T0/AliT0CalibTimeEq.cxx

   1 /**************************************************************************
   2  * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
   3  *                                                                        *
   4  * Author: The ALICE Off-line Project.                                    *
   5  * Contributors are mentioned in the code where appropriate.              *
   6  *                                                                        *
   7  * Permission to use, copy, modify and distribute this software and its   *
   8  * documentation strictly for non-commercial purposes is hereby granted   *
   9  * without fee, provided that the above copyright notice appears in all   *
  10  * copies and that both the copyright notice and this permission notice   *
  11  * appear in the supporting documentation. The authors make no claims     *
  12  * about the suitability of this software for any purpose. It is          *
  13  * provided "as is" without express or implied warranty.                  *
  14  **************************************************************************/
  15
  16 /* $Id$ */
  17
  18 ///////////////////////////////////////////////////////////////////////////////
  19 //                                                                           //
  20 // class for T0 calibration                       TM-AC-AM_6-02-2006
  21 // equalize time shift for each time CFD channel
  22 //                                                                           //
  23 ///////////////////////////////////////////////////////////////////////////////
  24
  25 #include "AliT0CalibTimeEq.h"
  26
  27 #include <TFile.h>
  28 #include <TMath.h>
  29 #include <TF1.h>
  30 #include <TSpectrum.h>
  31 #include <TVirtualFitter.h>
  32 #include <TProfile.h>
  33
  34 ClassImp(AliT0CalibTimeEq)
  35
  36 //________________________________________________________________
  37   AliT0CalibTimeEq::AliT0CalibTimeEq():TNamed()
  38 {
  39   //
  40 }
  41
  42 //________________________________________________________________
  43 AliT0CalibTimeEq::AliT0CalibTimeEq(const char* name):TNamed()
  44 {
  45   //constructor
  46
  47   TString namst = "Calib_";
  48   namst += name;
  49   SetName(namst.Data());
  50   SetTitle(namst.Data());
  51 }
  52
  53 //________________________________________________________________
  54 AliT0CalibTimeEq::AliT0CalibTimeEq(const AliT0CalibTimeEq& calibda):TNamed(calibda)
  55 {
  56 // copy constructor
  57   SetName(calibda.GetName());
  58   SetTitle(calibda.GetName());
  59
  60
  61 }
  62
  63 //________________________________________________________________
  64 AliT0CalibTimeEq &AliT0CalibTimeEq::operator =(const AliT0CalibTimeEq& calibda)
  65 {
  66 // assignment operator
  67   SetName(calibda.GetName());
  68   SetTitle(calibda.GetName());
  69
  70   return *this;
  71 }
  72
  73 //________________________________________________________________
  74 AliT0CalibTimeEq::~AliT0CalibTimeEq()
  75 {
  76   //
  77   // destrictor
  78 }
  79 //________________________________________________________________
  80 void AliT0CalibTimeEq::Reset()
  81 {
  82   //reset values
  83
  84   memset(fCFDvalue,0,120*sizeof(Float_t));
  85   memset(fTimeEq,1,24*sizeof(Float_t));
  86 }
  87
  88
  89 //________________________________________________________________
  90 void  AliT0CalibTimeEq::Print(Option_t*) const
  91 {
  92   // print time values
  93
  94   printf("\n    ----    PM Arrays       ----\n\n");
  95   printf(" Time delay CFD \n");
  96   for (Int_t i=0; i<24; i++) printf(" CFD  %f ",fTimeEq[i]);
  97 }
  98
  99
 100 //________________________________________________________________
 101 void AliT0CalibTimeEq::ComputeOnlineParams(char* name1, Int_t npeaks, Double_t sigma, const char* filePhys)
 102 {
 103   // compute online equalized time
 104
 105   TFile *gFile = TFile::Open(filePhys);
 106   Bool_t down=false;
 107   Int_t index[20];
 108   Char_t buf1[15];
 109   Char_t temp[10];
 110   Float_t p[24][3]={0.,0.,0.};
 111   for (Int_t i=0; i<24; i++)
 112   {
 113     sprintf(buf1,name1);
 114     sprintf(temp,"%i",i+1);
 115     strcat (buf1,temp);
 116     //strcat (buf1,name2);
 117     TH1F *cfd = (TH1F*) gFile->Get(buf1);
 118     printf(" i = %d buf1 = %s\n", i, buf1);
 119     TSpectrum *s = new TSpectrum(2*npeaks,1.);
 120     printf(" buf1 = %s cfd = %x\n", buf1, cfd);
 121     Int_t nfound = s->Search(cfd,sigma,"goff",0.2);
 122     printf(" nfound = %d\n", nfound);
 123     if(nfound!=0)
 124     {
 125       Float_t *xpeak = s->GetPositionX();
 126       TMath::Sort(nfound, xpeak, index,down);
 127       Float_t xp = xpeak[index[0]];
 128       Float_t hmax = xp+3*sigma;
 129       Float_t hmin = xp-3*sigma;
 130       cfd->GetXaxis()->SetRange((Int_t)hmin-20,(Int_t)hmax+20);
 131       TF1 *g1 = new TF1("g1", "gaus", hmin, hmax);
 132       cfd->Fit("g1","IRQN");
 133       for(Int_t j =0; j<3; j++)
 134       {
 135         p[i][j] = g1->GetParameter(j);
 136         SetCFDvalue(i, j, p[i][j]);
 137       }
 138
 139       SetCFDvalue(i, 3, hmin);
 140       SetCFDvalue(i, 4, hmax);
 141
 142       if (i<12)
 143       {
 144         SetTimeEq(i,(p[i][2]-p[0][2]));
 145       }
 146       else
 147       {
 148         SetTimeEq(i,(p[i][2]-p[12][2]));
 149       }
 150     }
 151   }
 152
 153    gFile->Close();
 154    delete gFile;
 155
 156    for(int i=0;i<5;i++)
 157      {
 158       for(int j=0;j<24;j++)
 159         {
 160                 printf("fCFDvalue[%d][%d]=%f\n",j,i,fCFDvalue[j][i]);
 161         }
 162      }
 163    printf("\n\n");
 164    for(int j=0;j<24;j++)
 165    {
 166                 printf("fTimeEq[%d]=%f\n",j,fTimeEq[j]);
 167    }
 168 }
 169
 170