* 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 "TTask.h"
-#include "TTree.h"
-#include "TSystem.h"
-#include "TFile.h"
+#include <Riostream.h>
+#include <stdlib.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 "AliTOFdigit.h"
-#include "AliTOFhit.h"
+#include "AliDetector.h"
+#include "AliLoader.h"
+#include "AliRun.h"
+#include "AliRunLoader.h"
#include "AliTOF.h"
+#include "AliTOFConstants.h"
+#include "AliTOFHitMap.h"
+#include "AliTOFSDigit.h"
+#include "AliTOFSDigitizer.h"
+#include "AliTOFhit.h"
+#include "AliTOFhitT0.h"
#include "AliTOFv1.h"
#include "AliTOFv2.h"
#include "AliTOFv3.h"
#include "AliTOFv4.h"
-#include "AliTOFSDigitizer.h"
-#include "AliRun.h"
-#include "AliDetector.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","")
{
// ctor
- fNevents = 0 ;
- fSDigits = 0 ;
- fHits = 0 ;
+ fRunLoader = 0 ;
+
+ fEvent1=0;
+ fEvent2=0;
+ ftail = 0;
+ fSelectedSector=0;
+ fSelectedPlate =0;
}
//____________________________________________________________________________
- AliTOFSDigitizer::AliTOFSDigitizer(char* HeaderFile,char *SdigitsFile ):TTask("AliTOFSDigitizer","")
+ AliTOFSDigitizer::AliTOFSDigitizer(char* HeaderFile, 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;
+ ftail = 0;
+ fSelectedSector=0; // by default we sdigitize all sectors
+ fSelectedPlate =0; // 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") ;
+ }
+
+ // init parameters for sdigitization
+ InitParameters();
+
// add Task to //root/Tasks folder
- TTask * roottasks = (TTask*)gROOT->GetRootFolder()->FindObject("Tasks") ;
- roottasks->Add(this) ;
+ fRunLoader = AliRunLoader::Open(HeaderFile);//open session and mount on default event folder
+ if (fRunLoader == 0x0)
+ {
+ Fatal("AliTOFSDigitizer","Event is not loaded. Exiting");
+ return;
+ }
+ AliLoader* gime = fRunLoader->GetLoader("TOFLoader");
+ if (gime == 0x0)
+ {
+ Fatal("AliTOFSDigitizer","Can not find TOF loader in event. Exiting.");
+ return;
+ }
+ gime->PostSDigitizer(this);
}
//____________________________________________________________________________
// dtor
}
-//____________________________________________________________________________
-void AliTOFSDigitizer::Exec(Option_t *option) {
-
-
- // Initialise Hit array
- fHits = new TClonesArray ("AliTOFhit", 1000);
- fSDigits = new TClonesArray ("AliTOFdigit", 1000);
-
- AliTOF *TOF = (AliTOF *) gAlice->GetDetector ("TOF");
-
- if (fNevents == 0)
- fNevents = (Int_t) gAlice->TreeE ()->GetEntries ();
-
- for (Int_t ievent = 0; ievent < fNevents; ievent++)
- {
- gAlice->GetEvent (ievent);
- if (gAlice->TreeH () == 0)
- return;
- if (gAlice->TreeS () == 0)
- gAlice->MakeTree ("S");
-
-
- //Make branches
- char branchname[20];
- sprintf (branchname, "%s", TOF->GetName ());
- //Make branch for digits
- TOF->MakeBranch ("S");
-
- //Now made SDigits from hits
-
- Int_t tracks[3]; // track info
- Int_t vol[5]; // location for a digit
- Float_t digit[2]; // TOF digit variables
- Int_t hit, nbytes;
- TParticle *particle;
- AliTOFhit *tofHit;
- TClonesArray *TOFhits = TOF->Hits();
-
-
- // Event ------------------------- LOOP
-
-
- if (TOF)
- {
- TOFhits = TOF->Hits ();
- TTree *TH = gAlice->TreeH ();
- Stat_t ntracks = TH->GetEntries ();
- for (Int_t track = 0; track < ntracks; track++)
- {
- gAlice->ResetHits ();
- nbytes += TH->GetEvent (track);
- particle = gAlice->Particle (track);
- Int_t nhits = TOFhits->GetEntriesFast ();
-
- for (hit = 0; hit < nhits; hit++)
- {
- tofHit = (AliTOFhit *) TOFhits->UncheckedAt(hit);
- vol[0] = tofHit->GetSector();
- vol[1] = tofHit->GetPlate();
- vol[2] = tofHit->GetPadx();
- vol[3] = tofHit->GetPadz();
- vol[4] = tofHit->GetStrip();
-
- // 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, fTimeRes);
- 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, fChrgRes);
- Float_t adccharge = gRandom->Gaus(idealcharge, TOF->GetChrgRes());
- digit[1] = adccharge;
- Int_t tracknum = tofHit->GetTrack();
- tracks[0] = tracknum;
- tracks[1] = 0;
- tracks[2] = 0;
-
- // check if two digit are on the same pad; in that case we sum
- // the two or more digits
-// Bool_t overlap = AliTOF::CheckOverlap(vol, digit, tracknum);
- Bool_t overlap = TOF->CheckOverlap(vol, digit, tracknum);
- if(!overlap)
- // new ((*fSDigits)[nSdigits++]) AliTOFdigit(tracks, vol, digit);
- TOF->AddSDigit(tracks, vol, digit);
- cout << "nSdigits" << endl;
- } // end loop on hits for the current track
-
- } // end loop on ntracks
-
- } // close if TOF switched ON
-
- gAlice->TreeS()->Reset();
- gAlice->TreeS()->Fill();
- gAlice->TreeS()->Write(0,TObject::kOverwrite) ;
- } //event loop
-
-
-}
-
-//__________________________________________________________________
-void AliTOFSDigitizer::SetSDigitsFile(char * file ){
- if(!fSDigitsFile.IsNull())
- cout << "Changing SDigits file from " <<(char *)fSDigitsFile.Data() << " to " << file << endl ;
- fSDigitsFile=file ;
+//____________________________________________________________________________
+void AliTOFSDigitizer::InitParameters()
+{
+ // set parameters for detector simulation
+
+ fTimeResolution =0.120;
+ 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;
+ fResCenter = 50. ;
+ fResBoundary = 70. ;
+ fResSlope = 40. ;
+ 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
}
+
//__________________________________________________________________
-void AliTOFSDigitizer::Print(Option_t* option)const
+Double_t TimeWithTail(Double_t* x, Double_t* par)
{
- cout << "------------------- "<< GetName() << " -------------" << endl ;
- if(fSDigitsFile.IsNull())
- cout << " Writing SDigitis to file galice.root "<< endl ;
- else
- cout << " Writing SDigitis to file " << (char*) fSDigitsFile.Data() << endl ;
-
+ // 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 *verboseOption, Option_t *allEvents) {
+
+ fRunLoader->LoadgAlice();
+ fRunLoader->LoadHeader();
+ gAlice = fRunLoader->GetAliRun();
+
+ AliLoader* gime = fRunLoader->GetLoader("TOFLoader");
+ gime->LoadHits("read");
+ gime->LoadSDigits("recreate");
+ if(strstr(verboseOption,"tim") || strstr(verboseOption,"all"))
+ gBenchmark->Start("TOFSDigitizer");
+
+ AliTOF *TOF = (AliTOF *) gAlice->GetDetector("TOF");
+
+ if (!TOF) {
+ Error("AliTOFSDigitizer","TOF not found");
+ return;
+ }
+
+ // is pointer to fSDigits non zero after changes?
+ cout<<"TOF fSDigits pointer:"<<TOF->SDigits()<<endl;
+
+ // recreate TClonesArray fSDigits - for backward compatibility
+ if (TOF->SDigits() == 0) {
+ TOF->CreateSDigitsArray();
+ } else {
+ TOF->RecreateSDigitsArray();
+ }
+
+ Int_t version=TOF->IsVersion();
+
+ 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 (strstr(allEvents,"all")){
+ fEvent1=0;
+ fEvent2= (Int_t) gAlice->TreeE()->GetEntries();
+ }
+
+ Bool_t thereIsNotASelection=(fSelectedSector==0) && (fSelectedPlate==0);
+
+ 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;
+
+ fRunLoader->GetEvent(ievent);
+ TOF->SetTreeAddress();
+ TTree *TH = gime->TreeH ();
+ if (!TH)
+ return;
+ if (gime->TreeS () == 0)
+ gime->MakeTree ("S");
+
+ //Make branches
+ char branchname[20];
+ sprintf (branchname, "%s", TOF->GetName ());
+ //Make branch for digits
+ TOF->MakeBranch("S");
+
+ //Now made SDigits from hits
+ TParticle *particle;
+ //AliTOFhit *tofHit;
+ TClonesArray *TOFhits = TOF->Hits();
+ // create hit map
+ AliTOFHitMap *hitMap = new AliTOFHitMap(TOF->SDigits());
+ // increase performances in terms of CPU time
+ //PH TH->SetBranchStatus("*",0); // switch off all branches
+ //PH TH->SetBranchStatus("TOF*",1); // switch on only TOF
+ TBranch * tofHitsBranch = TH->GetBranch("TOF");
+ Int_t ntracks = static_cast<Int_t>(TH->GetEntries());
+ for (Int_t track = 0; track < ntracks; track++)
+ {
+ gAlice->ResetHits();
+ //PH TH->GetEvent(track);
+ tofHitsBranch->GetEvent(track);
+ particle = gAlice->Particle(track);
+ Int_t nhits = TOFhits->GetEntriesFast();
+ // cleaning all hits of the same track in the same pad volume
+ // it is a rare event, however it happens
+
+ Int_t previousTrack =0;
+ Int_t previousSector=0;
+ Int_t previousPlate =0;
+ Int_t previousStrip =0;
+ Int_t previousPadX =0;
+ Int_t previousPadZ =0;
+
+ 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 Xpad;
+ Float_t Zpad;
+ Float_t geantTime;
+
+ // fp: really sorry for this, it is a temporary trick to have
+ // track length too
+ if(version!=6){
+ AliTOFhit *tofHit = (AliTOFhit *) TOFhits->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();
+ Xpad = tofHit->GetDx();
+ Zpad = tofHit->GetDz();
+ geantTime = tofHit->GetTof(); // unit [s]
+ } else {
+ AliTOFhitT0 *tofHit = (AliTOFhitT0 *) TOFhits->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();
+ Xpad = tofHit->GetDx();
+ Zpad = 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=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;
+
+ //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 -> 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]<=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(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;
+
+ gime->TreeS()->Reset();
+ gime->TreeS()->Fill();
+ //gAlice->TreeS()->Write(0,TObject::kOverwrite) ;
+ gime->WriteSDigits("OVERWRITE");
+
+ 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("");
+}
+//__________________________________________________________________
+void AliTOFSDigitizer::Print(Option_t* opt)const
+{
+ cout << "------------------- "<< GetName() << " -------------" << endl ;
+}
+//__________________________________________________________________
+void AliTOFSDigitizer::SelectSectorAndPlate(Int_t sector, Int_t plate)
+{
+ Bool_t isaWrongSelection=(sector < 1) || (sector > AliTOFConstants::fgkNSectors) || (plate < 1) || (plate > AliTOFConstants::fgkNPlates);
+ if(isaWrongSelection){
+ cout << "You have selected an invalid value for sector or plate " << endl;
+ cout << "The correct range for sector is [1,"<< AliTOFConstants::fgkNSectors <<"]" << endl;
+ cout << "The correct range for plate is [1,"<< AliTOFConstants::fgkNPlates <<"]" << endl;
+ cout << "By default we continue sdigitizing all hits in all plates of all sectors" << endl;
+ } 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] = {AliTOFConstants::fgkSigmaForTail1,AliTOFConstants::fgkSigmaForTail2}; //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 * AliTOFConstants::fgkNpadZ - iz - 0.5) * AliTOFConstants::fgkZPad; // hit position in the pad frame, (0,0) - center of the pad
+ z = 0.5 * AliTOFConstants::fgkZPad - TMath::Abs(dZ); // variable for eff., res. and timeWalk. functions
+ iz++; // z row: 1, ..., AliTOFConstants::fgkNpadZ = 2
+ ix = (Int_t)((x0 + 0.5 * AliTOFConstants::fgkNpadX * AliTOFConstants::fgkXPad) / AliTOFConstants::fgkXPad);
+ dX = x0 + (0.5 * AliTOFConstants::fgkNpadX - ix - 0.5) * AliTOFConstants::fgkXPad; // hit position in the pad frame, (0,0) - center of the pad
+ x = 0.5 * AliTOFConstants::fgkXPad - TMath::Abs(dX); // variable for eff., res. and timeWalk. functions;
+ ix++; // x row: 1, ..., AliTOFConstants::fgkNpadX = 48
+
+ ////// Pad A:
+ nActivatedPads++;
+ nPlace[nActivatedPads-1] = (iz - 1) * AliTOFConstants::fgkNpadX + 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(10400 + fResCenter * fResCenter); // 10400=30^2+20^2+40^2+50^2+50^2+50^2 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(10400 + resX * resX) : res[nActivatedPads-1] = 0.001 * TMath::Sqrt(10400 + resZ * resZ); // 10400=30^2+20^2+40^2+50^2+50^2+50^2 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) * AliTOFConstants::fgkNpadX;
+ eff[nActivatedPads-1] = effZ;
+ res[nActivatedPads-1] = 0.001 * TMath::Sqrt(10400 + resZ * resZ); // 10400=30^2+20^2+40^2+50^2+50^2+50^2 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(10400 + resX * resX); // 10400=30^2+20^2+40^2+50^2+50^2+50^2 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) * AliTOFConstants::fgkNpadX - 1;
+ eff[nActivatedPads-1] = effX * effZ;
+ (resZ<resX) ? res[nActivatedPads-1] = 0.001 * TMath::Sqrt(10400 + resX * resX) : res[nActivatedPads-1] = 0.001 * TMath::Sqrt(10400 + resZ * resZ); // 10400=30^2+20^2+40^2+50^2+50^2+50^2 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 < AliTOFConstants::fgkNpadX && dX > 0) {
+ nActivatedPads++;
+ nPlace[nActivatedPads-1] = nPlace[0] + 1;
+ eff[nActivatedPads-1] = effX;
+ res[nActivatedPads-1] = 0.001 * (TMath::Sqrt(10400 + 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) * AliTOFConstants::fgkNpadX + 1;
+ eff[nActivatedPads - 1] = effX * effZ;
+ (resZ<resX) ? res[nActivatedPads-1] = 0.001 * TMath::Sqrt(10400 + resX * resX) : res[nActivatedPads-1] = 0.001 * TMath::Sqrt(10400 + resZ * resZ); // 10400=30^2+20^2+40^2+50^2+50^2+50^2 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)
+}
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+//__________________________________________________________________
+void AliTOFSDigitizer::PrintParameters()const
+{
+ //
+ // 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;
+
+}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff