1 /**************************************************************************
2 * Copyright(c) 1998-2000, 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 **************************************************************************/
19 #include <TObjArray.h>
21 #include <TDirectory.h>
25 #include "AliFMDDigitizer.h"
27 #include "AliFMDSDigitizer.h"
28 #include "AliFMDhit.h"
29 #include "AliFMDdigit.h"
30 #include "AliRunDigitizer.h"
39 ClassImp(AliFMDDigitizer)
41 //___________________________________________
42 AliFMDDigitizer::AliFMDDigitizer() :AliDigitizer()
44 // Default ctor - don't use it
48 //___________________________________________
49 AliFMDDigitizer::AliFMDDigitizer(AliRunDigitizer* manager)
50 :AliDigitizer(manager)
52 cout<<"AliFMDDigitizer::AliFMDDigitizer"<<endl;
53 // ctor which should be used
56 // cerr<<"AliFMDDigitizer::AliFMDDigitizer"
57 // <<"(AliRunDigitizer* manager) was processed"<<endl;
61 //------------------------------------------------------------------------
62 AliFMDDigitizer::~AliFMDDigitizer()
72 //------------------------------------------------------------------------
73 Bool_t AliFMDDigitizer::Init()
76 cout<<"AliFMDDigitizer::Init"<<endl;
81 //---------------------------------------------------------------------
83 void AliFMDDigitizer::Exec(Option_t* option)
89 cout<<"AliFMDDigitizer::>SDigits2Digits start...\n";
92 AliFMD * FMD = (AliFMD *) gAlice->GetDetector("FMD") ;
93 cout<<" FMD "<<FMD<<endl;
94 if (gAlice->TreeD () == 0)
95 gAlice->MakeTree ("D");
96 fDigits = FMD->Digits();
99 Int_t chargeSum[10][50][300];
101 Int_t ivol, iSector, iRing;
102 for (Int_t i=0; i<10; i++)
103 for(Int_t j=0; j<50; j++)
104 for(Int_t ij=0; ij<300; ij++)
105 chargeSum[i][j][ij]=0;
106 Int_t NumberOfRings[5]=
107 {256,128,256,128,256};
108 Int_t NumberOfSectors[5]=
112 // Loop over files to digitize
114 for (Int_t inputFile=0; inputFile<fManager->GetNinputs();
117 ReadDigit( chargeSum, inputFile);
120 // Put noise and make ADC signal
121 for ( ivol=1; ivol<=5; ivol++){
122 for ( iSector=1; iSector<=NumberOfSectors[ivol-1]; iSector++){
123 for ( iRing=1; iRing<=NumberOfRings[ivol-1]; iRing++){
127 digit[3]=PutNoise(chargeSum[ivol][iSector][iRing]);
128 if(chargeSum[ivol][iSector][iRing] <= 500) digit[3]=500;
129 //dynamic range from MIP(0.155MeV) to 30MIP(4.65MeV)
131 Float_t channelWidth=(22400*50)/1024;
132 digit[4]=Int_t(digit[3]/channelWidth);
133 if (digit[4]>1024) digit[4]=1024;
134 FMD->AddDigit(digit);
139 TTree* treeD = fManager->GetTreeD();
141 FMD->MakeBranch("D");
144 fManager->GetTreeD()->Write(0,TObject::kOverwrite);
146 gAlice->ResetDigits();
150 //---------------------------------------------------------------------
152 void AliFMDDigitizer::ReadDigit(Int_t chargeSum[][50][300], Int_t inputFile )
154 cout<<" AliFMDDigitizer::ReadDigit "<<endl;
155 AliFMDdigit *fmddigit;
156 gAlice->GetEvent(0) ;
157 AliFMD * FMD = (AliFMD *) gAlice->GetDetector("FMD") ;
159 gAlice->ResetDigits();
163 TClonesArray * FMDSdigits = FMD->SDigits();
165 ndig=FMDSdigits->GetEntries();
168 for (k=0; k<ndig; k++) {
169 fmddigit= (AliFMDdigit*) FMDSdigits->UncheckedAt(k);
170 Int_t iVolume=fmddigit->Volume();
171 Int_t iNumberOfSector =fmddigit->NumberOfSector();
172 Int_t iNumberOfRing=fmddigit->NumberOfRing();
173 chargeSum[iVolume][iNumberOfSector][iNumberOfRing]+=fmddigit->Charge();