//_________________________________________________________________________
// 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 "TBenchmark.h"
#include "TTask.h"
#include "TTree.h"
#include "TSystem.h"
#include "TFile.h"
+#include "TParticle.h"
+#include "TH1.h"
#include "AliTOFHitMap.h"
#include "AliTOFSDigit.h"
AliTOFSDigitizer::AliTOFSDigitizer():TTask("AliTOFSDigitizer","")
{
// ctor
- fNevents = 0 ;
-// fSDigits = 0 ;
- fHits = 0 ;
+ fSDigits = 0 ;
+ fEvent1=0;
+ fEvent2=0;
ftail = 0;
}
//____________________________________________________________________________
- AliTOFSDigitizer::AliTOFSDigitizer(char* HeaderFile,char *SdigitsFile ):TTask("AliTOFSDigitizer","")
+ AliTOFSDigitizer::AliTOFSDigitizer(char* HeaderFile,char *SdigitsFile, Int_t evNumber1, Int_t nEvents):TTask("AliTOFSDigitizer","")
{
- fNevents = 0 ; // Number of events to digitize, 0 means all evens in current file
+ fEvent1=evNumber1;
+ fEvent2=fEvent1+nEvents;
+ fSDigits = 0;
ftail = 0;
+ fHeadersFile = HeaderFile ; // input filename (with hits)
+ fSDigitsFile = SdigitsFile; // output filename for sdigits
+ 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") ;
+ }
+
// init parameters for sdigitization
InitParameters();
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 TimeWithTailS(Double_t* x, Double_t* par)
+Double_t TimeWithTail(Double_t* x, Double_t* par)
{
// sigma - par[0], alpha - par[1], part - par[2]
// at x<part*sigma - gauss
//____________________________________________________________________________
-void AliTOFSDigitizer::Exec(Option_t *option) {
+void AliTOFSDigitizer::Exec(Option_t *verboseOption, Option_t *allEvents) {
+ if(strstr(verboseOption,"tim") || strstr(verboseOption,"all"))
+ gBenchmark->Start("TOFSDigitizer");
AliTOF *TOF = (AliTOF *) gAlice->GetDetector ("TOF");
return;
}
- if (fEdgeTails) ftail = new TF1("tail",TimeWithTailS,-2,2,3);
+ 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;
- if (fNevents == 0)
- fNevents = (Int_t) gAlice->TreeE()->GetEntries();
+ if (strstr(allEvents,"all")){
+ fEvent1=0;
+ fEvent2= (Int_t) gAlice->TreeE()->GetEntries();
+ }
+
+ for (Int_t ievent = fEvent1; ievent < fEvent2; ievent++) {
+ cout << "------------------- "<< GetName() << " -------------" << endl ;
+ cout << "Sdigitizing event " << ievent << endl;
+
+ Int_t nselectedHitsinEv=0;
+ Int_t ntotalsdigitsinEv=0;
+ Int_t ntotalupdatesinEv=0;
+ Int_t nnoisesdigitsinEv=0;
+ Int_t nsignalsdigitsinEv=0;
- for (Int_t ievent = 0; ievent < fNevents; ievent++) {
gAlice->GetEvent(ievent);
TTree *TH = gAlice->TreeH ();
if (!TH)
vol[3] = tofHit->GetPadx();
vol[4] = tofHit->GetPadz();
- Bool_t isCloneOfThePrevious=((tracknum==previousTrack) && (vol[0]==previousSector) && (vol[1]==previousPlate) && (vol[2]==previousStrip) && (vol[3]==previousPadX) && (vol[4]==previousPadZ));
-
+ Bool_t dummy=((tracknum==previousTrack) && (vol[0]==previousSector) && (vol[1]==previousPlate) && (vol[2]==previousStrip));
+
+ Bool_t isCloneOfThePrevious=dummy && ((vol[3]==previousPadX) && (vol[4]==previousPadZ));
+
+ // much stronger check to be inserted here
+
if(!isCloneOfThePrevious){
// update "previous" values
// in fact, we are yet in the future, so the present is past
previousPadX=vol[3];
previousPadZ=vol[4];
- // 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;
-
- // 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);
- } else {
- TOF->AddSDigit(tracknum, vol, digit);
- hitMap->SetHit(vol);
- }
+ nselectedHits++;
+ nselectedHitsinEv++;
+ if (particle->GetFirstMother() < 0){
+ nHitsFromPrim++;
+ } // counts hits due to primary particles
+
+ Float_t Xpad = tofHit->GetDx();
+ Float_t Zpad = tofHit->GetDz();
+ Float_t xStrip=AliTOFConstants::fgkXPad*(vol[3]-0.5-0.5*AliTOFConstants::fgkNpadX)+Xpad;
+ Float_t zStrip=AliTOFConstants::fgkZPad*(vol[4]-0.5-0.5*AliTOFConstants::fgkNpadZ)+Zpad;
+ Float_t geantTime = tofHit->GetTof(); // unit [s]
+ geantTime *= 1.e+09; // conversion from [s] to [ns]
+
+ //cout << "geantTime " << geantTime << " [ns]" << endl;
+ 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 -> 25. 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]<=AliTOFConstants::fgkNpadX) ? vol[4] = 1 : vol[4] = 2;
+ (nPlace[indexOfPad]<=AliTOFConstants::fgkNpadX) ? vol[3] = nPlace[indexOfPad] : vol[3] = nPlace[indexOfPad] - AliTOFConstants::fgkNpadX;
+ }
+
+ // 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(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)
} // end loop on hits for the current track
} // end loop on ntracks
gAlice->TreeS()->Reset();
gAlice->TreeS()->Fill();
- gAlice->TreeS()->Write(0,TObject::kOverwrite) ;
- } //event loop
+ //gAlice->TreeS()->Write(0,TObject::kOverwrite) ;
+ gAlice->TreeS()->AutoSave();
+
+ if(strstr(verboseOption,"all")){
+ cout << "----------------------------------------" << endl;
+ cout << " <AliTOFSDigitizer> " << endl;
+ cout << "After sdigitizing " << nselectedHitsinEv << " hits" << " in event " << ievent << endl;
+ //" (" << nHitsFromPrim << " from primaries and " << nHitsFromSec << " from secondaries) TOF hits, "
+ cout << ntotalsdigitsinEv << " digits have been created " << endl;
+ cout << "(" << nsignalsdigitsinEv << " due to signals and " << nnoisesdigitsinEv << " due to border effect)" << endl;
+ cout << ntotalupdatesinEv << " total updates of the hit map have been performed in current event" << endl;
+ cout << "----------------------------------------" << endl;
+ }
+
+ } //event loop on events
+
+ // free used memory
+ if (ftail){
+ delete ftail;
+ ftail = 0;
+ }
+
+ nHitsFromSec=nselectedHits-nHitsFromPrim;
+ if(strstr(verboseOption,"all")){
+ cout << "----------------------------------------" << endl;
+ cout << "----------------------------------------" << endl;
+ cout << "-----------SDigitization Summary--------" << endl;
+ cout << " <AliTOFSDigitizer> " << endl;
+ cout << "After sdigitizing " << nselectedHits << " hits" << endl;
+ cout << "in " << (fEvent2-fEvent1) << " events" << endl;
+//" (" << nHitsFromPrim << " from primaries and " << nHitsFromSec << " from secondaries) TOF hits, "
+ cout << ntotalsdigits << " sdigits have been created " << endl;
+ cout << "(" << nsignalsdigits << " due to signals and " << nnoisesdigits << " due to border effect)" << endl;
+ cout << ntotalupdates << " total updates of the hit map have been performed" << endl;
+ cout << "in " << nlargeTofDiff << " cases the time of flight difference is greater than 200 ps" << endl;
+ }
+
+ if(strstr(verboseOption,"tim") || strstr(verboseOption,"all")){
+ gBenchmark->Stop("TOFSDigitizer");
+ cout << "AliTOFSDigitizer:" << endl ;
+ cout << " took " << gBenchmark->GetCpuTime("TOFSDigitizer") << " seconds in order to make sdigits "
+ << gBenchmark->GetCpuTime("TOFSDigitizer")/(fEvent2-fEvent1) << " seconds per event " << endl ;
+ cout << endl ;
+ }
+ Print("");
}
//__________________________________________________________________
cout << "Changing SDigits file from " <<(char *)fSDigitsFile.Data() << " to " << file << endl ;
fSDigitsFile=file ;
}
+
//__________________________________________________________________
-void AliTOFSDigitizer::Print(Option_t* option)const
+void AliTOFSDigitizer::Print(Option_t* opt)const
{
cout << "------------------- "<< GetName() << " -------------" << endl ;
if(fSDigitsFile.IsNull())
- cout << " Writing SDigitis to file galice.root "<< endl ;
+ cout << " Writing SDigits to file with hits "<< endl ;
else
- cout << " Writing SDigitis to file " << (char*) fSDigitsFile.Data() << endl ;
-
+ cout << " Writing SDigits to file " << (char*) fSDigitsFile.Data() << endl ;
+ cout << "--------------------------------------------------" << endl;
}
//__________________________________________________________________
cout << " Parameters used for TOF SDigitization " << endl ;
// Printing the parameters
- cout << " Number of events: " << fNevents << endl;
-
+ 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;
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff