* provided "as is" without express or implied warranty. *
**************************************************************************/
+/* $Id$ */
+
//_________________________________________________________________________
// This is a TTask that constructs SDigits out of Hits
-// A Summable Digits is the sum of all hits in a pad
-//
+// A Summable Digits is the "sum" of all hits in a pad
+// Detector response has been simulated via the method
+// SimulateDetectorResponse
//
-//-- Author: F. Pierella
+//-- Authors: F. Pierella, A. De Caro
+// Use case: see AliTOFhits2sdigits.C macro in the CVS
//////////////////////////////////////////////////////////////////////////////
+#include <Riostream.h>
+#include <stdlib.h>
-#include "TTask.h"
-#include "TTree.h"
-#include "TSystem.h"
-#include "TFile.h"
+#include <TBenchmark.h>
+#include <TF1.h>
+#include <TFile.h>
+#include <TFolder.h>
+#include <TH1.h>
+#include <TParticle.h>
+#include <TROOT.h>
+#include <TSystem.h>
+#include <TTask.h>
+#include <TTree.h>
+#include "AliDetector.h"
+#include "AliLoader.h"
+#include "AliRun.h"
+#include "AliRunLoader.h"
+#include "AliTOF.h"
+#include "AliTOFGeometry.h"
#include "AliTOFHitMap.h"
#include "AliTOFSDigit.h"
-#include "AliTOFhit.h"
-#include "AliTOF.h"
-#include "AliTOFv1.h"
-#include "AliTOFv2.h"
-#include "AliTOFv3.h"
-#include "AliTOFv4.h"
#include "AliTOFSDigitizer.h"
-#include "AliRun.h"
-#include "AliDetector.h"
+#include "AliTOFhit.h"
+#include "AliTOFhitT0.h"
#include "AliMC.h"
-#include "TFile.h"
-#include "TTask.h"
-#include "TTree.h"
-#include "TSystem.h"
-#include "TROOT.h"
-#include "TFolder.h"
-#include <stdlib.h>
-#include <iostream.h>
-#include <fstream.h>
-
ClassImp(AliTOFSDigitizer)
//____________________________________________________________________________
- AliTOFSDigitizer::AliTOFSDigitizer():TTask("AliTOFSDigitizer","")
+ AliTOFSDigitizer::AliTOFSDigitizer():TTask("TOFSDigitizer","")
{
// ctor
- fNevents = 0 ;
-// fSDigits = 0 ;
- fHits = 0 ;
+ fRunLoader = 0;
+ fTOFLoader = 0;
+
+ fEvent1 = 0;
+ fEvent2 = 0;
+ ftail = 0;
+ fSelectedSector = -1;
+ fSelectedPlate = -1;
}
-
+
//____________________________________________________________________________
- AliTOFSDigitizer::AliTOFSDigitizer(char* HeaderFile,char *SdigitsFile ):TTask("AliTOFSDigitizer","")
+AliTOFSDigitizer::AliTOFSDigitizer(const char* HeaderFile, Int_t evNumber1, Int_t nEvents):TTask("TOFSDigitizer","")
{
- fNevents = 0 ; // Number of events to digitize, 0 means all evens in current file
+ ftail = 0;
+ fSelectedSector=-1; // by default we sdigitize all sectors
+ fSelectedPlate =-1; // by default we sdigitize all plates in all sectors
+
+ fHeadersFile = HeaderFile ; // input filename (with hits)
+ TFile * file = (TFile*) gROOT->GetFile(fHeadersFile.Data());
+
+ //File was not opened yet open file and get alirun object
+ if (file == 0) {
+ file = TFile::Open(fHeadersFile.Data(),"update") ;
+ gAlice = (AliRun *) file->Get("gAlice") ;
+ }
+
// add Task to //root/Tasks folder
- TTask * roottasks = (TTask*)gROOT->GetRootFolder()->FindObject("Tasks") ;
- roottasks->Add(this) ;
+ TString evfoldname = AliConfig::GetDefaultEventFolderName();
+ fRunLoader = AliRunLoader::GetRunLoader(evfoldname);
+ if (!fRunLoader)
+ fRunLoader = AliRunLoader::Open(HeaderFile);//open session and mount on default event folder
+ if (fRunLoader == 0x0)
+ {
+ Fatal("AliTOFSDigitizer","Event is not loaded. Exiting");
+ return;
+ }
+
+ if (fRunLoader->TreeE() == 0x0) fRunLoader->LoadHeader();
+
+ if (evNumber1>=0) fEvent1 = evNumber1;
+ else fEvent1=0;
+
+ if (nEvents==0) fEvent2 = (Int_t)(fRunLoader->GetNumberOfEvents());
+ else if (nEvents>0) fEvent2 = evNumber1+nEvents;
+ else fEvent2 = 1;
+
+ if (!(fEvent2>fEvent1)) {
+ cout << " ERROR: fEvent2 = " << fEvent2 << " <= fEvent1 = " << fEvent1 << endl;
+ fEvent1 = 0;
+ fEvent2 = 1;
+ cout << " Correction: fEvent2 = " << fEvent2 << " <= fEvent1 = " << fEvent1 << endl;
+ }
+
+ // init parameters for sdigitization
+ InitParameters();
+
+ fTOFLoader = fRunLoader->GetLoader("TOFLoader");
+ if (fTOFLoader == 0x0)
+ {
+ Fatal("AliTOFSDigitizer","Can not find TOF loader in event. Exiting.");
+ return;
+ }
+ fTOFLoader->PostSDigitizer(this);
}
//____________________________________________________________________________
- AliTOFSDigitizer::~AliTOFSDigitizer()
+AliTOFSDigitizer::~AliTOFSDigitizer()
{
// dtor
+ fTOFLoader->CleanSDigitizer();
}
+//____________________________________________________________________________
+void AliTOFSDigitizer::InitParameters()
+{
+ // set parameters for detector simulation
+
+ fTimeResolution = 0.080; //0.120; OLD
+ fpadefficiency = 0.99 ;
+ fEdgeEffect = 2 ;
+ fEdgeTails = 0 ;
+ fHparameter = 0.4 ;
+ fH2parameter = 0.15;
+ fKparameter = 0.5 ;
+ fK2parameter = 0.35;
+ fEffCenter = fpadefficiency;
+ fEffBoundary = 0.65;
+ fEff2Boundary = 0.90;
+ fEff3Boundary = 0.08;
+ fAddTRes = 68. ; // \sqrt{2x20^2 + 15^2 + 2x10^2 + 30^2 + 50^2} (Pb-Pb)
+ //fAddTRes = 48. ; // \sqrt{2x20^2 + 15^2 + 2x10^2 + 30^2 + 15^2} (p-p)
+ // 30^2+20^2+40^2+50^2+50^2+50^2 = 10400 ps^2 (very old value)
+ fResCenter = 35. ; //50. ; // OLD
+ fResBoundary = 70. ;
+ fResSlope = 37. ; //40. ; // OLD
+ fTimeWalkCenter = 0. ;
+ fTimeWalkBoundary=0. ;
+ fTimeWalkSlope = 0. ;
+ fTimeDelayFlag = 1 ;
+ fPulseHeightSlope=2.0 ;
+ fTimeDelaySlope =0.060;
+ // was fMinimumCharge = TMath::Exp(fPulseHeightSlope*fKparameter/2.);
+ fMinimumCharge = TMath::Exp(-fPulseHeightSlope*fHparameter);
+ fChargeSmearing=0.0 ;
+ fLogChargeSmearing=0.13;
+ fTimeSmearing =0.022;
+ fAverageTimeFlag=0 ;
+ fTdcBin = 50.; // 1 TDC bin = 50 ps
+ fAdcBin = 0.25; // 1 ADC bin = 0.25 pC (or 0.03 pC)
+ fAdcMean = 50.; // ADC distribution mpv value for Landau (in bins)
+ // it corresponds to a mean value of ~100 bins
+ fAdcRms = 25.; // ADC distribution rms value (in bins)
+ // it corresponds to distribution rms ~50 bins
+}
+
+//__________________________________________________________________
+Double_t TimeWithTail(Double_t* x, Double_t* par)
+{
+ // sigma - par[0], alpha - par[1], part - par[2]
+ // at x<part*sigma - gauss
+ // at x>part*sigma - TMath::Exp(-x/alpha)
+ Float_t xx =x[0];
+ Double_t f;
+ if(xx<par[0]*par[2]) {
+ f = TMath::Exp(-xx*xx/(2*par[0]*par[0]));
+ } else {
+ f = TMath::Exp(-(xx-par[0]*par[2])/par[1]-0.5*par[2]*par[2]);
+ }
+ return f;
+}
+
+
//____________________________________________________________________________
-void AliTOFSDigitizer::Exec(Option_t *option) {
+void AliTOFSDigitizer::Exec(Option_t *verboseOption) {
+
+ if (strstr(verboseOption,"tim") || strstr(verboseOption,"all"))
+ gBenchmark->Start("TOFSDigitizer");
+
+ if (fEdgeTails) ftail = new TF1("tail",TimeWithTail,-2,2,3);
+
+ Int_t nselectedHits=0;
+ Int_t ntotalsdigits=0;
+ Int_t ntotalupdates=0;
+ Int_t nnoisesdigits=0;
+ Int_t nsignalsdigits=0;
+ Int_t nHitsFromPrim=0;
+ Int_t nHitsFromSec=0;
+ Int_t nlargeTofDiff=0;
+ Bool_t thereIsNotASelection=(fSelectedSector==-1) && (fSelectedPlate==-1);
- AliTOF *TOF = (AliTOF *) gAlice->GetDetector ("TOF");
+ if (fRunLoader->GetAliRun() == 0x0) fRunLoader->LoadgAlice();
+ gAlice = fRunLoader->GetAliRun();
- if (!TOF) {
+ fRunLoader->LoadKinematics();
+
+ AliTOF *tof = (AliTOF *) gAlice->GetDetector("TOF");
+
+ if (!tof) {
Error("AliTOFSDigitizer","TOF not found");
return;
}
+
+ fTOFLoader->LoadHits("read");
+ fTOFLoader->LoadSDigits("recreate");
+
+ for (Int_t iEvent=fEvent1; iEvent<fEvent2; iEvent++) {
+// cout << "------------------- "<< GetName() << " ------------- \n";
+// cout << "Sdigitizing event " << iEvent << endl;
- if (fNevents == 0)
- fNevents = (Int_t) gAlice->TreeE()->GetEntries();
+ fRunLoader->GetEvent(iEvent);
- for (Int_t ievent = 0; ievent < fNevents; ievent++) {
- gAlice->GetEvent(ievent);
- TTree *TH = gAlice->TreeH ();
- if (!TH)
- return;
- if (gAlice->TreeS () == 0)
- gAlice->MakeTree ("S");
+ TTree *hitTree = fTOFLoader->TreeH ();
+ if (!hitTree) return;
-
- //Make branches
- char branchname[20];
- sprintf (branchname, "%s", TOF->GetName ());
+ if (fTOFLoader->TreeS () == 0) fTOFLoader->MakeTree ("S");
+
//Make branch for digits
- TOF->MakeBranch ("S");
+ tof->MakeBranch("S");
- //Now made SDigits from hits
+ // recreate TClonesArray fSDigits - for backward compatibility
+ if (tof->SDigits() == 0) {
+ tof->CreateSDigitsArray();
+ } else {
+ tof->RecreateSDigitsArray();
+ }
+
+ tof->SetTreeAddress();
+
+ Int_t version=tof->IsVersion();
+
+ Int_t nselectedHitsinEv=0;
+ Int_t ntotalsdigitsinEv=0;
+ Int_t ntotalupdatesinEv=0;
+ Int_t nnoisesdigitsinEv=0;
+ Int_t nsignalsdigitsinEv=0;
- Int_t vol[5]; // location for a digit
- Float_t digit[2]; // TOF digit variables
TParticle *particle;
- AliTOFhit *tofHit;
- TClonesArray *TOFhits = TOF->Hits();
+ //AliTOFhit *tofHit;
+ TClonesArray *tofHitArray = tof->Hits();
-// create hit map
- AliTOFHitMap *hitMap = new AliTOFHitMap(TOF->SDigits());
+ // create hit map
+ AliTOFHitMap *hitMap = new AliTOFHitMap(tof->SDigits());
- Int_t ntracks = static_cast<Int_t>(TH->GetEntries());
+ TBranch * tofHitsBranch = hitTree->GetBranch("TOF");
+
+ Int_t ntracks = static_cast<Int_t>(hitTree->GetEntries());
for (Int_t track = 0; track < ntracks; track++)
{
gAlice->ResetHits();
- TH->GetEvent(track);
- particle = gAlice->Particle(track);
- Int_t nhits = TOFhits->GetEntriesFast();
-
- for (Int_t hit = 0; hit < nhits; hit++)
- {
- tofHit = (AliTOFhit *) TOFhits->UncheckedAt(hit);
- vol[0] = tofHit->GetSector();
- vol[1] = tofHit->GetPlate();
- vol[2] = tofHit->GetStrip();
- vol[3] = tofHit->GetPadx();
- vol[4] = tofHit->GetPadz();
-
- // 95% of efficiency to be inserted here
- // edge effect to be inserted here
- // cross talk to be inserted here
-
- Float_t idealtime = tofHit->GetTof(); // unit s
- idealtime *= 1.E+12; // conversion from s to ps
- // fTimeRes is given usually in ps
- Float_t tdctime = gRandom->Gaus(idealtime, TOF->GetTimeRes());
- digit[0] = tdctime;
-
- // typical Landau Distribution to be inserted here
- // instead of Gaussian Distribution
- Float_t idealcharge = tofHit->GetEdep();
- Float_t adccharge = gRandom->Gaus(idealcharge, TOF->GetChrgRes());
- digit[1] = adccharge;
- Int_t tracknum = tofHit->GetTrack();
-
- // check if two digit are on the same pad; in that case we sum
- // the two or more digits
- if (hitMap->TestHit(vol) != kEmpty) {
- AliTOFSDigit *sdig = static_cast<AliTOFSDigit*>(hitMap->GetHit(vol));
- sdig->Update(tdctime,adccharge,tracknum);
+ tofHitsBranch->GetEvent(track);
+ particle = gAlice->GetMCApp()->Particle(track);
+ Int_t nhits = tofHitArray->GetEntriesFast();
+ // cleaning all hits of the same track in the same pad volume
+ // it is a rare event, however it happens
+
+ Int_t previousTrack =-1;
+ Int_t previousSector=-1;
+ Int_t previousPlate =-1;
+ Int_t previousStrip =-1;
+ Int_t previousPadX =-1;
+ Int_t previousPadZ =-1;
+
+ for (Int_t hit = 0; hit < nhits; hit++) {
+ Int_t vol[5]; // location for a digit
+ Float_t digit[2]; // TOF digit variables
+ Int_t tracknum;
+ Float_t dxPad;
+ Float_t dzPad;
+ Float_t geantTime;
+
+ // fp: really sorry for this, it is a temporary trick to have
+ // track length too
+ if(version!=6){
+ AliTOFhit *tofHit = (AliTOFhit *) tofHitArray->UncheckedAt(hit);
+ tracknum = tofHit->GetTrack();
+ vol[0] = tofHit->GetSector();
+ vol[1] = tofHit->GetPlate();
+ vol[2] = tofHit->GetStrip();
+ vol[3] = tofHit->GetPadx();
+ vol[4] = tofHit->GetPadz();
+ dxPad = tofHit->GetDx();
+ dzPad = tofHit->GetDz();
+ geantTime = tofHit->GetTof(); // unit [s]
} else {
- TOF->AddSDigit(tracknum, vol, digit);
- hitMap->SetHit(vol);
+ AliTOFhitT0 *tofHit = (AliTOFhitT0 *) tofHitArray->UncheckedAt(hit);
+ tracknum = tofHit->GetTrack();
+ vol[0] = tofHit->GetSector();
+ vol[1] = tofHit->GetPlate();
+ vol[2] = tofHit->GetStrip();
+ vol[3] = tofHit->GetPadx();
+ vol[4] = tofHit->GetPadz();
+ dxPad = tofHit->GetDx();
+ dzPad = tofHit->GetDz();
+ geantTime = tofHit->GetTof(); // unit [s]
}
+
+ geantTime *= 1.e+09; // conversion from [s] to [ns]
+
+ // selection case for sdigitizing only hits in a given plate of a given sector
+ if(thereIsNotASelection || (vol[0]==fSelectedSector && vol[1]==fSelectedPlate)){
+
+ Bool_t dummy=((tracknum==previousTrack) && (vol[0]==previousSector) && (vol[1]==previousPlate) && (vol[2]==previousStrip));
+
+ Bool_t isCloneOfThePrevious=dummy && ((vol[3]==previousPadX) && (vol[4]==previousPadZ));
+
+ Bool_t isNeighOfThePrevious=dummy && ((((vol[3]==previousPadX-1) || (vol[3]==previousPadX+1)) && (vol[4]==previousPadZ)) || ((vol[3]==previousPadX) && ((vol[4]==previousPadZ+1) || (vol[4]==previousPadZ-1))));
+
+ if(!isCloneOfThePrevious && !isNeighOfThePrevious){
+ // update "previous" values
+ // in fact, we are yet in the future, so the present is past
+ previousTrack=tracknum;
+ previousSector=vol[0];
+ previousPlate=vol[1];
+ previousStrip=vol[2];
+ previousPadX=vol[3];
+ previousPadZ=vol[4];
+
+ nselectedHits++;
+ nselectedHitsinEv++;
+ if (particle->GetFirstMother() < 0) nHitsFromPrim++; // counts hits due to primary particles
+
+ Float_t xStrip=AliTOFGeometry::XPad()*(vol[3]+0.5-0.5*AliTOFGeometry::NpadX())+dxPad;
+ Float_t zStrip=AliTOFGeometry::ZPad()*(vol[4]+0.5-0.5*AliTOFGeometry::NpadZ())+dzPad;
+
+ Int_t nActivatedPads = 0, nFiredPads = 0;
+ Bool_t isFired[4] = {kFALSE, kFALSE, kFALSE, kFALSE};
+ Float_t tofAfterSimul[4] = {0., 0., 0., 0.};
+ Float_t qInduced[4] = {0.,0.,0.,0.};
+ Int_t nPlace[4] = {0, 0, 0, 0};
+ Float_t averageTime = 0.;
+ SimulateDetectorResponse(zStrip,xStrip,geantTime,nActivatedPads,nFiredPads,isFired,nPlace,qInduced,tofAfterSimul,averageTime);
+ if(nFiredPads) {
+ for(Int_t indexOfPad=0; indexOfPad<nActivatedPads; indexOfPad++) {
+ if(isFired[indexOfPad]){ // the pad has fired
+ Float_t timediff=geantTime-tofAfterSimul[indexOfPad];
+
+ if(timediff>=0.2) nlargeTofDiff++;
+
+ digit[0] = (Int_t) ((tofAfterSimul[indexOfPad]*1.e+03)/fTdcBin); // TDC bin number (each bin -> 50. ps)
+
+ Float_t landauFactor = gRandom->Landau(fAdcMean, fAdcRms);
+ digit[1] = (Int_t) (qInduced[indexOfPad] * landauFactor); // ADC bins (each bin -> 0.25 (or 0.03) pC)
+
+ // recalculate the volume only for neighbouring pads
+ if(indexOfPad){
+ (nPlace[indexOfPad]<=AliTOFGeometry::NpadX()) ? vol[4] = 0 : vol[4] = 1;
+ (nPlace[indexOfPad]<=AliTOFGeometry::NpadX()) ? vol[3] = nPlace[indexOfPad] - 1 : vol[3] = nPlace[indexOfPad] - AliTOFGeometry::NpadX() - 1;
+ }
+ // check if two sdigit are on the same pad;
+ // in that case we sum the two or more sdigits
+ if (hitMap->TestHit(vol) != kEmpty) {
+ AliTOFSDigit *sdig = static_cast<AliTOFSDigit*>(hitMap->GetHit(vol));
+ Int_t tdctime = (Int_t) digit[0];
+ Int_t adccharge = (Int_t) digit[1];
+ sdig->Update(fTdcBin,tdctime,adccharge,tracknum);
+ ntotalupdatesinEv++;
+ ntotalupdates++;
+ } else {
+
+ tof->AddSDigit(tracknum, vol, digit);
+
+ if(indexOfPad){
+ nnoisesdigits++;
+ nnoisesdigitsinEv++;
+ } else {
+ nsignalsdigits++;
+ nsignalsdigitsinEv++;
+ }
+ ntotalsdigitsinEv++;
+ ntotalsdigits++;
+ hitMap->SetHit(vol);
+ } // if (hitMap->TestHit(vol) != kEmpty)
+ } // if(isFired[indexOfPad])
+ } // end loop on nActivatedPads
+ } // if(nFiredPads) i.e. if some pads has fired
+ } // close if(!isCloneOfThePrevious)
+ } // close the selection on sector and plate
} // end loop on hits for the current track
} // end loop on ntracks
-
+
delete hitMap;
-
- gAlice->TreeS()->Reset();
- gAlice->TreeS()->Fill();
- gAlice->TreeS()->Write(0,TObject::kOverwrite) ;
- } //event loop
+
+ fTOFLoader->TreeS()->Reset();
+ fTOFLoader->TreeS()->Fill();
+ fTOFLoader->WriteSDigits("OVERWRITE");
+
+ if (tof->SDigits()) tof->ResetSDigits();
+
+ if (strstr(verboseOption,"all")) {
+ cout << "---------------------------------------- \n";
+ cout << " <AliTOFSDigitizer> \n";
+ cout << "After sdigitizing " << nselectedHitsinEv << " hits" << " in event " << iEvent << endl;
+ //" (" << nHitsFromPrim << " from primaries and " << nHitsFromSec << " from secondaries) TOF hits, "
+ cout << ntotalsdigitsinEv << " digits have been created \n";
+ cout << "(" << nsignalsdigitsinEv << " due to signals and " << nnoisesdigitsinEv << " due to border effect) \n";
+ cout << ntotalupdatesinEv << " total updates of the hit map have been performed in current event \n";
+ cout << "---------------------------------------- \n";
+ }
+
+ } //event loop on events
+
+ fTOFLoader->UnloadSDigits();
+ fTOFLoader->UnloadHits();
+ fRunLoader->UnloadKinematics();
+ //fRunLoader->UnloadgAlice();
+
+ // free used memory
+ if (ftail){
+ delete ftail;
+ ftail = 0;
+ }
+
+ nHitsFromSec=nselectedHits-nHitsFromPrim;
+ if(strstr(verboseOption,"all")){
+ cout << "---------------------------------------- \n";
+ cout << "---------------------------------------- \n";
+ cout << "-----------SDigitization Summary-------- \n";
+ cout << " <AliTOFSDigitizer> \n";
+ cout << "After sdigitizing " << nselectedHits << " hits \n";
+ cout << "in " << (fEvent2-fEvent1) << " events \n";
+//" (" << nHitsFromPrim << " from primaries and " << nHitsFromSec << " from secondaries) TOF hits, "
+ cout << ntotalsdigits << " sdigits have been created \n";
+ cout << "(" << nsignalsdigits << " due to signals and "
+ << nnoisesdigits << " due to border effect) \n";
+ cout << ntotalupdates << " total updates of the hit map have been performed \n";
+ cout << "in " << nlargeTofDiff << " cases the time of flight difference is greater than 200 ps \n";
+ }
+
+
+ if(strstr(verboseOption,"tim") || strstr(verboseOption,"all")){
+ gBenchmark->Stop("TOFSDigitizer");
+ cout << "AliTOFSDigitizer: \n";
+ cout << " took " << gBenchmark->GetCpuTime("TOFSDigitizer") << " seconds in order to make sdigits "
+ << gBenchmark->GetCpuTime("TOFSDigitizer")/(fEvent2-fEvent1) << " seconds per event \n";
+ cout << " +++++++++++++++++++++++++++++++++++++++++++++++++++ \n";
+ }
+}
+//__________________________________________________________________
+void AliTOFSDigitizer::Print(Option_t* /*opt*/)const
+{
+ cout << "------------------- "<< GetName() << " ------------- \n";
}
-
+
//__________________________________________________________________
-void AliTOFSDigitizer::SetSDigitsFile(char * file ){
- if(!fSDigitsFile.IsNull())
- cout << "Changing SDigits file from " <<(char *)fSDigitsFile.Data() << " to " << file << endl ;
- fSDigitsFile=file ;
+void AliTOFSDigitizer::SelectSectorAndPlate(Int_t sector, Int_t plate)
+{
+ Bool_t isaWrongSelection=(sector < 0) || (sector >= AliTOFGeometry::NSectors()) || (plate < 0) || (plate >= AliTOFGeometry::NPlates());
+ if(isaWrongSelection){
+ cout << "You have selected an invalid value for sector or plate " << endl;
+ cout << "The correct range for sector is [0,"<< AliTOFGeometry::NSectors()-1 <<"]\n";
+ cout << "The correct range for plate is [0,"<< AliTOFGeometry::NPlates()-1 <<"]\n";
+ cout << "By default we continue sdigitizing all hits in all plates of all sectors \n";
+ } else {
+ fSelectedSector=sector;
+ fSelectedPlate =plate;
+ cout << "SDigitizing only hits in plate " << fSelectedPlate << " of the sector "
+ << fSelectedSector << endl;
+ }
}
+
+//__________________________________________________________________
+void AliTOFSDigitizer::SimulateDetectorResponse(Float_t z0, Float_t x0, Float_t geantTime, Int_t& nActivatedPads, Int_t& nFiredPads, Bool_t* isFired, Int_t* nPlace, Float_t* qInduced, Float_t* tofTime, Float_t& averageTime)
+{
+ // Description:
+ // Input: z0, x0 - hit position in the strip system (0,0 - center of the strip), cm
+ // geantTime - time generated by Geant, ns
+ // Output: nActivatedPads - the number of pads activated by the hit (1 || 2 || 4)
+ // nFiredPads - the number of pads fired (really activated) by the hit (nFiredPads <= nActivatedPads)
+ // qInduced[iPad]- charge induced on pad, arb. units
+ // this array is initialized at zero by the caller
+ // tofAfterSimul[iPad] - time calculated with edge effect algorithm, ns
+ // this array is initialized at zero by the caller
+ // averageTime - time given by pad hited by the Geant track taking into account the times (weighted) given by the pads fired for edge effect also.
+ // The weight is given by the qInduced[iPad]/qCenterPad
+ // this variable is initialized at zero by the caller
+ // nPlace[iPad] - the number of the pad place, iPad = 0, 1, 2, 3
+ // this variable is initialized at zero by the caller
+ //
+ // Description of used variables:
+ // eff[iPad] - efficiency of the pad
+ // res[iPad] - resolution of the pad, ns
+ // timeWalk[iPad] - time walk of the pad, ns
+ // timeDelay[iPad] - time delay for neighbouring pad to hited pad, ns
+ // PadId[iPad] - Pad Identifier
+ // E | F --> PadId[iPad] = 5 | 6
+ // A | B --> PadId[iPad] = 1 | 2
+ // C | D --> PadId[iPad] = 3 | 4
+ // nTail[iPad] - the tail number, = 1 for tailA, = 2 for tailB
+ // qCenterPad - charge extimated for each pad, arb. units
+ // weightsSum - sum of weights extimated for each pad fired, arb. units
+
+ const Float_t kSigmaForTail[2] = {AliTOFGeometry::SigmaForTail1(),AliTOFGeometry::SigmaForTail2()}; //for tail
+ Int_t iz = 0, ix = 0;
+ Float_t dX = 0., dZ = 0., x = 0., z = 0.;
+ Float_t h = fHparameter, h2 = fH2parameter, k = fKparameter, k2 = fK2parameter;
+ Float_t effX = 0., effZ = 0., resX = 0., resZ = 0., timeWalkX = 0., timeWalkZ = 0.;
+ Float_t logOfqInd = 0.;
+ Float_t weightsSum = 0.;
+ Int_t nTail[4] = {0,0,0,0};
+ Int_t padId[4] = {0,0,0,0};
+ Float_t eff[4] = {0.,0.,0.,0.};
+ Float_t res[4] = {0.,0.,0.,0.};
+ // Float_t qCenterPad = fMinimumCharge * fMinimumCharge;
+ Float_t qCenterPad = 1.;
+ Float_t timeWalk[4] = {0.,0.,0.,0.};
+ Float_t timeDelay[4] = {0.,0.,0.,0.};
+
+ nActivatedPads = 0;
+ nFiredPads = 0;
+
+ (z0 <= 0) ? iz = 0 : iz = 1;
+ dZ = z0 + (0.5 * AliTOFGeometry::NpadZ() - iz - 0.5) * AliTOFGeometry::ZPad(); // hit position in the pad frame, (0,0) - center of the pad
+ z = 0.5 * AliTOFGeometry::ZPad() - TMath::Abs(dZ); // variable for eff., res. and timeWalk. functions
+ iz++; // z row: 1, ..., AliTOFGeometry::NpadZ = 2
+ ix = (Int_t)((x0 + 0.5 * AliTOFGeometry::NpadX() * AliTOFGeometry::XPad()) / AliTOFGeometry::XPad());
+ dX = x0 + (0.5 * AliTOFGeometry::NpadX() - ix - 0.5) * AliTOFGeometry::XPad(); // hit position in the pad frame, (0,0) - center of the pad
+ x = 0.5 * AliTOFGeometry::XPad() - TMath::Abs(dX); // variable for eff., res. and timeWalk. functions;
+ ix++; // x row: 1, ..., AliTOFGeometry::NpadX = 48
+
+ ////// Pad A:
+ nActivatedPads++;
+ nPlace[nActivatedPads-1] = (iz - 1) * AliTOFGeometry::NpadX() + ix;
+ qInduced[nActivatedPads-1] = qCenterPad;
+ padId[nActivatedPads-1] = 1;
+
+ if (fEdgeEffect == 0) {
+ eff[nActivatedPads-1] = fEffCenter;
+ if (gRandom->Rndm() < eff[nActivatedPads-1]) {
+ nFiredPads = 1;
+ res[nActivatedPads-1] = 0.001 * TMath::Sqrt(fAddTRes*fAddTRes + fResCenter * fResCenter); // ns
+ isFired[nActivatedPads-1] = kTRUE;
+ tofTime[nActivatedPads-1] = gRandom->Gaus(geantTime + fTimeWalkCenter, res[0]);
+ averageTime = tofTime[nActivatedPads-1];
+ }
+ } else {
+
+ if(z < h) {
+ if(z < h2) {
+ effZ = fEffBoundary + (fEff2Boundary - fEffBoundary) * z / h2;
+ } else {
+ effZ = fEff2Boundary + (fEffCenter - fEff2Boundary) * (z - h2) / (h - h2);
+ }
+ resZ = fResBoundary + (fResCenter - fResBoundary) * z / h;
+ timeWalkZ = fTimeWalkBoundary + (fTimeWalkCenter - fTimeWalkBoundary) * z / h;
+ nTail[nActivatedPads-1] = 1;
+ } else {
+ effZ = fEffCenter;
+ resZ = fResCenter;
+ timeWalkZ = fTimeWalkCenter;
+ }
+
+ if(x < h) {
+ if(x < h2) {
+ effX = fEffBoundary + (fEff2Boundary - fEffBoundary) * x / h2;
+ } else {
+ effX = fEff2Boundary + (fEffCenter - fEff2Boundary) * (x - h2) / (h - h2);
+ }
+ resX = fResBoundary + (fResCenter - fResBoundary) * x / h;
+ timeWalkX = fTimeWalkBoundary + (fTimeWalkCenter - fTimeWalkBoundary) * x / h;
+ nTail[nActivatedPads-1] = 1;
+ } else {
+ effX = fEffCenter;
+ resX = fResCenter;
+ timeWalkX = fTimeWalkCenter;
+ }
+
+ (effZ<effX) ? eff[nActivatedPads-1] = effZ : eff[nActivatedPads-1] = effX;
+ (resZ<resX) ? res[nActivatedPads-1] = 0.001 * TMath::Sqrt(fAddTRes*fAddTRes + resX * resX) : res[nActivatedPads-1] = 0.001 * TMath::Sqrt(fAddTRes*fAddTRes + resZ * resZ); // ns
+ (timeWalkZ<timeWalkX) ? timeWalk[nActivatedPads-1] = 0.001 * timeWalkZ : timeWalk[nActivatedPads-1] = 0.001 * timeWalkX; // ns
+
+
+ ////// Pad B:
+ if(z < k2) {
+ effZ = fEffBoundary - (fEffBoundary - fEff3Boundary) * (z / k2);
+ } else {
+ effZ = fEff3Boundary * (k - z) / (k - k2);
+ }
+ resZ = fResBoundary + fResSlope * z / k;
+ timeWalkZ = fTimeWalkBoundary + fTimeWalkSlope * z / k;
+
+ if(z < k && z > 0) {
+ if( (iz == 1 && dZ > 0) || (iz == 2 && dZ < 0) ) {
+ nActivatedPads++;
+ nPlace[nActivatedPads-1] = nPlace[0] + (3 - 2 * iz) * AliTOFGeometry::NpadX();
+ eff[nActivatedPads-1] = effZ;
+ res[nActivatedPads-1] = 0.001 * TMath::Sqrt(fAddTRes*fAddTRes + resZ * resZ); // ns
+ timeWalk[nActivatedPads-1] = 0.001 * timeWalkZ; // ns
+ nTail[nActivatedPads-1] = 2;
+ if (fTimeDelayFlag) {
+ // qInduced[0] = fMinimumCharge * TMath::Exp(fPulseHeightSlope * z / 2.);
+ // qInduced[nActivatedPads-1] = fMinimumCharge * TMath::Exp(-fPulseHeightSlope * z / 2.);
+ qInduced[nActivatedPads-1] = TMath::Exp(-fPulseHeightSlope * z);
+ logOfqInd = gRandom->Gaus(-fPulseHeightSlope * z, fLogChargeSmearing);
+ timeDelay[nActivatedPads-1] = gRandom->Gaus(-fTimeDelaySlope * logOfqInd, fTimeSmearing);
+ } else {
+ timeDelay[nActivatedPads-1] = 0.;
+ }
+ padId[nActivatedPads-1] = 2;
+ }
+ }
+
+
+ ////// Pad C, D, E, F:
+ if(x < k2) {
+ effX = fEffBoundary - (fEffBoundary - fEff3Boundary) * (x / k2);
+ } else {
+ effX = fEff3Boundary * (k - x) / (k - k2);
+ }
+ resX = fResBoundary + fResSlope*x/k;
+ timeWalkX = fTimeWalkBoundary + fTimeWalkSlope*x/k;
+
+ if(x < k && x > 0) {
+ // C:
+ if(ix > 1 && dX < 0) {
+ nActivatedPads++;
+ nPlace[nActivatedPads-1] = nPlace[0] - 1;
+ eff[nActivatedPads-1] = effX;
+ res[nActivatedPads-1] = 0.001 * TMath::Sqrt(fAddTRes*fAddTRes + resX * resX); // ns
+ timeWalk[nActivatedPads-1] = 0.001 * timeWalkX; // ns
+ nTail[nActivatedPads-1] = 2;
+ if (fTimeDelayFlag) {
+ // qInduced[0] = fMinimumCharge * TMath::Exp(fPulseHeightSlope * x / 2.);
+ // qInduced[nActivatedPads-1] = fMinimumCharge * TMath::Exp(-fPulseHeightSlope * x / 2.);
+ qInduced[nActivatedPads-1] = TMath::Exp(-fPulseHeightSlope * x);
+ logOfqInd = gRandom->Gaus(-fPulseHeightSlope * x, fLogChargeSmearing);
+ timeDelay[nActivatedPads-1] = gRandom->Gaus(-fTimeDelaySlope * logOfqInd, fTimeSmearing);
+ } else {
+ timeDelay[nActivatedPads-1] = 0.;
+ }
+ padId[nActivatedPads-1] = 3;
+
+ // D:
+ if(z < k && z > 0) {
+ if( (iz == 1 && dZ > 0) || (iz == 2 && dZ < 0) ) {
+ nActivatedPads++;
+ nPlace[nActivatedPads-1] = nPlace[0] + (3 - 2 * iz) * AliTOFGeometry::NpadX() - 1;
+ eff[nActivatedPads-1] = effX * effZ;
+ (resZ<resX) ? res[nActivatedPads-1] = 0.001 * TMath::Sqrt(fAddTRes*fAddTRes + resX * resX) : res[nActivatedPads-1] = 0.001 * TMath::Sqrt(fAddTRes*fAddTRes + resZ * resZ); // ns
+ (timeWalkZ<timeWalkX) ? timeWalk[nActivatedPads-1] = 0.001 * timeWalkZ : timeWalk[nActivatedPads-1] = 0.001 * timeWalkX; // ns
+
+ nTail[nActivatedPads-1] = 2;
+ if (fTimeDelayFlag) {
+ if (TMath::Abs(x) < TMath::Abs(z)) {
+ // qInduced[0] = fMinimumCharge * TMath::Exp(fPulseHeightSlope * z / 2.);
+ // qInduced[nActivatedPads-1] = fMinimumCharge * TMath::Exp(-fPulseHeightSlope * z / 2.);
+ qInduced[nActivatedPads-1] = TMath::Exp(-fPulseHeightSlope * z);
+ logOfqInd = gRandom->Gaus(-fPulseHeightSlope * z, fLogChargeSmearing);
+ } else {
+ // qInduced[0] = fMinimumCharge * TMath::Exp(fPulseHeightSlope * x / 2.);
+ // qInduced[nActivatedPads-1] = fMinimumCharge * TMath::Exp(-fPulseHeightSlope * x / 2.);
+ qInduced[nActivatedPads-1] = TMath::Exp(-fPulseHeightSlope * x);
+ logOfqInd = gRandom->Gaus(-fPulseHeightSlope * x, fLogChargeSmearing);
+ }
+ timeDelay[nActivatedPads-1] = gRandom->Gaus(-fTimeDelaySlope * logOfqInd, fTimeSmearing);
+ } else {
+ timeDelay[nActivatedPads-1] = 0.;
+ }
+ padId[nActivatedPads-1] = 4;
+ }
+ } // end D
+ } // end C
+
+ // E:
+ if(ix < AliTOFGeometry::NpadX() && dX > 0) {
+ nActivatedPads++;
+ nPlace[nActivatedPads-1] = nPlace[0] + 1;
+ eff[nActivatedPads-1] = effX;
+ res[nActivatedPads-1] = 0.001 * (TMath::Sqrt(fAddTRes*fAddTRes + resX * resX)); // ns
+ timeWalk[nActivatedPads-1] = 0.001 * timeWalkX; // ns
+ nTail[nActivatedPads-1] = 2;
+ if (fTimeDelayFlag) {
+ // qInduced[0] = fMinimumCharge * TMath::Exp(fPulseHeightSlope * x / 2.);
+ // qInduced[nActivatedPads-1] = fMinimumCharge * TMath::Exp(-fPulseHeightSlope * x / 2.);
+ qInduced[nActivatedPads-1] = TMath::Exp(-fPulseHeightSlope * x);
+ logOfqInd = gRandom->Gaus(-fPulseHeightSlope * x, fLogChargeSmearing);
+ timeDelay[nActivatedPads-1] = gRandom->Gaus(-fTimeDelaySlope * logOfqInd, fTimeSmearing);
+ } else {
+ timeDelay[nActivatedPads-1] = 0.;
+ }
+ padId[nActivatedPads-1] = 5;
+
+
+ // F:
+ if(z < k && z > 0) {
+ if( (iz == 1 && dZ > 0) || (iz == 2 && dZ < 0) ) {
+ nActivatedPads++;
+ nPlace[nActivatedPads - 1] = nPlace[0] + (3 - 2 * iz) * AliTOFGeometry::NpadX() + 1;
+ eff[nActivatedPads - 1] = effX * effZ;
+ (resZ<resX) ? res[nActivatedPads-1] = 0.001 * TMath::Sqrt(fAddTRes*fAddTRes + resX * resX) : res[nActivatedPads-1] = 0.001 * TMath::Sqrt(fAddTRes*fAddTRes + resZ * resZ); // ns
+ (timeWalkZ<timeWalkX) ? timeWalk[nActivatedPads-1] = 0.001 * timeWalkZ : timeWalk[nActivatedPads-1] = 0.001*timeWalkX; // ns
+ nTail[nActivatedPads-1] = 2;
+ if (fTimeDelayFlag) {
+ if (TMath::Abs(x) < TMath::Abs(z)) {
+ // qInduced[0] = fMinimumCharge * TMath::Exp(fPulseHeightSlope * z / 2.);
+ // qInduced[nActivatedPads-1] = fMinimumCharge * TMath::Exp(-fPulseHeightSlope * z / 2.);
+ qInduced[nActivatedPads-1] = TMath::Exp(-fPulseHeightSlope * z);
+ logOfqInd = gRandom->Gaus(-fPulseHeightSlope * z, fLogChargeSmearing);
+ } else {
+ // qInduced[0] = fMinimumCharge * TMath::Exp(fPulseHeightSlope * x / 2.);
+ // qInduced[nActivatedPads-1] = fMinimumCharge * TMath::Exp(-fPulseHeightSlope * x / 2.);
+ qInduced[nActivatedPads-1] = TMath::Exp(-fPulseHeightSlope * x);
+ logOfqInd = gRandom->Gaus(-fPulseHeightSlope * x, fLogChargeSmearing);
+ }
+ timeDelay[nActivatedPads-1] = gRandom->Gaus(-fTimeDelaySlope * logOfqInd, fTimeSmearing);
+ } else {
+ timeDelay[nActivatedPads-1] = 0.;
+ }
+ padId[nActivatedPads-1] = 6;
+ }
+ } // end F
+ } // end E
+ } // end if(x < k)
+
+
+ for (Int_t iPad = 0; iPad < nActivatedPads; iPad++) {
+ if (res[iPad] < fTimeResolution) res[iPad] = fTimeResolution;
+ if(gRandom->Rndm() < eff[iPad]) {
+ isFired[iPad] = kTRUE;
+ nFiredPads++;
+ if(fEdgeTails) {
+ if(nTail[iPad] == 0) {
+ tofTime[iPad] = gRandom->Gaus(geantTime + timeWalk[iPad] + timeDelay[iPad], res[iPad]);
+ } else {
+ ftail->SetParameters(res[iPad], 2. * res[iPad], kSigmaForTail[nTail[iPad]-1]);
+ Double_t timeAB = ftail->GetRandom();
+ tofTime[iPad] = geantTime + timeWalk[iPad] + timeDelay[iPad] + timeAB;
+ }
+ } else {
+ tofTime[iPad] = gRandom->Gaus(geantTime + timeWalk[iPad] + timeDelay[iPad], res[iPad]);
+ }
+ if (fAverageTimeFlag) {
+ averageTime += tofTime[iPad] * qInduced[iPad];
+ weightsSum += qInduced[iPad];
+ } else {
+ averageTime += tofTime[iPad];
+ weightsSum += 1.;
+ }
+ }
+ }
+ if (weightsSum!=0) averageTime /= weightsSum;
+ } // end else (fEdgeEffect != 0)
+}
+
//__________________________________________________________________
-void AliTOFSDigitizer::Print(Option_t* option)const
+void AliTOFSDigitizer::PrintParameters()const
{
- cout << "------------------- "<< GetName() << " -------------" << endl ;
- if(fSDigitsFile.IsNull())
- cout << " Writing SDigitis to file galice.root "<< endl ;
- else
- cout << " Writing SDigitis to file " << (char*) fSDigitsFile.Data() << endl ;
+ //
+ // Print parameters used for sdigitization
+ //
+ cout << " ------------------- "<< GetName() << " -------------" << endl ;
+ cout << " Parameters used for TOF SDigitization " << endl ;
+ // Printing the parameters
+
+ cout << " Number of events: " << (fEvent2-fEvent1) << endl;
+ cout << " from event " << fEvent1 << " to event " << (fEvent2-1) << endl;
+ cout << " Time Resolution (ns) "<< fTimeResolution <<" Pad Efficiency: "<< fpadefficiency << endl;
+ cout << " Edge Effect option: "<< fEdgeEffect<< endl;
+ cout << " Boundary Effect Simulation Parameters " << endl;
+ cout << " Hparameter: "<< fHparameter<<" H2parameter:"<< fH2parameter <<" Kparameter:"<< fKparameter<<" K2parameter: "<< fK2parameter << endl;
+ cout << " Efficiency in the central region of the pad: "<< fEffCenter << endl;
+ cout << " Efficiency at the boundary region of the pad: "<< fEffBoundary << endl;
+ cout << " Efficiency value at H2parameter "<< fEff2Boundary << endl;
+ cout << " Efficiency value at K2parameter "<< fEff3Boundary << endl;
+ cout << " Resolution (ps) in the central region of the pad: "<< fResCenter << endl;
+ cout << " Resolution (ps) at the boundary of the pad : "<< fResBoundary << endl;
+ cout << " Slope (ps/K) for neighbouring pad : "<< fResSlope <<endl;
+ cout << " Time walk (ps) in the central region of the pad : "<< fTimeWalkCenter << endl;
+ cout << " Time walk (ps) at the boundary of the pad : "<< fTimeWalkBoundary<< endl;
+ cout << " Slope (ps/K) for neighbouring pad : "<< fTimeWalkSlope<<endl;
+ cout << " Pulse Heigth Simulation Parameters " << endl;
+ cout << " Flag for delay due to the PulseHeightEffect: "<< fTimeDelayFlag <<endl;
+ cout << " Pulse Height Slope : "<< fPulseHeightSlope<<endl;
+ cout << " Time Delay Slope : "<< fTimeDelaySlope<<endl;
+ cout << " Minimum charge amount which could be induced : "<< fMinimumCharge<<endl;
+ cout << " Smearing in charge in (q1/q2) vs x plot : "<< fChargeSmearing<<endl;
+ cout << " Smearing in log of charge ratio : "<< fLogChargeSmearing<<endl;
+ cout << " Smearing in time in time vs log(q1/q2) plot : "<< fTimeSmearing<<endl;
+ cout << " Flag for average time : "<< fAverageTimeFlag<<endl;
+ cout << " Edge tails option : "<< fEdgeTails << endl;
+
}