paarmeters from a given file or create new if the object
2530 // is not found there
2531 // 12/05/2003 This method should be moved to the AliTPCLoader
2532 // and one has to decide where to store the TPC parameters
2535 sprintf(paramName,"75x40_100x60_150x60");
2536 AliTPCParam *paramTPC=(AliTPCParam*)file->Get(paramName);
2538 AliDebugClass(1,Form("TPC parameters %s found.",paramName));
2540 AliWarningClass("TPC parameters not found. Create new (they may be incorrect)");
2541 paramTPC = new AliTPCParamSR;
2545 // the older version of parameters can be accessed with this code.
2546 // In some cases, we have old parameters saved in the file but
2547 // digits were created with new parameters, it can be distinguish
2548 // by the name of TPC TreeD. The code here is just for the case
2549 // we would need to compare with old data, uncomment it if needed.
2551 // char paramName[50];
2552 // sprintf(paramName,"75x40_100x60");
2553 // AliTPCParam *paramTPC=(AliTPCParam*)in->Get(paramName);
2555 // cout<<"TPC parameters "<<paramName<<" found."<<endl;
2557 // sprintf(paramName,"75x40_100x60_150x60");
2558 // paramTPC=(AliTPCParam*)in->Get(paramName);
2560 // cout<<"TPC parameters "<<paramName<<" found."<<endl;
2562 // cerr<<"TPC parameters not found. Create new (they may be incorrect)."
2564 // paramTPC = new AliTPCParamSR;