ITS/AliITSMapSDD.cxx

   1 /**************************************************************************
   2  * Copyright(c) 2007-2009, 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 // Implementation of the base class for SDD map corrections      //
  21 // Origin: F.Prino, Torino, prino@to.infn.it                     //
  22 //                                                               //
  23 ///////////////////////////////////////////////////////////////////
  24
  25 #include "TH1F.h"
  26 #include "TH2F.h"
  27 #include "AliITSMapSDD.h"
  28
  29 const Int_t AliITSMapSDD::fgkNAnodePtsDefault = 1;
  30 const Int_t AliITSMapSDD::fgkNDriftPtsDefault = 72;
  31
  32 ClassImp(AliITSMapSDD)
  33 //______________________________________________________________________
  34 AliITSMapSDD::AliITSMapSDD():
  35 TNamed("defaultmap",""),
  36 fNAnodePts(fgkNAnodePtsDefault),
  37 fNDriftPts(fgkNDriftPtsDefault)
  38 {
  39   // default constructor
  40 }
  41 //______________________________________________________________________
  42 AliITSMapSDD::AliITSMapSDD(Char_t *mapname):
  43 TNamed(mapname,""),
  44 fNAnodePts(fgkNAnodePtsDefault),
  45 fNDriftPts(fgkNDriftPtsDefault)
  46 {
  47   // standard constructor
  48 }
  49 //______________________________________________________________________
  50 Float_t AliITSMapSDD::GetCorrection(Float_t z, Float_t x, AliITSsegmentationSDD *seg){
  51   // returns correction in cm starting from local coordinates on the module
  52   const Double_t kMicronTocm = 1.0e-4;
  53   Int_t nAnodes=seg->Npz();
  54   Int_t nAnodesHybrid=seg->NpzHalf();
  55   Int_t bina =(Int_t) seg->GetAnodeFromLocal(x,z);
  56   if(bina>nAnodes)  AliError("Wrong anode anumber!");
  57   if(bina>=nAnodesHybrid) bina-=nAnodesHybrid;
  58   Float_t stept = seg->Dx()*kMicronTocm/(Float_t)fNDriftPts;
  59   Int_t bint = TMath::Abs((Int_t)(x/stept));
  60   if(bint==fNDriftPts) bint-=1;
  61   if(bint>=fNDriftPts) AliError("Wrong bin number along drift direction!");
  62   return kMicronTocm*GetCellContent(bina,bint);
  63 }
  64 //______________________________________________________________________
  65 TH2F* AliITSMapSDD::GetMapHisto() const{
  66   // Returns a TH2F histogram with map of residuals
  67   Char_t hname[50];
  68   sprintf(hname,"h%s",GetName());
  69   TH2F* hmap=new TH2F(hname,"",fNAnodePts,-0.5,255.5,fNDriftPts,0.,35.);
  70   for(Int_t iAn=0;iAn<fNAnodePts; iAn++){
  71     for(Int_t iDr=0;iDr<fNDriftPts; iDr++){
  72       hmap->SetBinContent(iAn+1,iDr+1,GetCellContent(iAn,iDr));
  73     }
  74   }
  75   return hmap;
  76 }
  77 //______________________________________________________________________
  78 TH1F* AliITSMapSDD::GetResidualDistr(Float_t dmin, Float_t dmax) const{
  79   // Returns a TH1F histogram with distribution of residual
  80   Char_t hname[50];
  81   sprintf(hname,"hd%s",GetName());
  82   TH1F* hd=new TH1F(hname,"",100,dmin,dmax);
  83   for(Int_t iAn=0;iAn<fNAnodePts; iAn++){
  84     for(Int_t iDr=0;iDr<fNDriftPts; iDr++){
  85       hd->Fill(GetCellContent(iAn,iDr));
  86     }
  87   }
  88   return hd;
  89 }