#include <TGeoPhysicalNode.h>
#include <AliGeomManager.h>
#include <TRandom.h>
+#include <TF1.h>
+#include <TH1F.h>
// --- AliRoot header files ---
-#include "AliVZEROConst.h"
#include "AliRun.h"
#include "AliVZERO.h"
#include "AliVZEROhit.h"
#include "AliRunLoader.h"
#include "AliLoader.h"
#include "AliGRPObject.h"
-#include "AliRunDigitizer.h"
+#include "AliDigitizationInput.h"
#include "AliCDBManager.h"
#include "AliCDBStorage.h"
#include "AliCDBEntry.h"
#include "AliVZEROCalibData.h"
-
+#include "AliCTPTimeParams.h"
+#include "AliLHCClockPhase.h"
#include "AliVZEROdigit.h"
#include "AliVZERODigitizer.h"
+#include "AliVZEROSDigit.h"
ClassImp(AliVZERODigitizer)
:AliDigitizer(),
fCalibData(GetCalibData()),
fPhotoCathodeEfficiency(0.18),
- fPMVoltage(768.0),
- fPMGain(TMath::Power((fPMVoltage / 112.5) ,7.04277)),
fNdigits(0),
fDigits(0),
- fCollisionMode(0),
- fBeamEnergy(0.)
-
+ fSignalShape(NULL),
+ fPMResponse(NULL),
+ fSinglePhESpectrum(NULL),
+ fEvenOrOdd(kFALSE),
+ fTask(kHits2Digits),
+ fVZERO(NULL)
{
// default constructor
+ // Initialize OCDB and containers used in the digitization
-// fNdigits = 0;
-// fDigits = 0;
-//
-// fPhotoCathodeEfficiency = 0.18;
-// fPMVoltage = 768.0;
-// fPMGain = TMath::Power((fPMVoltage / 112.5) ,7.04277);
-
-// fCalibData = GetCalibData();
+ Init();
}
//____________________________________________________________________________
- AliVZERODigitizer::AliVZERODigitizer(AliRunDigitizer* manager)
- :AliDigitizer(manager),
+ AliVZERODigitizer::AliVZERODigitizer(AliVZERO *vzero, DigiTask_t task)
+ :AliDigitizer(),
fCalibData(GetCalibData()),
fPhotoCathodeEfficiency(0.18),
- fPMVoltage(768.0),
- fPMGain(TMath::Power((fPMVoltage / 112.5) ,7.04277)),
fNdigits(0),
fDigits(0),
- fCollisionMode(0),
- fBeamEnergy(0.)
-
+ fSignalShape(NULL),
+ fPMResponse(NULL),
+ fSinglePhESpectrum(NULL),
+ fEvenOrOdd(kFALSE),
+ fTask(task),
+ fVZERO(vzero)
{
// constructor
-
-// fNdigits = 0;
-// fDigits = 0;
-//
-// fPhotoCathodeEfficiency = 0.18;
-// fPMVoltage = 768.0;
-// fPMGain = TMath::Power( (fPMVoltage / 112.5) ,7.04277 );
-
-// fCalibData = GetCalibData();
-
+ // Initialize OCDB and containers used in the digitization
+
+ Init();
+}
+
+//____________________________________________________________________________
+ AliVZERODigitizer::AliVZERODigitizer(AliDigitizationInput* digInput)
+ :AliDigitizer(digInput),
+ fCalibData(GetCalibData()),
+ fPhotoCathodeEfficiency(0.18),
+ fNdigits(0),
+ fDigits(0),
+ fSignalShape(NULL),
+ fPMResponse(NULL),
+ fSinglePhESpectrum(NULL),
+ fEvenOrOdd(kFALSE),
+ fTask(kHits2Digits),
+ fVZERO(NULL)
+{
+ // constructor
+ // Initialize OCDB and containers used in the digitization
+
+ Init();
}
//____________________________________________________________________________
delete fDigits;
fDigits=0;
}
+
+ if (fSignalShape) {
+ delete fSignalShape;
+ fSignalShape = NULL;
+ }
+ if (fPMResponse) {
+ delete fPMResponse;
+ fPMResponse = NULL;
+ }
+ if (fSinglePhESpectrum) {
+ delete fSinglePhESpectrum;
+ fSinglePhESpectrum = NULL;
+ }
+
+ for(Int_t i = 0 ; i < 64; ++i) {
+ if (fTime[i]) delete [] fTime[i];
+ }
}
//_____________________________________________________________________________
Bool_t AliVZERODigitizer::Init()
{
// Initialises the digitizer
-
- // Initialises the Digit array
- fDigits = new TClonesArray ("AliVZEROdigit", 1000);
+ // Initialize OCDB and containers used in the digitization
+
+ // check if the digitizer was already initialized
+ if (fSignalShape) return kTRUE;
+
+ fSignalShape = new TF1("VZEROSignalShape",this,&AliVZERODigitizer::SignalShape,0,200,6,"AliVZERODigitizer","SignalShape");
+ // fSignalShape->SetParameters(0,1.57345e1,-4.25603e-1,2.9,6.40982,3.69339e-01);
+ // fSignalShape->SetParameters(1.34330e+00,1.13007e+02,-4.95705e-01,
+ // 3.68911e+00,1.01040e+00, 3.94675e-01);
+ fSignalShape->SetParameters(-1.07335e+00,2.16002e+01,-1.26133e-01,
+ 1.41619e+00,5.50334e-01,3.86111e-01);
+ fPMResponse = new TF1("VZEROPMResponse",this,&AliVZERODigitizer::PMResponse,-kPMRespTime,2.*kPMRespTime,0,"AliVZERODigitizer","PMResponse");
+ fSinglePhESpectrum = new TF1("VZEROSinglePhESpectrum",this,&AliVZERODigitizer::SinglePhESpectrum,0,20,0,"AliVZERODigitizer","SinglePhESpectrum");
- // TGeoHMatrix *im = AliGeomManager::GetMatrix("VZERO/V0C");
- // im->Print();
+ // Now get the CTP L0->L1 delay
+ AliCDBEntry *entry = AliCDBManager::Instance()->Get("GRP/CTP/CTPtiming");
+ if (!entry) AliFatal("CTP timing parameters are not found in OCDB !");
+ AliCTPTimeParams *ctpParams = (AliCTPTimeParams*)entry->GetObject();
+ Float_t l1Delay = (Float_t)ctpParams->GetDelayL1L0()*25.0;
+
+ AliCDBEntry *entry1 = AliCDBManager::Instance()->Get("GRP/CTP/TimeAlign");
+ if (!entry1) AliFatal("CTP time-alignment is not found in OCDB !");
+ AliCTPTimeParams *ctpTimeAlign = (AliCTPTimeParams*)entry1->GetObject();
+ l1Delay += ((Float_t)ctpTimeAlign->GetDelayL1L0()*25.0);
+
+ AliCDBEntry *entry2 = AliCDBManager::Instance()->Get("VZERO/Calib/TimeDelays");
+ if (!entry2) AliFatal("VZERO time delays are not found in OCDB !");
+ TH1F *delays = (TH1F*)entry2->GetObject();
+
+ AliCDBEntry *entry3 = AliCDBManager::Instance()->Get("GRP/Calib/LHCClockPhase");
+ if (!entry3) AliFatal("LHC clock-phase shift is not found in OCDB !");
+ AliLHCClockPhase *phase = (AliLHCClockPhase*)entry3->GetObject();
+
+ for(Int_t i = 0 ; i < 64; ++i) {
+
+ for(Int_t j = 0; j < kNClocks; ++j) fAdc[i][j] = 0;
+ fLeadingTime[i] = fTimeWidth[i] = 0;
+
+ fPmGain[i] = fCalibData->GetGain(i);
+
+ fAdcPedestal[i][0] = fCalibData->GetPedestal(i);
+ fAdcSigma[i][0] = fCalibData->GetSigma(i);
+ fAdcPedestal[i][1] = fCalibData->GetPedestal(i+64);
+ fAdcSigma[i][1] = fCalibData->GetSigma(i+64);
+
+ Int_t board = AliVZEROCalibData::GetBoardNumber(i);
+ fNBins[i] = TMath::Nint(((Float_t)(fCalibData->GetMatchWindow(board)+1)*25.0+
+ (Float_t)kMaxTDCWidth*fCalibData->GetWidthResolution(board))/
+ fCalibData->GetTimeResolution(board));
+ fNBinsLT[i] = TMath::Nint(((Float_t)(fCalibData->GetMatchWindow(board)+1)*25.0)/
+ fCalibData->GetTimeResolution(board));
+ fBinSize[i] = fCalibData->GetTimeResolution(board);
+ fHptdcOffset[i] = (((Float_t)fCalibData->GetRollOver(board)-
+ (Float_t)fCalibData->GetTriggerCountOffset(board))*25.0+
+ fCalibData->GetTimeOffset(i)-
+ l1Delay-
+ phase->GetMeanPhase()+
+ delays->GetBinContent(i+1)+
+ kV0Offset);
+ fClockOffset[i] = (((Float_t)fCalibData->GetRollOver(board)-
+ (Float_t)fCalibData->GetTriggerCountOffset(board))*25.0+
+ fCalibData->GetTimeOffset(i)-
+ l1Delay+
+ kV0Offset);
+
+ fTime[i] = new Float_t[fNBins[i]];
+ memset(fTime[i],0,fNBins[i]*sizeof(Float_t));
+ }
- GetCollisionMode();
return kTRUE;
}
//____________________________________________________________________________
-void AliVZERODigitizer::Exec(Option_t* /*option*/)
+void AliVZERODigitizer::Digitize(Option_t* /*option*/)
{
// Creates digits from hits
-
- Int_t map[80]; // 48 values on V0C + 32 on V0A
-// Int_t pmNumber[80];
- Int_t adc[64]; // 32 PMs on V0C + 32 PMs on V0A
- Float_t time[80], time_ref[80], time2[64];
- Float_t adc_gain[80];
- Float_t adc_pedestal[64],adc_sigma[64];
- fNdigits = 0;
- Float_t pmGain_smeared[64];
- Float_t cPM[80];
-
- // Smearing of the PM tubes intrinsic characteristics
-
- for(Int_t ii=0; ii<64; ii++) {
- pmGain_smeared[ii] = gRandom->Gaus(fPMGain, fPMGain/5); }
-
- // Retrieval of ADC gain values and pedestal information from local CDB
- // I use only the first 64th values of the calibration array in CDB
- // as I have no beam burst structure - odd or even beam burst number
-
- // Reminder : We have 16 scintillating cells mounted on 8 PMs
- // on Ring 3 and Ring 4 in V0C - added to produce ADC outputs
- // on these rings...
-
- for(Int_t i=0; i<16; i++) {
- adc_gain[i] = fCalibData->GetGain(i);
- cPM[i] = fPhotoCathodeEfficiency * pmGain_smeared[i];
- }
-
- for(Int_t j=16; j<48; j=j+2) {
- Int_t i=(j+17)/2;
- adc_gain[j] = fCalibData->GetGain(i);
- adc_gain[j+1] = fCalibData->GetGain(i);
- cPM[j] = fPhotoCathodeEfficiency * pmGain_smeared[i];
- cPM[j+1] = fPhotoCathodeEfficiency * pmGain_smeared[i];
+ fNdigits = 0;
+
+ if (fVZERO && !fDigInput) {
+ AliLoader *loader = fVZERO->GetLoader();
+ if (!loader) {
+ AliError("Can not get VZERO Loader via AliVZERO object!");
+ return;
+ }
+ AliRunLoader* runLoader = AliRunLoader::Instance();
+ for (Int_t iEvent = 0; iEvent < runLoader->GetNumberOfEvents(); ++iEvent) {
+ runLoader->GetEvent(iEvent);
+ if (fTask == kHits2Digits) {
+ DigitizeHits();
+ DigitizeSDigits();
+ WriteDigits(loader);
+ }
+ else {
+ DigitizeHits();
+ WriteSDigits(loader);
+ }
+ }
}
-
- for(Int_t i=48; i<80; i++){
- adc_gain[i] = fCalibData->GetGain(i-16);
- cPM[i] = fPhotoCathodeEfficiency * pmGain_smeared[i-16];
- };
-
- for(Int_t i=0; i<64; i++){
- adc_pedestal[i] = fCalibData->GetPedestal(i);
- adc_sigma[i] = fCalibData->GetSigma(i);
- };
-
-// for(Int_t i=0; i<64; i++) { printf(" i = %d pedestal = %f sigma = %f \n\n",
-// i, adc_pedestal[i], adc_sigma[i] );}
-
- AliRunLoader* outRunLoader = AliRunLoader::GetRunLoader(fManager->GetOutputFolderName());
- if (!outRunLoader) {
- Error("Exec", "Can not get output Run Loader");
- return;
+ else if (fDigInput) {
+ ReadSDigits();
+ DigitizeSDigits();
+ AliRunLoader *currentLoader = AliRunLoader::GetRunLoader(fDigInput->GetOutputFolderName());
+ AliLoader *loader = currentLoader->GetLoader("VZEROLoader");
+ if (!loader) {
+ AliError("Cannot get VZERO Loader via RunDigitizer!");
+ return;
+ }
+ WriteDigits(loader);
}
-
- AliLoader* outLoader = outRunLoader->GetLoader("VZEROLoader");
-
- if (!outLoader) {
- Error("Exec", "Can not get output VZERO Loader");
- return;
+ else {
+ AliFatal("Invalid digitization task! Exiting!");
}
-
- const char* mode = "update";
- if(outRunLoader->GetEventNumber() == 0) mode = "recreate";
- outLoader->LoadDigits(mode);
-
- if (!outLoader->TreeD()) outLoader->MakeTree("D");
- outLoader->MakeDigitsContainer();
- TTree* treeD = outLoader->TreeD();
- Int_t bufsize = 16000;
- treeD->Branch("VZERODigit", &fDigits, bufsize);
-
- for (Int_t iInput = 0; iInput < fManager->GetNinputs(); iInput++) {
- AliRunLoader* runLoader = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(iInput));
- AliLoader* loader = runLoader->GetLoader("VZEROLoader");
- if (!loader) {
- Error("Exec", "Can not get VZERO Loader for input %d", iInput);
- continue;
- }
-
- if (!runLoader->GetAliRun()) runLoader->LoadgAlice();
-
- AliVZERO* vzero = (AliVZERO*) runLoader->GetAliRun()->GetDetector("VZERO");
- if (!vzero) {
- Error("Exec", "No VZERO detector for input %d", iInput);
- continue;
- }
-
- loader->LoadHits();
- TTree* treeH = loader->TreeH();
- if (!treeH) {
- Error("Exec", "Cannot get TreeH for input %d", iInput);
- continue;
- }
-
- for(Int_t i=0; i<80; i++) {map[i] = 0; time[i] = 0.0;}
-
- TClonesArray* hits = vzero->Hits();
-
-// Now makes Digits from hits
-
- Int_t nTracks = (Int_t) treeH->GetEntries();
- for (Int_t iTrack = 0; iTrack < nTracks; iTrack++) {
- for (Int_t i=0; i<80; i++) {time_ref[i] = 999999.0;}
- vzero->ResetHits();
- treeH->GetEvent(iTrack);
- Int_t nHits = hits->GetEntriesFast();
- for (Int_t iHit = 0; iHit < nHits; iHit++) {
- AliVZEROhit* hit = (AliVZEROhit *)hits->UncheckedAt(iHit);
- Int_t nPhot = hit->Nphot();
- Int_t cell = hit->Cell();
- map[cell] += nPhot;
- Float_t dt_scintillator = gRandom->Gaus(0,0.7);
- Float_t t = dt_scintillator + 1e9*hit->Tof();
- if (t > 0.0) {
- if(t < time_ref[cell]) time_ref[cell] = t;
- time[cell] = TMath::Min(t,time_ref[cell]);
- }
- } // hit loop
- } // track loop
-
- loader->UnloadHits();
-
- } // input loop
-
-// Now builds the scintillator cell response (80 cells i.e. 80 responses)
-
- for (Int_t i=0; i<80; i++) {
- Float_t q1 = Float_t ( map[i] )* cPM[i] * kQe;
- Float_t noise = gRandom->Gaus(10.5,3.22);
- Float_t pmResponse = q1/kC*TMath::Power(ktheta/kthau,1/(1-ktheta/kthau))
- + noise*1e-3;
- if(fCollisionMode >0) adc_gain[i] = adc_gain[i]/70.0; // reduce dynamics in Ion Collision Mode
- map[i] = Int_t( pmResponse * adc_gain[i]);
- Float_t MIP = 1.0/fCalibData->GetMIPperADC(GetPMNumber(i));
- if(fCollisionMode >0) MIP=2.0;
-// printf("cell = %d, ADC = %d, TDC = %f \n",i,map[i], time[i]*10.0 );
- if(map[i] > (int(( MIP/2 ) + 0.5)) )
- {map[i] = Int_t(gRandom->Gaus(map[i], (int(( MIP/6 ) + 0.5)) ));}
- }
-
-// Now transforms 80 cell responses into 64 photomultiplier responses
-// Also adds the ADC pedestals taken out of the calibration data base
-
- for (Int_t j=0; j<16; j++){
- adc[j] = static_cast<Int_t>(map [j] + gRandom->Gaus(adc_pedestal[j], adc_sigma[j]));
- time2[j]= time[j];}
-
- for (Int_t j=48; j<80; j++){
- adc[j-16] = static_cast<Int_t>(map [j]
- + gRandom->Gaus(adc_pedestal[j-16],adc_sigma[j-16]));
- time2[j-16]= time[j]; }
-
- for (Int_t j=0; j<16; j++){
- adc[16+j] = static_cast<Int_t>(map [16+2*j]+ map [16+2*j+1]
- + gRandom->Gaus(adc_pedestal[16+j], adc_sigma[16+j]));
- Float_t min_time = TMath::Min(time [16+2*j],time [16+2*j+1]);
- time2[16+j] = min_time;
- if(min_time==0.0){time2[16+j]=TMath::Max(time[16+2*j],time[16+2*j+1]);}
- }
-
-
-// Now add digits to the digit Tree
-
- for (Int_t i=0; i<64; i++) {
- if(adc[i] > 0) {
-// printf(" Event, cell, adc, tof = %d %d %d %d\n",
-// outRunLoader->GetEventNumber(),i, adc[i], Int_t((time2[i]*10.0) +0.5));
-// multiply by 10 to have 100 ps per channel :
-
- AddDigit(i, adc[i], Int_t((time2[i]*10.0) +0.5)) ;
- }
- }
- treeD->Fill();
- outLoader->WriteDigits("OVERWRITE");
- outLoader->UnloadDigits();
- ResetDigit();
}
//____________________________________________________________________________
-void AliVZERODigitizer::AddDigit(Int_t PMnumber, Int_t adc, Int_t time)
+void AliVZERODigitizer::AddDigit(Int_t pmnumber, Float_t time, Float_t width, Bool_t integrator, Short_t *chargeADC, Int_t *labels)
{
// Adds Digit
TClonesArray &ldigits = *fDigits;
- Bool_t integrator;
- if (((Int_t) gRandom->Uniform(2))<1) integrator = kFALSE;
- else integrator = kTRUE;
- new(ldigits[fNdigits++]) AliVZEROdigit(PMnumber,adc,time,0,kFALSE,kFALSE,integrator);
+ new(ldigits[fNdigits++]) AliVZEROdigit(pmnumber,time,width,integrator,chargeADC,labels);
}
//____________________________________________________________________________
-void AliVZERODigitizer::ResetDigit()
-{
-
-// Clears Digits
-
- fNdigits = 0;
- if (fDigits) fDigits->Delete();
+void AliVZERODigitizer::AddSDigit(Int_t pmnumber, Int_t nbins, Float_t *charges, Int_t *labels)
+ {
+
+// Adds SDigit
+
+ TClonesArray &ldigits = *fDigits;
+
+ new(ldigits[fNdigits++]) AliVZEROSDigit(pmnumber,nbins,charges,labels);
+
}
-
//____________________________________________________________________________
-void AliVZERODigitizer::GetCollisionMode()
+void AliVZERODigitizer::ResetDigits()
{
-// Retrieves the collision mode from GRP data
-
-// Initialization of the GRP entry
-
- Int_t run = AliCDBManager::Instance()->GetRun();
-
-// printf("\n ++++++ Run Number retrieved as %d \n",run);
-
- AliCDBEntry* entry = AliCDBManager::Instance()->Get("GRP/GRP/Data",run);
- AliGRPObject* grpData = 0x0;
-
- if(entry){
- TMap* m = dynamic_cast<TMap*>(entry->GetObject()); // old GRP entry
- if(m){
- m->Print();
- grpData = new AliGRPObject();
- grpData->ReadValuesFromMap(m);
- }
- else{
- grpData = dynamic_cast<AliGRPObject*>(entry->GetObject()); // new GRP entry
- entry->SetOwner(0);
- }
- AliCDBManager::Instance()->UnloadFromCache("GRP/GRP/Data");
- }
-
- if(!grpData) AliError("No GRP entry found in OCDB!");
-
-// Retrieval of collision mode
-
- TString beamType = grpData->GetBeamType();
- if(beamType==AliGRPObject::GetInvalidString()){
- AliError("GRP/GRP/Data entry: missing value for the beam type !");
- AliError("\t VZERO cannot retrieve beam type\n");
- return;
- }
- if( (beamType.CompareTo("P-P") ==0) || (beamType.CompareTo("p-p") ==0) ){
- fCollisionMode=0;
- }
- else if( (beamType.CompareTo("Pb-Pb") ==0) || (beamType.CompareTo("A-A") ==0) ){
- fCollisionMode=1;
- }
-
- fBeamEnergy = grpData->GetBeamEnergy();
- if(fBeamEnergy==AliGRPObject::GetInvalidFloat()) {
- AliError("GRP/GRP/Data entry: missing value for the beam energy ! Using 0");
- fBeamEnergy = 0.;
- }
-
-// printf("\n ++++++ Beam type and collision mode retrieved as %s %d @ %1.3f GeV ++++++\n\n",beamType.Data(), fCollisionMode, fBeamEnergy);
+// Clears Digits
+ fNdigits = 0;
+ if (fDigits) fDigits->Clear();
}
//____________________________________________________________________________
}
-//____________________________________________________________________________
-Int_t AliVZERODigitizer::GetPMNumber(Int_t cell) const
+double AliVZERODigitizer::SignalShape(double *x, double *par)
+{
+ // this function simulates the time
+ // of arrival of the photons at the
+ // photocathode
+ Double_t xx = x[0];
+ if (xx <= par[0]) return 0;
+ Double_t a = 1./TMath::Power((xx-par[0])/par[1],1./par[2]);
+ if (xx <= par[3]) return a;
+ Double_t b = 1./TMath::Power((xx-par[3])/par[4],1./par[5]);
+ Double_t f = a*b/(a+b);
+ AliDebug(100,Form("x=%f func=%f",xx,f));
+ return f;
+}
+
+double AliVZERODigitizer::PMResponse(double *x, double * /* par */)
+{
+ // this function describes the
+ // PM time response to a single
+ // photoelectron
+ Double_t xx = x[0]+kPMRespTime;
+ return xx*xx*TMath::Exp(-xx*xx/(kPMRespTime*kPMRespTime));
+}
+
+double AliVZERODigitizer::SinglePhESpectrum(double *x, double * /* par */)
+{
+ // this function describes the
+ // PM amplitude response to a single
+ // photoelectron
+ Double_t xx = x[0];
+ if (xx < 0) return 0;
+ return (TMath::Poisson(xx,kPMNbOfSecElec)+kPMTransparency*TMath::Poisson(xx,1.0));
+}
+Int_t AliVZERODigitizer::Cell2Pmt(Int_t cell) const
{
-
- Int_t pmNumber[80] = { 0, 1, 2, 3, 4, 5, 6, 7,
- 8, 9, 10, 11, 12, 13, 14, 15,
- 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22, 23, 23,
- 24, 24, 25, 25, 26, 26, 27, 27, 28, 28, 29, 29, 30, 30, 31, 31,
- 32, 33, 34, 35, 36, 37, 38, 39,
- 40, 41, 42, 43, 44, 45, 46, 47,
- 48, 49, 50, 51, 52, 53, 54, 55,
- 56, 57, 58, 59, 60, 61, 62, 63 };
-
- return pmNumber[cell];
+ // The method maps the scintillator
+ // indexes to the PM ones
+ if (cell < 0 || cell >= 80) {
+ AliError(Form("Wrong VZERO cell index %d",cell));
+ return -1;
+ }
+ if (cell < 16) return cell;
+ if (cell < 48) return 8 + cell/2;
+ return cell - 16;
+}
+
+void AliVZERODigitizer::DigitizeHits()
+{
+ // Digitize the hits to the level of
+ // SDigits (fTime arrays)
+
+ for(Int_t i = 0 ; i < 64; ++i) {
+ memset(fTime[i],0,fNBins[i]*sizeof(Float_t));
+ fLabels[i][0] = fLabels[i][1] = fLabels[i][2] = -1;
+ }
+ Float_t integral = fPMResponse->Integral(-kPMRespTime,2.*kPMRespTime);
+ Float_t meansPhE = fSinglePhESpectrum->Mean(0,20);
+
+ AliLoader* loader = fVZERO->GetLoader();
+ if (!loader) {
+ AliError("Can not get VZERO Loader!");
+ return;
+ }
+ loader->LoadHits();
+ TTree* treeH = loader->TreeH();
+ if (!treeH) {
+ AliError("Cannot get TreeH!");
+ return;
+ }
+ TClonesArray* hits = fVZERO->Hits();
+
+// Now makes Digits from hits
+ Int_t nTracks = (Int_t) treeH->GetEntries();
+ for (Int_t iTrack = 0; iTrack < nTracks; iTrack++) {
+ fVZERO->ResetHits();
+ treeH->GetEvent(iTrack);
+ Int_t nHits = hits->GetEntriesFast();
+ for (Int_t iHit = 0; iHit < nHits; iHit++) {
+ AliVZEROhit* hit = (AliVZEROhit *)hits->UncheckedAt(iHit);
+ Int_t nPhot = hit->Nphot();
+ Int_t cell = hit->Cell();
+ Int_t pmt = Cell2Pmt(cell);
+ if (pmt < 0) continue;
+ Int_t trackLabel = hit->GetTrack();
+ for(Int_t l = 0; l < 3; ++l) {
+ if (fLabels[pmt][l] < 0) {
+ fLabels[pmt][l] = trackLabel;
+ break;
+ }
+ }
+ Float_t dt_scintillator = gRandom->Gaus(0,kIntTimeRes);
+ Float_t t = dt_scintillator + 1e9*hit->Tof();
+ if (pmt < 32) t += kV0CDelayCables;
+ t += fHptdcOffset[pmt];
+ Int_t nPhE;
+ Float_t prob = fCalibData->GetLightYields(pmt)*fPhotoCathodeEfficiency; // Optical losses included!
+ if (nPhot > 100)
+ nPhE = (Int_t)gRandom->Gaus(prob*Float_t(nPhot)+0.5,
+ sqrt(Float_t(nPhot)*prob*(1.-prob)));
+ else
+ nPhE = gRandom->Binomial(nPhot,prob);
+ Float_t charge = TMath::Qe()*fPmGain[pmt]*fBinSize[pmt]/integral;
+ for (Int_t iPhE = 0; iPhE < nPhE; ++iPhE) {
+ Float_t tPhE = t + fSignalShape->GetRandom(0,fBinSize[pmt]*Float_t(fNBins[pmt]));
+ Float_t gainVar = fSinglePhESpectrum->GetRandom(0,20)/meansPhE;
+ Int_t firstBin = TMath::Max(0,(Int_t)((tPhE-kPMRespTime)/fBinSize[pmt]));
+ Int_t lastBin = TMath::Min(fNBins[pmt]-1,(Int_t)((tPhE+2.*kPMRespTime)/fBinSize[pmt]));
+ for(Int_t iBin = firstBin; iBin <= lastBin; ++iBin) {
+ Float_t tempT = fBinSize[pmt]*(0.5+iBin)-tPhE;
+ fTime[pmt][iBin] += gainVar*charge*fPMResponse->Eval(tempT);
+ }
+ } // ph.e. loop
+ } // hit loop
+ } // track loop
+ loader->UnloadHits();
}
+void AliVZERODigitizer::DigitizeSDigits()
+{
+ // Digitize the fTime arrays (SDigits) to the level of
+ // Digits (fAdc arrays)
+ for(Int_t i = 0 ; i < 64; ++i) {
+ for(Int_t j = 0; j < kNClocks; ++j) fAdc[i][j] = 0;
+ fLeadingTime[i] = fTimeWidth[i] = 0;
+ }
+
+ Float_t maximum = 0.9*fSignalShape->GetMaximum(0,200); // Not exact, one needs to do this on the convoluted
+ Float_t integral2 = fSignalShape->Integral(0,200); // function. Anyway the effect is small <10% on the 2.5 ADC thr
+ for (Int_t ipmt = 0; ipmt < 64; ++ipmt) {
+ Float_t thr = fCalibData->GetCalibDiscriThr(ipmt,kFALSE)*kChargePerADC*maximum*fBinSize[ipmt]/integral2;
+ Bool_t ltFound = kFALSE, ttFound = kFALSE;
+ for (Int_t iBin = 0; iBin < fNBins[ipmt]; ++iBin) {
+ Float_t t = fBinSize[ipmt]*Float_t(iBin);
+ if (fTime[ipmt][iBin] > thr) {
+ if (!ltFound && (iBin < fNBinsLT[ipmt])) {
+ ltFound = kTRUE;
+ fLeadingTime[ipmt] = t;
+ }
+ }
+ else {
+ if (ltFound) {
+ if (!ttFound) {
+ ttFound = kTRUE;
+ fTimeWidth[ipmt] = t - fLeadingTime[ipmt];
+ }
+ }
+ }
+ Float_t tadc = t - fClockOffset[ipmt];
+ Int_t clock = kNClocks/2 - Int_t(tadc/25.0);
+ if (clock >= 0 && clock < kNClocks)
+ fAdc[ipmt][clock] += fTime[ipmt][iBin]/kChargePerADC;
+ }
+ AliDebug(1,Form("Channel %d Offset %f Time %f",ipmt,fClockOffset[ipmt],fLeadingTime[ipmt]));
+ Int_t board = AliVZEROCalibData::GetBoardNumber(ipmt);
+ if (ltFound && ttFound) {
+ fTimeWidth[ipmt] = fCalibData->GetWidthResolution(board)*
+ Float_t(Int_t(fTimeWidth[ipmt]/fCalibData->GetWidthResolution(board)));
+ if (fTimeWidth[ipmt] < Float_t(kMinTDCWidth)*fCalibData->GetWidthResolution(board))
+ fTimeWidth[ipmt] = Float_t(kMinTDCWidth)*fCalibData->GetWidthResolution(board);
+ if (fTimeWidth[ipmt] > Float_t(kMaxTDCWidth)*fCalibData->GetWidthResolution(board))
+ fTimeWidth[ipmt] = Float_t(kMaxTDCWidth)*fCalibData->GetWidthResolution(board);
+ }
+ }
+
+ fEvenOrOdd = gRandom->Integer(2);
+ for (Int_t j=0; j<64; ++j){
+ for (Int_t iClock = 0; iClock < kNClocks; ++iClock) {
+ Int_t integrator = (iClock + fEvenOrOdd) % 2;
+ AliDebug(1,Form("ADC %d %d %f",j,iClock,fAdc[j][iClock]));
+ fAdc[j][iClock] += gRandom->Gaus(fAdcPedestal[j][integrator], fAdcSigma[j][integrator]);
+ }
+ }
+
+}
+
+void AliVZERODigitizer::WriteDigits(AliLoader *loader)
+{
+ // Take fAdc arrays filled by the previous
+ // method and produce and add digits to the digit Tree
+
+ loader->LoadDigits("UPDATE");
+
+ if (!loader->TreeD()) loader->MakeTree("D");
+ loader->MakeDigitsContainer();
+ TTree* treeD = loader->TreeD();
+ DigitsArray();
+ treeD->Branch("VZERODigit", &fDigits);
+
+ Short_t *chargeADC = new Short_t[kNClocks];
+ for (Int_t i=0; i<64; i++) {
+ for (Int_t j = 0; j < kNClocks; ++j) {
+ Int_t tempadc = Int_t(fAdc[i][j]);
+ if (tempadc > 1023) tempadc = 1023;
+ chargeADC[j] = tempadc;
+ }
+ AddDigit(i, fLeadingTime[i], fTimeWidth[i], Bool_t((10+fEvenOrOdd)%2), chargeADC, fLabels[i]);
+ }
+ delete [] chargeADC;
+
+ treeD->Fill();
+ loader->WriteDigits("OVERWRITE");
+ loader->UnloadDigits();
+ ResetDigits();
+}
+
+void AliVZERODigitizer::WriteSDigits(AliLoader *loader)
+{
+ // Take fTime arrays filled by the previous
+ // method and produce and add sdigits to the sdigit Tree
+
+ loader->LoadSDigits("UPDATE");
+
+ if (!loader->TreeS()) loader->MakeTree("S");
+ loader->MakeSDigitsContainer();
+ TTree* treeS = loader->TreeS();
+ SDigitsArray();
+ treeS->Branch("VZEROSDigit", &fDigits);
+
+ for (Int_t ipmt = 0; ipmt < 64; ++ipmt) {
+ AddSDigit(ipmt,fNBins[ipmt],fTime[ipmt],fLabels[ipmt]);
+ }
+
+ treeS->Fill();
+ loader->WriteSDigits("OVERWRITE");
+ loader->UnloadSDigits();
+ ResetDigits();
+}
+
+void AliVZERODigitizer::ReadSDigits()
+{
+ // Read SDigits which are then to precessed
+ // in the following method
+ for(Int_t i = 0 ; i < 64; ++i) {
+ memset(fTime[i],0,fNBins[i]*sizeof(Float_t));
+ fLabels[i][0] = fLabels[i][1] = fLabels[i][2] = -1;
+ }
+
+ // Loop over input files
+ Int_t nFiles= fDigInput->GetNinputs();
+ for (Int_t inputFile = 0; inputFile < nFiles; inputFile++) {
+ // Get the current loader
+ AliRunLoader* currentLoader =
+ AliRunLoader::GetRunLoader(fDigInput->GetInputFolderName(inputFile));
+
+ AliLoader *loader = currentLoader->GetLoader("VZEROLoader");
+ loader->LoadSDigits("READ");
+
+ // Get the tree of summable digits
+ TTree* sdigitsTree = loader->TreeS();
+ if (!sdigitsTree) {
+ AliError("No sdigit tree from digInput");
+ continue;
+ }
+
+ // Get the branch
+ TBranch* sdigitsBranch = sdigitsTree->GetBranch("VZEROSDigit");
+ if (!sdigitsBranch) {
+ AliError("Failed to get sdigit branch");
+ return;
+ }
+
+ // Set the branch address
+ TClonesArray *sdigitsArray = NULL;
+ sdigitsBranch->SetAddress(&sdigitsArray);
+
+ // Sum contributions from the sdigits
+ // Get number of entries in the tree
+ Int_t nentries = Int_t(sdigitsBranch->GetEntries());
+ for (Int_t entry = 0; entry < nentries; ++entry) {
+ sdigitsBranch->GetEntry(entry);
+ // Get the number of sdigits
+ Int_t nsdigits = sdigitsArray->GetEntries();
+ for (Int_t sdigit = 0; sdigit < nsdigits; sdigit++) {
+ AliVZEROSDigit* sDigit = static_cast<AliVZEROSDigit*>(sdigitsArray->UncheckedAt(sdigit));
+ Int_t pmNumber = sDigit->PMNumber();
+ Int_t nbins = sDigit->GetNBins();
+ if (nbins != fNBins[pmNumber]) {
+ AliError(Form("Incompatible number of bins between digitizer (%d) and sdigit (%d) for PM %d! Skipping sdigit!",
+ fNBins[pmNumber],nbins,pmNumber));
+ continue;
+ }
+ // Sum the charges
+ Float_t *charges = sDigit->GetCharges();
+ for(Int_t iBin = 0; iBin < nbins; ++iBin) fTime[pmNumber][iBin] += charges[iBin];
+ // and the labels
+ Int_t *labels = sDigit->GetTracks();
+ Int_t j = 0;
+ for(Int_t i = 0; i < 3; ++i) {
+ if (fLabels[pmNumber][i] < 0) {
+ if (labels[j] < 0) break;
+ fLabels[pmNumber][i] = labels[j];
+ j++;
+ }
+ }
+ }
+ }
+ loader->UnloadSDigits();
+ }
+}
+
+//____________________________________________________________________
+TClonesArray*
+AliVZERODigitizer::DigitsArray()
+{
+ // Initialize digit array if not already and
+ // return pointer to it.
+ if (!fDigits) {
+ fDigits = new TClonesArray("AliVZEROdigit", 64);
+ fNdigits = 0;
+ }
+ return fDigits;
+}
+
+//____________________________________________________________________
+TClonesArray*
+AliVZERODigitizer::SDigitsArray()
+{
+ // Initialize sdigit array if not already and
+ // return pointer to it.
+ if (!fDigits) {
+ fDigits = new TClonesArray("AliVZEROSDigit", 64);
+ fNdigits = 0;
+ }
+ return fDigits;
+}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff