**************************************************************************/
/* $Id$ */
-
+/* History of cvs commits:
+ *
+ * $Log$
+ *
+ */
//_________________________________________________________________________
// Base Class for EMCAL description:
// This class contains material definitions
#include <TFolder.h>
#include <TTree.h>
#include <TVirtualMC.h>
+#include <TH1F.h>
+#include <TF1.h>
+#include <TRandom.h>
+#include <TGraph.h>
// --- Standard library ---
// --- AliRoot header files ---
#include "AliMagF.h"
#include "AliEMCAL.h"
-#include "AliEMCALLoader.h"
#include "AliRun.h"
+#include "AliEMCALLoader.h"
#include "AliEMCALSDigitizer.h"
#include "AliEMCALDigitizer.h"
+#include "AliEMCALDigit.h"
+//#include "AliAltroMapping.h"
+#include "AliCaloAltroMapping.h"
+#include "AliAltroBuffer.h"
+#include "AliRawReader.h"
+#include "AliCaloRawStream.h"
+#include "AliDAQ.h"
ClassImp(AliEMCAL)
+Double_t AliEMCAL::fgCapa = 1.; // 1pF
+Int_t AliEMCAL::fgOrder = 2 ;
+Double_t AliEMCAL::fgTimeMax = 2.56E-5 ; // each sample is over 100 ns fTimeMax/fTimeBins
+Double_t AliEMCAL::fgTimePeak = 4.1E-6 ; // 4 micro seconds
+Double_t AliEMCAL::fgTimeTrigger = 100E-9 ; // 100ns, just for a reference
+// some digitization constants
+Int_t AliEMCAL::fgThreshold = 1;
+Int_t AliEMCAL::fgDDLPerSuperModule = 2; // 2 ddls per SuperModule
+
//____________________________________________________________________________
-AliEMCAL::AliEMCAL():AliDetector()
+AliEMCAL::AliEMCAL()
+ : AliDetector(),
+ fBirkC0(0),
+ fBirkC1(0.),
+ fBirkC2(0.),
+ fHighCharge(0.),
+ fHighGain(0.),
+ fHighLowGainFactor(0.),
+ fLowGainOffset(0)
{
// Default ctor
- fName="EMCAL";
- fGeom = 0 ;
+ fName = "EMCAL" ;
+ Init();
+
}
//____________________________________________________________________________
-AliEMCAL::AliEMCAL(const char* name, const char* title): AliDetector(name,title)
+AliEMCAL::AliEMCAL(const char* name, const char* title)
+ : AliDetector(name,title),
+ fBirkC0(0),
+ fBirkC1(0.),
+ fBirkC2(0.),
+ fHighCharge(0.),
+ fHighGain(0.),
+ fHighLowGainFactor(0.),
+ fLowGainOffset(0)
{
// ctor : title is used to identify the layout
- fGeom = 0;
+ Init();
+
}
//____________________________________________________________________________
AliEMCAL::~AliEMCAL()
{
-
+ //dtor
}
//____________________________________________________________________________
-void AliEMCAL::Copy(AliEMCAL & emcal)
+void AliEMCAL::Init(void)
{
- TObject::Copy(emcal) ;
+ //initialize EMCAL values
+ fBirkC0 = 1;
+ fBirkC1 = 0.013/1.032;
+ fBirkC2 = 9.6e-6/(1.032 * 1.032);
+
+ fHighCharge = 8.2 ; // adjusted for a high gain range of 5.12 GeV (10 bits)
+ fHighGain = 6.64 ;
+ fHighLowGainFactor = 16. ; // adjusted for a low gain range of 82 GeV (10 bits)
+ fLowGainOffset = 1 ; // offset added to the module id to distinguish high and low gain data
}
//____________________________________________________________________________
AliDigitizer* AliEMCAL::CreateDigitizer(AliRunDigitizer* manager) const
{
+ //create and return the digitizer
return new AliEMCALDigitizer(manager);
}
// Definitions of materials to build EMCAL and associated tracking media.
// media number in idtmed are 1599 to 1698.
- // --- Air ---
- AliMaterial(0, "Air$", 14.61, 7.3, 0.001205, 30420., 67500., 0, 0) ;
-
+ // --- Air ---
+ Float_t aAir[4]={12.0107,14.0067,15.9994,39.948};
+ Float_t zAir[4]={6.,7.,8.,18.};
+ Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
+ Float_t dAir = 1.20479E-3;
+ AliMixture(0, "Air$", aAir, zAir, dAir, 4, wAir) ;
// --- Lead ---
AliMaterial(1, "Pb$", 207.2, 82, 11.35, 0.56, 0., 0, 0) ;
AliMaterial(3, "Al$", 26.98, 13., 2.7, 8.9, 999., 0, 0) ;
// --- Absorption length is ignored ^
+ // 25-aug-04 by PAI - see PMD/AliPMDv0.cxx for STEEL definition
+ Float_t asteel[4] = { 55.847,51.9961,58.6934,28.0855 };
+ Float_t zsteel[4] = { 26.,24.,28.,14. };
+ Float_t wsteel[4] = { .715,.18,.1,.005 };
+ AliMixture(4, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel);
+
// DEFINITION OF THE TRACKING MEDIA
// for EMCAL: idtmed[1599->1698] equivalent to fIdtmed[0->100]
Int_t * idtmed = fIdtmed->GetArray() - 1599 ;
Int_t isxfld = gAlice->Field()->Integ() ;
Float_t sxmgmx = gAlice->Field()->Max() ;
-
-
- // Air -> idtmed[1599]
- AliMedium(0, "Air $", 0, 0,
+ // Air -> idtmed[1599]
+ AliMedium(0, "Air$", 0, 0,
isxfld, sxmgmx, 10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
// The Lead -> idtmed[1600]
- AliMedium(1, "Lead $", 1, 0,
+ AliMedium(1, "Lead$", 1, 0,
isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
// The scintillator of the CPV made of Polystyrene scintillator -> idtmed[1601]
- AliMedium(2, "CPV scint. $", 2, 1,
+ AliMedium(2, "Scintillator$", 2, 1,
isxfld, sxmgmx, 10.0, 0.001, 0.1, 0.001, 0.001, 0, 0) ;
// Various Aluminium parts made of Al -> idtmed[1602]
- AliMedium(3, "Al parts $", 3, 0,
+ AliMedium(3, "Al$", 3, 0,
isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.001, 0.001, 0, 0) ;
+ // 25-aug-04 by PAI : see PMD/AliPMDv0.cxx for STEEL definition -> idtmed[1603]
+ AliMedium(4, "S steel$", 4, 0,
+ isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.001, 0.001, 0, 0) ;
// --- Set decent energy thresholds for gamma and electron tracking
// Tracking threshold for photons and electrons in Lead
- gMC->Gstpar(idtmed[1600],"CUTGAM",0.00008) ;
- gMC->Gstpar(idtmed[1600],"CUTELE",0.001) ;
- gMC->Gstpar(idtmed[1600],"BCUTE",0.0001) ;
+ Float_t cutgam=10.e-5; // 100 kev;
+ Float_t cutele=10.e-5; // 100 kev;
+ TString ntmp(GetTitle());
+ ntmp.ToUpper();
+ if(ntmp.Contains("10KEV")) {
+ cutele = cutgam = 1.e-5;
+ } else if(ntmp.Contains("50KEV")) {
+ cutele = cutgam = 5.e-5;
+ } else if(ntmp.Contains("100KEV")) {
+ cutele = cutgam = 1.e-4;
+ } else if(ntmp.Contains("200KEV")) {
+ cutele = cutgam = 2.e-4;
+ } else if(ntmp.Contains("500KEV")) {
+ cutele = cutgam = 5.e-4;
+ }
+ gMC->Gstpar(idtmed[1600],"CUTGAM", cutgam);
+ gMC->Gstpar(idtmed[1600],"CUTELE", cutele); // 1MEV -> 0.1MEV; 15-aug-05
+ gMC->Gstpar(idtmed[1600],"BCUTE", cutgam); // BCUTE and BCUTM start from GUTGUM
+ gMC->Gstpar(idtmed[1600],"BCUTM", cutgam); // BCUTE and BCUTM start from GUTGUM
// --- Generate explicitly delta rays in Lead ---
gMC->Gstpar(idtmed[1600], "LOSS",3.) ;
gMC->Gstpar(idtmed[1600], "DRAY",1.) ;
- gMC->Gstpar(idtmed[1600], "DCUTE",0.00001) ;
- gMC->Gstpar(idtmed[1600], "DCUTM",0.00001) ;
+ gMC->Gstpar(idtmed[1600], "DCUTE", cutele) ;
+ gMC->Gstpar(idtmed[1600], "DCUTM", cutele) ;
// --- in aluminium parts ---
+ gMC->Gstpar(idtmed[1602],"CUTGAM", cutgam) ;
+ gMC->Gstpar(idtmed[1602],"CUTELE", cutele) ;
+ gMC->Gstpar(idtmed[1602],"BCUTE", cutgam); // BCUTE and BCUTM start from GUTGUM
+ gMC->Gstpar(idtmed[1602],"BCUTM", cutgam); // BCUTE and BCUTM start from GUTGUM
gMC->Gstpar(idtmed[1602], "LOSS",3.) ;
gMC->Gstpar(idtmed[1602], "DRAY",1.) ;
- gMC->Gstpar(idtmed[1602], "DCUTE",0.00001) ;
- gMC->Gstpar(idtmed[1602], "DCUTM",0.00001) ;
+ gMC->Gstpar(idtmed[1602], "DCUTE", cutele) ;
+ gMC->Gstpar(idtmed[1602], "DCUTM", cutele) ;
// --- and finally thresholds for photons and electrons in the scintillator ---
- gMC->Gstpar(idtmed[1601],"CUTGAM",0.00008) ;
- gMC->Gstpar(idtmed[1601],"CUTELE",0.001) ;
- gMC->Gstpar(idtmed[1601],"BCUTE",0.0001) ;
+ gMC->Gstpar(idtmed[1601],"CUTGAM", cutgam) ;
+ gMC->Gstpar(idtmed[1601],"CUTELE", cutele) ;// 1MEV -> 0.1MEV; 15-aug-05
+ gMC->Gstpar(idtmed[1601],"BCUTE", cutgam); // BCUTE and BCUTM start from GUTGUM
+ gMC->Gstpar(idtmed[1601],"BCUTM", cutgam); // BCUTE and BCUTM start from GUTGUM
+ gMC->Gstpar(idtmed[1601], "LOSS",3.) ; // generate delta rays
+ gMC->Gstpar(idtmed[1601], "DRAY",1.) ;
+ gMC->Gstpar(idtmed[1601], "DCUTE", cutele) ;
+ gMC->Gstpar(idtmed[1601], "DCUTM", cutele) ;
+
+ // S steel -
+ gMC->Gstpar(idtmed[1603],"CUTGAM", cutgam);
+ gMC->Gstpar(idtmed[1603],"CUTELE", cutele);
+ gMC->Gstpar(idtmed[1603],"BCUTE", cutgam); // BCUTE and BCUTM start from GUTGUM
+ gMC->Gstpar(idtmed[1603],"BCUTM", cutgam); // BCUTE and BCUTM start from GUTGUM
+ // --- Generate explicitly delta rays
+ gMC->Gstpar(idtmed[1603], "LOSS",3.);
+ gMC->Gstpar(idtmed[1603], "DRAY",1.);
+ gMC->Gstpar(idtmed[1603], "DCUTE", cutele) ;
+ gMC->Gstpar(idtmed[1603], "DCUTM", cutele) ;
//set constants for Birk's Law implentation
fBirkC0 = 1;
fBirkC1 = 0.013/dP;
fBirkC2 = 9.6e-6/(dP * dP);
-
}
+ //____________________________________________________________________________
+void AliEMCAL::Digits2Raw()
+{
+ // convert digits of the current event to raw data
+
+ AliEMCALLoader * loader = dynamic_cast<AliEMCALLoader*>(fLoader) ;
+
+ // get the digits
+ loader->LoadDigits("EMCAL");
+ loader->GetEvent();
+ TClonesArray* digits = loader->Digits() ;
+
+ if (!digits) {
+ Error("Digits2Raw", "no digits found !");
+ return;
+ }
+
+ // get the digitizer
+ loader->LoadDigitizer();
+ AliEMCALDigitizer * digitizer = dynamic_cast<AliEMCALDigitizer *>(loader->Digitizer()) ;
+
+ // get the geometry
+ AliEMCALGeometry* geom = GetGeometry();
+ if (!geom) {
+ AliError(Form("No geometry found !"));
+ return;
+ }
+
+ AliAltroBuffer* buffer = NULL;
+ Int_t prevDDL = -1;
+ Int_t adcValuesLow[fgkTimeBins];
+ Int_t adcValuesHigh[fgkTimeBins];
+
+ //Load Mapping RCU files once
+ TString path = gSystem->Getenv("ALICE_ROOT");
+ path += "/EMCAL/mapping/RCU";
+ TString path0 = path+"0.data";//This file will change in future
+ TString path1 = path+"1.data";//This file will change in future
+ AliAltroMapping * mapping[2] ; // For the moment only 2
+ mapping[0] = new AliCaloAltroMapping(path0.Data());
+ mapping[1] = new AliCaloAltroMapping(path1.Data());
+
+ // loop over digits (assume ordered digits)
+ for (Int_t iDigit = 0; iDigit < digits->GetEntries(); iDigit++) {
+ AliEMCALDigit* digit = dynamic_cast<AliEMCALDigit *>(digits->At(iDigit)) ;
+ if (digit->GetAmp() < fgThreshold)
+ continue;
+
+ //get cell indeces
+ Int_t nSM = 0;
+ Int_t nIphi = 0;
+ Int_t nIeta = 0;
+ Int_t iphi = 0;
+ Int_t ieta = 0;
+ Int_t nTower = 0;
+ geom->GetCellIndex(digit->GetId(), nSM, nTower, nIphi, nIeta);
+ geom->GetCellPhiEtaIndexInSModule(nSM, nTower, nIphi, nIeta,iphi, ieta) ;
+
+ //Check which is the RCU of the cell.
+ Int_t iRCU = -111;
+ //RCU0
+ if (0<=iphi&&iphi<8) iRCU=0; // first cable row
+ else if (8<=iphi&&iphi<16 && 0<=ieta&&ieta<24) iRCU=0; // first half;
+ //second cable row
+ //RCU1
+ else if(8<=iphi&&iphi<16 && 24<=ieta&&ieta<48) iRCU=1; // second half;
+ //second cable row
+ else if(16<=iphi&&iphi<24) iRCU=1; // third cable row
+
+ //Which DDL?
+ Int_t iDDL = fgDDLPerSuperModule* nSM + iRCU;
+
+ // new DDL
+ if (iDDL != prevDDL) {
+ // write real header and close previous file
+
+ if (buffer) {
+ buffer->Flush();
+ buffer->WriteDataHeader(kFALSE, kFALSE);
+ delete buffer;
+ }
+ // open new file and write dummy header
+ TString fileName = AliDAQ::DdlFileName("EMCAL",iDDL);
+ buffer = new AliAltroBuffer(fileName.Data(),mapping[iRCU]);
+ buffer->WriteDataHeader(kTRUE, kFALSE); //Dummy;
+ prevDDL = iDDL;
+ }
+
+ // out of time range signal (?)
+ if (digit->GetTimeR() > GetRawFormatTimeMax() ) {
+ AliInfo("Signal is out of time range.\n");
+ buffer->FillBuffer((Int_t)digit->GetAmp());
+ buffer->FillBuffer(GetRawFormatTimeBins() ); // time bin
+ buffer->FillBuffer(3); // bunch length
+ buffer->WriteTrailer(3, ieta, iphi, nSM); // trailer
+ // calculate the time response function
+ } else {
+
+ Double_t energy = digit->GetAmp() * digitizer->GetECAchannel() + digitizer->GetECApedestal() ;
+
+ Bool_t lowgain = RawSampledResponse(digit->GetTimeR(), energy, adcValuesHigh, adcValuesLow) ;
+
+ if (lowgain)
+ buffer->WriteChannel(ieta, iphi, 0, GetRawFormatTimeBins(), adcValuesLow, fgThreshold);
+ else
+ buffer->WriteChannel(ieta,iphi, 1, GetRawFormatTimeBins(), adcValuesHigh, fgThreshold);
+
+ }
+ }
+
+ // write real header and close last file
+ if (buffer) {
+ buffer->Flush();
+ buffer->WriteDataHeader(kFALSE, kFALSE);
+ delete buffer;
+ }
+ mapping[0]->Delete();
+ mapping[1]->Delete();
+ loader->UnloadDigits();
+}
+
+//____________________________________________________________________________
+void AliEMCAL::Raw2Digits(AliRawReader* reader)
+{
+ // convert raw data of the current event to digits
+ AliEMCALGeometry * geom = GetGeometry();
+ AliEMCALLoader * loader = dynamic_cast<AliEMCALLoader*>(fLoader) ;
+
+ // get the digits
+ loader->CleanDigits(); // start from scratch
+ loader->LoadDigits("EMCAL");
+ TClonesArray* digits = loader->Digits() ;
+ digits->Clear(); // yes, this is perhaps somewhat paranoid.. [clearing an extra time]
+
+ if (!digits) {
+ Error("Raw2Digits", "no digits found !");
+ return;
+ }
+ if (!reader) {
+ Error("Raw2Digits", "no raw reader found !");
+ return;
+ }
+
+ // and get the digitizer too
+ loader->LoadDigitizer();
+ AliEMCALDigitizer * digitizer = dynamic_cast<AliEMCALDigitizer *>(loader->Digitizer()) ;
+
+ // Use AliAltroRawStream to read the ALTRO format. No need to
+ // reinvent the wheel :-)
+ AliCaloRawStream in(reader,"EMCAL");
+ // Select EMCAL DDL's;
+ reader->Select("EMCAL");
+
+ // reading is from previously existing AliEMCALGetter.cxx
+ // ReadRaw method
+ Bool_t first = kTRUE ;
+
+ TF1 * signalF = new TF1("signal", RawResponseFunction, 0, GetRawFormatTimeMax(), 4);
+ signalF->SetParNames("Charge", "Gain", "Amplitude", "TimeZero");
+
+ Bool_t lowGainFlag = kFALSE ;
+ Int_t id = -1;
+ Int_t idigit = 0 ;
+ Int_t amp = 0 ;
+ Double_t time = 0. ;
+ Double_t energy = 0. ;
+
+ TGraph * gLowGain = new TGraph(GetRawFormatTimeBins()) ;
+ TGraph * gHighGain= new TGraph(GetRawFormatTimeBins()) ;
+
+ while ( in.Next() ) { // EMCAL entries loop
+ if ( in.IsNewRow() ) {//phi
+ if ( in.IsNewColumn() ) {//eta
+ id = geom->GetAbsCellIdFromCellIndexes(in.GetModule(), in.GetRow(), in.GetColumn()) ;
+ if (!first) {
+ FitRaw(lowGainFlag, gLowGain, gHighGain, signalF, energy, time) ;
+
+ if (time == 0. && energy == 0.) {
+ amp = 0 ;
+ }
+ else {
+ amp = static_cast<Int_t>( (energy - digitizer->GetECApedestal()) / digitizer->GetECAchannel() + 0.5 ) ;
+ }
+
+ if (amp > 0) {
+ new((*digits)[idigit]) AliEMCALDigit( -1, -1, id, amp, time) ;
+ idigit++ ;
+ }
+ Int_t index ;
+ for (index = 0; index < GetRawFormatTimeBins(); index++) {
+ gLowGain->SetPoint(index, index * GetRawFormatTimeMax() / GetRawFormatTimeBins(), 0) ;
+ gHighGain->SetPoint(index, index * GetRawFormatTimeMax() / GetRawFormatTimeBins(), 0) ;
+ }
+ } // not first
+ first = kFALSE ;
+ id = geom->GetAbsCellIdFromCellIndexes(in.GetModule(), in.GetRow(), in.GetColumn()) ;
+ if (in.GetModule() == GetRawFormatLowGainOffset() ) {
+ lowGainFlag = kTRUE ;
+ }
+ else {
+ lowGainFlag = kFALSE ;
+ }
+ } //new column-eta
+ }// new row-phi
+ if (lowGainFlag) {
+ gLowGain->SetPoint(in.GetTime(),
+ in.GetTime()* GetRawFormatTimeMax() / GetRawFormatTimeBins(),
+ in.GetSignal()) ;
+ }
+ else {
+ gHighGain->SetPoint(in.GetTime(),
+ in.GetTime() * GetRawFormatTimeMax() / GetRawFormatTimeBins(),
+ in.GetSignal() ) ;
+ }
+ } // EMCAL entries loop
+ digits->Sort() ;
+
+ delete signalF ;
+ delete gLowGain;
+ delete gHighGain ;
+
+ return ;
+}
+
+//____________________________________________________________________________
+void AliEMCAL::FitRaw(Bool_t lowGainFlag, TGraph * gLowGain, TGraph * gHighGain, TF1* signalF, Double_t & energy, Double_t & time)
+{
+ // Fits the raw signal time distribution; from AliEMCALGetter
+
+ const Int_t kNoiseThreshold = 0 ;
+ Double_t timezero1 = 0., timezero2 = 0., timemax = 0. ;
+ Double_t signal = 0., signalmax = 0. ;
+ energy = time = 0. ;
+
+ if (lowGainFlag) {
+ timezero1 = timezero2 = signalmax = timemax = 0. ;
+ signalF->FixParameter(0, GetRawFormatLowCharge()) ;
+ signalF->FixParameter(1, GetRawFormatLowGain()) ;
+ Int_t index ;
+ for (index = 0; index < GetRawFormatTimeBins(); index++) {
+ gLowGain->GetPoint(index, time, signal) ;
+ if (signal > kNoiseThreshold && timezero1 == 0.)
+ timezero1 = time ;
+ if (signal <= kNoiseThreshold && timezero1 > 0. && timezero2 == 0.)
+ timezero2 = time ;
+ if (signal > signalmax) {
+ signalmax = signal ;
+ timemax = time ;
+ }
+ }
+ signalmax /= RawResponseFunctionMax(GetRawFormatLowCharge(),
+ GetRawFormatLowGain()) ;
+ if ( timezero1 + GetRawFormatTimePeak() < GetRawFormatTimeMax() * 0.4 ) { // else its noise
+ signalF->SetParameter(2, signalmax) ;
+ signalF->SetParameter(3, timezero1) ;
+ gLowGain->Fit(signalF, "QRON", "", 0., timezero2); //, "QRON") ;
+ energy = signalF->GetParameter(2) ;
+ time = signalF->GetMaximumX() - GetRawFormatTimePeak() - GetRawFormatTimeTrigger() ;
+ }
+ } else {
+ timezero1 = timezero2 = signalmax = timemax = 0. ;
+ signalF->FixParameter(0, GetRawFormatHighCharge()) ;
+ signalF->FixParameter(1, GetRawFormatHighGain()) ;
+ Int_t index ;
+ for (index = 0; index < GetRawFormatTimeBins(); index++) {
+ gHighGain->GetPoint(index, time, signal) ;
+ if (signal > kNoiseThreshold && timezero1 == 0.)
+ timezero1 = time ;
+ if (signal <= kNoiseThreshold && timezero1 > 0. && timezero2 == 0.)
+ timezero2 = time ;
+ if (signal > signalmax) {
+ signalmax = signal ;
+ timemax = time ;
+ }
+ }
+ signalmax /= RawResponseFunctionMax(GetRawFormatHighCharge(),
+ GetRawFormatHighGain()) ;;
+ if ( timezero1 + GetRawFormatTimePeak() < GetRawFormatTimeMax() * 0.4 ) { // else its noise
+ signalF->SetParameter(2, signalmax) ;
+ signalF->SetParameter(3, timezero1) ;
+ gHighGain->Fit(signalF, "QRON", "", 0., timezero2) ;
+ energy = signalF->GetParameter(2) ;
+ time = signalF->GetMaximumX() - GetRawFormatTimePeak() - GetRawFormatTimeTrigger() ;
+ }
+ }
+
+ return;
+}
+
//____________________________________________________________________________
void AliEMCAL::Hits2SDigits()
{
// create summable digits
- AliEMCALSDigitizer* emcalDigitizer =
- new AliEMCALSDigitizer(fLoader->GetRunLoader()->GetFileName().Data()) ;
- emcalDigitizer->SetEventRange(0, -1) ; // do all the events
- emcalDigitizer->ExecuteTask() ;
+ GetGeometry();
+ AliEMCALSDigitizer emcalDigitizer(fLoader->GetRunLoader()->GetFileName().Data()) ;
+ emcalDigitizer.SetEventRange(0, -1) ; // do all the events
+ emcalDigitizer.ExecuteTask() ;
}
//____________________________________________________________________________
+
AliLoader* AliEMCAL::MakeLoader(const char* topfoldername)
{
//different behaviour than standard (singleton getter)
return fLoader;
}
-//____________________________________________________________________________
-void AliEMCAL::SetTreeAddress()
-{
- // Linking Hits in Tree to Hits array
- TBranch *branch;
- char branchname[20];
- sprintf(branchname,"%s",GetName());
+//__________________________________________________________________
+Double_t AliEMCAL::RawResponseFunction(Double_t *x, Double_t *par)
+{
+ // Shape of the electronics raw reponse:
+ // It is a semi-gaussian, 2nd order Gamma function of the general form
+ // v(t) = n**n * Q * A**n / C *(t/tp)**n * exp(-n * t/tp) with
+ // tp : peaking time par[0]
+ // n : order of the function
+ // C : integrating capacitor in the preamplifier
+ // A : open loop gain of the preamplifier
+ // Q : the total APD charge to be measured Q = C * energy
- // Branch address for hit tree
- TTree *treeH = TreeH();
- if (treeH) {
- branch = treeH->GetBranch(branchname);
- if (branch)
- {
- if (fHits == 0x0)
- fHits= new TClonesArray("AliEMCALHit",1000);
- branch->SetAddress(&fHits);
- }
- else
- {
- Warning("SetTreeAddress","<%s> Failed",GetName());
- }
+ Double_t signal ;
+ Double_t xx = x[0] - ( fgTimeTrigger + par[3] ) ;
+
+ if (xx < 0 || xx > fgTimeMax)
+ signal = 0. ;
+ else {
+ Double_t fac = par[0] * TMath::Power(fgOrder, fgOrder) * TMath::Power(par[1], fgOrder) / fgCapa ;
+ signal = fac * par[2] * TMath::Power(xx / fgTimePeak, fgOrder) * TMath::Exp(-fgOrder * (xx / fgTimePeak)) ;
}
+ return signal ;
}
+//__________________________________________________________________
+Double_t AliEMCAL::RawResponseFunctionMax(Double_t charge, Double_t gain)
+{
+ //compute the maximum of the raw response function and return
+ return ( charge * TMath::Power(fgOrder, fgOrder) * TMath::Power(gain, fgOrder)
+ / ( fgCapa * TMath::Exp(fgOrder) ) );
+}
+//__________________________________________________________________
+Bool_t AliEMCAL::RawSampledResponse(
+const Double_t dtime, const Double_t damp, Int_t * adcH, Int_t * adcL) const
+{
+ // for a start time dtime and an amplitude damp given by digit,
+ // calculates the raw sampled response AliEMCAL::RawResponseFunction
+
+ const Int_t kRawSignalOverflow = 0x3FF ;
+ Bool_t lowGain = kFALSE ;
+
+ TF1 signalF("signal", RawResponseFunction, 0, GetRawFormatTimeMax(), 4);
+
+ for (Int_t iTime = 0; iTime < GetRawFormatTimeBins(); iTime++) {
+ signalF.SetParameter(0, GetRawFormatHighCharge() ) ;
+ signalF.SetParameter(1, GetRawFormatHighGain() ) ;
+ signalF.SetParameter(2, damp) ;
+ signalF.SetParameter(3, dtime) ;
+ Double_t time = iTime * GetRawFormatTimeMax() / GetRawFormatTimeBins() ;
+ Double_t signal = signalF.Eval(time) ;
+ if ( static_cast<Int_t>(signal+0.5) > kRawSignalOverflow ){ // larger than 10 bits
+ signal = kRawSignalOverflow ;
+ lowGain = kTRUE ;
+ }
+ adcH[iTime] = static_cast<Int_t>(signal + 0.5) ;
+
+ signalF.SetParameter(0, GetRawFormatLowCharge() ) ;
+ signalF.SetParameter(1, GetRawFormatLowGain() ) ;
+ signal = signalF.Eval(time) ;
+ if ( static_cast<Int_t>(signal+0.5) > kRawSignalOverflow) // larger than 10 bits
+ signal = kRawSignalOverflow ;
+ adcL[iTime] = static_cast<Int_t>(0.5 + signal ) ;
-
-
+ }
+ return lowGain ;
+}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff