[u/mrichter/AliRoot.git] / STRUCT / AliSHIL.cxx

/**************************************************************************
 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 *                                                                        *
 * Author: The ALICE Off-line Project.                                    *
 * Contributors are mentioned in the code where appropriate.              *
 *                                                                        *
 * Permission to use, copy, modify and distribute this software and its   *
 * documentation strictly for non-commercial purposes is hereby granted   *
 * without fee, provided that the above copyright notice appears in all   *
 * copies and that both the copyright notice and this permission notice   *
 * appear in the supporting documentation. The authors make no claims     *
 * about the suitability of this software for any purpose. It is          *
 * provided "as is" without express or implied warranty.                  *
 **************************************************************************/

/*
$Log$
*/

///////////////////////////////////////////////////////////////////////////////
//                                                                           //
//  Muon Shield Class                                                        //
//  This class contains a description of the muon shield                     //
//                                                                           //
//Begin_Html
/*
<img src="picts/AliSHILClass.gif">
*/
//End_Html
//                                                                           //
//                                                                           //
///////////////////////////////////////////////////////////////////////////////

#include "AliSHIL.h"
#include "AliRun.h"
#include "AliConst.h"

ClassImp(AliSHIL)
 
//_____________________________________________________________________________
AliSHIL::AliSHIL()
{
  //
  // Default constructor for muon shield
  //
}
 
//_____________________________________________________________________________
AliSHIL::AliSHIL(const char *name, const char *title)
  : AliModule(name,title)
{
  //
  // Standard constructor for muon shield
  //
  SetMarkerColor(7);
  SetMarkerStyle(2);
  SetMarkerSize(0.4);
}
 
//_____________________________________________________________________________
void AliSHIL::CreateGeometry()
{
  //
  // Build muon shield geometry
  //
  // Origin N.Van Eijndhoven
  //
  //Begin_Html
  /*
    <img src="picts/AliSHIL.gif">
  */
  //End_Html
  //Begin_Html
  /*
    <img src="picts/AliSHILTree.gif">
  */
  //End_Html

  Float_t r_pb, cpar[5], parm[12], tpar[3], zmag_out,
    abs_c, abs_l, r_abs, pcpar[12];
  Float_t dr, dz, 
    zs, theta_open;
  Float_t cz1, cz2;
  Float_t dzcoch1, dzcoch2, acc_min, dzs, zcone_e, zmag_in,
    z_close, z_l3, shl1, shl4;
    
  Int_t *idtmed = fIdtmed->GetArray()-1699;
  
  //abs_d   = 90.;  // DEFINES DRIFT LENGTH 
  //z_nose  = 102.;
  //z_cone  = 285.;
  //theta1  = 24.;  // 1. angle defining the front absorber 
  //theta2  = 5.;   // 2. angle defining the front absorbe 
  //acc_max = 9.;   // ANGLE POLAIRE MAXIMUM 
  acc_min = 2.;   // ANGLE POLAIRE MINIMUM DE DETECTION 
  abs_l   = 503.;
  //d_steel = 1.;   // THICKNESS OF STEEL SUPPORT 
  //d_poly  = 7.5;
  //d_pb    = 2.5;
  //abs_cc  = 315.; // DEFINES LENGTH OF CARBON 
  abs_c   = 358.;
  //abs_s   = 150.; // DEFINES W-SHIELD LENGTH 
  //abs_n   = 80.;  // START OF NOSE 
  r_abs   = 4.;
  r_pb    = .1;
  //epsilon = .01;
  //theta_r = 3.;
  //d_rear  = 35.;
  theta_open = .75;
  
  z_l3      = 700.;
  zmag_in   = 725.;
  zmag_out  = 1225.;
  //zfil_in   = 1471.;
  //zfil_out  = 1591.;
  //zcon_in   = 1900.;
  //zcon_out  = 2e3;
  zcone_e   = 859.0875;
  //spec_l    = 1800.;
  //zplug_in  = 1780.;
  //zplug_out = 1900.;
  
  //     Chamber position 
  //      CZ1=515.5 
  cz1 = 511.;
  cz2 = 686.;
  //cz3 = 971.;
  //cz4 = 1245.;
  //cz5 = 1445.;
  //cz6 = 1610.;
  //cz7 = 1710.;
  
  
  //  the mother of all shields 
  
  parm[0] = 0.;
  parm[1] = 360.;
  parm[2] = 3.;
  parm[3] = abs_l;
  parm[4] = 0.;
  parm[5] = abs_l * TMath::Tan(acc_min * kDegrad);
  parm[6] = zcone_e;
  parm[7] = 0.;
  parm[8] = 30.;
  parm[9] = 1900.;
  parm[10] = 0.;
  parm[11] = 30.;
  gMC->Gsvolu("YMOT", "PCON", idtmed[1715], parm, 12);
  
  //       beam shield ouside absorber inside l3 
  
  shl1    = (z_l3 - abs_l) / 2.;
  cpar[0] = shl1;
  cpar[1] = 0.;
  cpar[2] = abs_l * TMath::Tan(acc_min * kDegrad);
  cpar[3] = 0.;
  cpar[4] = z_l3 * TMath::Tan(acc_min * kDegrad);
  gMC->Gsvolu("YMS1", "CONE", idtmed[1759], cpar, 5);
  
  //       OUTSIDE STEEL TUBE 
  // Pb/W 
  cpar[1] = cpar[2] - 4.;
  cpar[3] = cpar[4] - 4.;
  gMC->Gsvolu("YSH1", "CONE", idtmed[1718], cpar, 5);
  gMC->Gspos("YSH1", 1, "YMS1", 0., 0., 0., 0, "ONLY");
  
  //      COCHES FOR CHAMBERS 
  dzcoch1 = cz1 + 4. - (abs_l + shl1);
  dzcoch2 = cz2 + 4. - (abs_l + shl1);
  
  //       AIR 
  cpar[0] = 7.5;
  dr      = cpar[0] * 2. * TMath::Tan(acc_min * kDegrad);
  cpar[2] = (cz1 + 4. - cpar[0]) * TMath::Tan(acc_min * kDegrad);
  cpar[1] = cpar[2] - 3.;
  cpar[3] = cpar[1] + dr;
  cpar[4] = cpar[2] + dr;
  gMC->Gsvolu("YAC1", "CONE", idtmed[1714], cpar, 5);
  gMC->Gspos("YAC1", 1, "YMS1", 0., 0., dzcoch1, 0, "ONLY");
  cpar[2] = (cz2 + 4. - cpar[0]) * TMath::Tan(acc_min * kDegrad);
  cpar[1] = cpar[2] - 3.;
  cpar[3] = cpar[1] + dr;
  cpar[4] = cpar[2] + dr;
  gMC->Gsvolu("YAC2", "CONE", idtmed[1714], cpar, 5);
  gMC->Gspos("YAC2", 1, "YMS1", 0., 0., dzcoch2, 0, "ONLY");
  
  //       STEEL 
  cpar[0] = (cz1 + 4. + 20. - abs_l) / 2.;
  dr      = cpar[0] * 2. * TMath::Tan(acc_min * kDegrad);
  //      CPAR(3)=ABS_L*TAN(kDegrad*ACC_MIN)-3. 
  cpar[2] = abs_l * TMath::Tan(acc_min * kDegrad) - 4.;
  cpar[1] = cpar[2] - 3.;
  cpar[3] = cpar[1] + dr;
  cpar[4] = cpar[2] + dr;
  dzcoch1 = abs_l + cpar[0] - (abs_l + shl1);
  gMC->Gsvolu("YSC1", "CONE", idtmed[1718], cpar, 5);
  gMC->Gspos("YSC1", 1, "YMS1", 0., 0., dzcoch1, 0, "ONLY");
  
  cpar[0] = 16.;
  dr      = cpar[0] * 2. * TMath::Tan(acc_min * kDegrad);
  //      CPAR(3)=(CZ2+4.-CPAR(1))*TAN(kDegrad*ACC_MIN)-3. 
  cpar[2] = (cz2 + 4. - cpar[0]) * TMath::Tan(acc_min * kDegrad) - 4.;
  cpar[1] = cpar[2] - 3.;
  cpar[3] = cpar[1] + dr;
  cpar[4] = cpar[2] + dr;
  gMC->Gsvolu("YSC2", "CONE", idtmed[1718], cpar, 5);
  gMC->Gspos("YSC2", 1, "YMS1", -4., 0., dzcoch2, 0, "ONLY");
  
  //       ... beam pipe 
  cpar[0] = shl1;
  cpar[1] = 0.;
  cpar[2] = r_abs + (abs_l - abs_c) * TMath::Tan(theta_open * kDegrad);
  cpar[3] = 0.;
  cpar[4] = cpar[2] + shl1 * 2. * TMath::Tan(theta_open * kDegrad);
  gMC->Gsvolu("YMB1", "CONE", idtmed[1755], cpar, 5);
  
  cpar[0]  = shl1;
  cpar[2] += -.8;
  cpar[1]  = cpar[2] - .2;
  cpar[4] += -.8;
  cpar[3]  = cpar[4] - .2;
  gMC->Gsvolu("YBS1", "CONE", idtmed[1749], cpar, 5);
  gMC->Gspos("YBS1", 1, "YMB1", 0., 0., 0., 0, "ONLY");
  
  
  gMC->Gspos("YMB1", 1, "YMS1", 0., 0., 0., 0, "ONLY");
  dz = shl1 + abs_l;
  gMC->Gspos("YMS1", 1, "YMOT", 0., 0., dz, 0, "ONLY");
  
  //       BEAM SHIELD OUTSIDE L3 
  
  //     L3->DIPOLE 
  cpar[0] = (zmag_in - z_l3) / 2.;
  cpar[1] = 0.;
  cpar[2] = z_l3 * TMath::Tan(acc_min * kDegrad);
  cpar[3] = 0.;
  cpar[4] = zmag_in * TMath::Tan(acc_min * kDegrad);
  gMC->Gsvolu("YMS2", "CONE", idtmed[1759], cpar, 5);
  
  //       OUTSIDE STEEL TUBE 
  
  // Pb/W 
  cpar[1] = cpar[2] - 4.;
  cpar[3] = cpar[4] - 4.;
  gMC->Gsvolu("YSH2", "CONE", idtmed[1718], cpar, 5);
  gMC->Gspos("YSH2", 1, "YMS2", 0., 0., 0., 0, "ONLY");
  
  //       ... beam pipe 

  zs      = z_l3 - abs_c;
  cpar[1] = 0.;
  cpar[2] = r_abs + zs * TMath::Tan(theta_open * kDegrad);
  cpar[3] = 0.;
  cpar[4] = cpar[2] + cpar[0] * 2. * TMath::Tan(theta_open * kDegrad);
  gMC->Gsvolu("YMB2", "CONE", idtmed[1755], cpar, 5);
  
  cpar[2] += -.8;
  cpar[1]  = cpar[2] - .2;
  cpar[4] += -.8;
  cpar[3]  = cpar[4] - .2;
  gMC->Gsvolu("YBS2", "CONE", idtmed[1749], cpar, 5);
  gMC->Gspos("YBS2", 1, "YMB2", 0., 0., 0., 0, "ONLY");
  
  
  gMC->Gspos("YMB2", 1, "YMS2", 0., 0., 0., 0, "ONLY");
  dz = cpar[0] + z_l3;
  gMC->Gspos("YMS2", 1, "YMOT", 0., 0., dz, 0, "ONLY");
  pcpar[0] = 0.;
  pcpar[1] = 360.;
  pcpar[2] = 3.;
  pcpar[3] = 0.;
  pcpar[4] = 0.;
  pcpar[5] = zmag_in * TMath::Tan(acc_min * kDegrad);
  pcpar[6] = zcone_e - zmag_in;
  pcpar[7] = 0.;
  pcpar[8] = 30.;
  pcpar[9] = zmag_out - zmag_in;
  pcpar[10] = 0.;
  pcpar[11] = 30.;
  gMC->Gsvolu("YMS3", "PCON", idtmed[1759], pcpar, 12);
  
  //       OUTSIDE STEEL TUBE 
  
  // Pb/W 
  pcpar[4]  = pcpar[5] - 4.;
  pcpar[7]  = pcpar[8] - 4.;
  pcpar[10] = pcpar[11] - 4.;
  gMC->Gsvolu("YSH3", "PCON", idtmed[1718], pcpar, 12);
  gMC->Gspos("YSH3", 1, "YMS3", 0., 0., 0., 0, "MANY");
  
  //       ... beam pipe up to closing cone 
  
  zs      = zmag_in - abs_c;
  z_close = 804.;
  
  cpar[0] = (z_close - zmag_in) / 2.;
  cpar[1] = 0.;
  cpar[2] = r_abs + zs * TMath::Tan(theta_open * kDegrad);
  cpar[3] = 0.;
  cpar[4] = cpar[2] + cpar[0] * 2. * TMath::Tan(theta_open * kDegrad);
  gMC->Gsvolu("YMB3", "CONE", idtmed[1755], cpar, 5);
  
  cpar[2] += -.8;
  cpar[1]  = cpar[2] - .2;
  cpar[4] += -.8;
  cpar[3]  = cpar[4] - .2;
  gMC->Gsvolu("YBS3", "CONE", idtmed[1749], cpar, 5);
  gMC->Gspos("YBS3", 1, "YMB3", 0., 0., 0.,      0, "ONLY");
  gMC->Gspos("YMB3", 1, "YMS3", 0., 0., cpar[0], 0, "ONLY");
  
  //       .closing cone 
  
  dzs = cpar[0] * 2.;
  zs  = z_close - abs_c;
  
  cpar[0] = 25.;
  cpar[1] = 0.;
  cpar[2] = r_abs + zs * TMath::Tan(theta_open * kDegrad);
  cpar[3] = 0.;
  cpar[4] = r_abs;
  gMC->Gsvolu("YMB5", "CONE", idtmed[1755], cpar, 5);
  
  cpar[2] += -.8;
  cpar[1]  = cpar[2] - .2;
  cpar[4] += -.8;
  cpar[3]  = cpar[4] - .2;
  gMC->Gsvolu("YBS5", "CONE", idtmed[1749], cpar, 5);
  gMC->Gspos("YBS5", 1, "YMB5", 0., 0., 0., 0, "ONLY");
  
  dzs += cpar[0];
  gMC->Gspos("YMB5", 1, "YMS3", 0., 0., dzs, 0, "ONLY");
  dzs += cpar[0];
  
  //       OUTSIDE PB-TUBE 
  
  tpar[0] = 30. - r_pb - 4.;
  tpar[1] = 30. - r_pb;
  tpar[2] = (zmag_out - z_close - 50.) / 2.;
  dzs    += tpar[2];
  gMC->Gsvolu("YNW1", "TUBE", idtmed[1752], tpar, 3);
  gMC->Gspos("YNW1", 1, "YMS3", 0., 0., dzs, 0, "MANY");
  
  //       constant beam pipe up to end of magnet 
  
  tpar[0] = 0.;
  tpar[1] = r_abs;
  tpar[2] = (zmag_out - z_close - 50.) / 2.;
  gMC->Gsvolu("YMB6", "TUBE", idtmed[1755], tpar, 3);
  
  tpar[1] = r_abs - .8;
  tpar[0] = tpar[1] - .2;
  gMC->Gsvolu("YBS6", "TUBE", idtmed[1749], tpar, 3);
  gMC->Gspos("YBS6", 1, "YMB6", 0., 0., 0.,  0, "ONLY");
  gMC->Gspos("YMB6", 1, "YMS3", 0., 0., dzs, 0, "ONLY");
  
  dz = zmag_in;
  gMC->Gspos("YMS3", 1, "YMOT", 0., 0., dz,  0, "ONLY");
  
  //       DIPOLE-> 
  
  tpar[0] = 0.;
  tpar[1] = 30.;
  tpar[2] = (1900. - zmag_out) / 2.;
  shl4 = tpar[2];
  gMC->Gsvolu("YMS4", "TUBE", idtmed[1759], tpar, 3);
  //      CALL GSVOLU('YMS4','TUBE',IDTMED(1752),TPAR,3,IL3) ! W 
  
  //       OUTSIDE STEEL TUBE 
  
  // Pb/W 
  tpar[0] = tpar[1] - 4.;
  gMC->Gsvolu("YSH4", "TUBE", idtmed[1718], tpar, 3);
  gMC->Gspos("YSH4", 1, "YMS4", 0., 0., 0., 0, "MANY");
  
  //       OUTSIDE PB-TUBE 
  
  tpar[0] = 30. - r_pb - 4.;
  tpar[1] = 30. - r_pb;
  gMC->Gsvolu("YNW2", "TUBE", idtmed[1752], tpar, 3);
  gMC->Gspos("YNW2", 1, "YMS4", 0., 0., 0., 0, "MANY");
  
  //       ... beam pipe 
  
  tpar[0] = 0.;
  tpar[1] = r_abs;
  tpar[2] = shl4;
  gMC->Gsvolu("YMB4", "TUBE", idtmed[1755], tpar, 3);
  
  tpar[2] = shl4;
  tpar[1] = r_abs - .8;
  tpar[0] = tpar[1] - .2;
  gMC->Gsvolu("YBS4", "TUBE", idtmed[1749], tpar, 3);
  gMC->Gspos("YBS4", 1, "YMB4", 0., 0., 0., 0, "ONLY");
  
  
  dz = zmag_out + shl4;
  gMC->Gspos("YMB4", 1, "YMS4", 0., 0., 0., 0, "ONLY");
  gMC->Gspos("YMS4", 1, "YMOT", 0., 0., dz, 0, "ONLY");
  gMC->Gspos("YMOT", 1, "ALIC", 0., 0., 0., 0, "ONLY");
}

//_____________________________________________________________________________
void AliSHIL::CreateMaterials()
{
  //
  // Defines materials for the muon shield
  //
  // Origin N. Van Eijndhoven
  //
  
  Int_t   ISXFLD = gAlice->Field()->Integ();
  Float_t SXMGMX = gAlice->Field()->Max();
  
  Float_t asteel[4] = { 55.847,51.9961,58.6934,28.0855 };
  Float_t zsteel[4] = { 26.,24.,28.,14. };
  Float_t wsteel[4] = { .715,.18,.1,.005 };
  Float_t apbw[2]   = { 207.2,183.85 };
  Float_t zpbw[2]   = { 82.,74. };
  Float_t wpbw[2]   = { .5,.5 };
  
  Float_t epsil, stmin, tmaxfd, deemax, stemax;
  
  //     STEEL 
  
  
  //     LEAD/TUNGSTEN MIXTURE 
  
  
  // --- Define the various materials for GEANT --- 
  //     Aluminum 
  AliMaterial(9,  "ALUMINIUM$", 26.98, 13., 2.7, 8.9, 37.2);
  AliMaterial(29, "ALUMINIUM$", 26.98, 13., 2.7, 8.9, 37.2);
  AliMaterial(49, "ALUMINIUM$", 26.98, 13., 2.7, 8.9, 37.2);
  
  //     Iron 
  AliMaterial(10, "IRON$     ", 55.85, 26., 7.87, 1.76, 17.1);
  AliMaterial(30, "IRON$     ", 55.85, 26., 7.87, 1.76, 17.1);
  AliMaterial(50, "IRON$     ", 55.85, 26., 7.87, 1.76, 17.1);
  
  //     Tungsten 
  AliMaterial(12, "TUNGSTEN$ ", 183.85, 74., 19.3, .35, 10.3);
  AliMaterial(32, "TUNGSTEN$ ", 183.85, 74., 19.3, .35, 10.3);
  AliMaterial(52, "TUNGSTEN$ ", 183.85, 74., 19.3, .35, 10.3);
  
  //     Lead 
  AliMaterial(13, "LEAD$     ", 207.19, 82., 11.35, .56, 18.5);
  AliMaterial(33, "LEAD$     ", 207.19, 82., 11.35, .56, 18.5);
  AliMaterial(53, "LEAD$     ", 207.19, 82., 11.35, .56, 18.5);
  
  //     Air 
  AliMaterial(15, "AIR$      ", 14.61, 7.3, .001205, 30423.24, 67500);
  AliMaterial(35, "AIR$      ", 14.61, 7.3, .001205, 30423.24, 67500);
  AliMaterial(55, "AIR$      ", 14.61, 7.3, .001205, 30423.24, 67500);
  
  //     Vacuum 
  AliMaterial(16, "VACUUM$ ", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
  AliMaterial(36, "VACUUM$ ", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
  AliMaterial(56, "VACUUM$ ", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
  
  //     stainless Steel 
  AliMixture(19, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel);
  AliMixture(39, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel);
  AliMixture(59, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel);
  
  //     Lead/Tungsten 
  AliMixture(20, "LEAD/TUNGSTEN$", apbw, zpbw, 15.325, 2, wpbw);
  AliMixture(40, "LEAD/TUNGSTEN$", apbw, zpbw, 15.325, 2, wpbw);
  AliMixture(60, "LEAD/TUNGSTEN$", apbw, zpbw, 15.325, 2, wpbw);
  
  // **************** 
  //     Defines tracking media parameters. 
  //     Les valeurs sont commentees pour laisser le defaut 
  //     a GEANT (version 3-21, page CONS200), f.m. 
  epsil  = .001;  // Tracking precision, 
  stemax = -1.;   // Maximum displacement for multiple scat 
  tmaxfd = -20.;  // Maximum angle due to field deflection 
  deemax = -.3;   // Maximum fractional energy loss, DLS 
  stmin  = -.8;
  // *************** 
  
  //    Aluminum 
  AliMedium(9, "ALU_C0          ", 9, 0,  ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
  AliMedium(29, "ALU_C1          ", 29, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
  AliMedium(49, "ALU_C2          ", 49, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
  
  //    Iron 
  AliMedium(10, "FE_C0           ", 10, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
  AliMedium(30, "FE_C1           ", 30, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
  AliMedium(50, "FE_C2           ", 50, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
  
  //    Tungsten 
  AliMedium(12, "W_C0            ", 12, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
  AliMedium(32, "W_C1            ", 32, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
  AliMedium(52, "W_C2            ", 52, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
  
  //    Lead 
  AliMedium(13, "PB_C0           ", 13, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
  AliMedium(33, "PB_C1           ", 33, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
  AliMedium(53, "PB_C2           ", 53, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
  
  //    Air 
  AliMedium(15, "AIR_C0          ", 15, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
  AliMedium(35, "AIR_C1          ", 35, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
  AliMedium(55, "AIR_C2          ", 55, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
  
  //    Vacuum 
  AliMedium(16, "VA_C0           ", 16, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
  AliMedium(36, "VA_C1           ", 36, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
  AliMedium(56, "VA_C2           ", 56, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
  
  //    Steel 
  AliMedium(19, "ST_C0           ", 19, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
  AliMedium(39, "ST_C1           ", 39, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
  AliMedium(59, "ST_C3           ", 59, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
  
  //    Lead/Tungsten 
  AliMedium(20, "PB/W0           ", 20, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
  AliMedium(40, "PB/W1           ", 40, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
  AliMedium(60, "PB/W3           ", 60, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
}

//_____________________________________________________________________________
void AliSHIL::DrawModule () 
{
  //
  // Draw a shaded view of the muon shield
  //

  // Set everything unseen
  gMC->Gsatt("*", "seen", -1);
  // 
  // Set ALIC mother transparent
  gMC->Gsatt("ALIC","SEEN",0);
  //
  // Set the volumes visible
  gMC->Gsatt("YMOT","seen",1);
  gMC->Gsatt("YMS1","seen",1);
  gMC->Gsatt("YSH1","seen",1);
  gMC->Gsatt("YAC1","seen",1);
  gMC->Gsatt("YAC2","seen",1);
  gMC->Gsatt("YSC1","seen",1);
  gMC->Gsatt("YSC2","seen",1);
  gMC->Gsatt("YMB1","seen",1);
  gMC->Gsatt("YBS1","seen",1);
  gMC->Gsatt("YMS2","seen",1);
  gMC->Gsatt("YSH2","seen",1);
  gMC->Gsatt("YMB2","seen",1);
  gMC->Gsatt("YBS2","seen",1);
  gMC->Gsatt("YMS3","seen",1);
  gMC->Gsatt("YSH3","seen",1);
  gMC->Gsatt("YMB3","seen",1);
  gMC->Gsatt("YBS3","seen",1);
  gMC->Gsatt("YMB5","seen",1);
  gMC->Gsatt("YBS5","seen",1);
  gMC->Gsatt("YNW1","seen",1);
  gMC->Gsatt("YMB6","seen",1);
  gMC->Gsatt("YBS6","seen",1);
  gMC->Gsatt("YMS4","seen",1);
  gMC->Gsatt("YSH4","seen",1);
  gMC->Gsatt("YNW2","seen",1);
  gMC->Gsatt("YMB4","seen",1);
  gMC->Gsatt("YBS4","seen",1);
  //
  gMC->Gdopt("hide", "on");
  gMC->Gdopt("shad", "on");
  gMC->Gsatt("*", "fill", 7);
  gMC->SetClipBox(".");
  gMC->SetClipBox("*", 0, 3000, -3000, 3000, -6000, 6000);
  gMC->DefaultRange();
  gMC->Gdraw("alic", 30, 30, 0, 26.5, 18, .03, .03);
  gMC->Gdhead(1111, "Muon Shield");
  gMC->Gdman(16, 6, "MAN");
}

//_____________________________________________________________________________
void AliSHIL::Init()
{
  //
  // Initialise the muon shield after it has been built
  //
  Int_t i;
  //
  printf("\n");
  for(i=0;i<35;i++) printf("*");
  printf(" SHIL_INIT ");
  for(i=0;i<35;i++) printf("*");
  printf("\n");
  //
  // Here the ABSO initialisation code (if any!)
  for(i=0;i<80;i++) printf("*");
  printf("\n");
}
Commit	Line	Data
4c039060	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	/*
	17	$Log$
	18	*/
	19
fe4da5cc	20	///////////////////////////////////////////////////////////////////////////////
	21	// //
	22	// Muon Shield Class //
	23	// This class contains a description of the muon shield //
	24	// //
	25	//Begin_Html
	26	/*
1439f98e	27	<img src="picts/AliSHILClass.gif">
fe4da5cc	28	*/
	29	//End_Html
	30	// //
	31	// //
	32	///////////////////////////////////////////////////////////////////////////////
	33
	34	#include "AliSHIL.h"
fe4da5cc	35	#include "AliRun.h"
fe4da5cc	36	#include "AliConst.h"
	37
	38	ClassImp(AliSHIL)
	39
	40	//_____________________________________________________________________________
	41	AliSHIL::AliSHIL()
	42	{
	43	//
	44	// Default constructor for muon shield
	45	//
	46	}
	47
	48	//_____________________________________________________________________________
	49	AliSHIL::AliSHIL(const char name, const char title)
b8032157	50	: AliModule(name,title)
fe4da5cc	51	{
	52	//
	53	// Standard constructor for muon shield
	54	//
	55	SetMarkerColor(7);
	56	SetMarkerStyle(2);
	57	SetMarkerSize(0.4);
	58	}
	59
fe4da5cc	60	//_____________________________________________________________________________
	61	void AliSHIL::CreateGeometry()
	62	{
	63	//
	64	// Build muon shield geometry
	65	//
	66	// Origin N.Van Eijndhoven
	67	//
	68	//Begin_Html
	69	/*
1439f98e	70	<img src="picts/AliSHIL.gif">
fe4da5cc	71	*/
	72	//End_Html
	73	//Begin_Html
	74	/*
1439f98e	75	<img src="picts/AliSHILTree.gif">
fe4da5cc	76	*/
	77	//End_Html
	78
	79	Float_t r_pb, cpar[5], parm[12], tpar[3], zmag_out,
	80	abs_c, abs_l, r_abs, pcpar[12];
	81	Float_t dr, dz,
	82	zs, theta_open;
	83	Float_t cz1, cz2;
	84	Float_t dzcoch1, dzcoch2, acc_min, dzs, zcone_e, zmag_in,
	85	z_close, z_l3, shl1, shl4;
	86
ad51aeb0	87	Int_t *idtmed = fIdtmed->GetArray()-1699;
fe4da5cc	88
	89	//abs_d = 90.; // DEFINES DRIFT LENGTH
	90	//z_nose = 102.;
	91	//z_cone = 285.;
	92	//theta1 = 24.; // 1. angle defining the front absorber
	93	//theta2 = 5.; // 2. angle defining the front absorbe
	94	//acc_max = 9.; // ANGLE POLAIRE MAXIMUM
	95	acc_min = 2.; // ANGLE POLAIRE MINIMUM DE DETECTION
	96	abs_l = 503.;
	97	//d_steel = 1.; // THICKNESS OF STEEL SUPPORT
	98	//d_poly = 7.5;
	99	//d_pb = 2.5;
	100	//abs_cc = 315.; // DEFINES LENGTH OF CARBON
	101	abs_c = 358.;
	102	//abs_s = 150.; // DEFINES W-SHIELD LENGTH
	103	//abs_n = 80.; // START OF NOSE
	104	r_abs = 4.;
	105	r_pb = .1;
	106	//epsilon = .01;
	107	//theta_r = 3.;
	108	//d_rear = 35.;
	109	theta_open = .75;
	110
	111	z_l3 = 700.;
	112	zmag_in = 725.;
	113	zmag_out = 1225.;
	114	//zfil_in = 1471.;
	115	//zfil_out = 1591.;
	116	//zcon_in = 1900.;
	117	//zcon_out = 2e3;
	118	zcone_e = 859.0875;
	119	//spec_l = 1800.;
	120	//zplug_in = 1780.;
	121	//zplug_out = 1900.;
	122
	123	// Chamber position
	124	// CZ1=515.5
	125	cz1 = 511.;
	126	cz2 = 686.;
	127	//cz3 = 971.;
	128	//cz4 = 1245.;
	129	//cz5 = 1445.;
	130	//cz6 = 1610.;
	131	//cz7 = 1710.;
	132
	133
	134	// the mother of all shields
	135
	136	parm[0] = 0.;
	137	parm[1] = 360.;
	138	parm[2] = 3.;
	139	parm[3] = abs_l;
	140	parm[4] = 0.;
	141	parm[5] = abs_l * TMath::Tan(acc_min * kDegrad);
	142	parm[6] = zcone_e;
	143	parm[7] = 0.;
	144	parm[8] = 30.;
	145	parm[9] = 1900.;
	146	parm[10] = 0.;
	147	parm[11] = 30.;
cfce8870	148	gMC->Gsvolu("YMOT", "PCON", idtmed[1715], parm, 12);
fe4da5cc	149
	150	// beam shield ouside absorber inside l3
	151
	152	shl1 = (z_l3 - abs_l) / 2.;
	153	cpar[0] = shl1;
	154	cpar[1] = 0.;
	155	cpar[2] = abs_l * TMath::Tan(acc_min * kDegrad);
	156	cpar[3] = 0.;
	157	cpar[4] = z_l3 * TMath::Tan(acc_min * kDegrad);
cfce8870	158	gMC->Gsvolu("YMS1", "CONE", idtmed[1759], cpar, 5);
fe4da5cc	159
	160	// OUTSIDE STEEL TUBE
	161	// Pb/W
	162	cpar[1] = cpar[2] - 4.;
	163	cpar[3] = cpar[4] - 4.;
cfce8870	164	gMC->Gsvolu("YSH1", "CONE", idtmed[1718], cpar, 5);
cfce8870	165	gMC->Gspos("YSH1", 1, "YMS1", 0., 0., 0., 0, "ONLY");
fe4da5cc	166
	167	// COCHES FOR CHAMBERS
	168	dzcoch1 = cz1 + 4. - (abs_l + shl1);
	169	dzcoch2 = cz2 + 4. - (abs_l + shl1);
	170
	171	// AIR
	172	cpar[0] = 7.5;
	173	dr = cpar[0] * 2. * TMath::Tan(acc_min * kDegrad);
	174	cpar[2] = (cz1 + 4. - cpar[0]) * TMath::Tan(acc_min * kDegrad);
	175	cpar[1] = cpar[2] - 3.;
	176	cpar[3] = cpar[1] + dr;
	177	cpar[4] = cpar[2] + dr;
cfce8870	178	gMC->Gsvolu("YAC1", "CONE", idtmed[1714], cpar, 5);
cfce8870	179	gMC->Gspos("YAC1", 1, "YMS1", 0., 0., dzcoch1, 0, "ONLY");
fe4da5cc	180	cpar[2] = (cz2 + 4. - cpar[0]) * TMath::Tan(acc_min * kDegrad);
	181	cpar[1] = cpar[2] - 3.;
	182	cpar[3] = cpar[1] + dr;
	183	cpar[4] = cpar[2] + dr;
cfce8870	184	gMC->Gsvolu("YAC2", "CONE", idtmed[1714], cpar, 5);
cfce8870	185	gMC->Gspos("YAC2", 1, "YMS1", 0., 0., dzcoch2, 0, "ONLY");
fe4da5cc	186
	187	// STEEL
	188	cpar[0] = (cz1 + 4. + 20. - abs_l) / 2.;
	189	dr = cpar[0] * 2. * TMath::Tan(acc_min * kDegrad);
	190	// CPAR(3)=ABS_LTAN(kDegradACC_MIN)-3.
	191	cpar[2] = abs_l * TMath::Tan(acc_min * kDegrad) - 4.;
	192	cpar[1] = cpar[2] - 3.;
	193	cpar[3] = cpar[1] + dr;
	194	cpar[4] = cpar[2] + dr;
	195	dzcoch1 = abs_l + cpar[0] - (abs_l + shl1);
cfce8870	196	gMC->Gsvolu("YSC1", "CONE", idtmed[1718], cpar, 5);
cfce8870	197	gMC->Gspos("YSC1", 1, "YMS1", 0., 0., dzcoch1, 0, "ONLY");
fe4da5cc	198
	199	cpar[0] = 16.;
	200	dr = cpar[0] * 2. * TMath::Tan(acc_min * kDegrad);
	201	// CPAR(3)=(CZ2+4.-CPAR(1))TAN(kDegradACC_MIN)-3.
	202	cpar[2] = (cz2 + 4. - cpar[0]) * TMath::Tan(acc_min * kDegrad) - 4.;
	203	cpar[1] = cpar[2] - 3.;
	204	cpar[3] = cpar[1] + dr;
	205	cpar[4] = cpar[2] + dr;
cfce8870	206	gMC->Gsvolu("YSC2", "CONE", idtmed[1718], cpar, 5);
cfce8870	207	gMC->Gspos("YSC2", 1, "YMS1", -4., 0., dzcoch2, 0, "ONLY");
fe4da5cc	208
	209	// ... beam pipe
	210	cpar[0] = shl1;
	211	cpar[1] = 0.;
	212	cpar[2] = r_abs + (abs_l - abs_c) * TMath::Tan(theta_open * kDegrad);
	213	cpar[3] = 0.;
	214	cpar[4] = cpar[2] + shl1 * 2. * TMath::Tan(theta_open * kDegrad);
cfce8870	215	gMC->Gsvolu("YMB1", "CONE", idtmed[1755], cpar, 5);
fe4da5cc	216
	217	cpar[0] = shl1;
	218	cpar[2] += -.8;
	219	cpar[1] = cpar[2] - .2;
	220	cpar[4] += -.8;
	221	cpar[3] = cpar[4] - .2;
cfce8870	222	gMC->Gsvolu("YBS1", "CONE", idtmed[1749], cpar, 5);
cfce8870	223	gMC->Gspos("YBS1", 1, "YMB1", 0., 0., 0., 0, "ONLY");
fe4da5cc	224
fe4da5cc	225
cfce8870	226	gMC->Gspos("YMB1", 1, "YMS1", 0., 0., 0., 0, "ONLY");
fe4da5cc	227	dz = shl1 + abs_l;
cfce8870	228	gMC->Gspos("YMS1", 1, "YMOT", 0., 0., dz, 0, "ONLY");
fe4da5cc	229
	230	// BEAM SHIELD OUTSIDE L3
	231
	232	// L3->DIPOLE
	233	cpar[0] = (zmag_in - z_l3) / 2.;
	234	cpar[1] = 0.;
	235	cpar[2] = z_l3 * TMath::Tan(acc_min * kDegrad);
	236	cpar[3] = 0.;
	237	cpar[4] = zmag_in * TMath::Tan(acc_min * kDegrad);
cfce8870	238	gMC->Gsvolu("YMS2", "CONE", idtmed[1759], cpar, 5);
fe4da5cc	239
	240	// OUTSIDE STEEL TUBE
	241
	242	// Pb/W
	243	cpar[1] = cpar[2] - 4.;
	244	cpar[3] = cpar[4] - 4.;
cfce8870	245	gMC->Gsvolu("YSH2", "CONE", idtmed[1718], cpar, 5);
cfce8870	246	gMC->Gspos("YSH2", 1, "YMS2", 0., 0., 0., 0, "ONLY");
fe4da5cc	247
	248	// ... beam pipe
	249
	250	zs = z_l3 - abs_c;
	251	cpar[1] = 0.;
	252	cpar[2] = r_abs + zs * TMath::Tan(theta_open * kDegrad);
	253	cpar[3] = 0.;
	254	cpar[4] = cpar[2] + cpar[0] * 2. * TMath::Tan(theta_open * kDegrad);
cfce8870	255	gMC->Gsvolu("YMB2", "CONE", idtmed[1755], cpar, 5);
fe4da5cc	256
	257	cpar[2] += -.8;
	258	cpar[1] = cpar[2] - .2;
	259	cpar[4] += -.8;
	260	cpar[3] = cpar[4] - .2;
cfce8870	261	gMC->Gsvolu("YBS2", "CONE", idtmed[1749], cpar, 5);
cfce8870	262	gMC->Gspos("YBS2", 1, "YMB2", 0., 0., 0., 0, "ONLY");
fe4da5cc	263
fe4da5cc	264
cfce8870	265	gMC->Gspos("YMB2", 1, "YMS2", 0., 0., 0., 0, "ONLY");
fe4da5cc	266	dz = cpar[0] + z_l3;
cfce8870	267	gMC->Gspos("YMS2", 1, "YMOT", 0., 0., dz, 0, "ONLY");
fe4da5cc	268	pcpar[0] = 0.;
	269	pcpar[1] = 360.;
	270	pcpar[2] = 3.;
	271	pcpar[3] = 0.;
	272	pcpar[4] = 0.;
	273	pcpar[5] = zmag_in * TMath::Tan(acc_min * kDegrad);
	274	pcpar[6] = zcone_e - zmag_in;
	275	pcpar[7] = 0.;
	276	pcpar[8] = 30.;
	277	pcpar[9] = zmag_out - zmag_in;
	278	pcpar[10] = 0.;
	279	pcpar[11] = 30.;
cfce8870	280	gMC->Gsvolu("YMS3", "PCON", idtmed[1759], pcpar, 12);
fe4da5cc	281
	282	// OUTSIDE STEEL TUBE
	283
	284	// Pb/W
	285	pcpar[4] = pcpar[5] - 4.;
	286	pcpar[7] = pcpar[8] - 4.;
	287	pcpar[10] = pcpar[11] - 4.;
cfce8870	288	gMC->Gsvolu("YSH3", "PCON", idtmed[1718], pcpar, 12);
cfce8870	289	gMC->Gspos("YSH3", 1, "YMS3", 0., 0., 0., 0, "MANY");
fe4da5cc	290
	291	// ... beam pipe up to closing cone
	292
	293	zs = zmag_in - abs_c;
	294	z_close = 804.;
	295
	296	cpar[0] = (z_close - zmag_in) / 2.;
	297	cpar[1] = 0.;
	298	cpar[2] = r_abs + zs * TMath::Tan(theta_open * kDegrad);
	299	cpar[3] = 0.;
	300	cpar[4] = cpar[2] + cpar[0] * 2. * TMath::Tan(theta_open * kDegrad);
cfce8870	301	gMC->Gsvolu("YMB3", "CONE", idtmed[1755], cpar, 5);
fe4da5cc	302
	303	cpar[2] += -.8;
	304	cpar[1] = cpar[2] - .2;
	305	cpar[4] += -.8;
	306	cpar[3] = cpar[4] - .2;
cfce8870	307	gMC->Gsvolu("YBS3", "CONE", idtmed[1749], cpar, 5);
	308	gMC->Gspos("YBS3", 1, "YMB3", 0., 0., 0., 0, "ONLY");
	309	gMC->Gspos("YMB3", 1, "YMS3", 0., 0., cpar[0], 0, "ONLY");
fe4da5cc	310
	311	// .closing cone
	312
	313	dzs = cpar[0] * 2.;
	314	zs = z_close - abs_c;
	315
	316	cpar[0] = 25.;
	317	cpar[1] = 0.;
	318	cpar[2] = r_abs + zs * TMath::Tan(theta_open * kDegrad);
	319	cpar[3] = 0.;
	320	cpar[4] = r_abs;
cfce8870	321	gMC->Gsvolu("YMB5", "CONE", idtmed[1755], cpar, 5);
fe4da5cc	322
	323	cpar[2] += -.8;
	324	cpar[1] = cpar[2] - .2;
	325	cpar[4] += -.8;
	326	cpar[3] = cpar[4] - .2;
cfce8870	327	gMC->Gsvolu("YBS5", "CONE", idtmed[1749], cpar, 5);
cfce8870	328	gMC->Gspos("YBS5", 1, "YMB5", 0., 0., 0., 0, "ONLY");
fe4da5cc	329
fe4da5cc	330	dzs += cpar[0];
cfce8870	331	gMC->Gspos("YMB5", 1, "YMS3", 0., 0., dzs, 0, "ONLY");
fe4da5cc	332	dzs += cpar[0];
	333
	334	// OUTSIDE PB-TUBE
	335
	336	tpar[0] = 30. - r_pb - 4.;
	337	tpar[1] = 30. - r_pb;
	338	tpar[2] = (zmag_out - z_close - 50.) / 2.;
	339	dzs += tpar[2];
cfce8870	340	gMC->Gsvolu("YNW1", "TUBE", idtmed[1752], tpar, 3);
cfce8870	341	gMC->Gspos("YNW1", 1, "YMS3", 0., 0., dzs, 0, "MANY");
fe4da5cc	342
	343	// constant beam pipe up to end of magnet
	344
	345	tpar[0] = 0.;
	346	tpar[1] = r_abs;
	347	tpar[2] = (zmag_out - z_close - 50.) / 2.;
cfce8870	348	gMC->Gsvolu("YMB6", "TUBE", idtmed[1755], tpar, 3);
fe4da5cc	349
	350	tpar[1] = r_abs - .8;
	351	tpar[0] = tpar[1] - .2;
cfce8870	352	gMC->Gsvolu("YBS6", "TUBE", idtmed[1749], tpar, 3);
	353	gMC->Gspos("YBS6", 1, "YMB6", 0., 0., 0., 0, "ONLY");
	354	gMC->Gspos("YMB6", 1, "YMS3", 0., 0., dzs, 0, "ONLY");
fe4da5cc	355
fe4da5cc	356	dz = zmag_in;
cfce8870	357	gMC->Gspos("YMS3", 1, "YMOT", 0., 0., dz, 0, "ONLY");
fe4da5cc	358
	359	// DIPOLE->
	360
	361	tpar[0] = 0.;
	362	tpar[1] = 30.;
	363	tpar[2] = (1900. - zmag_out) / 2.;
	364	shl4 = tpar[2];
cfce8870	365	gMC->Gsvolu("YMS4", "TUBE", idtmed[1759], tpar, 3);
fe4da5cc	366	// CALL GSVOLU('YMS4','TUBE',IDTMED(1752),TPAR,3,IL3) ! W
	367
	368	// OUTSIDE STEEL TUBE
	369
	370	// Pb/W
	371	tpar[0] = tpar[1] - 4.;
cfce8870	372	gMC->Gsvolu("YSH4", "TUBE", idtmed[1718], tpar, 3);
cfce8870	373	gMC->Gspos("YSH4", 1, "YMS4", 0., 0., 0., 0, "MANY");
fe4da5cc	374
	375	// OUTSIDE PB-TUBE
	376
	377	tpar[0] = 30. - r_pb - 4.;
	378	tpar[1] = 30. - r_pb;
cfce8870	379	gMC->Gsvolu("YNW2", "TUBE", idtmed[1752], tpar, 3);
cfce8870	380	gMC->Gspos("YNW2", 1, "YMS4", 0., 0., 0., 0, "MANY");
fe4da5cc	381
	382	// ... beam pipe
	383
	384	tpar[0] = 0.;
	385	tpar[1] = r_abs;
	386	tpar[2] = shl4;
cfce8870	387	gMC->Gsvolu("YMB4", "TUBE", idtmed[1755], tpar, 3);
fe4da5cc	388
	389	tpar[2] = shl4;
	390	tpar[1] = r_abs - .8;
	391	tpar[0] = tpar[1] - .2;
cfce8870	392	gMC->Gsvolu("YBS4", "TUBE", idtmed[1749], tpar, 3);
cfce8870	393	gMC->Gspos("YBS4", 1, "YMB4", 0., 0., 0., 0, "ONLY");
fe4da5cc	394
	395
	396	dz = zmag_out + shl4;
cfce8870	397	gMC->Gspos("YMB4", 1, "YMS4", 0., 0., 0., 0, "ONLY");
	398	gMC->Gspos("YMS4", 1, "YMOT", 0., 0., dz, 0, "ONLY");
	399	gMC->Gspos("YMOT", 1, "ALIC", 0., 0., 0., 0, "ONLY");
fe4da5cc	400	}
	401
	402	//_____________________________________________________________________________
	403	void AliSHIL::CreateMaterials()
	404	{
	405	//
	406	// Defines materials for the muon shield
	407	//
	408	// Origin N. Van Eijndhoven
	409	//
	410
	411	Int_t ISXFLD = gAlice->Field()->Integ();
	412	Float_t SXMGMX = gAlice->Field()->Max();
	413
	414	Float_t asteel[4] = { 55.847,51.9961,58.6934,28.0855 };
	415	Float_t zsteel[4] = { 26.,24.,28.,14. };
	416	Float_t wsteel[4] = { .715,.18,.1,.005 };
	417	Float_t apbw[2] = { 207.2,183.85 };
	418	Float_t zpbw[2] = { 82.,74. };
	419	Float_t wpbw[2] = { .5,.5 };
	420
	421	Float_t epsil, stmin, tmaxfd, deemax, stemax;
	422
	423	// STEEL
	424
	425
	426	// LEAD/TUNGSTEN MIXTURE
	427
	428
	429	// --- Define the various materials for GEANT ---
	430	// Aluminum
	431	AliMaterial(9, "ALUMINIUM$", 26.98, 13., 2.7, 8.9, 37.2);
	432	AliMaterial(29, "ALUMINIUM$", 26.98, 13., 2.7, 8.9, 37.2);
	433	AliMaterial(49, "ALUMINIUM$", 26.98, 13., 2.7, 8.9, 37.2);
	434
	435	// Iron
	436	AliMaterial(10, "IRON$ ", 55.85, 26., 7.87, 1.76, 17.1);
	437	AliMaterial(30, "IRON$ ", 55.85, 26., 7.87, 1.76, 17.1);
	438	AliMaterial(50, "IRON$ ", 55.85, 26., 7.87, 1.76, 17.1);
	439
	440	// Tungsten
	441	AliMaterial(12, "TUNGSTEN$ ", 183.85, 74., 19.3, .35, 10.3);
	442	AliMaterial(32, "TUNGSTEN$ ", 183.85, 74., 19.3, .35, 10.3);
	443	AliMaterial(52, "TUNGSTEN$ ", 183.85, 74., 19.3, .35, 10.3);
	444
	445	// Lead
	446	AliMaterial(13, "LEAD$ ", 207.19, 82., 11.35, .56, 18.5);
	447	AliMaterial(33, "LEAD$ ", 207.19, 82., 11.35, .56, 18.5);
	448	AliMaterial(53, "LEAD$ ", 207.19, 82., 11.35, .56, 18.5);
	449
	450	// Air
	451	AliMaterial(15, "AIR$ ", 14.61, 7.3, .001205, 30423.24, 67500);
	452	AliMaterial(35, "AIR$ ", 14.61, 7.3, .001205, 30423.24, 67500);
	453	AliMaterial(55, "AIR$ ", 14.61, 7.3, .001205, 30423.24, 67500);
	454
	455	// Vacuum
	456	AliMaterial(16, "VACUUM$ ", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
	457	AliMaterial(36, "VACUUM$ ", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
	458	AliMaterial(56, "VACUUM$ ", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
	459
	460	// stainless Steel
	461	AliMixture(19, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel);
	462	AliMixture(39, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel);
	463	AliMixture(59, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel);
464
465	// Lead/Tungsten
466	AliMixture(20, "LEAD/TUNGSTEN$", apbw, zpbw, 15.325, 2, wpbw);
467	AliMixture(40, "LEAD/TUNGSTEN$", apbw, zpbw, 15.325, 2, wpbw);
468	AliMixture(60, "LEAD/TUNGSTEN$", apbw, zpbw, 15.325, 2, wpbw);
469
470	// ****************
471	// Defines tracking media parameters.
472	// Les valeurs sont commentees pour laisser le defaut
473	// a GEANT (version 3-21, page CONS200), f.m.
474	epsil = .001; // Tracking precision,
475	stemax = -1.; // Maximum displacement for multiple scat
476	tmaxfd = -20.; // Maximum angle due to field deflection
477	deemax = -.3; // Maximum fractional energy loss, DLS
478	stmin = -.8;
479	// ***************
480
481	// Aluminum
ad51aeb0	482	AliMedium(9, "ALU_C0 ", 9, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
	483	AliMedium(29, "ALU_C1 ", 29, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
	484	AliMedium(49, "ALU_C2 ", 49, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
fe4da5cc	485
fe4da5cc	486	// Iron
ad51aeb0	487	AliMedium(10, "FE_C0 ", 10, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
	488	AliMedium(30, "FE_C1 ", 30, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
	489	AliMedium(50, "FE_C2 ", 50, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
fe4da5cc	490
fe4da5cc	491	// Tungsten
ad51aeb0	492	AliMedium(12, "W_C0 ", 12, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
	493	AliMedium(32, "W_C1 ", 32, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
	494	AliMedium(52, "W_C2 ", 52, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
fe4da5cc	495
fe4da5cc	496	// Lead
ad51aeb0	497	AliMedium(13, "PB_C0 ", 13, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
	498	AliMedium(33, "PB_C1 ", 33, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
	499	AliMedium(53, "PB_C2 ", 53, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
fe4da5cc	500
fe4da5cc	501	// Air
ad51aeb0	502	AliMedium(15, "AIR_C0 ", 15, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
	503	AliMedium(35, "AIR_C1 ", 35, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
	504	AliMedium(55, "AIR_C2 ", 55, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
fe4da5cc	505
fe4da5cc	506	// Vacuum
ad51aeb0	507	AliMedium(16, "VA_C0 ", 16, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
	508	AliMedium(36, "VA_C1 ", 36, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
	509	AliMedium(56, "VA_C2 ", 56, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
fe4da5cc	510
fe4da5cc	511	// Steel
ad51aeb0	512	AliMedium(19, "ST_C0 ", 19, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
	513	AliMedium(39, "ST_C1 ", 39, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
	514	AliMedium(59, "ST_C3 ", 59, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
fe4da5cc	515
fe4da5cc	516	// Lead/Tungsten
ad51aeb0	517	AliMedium(20, "PB/W0 ", 20, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
	518	AliMedium(40, "PB/W1 ", 40, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
	519	AliMedium(60, "PB/W3 ", 60, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
fe4da5cc	520	}
	521
	522	//_____________________________________________________________________________
b8032157	523	void AliSHIL::DrawModule ()
fe4da5cc	524	{
	525	//
	526	// Draw a shaded view of the muon shield
	527	//
	528
fe4da5cc	529	// Set everything unseen
cfce8870	530	gMC->Gsatt("*", "seen", -1);
fe4da5cc	531	//
fe4da5cc	532	// Set ALIC mother transparent
cfce8870	533	gMC->Gsatt("ALIC","SEEN",0);
fe4da5cc	534	//
fe4da5cc	535	// Set the volumes visible
cfce8870	536	gMC->Gsatt("YMOT","seen",1);
	537	gMC->Gsatt("YMS1","seen",1);
	538	gMC->Gsatt("YSH1","seen",1);
	539	gMC->Gsatt("YAC1","seen",1);
	540	gMC->Gsatt("YAC2","seen",1);
	541	gMC->Gsatt("YSC1","seen",1);
	542	gMC->Gsatt("YSC2","seen",1);
	543	gMC->Gsatt("YMB1","seen",1);
	544	gMC->Gsatt("YBS1","seen",1);
	545	gMC->Gsatt("YMS2","seen",1);
	546	gMC->Gsatt("YSH2","seen",1);
	547	gMC->Gsatt("YMB2","seen",1);
	548	gMC->Gsatt("YBS2","seen",1);
	549	gMC->Gsatt("YMS3","seen",1);
	550	gMC->Gsatt("YSH3","seen",1);
	551	gMC->Gsatt("YMB3","seen",1);
	552	gMC->Gsatt("YBS3","seen",1);
	553	gMC->Gsatt("YMB5","seen",1);
	554	gMC->Gsatt("YBS5","seen",1);
	555	gMC->Gsatt("YNW1","seen",1);
	556	gMC->Gsatt("YMB6","seen",1);
	557	gMC->Gsatt("YBS6","seen",1);
	558	gMC->Gsatt("YMS4","seen",1);
	559	gMC->Gsatt("YSH4","seen",1);
	560	gMC->Gsatt("YNW2","seen",1);
	561	gMC->Gsatt("YMB4","seen",1);
	562	gMC->Gsatt("YBS4","seen",1);
fe4da5cc	563	//
cfce8870	564	gMC->Gdopt("hide", "on");
	565	gMC->Gdopt("shad", "on");
	566	gMC->Gsatt("*", "fill", 7);
	567	gMC->SetClipBox(".");
	568	gMC->SetClipBox("*", 0, 3000, -3000, 3000, -6000, 6000);
	569	gMC->DefaultRange();
	570	gMC->Gdraw("alic", 30, 30, 0, 26.5, 18, .03, .03);
	571	gMC->Gdhead(1111, "Muon Shield");
	572	gMC->Gdman(16, 6, "MAN");
fe4da5cc	573	}
	574
	575	//_____________________________________________________________________________
	576	void AliSHIL::Init()
	577	{
	578	//
	579	// Initialise the muon shield after it has been built
	580	//
	581	Int_t i;
	582	//
	583	printf("\n");
	584	for(i=0;i<35;i++) printf("*");
	585	printf(" SHIL_INIT ");
	586	for(i=0;i<35;i++) printf("*");
	587	printf("\n");
	588	//
	589	// Here the ABSO initialisation code (if any!)
	590	for(i=0;i<80;i++) printf("*");
	591	printf("\n");
	592	}
	593
	594