PHOS/AliPHOSCPVGeometry.cxx

   1 /**************************************************************************
   2  * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
   3  *                                                                        *
   4  * Author: The ALICE Off-line Project.                                    *
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  15
  16 /* $Id$ */
  17
  18 //_________________________________________________________________________
  19 // Geometry class  for PHOS : CPV (Charged particle veto, IHEP version)
  20 // Its data members provide geometry parametrization of CPV
  21 // which can be changed in the constructor only.
  22 // Author: Yuri Kharlov (IHEP, Protvino)
  23 // 15 September 2000
  24 //
  25 // --- ROOT system ---
  26
  27 // --- Standard library ---
  28
  29 // --- AliRoot header files ---
  30
  31 #include "AliPHOSCPVGeometry.h"
  32
  33 ClassImp(AliPHOSCPVGeometry)
  34
  35 //____________________________________________________________________________
  36 AliPHOSCPVGeometry::AliPHOSCPVGeometry()
  37   : fNumberOfCPVLayers(1),
  38     fNumberOfCPVPadsPhi(128),
  39     fNumberOfCPVPadsZ(56),
  40     fCPVPadSizePhi(1.13),
  41     fCPVPadSizeZ(2.26),
  42     fNumberOfCPVChipsPhi(8),
  43     fNumberOfCPVChipsZ(8),
  44     fCPVGasThickness(1.3),
  45     fCPVTextoliteThickness(0.1),
  46     fCPVCuNiFoilThickness(56e-04)
  47 {
  48
  49   // Initializes the CPV parameters
  50   fCPVFrameSize[0]       = 2.5;
  51   fCPVFrameSize[1]       = 5.1;
  52   fCPVFrameSize[2]       = 2.5;
  53   fGassiplexChipSize[0]  = 4.2;
  54   fGassiplexChipSize[1]  = 0.1;
  55   fGassiplexChipSize[2]  = 6.0;
  56   fFTPosition[0]         = 0.7;
  57   fFTPosition[1]         = 2.2;
  58   fFTPosition[2]         = 3.6;
  59   fFTPosition[3]         = 5.1;
  60
  61   fCPVActiveSize[0]      = fNumberOfCPVPadsPhi * fCPVPadSizePhi;
  62   fCPVActiveSize[1]      = fNumberOfCPVPadsZ   * fCPVPadSizeZ;
  63   fCPVBoxSize[0]         = fCPVActiveSize[0] + 2 * fCPVFrameSize[0];
  64   fCPVBoxSize[1]         = fCPVFrameSize[1] * fNumberOfCPVLayers + 0.1;
  65   fCPVBoxSize[2]         = fCPVActiveSize[1] + 2 * fCPVFrameSize[2];
  66
  67 }
  68 //____________________________________________________________________________