changes in calibration to fix hardware bug

[u/mrichter/AliRoot.git] / T0 / AliT0Calibrator.cxx

diff --git a/T0/AliT0Calibrator.cxx b/T0/AliT0Calibrator.cxx
index b714d6b31770c97adb52d70d035a654c66f656d1..be4a7874c8bf8f5da0eb865bfe6582025e9e4a7b 100644 (file)
--- a/T0/AliT0Calibrator.cxx
+++ b/T0/AliT0Calibrator.cxx
@@ -1,3 +1,4 @@
+
 /**************************************************************************
  * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
  *                                                                        *
@@ -29,30 +30,38 @@
 #include "AliLog.h"
 #include "AliT0Parameters.h"
 #include "AliT0Calibrator.h"
+#include "AliT0Reconstructor.h"
+#include "AliT0RecoParam.h"
 #include <TGraph.h>
 #include <TH1F.h>
+#include <TMath.h>
+#include <Riostream.h>
 
 ClassImp(AliT0Calibrator)
 
 //____________________________________________________________________
   AliT0Calibrator::AliT0Calibrator():TNamed(),
-  fChannelWidth(0),  
-  fWalk(0)
+                                    fChannelWidth(0),  
+                                    fWalk(0)
+                                    
 {
   //constructor
+   AliT0Parameters* param = AliT0Parameters::Instance();
+   param->Init();
+   //slewing correcion and equalizing channels
 
-  AliT0Parameters* param = AliT0Parameters::Instance();
-  param->Init();
-  
   fChannelWidth = param->GetChannelWidth() ;  
- 
+   //   Double_t *grX ; 
   for (Int_t i=0; i<24; i++){
+    fMaxValue[i]=0;
     fTimeDelayCFD[i] = Int_t (param->GetTimeDelayCFD(i));
-    TGraph* fu = param ->GetWalk(i);
+    //    TGraph* fu = param ->GetWalk(i);
+    // fWalk.AddAtAndExpand(fu,i);
+    TGraph* fu = param ->GetAmpLEDRec(i);
     fWalk.AddAtAndExpand(fu,i);
+     
   }
   
-  //
 }
 //_____________________________________________________________________________
 
@@ -82,25 +91,35 @@ AliT0Calibrator &AliT0Calibrator::operator=(const AliT0Calibrator &r)
 }
 
 
-
 //____________________________________________________________________
-Int_t  AliT0Calibrator::WalkCorrection(Int_t ipmt, Int_t qt, Int_t time, TString option) 
+
+Int_t  AliT0Calibrator::WalkCorrection(Int_t refAmp,  Int_t ipmt, Int_t qt, Int_t time) 
+
 {
-  //slewing correcion and equalizing channels
+  //
+  // referemce amplitude for walk correction now read from RecoParam
+
+  Double_t *grY ; 
+
+  Int_t walk=0;
 
   Int_t timeEq=0, timeWalk=0;  
   TGraph *fu1=(TGraph*) fWalk.At(ipmt);
-  Float_t walk=fu1->Eval(Float_t(qt));
-  TH1F*hr=fu1->GetHistogram();
-  Float_t maxValue=hr->GetMaximum(50);
-  if (option == "pdc")
-    timeWalk = time + Int_t((maxValue-walk)/fChannelWidth) ;
-  if (option == "cosmic")
-    timeWalk = time + Int_t((maxValue-walk)) ;
-  timeEq= timeWalk - (fTimeDelayCFD[ipmt]-fTimeDelayCFD[0]);
-  AliDebug(10,Form(" time before %i timeWalk %i ,  qt %i timeEq %i \n ",
-                 time,timeWalk, qt, timeEq ));
-  return timeEq;
+  if(fu1 && fu1->GetN()>0) {
+    grY = fu1->GetY();
+    fMaxValue[ipmt]=grY[refAmp-1];
+    //    TGraph* fu  = param ->GetAmpLEDRec(i);
+    walk = Int_t (fMaxValue[ipmt]) + Int_t(fu1->Eval(Double_t(qt)));
+  }
+  
+  timeWalk = time - walk   ;
+  timeEq= timeWalk - fTimeDelayCFD[ipmt];
+  // printf(" ipmt %i time before %i timeWalk %i , walk %i  qt %i fTimeDelayCFD[ipmt] %i timeEq %i \n ",
+  //    ipmt, time,timeWalk, walk, qt,fTimeDelayCFD[ipmt], timeEq );
+  //   AliDebug(10,Form(" ipmt %i time before %i timeWalk %i , walk %i  qt %i timeEq %i \n ",
+  //   ipmt, time,timeWalk, walk, qt, timeEq ));
+  
+   return timeEq;
 }