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 <TProfile.h>
  32
  33 ClassImp(AliT0CalibTimeEq)
  34
  35 //________________________________________________________________
  36   AliT0CalibTimeEq::AliT0CalibTimeEq():TNamed()
  37 {
  38   //
  39 }
  40
  41 //________________________________________________________________
  42 AliT0CalibTimeEq::AliT0CalibTimeEq(const char* name):TNamed()
  43 {
  44   //constructor
  45
  46   TString namst = "Calib_";
  47   namst += name;
  48   SetName(namst.Data());
  49   SetTitle(namst.Data());
  50 }
  51
  52 //________________________________________________________________
  53 AliT0CalibTimeEq::AliT0CalibTimeEq(const AliT0CalibTimeEq& calibda):TNamed(calibda)
  54 {
  55 // copy constructor
  56   SetName(calibda.GetName());
  57   SetTitle(calibda.GetName());
  58
  59
  60 }
  61
  62 //________________________________________________________________
  63 AliT0CalibTimeEq &AliT0CalibTimeEq::operator =(const AliT0CalibTimeEq& calibda)
  64 {
  65 // assignment operator
  66   SetName(calibda.GetName());
  67   SetTitle(calibda.GetName());
  68
  69   return *this;
  70 }
  71
  72 //________________________________________________________________
  73 AliT0CalibTimeEq::~AliT0CalibTimeEq()
  74 {
  75   //
  76   // destrictor
  77 }
  78 //________________________________________________________________
  79 void AliT0CalibTimeEq::Reset()
  80 {
  81   //reset values
  82
  83   memset(fCFDvalue,0,120*sizeof(Float_t));
  84   memset(fTimeEq,1,24*sizeof(Float_t));
  85 }
  86
  87
  88 //________________________________________________________________
  89 void  AliT0CalibTimeEq::Print(Option_t*) const
  90 {
  91   // print time values
  92
  93   printf("\n    ----    PM Arrays       ----\n\n");
  94   printf(" Time delay CFD \n");
  95   for (Int_t i=0; i<24; i++) printf(" CFD  %f ",fTimeEq[i]);
  96 }
  97
  98
  99 //________________________________________________________________
 100 void AliT0CalibTimeEq::ComputeOnlineParams(char* name1, Int_t npeaks, Double_t sigma, const char* filePhys)
 101 {
 102   // compute online equalized time
 103
 104   TFile *gFile = TFile::Open(filePhys);
 105   Bool_t down=false;
 106   Int_t index[20];
 107   Char_t buf1[15];
 108   Char_t temp[10];
 109   Float_t p[24][3]={0.,0.,0.};
 110   for (Int_t i=0; i<24; i++)
 111   {
 112     sprintf(buf1,name1);
 113     sprintf(temp,"%i",i+1);
 114     strcat (buf1,temp);
 115     //strcat (buf1,name2);
 116     TH1F *cfd = (TH1F*) gFile->Get(buf1);
 117     printf(" i = %d buf1 = %s\n", i, buf1);
 118     TSpectrum *s = new TSpectrum(2*npeaks,1.);
 119     printf(" buf1 = %s cfd = %x\n", buf1, cfd);
 120     Int_t nfound = s->Search(cfd,sigma,"goff",0.2);
 121     printf(" nfound = %d\n", nfound);
 122     if(nfound!=0)
 123     {
 124       Float_t *xpeak = s->GetPositionX();
 125       TMath::Sort(nfound, xpeak, index,down);
 126       Float_t xp = xpeak[index[0]];
 127       Float_t hmax = xp+3*sigma;
 128       Float_t hmin = xp-3*sigma;
 129       cfd->GetXaxis()->SetRange((Int_t)hmin-20,(Int_t)hmax+20);
 130       TF1 *g1 = new TF1("g1", "gaus", hmin, hmax);
 131       cfd->Fit("g1","IRQN");
 132       for(Int_t j =0; j<3; j++)
 133       {
 134         p[i][j] = g1->GetParameter(j);
 135         SetCFDvalue(i, j, p[i][j]);
 136       }
 137
 138       SetCFDvalue(i, 3, hmin);
 139       SetCFDvalue(i, 4, hmax);
 140
 141       if (i<12)
 142       {
 143         SetTimeEq(i,(p[i][2]-p[0][2]));
 144       }
 145       else
 146       {
 147         SetTimeEq(i,(p[i][2]-p[12][2]));
 148       }
 149     }
 150   }
 151
 152    gFile->Close();
 153    delete gFile;
 154
 155    for(int i=0;i<5;i++)
 156      {
 157       for(int j=0;j<24;j++)
 158         {
 159                 printf("fCFDvalue[%d][%d]=%f\n",j,i,fCFDvalue[j][i]);
 160         }
 161      }
 162    printf("\n\n");
 163    for(int j=0;j<24;j++)
 164    {
 165                 printf("fTimeEq[%d]=%f\n",j,fTimeEq[j]);
 166    }
 167 }
 168
 169