bug fix : slew correction in reconstruction from Digits for amplitude measured as...
[u/mrichter/AliRoot.git] / T0 / AliT0Reconstructor.cxx
index 50871b4..15cc7e6 100644 (file)
@@ -34,7 +34,7 @@
 #include <TArrayI.h>
 #include <TGraph.h>
 #include <TMath.h>
-//#include <iostream.h>
+#include <Riostream.h>
 
 ClassImp(AliT0Reconstructor)
 
@@ -43,75 +43,56 @@ ClassImp(AliT0Reconstructor)
                                             fdZonC(0),
                                             fZposition(0),
                                             fParam(NULL),
-                                            fAmpLEDrec()
+                                            fAmpLEDrec(),
+                                            fQTC(0),
+                                            fAmpLED(0),
+                                            fCalib()
 {
   //constructor
 
- AliDebug(1,"Start reconstructor ");
-  
   fParam = AliT0Parameters::Instance();
   fParam->Init();
   for (Int_t i=0; i<24; i++){
-    TGraph* gr = fParam ->GetAmpLEDRec(i);
-    fAmpLEDrec.AddAtAndExpand(gr,i) ;  
+        TGraph* gr = fParam ->GetAmpLEDRec(i);
+       if (gr) fAmpLEDrec.AddAtAndExpand(gr,i) ; 
+         TGraph* gr1 = fParam ->GetAmpLED(i);
+         if (gr1) fAmpLED.AddAtAndExpand(gr1,i) ; 
+         TGraph* gr2 = fParam ->GetQTC(i);
+         if (gr2) fQTC.AddAtAndExpand(gr2,i) ;         
   }
+
+  
   fdZonC = TMath::Abs(fParam->GetZPositionShift("T0/C/PMT1"));
   fdZonA = TMath::Abs(fParam->GetZPositionShift("T0/A/PMT15"));
 
-}
-//____________________________________________________________________
-
-AliT0Reconstructor::AliT0Reconstructor(const AliT0Reconstructor &r):
-  AliReconstructor(r),
-                                            fdZonA(0),
-                                            fdZonC(0),
-                                            fZposition(0),
-                                            fParam(NULL),
-  fAmpLEDrec()
- {
-  //
-  // AliT0Reconstructor copy constructor
-  //
-
-  ((AliT0Reconstructor &) r).Copy(*this);
-
-}
-
-//_____________________________________________________________________________
-AliT0Reconstructor &AliT0Reconstructor::operator=(const AliT0Reconstructor &r)
-{
-  //
-  // Assignment operator
-  //
-
-  if (this != &r) ((AliT0Reconstructor &) r).Copy(*this);
-  return *this;
+  fCalib = new AliT0Calibrator();
 
 }
 
 //_____________________________________________________________________________
-
 void AliT0Reconstructor::Reconstruct(TTree*digitsTree, TTree*clustersTree) const
   
 {
   // T0 digits reconstruction
-  // T0RecPoint writing 
+  Int_t refAmp = GetRecoParam()->GetRefAmp();
   
-   
   TArrayI * timeCFD = new TArrayI(24); 
   TArrayI * timeLED = new TArrayI(24); 
   TArrayI * chargeQT0 = new TArrayI(24); 
   TArrayI * chargeQT1 = new TArrayI(24); 
 
-  AliT0Calibrator *calib=new AliT0Calibrator(); 
-
-  //  Int_t mV2Mip = param->GetmV2Mip();     
-  //mV2Mip = param->GetmV2Mip();     
   Float_t channelWidth = fParam->GetChannelWidth() ;  
-  Int_t meanT0 = fParam->GetMeanT0();
+  Float_t meanVertex = fParam->GetMeanVertex();
+  Float_t c = 0.0299792; // cm/ps
+  Float_t vertex = 9999999;
+  Int_t timeDiff=999999, meanTime=999999, timeclock=999999;
+
   
   AliDebug(1,Form("Start DIGITS reconstruction "));
   
+
   TBranch *brDigits=digitsTree->GetBranch("T0");
   AliT0digit *fDigits = new AliT0digit() ;
   if (brDigits) {
@@ -128,33 +109,41 @@ void AliT0Reconstructor::Reconstruct(TTree*digitsTree, TTree*clustersTree) const
   fDigits->GetTimeLED(*timeLED);
   fDigits->GetQT0(*chargeQT0);
   fDigits->GetQT1(*chargeQT1);
+  Int_t onlineMean =  fDigits->MeanTime();
+  Int_t ref =  fDigits->RefPoint();
 
   
   Float_t besttimeA=999999;
   Float_t besttimeC=999999;
   Int_t pmtBestA=99999;
   Int_t pmtBestC=99999;
-  Float_t timeDiff=999999, meanTime=0;
   
-
-
   AliT0RecPoint* frecpoints= new AliT0RecPoint ();
   clustersTree->Branch( "T0", "AliT0RecPoint" ,&frecpoints, 405,1);
   
   Float_t time[24], adc[24];
   for (Int_t ipmt=0; ipmt<24; ipmt++) {
     if(timeCFD->At(ipmt)>0 ){
-      Double_t qt0 = Double_t(chargeQT0->At(ipmt));
-      Double_t qt1 = Double_t(chargeQT1->At(ipmt));
-      if((qt1-qt0)>0)  adc[ipmt] = TMath::Exp( Double_t (channelWidth*(qt1-qt0)/1000));
-      time[ipmt] = calib-> WalkCorrection( ipmt, Int_t(qt1) , timeCFD->At(ipmt), "pdc" ) ;
+     if(( chargeQT1->At(ipmt) - chargeQT0->At(ipmt))>0)  
+       adc[ipmt] = chargeQT1->At(ipmt) - chargeQT0->At(ipmt);
+      else
+       adc[ipmt] = 0;
+      
+     // time[ipmt] = fCalib-> WalkCorrection(refAmp, ipmt, adc[ipmt],  timeCFD->At(ipmt)) ;
+            
+      Double_t sl = Double_t(timeLED->At(ipmt) - timeCFD->At(ipmt));
+      time[ipmt] = fCalib-> WalkCorrection( refAmp,ipmt, Int_t(sl),  timeCFD->At(ipmt) ) ;
+      AliDebug(10,Form(" ipmt %i QTC %i , time in chann %i (led-cfd) %i ",
+                      ipmt, Int_t(adc[ipmt]) ,Int_t(time[ipmt]),Int_t( sl)));
+
+      Double_t ampMip =((TGraph*)fAmpLED.At(ipmt))->Eval(sl);
+      Double_t qtMip = ((TGraph*)fQTC.At(ipmt))->Eval(adc[ipmt]);
+      AliDebug(10,Form("  Amlitude in MIPS LED %f ,  QTC %f in channels %i\n ",ampMip,qtMip, adc[ipmt]));
+      
+      frecpoints->SetTime(ipmt, Float_t(time[ipmt]) );
+      frecpoints->SetAmp(ipmt, Float_t( ampMip)); //for cosmic &pp beam 
+      frecpoints->SetAmpLED(ipmt, Float_t(qtMip));
       
-      //LED
-      Double_t sl = (timeLED->At(ipmt) - time[ipmt])*channelWidth;
-      Double_t qt=((TGraph*)fAmpLEDrec.At(ipmt))->Eval(sl/1000.);
-      frecpoints->SetTime(ipmt,time[ipmt]);
-      frecpoints->SetAmp(ipmt,adc[ipmt]);
-      frecpoints->SetAmpLED(ipmt,qt);
     }
     else {
       time[ipmt] = 0;
@@ -179,26 +168,23 @@ void AliT0Reconstructor::Reconstruct(TTree*digitsTree, TTree*clustersTree) const
   }
   if(besttimeA !=999999)  frecpoints->SetTimeBestA(Int_t(besttimeA));
   if( besttimeC != 999999 ) frecpoints->SetTimeBestC(Int_t(besttimeC));
-  AliDebug(1,Form(" besttimeA %f ps,  besttimeC %f ps",besttimeA, besttimeC));
-  Float_t c = 0.0299792; // cm/ps
-  Float_t vertex = 0;
-  if(besttimeA !=999999 && besttimeC != 999999 ){
-    timeDiff =(besttimeC - besttimeA)*channelWidth;
-    meanTime = (meanT0 - (besttimeA + besttimeC)/2) * channelWidth;
-    vertex = c*(timeDiff)/2. + (fdZonA - fdZonC)/2; //-(lenr-lenl))/2;
-    AliDebug(1,Form("  timeDiff %f ps,  meanTime %f ps, vertex %f cm",timeDiff, meanTime,vertex ));
+  AliDebug(10,Form(" besttimeA %f ch,  besttimeC %f ch",besttimeA, besttimeC));
+    if(besttimeA !=999999 && besttimeC != 999999 ){
+    //    timeDiff = (besttimeC - besttimeA)*channelWidth;
+    timeDiff = (besttimeA - besttimeC)*channelWidth;
+    meanTime = Float_t((besttimeA + besttimeC)/2);// * channelWidth); 
+    timeclock = Float_t(meanTime - ref);
+    vertex = meanVertex - c*(timeDiff)/2.;// + (fdZonA - fdZonC)/2; 
+   }
     frecpoints->SetVertex(vertex);
-    frecpoints->SetMeanTime(Int_t(meanTime));
+    frecpoints->SetMeanTime(meanTime);
+    frecpoints->SetT0clock(timeclock);
+    //online mean
+    frecpoints->SetOnlineMean(Int_t(onlineMean));
+    AliDebug(10,Form("  timeDiff %i #channel,  meanTime %i #channel, vertex %f cm online mean %i timeclock %i ps",timeDiff, meanTime,vertex, Int_t(onlineMean), timeclock));
     
-  }
-  //time in each channel as time[ipmt]-MeanTimeinThisChannel(with vertex=0)
-  for (Int_t ipmt=0; ipmt<24; ipmt++) {
-    if(time[ipmt]>1) {
-//      time[ipmt] = (time[ipmt] - fTime0vertex[ipmt])*channelWidth;
-      time[ipmt] = time[ipmt] * channelWidth;
-      frecpoints->SetTime(ipmt,time[ipmt]);
-    }
-  }
+    //  }
+  
   clustersTree->Fill();
 
   delete timeCFD;
@@ -213,172 +199,159 @@ void AliT0Reconstructor::Reconstruct(TTree*digitsTree, TTree*clustersTree) const
 void AliT0Reconstructor::Reconstruct(AliRawReader* rawReader, TTree*recTree) const
 {
   // T0 raw ->
-  // T0RecPoint writing 
-  
-  //Q->T-> coefficients !!!! should be measured!!!
-  Int_t allData[110][5];
+  //
+  // reference amplitude and time ref. point from reco param
 
-  Int_t timeCFD[24], timeLED[24], chargeQT0[24], chargeQT1[24];
-  TString option = GetOption(); 
-  AliDebug(1,Form("Option: %s\n", option.Data()));
+  Int_t refAmp = GetRecoParam()->GetRefAmp();
+  Int_t refPoint = GetRecoParam()->GetRefPoint();
+
+  Int_t allData[110][5];
   
+  Int_t timeCFD[24], timeLED[24], chargeQT0[24], chargeQT1[24];
+  Int_t timeDiff=999999, meanTime=999999, timeclock=999999;
+  Float_t c = 0.0299792458; // cm/ps
+  Float_t vertex = 9999999;
+  Int_t onlineMean=0;
   for (Int_t i0=0; i0<105; i0++)
     {
       for (Int_t j0=0; j0<5; j0++) allData[i0][j0]=0;  
     }
-  
-  
-  AliDebug(10," before read data ");
-  AliT0RawReader myrawreader(rawReader);
-  if (!myrawreader.Next())
-    AliDebug(1,"No T0 raw data found!");
-  
-  for (Int_t i=0; i<105; i++) {
-    for (Int_t iHit=0; iHit<5; iHit++) 
-      {
-       allData[i][iHit] = myrawreader.GetData(i,iHit);
-      }
-  }
-  AliT0Calibrator *calib = new AliT0Calibrator(); 
-  
-  //  Int_t mV2Mip = param->GetmV2Mip();     
-  //mV2Mip = param->GetmV2Mip();     
-  Float_t channelWidth = fParam->GetChannelWidth() ;  
-  
-  Int_t meanT0 = fParam->GetMeanT0();
-  if(option == "pdc"){
-    for (Int_t in=0; in<24; in++)  
-      {
-       
-       timeLED[in] = allData[in+1][0];
-       timeCFD[in] = allData[in+25][0];
-       chargeQT1[in] = allData[in+57][0];
-       chargeQT0[in] = allData[in+80][0];
-      }
-  }
-
-  if(option == "cosmic") {
-    for (Int_t in=0; in<12; in++)  
-      {
-       timeCFD[in] = allData[in+1][0];
-       timeCFD[in+12] = allData[in+1][0];
-       timeLED[in] = allData[in+12+1][0];
-       timeLED[in+12] = allData[in+68+1][0];
-      }
-    
-    for (Int_t in=0; in<24;  in=in+2)
-      {
-      Int_t cc=in/2;
-      chargeQT1[cc]=allData[in+25][0];
-      chargeQT0[cc]=allData[in+26][0];
-      }
-    for (Int_t in=24; in<48;  in=in+2)
-    {
-      Int_t cc=in/2;
-      chargeQT1[cc]=allData[in+57][0];
-      chargeQT0[cc]=allData[in+58][0];
-    }
-    
-  }
-    for (Int_t in=0; in<24; in++)  
-       AliDebug(10, Form(" readed Raw %i %i %i %i %i", in, timeLED[in],timeCFD[in],chargeQT0[in],chargeQT1[in]));
-     
-
+   
   Float_t besttimeA=9999999;
   Float_t besttimeC=9999999;
   Int_t pmtBestA=99999;
   Int_t pmtBestC=99999;
-  Float_t timeDiff=9999999, meanTime=0;
-  Double_t qt=0;
-  
+  Float_t meanVertex = fParam->GetMeanVertex();
+   
   AliT0RecPoint* frecpoints= new AliT0RecPoint ();
-  recTree->Branch( "T0", "AliT0RecPoint" ,&frecpoints, 405,1);
   
+  recTree->Branch( "T0", "AliT0RecPoint" ,&frecpoints, 405,1);
+   
+  AliDebug(10," before read data ");
+  AliT0RawReader myrawreader(rawReader);
 
-  Float_t time[24], adc[24];
-  for (Int_t ipmt=0; ipmt<24; ipmt++) {
-    if(timeCFD[ipmt]>0 ){
-     
-      if(option == "pdc"){
-       Double_t qt0 = Double_t(chargeQT0[ipmt]);
-       Double_t qt1 = Double_t(chargeQT1[ipmt]);
-       if((qt1-qt0)>0)  adc[ipmt] = TMath::Exp( Double_t (channelWidth*(qt1-qt0)/1000));
-
-       time[ipmt] = calib-> WalkCorrection( ipmt,Int_t(qt1) , timeCFD[ipmt] ) ;
-       Double_t sl = (timeLED[ipmt] - time[ipmt])*channelWidth;
-       if(fAmpLEDrec.At(ipmt)) 
-         qt=((TGraph*)fAmpLEDrec.At(ipmt))->Eval(sl/1000.);
-       frecpoints->SetTime(ipmt,time[ipmt]);
-       frecpoints->SetAmp(ipmt,adc[ipmt]);
-       frecpoints->SetAmpLED(ipmt,qt);
-       AliDebug(1,Form(" QTC %f mv,  time in chann %f ",adc[ipmt] ,time[ipmt]));
-      }
-      if(option == "cosmic") {
-       Float_t qt0 = Float_t(chargeQT0[ipmt]);
-       Float_t qt1 = Float_t(chargeQT1[ipmt]);
-       if((qt1-qt0)>0)  adc[ipmt] = qt1-qt0;
-       
-       time[ipmt] = calib-> WalkCorrection( ipmt, Int_t(adc[ipmt]), timeCFD[ipmt] ) ;
-       Double_t sl = timeLED[ipmt] - time[ipmt];
-       if(fAmpLEDrec.At(ipmt)) 
-         qt=((TGraph*)fAmpLEDrec.At(ipmt))->Eval(sl/1000.);
-       frecpoints->SetTime(ipmt,time[ipmt]);
-       frecpoints->SetAmp(ipmt,adc[ipmt]);
-       frecpoints->SetAmpLED(ipmt,qt);
-       AliDebug(10,Form(" ipmt %i QTC %i , time in chann %i led %i ",
-                       ipmt, Int_t(adc[ipmt]) ,Int_t(time[ipmt]),Int_t( qt)));
+  UInt_t type =rawReader->GetType();
+
+  if (!myrawreader.Next())
+    AliDebug(1,Form(" no raw data found!!"));
+  else
+    {  
+      if(type == 7) {  //only physics 
+      for (Int_t i=0; i<105; i++) {
+       for (Int_t iHit=0; iHit<5; iHit++) 
+         {
+           allData[i][iHit] = myrawreader.GetData(i,iHit);
+         }
       }
+      Int_t ref=0;
+      if (refPoint>0) 
+      ref = allData[refPoint][0]-5000.;
+
+      Float_t channelWidth = fParam->GetChannelWidth() ;  
       
-    }
-    else {
-      time[ipmt] = 0;
-      adc[ipmt] = 0;
-    }
-  }
-  
-  for (Int_t ipmt=0; ipmt<12; ipmt++){
-    if(time[ipmt] > 1 ) {
-      if(time[ipmt]<besttimeC){
-       besttimeC=time[ipmt]; //timeC
-       pmtBestC=ipmt;
-      }
-    }
-  }
-  for ( Int_t ipmt=12; ipmt<24; ipmt++){
-    if(time[ipmt] > 1) {
-      if(time[ipmt]<besttimeA) {
-       besttimeA=time[ipmt]; //timeA
-        pmtBestA=ipmt;}
-    }
-  }
-  if(besttimeA !=9999999)  frecpoints->SetTimeBestA(Int_t(besttimeA));
-  if( besttimeC != 9999999 ) frecpoints->SetTimeBestC(Int_t(besttimeC));
-  AliDebug(1,Form(" besttimeA %f ps,  besttimeC %f ps",besttimeA, besttimeC));
-  Float_t c = 0.0299792; // cm/ps
-  Float_t vertex = 99999;
-  if(besttimeA <9999999 && besttimeC < 9999999 ){
-    timeDiff =( besttimeC - besttimeA) *channelWidth;
-    if(option == "pdc") 
-      meanTime = (meanT0 - (besttimeA + besttimeC)/2) * channelWidth;
-    if(option == "cosmic")   meanTime =  (besttimeA + besttimeC)/2;  
-    vertex = c*(timeDiff)/2. + (fdZonA - fdZonC)/2; 
-    AliDebug(1,Form("  timeDiff %f ps,  meanTime %f ps, vertex %f cm",timeDiff, meanTime,vertex ));
-    frecpoints->SetVertex(vertex);
-    frecpoints->SetMeanTime(Int_t(meanTime));
-    
-  }
-  //time in each channel as time[ipmt]-MeanTimeinThisChannel(with vertex=0)
-  /*
-  for (Int_t ipmt=0; ipmt<24; ipmt++) {
-    if(time[ipmt]>1) {
-      time[ipmt] = (time[ipmt] - fTime0vertex[ipmt])*channelWidth;
-      frecpoints->SetTime(ipmt,time[ipmt]);
-    }
-    }
-  */
-  recTree->Fill();
+      //       Int_t meanT0 = fParam->GetMeanT0();
+       
+         
+         for (Int_t in=0; in<12; in++)  
+           {
+             timeCFD[in] = allData[in+1][0] ;
+             timeCFD[in+12] = allData[in+56+1][0] ;
+             timeLED[in] = allData[in+12+1][0] ;
+             timeLED[in+12] = allData[in+68+1][0] ;
+             AliDebug(10, Form(" readed i %i cfdC %i cfdA %i ledC %i ledA%i ",
+                               in, timeCFD[in],timeCFD[in+12],timeLED[in], 
+                               timeLED[in+12]));   
+           }
+         
+         for (Int_t in=0; in<12;  in++)
+           {
+             chargeQT0[in]=allData[2*in+25][0];
+             chargeQT1[in]=allData[2*in+26][0];
+           }
+         
+          for (Int_t in=12; in<24;  in++)
+            {
+              chargeQT0[in]=allData[2*in+57][0];
+              chargeQT1[in]=allData[2*in+58][0];
+            }
+          
+          //    } //cosmic with physics event
+       for (Int_t in=0; in<24; in++)  
+        AliDebug(10, Form(" readed Raw %i %i %i %i %i",
+                          in, timeLED[in],timeCFD[in],chargeQT0[in],chargeQT1[in]));
+        onlineMean = allData[49][0];       
+       
+       Float_t time[24], adc[24];
+       for (Int_t ipmt=0; ipmt<24; ipmt++) {
+        if(timeCFD[ipmt]>0 && timeLED[ipmt]>0){
+          //for simulated data
+            //for physics  data
+          if(( chargeQT1[ipmt] - chargeQT0[ipmt])>0)  
+            adc[ipmt] = chargeQT0[ipmt] - chargeQT1[ipmt];
+          else
+            adc[ipmt] = 0;
+          
+
+          //      time[ipmt] = fCalib-> WalkCorrection(refAmp, ipmt, adc[ipmt], timeCFD[ipmt] ) ;
+          
+          Double_t sl = timeLED[ipmt] - timeCFD[ipmt];
+          time[ipmt] = fCalib-> WalkCorrection( refAmp,ipmt, Int_t(sl), timeCFD[ipmt] ) ;
+          AliDebug(10,Form(" ipmt %i QTC %i , time in chann %i (led-cfd) %i ",
+                           ipmt, Int_t(adc[ipmt]) ,Int_t(time[ipmt]),Int_t( sl)));
+          Double_t ampMip =( (TGraph*)fAmpLED.At(ipmt))->Eval(sl);
+          Double_t qtMip = ((TGraph*)fQTC.At(ipmt))->Eval(adc[ipmt]);
+          AliDebug(10,Form("  Amlitude in MIPS LED %f ; QTC %f;  in channels %i\n ",ampMip,qtMip, adc[ipmt]));
+            
+          frecpoints->SetTime(ipmt, Float_t(time[ipmt]) );
+          frecpoints->SetAmpLED(ipmt, Float_t( qtMip)); //for cosmic &pp beam 
+          frecpoints->SetAmp(ipmt, Float_t(ampMip));
+            
+        }
+        else {
+          time[ipmt] = 0;
+          adc[ipmt] = 0;
+        }
+       }
+       
+       for (Int_t ipmt=0; ipmt<12; ipmt++){
+        if(time[ipmt] > 1 ) {
+          if(time[ipmt]<besttimeC){
+            besttimeC=time[ipmt]; //timeC
+            pmtBestC=ipmt;
+          }
+        }
+       }
+       for ( Int_t ipmt=12; ipmt<24; ipmt++){
+        if(time[ipmt] > 1) {
+          if(time[ipmt]<besttimeA) {
+            besttimeA=time[ipmt]; //timeA
+            pmtBestA=ipmt;}
+        }
+       }
+       if(besttimeA !=9999999)  frecpoints->SetTimeBestA(Int_t(besttimeA));
+       if( besttimeC != 9999999 ) frecpoints->SetTimeBestC(Int_t(besttimeC));
+       AliDebug(5,Form(" pmtA %i besttimeA %f ps, pmtC %i besttimeC %f #channel",
+                      pmtBestA,besttimeA, pmtBestC,  besttimeC));
+        if(besttimeA <9999999 && besttimeC < 9999999 ){
+        timeDiff = ( besttimeA - besttimeC) *channelWidth;
+        meanTime =  Float_t(((besttimeA-ref) + (besttimeC-ref))/2.);  
+        timeclock = Float_t(meanTime);
+        vertex =  meanVertex - c*(timeDiff)/2.; //+ (fdZonA - fdZonC)/2; 
+       }
+      }  //if phys event       
+      frecpoints->SetT0clock(timeclock);
+      frecpoints->SetVertex(vertex);
+      frecpoints->SetMeanTime(Int_t(meanTime));
+      frecpoints->SetOnlineMean(Int_t(onlineMean));
+      AliDebug(5,Form("  timeDiff %f #channel,  meanTime %f #channel, vertex %f cm meanVertex %f online mean %i ",timeDiff, meanTime,vertex,meanVertex, onlineMean));
+        
+       
+    } // if (else )raw data
+        recTree->Fill();
+        if(frecpoints) delete frecpoints;
 }
+       
+       
 //____________________________________________________________
 
 void AliT0Reconstructor::FillESD(TTree */*digitsTree*/, TTree *clustersTree, AliESDEvent *pESD) const
@@ -411,12 +384,14 @@ void AliT0Reconstructor::FillESD(TTree */*digitsTree*/, TTree *clustersTree, Ali
     Float_t amp[24], time[24];
     Float_t  zPosition = frecpoints -> GetVertex();
     Float_t timeStart = frecpoints -> GetMeanTime() ;
-    for ( Int_t i=0; i<24; i++) {
+    Float_t timeClock = frecpoints -> GetT0clock() ;
+     for ( Int_t i=0; i<24; i++) {
       time[i] = Float_t (frecpoints -> GetTime(i)); // ps to ns
       amp[i] = frecpoints -> GetAmp(i);
     }
     pESD->SetT0zVertex(zPosition); //vertex Z position 
     pESD->SetT0(timeStart);        // interaction time 
+    pESD->SetT0clock(timeClock);   // interaction time with ref.point(spectrum) 
     pESD->SetT0time(time);         // best TOF on each PMT 
     pESD->SetT0amplitude(amp);     // number of particles(MIPs) on each PMT