MUON/AliMUONChamberTrigger.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 #include "AliMUONChamberTrigger.h"
  19 #include "AliMUONResponseTrigger.h"
  20 #include "AliMUONHit.h"
  21 #include "AliMUON.h"
  22 #include "AliMUONSegmentation.h"
  23 #include "AliMUONGeometrySegmentation.h"
  24 #include "AliMUONGeometryTransformer.h"
  25 #include "AliLog.h"
  26
  27 ClassImp(AliMUONChamberTrigger)
  28
  29 //-------------------------------------------
  30
  31 AliMUONChamberTrigger::AliMUONChamberTrigger()
  32   : AliMUONChamber(),
  33     fkGeomTransformer(0)
  34 {
  35 // Default constructor
  36 }
  37
  38
  39 AliMUONChamberTrigger::AliMUONChamberTrigger(Int_t id,
  40                               const AliMUONGeometryTransformer* kGeometryTransformer)
  41   : AliMUONChamber(id),
  42     fkGeomTransformer(kGeometryTransformer)
  43 {
  44 // Constructor using chamber id
  45 }
  46
  47 //-------------------------------------------
  48 void AliMUONChamberTrigger::DisIntegration(AliMUONHit* hit,
  49                                            Int_t& nnew,
  50                                            Float_t newclust[6][500])
  51 {
  52 //
  53 //  Generates pad hits (simulated cluster)
  54 //  using the segmentation and the response model
  55
  56
  57   Float_t   tof = hit->Age();
  58   Float_t  xhit = hit->X();
  59   Float_t  yhit = hit->Y();
  60   Float_t  zhit = hit->Z();
  61   Int_t      id = hit->DetElemId();
  62
  63   Int_t twentyNano;
  64   if (tof<75*TMath::Power(10,-9)) {
  65     twentyNano=1;
  66   } else {
  67     twentyNano=100;
  68   }
  69
  70   Float_t qp;
  71   nnew=0;
  72   for (Int_t i = 1; i <= 2; i++) {
  73
  74     AliMUONGeometrySegmentation* segmentation=
  75       fMUON->GetSegmentation()->GetModuleSegmentation(fId, i-1);
  76
  77
  78 // Find the module & strip Id. which has fired
  79     Int_t ix(-1);
  80     Int_t iy(-1);
  81     segmentation->GetPadI(id,xhit,yhit,0,ix,iy);
  82 // treatment of GEANT hits w/o corresponding strip (due to the fact that
  83 // geometry & segmentation are computed in a very slightly different way)
  84     if ( ix<0 || iy<0 )
  85     {
  86       Float_t lx,ly,lz;
  87       fkGeomTransformer->Global2Local(id,xhit,yhit,0,lx,ly,lz);
  88       AliWarning(Form("AliMUONChamberTrigger hit w/o strip %i-%d %e %e "
  89                       "local %e %e %e ix,iy=%d,%d\n",id,i-1,xhit,yhit,lx,ly,lz,ix,iy));
  90     } else
  91     {
  92       segmentation->SetPad(id,ix,iy);
  93       if (xhit<0) ix = -ix;
  94       //    printf(" fId id fnsec xhit yhit zhit ix iy %i %i %i %f %f %f %i %i \n",fId,i,id,xhit,yhit,zhit,ix,iy);
  95       //     if (ix < 0 || ix > 10000) return;
  96       //     if (iy < 0 || iy > 10000) return;
  97
  98       // --- store signal information for this strip
  99       newclust[0][nnew]=1.;                       // total charge
 100       newclust[1][nnew]=ix;                       // ix-position of pad
 101       newclust[2][nnew]=iy;                       // iy-position of pad
 102       newclust[3][nnew]=twentyNano;               // time of flight
 103       newclust[4][nnew]=segmentation->ISector();  // sector id
 104       newclust[5][nnew]=(Float_t) i;              // counter
 105       nnew++;
 106
 107       // cluster-size if AliMUONResponseTriggerV1, nothing if AliMUONResponseTrigger
 108       if (((AliMUONResponseTrigger*) fResponse)->SetGenerCluster()) {
 109
 110             // set hits
 111             segmentation->SetHit(id,xhit,yhit,zhit);
 112             // get the list of nearest neighbours
 113             Int_t nList, xList[10], yList[10];
 114             segmentation->Neighbours(id,ix,iy,&nList,xList,yList);
 115
 116             qp = 0;
 117             for (Int_t j=0; j<nList; j++){       // loop over neighbours
 118                 if (xList[j]!=0) {                 // existing neighbour
 119                     if (j==0||j==5||qp!=0) {         // built-up cluster-size
 120
 121                         // neighbour real coordinates (just for checks here)
 122                         Float_t x,y,z;
 123                         segmentation->GetPadC(id,xList[j],yList[j],x,y,z);
 124                         // set pad (fx fy & fix fiy are the current pad coord. & Id.)
 125                         segmentation->SetPad(id,xList[j],yList[j]);
 126                         // get the chamber (i.e. current strip) response
 127                         qp=fResponse->IntXY(id,segmentation);
 128
 129                         if (qp > 0.5) {
 130                             // --- store signal information for neighbours
 131                             newclust[0][nnew]=qp;                      // total charge
 132                             newclust[1][nnew]=segmentation->Ix();      // ix-pos. of pad
 133                             newclust[2][nnew]=segmentation->Iy();      // iy-pos. of pad
 134                             newclust[3][nnew]=twentyNano;              // time of flight
 135                             newclust[4][nnew]=segmentation->ISector(); // sector id
 136                             newclust[5][nnew]=(Float_t) i;             // counter
 137                             nnew++;
 138                         } // qp > 0.5
 139                     } // built-up cluster-size
 140                 } // existing neighbour
 141             } // loop over neighbours
 142         } // endif hit w/o strip
 143     } // loop over planes
 144   } // if AliMUONResponseTriggerV1
 145 }
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