RICH/AliRICHv2.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 //  Manager and hits classes for set: RICH full version //
  21 //////////////////////////////////////////////////////////
  22
  23 #include "Riostream.h"
  24
  25 #include <TNode.h>
  26 #include <TParticle.h>
  27 #include <TRandom.h>
  28 #include <TTUBE.h>
  29 #include <TVirtualMC.h>
  30
  31 #include "AliConst.h"
  32 #include "AliPDG.h"
  33 #include "AliRICHHit.h"
  34 #include "AliRICHv2.h"
  35 #include "AliRun.h"
  36
  37 ClassImp(AliRICHv2)
  38
  39 //___________________________________________
  40 AliRICHv2::AliRICHv2()
  41 {
  42
  43 // Default constructor fo AliRICHvv2 (full version)
  44
  45     //fChambers = 0;
  46 }
  47
  48 //___________________________________________
  49 AliRICHv2::AliRICHv2(const char *name, const char *title)
  50     : AliRICH(name,title)
  51 {
  52
  53 // Full version of RICH with hits and diagnostics, CONFIURABLE
  54
  55     fCkovNumber=0;
  56     fFreonProd=0;
  57
  58     fChambers = new TObjArray(kNCH);
  59     for (Int_t i=0; i<kNCH; i++) {
  60
  61         (*fChambers)[i] = new AliRICHChamber();
  62
  63     }
  64 }
  65
  66 void AliRICHv2::Init()
  67 {
  68
  69   if(fDebug) {
  70     printf("%s: *********************************** RICH_INIT ***********************************\n",ClassName());
  71     printf("%s: *                                                                               *\n",ClassName());
  72     printf("%s: *                    AliRICHv2 Configurable version started                     *\n",ClassName());
  73     printf("%s: *                                                                               *\n",ClassName());
  74   }
  75
  76
  77   AliSegmentation*  segmentation;
  78   AliRICHGeometry*  geometry;
  79   AliRICHResponse*  response;
  80
  81
  82     //
  83     // Initialize Tracking Chambers
  84     //
  85     for (Int_t i=0; i<kNCH; i++) {
  86         //printf ("i:%d",i);
  87         ( (AliRICHChamber*) (*fChambers)[i])->Init(i);
  88     }
  89
  90     //
  91     // Set the chamber (sensitive region) GEANT identifier
  92
  93     ((AliRICHChamber*)(*fChambers)[0])->SetGid(1);
  94     ((AliRICHChamber*)(*fChambers)[1])->SetGid(2);
  95     ((AliRICHChamber*)(*fChambers)[2])->SetGid(3);
  96     ((AliRICHChamber*)(*fChambers)[3])->SetGid(4);
  97     ((AliRICHChamber*)(*fChambers)[4])->SetGid(5);
  98     ((AliRICHChamber*)(*fChambers)[5])->SetGid(6);
  99     ((AliRICHChamber*)(*fChambers)[6])->SetGid(7);
 100
 101     segmentation=Chamber(0).GetSegmentationModel(0);
 102     geometry=Chamber(0).GetGeometryModel();
 103     response=Chamber(0).GetResponseModel();
 104
 105     Float_t offset       = 490 + 1.276 - geometry->GetGapThickness()/2;        //distance from center of mother volume to methane
 106     Float_t deltaphi     = 19.5;                                               //phi angle between center of chambers - z direction
 107     Float_t deltatheta   = 20;                                                 //theta angle between center of chambers - x direction
 108     Float_t cosphi       = TMath::Cos(deltaphi*TMath::Pi()/180);
 109     Float_t sinphi       = TMath::Sin(deltaphi*TMath::Pi()/180);
 110     Float_t costheta     = TMath::Cos(deltatheta*TMath::Pi()/180);
 111     Float_t sintheta     = TMath::Sin(deltatheta*TMath::Pi()/180);
 112
 113     Float_t pos1[3]={0.                , offset*cosphi         , offset*sinphi};
 114     Float_t pos2[3]={offset*sintheta   , offset*costheta       , 0. };
 115     Float_t pos3[3]={0.                , offset                , 0.};
 116     Float_t pos4[3]={-offset*sintheta  , offset*costheta       , 0.};
 117     Float_t pos5[3]={offset*sinphi     , offset*costheta*cosphi, -offset*sinphi};
 118     Float_t pos6[3]={0.                , offset*cosphi         , -offset*sinphi};
 119     Float_t pos7[3]={ -offset*sinphi   , offset*costheta*cosphi, -offset*sinphi};
 120
 121     Chamber(0).SetChamberTransform(pos1[0],pos1[1],pos1[2],new TRotMatrix("rot993","rot993",90., 0.               , 90. - deltaphi, 90.             , deltaphi, -90.           ));
 122     Chamber(1).SetChamberTransform(pos2[0],pos2[1],pos2[2],new TRotMatrix("rot994","rot994",90., -deltatheta      , 90.           , 90.- deltatheta , 0.      , 0.             ));
 123     Chamber(2).SetChamberTransform(pos3[0],pos3[1],pos3[2],new TRotMatrix("rot995","rot995",90., 0.               , 90.           , 90.             , 0.      , 0.             ));
 124     Chamber(3).SetChamberTransform(pos4[0],pos4[1],pos4[2],new TRotMatrix("rot996","rot996",90.,  deltatheta      , 90.           , 90 + deltatheta , 0.      , 0.             ));
 125     Chamber(4).SetChamberTransform(pos5[0],pos5[1],pos5[2],new TRotMatrix("rot997","rot997",90., 360. - deltatheta, 108.2         , 90.- deltatheta ,18.2     , 90 - deltatheta));
 126     Chamber(5).SetChamberTransform(pos6[0],pos6[1],pos6[2],new TRotMatrix("rot998","rot998",90., 0.               , 90 + deltaphi , 90.             , deltaphi, 90.            ));
 127     Chamber(6).SetChamberTransform(pos7[0],pos7[1],pos7[2],new TRotMatrix("rot999","rot999",90., deltatheta       , 108.2         , 90.+ deltatheta ,18.2     , 90 + deltatheta));
 128
 129     if(fDebug) {
 130       printf("%s: *                            Pads            : %3dx%3d                          *\n",
 131              ClassName(),segmentation->Npx(),segmentation->Npy());
 132       printf("%s: *                            Pad size        : %5.2f x%5.2f mm2                 *\n",
 133              ClassName(),segmentation->Dpx(),segmentation->Dpy());
 134       printf("%s: *                            Gap Thickness   : %5.1f cm                         *\n",
 135              ClassName(),geometry->GetGapThickness());
 136       printf("%s: *                            Radiator Width  : %5.1f cm                         *\n",
 137              ClassName(),geometry->GetQuartzWidth());
 138       printf("%s: *                            Radiator Length : %5.1f cm                         *\n",
 139              ClassName(),geometry->GetQuartzLength());
 140       printf("%s: *                            Freon Thickness : %5.1f cm                         *\n",
 141              ClassName(),geometry->GetFreonThickness());
 142       printf("%s: *                            Charge Slope    : %5.1f ADC                        *\n",
 143              ClassName(),response->ChargeSlope());
 144       printf("%s: *                            Feedback Prob.  : %5.2f %%                          *\n",
 145              ClassName(),response->AlphaFeedback()*100);
 146       printf("%s: *                            Debug Level     : %3d                              *\n",
 147              ClassName(),GetDebugLevel());
 148       printf("%s: *                                                                               *\n",
 149              ClassName());
 150       printf("%s: *********************************************************************************\n",
 151              ClassName());
 152     }
 153 }
 154