X-Git-Url: http://git.uio.no/git/?a=blobdiff_plain;f=EMCAL%2FAliEMCAL.cxx;h=e4f6eac1fd7ad760e57ab7a4b8b43128ae5daea1;hb=f0377b230ca03fa2adca0a489d18ead749d811f8;hp=89f47bd13fcdd01b974b67e8549867be19388193;hpb=88cb7938ca21d4a80991d4e7aa564008c29340f7;p=u%2Fmrichter%2FAliRoot.git diff --git a/EMCAL/AliEMCAL.cxx b/EMCAL/AliEMCAL.cxx index 89f47bd13fc..e4f6eac1fd7 100644 --- a/EMCAL/AliEMCAL.cxx +++ b/EMCAL/AliEMCAL.cxx @@ -28,39 +28,56 @@ // --- ROOT system --- class TFile; #include -#include #include #include +#include +#include +#include +#include // --- Standard library --- -#include // --- AliRoot header files --- #include "AliMagF.h" #include "AliEMCAL.h" -#include "AliEMCALGeometry.h" -#include "AliEMCALLoader.h" -//#include "AliEMCALQAChecker.h" #include "AliRun.h" +#include "AliEMCALLoader.h" +#include "AliEMCALSDigitizer.h" +#include "AliEMCALDigitizer.h" +#include "AliEMCALDigit.h" +#include "AliAltroBuffer.h" +#include "AliRawReader.h" +#include "AliEMCALRawStream.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::fgDDLOffset = 0x800; +Int_t AliEMCAL::fgThreshold = 1; +// 24*48=1152 towers per SM; divided up on 3 DDLs, +// each DDL with 12FEC *32towers or 12*32*2 channels (high&low gain) +Int_t AliEMCAL::fgChannelsPerDDL = 768; // 2*(1152/3 or 12*32) + //____________________________________________________________________________ AliEMCAL::AliEMCAL():AliDetector() { // Default ctor - fName="EMCAL"; - //fQATask = 0; - fTreeQA = 0; - fGeom = 0 ; + fName = "EMCAL" ; } //____________________________________________________________________________ AliEMCAL::AliEMCAL(const char* name, const char* title): AliDetector(name,title) { // ctor : title is used to identify the layout - - //fQATask = 0; - fTreeQA = 0; + + 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 } //____________________________________________________________________________ @@ -69,15 +86,34 @@ AliEMCAL::~AliEMCAL() } +//____________________________________________________________________________ +void AliEMCAL::Copy(AliEMCAL & emcal) const +{ + TObject::Copy(emcal) ; + emcal.fHighCharge = fHighCharge ; + emcal.fHighGain = fHighGain ; + emcal.fHighLowGainFactor = fHighLowGainFactor ; + emcal.fLowGainOffset = fLowGainOffset; +} + +//____________________________________________________________________________ +AliDigitizer* AliEMCAL::CreateDigitizer(AliRunDigitizer* manager) const +{ + return new AliEMCALDigitizer(manager); +} + //____________________________________________________________________________ void AliEMCAL::CreateMaterials() { // 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$", 207.2, 82, 11.35, 0.56, 0., 0, 0) ; @@ -95,10 +131,11 @@ void AliEMCAL::CreateMaterials() AliMaterial(3, "Al$", 26.98, 13., 2.7, 8.9, 999., 0, 0) ; // --- Absorption length is ignored ^ - // --- Copper --- - AliMaterial(4, "Cu$", 63.546, 29, 8.96, 1.43, 14.8, 0, 0) ; - // --- Absorption length is ignored ^ - + // 25-aug-04 by PAI - see PMD/AliPMDv0.cxx for STEEL definition + Float_t asteel[4] = { 55.847,51.9961,58.6934,28.0855 }; + Float_t zsteel[4] = { 26.,24.,28.,14. }; + Float_t wsteel[4] = { .715,.18,.1,.005 }; + AliMixture(4, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel); // DEFINITION OF THE TRACKING MEDIA @@ -106,135 +143,358 @@ void AliEMCAL::CreateMaterials() 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) ; - // Copper for HCal (post shower) -> idtmed[1603] - AliMedium(4, "Copper $", 4, 0, + // 25-aug-04 by PAI : see PMD/AliPMDv0.cxx for STEEL definition -> idtmed[1603] + AliMedium(4, "S steel$", 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) ; -// --- in copper parts --- - gMC->Gstpar(idtmed[1603], "LOSS",3.) ; - gMC->Gstpar(idtmed[1603], "DRAY",1.) ; - gMC->Gstpar(idtmed[1603], "DCUTE",0.00001) ; - gMC->Gstpar(idtmed[1603], "DCUTM",0.00001) ; +// --- and finally thresholds for photons and electrons in the scintillator --- + 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(fLoader) ; + // get the digits + loader->LoadDigits(); + TClonesArray* digits = loader->Digits() ; -// --- 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) ; + if (!digits) { + Error("Digits2Raw", "no digits found !"); + return; + } + // get the digitizer + loader->LoadDigitizer(); + AliEMCALDigitizer * digitizer = dynamic_cast(loader->Digitizer()) ; + -} + AliAltroBuffer* buffer = NULL; + Int_t prevDDL = -1; + Int_t adcValuesLow[fkTimeBins]; + Int_t adcValuesHigh[fkTimeBins]; + + // loop over digits (assume ordered digits) + for (Int_t iDigit = 0; iDigit < digits->GetEntries(); iDigit++) { + AliEMCALDigit* digit = dynamic_cast(digits->At(iDigit)) ; + if (digit->GetAmp() < fgThreshold) + continue; + Int_t iDDL = digit->GetId() / fgChannelsPerDDL ; + // for each DDL id is numbered from 1 to fgChannelsperDDL -1 + Int_t idDDL = digit->GetId() - iDDL * ( fgChannelsPerDDL - 1 ) ; + // new DDL + if (iDDL != prevDDL) { + // write real header and close previous file + if (buffer) { + buffer->Flush(); + buffer->WriteDataHeader(kFALSE, kFALSE); + delete buffer; + } -//____________________________________________________________________________ -AliEMCALGeometry * AliEMCAL::GetGeometry() const -{ - // gets the pointer to the AliEMCALGeometry unique instance - - if (fGeom) - return fGeom ; - else - return AliEMCALGeometry::GetInstance(GetTitle(),"") ; + // open new file and write dummy header + TString fileName("EMCAL_") ; + fileName += (iDDL + fgDDLOffset) ; + fileName += ".ddl" ; + buffer = new AliAltroBuffer(fileName.Data(), 1); + buffer->WriteDataHeader(kTRUE, kFALSE); //Dummy; + + prevDDL = iDDL; + } + + // out of time range signal (?) + if (digit->GetTimeR() > GetRawFormatTimeMax() ) { + buffer->FillBuffer(digit->GetAmp()); + buffer->FillBuffer(GetRawFormatTimeBins() ); // time bin + buffer->FillBuffer(3); // bunch length + buffer->WriteTrailer(3, idDDL, 0, 0); // trailer + + // calculate the time response function + } else { + Double_t energy = 0 ; + energy = digit->GetAmp() * digitizer->GetECAchannel() + digitizer->GetECApedestal() ; + + Bool_t lowgain = RawSampledResponse(digit->GetTimeR(), energy, adcValuesHigh, adcValuesLow) ; + + if (lowgain) + buffer->WriteChannel(iDDL, 0, fLowGainOffset, + GetRawFormatTimeBins(), adcValuesLow, fgThreshold); + else + buffer->WriteChannel(iDDL, 0, 0, + GetRawFormatTimeBins(), adcValuesHigh, fgThreshold); + + } + } + + // write real header and close last file + if (buffer) { + buffer->Flush(); + buffer->WriteDataHeader(kFALSE, kFALSE); + delete buffer; + } + + loader->UnloadDigits(); } //____________________________________________________________________________ -void AliEMCAL::SetTreeAddress() -{ +void AliEMCAL::Raw2Digits(AliRawReader* reader) +{ + // convert digits of the current event to raw data + AliEMCALLoader * loader = dynamic_cast(fLoader) ; + + // get the digits + loader->CleanDigits(); // start from scratch + loader->LoadDigits(); + 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(loader->Digitizer()) ; - TBranch *branch; - char branchname[20]; - sprintf(branchname,"%s",GetName()); + // Use AliAltroRawStream to read the ALTRO format. No need to + // reinvent the wheel :-) + AliEMCALRawStream in(reader); + // Select EMCAL DDL's; lowest 8 bits of DDL offser is used for something else.. + reader->Select(fgDDLOffset >> 8); + + // 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"); - // Branch address for hit tree - TTree *treeH = TreeH(); - if (treeH) { - branch = treeH->GetBranch(branchname); - if (branch) - { - if (fHits == 0x0) fHits= new TClonesArray("AliEMCALHit",1000); - //Info("SetTreeAddress","<%s> Setting Hits Address",GetName()); - branch->SetAddress(&fHits); + Int_t id = -1; + Bool_t lowGainFlag = kFALSE ; + + 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.IsNewId() ) { + if (!first) { + FitRaw(lowGainFlag, gLowGain, gHighGain, signalF, energy, time) ; + + if (time == 0. && energy == 0.) { + amp = 0 ; + } + else { + amp = static_cast( (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 = in.GetId() ; + if (in.GetModule() == GetRawFormatLowGainOffset() ) { + lowGainFlag = kTRUE ; } - else - { - Warning("SetTreeAddress","<%s> Failed",GetName()); + else { + lowGainFlag = kFALSE ; } - } + } // new Id? + 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::WriteQA() + +//____________________________________________________________________________ +void AliEMCAL::FitRaw(Bool_t lowGainFlag, TGraph * gLowGain, TGraph * gHighGain, TF1* signalF, Double_t & energy, Double_t & time) { - - // Make TreeQA in the output file. - - if(fTreeQA == 0) - fTreeQA = new TTree("TreeQA", "QA Alarms") ; - // Create Alarms branches - Int_t bufferSize = 32000 ; - Int_t splitlevel = 0 ; - - TFolder* topfold = GetLoader()->GetTopFolder(); //get top aliroot folder; skowron - TString emcalqafn(AliConfig::Instance()->GetQAFolderName()+"/"); //get name of QAaut folder relative to top event; skowron - emcalqafn+=GetName(); //hard wired string!!! add the detector name to the pathname; skowron - TFolder * alarmsF = (TFolder*)topfold->FindObjectAny(emcalqafn); //get the folder - - if (alarmsF == 0x0) - { - Error("WriteQA","Can not find folder with qa alarms"); - return; + // 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() ; } - TString branchName(alarmsF->GetName()); - TBranch * alarmsBranch = fTreeQA->Branch(branchName,"TFolder", &alarmsF, bufferSize, splitlevel); - TString branchTitle = branchName + " QA alarms" ; - alarmsBranch->SetTitle(branchTitle); - alarmsBranch->Fill() ; + } 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() ; + } + } - //fTreeQA + return; +} + +//____________________________________________________________________________ +void AliEMCAL::Hits2SDigits() +{ +// create summable digits + + 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) @@ -242,3 +502,70 @@ AliLoader* AliEMCAL::MakeLoader(const char* topfoldername) fLoader = new AliEMCALLoader(GetName(),topfoldername); return fLoader; } + +//__________________________________________________________________ +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 + + 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) +{ + 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(signal+0.5) > kRawSignalOverflow ){ // larger than 10 bits + signal = kRawSignalOverflow ; + lowGain = kTRUE ; + } + adcH[iTime] = static_cast(signal + 0.5) ; + + signalF.SetParameter(0, GetRawFormatLowCharge() ) ; + signalF.SetParameter(1, GetRawFormatLowGain() ) ; + signal = signalF.Eval(time) ; + if ( static_cast(signal+0.5) > kRawSignalOverflow) // larger than 10 bits + signal = kRawSignalOverflow ; + adcL[iTime] = static_cast(0.5 + signal ) ; + + } + return lowGain ; +}