#include <TFolder.h>
#include <TTree.h>
#include <TVirtualMC.h>
+#include <TH1F.h>
+#include <TF1.h>
+#include <TRandom.h>
// --- Standard library ---
// --- AliRoot header files ---
#include "AliMagF.h"
-#include "AliESDCaloTrack.h"
-#include "AliESD.h"
#include "AliEMCAL.h"
#include "AliEMCALGetter.h"
#include "AliRun.h"
#include "AliEMCALSDigitizer.h"
#include "AliEMCALDigitizer.h"
-#include "AliEMCALReconstructioner.h"
+#include "AliAltroBuffer.h"
ClassImp(AliEMCAL)
//____________________________________________________________________________
AliEMCAL::AliEMCAL():AliDetector()
{
// Default ctor
- fName="EMCAL";
- fGeom = 0 ;
+ fName = "EMCAL" ;
}
//____________________________________________________________________________
AliEMCAL::AliEMCAL(const char* name, const char* title): AliDetector(name,title)
{
// ctor : title is used to identify the layout
- fGeom = 0;
+
+ fTimeMax = 1.28E-5 ;
+ fTimePeak = 2.0E-6 ;
+ fTimeRes = 1.5E-6 ;
+ fHighGainFactor = 40;
+ fHighGainOffset = 0x200 ;
}
//____________________________________________________________________________
// 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) ;
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]
gMC->Gstpar(idtmed[1601],"CUTELE",0.001) ;
gMC->Gstpar(idtmed[1601],"BCUTE",0.0001) ;
-}
+ //set constants for Birk's Law implentation
+ fBirkC0 = 1;
+ fBirkC1 = 0.013/dP;
+ fBirkC2 = 9.6e-6/(dP * dP);
+
+}
+
//____________________________________________________________________________
-void AliEMCAL::FillESD(AliESD* esd) const
+void AliEMCAL::Digits2Raw()
{
- // Fill the ESD with all RecParticles
- AliEMCALGetter *gime = AliEMCALGetter::Instance( (fLoader->GetRunLoader()->GetFileName()).Data() );
- gime->Event(gime->EventNumber(), "P") ;
- TClonesArray *recParticles = gime->RecParticles();
- Int_t nOfRecParticles = recParticles->GetEntries();
- for (Int_t recpart=0; recpart<nOfRecParticles; recpart++) {
- AliESDCaloTrack *ct = new AliESDCaloTrack((AliEMCALRecParticle*)recParticles->At(recpart));
- esd->AddCaloTrack(ct);
- delete ct;
+// convert digits of the current event to raw data
+
+ // get the digits
+ AliEMCALGetter * gime = AliEMCALGetter::Instance(AliRunLoader::GetGAliceName()) ;
+ if (!gime) {
+ Error("Digits2Raw", "EMCAL Getter not instantiated") ;
+ return ;
}
-}
+ gime->Event(gime->EventNumber(), "D") ;
+ TClonesArray* digits = gime->Digits() ;
+ if (!digits) {
+ Error("Digits2Raw", "no digits found !");
+ return;
+ }
+
+ // get the geometry
+ AliEMCALGeometry* geom = gime->EMCALGeometry();
+ if (!geom) {
+ Error("Digits2Raw", "no geometry found !");
+ return;
+ }
+
+ // some digitization constants
+ const Int_t kDDLOffset = 0x800;
+ const Int_t kThreshold = 3;
+ const Int_t kChannelsperDDL = 897 ;
+
+ 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 = gime->Digit(iDigit);
+ if (digit->GetAmp() < kThreshold)
+ continue;
+ Int_t iDDL = digit->GetId() / kChannelsperDDL ;
+ // for each DDL id is numbered from 1 to kChannelsperDDL -1
+ Int_t idDDL = digit->GetId() - iDDL * ( kChannelsperDDL - 1 ) ;
+ // 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("EMCAL_") ;
+ fileName += (iDDL + kDDLOffset) ;
+ fileName += ".ddl" ;
+ buffer = new AliAltroBuffer(fileName.Data(), 1);
+ buffer->WriteDataHeader(kTRUE, kFALSE); //Dummy;
+
+ prevDDL = iDDL;
+ }
+
+ // out of time range signal (?)
+ if (digit->GetTimeR() > fTimeMax) {
+ buffer->FillBuffer(digit->GetAmp());
+ buffer->FillBuffer(fkTimeBins); // time bin
+ buffer->FillBuffer(3); // bunch length
+ buffer->WriteTrailer(3, idDDL, 0, 0); // trailer
+
+ // simulate linear rise and gaussian decay of signal
+ } else {
+ Bool_t highGain = kFALSE;
+
+ // write low and eventually high gain channel
+ buffer->WriteChannel(iDDL, 0, 0,
+ fkTimeBins, adcValuesLow, kThreshold);
+ if (highGain) {
+ buffer->WriteChannel(iDDL, 0, fHighGainOffset,
+ fkTimeBins, adcValuesHigh, 1);
+ }
+ }
+ }
+ // write real header and close last file
+ if (buffer) {
+ buffer->Flush();
+ buffer->WriteDataHeader(kFALSE, kFALSE);
+ delete buffer;
+ }
+ gime->EmcalLoader()->UnloadDigits();
+}
//____________________________________________________________________________
void AliEMCAL::Hits2SDigits()
emcalDigitizer->ExecuteTask() ;
}
-//____________________________________________________________________________
-void AliEMCAL::Reconstruct() const
-{
- AliEMCALReconstructioner * rec = new AliEMCALReconstructioner((fLoader->GetRunLoader()->GetFileName()).Data()) ;
- rec->SetEventRange(0, -1) ; // do all the events
- rec->ExecuteTask() ;
-}
-
//____________________________________________________________________________
AliLoader* AliEMCAL::MakeLoader(const char* topfoldername)
{
return fLoader;
}
+//__________________________________________________________________
+Double_t AliEMCAL::RawResponseFunction(Double_t *x, Double_t *par)
+{
+ // Shape of the electronics raw reponse:
+ // 1. the signal rises linearly from par[4] to par[1] to reach the maximu par[3]
+ // 2. the signal decays with a gaussian shape for par[4]+par[1] with a sigma of par[2]
+
+ Float_t xx = x[0] ;
+
+ Double_t signal = 0. ;
+
+ if (xx < par[4] + par[1]) // signal is rising
+ signal = (gRandom->Rndm() + par[3]) * (xx - par[4]) / (par[1] - par[4]) ;
+ else // signal is decaying
+ signal = (gRandom->Rndm() + par[3]) * TMath::Gaus(xx, par[4] + par[1], par[2]) ;
+
+ return signal < 0. ? 0. : signal ;
+}
+
+//__________________________________________________________________
+Bool_t AliEMCAL::RawSampledResponse(const Float_t dtime, const Int_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
+
+ const Int_t kRawSignalOverflow = 0x3FF ;
+ Bool_t highGain = kFALSE ;
+
+ TF1 f1("signal", RawResponseFunction, 0, fkTimeBins, 5);
+
+ f1.SetParNames("Time Max", "Peaking time", "Decay width", "Amp max", "Start time") ;
+ f1.SetParameter(0, fTimeMax) ;
+ f1.SetParameter(1, fTimePeak) ;
+ f1.SetParameter(2, fTimeRes) ;
+ f1.SetParameter(3, damp) ;
+ f1.SetParameter(4, dtime) ;
+
+ for (Int_t iTime = 0; iTime < fkTimeBins; iTime++) {
+ Double_t time = iTime * fTimeMax/fkTimeBins;
+ Double_t signal = f1.Eval(time) ;
+ adcL[iTime] = static_cast<Int_t>(signal + 0.5) ;
+ if ( adcL[iTime] > kRawSignalOverflow) // larger than 10 bits
+ adcL[iTime] = kRawSignalOverflow ;
+ adcH[iTime] = static_cast<Int_t>(0.5 + (signal / fHighGainFactor)) ;
+ if (adcH[iTime] > 0)
+ highGain = kTRUE;
+ }
+ return highGain ;
+}
+
//____________________________________________________________________________
void AliEMCAL::SetTreeAddress()
{
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff