[u/mrichter/AliRoot.git] / STRUCT / AliABSOv0.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.                  *
 **************************************************************************/

/* $Id$ */

///////////////////////////////////////////////////////////////////////////////
//                                                                           //
//  Muon ABSOrber                                                            //
//  This class contains the description of the muon absorber geometry        //
//                                                                           //
//Begin_Html
/*
<img src="picts/AliABSOClass.gif">
</pre>
<br clear=left>
<font size=+2 color=red>
<p>The responsible person for this module is
<a href="mailto:andreas.morsch@cern.ch">Andreas Morsch</a>.
</font>
<pre>
*/
//End_Html
//                                                                           //
//                                                                           //
///////////////////////////////////////////////////////////////////////////////

#include <TVirtualMC.h>
#include <TGeoManager.h>
#include <TGeoVolume.h>
#include <TGeoMatrix.h>
#include <TGeoCompositeShape.h>
#include <TGeoBBox.h>
#include <TGeoXtru.h>
#include <TGeoTube.h>
#include <TGeoPgon.h>
#include <TGeoArb8.h>
#include <TGeoMedium.h>

#include "AliABSOv0.h"
#include "AliConst.h"
#include "AliRun.h"
#include "AliLog.h"

ClassImp(AliABSOv0)
 
//_____________________________________________________________________________
AliABSOv0::AliABSOv0()
{
  //
  // Default constructor
  //
}
 
//_____________________________________________________________________________
AliABSOv0::AliABSOv0(const char *name, const char *title)
       : AliABSO(name,title)
{
  //
  // Standard constructor
  //
}
 
//_____________________________________________________________________________
void AliABSOv0::CreateGeometry()
{
    //
    // Creation of the geometry of the muon absorber
    //
    //Begin_Html
    /*
      <img src="picts/AliABSOv0Tree.gif">
    */
    //End_Html
    //Begin_Html
    /*
      <img src="picts/AliABSOv0.gif">
    */
    //End_Html
    
    //
    //

    enum {kC=1605, kAl=1608, kFe=1609, kCu=1610, kW=1611, kPb=1612,
	  kNiCuW=1620, kVacuum=1615, kAir=1614, kConcrete=1616,
	  kPolyCH2=1617, kSteel=1618, kInsulation=1613, kPolyCc=1619};	  
    
    Int_t *idtmed = fIdtmed->GetArray()-1599;
    
    Float_t par[24], cpar[5], cpar0[5], pcpar[12], tpar[3], tpar0[3]; 
    Float_t dz;
#include "ABSOSHILConst.h"
#include "ABSOConst.h"
//
// Structure of Tracking Region
//
  Float_t dzFe = 25.;

// 3 < theta < 9
    fNLayers[0] = 5; 
    fMLayers[0][0]  = kAir;              fZLayers[0][0] = kZAbsStart;
    fMLayers[0][1]  = kC;                fZLayers[0][1] = kZAbsCc;             
    fMLayers[0][2]  = kConcrete;         fZLayers[0][2] = kZRear - kDRear - dzFe;
    fMLayers[0][3]  = kSteel;            fZLayers[0][3] = kZRear - kDRear;
    fMLayers[0][4]  = kSteel;            fZLayers[0][4] = kZRear;
// 2 < theta < 3
    fNLayers[1] = 6; 

    fMLayers[1][0] = kAir          ;      fZLayers[1][0] = fZLayers[0][0] - 10.;
    fMLayers[1][1] = kAl           ;      fZLayers[1][1] = fZLayers[0][0];
    fMLayers[1][2] = fMLayers[0][1];      fZLayers[1][2] = fZLayers[0][1];
    fMLayers[1][3] = fMLayers[0][2];      fZLayers[1][3] = fZLayers[0][2];
    fMLayers[1][4] = fMLayers[0][3];      fZLayers[1][4] = fZLayers[0][3];
    fMLayers[1][5] = kNiCuW;              fZLayers[1][5] = fZLayers[0][4];
//    

    Float_t dTube = 0.1;                     // tube thickness
    Float_t dInsu = 0.5;                     // insulation thickness
    Float_t dEnve = 0.1;                     // protective envelope thickness


// Mother volume and outer shielding: Pb
  par[0]  = 0.;
  par[1]  = 360.;
  par[2]  = 7.;
    
  par[21] = (kZRear - kZAbsStart) / 2.;
  par[22] = kRAbs;
  par[23] = kZAbsStart * TMath::Tan(kTheta1);

  par[18] = par[21] - (kZNose - kZAbsStart);
  par[19] = kRAbs;
  par[20] = kZNose * TMath::Tan(kTheta1);

  par[15] = par[21] - (kZConeTPC - kZAbsStart);
  par[16] = kRAbs;
  par[17] = par[20] - (par[15] - par[18]) * TMath::Tan(kTheta2);

  par[12] = par[21]  - (kZOpen - kZAbsStart);
  par[13] = kRAbs;
  par[14] = par[17] - (par[12] - par[15]) * TMath::Tan(kAccMax);

  par[9]  = par[21]  - (kZRear - kDRear - kZAbsStart);
  par[10] = kRAbs   - (par[9] - par[12]) * TMath::Tan(kThetaOpen1) ;
  par[11] = par[14] - (par[9] - par[12]) * TMath::Tan(kAccMax);

  par[6]  = par[21]  - (kZRear - kDRear - kZAbsStart);
  par[7]  = (kZRear - kDRear) * TMath::Tan(kAccMin);
  par[8]  = par[14] - (par[6] - par[12]) * TMath::Tan(kAccMax);

  par[3] =  - par[21];
  par[4] = kZRear  * TMath::Tan(kAccMin);
  par[5] = par[8] - (par[3] - par[6]) * TMath::Tan(kAccMax);
  gMC->Gsvolu("ABSS", "PCON", idtmed[kPb+40], par, 24);

  for (Int_t i = 22; i > 7; i -= 3) par[i]  = 0;

  gMC->Gsvolu("ABSM", "PCON", idtmed[kVacuum+40], par, 24);
  gMC->Gspos("ABSS", 1, "ABSM", 0., 0., 0., 0, "ONLY");

//
// Steel envelope
//
  par[4] = par[5]  - kDSteel;
  par[7] = par[8]  - kDSteel;
  par[10]= par[11] - kDSteel;  
  par[13]= par[14] - kDSteel;  
  par[16]= par[17] - kDSteel;  
  par[19]= par[20] - kDSteel;  
  par[22]= par[23] - kDSteel;  

  gMC->Gsvolu("ABST", "PCON", idtmed[kSteel], par, 24);
  gMC->Gspos("ABST", 1, "ABSS", 0., 0., 0., 0, "ONLY");
//
// Polyethylene shield
// 
  cpar[0] = (kZRear - kZConeTPC) / 2.;
  cpar[1] = kZRear * TMath::Tan(kAccMax);
  cpar[2] = cpar[1] + kDPoly;
  cpar[3] = kZConeTPC * TMath::Tan(kAccMax);
  cpar[4] = cpar[3] + kDPoly;

  gMC->Gsvolu("APOL", "CONE", idtmed[kPolyCH2+40], cpar, 5);
  dz = - (kZRear - kZAbsStart) / 2. + cpar[0];
  gMC->Gspos("APOL", 1, "ABSS", 0., 0., dz, 0, "ONLY");

//
// Tungsten nose to protect TPC
// 
  cpar[0] = (kZNose - kZAbsStart) / 2.;
  cpar[1] = kZNose * TMath::Tan(kAccMax);
  cpar[2] = kZNose * TMath::Tan(kTheta1) - kDSteel;
  cpar[3] = kZAbsStart * TMath::Tan(kAccMax);
  cpar[4] = kZAbsStart * TMath::Tan(kTheta1) - kDSteel;

  gMC->Gsvolu("ANOS", "CONE", idtmed[kNiCuW], cpar, 5);
  //
  dz =  (kZRear - kZAbsStart) / 2. - cpar[0];
  gMC->Gspos("ANOS", 1, "ABSS", 0., 0., dz, 0, "ONLY");
  //
  // Tungsten inner shield
  //
  Float_t zW = kZTwoDeg + .1;
  Float_t dZ = zW + (kZRear - kDRear - zW) / 2.;
  //
  pcpar[0]  = 0.;
  pcpar[1]  = 360.;
  pcpar[2]  = 3.;
  pcpar[9]  = - (zW - dZ);
  pcpar[10] = kRAbs;
  pcpar[11] = zW * TMath::Tan(kAccMin);
  pcpar[6]  = - (kZOpen - dZ);
  pcpar[7]  = kRAbs;
  pcpar[8]  = kZOpen * TMath::Tan(kAccMin);
  pcpar[3]  = - (kZRear - kDRear - dZ);
  pcpar[4]  = kRAbs + (kZRear - kDRear - kZOpen) * TMath::Tan(kThetaOpen1);
  pcpar[5]  = (kZRear - kDRear) * TMath::Tan(kAccMin);
  
  gMC->Gsvolu("AWIN", "PCON", idtmed[kNiCuW+40], pcpar, 12);
  dz = -(zW + kZRear - kDRear) / 2 + (kZAbsStart + kZRear) / 2.;
  gMC->Gspos("AWIN", 1, "ABSS", 0., 0., dz, 0, "ONLY");
//
// First part replaced by Carbon  
//
  cpar[0] = (200.-zW)/2.;

  cpar[1] = kRAbs;
  cpar[2] = 200. * TMath::Tan(kAccMin);
  cpar[3] = kRAbs;
  cpar[4] = pcpar[11];

  gMC->Gsvolu("ACNO", "CONE", idtmed[kC], cpar, 5);
  dz = - (zW - dZ+cpar[0]);
  gMC->Gspos("ACNO", 1, "AWIN", 0., 0., dz, 0, "ONLY");

/*  
  Float_t zWW = 383.5;
  cpar[0] = (kZRear-kDRear-zWW)/2.;
  cpar[1] = kRAbs + (zWW-kZOpen) *  TMath::Tan(kThetaOpen1);
  cpar[2] =  zWW * TMath::Tan(kAccMin);
  cpar[3] = pcpar[10];
  cpar[4] = pcpar[11];
  gMC->Gsvolu("AWNO", "CONE", idtmed[kCu+40], cpar, 5);
  dz = zWW-dZ+cpar[0];
  
  gMC->Gspos("AWNO", 1, "AWIN", 0., 0., dz, 0, "ONLY");
*/
  //
  //     Inner tracking region
  //
  //
  //
  pcpar[0]  = 0.;
  pcpar[1]  = 360.;
  pcpar[2]  = 3.;
  pcpar[9]  = (kZRear - kZAbsStart) / 2.;
  pcpar[10] = kRAbs;
  pcpar[11] = kZAbsStart * TMath::Tan(kAccMax);
  pcpar[6]  = pcpar[9] - (kZTwoDeg - kZAbsStart);
  pcpar[7]  = kRAbs;
  pcpar[8]  = kZTwoDeg * TMath::Tan(kAccMax);
  pcpar[3]  = - pcpar[9];
  pcpar[4]  = kZRear * TMath::Tan(kAccMin);
  pcpar[5]  = kZRear * TMath::Tan(kAccMax);
  gMC->Gsvolu("AITR", "PCON", idtmed[fMLayers[0][4]], pcpar, 12);
  //
  // special Pb medium for last 5 cm of Pb
  Float_t zr = kZRear - 2. - 0.001;
  cpar[0] = 1.0;
  cpar[3] = zr * TMath::Tan(kThetaR);
  cpar[4] = zr * TMath::Tan(kAccMax);
  cpar[1] = cpar[3] + TMath::Tan(kThetaR) * 2;
  cpar[2] = cpar[4] + TMath::Tan(kAccMax) * 2;
  
  gMC->Gsvolu("ARPB", "CONE", idtmed[fMLayers[0][4]], cpar, 5);
  dz= - (kZRear - kZAbsStart) / 2. + cpar[0] - 0.001;
  gMC->Gspos("ARPB", 1, "AITR", 0., 0., dz, 0, "ONLY");
  //
  //     concrete cone: concrete 
  //
  pcpar[3]  = pcpar[9] - (kZRear - kDRear - kZAbsStart);
  pcpar[4] = (kZRear-kDRear) * TMath::Tan(kAccMin);
  pcpar[5] = (kZRear-kDRear) * TMath::Tan(kAccMax);
  gMC->Gsvolu("ACON", "PCON", idtmed[fMLayers[0][2]+40], pcpar, 12);
  gMC->Gspos("ACON", 1, "AITR", 0., 0., 0., 0, "ONLY");
//
//    Fe Cone 
//
  zr = kZRear - kDRear - dzFe;

  cpar[0] = dzFe/2.;
  cpar[3] = zr * TMath::Tan(kAccMin);
  cpar[4] = zr * TMath::Tan(kAccMax);
  cpar[1] = cpar[3] + TMath::Tan(kAccMin) * dzFe;
  cpar[2] = cpar[4] + TMath::Tan(kAccMax) * dzFe;

  gMC->Gsvolu("ACFE", "CONE",idtmed[fMLayers[0][3]], cpar, 5);

  dz = - (kZRear - kZAbsStart) / 2. + kDRear + dzFe / 2.;

  gMC->Gspos("ACFE", 1, "ACON", 0., 0., dz, 0, "ONLY");

  
  //
  //
  //     carbon cone: carbon
  //
  pcpar[3]   = pcpar[9] - (kZAbsCc - kZAbsStart);
  pcpar[4]   = kZAbsCc * TMath::Tan(kAccMin);
  pcpar[5]   = kZAbsCc * TMath::Tan(kAccMax);
  gMC->Gsvolu("ACAR", "PCON", idtmed[fMLayers[0][1]+40], pcpar, 12);
  gMC->Gspos("ACAR", 1, "ACON", 0., 0., 0., 0, "ONLY");
 //
 //     carbon cone outer region
 //
  cpar[0]  = 10.;
  cpar[3]  = kRAbs;
  cpar[4]  = kZAbsStart * TMath::Tan(kAccMax);
  cpar[1]  = kRAbs;
  cpar[2]  = cpar[4] + 2. * cpar[0] * TMath::Tan(kAccMax);

  gMC->Gsvolu("ACAO", "CONE", idtmed[fMLayers[0][1]], cpar, 5);
  dz= (kZRear-kZAbsStart) / 2. - cpar[0];
  gMC->Gspos("ACAO", 1, "ACAR", 0., 0., dz, 0, "ONLY");
  //
  //     inner W shield
  Float_t epsi  = 0.;
  Float_t repsi = 1.;
  
  zr = kZRear - (kDRear - epsi);
  cpar[0] = (kDRear - epsi) / 2.;
  cpar[3] = zr * TMath::Tan(kAccMin);
  cpar[4] = zr * TMath::Tan(kThetaR * repsi);
  cpar[1] = cpar[3] + TMath::Tan(kAccMin) * (kDRear - epsi);
  cpar[2] = cpar[4] + TMath::Tan(kThetaR * repsi) * (kDRear - epsi);

  gMC->Gsvolu("ARW0", "CONE", idtmed[fMLayers[1][5]+40], cpar, 5);
  dz= - (kZRear - kZAbsStart) / 2. + cpar[0];
  gMC->Gspos("ARW0", 1, "AITR", 0., 0., dz, 0, "ONLY");
  //
  // special W medium for last 5 cm of W
  zr = kZRear - 5;
  cpar[0] = 2.5;
  cpar[3] = zr * TMath::Tan(kAccMin);
  cpar[4] = zr * TMath::Tan(kThetaR * repsi);
  cpar[1] = cpar[3] + TMath::Tan(kAccMin) * 5.;
  cpar[2] = cpar[4] + TMath::Tan(kThetaR*repsi) * 5.;

  gMC->Gsvolu("ARW1", "CONE", idtmed[fMLayers[1][5]+20], cpar, 5);
  dz = - (kDRear-epsi) / 2. + cpar[0];
  gMC->Gspos("ARW1", 1, "ARW0", 0., 0., dz, 0, "ONLY");
  //
  // Cu
  Float_t drMin = TMath::Tan(kThetaR) * 5;
  Float_t drMax = TMath::Tan(kAccMax) * 5;
  gMC->Gsvolu("ARPE", "CONE", idtmed[fMLayers[0][4]], cpar, 0);
  cpar[0] = 2.5;

  for (Int_t i = 0; i < 3; i++) {
      zr = kZRear - kDRear + 5 + i * 10.;
      cpar[3] = zr * TMath::Tan(kThetaR);
      cpar[4] = zr * TMath::Tan(kAccMax);
      cpar[1] = cpar[3] + drMin;
      cpar[2] = cpar[4] + drMax;
      dz = - (kZRear - kZAbsStart) / 2. + cpar[0] + 5. + (2 - i)*10;
      gMC->Gsposp("ARPE", i+1, "AITR", 0., 0., dz, 0, "ONLY",cpar,5);
  }

  gMC->Gspos("AITR", 1, "ABSS", 0., 0., 0., 0, "ONLY");	
  dz = - (kZRear - kZAbsStart) / 2. - kZAbsStart;
  gMC->Gspos("ABSM", 1, "ALIC", 0., 0., dz, 0, "ONLY");	
//
//
// vacuum system
//
// pipe and heating jackets
//
//
// cylindrical piece
  tpar0[2] = (kZOpen-kZAbsStart)/2;
  tpar0[0] = kRVacu;
  tpar0[1] = kRVacu + dTube + dInsu + dEnve;
  gMC->Gsvolu("AV11", "TUBE", idtmed[kSteel+40], tpar0, 3);
//
// insulation

  tpar[2] = tpar0[2];
  tpar[0] = kRVacu  + dTube;
  tpar[1] = tpar[0] + dInsu;
  gMC->Gsvolu("AI11", "TUBE", idtmed[kInsulation+40], tpar, 3);
  gMC->Gspos("AI11", 1, "AV11", 0., 0., 0., 0, "ONLY"); 
//
  dz = (kZRear - kZAbsStart) / 2. - tpar0[2];
  gMC->Gspos("AV11", 1, "ABSM", 0., 0., dz, 0, "ONLY"); 
//
// conical piece

  cpar0[0] = (kZRear - kDRear - kZOpen) / 2.;
  cpar0[3] = kRVacu - 0.05;
  cpar0[4] = kRVacu + dTube + dInsu + dEnve;
  Float_t dR = 2. * cpar0[0] * TMath::Tan(kThetaOpen1);
  cpar0[1]=cpar0[3] + dR;
  cpar0[2]=cpar0[4] + dR;
  gMC->Gsvolu("AV21", "CONE", idtmed[kSteel+40], cpar0, 5);
  dTube += 0.05;

//
// insulation
  cpar[0] = cpar0[0];
  cpar[1] = cpar0[1] + dTube;
  cpar[2] = cpar0[1] + dTube + dInsu;
  cpar[3] = cpar0[3] + dTube;
  cpar[4] = cpar0[3] + dTube + dInsu;

  gMC->Gsvolu("AI21", "CONE", idtmed[kInsulation+40], cpar, 5);
  gMC->Gspos("AI21", 1, "AV21", 0., 0., 0., 0, "ONLY"); 
  
  dz = - (kZRear - kZAbsStart) / 2. + cpar0[0] + kDRear;
  gMC->Gspos("AV21", 1, "ABSM", 0., 0., dz, 0, "ONLY"); 
////////////////////////////////////////////////////
//                                                // 
//    Front Absorber Support Structure FASS       // 
//                                                //
//    Drawing ALIP2A__0035                        //
//    Drawing ALIP2A__0089                        //
//    Drawing ALIP2A__0090                        //
//    Drawing ALIP2A__0109                        //
////////////////////////////////////////////////////
  TGeoTranslation* vec0 = new TGeoTranslation(0., 0., 0.);
  
  TGeoVolumeAssembly* voFass   = new TGeoVolumeAssembly("Fass");
  const Float_t kDegRad        = TMath::Pi() / 180.;
  const TGeoMedium* kMedSteel  = gGeoManager->GetMedium("ABSO_ST_C0");
  const TGeoMedium* kMedAlu    = gGeoManager->GetMedium("ABSO_ALU_C0");
  
  const Float_t kFassUBFlangeH = 380.;
  const Float_t kFassUBFlangeW =  77.;
  
  const Float_t kFassUMFlangeH = 380.;
  const Float_t kFassUMFlangeB = 246.;
  const Float_t kFassUMFlangeT =  10.;
  const Float_t kFassUMFalpha  = - TMath::ATan((kFassUMFlangeB-kFassUMFlangeT)/ kFassUMFlangeH / 2.) / kDegRad;      
// Upper back   flange
// B1
// 380 x 77
  TGeoVolume* voFassUBFlange = new TGeoVolume("FassUBFlange", new TGeoBBox(kFassUBFlangeW/2., 
									   kFassUBFlangeH/2., 3./2.), kMedSteel);
  voFass->AddNode(voFassUBFlange, 1, new TGeoTranslation(+1.5 + kFassUBFlangeW/2., 
							 180. + kFassUBFlangeH/2.,
							 kFassUMFlangeB - 1.5));
  voFass->AddNode(voFassUBFlange, 2, new TGeoTranslation(-1.5 - kFassUBFlangeW/2., 
							 180. + kFassUBFlangeH/2.,
							 kFassUMFlangeB - 1.5));
  
  
// Lower back   flange
// Upper median flange
//    Drawing ALIP2A__0090                        //
//    Drawing ALIP2A__0089                        //
//    A2
  
  TGeoVolume* voFassUMFlange = new TGeoVolume("FassUMFlange", 
					      new TGeoTrap(kFassUMFlangeH/2., kFassUMFalpha,  
							   0., 1.5, 
							   kFassUMFlangeB/2., kFassUMFlangeB/2.,
							   0., 1.5, 
							   kFassUMFlangeT/2., kFassUMFlangeT/2.,
							   0.), kMedSteel);
  
  TGeoRotation* rotFass1 = new TGeoRotation("rotFass1", 180., 0., 90., 0., 90., 90.);
  voFass->AddNode(voFassUMFlange,1 , 
		  new TGeoCombiTrans(0., 180. + kFassUMFlangeH/2., -(kFassUMFlangeB+kFassUMFlangeT)/4. + kFassUMFlangeB, 
				     rotFass1));
  
  
// Lower median flange
//    Drawing ALIP2A__0090                        //
//    Drawing ALIP2A__0089                        //
//    A1
  const Float_t kFassLMFlangeH = 242.;
  const Float_t kFassLMFlangeB = 246.;
  const Float_t kFassLMFlangeT =  43.;
  const Float_t kFassLMFalpha  = - TMath::ATan((kFassLMFlangeB-kFassLMFlangeT)/ kFassLMFlangeH / 2.) / kDegRad;
  TGeoVolume* voFassLMFlange = new TGeoVolume("FassLMFlange", 
					      new TGeoTrap(kFassLMFlangeH/2., kFassLMFalpha,  
							   0., 1.5, 
							   kFassLMFlangeB/2., kFassLMFlangeB/2.,
							   0., 1.5, 
							   kFassLMFlangeT/2., kFassLMFlangeT/2.,
							   0.), kMedSteel);
  TGeoRotation* rotFass2 = new TGeoRotation("rotFass2", 180., 0., 90., 0., 90., 270.);
  voFass->AddNode(voFassLMFlange, 1, 
		  new TGeoCombiTrans(0., -180. - kFassLMFlangeH/2., -(kFassLMFlangeB+kFassLMFlangeT)/4. + kFassLMFlangeB, 
				     rotFass2));
  
// Stiffeners
// Support Plate
//
// Central cone
  TGeoPgon* shFassCone = new TGeoPgon(22.5, 360., 8, 4);
  shFassCone->DefineSection(0,   0.,   0., 180.);
  shFassCone->DefineSection(1,   3.,   0., 180.);
  shFassCone->DefineSection(2,   3., 177., 180.);
  shFassCone->DefineSection(3, 246., 177., 180.);
  shFassCone->SetName("FassCone");
  
  TGeoBBox* shFassWindow = new TGeoBBox( 190., 53., 28.);
  shFassWindow->SetName("FassWindow");
  TGeoTranslation* tFassWindow = new TGeoTranslation("tFassWindow", 0., 0., 78.);
  tFassWindow->RegisterYourself();
  
  TGeoTube* shFassApperture = new TGeoTube(0., 104., 3.01);
  shFassApperture->SetName("FassApperture");
  
  TGeoCompositeShape* shFassCentral = 
      new TGeoCompositeShape("shFassCentral", "FassCone-(FassWindow:tFassWindow+FassApperture)");
  
  TGeoVolume* voFassCentral = new TGeoVolume("FassCentral", shFassCentral, kMedSteel);
  voFass->AddNode(voFassCentral, 1, vec0);
  
//
// Aluminum ring
//
  TGeoVolume* voFassAlRing = new TGeoVolume("FassAlRing", new TGeoTube(100., 180., 10.), kMedAlu);
  voFass->AddNode(voFassAlRing, 1, new TGeoTranslation(0., 0., -11.));
  TGeoRotation* rotxz = new TGeoRotation("rotxz",  90., 0., 90., 90., 180., 0.);
  gGeoManager->GetVolume("ALIC")->AddNode(voFass, 1, new TGeoCombiTrans(0., 0., -388.45 - 90., rotxz));
}

//_____________________________________________________________________________

void AliABSOv0::Init()
{
  //
  // Initialisation of the muon absorber after it has been built
  Int_t i;
  //
  if(AliLog::GetGlobalDebugLevel()>0) {
    printf("\n%s: ",ClassName());
    for(i=0;i<35;i++) printf("*");
    printf(" ABSOv0_INIT ");
    for(i=0;i<35;i++) printf("*");
    printf("\n%s: ",ClassName());
    //
    for(i=0;i<80;i++) printf("*");
    printf("\n");
  }
}
Commit	Line	Data
43d014f0	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
eeacf08b	16	/* $Id$ */
43d014f0	17
	18	///////////////////////////////////////////////////////////////////////////////
	19	// //
	20	// Muon ABSOrber //
	21	// This class contains the description of the muon absorber geometry //
	22	// //
	23	//Begin_Html
	24	/*
	25	<img src="picts/AliABSOClass.gif">
	26	</pre>
	27	<br clear=left>
	28	<font size=+2 color=red>
	29	<p>The responsible person for this module is
	30	<a href="mailto:andreas.morsch@cern.ch">Andreas Morsch</a>.
	31	</font>
	32	<pre>
	33	*/
	34	//End_Html
	35	// //
	36	// //
	37	///////////////////////////////////////////////////////////////////////////////
	38
88cb7938	39	#include <TVirtualMC.h>
84e91a25	40	#include <TGeoManager.h>
	41	#include <TGeoVolume.h>
	42	#include <TGeoMatrix.h>
	43	#include <TGeoCompositeShape.h>
	44	#include <TGeoBBox.h>
	45	#include <TGeoXtru.h>
	46	#include <TGeoTube.h>
	47	#include <TGeoPgon.h>
	48	#include <TGeoArb8.h>
	49	#include <TGeoMedium.h>
88cb7938	50
43d014f0	51	#include "AliABSOv0.h"
43d014f0	52	#include "AliConst.h"
88cb7938	53	#include "AliRun.h"
4951e003	54	#include "AliLog.h"
b2ef5f06	55
43d014f0	56	ClassImp(AliABSOv0)
	57
	58	//_____________________________________________________________________________
	59	AliABSOv0::AliABSOv0()
	60	{
	61	//
	62	// Default constructor
	63	//
	64	}
	65
	66	//_____________________________________________________________________________
	67	AliABSOv0::AliABSOv0(const char name, const char title)
	68	: AliABSO(name,title)
	69	{
	70	//
	71	// Standard constructor
	72	//
43d014f0	73	}
	74
	75	//_____________________________________________________________________________
	76	void AliABSOv0::CreateGeometry()
	77	{
b2ef5f06	78	//
	79	// Creation of the geometry of the muon absorber
	80	//
	81	//Begin_Html
	82	/*
	83	<img src="picts/AliABSOv0Tree.gif">
	84	*/
	85	//End_Html
	86	//Begin_Html
	87	/*
	88	<img src="picts/AliABSOv0.gif">
	89	*/
	90	//End_Html
	91
	92	//
	93	//
56f14ac2	94
56f14ac2	95	enum {kC=1605, kAl=1608, kFe=1609, kCu=1610, kW=1611, kPb=1612,
77976fd8	96	kNiCuW=1620, kVacuum=1615, kAir=1614, kConcrete=1616,
84e91a25	97	kPolyCH2=1617, kSteel=1618, kInsulation=1613, kPolyCc=1619};
b2ef5f06	98
b2ef5f06	99	Int_t *idtmed = fIdtmed->GetArray()-1599;
43d014f0	100
b2ef5f06	101	Float_t par[24], cpar[5], cpar0[5], pcpar[12], tpar[3], tpar0[3];
b2ef5f06	102	Float_t dz;
b2ef5f06	103	#include "ABSOSHILConst.h"
b2ef5f06	104	#include "ABSOConst.h"
381ec9af	105	//
	106	// Structure of Tracking Region
	107	//
	108	Float_t dzFe = 25.;
	109
	110	// 3 < theta < 9
	111	fNLayers[0] = 5;
dbbe5bc1	112	fMLayers[0][0] = kAir; fZLayers[0][0] = kZAbsStart;
dbbe5bc1	113	fMLayers[0][1] = kC; fZLayers[0][1] = kZAbsCc;
50ad31cc	114	fMLayers[0][2] = kConcrete; fZLayers[0][2] = kZRear - kDRear - dzFe;
50ad31cc	115	fMLayers[0][3] = kSteel; fZLayers[0][3] = kZRear - kDRear;
dbbe5bc1	116	fMLayers[0][4] = kSteel; fZLayers[0][4] = kZRear;
381ec9af	117	// 2 < theta < 3
dbbe5bc1	118	fNLayers[1] = 6;
dbbe5bc1	119
50ad31cc	120	fMLayers[1][0] = kAir ; fZLayers[1][0] = fZLayers[0][0] - 10.;
dbbe5bc1	121	fMLayers[1][1] = kAl ; fZLayers[1][1] = fZLayers[0][0];
	122	fMLayers[1][2] = fMLayers[0][1]; fZLayers[1][2] = fZLayers[0][1];
	123	fMLayers[1][3] = fMLayers[0][2]; fZLayers[1][3] = fZLayers[0][2];
	124	fMLayers[1][4] = fMLayers[0][3]; fZLayers[1][4] = fZLayers[0][3];
b14ff348	125	fMLayers[1][5] = kNiCuW; fZLayers[1][5] = fZLayers[0][4];
381ec9af	126	//
381ec9af	127
50ad31cc	128	Float_t dTube = 0.1; // tube thickness
	129	Float_t dInsu = 0.5; // insulation thickness
	130	Float_t dEnve = 0.1; // protective envelope thickness
b2ef5f06	131
	132
	133	// Mother volume and outer shielding: Pb
43d014f0	134	par[0] = 0.;
	135	par[1] = 360.;
	136	par[2] = 7.;
b2ef5f06	137
50ad31cc	138	par[21] = (kZRear - kZAbsStart) / 2.;
	139	par[22] = kRAbs;
	140	par[23] = kZAbsStart * TMath::Tan(kTheta1);
43d014f0	141
50ad31cc	142	par[18] = par[21] - (kZNose - kZAbsStart);
	143	par[19] = kRAbs;
	144	par[20] = kZNose * TMath::Tan(kTheta1);
43d014f0	145
50ad31cc	146	par[15] = par[21] - (kZConeTPC - kZAbsStart);
	147	par[16] = kRAbs;
	148	par[17] = par[20] - (par[15] - par[18]) * TMath::Tan(kTheta2);
43d014f0	149
50ad31cc	150	par[12] = par[21] - (kZOpen - kZAbsStart);
dbbe5bc1	151	par[13] = kRAbs;
50ad31cc	152	par[14] = par[17] - (par[12] - par[15]) * TMath::Tan(kAccMax);
43d014f0	153
50ad31cc	154	par[9] = par[21] - (kZRear - kDRear - kZAbsStart);
	155	par[10] = kRAbs - (par[9] - par[12]) * TMath::Tan(kThetaOpen1) ;
	156	par[11] = par[14] - (par[9] - par[12]) * TMath::Tan(kAccMax);
43d014f0	157
50ad31cc	158	par[6] = par[21] - (kZRear - kDRear - kZAbsStart);
	159	par[7] = (kZRear - kDRear) * TMath::Tan(kAccMin);
	160	par[8] = par[14] - (par[6] - par[12]) * TMath::Tan(kAccMax);
43d014f0	161
50ad31cc	162	par[3] = - par[21];
	163	par[4] = kZRear * TMath::Tan(kAccMin);
	164	par[5] = par[8] - (par[3] - par[6]) * TMath::Tan(kAccMax);
7c8f009e	165	gMC->Gsvolu("ABSS", "PCON", idtmed[kPb+40], par, 24);
50ad31cc	166
	167	for (Int_t i = 22; i > 7; i -= 3) par[i] = 0;
	168
b2ef5f06	169	gMC->Gsvolu("ABSM", "PCON", idtmed[kVacuum+40], par, 24);
43d014f0	170	gMC->Gspos("ABSS", 1, "ABSM", 0., 0., 0., 0, "ONLY");
	171
	172	//
	173	// Steel envelope
	174	//
50ad31cc	175	par[4] = par[5] - kDSteel;
	176	par[7] = par[8] - kDSteel;
	177	par[10]= par[11] - kDSteel;
	178	par[13]= par[14] - kDSteel;
	179	par[16]= par[17] - kDSteel;
	180	par[19]= par[20] - kDSteel;
	181	par[22]= par[23] - kDSteel;
	182
b2ef5f06	183	gMC->Gsvolu("ABST", "PCON", idtmed[kSteel], par, 24);
43d014f0	184	gMC->Gspos("ABST", 1, "ABSS", 0., 0., 0., 0, "ONLY");
	185	//
	186	// Polyethylene shield
	187	//
dbbe5bc1	188	cpar[0] = (kZRear - kZConeTPC) / 2.;
50ad31cc	189	cpar[1] = kZRear * TMath::Tan(kAccMax);
dbbe5bc1	190	cpar[2] = cpar[1] + kDPoly;
50ad31cc	191	cpar[3] = kZConeTPC * TMath::Tan(kAccMax);
dbbe5bc1	192	cpar[4] = cpar[3] + kDPoly;
50ad31cc	193
b2ef5f06	194	gMC->Gsvolu("APOL", "CONE", idtmed[kPolyCH2+40], cpar, 5);
50ad31cc	195	dz = - (kZRear - kZAbsStart) / 2. + cpar[0];
43d014f0	196	gMC->Gspos("APOL", 1, "ABSS", 0., 0., dz, 0, "ONLY");
	197
	198	//
	199	// Tungsten nose to protect TPC
	200	//
dbbe5bc1	201	cpar[0] = (kZNose - kZAbsStart) / 2.;
50ad31cc	202	cpar[1] = kZNose * TMath::Tan(kAccMax);
	203	cpar[2] = kZNose * TMath::Tan(kTheta1) - kDSteel;
	204	cpar[3] = kZAbsStart * TMath::Tan(kAccMax);
	205	cpar[4] = kZAbsStart * TMath::Tan(kTheta1) - kDSteel;
	206
84e91a25	207	gMC->Gsvolu("ANOS", "CONE", idtmed[kNiCuW], cpar, 5);
8f657ed5	208	//
50ad31cc	209	dz = (kZRear - kZAbsStart) / 2. - cpar[0];
43d014f0	210	gMC->Gspos("ANOS", 1, "ABSS", 0., 0., dz, 0, "ONLY");
8f657ed5	211	//
	212	// Tungsten inner shield
	213	//
50ad31cc	214	Float_t zW = kZTwoDeg + .1;
50ad31cc	215	Float_t dZ = zW + (kZRear - kDRear - zW) / 2.;
43d014f0	216	//
b2ef5f06	217	pcpar[0] = 0.;
	218	pcpar[1] = 360.;
	219	pcpar[2] = 3.;
50ad31cc	220	pcpar[9] = - (zW - dZ);
	221	pcpar[10] = kRAbs;
	222	pcpar[11] = zW * TMath::Tan(kAccMin);
	223	pcpar[6] = - (kZOpen - dZ);
dbbe5bc1	224	pcpar[7] = kRAbs;
dbbe5bc1	225	pcpar[8] = kZOpen * TMath::Tan(kAccMin);
50ad31cc	226	pcpar[3] = - (kZRear - kDRear - dZ);
	227	pcpar[4] = kRAbs + (kZRear - kDRear - kZOpen) * TMath::Tan(kThetaOpen1);
	228	pcpar[5] = (kZRear - kDRear) * TMath::Tan(kAccMin);
b2ef5f06	229
b2ef5f06	230	gMC->Gsvolu("AWIN", "PCON", idtmed[kNiCuW+40], pcpar, 12);
50ad31cc	231	dz = -(zW + kZRear - kDRear) / 2 + (kZAbsStart + kZRear) / 2.;
43d014f0	232	gMC->Gspos("AWIN", 1, "ABSS", 0., 0., dz, 0, "ONLY");
8f657ed5	233	//
	234	// First part replaced by Carbon
	235	//
513b07d0	236	cpar[0] = (200.-zW)/2.;
50ad31cc	237
dbbe5bc1	238	cpar[1] = kRAbs;
50ad31cc	239	cpar[2] = 200. * TMath::Tan(kAccMin);
dbbe5bc1	240	cpar[3] = kRAbs;
50ad31cc	241	cpar[4] = pcpar[11];
50ad31cc	242
513b07d0	243	gMC->Gsvolu("ACNO", "CONE", idtmed[kC], cpar, 5);
50ad31cc	244	dz = - (zW - dZ+cpar[0]);
513b07d0	245	gMC->Gspos("ACNO", 1, "AWIN", 0., 0., dz, 0, "ONLY");
8f657ed5	246
8f657ed5	247	/*
ba47c054	248	Float_t zWW = 383.5;
dbbe5bc1	249	cpar[0] = (kZRear-kDRear-zWW)/2.;
	250	cpar[1] = kRAbs + (zWW-kZOpen) * TMath::Tan(kThetaOpen1);
	251	cpar[2] = zWW * TMath::Tan(kAccMin);
8f657ed5	252	cpar[3] = pcpar[10];
	253	cpar[4] = pcpar[11];
	254	gMC->Gsvolu("AWNO", "CONE", idtmed[kCu+40], cpar, 5);
	255	dz = zWW-dZ+cpar[0];
	256
	257	gMC->Gspos("AWNO", 1, "AWIN", 0., 0., dz, 0, "ONLY");
	258	*/
	259	//
43d014f0	260	// Inner tracking region
43d014f0	261	//
43d014f0	262	//
8f657ed5	263	//
43d014f0	264	pcpar[0] = 0.;
	265	pcpar[1] = 360.;
	266	pcpar[2] = 3.;
50ad31cc	267	pcpar[9] = (kZRear - kZAbsStart) / 2.;
	268	pcpar[10] = kRAbs;
	269	pcpar[11] = kZAbsStart * TMath::Tan(kAccMax);
	270	pcpar[6] = pcpar[9] - (kZTwoDeg - kZAbsStart);
dbbe5bc1	271	pcpar[7] = kRAbs;
dbbe5bc1	272	pcpar[8] = kZTwoDeg * TMath::Tan(kAccMax);
50ad31cc	273	pcpar[3] = - pcpar[9];
	274	pcpar[4] = kZRear * TMath::Tan(kAccMin);
	275	pcpar[5] = kZRear * TMath::Tan(kAccMax);
381ec9af	276	gMC->Gsvolu("AITR", "PCON", idtmed[fMLayers[0][4]], pcpar, 12);
43d014f0	277	//
43d014f0	278	// special Pb medium for last 5 cm of Pb
50ad31cc	279	Float_t zr = kZRear - 2. - 0.001;
b2ef5f06	280	cpar[0] = 1.0;
50ad31cc	281	cpar[3] = zr * TMath::Tan(kThetaR);
	282	cpar[4] = zr * TMath::Tan(kAccMax);
	283	cpar[1] = cpar[3] + TMath::Tan(kThetaR) * 2;
	284	cpar[2] = cpar[4] + TMath::Tan(kAccMax) * 2;
	285
381ec9af	286	gMC->Gsvolu("ARPB", "CONE", idtmed[fMLayers[0][4]], cpar, 5);
50ad31cc	287	dz= - (kZRear - kZAbsStart) / 2. + cpar[0] - 0.001;
43d014f0	288	gMC->Gspos("ARPB", 1, "AITR", 0., 0., dz, 0, "ONLY");
43d014f0	289	//
	290	// concrete cone: concrete
	291	//
50ad31cc	292	pcpar[3] = pcpar[9] - (kZRear - kDRear - kZAbsStart);
	293	pcpar[4] = (kZRear-kDRear) * TMath::Tan(kAccMin);
	294	pcpar[5] = (kZRear-kDRear) * TMath::Tan(kAccMax);
381ec9af	295	gMC->Gsvolu("ACON", "PCON", idtmed[fMLayers[0][2]+40], pcpar, 12);
43d014f0	296	gMC->Gspos("ACON", 1, "AITR", 0., 0., 0., 0, "ONLY");
381ec9af	297	//
	298	// Fe Cone
	299	//
50ad31cc	300	zr = kZRear - kDRear - dzFe;
	301
	302	cpar[0] = dzFe/2.;
	303	cpar[3] = zr * TMath::Tan(kAccMin);
	304	cpar[4] = zr * TMath::Tan(kAccMax);
	305	cpar[1] = cpar[3] + TMath::Tan(kAccMin) * dzFe;
	306	cpar[2] = cpar[4] + TMath::Tan(kAccMax) * dzFe;
	307
381ec9af	308	gMC->Gsvolu("ACFE", "CONE",idtmed[fMLayers[0][3]], cpar, 5);
381ec9af	309
50ad31cc	310	dz = - (kZRear - kZAbsStart) / 2. + kDRear + dzFe / 2.;
381ec9af	311
	312	gMC->Gspos("ACFE", 1, "ACON", 0., 0., dz, 0, "ONLY");
	313
	314
	315	//
43d014f0	316	//
	317	// carbon cone: carbon
	318	//
50ad31cc	319	pcpar[3] = pcpar[9] - (kZAbsCc - kZAbsStart);
	320	pcpar[4] = kZAbsCc * TMath::Tan(kAccMin);
	321	pcpar[5] = kZAbsCc * TMath::Tan(kAccMax);
381ec9af	322	gMC->Gsvolu("ACAR", "PCON", idtmed[fMLayers[0][1]+40], pcpar, 12);
43d014f0	323	gMC->Gspos("ACAR", 1, "ACON", 0., 0., 0., 0, "ONLY");
b2ef5f06	324	//
	325	// carbon cone outer region
	326	//
	327	cpar[0] = 10.;
dbbe5bc1	328	cpar[3] = kRAbs;
50ad31cc	329	cpar[4] = kZAbsStart * TMath::Tan(kAccMax);
	330	cpar[1] = kRAbs;
	331	cpar[2] = cpar[4] + 2. * cpar[0] * TMath::Tan(kAccMax);
b2ef5f06	332
381ec9af	333	gMC->Gsvolu("ACAO", "CONE", idtmed[fMLayers[0][1]], cpar, 5);
50ad31cc	334	dz= (kZRear-kZAbsStart) / 2. - cpar[0];
b2ef5f06	335	gMC->Gspos("ACAO", 1, "ACAR", 0., 0., dz, 0, "ONLY");
43d014f0	336	//
43d014f0	337	// inner W shield
50ad31cc	338	Float_t epsi = 0.;
50ad31cc	339	Float_t repsi = 1.;
b2ef5f06	340
50ad31cc	341	zr = kZRear - (kDRear - epsi);
	342	cpar[0] = (kDRear - epsi) / 2.;
	343	cpar[3] = zr * TMath::Tan(kAccMin);
	344	cpar[4] = zr * TMath::Tan(kThetaR * repsi);
	345	cpar[1] = cpar[3] + TMath::Tan(kAccMin) * (kDRear - epsi);
	346	cpar[2] = cpar[4] + TMath::Tan(kThetaR * repsi) * (kDRear - epsi);
	347
b14ff348	348	gMC->Gsvolu("ARW0", "CONE", idtmed[fMLayers[1][5]+40], cpar, 5);
50ad31cc	349	dz= - (kZRear - kZAbsStart) / 2. + cpar[0];
43d014f0	350	gMC->Gspos("ARW0", 1, "AITR", 0., 0., dz, 0, "ONLY");
	351	//
	352	// special W medium for last 5 cm of W
50ad31cc	353	zr = kZRear - 5;
43d014f0	354	cpar[0] = 2.5;
50ad31cc	355	cpar[3] = zr * TMath::Tan(kAccMin);
	356	cpar[4] = zr * TMath::Tan(kThetaR * repsi);
	357	cpar[1] = cpar[3] + TMath::Tan(kAccMin) * 5.;
	358	cpar[2] = cpar[4] + TMath::Tan(kThetaRrepsi) 5.;
	359
b14ff348	360	gMC->Gsvolu("ARW1", "CONE", idtmed[fMLayers[1][5]+20], cpar, 5);
50ad31cc	361	dz = - (kDRear-epsi) / 2. + cpar[0];
43d014f0	362	gMC->Gspos("ARW1", 1, "ARW0", 0., 0., dz, 0, "ONLY");
43d014f0	363	//
381ec9af	364	// Cu
50ad31cc	365	Float_t drMin = TMath::Tan(kThetaR) * 5;
50ad31cc	366	Float_t drMax = TMath::Tan(kAccMax) * 5;
381ec9af	367	gMC->Gsvolu("ARPE", "CONE", idtmed[fMLayers[0][4]], cpar, 0);
50ad31cc	368	cpar[0] = 2.5;
	369
	370	for (Int_t i = 0; i < 3; i++) {
	371	zr = kZRear - kDRear + 5 + i * 10.;
	372	cpar[3] = zr * TMath::Tan(kThetaR);
	373	cpar[4] = zr * TMath::Tan(kAccMax);
	374	cpar[1] = cpar[3] + drMin;
	375	cpar[2] = cpar[4] + drMax;
	376	dz = - (kZRear - kZAbsStart) / 2. + cpar[0] + 5. + (2 - i)*10;
	377	gMC->Gsposp("ARPE", i+1, "AITR", 0., 0., dz, 0, "ONLY",cpar,5);
	378	}
	379
43d014f0	380	gMC->Gspos("AITR", 1, "ABSS", 0., 0., 0., 0, "ONLY");
50ad31cc	381	dz = - (kZRear - kZAbsStart) / 2. - kZAbsStart;
43d014f0	382	gMC->Gspos("ABSM", 1, "ALIC", 0., 0., dz, 0, "ONLY");
	383	//
	384	//
	385	// vacuum system
	386	//
	387	// pipe and heating jackets
	388	//
	389	//
	390	// cylindrical piece
50ad31cc	391	tpar0[2] = (kZOpen-kZAbsStart)/2;
	392	tpar0[0] = kRVacu;
	393	tpar0[1] = kRVacu + dTube + dInsu + dEnve;
b2ef5f06	394	gMC->Gsvolu("AV11", "TUBE", idtmed[kSteel+40], tpar0, 3);
43d014f0	395	//
43d014f0	396	// insulation
b2ef5f06	397
50ad31cc	398	tpar[2] = tpar0[2];
	399	tpar[0] = kRVacu + dTube;
	400	tpar[1] = tpar[0] + dInsu;
b2ef5f06	401	gMC->Gsvolu("AI11", "TUBE", idtmed[kInsulation+40], tpar, 3);
43d014f0	402	gMC->Gspos("AI11", 1, "AV11", 0., 0., 0., 0, "ONLY");
b2ef5f06	403	//
50ad31cc	404	dz = (kZRear - kZAbsStart) / 2. - tpar0[2];
43d014f0	405	gMC->Gspos("AV11", 1, "ABSM", 0., 0., dz, 0, "ONLY");
43d014f0	406	//
43d014f0	407	// conical piece
b2ef5f06	408
50ad31cc	409	cpar0[0] = (kZRear - kDRear - kZOpen) / 2.;
	410	cpar0[3] = kRVacu - 0.05;
	411	cpar0[4] = kRVacu + dTube + dInsu + dEnve;
	412	Float_t dR = 2. * cpar0[0] * TMath::Tan(kThetaOpen1);
	413	cpar0[1]=cpar0[3] + dR;
	414	cpar0[2]=cpar0[4] + dR;
b2ef5f06	415	gMC->Gsvolu("AV21", "CONE", idtmed[kSteel+40], cpar0, 5);
50ad31cc	416	dTube += 0.05;
b2ef5f06	417
43d014f0	418	//
43d014f0	419	// insulation
50ad31cc	420	cpar[0] = cpar0[0];
	421	cpar[1] = cpar0[1] + dTube;
	422	cpar[2] = cpar0[1] + dTube + dInsu;
	423	cpar[3] = cpar0[3] + dTube;
	424	cpar[4] = cpar0[3] + dTube + dInsu;
	425
b2ef5f06	426	gMC->Gsvolu("AI21", "CONE", idtmed[kInsulation+40], cpar, 5);
43d014f0	427	gMC->Gspos("AI21", 1, "AV21", 0., 0., 0., 0, "ONLY");
43d014f0	428
50ad31cc	429	dz = - (kZRear - kZAbsStart) / 2. + cpar0[0] + kDRear;
43d014f0	430	gMC->Gspos("AV21", 1, "ABSM", 0., 0., dz, 0, "ONLY");
84e91a25	431	////////////////////////////////////////////////////
	432	// //
	433	// Front Absorber Support Structure FASS //
	434	// //
	435	// Drawing ALIP2A__0035 //
	436	// Drawing ALIP2A__0089 //
	437	// Drawing ALIP2A__0090 //
	438	// Drawing ALIP2A__0109 //
	439	////////////////////////////////////////////////////
	440	TGeoTranslation* vec0 = new TGeoTranslation(0., 0., 0.);
	441
	442	TGeoVolumeAssembly* voFass = new TGeoVolumeAssembly("Fass");
	443	const Float_t kDegRad = TMath::Pi() / 180.;
	444	const TGeoMedium* kMedSteel = gGeoManager->GetMedium("ABSO_ST_C0");
	445	const TGeoMedium* kMedAlu = gGeoManager->GetMedium("ABSO_ALU_C0");
	446
	447	const Float_t kFassUBFlangeH = 380.;
	448	const Float_t kFassUBFlangeW = 77.;
	449
	450	const Float_t kFassUMFlangeH = 380.;
	451	const Float_t kFassUMFlangeB = 246.;
	452	const Float_t kFassUMFlangeT = 10.;
	453	const Float_t kFassUMFalpha = - TMath::ATan((kFassUMFlangeB-kFassUMFlangeT)/ kFassUMFlangeH / 2.) / kDegRad;
	454	// Upper back flange
	455	// B1
	456	// 380 x 77
	457	TGeoVolume* voFassUBFlange = new TGeoVolume("FassUBFlange", new TGeoBBox(kFassUBFlangeW/2.,
	458	kFassUBFlangeH/2., 3./2.), kMedSteel);
	459	voFass->AddNode(voFassUBFlange, 1, new TGeoTranslation(+1.5 + kFassUBFlangeW/2.,
	460	180. + kFassUBFlangeH/2.,
	461	kFassUMFlangeB - 1.5));
	462	voFass->AddNode(voFassUBFlange, 2, new TGeoTranslation(-1.5 - kFassUBFlangeW/2.,
	463	180. + kFassUBFlangeH/2.,
	464	kFassUMFlangeB - 1.5));
	465
	466
	467	// Lower back flange
	468	// Upper median flange
	469	// Drawing ALIP2A__0090 //
	470	// Drawing ALIP2A__0089 //
	471	// A2
	472
	473	TGeoVolume* voFassUMFlange = new TGeoVolume("FassUMFlange",
	474	new TGeoTrap(kFassUMFlangeH/2., kFassUMFalpha,
	475	0., 1.5,
	476	kFassUMFlangeB/2., kFassUMFlangeB/2.,
	477	0., 1.5,
	478	kFassUMFlangeT/2., kFassUMFlangeT/2.,
	479	0.), kMedSteel);
	480
	481	TGeoRotation* rotFass1 = new TGeoRotation("rotFass1", 180., 0., 90., 0., 90., 90.);
	482	voFass->AddNode(voFassUMFlange,1 ,
	483	new TGeoCombiTrans(0., 180. + kFassUMFlangeH/2., -(kFassUMFlangeB+kFassUMFlangeT)/4. + kFassUMFlangeB,
	484	rotFass1));
	485
	486
	487	// Lower median flange
	488	// Drawing ALIP2A__0090 //
	489	// Drawing ALIP2A__0089 //
	490	// A1
	491	const Float_t kFassLMFlangeH = 242.;
	492	const Float_t kFassLMFlangeB = 246.;
	493	const Float_t kFassLMFlangeT = 43.;
	494	const Float_t kFassLMFalpha = - TMath::ATan((kFassLMFlangeB-kFassLMFlangeT)/ kFassLMFlangeH / 2.) / kDegRad;
495	TGeoVolume* voFassLMFlange = new TGeoVolume("FassLMFlange",
496	new TGeoTrap(kFassLMFlangeH/2., kFassLMFalpha,
497	0., 1.5,
498	kFassLMFlangeB/2., kFassLMFlangeB/2.,
499	0., 1.5,
500	kFassLMFlangeT/2., kFassLMFlangeT/2.,
501	0.), kMedSteel);
502	TGeoRotation* rotFass2 = new TGeoRotation("rotFass2", 180., 0., 90., 0., 90., 270.);
503	voFass->AddNode(voFassLMFlange, 1,
504	new TGeoCombiTrans(0., -180. - kFassLMFlangeH/2., -(kFassLMFlangeB+kFassLMFlangeT)/4. + kFassLMFlangeB,
505	rotFass2));
506
507	// Stiffeners
508	// Support Plate
381ec9af	509	//
84e91a25	510	// Central cone
	511	TGeoPgon* shFassCone = new TGeoPgon(22.5, 360., 8, 4);
	512	shFassCone->DefineSection(0, 0., 0., 180.);
	513	shFassCone->DefineSection(1, 3., 0., 180.);
	514	shFassCone->DefineSection(2, 3., 177., 180.);
	515	shFassCone->DefineSection(3, 246., 177., 180.);
	516	shFassCone->SetName("FassCone");
381ec9af	517
84e91a25	518	TGeoBBox* shFassWindow = new TGeoBBox( 190., 53., 28.);
	519	shFassWindow->SetName("FassWindow");
	520	TGeoTranslation* tFassWindow = new TGeoTranslation("tFassWindow", 0., 0., 78.);
	521	tFassWindow->RegisterYourself();
381ec9af	522
5edc6a19	523	TGeoTube* shFassApperture = new TGeoTube(0., 104., 3.01);
84e91a25	524	shFassApperture->SetName("FassApperture");
513b07d0	525
84e91a25	526	TGeoCompositeShape* shFassCentral =
	527	new TGeoCompositeShape("shFassCentral", "FassCone-(FassWindow:tFassWindow+FassApperture)");
	528
	529	TGeoVolume* voFassCentral = new TGeoVolume("FassCentral", shFassCentral, kMedSteel);
	530	voFass->AddNode(voFassCentral, 1, vec0);
	531
	532	//
	533	// Aluminum ring
	534	//
	535	TGeoVolume* voFassAlRing = new TGeoVolume("FassAlRing", new TGeoTube(100., 180., 10.), kMedAlu);
	536	voFass->AddNode(voFassAlRing, 1, new TGeoTranslation(0., 0., -11.));
	537	TGeoRotation* rotxz = new TGeoRotation("rotxz", 90., 0., 90., 90., 180., 0.);
c5aa46e0	538	gGeoManager->GetVolume("ALIC")->AddNode(voFass, 1, new TGeoCombiTrans(0., 0., -388.45 - 90., rotxz));
43d014f0	539	}
	540
	541	//_____________________________________________________________________________
	542
	543	void AliABSOv0::Init()
	544	{
	545	//
	546	// Initialisation of the muon absorber after it has been built
	547	Int_t i;
	548	//
4951e003	549	if(AliLog::GetGlobalDebugLevel()>0) {
9e1a0ddb	550	printf("\n%s: ",ClassName());
	551	for(i=0;i<35;i++) printf("*");
	552	printf(" ABSOv0_INIT ");
	553	for(i=0;i<35;i++) printf("*");
	554	printf("\n%s: ",ClassName());
	555	//
	556	for(i=0;i<80;i++) printf("*");
	557	printf("\n");
	558	}
43d014f0	559	}
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