/**************************************************************************
 * 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.                  *
 **************************************************************************/

/*
$Log$
Revision 1.5  2001/03/16 16:26:05  morsch
Put vacuum in beam-pipe not air.

Revision 1.4  2001/01/31 11:55:27  hristov
Loop variables declared once (required by HP)

Revision 1.3  2001/01/30 12:28:27  morsch
Recess station 1 changed do make space for chambers.

Revision 1.2  2000/12/04 16:30:02  morsch
Update to geometry defined for the Muon Spectrometer Addendum to the TDR.

*/


#include "AliSHILvF.h"
#include "AliRun.h"
#include "AliMC.h"
#include "AliConst.h"
#include "AliALIFE.h"

ClassImp(AliSHILvF)
 
//_____________________________________________________________________________
AliSHILvF::AliSHILvF()
{
  //
  // Default constructor for muon shield
  //
}
 
//_____________________________________________________________________________
AliSHILvF::AliSHILvF(const char *name, const char *title)
  : AliSHIL(name,title)
{
  //
  // Standard constructor for muon shield
  //
  SetMarkerColor(7);
  SetMarkerStyle(2);
  SetMarkerSize(0.4);
  // Pb  cone not yet compatible with muon chamber inner radii
  // Switched off by default
  fPbCone=kFALSE;
}
 
//_____________________________________________________________________________
void AliSHILvF::CreateGeometry()
{
  //
  // Build muon shield geometry
  //
  //
  //Begin_Html
  /*
    <img src="picts/AliSHILvF.gif">
  */
  //End_Html
  //Begin_Html
  /*
    <img src="picts/AliSHILvFTree.gif">
  */
  //End_Html

    Float_t cpar[5], cpar0[5], tpar[3], par1[39], par2[27], par3[27], 
	par4[21], par0[45];
    Float_t dz, dZ;
  
    Int_t *idtmed = fIdtmed->GetArray()-1699;

#include "ABSOSHILConst.h"
#include "SHILConst.h"

enum {kC=1705, kAl=1708, kFe=1709, kCu=1710, kW=1711, kPb=1712,
		kNiCuW=1720, kVacuum=1715, kAir=1714, kConcrete=1716,
		kPolyCH2=1717, kSteel=1709, kInsulation=1713};	
//
// Material of the rear part of the shield
  Int_t iHeavy=kNiCuW;
  if (fPbCone) iHeavy=kPb;
//
//
// begin Fluka
  AliALIFE* flukaGeom = new AliALIFE("beamshield.alife", "beamshield_vol.inp");
  Int_t i=0,ifl=0;
  Float_t posfluka[3]={0., 0., 0.};
  Float_t zfluka[12], rfluka1[12], rfluka2[12], rfluka3[12] ;  
//
// end Fluka  
  
  
//
// Mother volume
//
  Float_t dRear1=dRear;
  
  Float_t zstart=zRear-dRear1;
  
  par0[0]  = 0.;
  par0[1]  = 360.;
  par0[2]  = 13.;

  Float_t dl=(zvac12-zstart)/2.;
  dz=zstart+dl;
//
  par0[3]  = -dl;
  par0[4]  = 0.;
  par0[5]  = zstart * TMath::Tan(accMin);

  par0[6]  = -dl+dRear1;
  par0[7]  = 0.;
  par0[8]  = zRear * TMath::Tan(accMin);

  par0[9]  = -dl+dRear1;
  par0[10]  = 0.;
  par0[11]  = R11;

  par0[12]  = -dz+zvac4;
  par0[13]  = 0.;
  par0[14]  = R11;

  par0[15]  = -dz+zvac4;
  par0[16] = 0.;
  par0[17] = R21;

  par0[18] = -dz+zvac6;
  par0[19] = 0.;
  par0[20] = R21;

  par0[21] = -dz+zvac6;
  par0[22] = 0.;
  par0[23] = zvac6 * TMath::Tan(accMin);

  par0[24] = -dz+zConeE;
  par0[25] = 0.;
  par0[26] = 30.;

  par0[27] = -dz+zvac10;
  par0[28] = 0.;
  par0[29] = 30.;

  par0[30] = -dz+zvac10;
  par0[31] = 0.;
  par0[32] = R42;

  par0[33] = -dz+zvac11;
  par0[34] = 0.;
  par0[35] = R42;

  par0[36] = -dz+zvac11;
  par0[37] = 0.;
  par0[38] = R43;

  par0[39] = -dz+zvac12;
  par0[40] = 0.;
  par0[41] = R43;

  gMC->Gsvolu("YMOT", "PCON", idtmed[kVacuum], par0, 42);
  dz=zstart+dl;
  gMC->Gspos("YMOT", 1, "ALIC", 0., 0., dz, 0, "ONLY");  
//

  dZ=-dl;

//
// First section: bellows below and behind front absorber 
// 
//
  par1[0]  = 0.;
  par1[1]  = 360.;
  par1[2]  = 12.;
  dl=(zvac4-zstart)/2.;
  
  par1[3]  = -dl;
  par1[4]  = rAbs+(zstart-zOpen) * TMath::Tan(thetaOpen1);
  par1[5]  = zstart * TMath::Tan(accMin);

  par1[6]  = -dl+zvac1-zstart;
  par1[7]  = rAbs+ (zvac1-zOpen) * TMath::Tan(thetaOpen1);
  par1[8]  = zvac1 * TMath::Tan(accMin);

  par1[9]  = par1[6]+dr11;
  par1[10] = par1[7]+dr11;
  par1[11] = (zvac1+dr11) * TMath::Tan(accMin);

  par1[12] = -dl+dRear1;
  par1[13] = par1[10];
  par1[14] = zRear * TMath::Tan(accMin);

  par1[15] = -dl+dRear1;
  par1[16] = par1[10];
  par1[17] = R11;

  par1[18] = -dl+(zvac1+dr11+dB1-zstart);
  par1[19] = par1[16];
  par1[20] = R11;

  par1[21] = par1[18]+dr12;
  par1[22] = par1[19]+dr12;
  par1[23] = R11;

  par1[24] = par1[21]+dF1;
  par1[25] = par1[22];
  par1[26] = R11;

  par1[27] = par1[24]+dr12;
  par1[28] = par1[25]-dr12;
  par1[29] = R11;

  par1[30] = par1[27]+dB1;
  par1[31] = par1[28];
  par1[32] = R11;

  par1[33] = par1[30]+dr13;
  par1[34] = par1[31];
  par1[35] = R11;

  par1[36] = -dl+zvac4-zstart;
  par1[37] = par1[34];
  par1[38] = R11;

  Float_t r2  = par1[34];
  Float_t rBox= par1[31]-0.1;
  Float_t rc1 = par1[7];

  gMC->Gsvolu("YGO1", "PCON", idtmed[kNiCuW], par1, 39);

//
// begin Fluka
  for (ifl=0; ifl<12; ifl++) {
      zfluka[ifl]=par1[3+3*ifl]+dl+zRear-dRear;
      rfluka1[ifl] = par1[4+3*ifl];
      rfluka2[ifl] = par1[5+3*ifl]; 
      if (ifl > 3)  rfluka2[ifl]=rfluka2[ifl]-dRSteel1;
  }

  
  Float_t rfluka0[8]={rBox,rBox,rBox,rBox,rBox,rBox,rBox,rBox};
  
  flukaGeom->Comment("1st part: Shield");
// Use default for first three cones
  flukaGeom->SetDefaultVolume("*ACR02");
  rfluka2[0]=rfluka2[1]=rfluka2[2]=-1;
//
  flukaGeom->Comment("Shield");         
  flukaGeom->PolyCone(rfluka1,    rfluka2,   zfluka,   12, posfluka, "NIW", "MF", "$SHS");
  flukaGeom->Comment("Vacuum");
  flukaGeom->PolyCone(rfluka0,  rfluka1+2, zfluka+2,   8, posfluka, "VACUUM", "MF", "$SHS");
//
// end Fluka


  for (i=4; i<38; i+=3) par1[i]  = 0;

  gMC->Gsvolu("YMO1", "PCON", idtmed[kVacuum+40], par1, 39);
  gMC->Gspos("YGO1", 1, "YMO1", 0., 0., 0., 0, "ONLY");  
  dZ+=dl;
  gMC->Gspos("YMO1", 1, "YMOT", 0., 0., dZ, 0, "ONLY");  
  dZ+=dl;

//
// Steel envelope
  tpar[0]=R11-dRSteel1;
  tpar[1]=R11;
  tpar[2]=dl-dRear1/2;
  gMC->Gsvolu("YSE1", "TUBE", idtmed[kNiCuW], tpar, 3);
  dz=dl-tpar[2];
  gMC->Gspos("YSE1", 1, "YGO1", 0., 0., dz, 0, "ONLY");

// begin Fluka
  flukaGeom->Comment("1st part: Steel Envelope");
  flukaGeom->Cylinder(tpar[0], tpar[1], zRear, zvac4, posfluka, "NIW", "MF", "$SHS");
//
// end Fluka

//
// 1st section: vacuum system
//
//
// Bellow 1
//
  tpar[0]=rB1;
  tpar[1]=rB1+hB1;
  tpar[2]=eB1/2.;
  gMC->Gsvolu("YB11", "TUBE", idtmed[kSteel+40], tpar, 3);
  Float_t dl1=tpar[2];
  
  tpar[0]=rB1+hB1-eB1;
  tpar[1]=rB1+hB1;
  tpar[2]=(lB1/2.-2.*eB1)/2.;
  gMC->Gsvolu("YB12", "TUBE", idtmed[kSteel+40], tpar, 3);
  Float_t dl2=tpar[2];

  tpar[0]=rB1-eB1;
  tpar[1]=rB1;
  tpar[2]=lB1/8.;
  gMC->Gsvolu("YB13", "TUBE", idtmed[kSteel+40], tpar, 3);
  Float_t dl3=tpar[2];


  tpar[0]=0;
  tpar[1]=rB1+hB1;
  tpar[2]=lB1/2.;
  gMC->Gsvolu("YBU1", "TUBE", idtmed[kVacuum+40], tpar, 3);

  dz=-tpar[2]+dl3;
  gMC->Gspos("YB13", 1, "YBU1", 0., 0., dz, 0, "ONLY"); 
  dz+=dl3;
  dz+=dl1;  
  gMC->Gspos("YB11", 1, "YBU1", 0., 0., dz, 0, "ONLY"); 
  dz+=dl1;  
  dz+=dl2;  
  gMC->Gspos("YB12", 1, "YBU1", 0., 0., dz, 0, "ONLY"); 
  dz+=dl2;  
  dz+=dl1;
  gMC->Gspos("YB11", 2, "YBU1", 0., 0., dz, 0, "ONLY"); 
  dz+=dl1;
  dz+=dl3;
  gMC->Gspos("YB13", 2, "YBU1", 0., 0., dz, 0, "ONLY"); 
  

  tpar[0]=0;
  tpar[1]=rB1+hB1;
  tpar[2]=10.*lB1/2.;
  gMC->Gsvolu("YBM1", "TUBE", idtmed[kVacuum+40], tpar, 3);
  dz=-tpar[2]+lB1/2.;

  for (i=0; i<10; i++) {
    gMC->Gspos("YBU1", i+1 , "YBM1", 0., 0., dz, 0, "ONLY"); 
    dz+=lB1;
  }

  dz=-dl+(zvac1-zstart)+dr11+tpar[2];
  gMC->Gspos("YBM1", 1, "YMO1", 0., 0., dz, 0, "ONLY"); 

  dz=dl-dr13-(zvac4-zvac3)-tpar[2];
  gMC->Gspos("YBM1", 2, "YMO1", 0., 0., dz, 0, "ONLY"); 

//
// Flange

  tpar[0]=0;
  tpar[1]=rF1;
  tpar[2]=dF1/2.;
  gMC->Gsvolu("YFM1", "TUBE", idtmed[kVacuum+40], tpar, 3);

  tpar[0]=rF1-2.;
  tpar[1]=rF1;
  tpar[2]=dF1/2.;
  gMC->Gsvolu("YF11", "TUBE", idtmed[kSteel+40], tpar, 3);
  gMC->Gspos("YF11", 1, "YFM1", 0., 0., 0., 0, "ONLY"); 

  tpar[0]=rB1;
  tpar[1]=rF1-2.;
  tpar[2]=dFlange/2.;
  gMC->Gsvolu("YF12", "TUBE", idtmed[kSteel+40], tpar, 3);
  dz=-dF1/2.+tpar[2];
  gMC->Gspos("YF12", 1, "YFM1", 0., 0., dz, 0, "ONLY"); 
  dz= dF1/2.-tpar[2];
  gMC->Gspos("YF12", 2, "YFM1", 0., 0., dz, 0, "ONLY"); 

  dz=-dl+(zvac2-zstart);
  gMC->Gspos("YFM1", 2, "YMO1", 0., 0., dz, 0, "ONLY"); 

//
// pipe between flange and bellows
  tpar[0]=rB1-dTubeS;
  tpar[1]=rB1;
  tpar[2]=2.*(dB1+dr12-10.*lB1)/4.;
  gMC->Gsvolu("YPF1", "TUBE", idtmed[kSteel+40], tpar, 3);
 
  dz=-dl+(zvac2-zstart)-dF1/2.-tpar[2];
  gMC->Gspos("YPF1", 1, "YMO1", 0., 0., dz, 0, "ONLY"); 
  dz=-dl+(zvac2-zstart)+dF1/2.+tpar[2];
  gMC->Gspos("YPF1", 2, "YMO1", 0., 0., dz, 0, "ONLY"); 

//
// begin Fluka
  flukaGeom->Comment("First Bellow");
  Float_t z1=zvac1+dr11;
  Float_t z2;
  
  for (i=0; i<10; i++) {
      z2=z1+eB1;
      flukaGeom->Cylinder(0., rB1, z1, z2, posfluka, "VACUUM", "MF", "$SHH");
      flukaGeom->Cylinder(rB1, rB1+hB1, z1, z2, posfluka, "STEEL", "MF", "$SHH");
      
      z1=z2;
      z2+=lB1/2.-eB1;
      flukaGeom->Cylinder(0., rB1+hB1-eB1, z1, z2, posfluka, "VACUUM", "MF", "$SHH");
      flukaGeom->Cylinder(rB1+hB1-eB1, rB1+hB1, z1, z2, posfluka, "STEEL", "MF", "$SHH");
      z1=z2;
      z2=z1+eB1;
      flukaGeom->Cylinder(0., rB1, z1, z2, posfluka, "VACUUM", "MF", "$SHH");
      flukaGeom->Cylinder(rB1, rB1+hB1, z1, z2, posfluka, "STEEL", "MF", "$SHH");
      z1=z2;
      z2+=lB1/2.-eB1;
      flukaGeom->Cylinder(0., rB1, z1, z2, posfluka, "VACUUM", "MF", "$SHH");
      flukaGeom->Cylinder(rB1, rB1+eB1, z1, z2, posfluka, "STEEL", "MF", "$SHH");
      flukaGeom->Cylinder(rB1+eB1, rB1+hB1, z1, z2, posfluka, "AIR", "MF", "$SHH");
      z1=z2;
   }
  flukaGeom->Cylinder(rB1+hB1, rB1+hB1+0.5, zvac1+dr11, z1, posfluka, "AIR", "MF", "$SHH");
  flukaGeom->Cylinder(rB1+hB1+0.5, rBox, zvac1+dr11, z1, posfluka, "AIR", "MF", "$SHH");
  Float_t zcy1=z1;
  

  flukaGeom->Comment("Second Bellow");
  z1=zvac3-dr13;
  for (i=0; i<10; i++) {
      z2=z1-eB1;
      flukaGeom->Cylinder(0., rB1, z2, z1, posfluka, "VACUUM", "MF", "$SHH");
      flukaGeom->Cylinder(rB1, rB1+hB1, z2, z1, posfluka, "STEEL", "MF", "$SHH");
      z1=z2;
      z2-=lB1/2.-eB1;
      flukaGeom->Cylinder(0., rB1+hB1-eB1, z2, z1, posfluka, "VACUUM", "MF", "$SHH");
      flukaGeom->Cylinder(rB1+hB1-eB1, rB1+hB1, z2, z1, posfluka, "STEEL", "MF", "$SHH");
      z1=z2;
      z2=z1-eB1;
      flukaGeom->Cylinder(0., rB1, z2, z1, posfluka, "VACUUM", "MF", "$SHH");
      flukaGeom->Cylinder(rB1, rB1+hB1, z2, z1, posfluka, "STEEL", "MF", "$SHH");
      z1=z2;
      z2-=lB1/2.-eB1;
      flukaGeom->Cylinder(0., rB1, z2, z1, posfluka, "VACUUM", "MF", "$SHH");
      flukaGeom->Cylinder(rB1, rB1+eB1, z2, z1, posfluka, "STEEL", "MF", "$SHH");
      flukaGeom->Cylinder(rB1+eB1, rB1+hB1, z2, z1, posfluka, "AIR", "MF", "$SHH");
      z1=z2;
   }
  flukaGeom->Cylinder(rB1+hB1, rB1+hB1+0.5, z1, zvac3-dr13, posfluka, "AIR", "MF", "$SHH");
  flukaGeom->Cylinder(rB1+hB1+0.5, rBox,    z1, zvac3-dr13, posfluka, "AIR", "MF", "$SHH");

  Float_t zcy2=z1;
  flukaGeom->Comment("Flange");
  Float_t zfl=(zcy1+zcy2)/2.;

  z1=zfl-dF1/2.;
  z2=zfl+dF1/2.;  
  flukaGeom->Cylinder(0.,rF1-2.        , z1, z2, posfluka, "VACUUM", "MF", "$SHH");
  flukaGeom->Cylinder(rF1-2., rF1      , z1, z2, posfluka, "STEEL", "MF", "$SHH");
  flukaGeom->Cylinder(rF1, rF1+0.05     , z1, z2, posfluka, "AIR", "MF", "$SHH");
  flukaGeom->Cylinder(rF1+0.05, rBox    , z1, z2, posfluka, "AIR", "MF", "$SHH");
  z2=z1;
  z1=z2-dFlange;
  flukaGeom->Cylinder(0.,rB1           , z1, z2, posfluka, "VACUUM", "MF", "$SHH");
  flukaGeom->Cylinder(rB1, rF1         , z1, z2, posfluka, "STEEL", "MF", "$SHH");
  flukaGeom->Cylinder(rF1, rF1+0.5     , z1, z2, posfluka, "AIR", "MF", "$SHH");
  flukaGeom->Cylinder(rF1+0.5, rBox    , z1, z2, posfluka, "AIR", "MF", "$SHH");
  z2=z1;
  z1=zcy1;
  flukaGeom->Cylinder(0.,rB1           , z1, z2, posfluka, "VACUUM", "MF", "$SHH");
  flukaGeom->Cylinder(rB1, rB1+0.1     , z1, z2, posfluka, "STEEL", "MF", "$SHH");
  flukaGeom->Cylinder(rB1+0.1, rB1+0.6 , z1, z2, posfluka, "AIR", "MF", "$SHH");
  flukaGeom->Cylinder(rB1+0.6, rBox    , z1, z2, posfluka, "AIR", "MF", "$SHH");

  z1=zfl+dF1/2.;
  z2=z1+dFlange;
  flukaGeom->Cylinder(0.,rB1           , z1, z2, posfluka, "VACUUM", "MF", "$SHH");
  flukaGeom->Cylinder(rB1, rF1         , z1, z2, posfluka, "STEEL", "MF", "$SHH");
  flukaGeom->Cylinder(rF1, rF1+0.5     , z1, z2, posfluka, "AIR", "MF", "$SHH");
  flukaGeom->Cylinder(rF1+0.5, rBox    , z1, z2, posfluka, "AIR", "MF", "$SHH");
  z1=z2;
  z2=zcy2;
  flukaGeom->Cylinder(0.,rB1           , z1, z2, posfluka, "VACUUM", "MF", "$SHH");
  flukaGeom->Cylinder(rB1, rB1+0.1     , z1, z2, posfluka, "STEEL", "MF", "$SHH");
  flukaGeom->Cylinder(rB1+0.1, rB1+0.6 , z1, z2, posfluka, "AIR", "MF", "$SHH");
  flukaGeom->Cylinder(rB1+0.6, rBox    , z1, z2, posfluka, "AIR", "MF", "$SHH");
// end Fluka
//

// pipe and heating jackets outside bellows
//
// left side
  cpar0[0]=(zvac1-zstart)/2;
  cpar0[1]=rVacu+(zstart-zOpen)*TMath::Tan(thetaOpen1)-0.05;
  cpar0[2]=rAbs +(zstart-zOpen)*TMath::Tan(thetaOpen1);
  cpar0[3]=cpar0[1]+2.*cpar0[0]*TMath::Tan(thetaOpen1);
  cpar0[4]=cpar0[2]+2.*cpar0[0]*TMath::Tan(thetaOpen1);
  gMC->Gsvolu("YV11", "CONE", idtmed[kSteel+40], cpar0, 5);
//
// insulation
  dTubeS=0.15;
  cpar[0]=cpar0[0];
  cpar[1]=cpar0[1]+0.15;
  cpar[2]=cpar0[1]+0.65;
  cpar[3]=cpar0[3]+0.15;
  cpar[4]=cpar0[3]+0.65;
  gMC->Gsvolu("YI11", "CONE", idtmed[kInsulation+40], cpar, 5);
  gMC->Gspos("YI11", 1, "YV11", 0., 0., 0., 0, "ONLY"); 
//
// clearance
  cpar[1]=cpar0[1]+0.75;
  cpar[2]=cpar0[1]+1.25;
  cpar[3]=cpar0[3]+0.75;
  cpar[4]=cpar0[3]+1.25;
  gMC->Gsvolu("YP11", "CONE", idtmed[kVacuum+40], cpar, 5);
  gMC->Gspos("YP11", 1, "YV11", 0., 0., 0., 0, "ONLY"); 
  
  dz=-dl+cpar0[0];
  gMC->Gspos("YV11", 1, "YMO1", 0., 0., dz, 0, "ONLY"); 

// begin Fluka
//
  Float_t rf1[10], rf2[10];
  rf1[0]=0.; rf2[0]=0.;
  rf1[1] = cpar0[1];
  rf2[1] = cpar0[3];


  rf1[2]=rf1[1]+0.15; rf1[3]=rf1[2]+0.5; rf1[4]=rf1[3]+0.1;
  rf1[5]=rf1[4]+0.5; 
  rf2[2]=rf2[1]+0.15; rf2[3]=rf2[2]+0.5; rf2[4]=rf2[3]+0.1; 
  rf2[5]=rf2[4]+0.5;
  
  char* materialsA[7] 
      = {"VACUUM", "STEEL", "PIPEINSU", "STEEL", "AIR", "AIR"};
  char* fieldsA[7] 
      = {"MF", "MF", "MF", "MF", "MF", "MF"};
  char* cutsA[7] 
      = {"$SHH","$SHH","$SHH","$SHH","$SHH","$SHH","$SHH"};

  flukaGeom->Comment("1st part: Beam pipe lateral struture (left)");
  flukaGeom->OnionCone(rf1, rf2,  6 , zstart, zvac1, posfluka, materialsA, fieldsA, cutsA);
  for (i=0; i<7; i++) rf1[i]=rf2[i];
  for (i=1; i<7; i++) rf2[i]=rf1[i]+dr11*TMath::Tan(thetaOpen1);
  flukaGeom->OnionCone(rf1, rf2,  6 , zvac1, zvac1+dr11, posfluka, materialsA, fieldsA, cutsA);
  flukaGeom->Cone(rc1, rf2[5], rc1, rc1+dr11, zvac1 , zvac1+dr11, posfluka,"AIR", "MF", "$SHH");
//
// end Fluka


// right side
  dTubeS=0.35;
  dVacuS+=0.25;
  
  cpar0[0]=(zvac4-zvac3)/2;
  cpar0[1]=rB1;
  cpar0[2]=cpar0[1]+dVacuS;

  cpar0[3]=cpar0[1]+2.*cpar0[0]*TMath::Tan(thetaOpenB);
  cpar0[4]=cpar0[2]+2.*cpar0[0]*TMath::Tan(thetaOpenB);
  gMC->Gsvolu("YV12", "CONE", idtmed[kSteel], cpar0, 5);
  Float_t r2V=cpar0[3];
//
// insulation
  cpar[0]=cpar0[0];
  cpar[1]=cpar0[1]+dTubeS;
  cpar[2]=cpar0[1]+dTubeS+dInsuS;
  cpar[3]=cpar0[3]+dTubeS;
  cpar[4]=cpar0[3]+dTubeS+dInsuS;
  gMC->Gsvolu("YI12", "CONE", idtmed[kInsulation], cpar, 5);
  gMC->Gspos("YI12", 1, "YV12", 0., 0., 0., 0, "ONLY"); 

//
// clearance
  cpar[1]=cpar0[1]+dTubeS+dInsuS+dEnveS;
  cpar[2]=cpar0[1]+dTubeS+dInsuS+dEnveS+dFreeS;
  cpar[3]=cpar0[3]+dTubeS+dInsuS+dEnveS;
  cpar[4]=cpar0[3]+dTubeS+dInsuS+dEnveS+dFreeS;
  gMC->Gsvolu("YP12", "CONE", idtmed[kAir], cpar, 5);
  gMC->Gspos("YP12", 1, "YV12", 0., 0., 0., 0, "ONLY"); 
  
  dz=dl-cpar0[0];
  gMC->Gspos("YV12", 1, "YMO1", 0., 0., dz, 0, "ONLY"); 

//
// begin Fluka
  char* materialsB[8] 
      = {"VACUUM", "STEEL", "PIPEINSU", "STEEL", "AIR", "STEEL", "AIR"};

  char* fieldsB[8] 
      = {"MF", "MF", "MF", "MF", "MF", "MF", "MF"};
 
 char* cutsB[8] 
      = {"$SHH","$SHH","$SHH","$SHH","$SHH","$SHH","$SHH", "$SHH"};

  rf1[0]=rf2[0]=0.;
  rf1[1]=cpar0[1]; 
  rf2[1]=cpar0[3];

  rf1[2]=rf1[1]+dTubeS; rf1[3]=rf1[2]+dInsuS; rf1[4]=rf1[3]+dEnveS;
  rf1[5]=rf1[4]+dFreeS; rf1[6]=rf1[5]+dProtS; rf1[7]=r2;
  
  rf2[2]=rf2[1]+dTubeS; rf2[3]=rf2[2]+dInsuS; rf2[4]=rf2[3]+dEnveS; 
  rf2[5]=rf2[4]+dFreeS; rf2[6]=rf2[5]+dProtS; 
  rf2[7]=r2;
  flukaGeom->Comment("1st part: Beam pipe lateral structure (right)");
  flukaGeom->OnionCone(rf1, rf2,  8 , zvac3, zvac4, posfluka, materialsB, fieldsB, cutsB);
  for (i=0; i<8; i++) rf2[i]=rf1[i];
  for (i=1; i<7; i++) rf1[i]=rf2[i];
  rf1[7]=rf2[7];
  flukaGeom->OnionCone(rf1, rf2,  8 , zvac3-dr13, zvac3, posfluka, materialsB, fieldsB, cutsB);
//
// end Fluka

//
// Second Section
// Between first and second bellow section
//

  par2[0]  = 0.;
  par2[1]  = 360.;
  par2[2]  = 7.;
  dl=(zvac7-zvac4)/2.;
// recess station 2
  par2[3]  = -dl;
  par2[4]  = r2;
  par2[5]  = R21;

  par2[6]  = -dl+10.;
  par2[7]  = r2;
  par2[8]  = R21;

  par2[9]   = -dl+(zvac6-zvac4);
  par2[10]  = r2+(zvac6-zvac4-10.) * TMath::Tan(thetaOpen2);
  par2[11]  = R21;

  par2[12] = -dl+(zvac6-zvac4);
  par2[13] = par2[10];
  par2[14] = zvac6*TMath::Tan(accMin);

// Start of Pb section
  par2[15] = -dl+(zPb-zvac4);
  par2[16] = r2+(zPb-zvac4-10.) * TMath::Tan(thetaOpen2);
  par2[17] = zPb*TMath::Tan(accMin);

//
// end of cone following 2 deg line
  par2[18] = -dl+(zConeE-zvac4);
  par2[19] = r2+(zConeE-zvac4-10.) * TMath::Tan(thetaOpen2);
  par2[20] = 30.;

  par2[21] = -dl+(zvac7-zvac4);
  par2[22] = r2+(zvac7-zvac4-10.) * TMath::Tan(thetaOpen2);
  par2[23] = 30.;


  gMC->Gsvolu("YGO2", "PCON", idtmed[kNiCuW+40], par2, 24);

//
// begin Fluka
  Float_t rfvacu0[8], rfvacu1[8], rfvacu2[8], rfvacu3[8], rfvacu4[8], rfvacu5[8];

  for (ifl=0; ifl<7; ifl++) {
      rfluka1[ifl] = par2[4+3*ifl];
      rfluka2[ifl] = par2[5+3*ifl]-dRSteel2; 
      rfluka3[ifl] = par2[5+3*ifl]; 
      rfvacu5[ifl] = r2V;
      rfvacu4[ifl]=rfvacu5[0]+dTubeS;      
      rfvacu3[ifl]=rfvacu4[0]+dInsuS;      
      rfvacu2[ifl]=rfvacu3[0]+dEnveS;
      rfvacu1[ifl]=rfvacu2[0]+dFreeS;
      rfvacu0[ifl]=rfvacu1[0]+dProtS;      
  }

  char* materials1[11] 
      = {"VACUUM", "STEEL", "PIPEINSU", "STEEL", "AIR", "STEEL", "AIR", "NIW",
	 "NIW", "STEEL"};
  char* fields1[11] 
      = {"MF", "MF", "MF", "MF", "MF", "MF", "MF", "MF", "MF",  "MF", "MF"};
  char* cuts1[11] 
      = {"$SHH","$SHH","$SHH","$SHH","$SHH","$SHH","$SHH", "$SHH","$SHH","$SHS", "$SHS"};


  rf1[0]=0.; rf1[1]=rfvacu5[0]; rf1[2]=rfvacu4[0]; rf1[3]=rfvacu3[0];   
  rf1[4]=rfvacu2[0]; rf1[5]=rfvacu1[0]; rf1[6]=rfvacu0[0];
  rf1[7]=rfluka1[0]; rf1[9]=R11-dRSteel1;
  rf1[10]=R21;
  for (i=1; i<7; i++) rf2[i]=rf1[i]+4.*TMath::Tan(thetaOpenB);
  rf2[7]=rf1[7];
  rf2[9]=rf1[9]; rf2[10]=rf1[10];
  rf1[8]=13.;
  rf2[8]=rf1[8]+4.*TMath::Tan(thetaOpenPb);

  flukaGeom->Comment("2nd part: Beam pipe lateral struture (0)");
  flukaGeom->OnionCone(rf1, rf2,  11 , zvac4, zvac4+4, posfluka, materials1, fields1, cuts1);

 
  for (i=0; i<11; i++) rf1[i]=rf2[i];
  for (i=1; i<7; i++) 
      rf2[i]=rf1[i]+20.*TMath::Tan(thetaOpenB);
  rf2[7]=rf1[7];
  rf2[8]=rf1[8]+20.*TMath::Tan(thetaOpenPb);
  rf1[9]=R21-dRSteel2;
  rf1[10]=R21;  
  rf2[9]=R21-dRSteel2;
  rf2[10]=R21;  
  flukaGeom->Comment("2nd part: Beam pipe lateral struture (1)");
  flukaGeom->OnionCone(rf1, rf2,  11 , zvac4+4, zvac4+24, posfluka, materials1, fields1, cuts1);

  for (i=0; i<11; i++) rf1[i]=rf2[i];
  for (i=1; i<7; i++) 
      rf2[i]=rf1[i]+(zvac6-zvac4-24.)*TMath::Tan(thetaOpenB);
  rf2[7]=rf1[7]+(zvac6-zvac4-24.)*TMath::Tan(thetaOpen2);
  rf2[8]=rf1[8]+(zvac6-zvac4-24.)*TMath::Tan(thetaOpenPb);
  rf1[9]=R21-dRSteel2;
  rf1[10]=R21;  
  rf2[9]=R21-dRSteel2;
  rf2[10]=R21;  
  flukaGeom->Comment("2nd part: Beam pipe lateral struture (2)");
  flukaGeom->OnionCone(rf1, rf2,  11 , zvac4+24, zvac6, posfluka, materials1, fields1, cuts1);

  for (i=0; i<11; i++) rf1[i]=rf2[i];
  for (i=1; i<7; i++) 
      rf2[i]=rf1[i]+4.*TMath::Tan(thetaOpenB);
  rf2[7]=rf1[7]+4.*TMath::Tan(thetaOpen2);

  rf2[8]=rf1[8]+4.*TMath::Tan(thetaOpenPb);
  rf1[9]=R21-dRSteel2;
  rf2[9]=R21-dRSteel2;
  rf1[10]=1;  
  rf2[10]=-1;  
  flukaGeom->Comment("2nd part: Beam pipe lateral struture (3)");
  flukaGeom->OnionCone(rf1, rf2,  11 , zvac6, zvac6+4, posfluka, materials1, fields1, cuts1);


  for (i=0; i<11; i++) rf1[i]=rf2[i];
  for (i=1; i<7; i++) 
      rf2[i]=rf1[i]+(zPb-(zvac6-4.))*TMath::Tan(thetaOpenB);
  rf2[7]=rf1[7]+(zPb-(zvac6-4.))*TMath::Tan(thetaOpen2);

  rf2[8]=rf1[8]+(zPb-(zvac6-4.))*TMath::Tan(thetaOpenPb);
  rf1[9]=(zvac6+4)*TMath::Tan(accMin)-dRSteel2;
  rf2[9]=zPb*TMath::Tan(accMin)-dRSteel2;
  rf1[10]=1.;  
  rf2[10]=-1.;  
  flukaGeom->Comment("2nd part: Beam pipe lateral struture (4)");
  flukaGeom->OnionCone(rf1, rf2,  11 , zvac6+4, zPb, posfluka, materials1, fields1, cuts1);

  
  for (i=0; i<11; i++) rf1[i]=rf2[i];
  for (i=1; i<7; i++) 
      rf2[i]=rf1[i]+(zConeE-zPb)*TMath::Tan(thetaOpenB);
  rf2[7]=rf1[7]+(zConeE-zPb)*TMath::Tan(thetaOpen2);
  rf1[8]=rf2[8]+2.;
  rf2[8]=rf1[8]+(zConeE-zPb)*TMath::Tan(thetaOpenPb);
  rf1[9]=zPb*TMath::Tan(accMin)-dRSteel2;
  rf2[9]=30.-dRSteel2;
  rf1[10]=1.;  
  rf2[10]=-1.;  
  flukaGeom->Comment("2nd part: Beam pipe lateral struture (5)");
  if (fPbCone) materials1[7] = "LEAD";
  materials1[8]="LEAD";
  flukaGeom->OnionCone(rf1, rf2,  11 , zPb, zConeE, posfluka, materials1, fields1, cuts1);

  for (i=0; i<11; i++) rf1[i]=rf2[i];
  for (i=1; i<7; i++) 
      rf2[i]=rf1[i]+(zvac7-zConeE)*TMath::Tan(thetaOpenB);
  rf2[7]=rf1[7]+(zvac7-zConeE)*TMath::Tan(thetaOpen2);

  rf1[8]=rf2[8];
  rf2[8]=rf1[8]+(zvac7-zConeE)*TMath::Tan(thetaOpenPb);
  rf1[9]=30.-dRSteel2;
  rf2[9]=30.-dRSteel2;
  rf1[10]=30.;  
  rf2[10]=30.;  
  flukaGeom->Comment("2nd part: Beam pipe lateral struture (6)");
  flukaGeom->OnionCone(rf1, rf2,  10 , zConeE, zvac7, posfluka, materials1, fields1, cuts1);
// Steel envelope and recesses for station 3
  flukaGeom->Comment("Steel envelope and recesses for station 3");
  flukaGeom->Cylinder(rf1[9],rf1[10], zConeE, zch31, posfluka, materials1[9], fields1[9], cuts1[9]);
  flukaGeom->Cylinder(rf1[9], rf1[10]-1, zch31, zch32, posfluka, materials1[9], fields1[9], cuts1[9]);
  flukaGeom->Cylinder(rf1[10]-1, rf1[10], zch31, zch32, posfluka, "AIR", fields1[9], cuts1[9]);
  flukaGeom->Cylinder(rf1[9], rf1[10], zch32,  zvac7, posfluka, materials1[9], fields1[9], cuts1[9]);

  Float_t r3V = rf2[1];
  
// end Fluka

//
// Lead cone option replacing Tungsten 
//
  Float_t parPb[12];
  parPb[0]  = 0.;
  parPb[1]  = 360.;
  parPb[2]  = 3.;
  Float_t dlPb=(zvac7-zPb)/2.;
  
  parPb[3]  = -dlPb;
  parPb[4]  = 17.657;
  parPb[5]  = zPb*TMath::Tan(accMin);
  
  parPb[6]  = -dlPb+(zConeE-zPb);
  parPb[7]  = parPb[4]+(zConeE-zPb)*TMath::Tan(thetaOpenPb);
  parPb[8]  = 30.;
  
  parPb[9]   = dlPb;
  parPb[10]  = parPb[7]+(zvac7-zConeE)*TMath::Tan(thetaOpenPb);
  parPb[11]  = 30.;

  Float_t rPbLast=parPb[10];


  gMC->Gsvolu("YXO2", "PCON", idtmed[kPb], parPb, 12);	  
  gMC->Gspos("YXO2", 1, "YGO2", 0., 0., (zPb-zvac4)/2., 0, "ONLY");  
  

  parPb[4]  = r2+(zPb-zvac3) * TMath::Tan(thetaOpen2);
  parPb[5]  = 17.657;
  
  parPb[7]  = r2+(zConeE-zvac3) * TMath::Tan(thetaOpen2);
  parPb[8]  = parPb[5]+(zConeE-zPb)*TMath::Tan(thetaOpenPb);
  
  parPb[10]  = r2+(zvac7-zvac3) * TMath::Tan(thetaOpen2);
  parPb[11]  = parPb[8]+(zvac7-zConeE)*TMath::Tan(thetaOpenPb);

  gMC->Gsvolu("YYO2", "PCON", idtmed[iHeavy+40], parPb, 12);	  
  gMC->Gspos("YYO2", 1, "YGO2", 0., 0., (zPb-zvac4)/2., 0, "ONLY");  

  for (i=4; i<23; i+=3) par2[i]  = 0;
          
  gMC->Gsvolu("YMO2", "PCON", idtmed[kVacuum+40], par2, 24);
  gMC->Gspos("YGO2", 1, "YMO2", 0., 0., 0., 0, "ONLY");  
  dZ+=dl;
  gMC->Gspos("YMO2", 1, "YMOT", 0., 0., dZ, 0, "ONLY");  
  dZ+=dl;
//
// Steel envelope
//
// (1)
  tpar[0]=R11-dRSteel1;
  tpar[1]=R21;
  tpar[2]=2;
  gMC->Gsvolu("YS21", "TUBE", idtmed[kSteel], tpar, 3);
  dz=-dl+tpar[2];
  gMC->Gspos("YS21", 1, "YGO2", 0., 0., dz, 0, "ONLY");  
  dz+=tpar[2];
// (2)
  tpar[0]=R21-dRSteel2;
  tpar[1]=R21;
  tpar[2]=(zvac6-zvac5)/2.;
  gMC->Gsvolu("YS22", "TUBE", idtmed[kSteel], tpar, 3);
  dz+=tpar[2];
  gMC->Gspos("YS22", 1, "YGO2", 0., 0., dz, 0, "ONLY");  
  dz+=tpar[2];
// (3)  
  cpar[0]=2.;
  cpar[1]=R21-dRSteel2;
  cpar[2]=zvac6 * TMath::Tan(accMin);
  cpar[3]=cpar[1];
  cpar[4]=cpar[2]+4.*TMath::Tan(accMin);
  gMC->Gsvolu("YS23", "CONE", idtmed[kSteel], cpar, 5);
  dz+=cpar[0];
  gMC->Gspos("YS23", 1, "YGO2", 0., 0., dz, 0, "ONLY");  
  dz+=cpar[0];
//  (4)
  cpar[0]=(zPb-zvac6-4.)/2;
  cpar[2]=cpar[4];
  cpar[4]=cpar[2]+2.*cpar[0]*TMath::Tan(accMin);
  cpar[1]=cpar[2]-dRSteel2;
  cpar[3]=cpar[4]-dRSteel2;

  gMC->Gsvolu("YS24", "CONE", idtmed[kSteel], cpar, 5);
  dz+=cpar[0];
  gMC->Gspos("YS24", 1, "YGO2", 0., 0., dz, 0, "ONLY");  
  dz+=cpar[0];

//  (5)
  cpar[0]=(zConeE-zPb)/2;
  cpar[2]=cpar[4];
  cpar[4]=cpar[2]+2.*cpar[0]*TMath::Tan(accMin);
  cpar[1]=cpar[2]-dRSteel2;
  cpar[3]=cpar[4]-dRSteel2;

  gMC->Gsvolu("YS25", "CONE", idtmed[kSteel], cpar, 5);
  dz=-dlPb+cpar[0];
  gMC->Gspos("YS25", 1, "YXO2", 0., 0., dz, 0, "ONLY");  
  dz+=cpar[0];
// (6)
  tpar[0]=26.;
  tpar[1]=30.;
  tpar[2]=(zvac7-zConeE)/2.;

  gMC->Gsvolu("YS26", "TUBE", idtmed[kSteel], tpar, 3);
  dz+=tpar[2];
  gMC->Gspos("YS26", 1, "YXO2", 0., 0., dz, 0, "ONLY");  
  dz = -tpar[2];

// Recess in steel for station 3
//
  tpar[0]=29.;
  tpar[1]=30.;
  tpar[2]=(zch32-zch31)/2.;
  gMC->Gsvolu("YS27", "TUBE", idtmed[kAir], tpar, 3);
  dz+=(tpar[2]+zch31-zConeE);
  
  gMC->Gspos("YS27", 1, "YS26", 0., 0., dz, 0, "ONLY");  

//
//
// 2nd section: vacuum system 
//
  cpar0[0]=(zvac7-zvac4)/2;
  cpar0[1]=r2V;
  cpar0[2]=r2V+dVacuS;
  cpar0[3]=cpar0[1]+2.*cpar0[0]*TMath::Tan(thetaOpenB);
  cpar0[4]=cpar0[2]+2.*cpar0[0]*TMath::Tan(thetaOpenB);
  gMC->Gsvolu("YV21", "CONE", idtmed[kSteel+40], cpar0, 5);
//
// insulation
  cpar[0]=cpar0[0];
  cpar[1]=cpar0[1]+dTubeS;
  cpar[2]=cpar0[1]+dTubeS+dInsuS;
  cpar[3]=cpar0[3]+dTubeS;
  cpar[4]=cpar0[3]+dTubeS+dInsuS;
  gMC->Gsvolu("YI21", "CONE", idtmed[kInsulation+40], cpar, 5);
  gMC->Gspos("YI21", 1, "YV21", 0., 0., 0., 0, "ONLY"); 
//
// clearance
  cpar[1]=cpar0[1]+dTubeS+dInsuS+dEnveS;
  cpar[2]=cpar0[1]+dTubeS+dInsuS+dEnveS+dFreeS;
  cpar[3]=cpar0[3]+dTubeS+dInsuS+dEnveS;
  cpar[4]=cpar0[3]+dTubeS+dInsuS+dEnveS+dFreeS;
  gMC->Gsvolu("YP21", "CONE", idtmed[kAir+40], cpar, 5);
  gMC->Gspos("YP21", 1, "YV21", 0., 0., 0., 0, "ONLY"); 
  
  dz=0.;
  gMC->Gspos("YV21", 1, "YMO2", 0., 0., dz, 0, "ONLY"); 


//
// Third Section: Bellows and Flange 
//
  par3[0]  = 0.;
  par3[1]  = 360.;
  par3[2]  = 8.;
  dl=(zvac9-zvac7)/2.;
  
  par3[3]  = -dl;
  par3[4]  = r2+(zvac7-zvac3) * TMath::Tan(thetaOpen2);
  par3[5]  = 30.;

  par3[6]  = -dl+dr21;
  par3[7]  = par3[4]+dr21;
  par3[8]  = 30.;

  par3[9]  = par3[6]+dB2;
  par3[10] = par3[7];
  par3[11] = 30.;

  par3[12] = par3[9]+dr22;
  par3[13] = par3[10]+dr22;
  par3[14] = 30.;

  par3[15] = par3[12]+dF2;
  par3[16] = par3[13];
  par3[17] = 30.;

  par3[18] = par3[15]+dr22;
  par3[19] = par3[16]-dr22;
  par3[20] = 30.;

  par3[21] = par3[18]+dB2;
  par3[22] = par3[19];
  par3[23] = 30.;

  par3[24] = par3[21]+dr23;
  par3[25] = par3[22];
  par3[26] = 30.;
//
  rBox=par3[22]-0.1;
  Float_t r3=par3[25];
  
  gMC->Gsvolu("YGO3", "PCON", idtmed[iHeavy+40], par3, 27);

// begin Fluka
  Float_t rflukaPb[8];
  for (ifl=0; ifl<8; ifl++) {
      zfluka[ifl]=par3[3+3*ifl]+dl+zvac7;
      rflukaPb[ifl]= 15.+(zfluka[ifl]-zvac4)*TMath::Tan(thetaOpenPb);
      rfluka1[ifl] = par3[4+3*ifl];
      rfluka2[ifl] = par3[5+3*ifl]-4.; 
      rfluka3[ifl] = par3[5+3*ifl]; 
      rfvacu0[ifl] = 0.;
  }
  for (i=0; i<8; i++) rfluka0[i]=rBox;
  rfluka0[0]=0.; rfluka0[7]=0.;

  flukaGeom->Comment("3rd part: Shield");
  flukaGeom->PolyCone(rflukaPb, rfluka2,  zfluka, 8, posfluka, "LEAD", "MF", "$SHS");

  if (fPbCone) {
      flukaGeom->PolyCone(rfluka1,  rflukaPb, zfluka, 8, posfluka, "LEAD", "MF", "$SHS");
  } else {
      flukaGeom->PolyCone(rfluka1,  rflukaPb, zfluka, 8, posfluka, "NIW", "MF", "$SHS");
  }
  
  flukaGeom->Comment("3rd part: Steel envelope");
  flukaGeom->PolyCone(rfluka2, rfluka3, zfluka, 8, posfluka, "STEEL", "MF", "$SHS");
  flukaGeom->Comment("3rd part: Vacuum");
  flukaGeom->PolyCone(rfluka0+1, rfluka1+1, zfluka+1, 6, posfluka, "AIR", "MF", "$SHH");
  flukaGeom->Comment("3rd part: Beam Pipe (left)");
  
  rf1[0]=0.; rf2[0]=0.;
  rf1[1] = r3V;
  rf2[1] = rf1[1]+dr21*TMath::Tan(thetaOpenB);
  rf1[2]=rf1[1]+dTubeS; rf1[3]=rf1[2]+dInsuS; rf1[4]=rf1[3]+dEnveS;
  rf1[5]=rf1[4]+dFreeS; rf1[6]= rf1[5]+dProtS; rf1[7]=par3[4];
  rf2[2]=rf2[1]+dTubeS; rf2[3]=rf2[2]+dInsuS; rf2[4]=rf2[3]+dEnveS; 
  rf2[5]=rf2[4]+dFreeS; rf2[6]=rf2[5]+dProtS;  rf2[7]=rf1[7]+dr21;
  flukaGeom->OnionCone(rf1, rf2,  8 , zvac7, zvac7+dr21, posfluka, materialsB, fieldsB, cutsB);
  
  
  flukaGeom->Comment("3rd part: Beam Pipe (right)");
  
  rf1[0]=0.;
  rf1[1] = par3[25]-dr23; 
  rf1[2]=rf1[1]+dTubeS; rf1[3]=rf1[2]+dInsuS; rf1[4]=rf1[3]+dEnveS;
  rf1[5]=rf1[4]+dFreeS; rf1[6]=par3[25]; 
  flukaGeom->OnionCylinder(rf1,  7 , zvac9-dr23, zvac9, posfluka, materialsA, fieldsA, cutsA);

//
  flukaGeom->Comment("First Bellow");
  z1=zvac7+dr21;
  
  for (i=0; i<7; i++) {
      z2=z1+eB2;
      flukaGeom->Cylinder(0., rB2, z1, z2, posfluka, "VACUUM", "MF", "$SHH");
      flukaGeom->Cylinder(rB2, rB2+hB2, z1, z2, posfluka, "STEEL", "MF", "$SHH");
      
      z1=z2;
      z2+=lB2/2.-eB2;
      flukaGeom->Cylinder(0., rB2+hB2-eB2, z1, z2, posfluka, "VACUUM", "MF", "$SHH");
      flukaGeom->Cylinder(rB2+hB2-eB2, rB2+hB2, z1, z2, posfluka, "STEEL", "MF", "$SHH");
      z1=z2;
      z2=z1+eB2;
      flukaGeom->Cylinder(0., rB2, z1, z2, posfluka, "VACUUM", "MF", "$SHH");
      flukaGeom->Cylinder(rB2, rB2+hB2, z1, z2, posfluka, "STEEL", "MF", "$SHH");
      z1=z2;
      z2+=lB2/2.-eB2;
      flukaGeom->Cylinder(0., rB2, z1, z2, posfluka, "VACUUM", "MF", "$SHH");
      flukaGeom->Cylinder(rB2, rB2+eB2, z1, z2, posfluka, "STEEL", "MF", "$SHH");
      flukaGeom->Cylinder(rB2+eB2, rB2+hB2, z1, z2, posfluka, "AIR", "MF", "$SHH");
      z1=z2;
   }
  flukaGeom->Cylinder(rB2+hB2, rB2+hB2+0.2, zvac7+dr21, z1, posfluka, "AIR", "MF", "$SHH");
  flukaGeom->Cylinder(rB2+hB2+0.2, rBox, zvac7+dr21, z1, posfluka, "AIR", "MF", "$SHH");
  zcy1=z1;
  

  flukaGeom->Comment("Second Bellow");
  z1=zvac9-dr23;
  for (i=0; i<7; i++) {
      z2=z1-eB2;
      flukaGeom->Cylinder(0., rB2, z2, z1, posfluka, "VACUUM", "MF", "$SHH");
      flukaGeom->Cylinder(rB2, rB2+hB2, z2, z1, posfluka, "STEEL", "MF", "$SHH");
      z1=z2;
      z2-=lB2/2.-eB2;
      flukaGeom->Cylinder(0., rB2+hB2-eB2, z2, z1, posfluka, "VACUUM", "MF", "$SHH");
      flukaGeom->Cylinder(rB2+hB2-eB2, rB2+hB2, z2, z1, posfluka, "STEEL", "MF", "$SHH");
      z1=z2;
      z2=z1-eB2;
      flukaGeom->Cylinder(0., rB2, z2, z1, posfluka, "VACUUM", "MF", "$SHH");
      flukaGeom->Cylinder(rB2, rB2+hB2, z2, z1, posfluka, "STEEL", "MF", "$SHH");
      z1=z2;
      z2-=lB2/2.-eB2;
      flukaGeom->Cylinder(0., rB2, z2, z1, posfluka, "VACUUM", "MF", "$SHH");
      flukaGeom->Cylinder(rB2, rB2+eB2, z2, z1, posfluka, "STEEL", "MF", "$SHH");
      flukaGeom->Cylinder(rB2+eB2, rB2+hB2, z2, z1, posfluka, "AIR", "MF", "$SHH");
      z1=z2;
   }
  flukaGeom->Cylinder(rB2+hB2, rB2+hB2+0.2, z1, zvac9-dr23, posfluka, "AIR", "MF", "$SHH");
  flukaGeom->Cylinder(rB2+hB2+0.2, rBox,    z1, zvac9-dr23, posfluka, "AIR", "MF", "$SHH");

  zcy2=z1;
  flukaGeom->Comment("Flange");
  zfl=(zcy1+zcy2)/2.;

  z1=zfl-dF2/2.;
  z2=zfl+dF2/2.;  
  flukaGeom->Cylinder(0.,rF2-2.,   z1, z2, posfluka, "VACUUM", "MF", "$SHH");
  flukaGeom->Cylinder(rF2-2., rF2, z1, z2, posfluka, "STEEL", "MF", "$SHH");
  flukaGeom->Cylinder(rF2, rF2+0.02     , z1, z2, posfluka, "AIR", "MF", "$SHH");
  flukaGeom->Cylinder(rF2+0.02, rBox    , z1, z2, posfluka, "AIR", "MF", "$SHH");
  z2=z1;
  z1=z2-dFlange;
  flukaGeom->Cylinder(0.,rB2           , z1, z2, posfluka, "VACUUM", "MF", "$SHH");
  flukaGeom->Cylinder(rB2, rF2         , z1, z2, posfluka, "STEEL", "MF", "$SHH");
  flukaGeom->Cylinder(rF2, rF2+0.2     , z1, z2, posfluka, "AIR", "MF", "$SHH");
  flukaGeom->Cylinder(rF2+0.2, rBox    , z1, z2, posfluka, "AIR", "MF", "$SHH");
  z2=z1;
  z1=zcy1;
  flukaGeom->Cylinder(0.,rB2           , z1, z2, posfluka, "VACUUM", "MF", "$SHH");
  flukaGeom->Cylinder(rB2, rB2+0.1     , z1, z2, posfluka, "STEEL", "MF", "$SHH");
  flukaGeom->Cylinder(rB2+0.1, rB2+0.2 , z1, z2, posfluka, "AIR", "MF", "$SHH");
  flukaGeom->Cylinder(rB2+0.2, rBox    , z1, z2, posfluka, "AIR", "MF", "$SHH");

  z1=zfl+dF2/2.;
  z2=z1+dFlange;
  flukaGeom->Cylinder(0.,rB2           , z1, z2, posfluka, "VACUUM", "MF", "$SHH");
  flukaGeom->Cylinder(rB2, rF2         , z1, z2, posfluka, "STEEL", "MF", "$SHH");
  flukaGeom->Cylinder(rF2, rF2+0.2     , z1, z2, posfluka, "AIR", "MF", "$SHH");
  flukaGeom->Cylinder(rF2+0.2, rBox    , z1, z2, posfluka, "AIR", "MF", "$SHH");
  z1=z2;
  z2=zcy2;
  flukaGeom->Cylinder(0.,rB2           , z1, z2, posfluka, "VACUUM", "MF", "$SHH");
  flukaGeom->Cylinder(rB2, rB2+0.1     , z1, z2, posfluka, "STEEL", "MF", "$SHH");
  flukaGeom->Cylinder(rB2+0.1, rB2+0.2 , z1, z2, posfluka, "AIR", "MF", "$SHH");
  flukaGeom->Cylinder(rB2+0.2, rBox    , z1, z2, posfluka, "AIR", "MF", "$SHH");
//
// end Fluka

  parPb[0]  = dl;
  parPb[1]  = rPbLast;
  parPb[2]  = 30;
  parPb[3]  = parPb[1]+2.*dl*TMath::Tan(thetaOpenPb);
  parPb[4]  = 30;
  gMC->Gsvolu("YXO3", "CONE", idtmed[kPb], parPb, 5);
  gMC->Gspos("YXO3", 1, "YGO3", 0., 0., 0., 0, "ONLY");  

  for (i=4; i<26; i+=3) par3[i]  = 0;

  gMC->Gsvolu("YMO3", "PCON", idtmed[kVacuum+40], par3, 27);
  gMC->Gspos("YGO3", 1, "YMO3", 0., 0., 0., 0, "ONLY");  

//
// Steel envelope
  tpar[0]=26;
  tpar[1]=30;
  tpar[2]=dl;
  gMC->Gsvolu("YS31", "TUBE", idtmed[kSteel], tpar, 3);
  gMC->Gspos("YS31", 1, "YXO3", 0., 0., 0., 0, "ONLY");  
  dZ+=dl;
  gMC->Gspos("YMO3", 1, "YMOT", 0., 0., dZ, 0, "ONLY");  
  dZ+=dl;

//
// 3rd section: vacuum system
//
//
// Bellow2
//
  tpar[0]=rB2;
  tpar[1]=rB2+hB2;
  tpar[2]=eB2/2.;
  gMC->Gsvolu("YB21", "TUBE", idtmed[kSteel+40], tpar, 3);
  dl1=tpar[2];
  
  tpar[0]=rB2+hB2-eB2;
  tpar[1]=rB2+hB2;
  tpar[2]=(lB2/2.-2.*eB2)/2.;
  gMC->Gsvolu("YB22", "TUBE", idtmed[kSteel+40], tpar, 3);
  dl2=tpar[2];

  tpar[0]=rB2-eB2;
  tpar[1]=rB2;
  tpar[2]=lB2/8.;
  gMC->Gsvolu("YB23", "TUBE", idtmed[kSteel+40], tpar, 3);
  dl3=tpar[2];


  tpar[0]=0;
  tpar[1]=rB2+hB2;
  tpar[2]=lB2/2.;
  gMC->Gsvolu("YBU2", "TUBE", idtmed[kVacuum+40], tpar, 3);

  dz=-tpar[2]+dl3;
  gMC->Gspos("YB23", 1, "YBU2", 0., 0., dz, 0, "ONLY"); 
  dz+=dl3;
  dz+=dl1;  
  gMC->Gspos("YB21", 1, "YBU2", 0., 0., dz, 0, "ONLY"); 
  dz+=dl1;  
  dz+=dl2;  
  gMC->Gspos("YB22", 1, "YBU2", 0., 0., dz, 0, "ONLY"); 
  dz+=dl2;  
  dz+=dl1;
  gMC->Gspos("YB21", 2, "YBU2", 0., 0., dz, 0, "ONLY"); 
  dz+=dl1;
  dz+=dl3;
  gMC->Gspos("YB23", 2, "YBU2", 0., 0., dz, 0, "ONLY"); 
  

  tpar[0]=0;
  tpar[1]=rB2+hB2;
  tpar[2]=7.*lB2/2.;
  gMC->Gsvolu("YBM2", "TUBE", idtmed[kVacuum+40], tpar, 3);
  dz=-tpar[2]+lB2/2.;

  for (i=0; i<7; i++) {
    gMC->Gspos("YBU2", i+1 , "YBM2", 0., 0.,dz , 0, "ONLY"); 
    dz+=lB2;
  }

  dz=-dl+dr21+tpar[2];
  gMC->Gspos("YBM2", 1, "YMO3", 0., 0., dz, 0, "ONLY"); 

  dz=dl-dr23-tpar[2];
  gMC->Gspos("YBM2", 2, "YMO3", 0., 0., dz, 0, "ONLY"); 

//
// Flange

  tpar[0]=0;
  tpar[1]=rF2;
  tpar[2]=dF2/2.;
  gMC->Gsvolu("YFM2", "TUBE", idtmed[kVacuum+40], tpar, 3);

  tpar[0]=rF2-2.;
  tpar[1]=rF2;
  tpar[2]=dF2/2.;
  gMC->Gsvolu("YF21", "TUBE", idtmed[kSteel+40], tpar, 3);
  gMC->Gspos("YF21", 1, "YFM2", 0., 0., 0., 0, "ONLY"); 

  tpar[0]=rB2;
  tpar[1]=rF2-2.;
  tpar[2]=dFlange/2.;
  gMC->Gsvolu("YF22", "TUBE", idtmed[kSteel+40], tpar, 3);
  dz=-dF2/2.+tpar[2];
  gMC->Gspos("YF22", 1, "YFM2", 0., 0., dz, 0, "ONLY"); 
  dz= dF2/2.-tpar[2];
  gMC->Gspos("YF22", 2, "YFM2", 0., 0., dz, 0, "ONLY"); 

  dz=dr21/2.-dr23/2.;
  gMC->Gspos("YFM2", 2, "YMO3", 0., 0., dz, 0, "ONLY"); 


//
// pipe between flange and bellows
  tpar[0]=rB2-dTubeS;
  tpar[1]=rB2;
  tpar[2]=2.*(dB2+dr22-7.*lB2)/4.;
  gMC->Gsvolu("YPF2", "TUBE", idtmed[kSteel+40], tpar, 3);
  dz=dr21/2.-dr23/2.-dF2/2.-tpar[2];
  gMC->Gspos("YPF2", 1, "YMO3", 0., 0., dz, 0, "ONLY"); 
  dz=dr21/2.-dr23/2.+dF2/2.+tpar[2];
  gMC->Gspos("YPF2", 2, "YMO3", 0., 0., dz, 0, "ONLY"); 

  Float_t dHorZ=55.;
  
//
// 4th section: rear shield and closing cone
//
  par4[0]  = 0.;
  par4[1]  = 360.;
  par4[2]  = 7.;
  dl=(zvac12-zvac9)/2.;
  
  par4[3]  = -dl;
  par4[4]  = r3;
  par4[5]  = 30.;

  par4[6]  = -dl+dHorZ;
  par4[7]  = r3;
  par4[8]  = 30.;

  par4[9]  = -dl+(zvac10-zvac9);
  par4[10]  = r3+(zvac10-zvac9-dHorZ) * TMath::Tan(thetaOpen3);
  par4[11]  = 30.;

  par4[12]  = par4[9];
  par4[13] = par4[10];
  par4[14] = R42;

  par4[15] = -dl+(zvac11-zvac9);
  par4[16] = r3+(zvac11-zvac9-dHorZ) * TMath::Tan(thetaOpen3);
  par4[17] = R42;

  par4[18] = par4[15];
  par4[19] = par4[16];
  par4[20] = R43;

  par4[21] = -dl+(zvac12-zvac9);
  par4[22] = rAbs;
  par4[23] = R43;

  gMC->Gsvolu("YGO4", "PCON", idtmed[iHeavy+40], par4, 24);

  parPb[0]  = (zvac10-zvac9)/2.;
  parPb[1]  = parPb[3];
  parPb[2]  = 30;
  parPb[3]  = parPb[1]+2.*parPb[0]*TMath::Tan(thetaOpenPb);
  parPb[4]  = 30;
  gMC->Gsvolu("YXO4", "CONE", idtmed[kPb], parPb, 5);
  gMC->Gspos("YXO4", 1, "YGO4", 0., 0., -dl+parPb[0], 0, "ONLY");  

  parPb[0]  = (zvac12-zvac10)/2.;
  parPb[1]  = parPb[3];
  parPb[2]  = 31.;
  parPb[3]  = parPb[1]+2.*parPb[0]*TMath::Tan(thetaOpenPb);
  parPb[4]  = 31.;
  gMC->Gsvolu("YXO5", "CONE", idtmed[kPb], parPb, 5);
  gMC->Gspos("YXO5", 1, "YGO4", 0., 0., -dl+(zvac10-zvac9)+parPb[0], 0, "ONLY");  

  for (i=4; i<23; i+=3) par4[i]  = 0;

  gMC->Gsvolu("YMO4", "PCON", idtmed[kVacuum+40], par4, 24);
  gMC->Gspos("YGO4", 1, "YMO4", 0., 0., 0., 0, "ONLY");  



  dZ+=dl;
  gMC->Gspos("YMO4", 1, "YMOT", 0., 0., dZ, 0, "ONLY");  
  dZ+=dl;
//
// Closing concrete cone 
//
  cpar[0]=(zvac12-zvac11)/2.;
  cpar[1] = r3+(zvac11-zvac9-dHorZ) * TMath::Tan(thetaOpen3);
  cpar[2] = cpar[1]+0.001;
  cpar[3] = rAbs;
  cpar[4] = cpar[2];
  gMC->Gsvolu("YCC4", "CONE", idtmed[kConcrete+40], cpar, 5);
  dz=dl-cpar[0];
  gMC->Gspos("YCC4", 1, "YGO4", 0., 0., dz, 0, "ONLY");  

//
// begin Fluka
  Float_t r10=r3+(zvac10-zvac9-dHorZ) * TMath::Tan(thetaOpen3);
  Float_t r11=cpar[1];

  Float_t rPb0=15.+(zvac9-zvac4)* TMath::Tan(thetaOpenPb);
  Float_t rPb1=15.+(zvac9+dHorZ-zvac4)* TMath::Tan(thetaOpenPb);
  Float_t rPb2=15.+(zvac10-zvac4)* TMath::Tan(thetaOpenPb);
  flukaGeom->Comment("4th part: Shield");
  
  flukaGeom->Cone(rPb0, rPb1, 26.0, 26.0, zvac9,  zvac9+dHorZ, 
	      posfluka, "LEAD", "NF", "$SHH");
  if (fPbCone) {
      flukaGeom->Cone(r3, r3, rPb0, rPb1, zvac9,  zvac9+dHorZ, 
		  posfluka, "LEAD", "NF", "$SHS");
  } else {
      flukaGeom->Cone(r3, r3, rPb0, rPb1, zvac9,  zvac9+dHorZ, 
		  posfluka, "NIW", "NF", "$SHS");
  }

  flukaGeom->Cone(rPb1, rPb2, 26.0, 26.0, zvac9+dHorZ,  zvac10, 
	      posfluka, "LEAD", "NF", "$SHH");
  if (fPbCone) {
      flukaGeom->Cone(r3, r10, rPb1, rPb2, zvac9+dHorZ,  zvac10, 
		  posfluka, "LEAD", "NF", "$SHS");
  } else {
      flukaGeom->Cone(r3, r10, rPb1, rPb2, zvac9+dHorZ,  zvac10, 
		  posfluka, "NIW", "NF", "$SHS");
  }
  
  
  rPb1=rPb2;
  rPb2=15.+(zvac11-zvac4)* TMath::Tan(thetaOpenPb);
  flukaGeom->Cone(rPb1, rPb2, 30.0, 30.0, zvac10,  zvac11, 
	      posfluka, "LEAD", "NF", "$SHH");
 if (fPbCone) {
     flukaGeom->Cone(r10, r11, rPb1, rPb2, zvac10,  zvac11, 
		 posfluka, "LEAD", "NF", "$SHH");
 } else {
     flukaGeom->Cone(r10, r11, rPb1, rPb2, zvac10,  zvac11, 
		 posfluka, "NIW", "NF", "$SHH");
 }
 
  flukaGeom->Cylinder( rPb2, 30.0, zvac11, zvac12, 
	      posfluka, "LEAD", "NF", "$SHH");
 if (fPbCone) {
     flukaGeom->Cylinder( cpar[1], rPb2, zvac11, zvac12, 
		      posfluka, "LEAD", "NF", "$SHH");
 } else {
     flukaGeom->Cylinder( cpar[1], rPb2, zvac11, zvac12, 
		      posfluka, "NIW", "NF", "$SHH");
 }
 
  flukaGeom->Comment("4th part: Steel Envelope");
  flukaGeom->Cylinder(26.0, 30., zvac9, zvac10, posfluka, "STEEL", "NF", "$SHH");
  flukaGeom->Comment("4th part: Closing Cone");
  flukaGeom->Cone(cpar[1]-0.1, cpar[3], cpar[1], cpar[1], zvac11, zvac12, 
	      posfluka, "PORTLAND", "NF", "$SHH");
  flukaGeom->Comment("4th part: VACUUM");
  flukaGeom->Cone(0., 0., cpar[1]-0.1, cpar[3], zvac11, zvac12, 
	      posfluka, "VACUUM", "NF", "$SHH");
//
// end Fluka

//
// Steel envelope
//
  dz=-dl;
  tpar[0]=26.;
  tpar[1]=30.;
  tpar[2]=(zvac10-zvac9)/2.;
  gMC->Gsvolu("YS41", "TUBE", idtmed[kSteel], tpar, 3);
  dz+=tpar[2];
  gMC->Gspos("YS41", 1, "YXO4", 0., 0., 0., 0, "ONLY");  
  dz+=tpar[2];
/*
  tpar[0]=30.;
  tpar[1]=R41;
  tpar[2]=2.;
  gMC->Gsvolu("YS42", "TUBE", idtmed[kSteel], tpar, 3);
  dz+=tpar[2];
  gMC->Gspos("YS42", 1, "YGO4", 0., 0., dz, 0, "ONLY");  
  dz+=tpar[2];
*/
  tpar[0]=R41-dRSteel2;
  tpar[1]=R41;
  tpar[2]=(zvac11-zvac10)/2.;
  gMC->Gsvolu("YS43", "TUBE", idtmed[kSteel], tpar, 3);
  dz+=tpar[2];
  gMC->Gspos("YS43", 1, "YGO4", 0., 0., dz, 0, "ONLY");  
//
// rear lead shield
//
  tpar[0]=R41;
  tpar[1]=R42;
  tpar[2]=(zvac11-zvac10)/2.;
  gMC->Gsvolu("YPBI", "TUBE", idtmed[kPb+40], tpar, 3);
  dz-=0;
  gMC->Gspos("YPBI", 1, "YGO4", 0., 0., dz, 0, "ONLY"); 

  tpar[0]=R42-5;
  tpar[1]=R42;
  tpar[2]=(zvac11-zvac10)/2.;
  gMC->Gsvolu("YPBO", "TUBE", idtmed[kPb], tpar, 3);
  gMC->Gspos("YPBO", 1, "YPBI", 0., 0., 0., 0, "ONLY"); 
  
//
// rear Fe shield
//

  tpar[0]=31.;
  tpar[1]=R43;
  tpar[2]=(zvac12-zvac11)/2.;
  gMC->Gsvolu("YFEI", "TUBE", idtmed[kFe+40], tpar, 3);
  dz=dl-tpar[2];
  gMC->Gspos("YFEI", 1, "YGO4", 0., 0., dz, 0, "ONLY"); 

  tpar[0]=31.;
  tpar[1]=R43;
  tpar[2]=2.5;
  gMC->Gsvolu("YFEO", "TUBE", idtmed[kFe], tpar, 3);
  dz=-(zvac12-zvac11)/2.+tpar[2];
  gMC->Gspos("YFEO", 1, "YFEI", 0., 0., dz, 0, "ONLY"); 
//
// Magnet element 
//
  tpar[0]=0.;
  tpar[1]=R43;
  tpar[2]=50.;
  gMC->Gsvolu("YAEM", "TUBE", idtmed[kAir], tpar, 3);
  tpar[0]=rAbs;
  tpar[1]=R43;
  tpar[2]=50.;
  gMC->Gsvolu("YFEM", "TUBE", idtmed[kFe], tpar, 3);
  gMC->Gspos("YFEM", 1, "YAEM", 0., 0., 0., 0, "ONLY"); 

//

  dz=zvac12+50.;
  gMC->Gspos("YAEM", 1, "ALIC", 0., 0., dz, 0, "ONLY"); 


// 
//
// 4th section: vacuum system 
//
// up to closing cone
  r3V=r3-dr23+dVacuS;

  cpar0[0]=(zvac11-zvac9)/2;
  cpar0[1]=r3V-dVacuS;
  cpar0[2]=r3V;
  cpar0[3]=cpar0[1]+2.*cpar0[0]*TMath::Tan(thetaOpen3);
  cpar0[4]=cpar0[2]+2.*cpar0[0]*TMath::Tan(thetaOpen3);
  gMC->Gsvolu("YV31", "CONE", idtmed[kSteel+40], cpar0, 5);
//
// insulation
  cpar[0]=cpar0[0];
  cpar[1]=cpar0[1]+dTubeS;
  cpar[2]=cpar0[1]+dTubeS+dInsuS;
  cpar[3]=cpar0[3]+dTubeS;
  cpar[4]=cpar0[3]+dTubeS+dInsuS;
  gMC->Gsvolu("YI31", "CONE", idtmed[kInsulation+40], cpar, 5);
  gMC->Gspos("YI31", 1, "YV31", 0., 0., 0., 0, "ONLY"); 
//
// clearance
  cpar[1]=cpar0[2]-dProtS-dFreeS;
  cpar[2]=cpar0[2]-dProtS;
  cpar[3]=cpar0[4]-dProtS-dFreeS;
  cpar[4]=cpar0[4]-dProtS;
  gMC->Gsvolu("YP31", "CONE", idtmed[kVacuum+40], cpar, 5);
  gMC->Gspos("YP31", 1, "YV31", 0., 0., 0., 0, "ONLY"); 
  
  dz=-dl+cpar[0];
  gMC->Gspos("YV31", 1, "YMO4", 0., 0., dz, 0, "ONLY"); 

//
// begin Fluka
  flukaGeom->Comment("4th part: Beam pipe lateral structure");
  for (i=0; i<7; i++)  fieldsA[i] = "NF";

  rf1[0]=0.;       rf2[0]=0.;

  rf1[1]=cpar0[1]; rf2[1]=rf1[1]+dHorZ*TMath::Tan(thetaOpen3);
  
  rf1[2]=rf1[1]+dTubeS; rf1[3]=rf1[2]+dInsuS; rf1[4]=rf1[3]+dEnveS;
  rf1[5]=rf1[4]+dFreeS; rf1[6]=r3; 

  rf2[2]=rf2[1]+dTubeS; rf2[3]=rf2[2]+dInsuS; rf2[4]=rf2[3]+dEnveS; 
  rf2[5]=rf2[4]+dFreeS; rf2[6]=r3;

  flukaGeom->OnionCone(rf1, rf2,  7 , zvac9 , zvac9+dHorZ, posfluka, materialsA, fieldsA, cutsA);

  rf1[0]=0.;       rf2[0]=0.;

  rf1[1]=rf2[1]; rf2[1]=rf1[1]+(zvac10-zvac9-dHorZ)*TMath::Tan(thetaOpen3);
  
  rf1[2]=rf1[1]+dTubeS; rf1[3]=rf1[2]+dInsuS; rf1[4]=rf1[3]+dEnveS;
  rf1[5]=rf1[4]+dFreeS; rf1[6]=r3; 

  rf2[2]=rf2[1]+dTubeS; rf2[3]=rf2[2]+dInsuS; rf2[4]=rf2[3]+dEnveS; 
  rf2[5]=rf2[4]+dFreeS; rf2[6]=r10;


  flukaGeom->OnionCone(rf1, rf2,  7 , zvac9+dHorZ, zvac10, posfluka, materialsA, fieldsA, cutsA);

  rf1[0]=0.;       rf2[0]=0.;
  rf1[1]=rf2[1];   rf2[1]=rf1[1]+(zvac11-zvac10)*TMath::Tan(thetaOpen3);

  rf1[2]=rf1[1]+dTubeS; rf1[3]=rf1[2]+dInsuS; rf1[4]=rf1[3]+dEnveS;
  rf1[5]=rf1[4]+dFreeS; rf1[6]=r10; 
  rf2[2]=rf2[1]+dTubeS; rf2[3]=rf2[2]+dInsuS; rf2[4]=rf2[3]+dEnveS; 
  rf2[5]=rf2[4]+dFreeS; rf2[6]=r11;

  flukaGeom->OnionCone(rf1, rf2,  7 , zvac10, zvac11, posfluka, materialsA, fieldsA, cutsA);
//  
// end Fluka

//
// closing cone
  cpar0[0]=(zvac12-zvac11)/2;
  cpar0[1]=r3V-dVacuS+(zvac11-zvac9)*TMath::Tan(thetaOpen3);
  cpar0[2]=r3V       +(zvac11-zvac9)*TMath::Tan(thetaOpen3);
  cpar0[3]=rVacu;
  cpar0[4]=rVacu+dTubeS+dInsuS+dProtS+dFreeS;
  gMC->Gsvolu("YV32", "CONE", idtmed[kSteel+40], cpar0, 5);
//
// insulation
  cpar[0]=cpar0[0];
  cpar[1]=cpar0[1]+dTubeS;
  cpar[2]=cpar0[1]+dTubeS+dInsuS;
  cpar[3]=cpar0[3]+dTubeS;
  cpar[4]=cpar0[3]+dTubeS+dInsuS;
  gMC->Gsvolu("YI32", "CONE", idtmed[kInsulation+40], cpar, 5);
  gMC->Gspos("YI32", 1, "YV32", 0., 0., 0., 0, "ONLY"); 
//
// clearance
  cpar[1]=cpar0[2]-dProtS-dFreeS;
  cpar[2]=cpar0[2]-dProtS;
  cpar[3]=cpar0[4]-dProtS-dFreeS;
  cpar[4]=cpar0[4]-dProtS;
  gMC->Gsvolu("YP32", "CONE", idtmed[kVacuum+40], cpar, 5);
  gMC->Gspos("YP32", 1, "YV32", 0., 0., 0., 0, "ONLY"); 
  
  dz=dl-cpar[0];
  gMC->Gspos("YV32", 1, "YMO4", 0., 0., dz, 0, "ONLY"); 
//
//
// MUON trigger wall
//  
  tpar[0] = 50.;
  tpar[1] = 310.;
  tpar[2] = (zFilterOut - zFilterIn) / 2.;
  gMC->Gsvolu("YFIM", "TUBE", idtmed[kFe+40], tpar, 3);
  dz = (zFilterIn + zFilterOut) / 2.;
  tpar[2] -= 10.;
  gMC->Gsvolu("YFII","TUBE", idtmed[kFe], tpar, 3);
  gMC->Gspos("YFII", 1, "YFIM", 0., 0., 0., 0, "ONLY");
  gMC->Gspos("YFIM", 1, "ALIC", 0., 0., dz, 0, "ONLY");
//
// Shielding close to chamber
//
//
  cpar[0]=(zch11-zRear)/2.;
  cpar[1]=R11;
  cpar[2]=zRear*TMath::Tan(accMin);
  cpar[3]=R11;
  cpar[4]=(zRear+2.*cpar[0])*TMath::Tan(accMin);
  gMC->Gsvolu("YCS1", "CONE", idtmed[kNiCuW], cpar, 5);
  dz=zRear+cpar[0];
  gMC->Gspos("YCS1", 1, "ALIC", 0., 0., dz, 0, "ONLY");

  cpar[0]=(zvac4-zch12)/2.;
  cpar[1]=R11;
  cpar[2]=zch12*TMath::Tan(accMin);
  cpar[3]=R11;
  cpar[4]=(zch12+2.*cpar[0])*TMath::Tan(accMin);
  gMC->Gsvolu("YCS3", "CONE", idtmed[kNiCuW], cpar, 5);
  dz=zvac4-cpar[0];
  gMC->Gspos("YCS3", 1, "ALIC", 0., 0., dz, 0, "ONLY");


// Recess station 1

  cpar[0]=(zch12-zch11)/2.;
  cpar[1]=R11;
  cpar[2]=18.;
  cpar[3]=R11;
  cpar[4]=17.9;
  gMC->Gsvolu("YCS2", "CONE", idtmed[kAir], cpar, 5);
  dz=zch11+cpar[0];
  gMC->Gspos("YCS2", 1, "ALIC", 0., 0., dz, 0, "ONLY");

  Float_t ptubs[5];
  ptubs[0] = R11;
  ptubs[1] = 17.9;
  ptubs[2] =   0.;
// phi_min, phi_max
  ptubs[3] =   0.;
  ptubs[4] =  90.;  
  gMC->Gsvolu("YCR0", "TUBS", idtmed[kNiCuW], ptubs, 0);
  Int_t idrotm[1799];
  
  AliMatrix(idrotm[1701],90.,   0., 90.,  90., 0., 0.);
  AliMatrix(idrotm[1702],90.,  90., 90., 180., 0., 0.);
  AliMatrix(idrotm[1703],90., 180., 90., 270., 0., 0.); 
  AliMatrix(idrotm[1704],90., 270., 90.,   0., 0., 0.); 
  //  Int_t ipos;
  
  dz=-cpar[0];
// 1.
  ptubs[2]=6.5/2.;
  dz+=ptubs[2];
  gMC->Gsposp("YCR0", 1, "YCS2", 0., 0., dz, idrotm[1701], "ONLY", ptubs, 5);
  gMC->Gsposp("YCR0", 2, "YCS2", 0., 0., dz, idrotm[1703], "ONLY", ptubs, 5);
  dz+=ptubs[2];
  dz+=1.5;
// 2.
  ptubs[2]=5.0/2.;
  dz+=ptubs[2];
  gMC->Gsposp("YCR0", 3, "YCS2", 0., 0., dz, idrotm[1702], "ONLY", ptubs, 5);
  gMC->Gsposp("YCR0", 4, "YCS2", 0., 0., dz, idrotm[1704], "ONLY", ptubs, 5);
  dz+=ptubs[2];
  dz+=1.5;
// 3. 
  ptubs[2]=5.0/2.;
  dz+=ptubs[2];
  gMC->Gsposp("YCR0", 5, "YCS2", 0., 0., dz, idrotm[1701], "ONLY", ptubs, 5);
  gMC->Gsposp("YCR0", 6, "YCS2", 0., 0., dz, idrotm[1703], "ONLY", ptubs, 5);
  dz+=ptubs[2];
  dz+=1.5;
// 4. 
  ptubs[2]=6.5/2.;
  dz+=ptubs[2];
  gMC->Gsposp("YCR0", 7, "YCS2", 0., 0., dz, idrotm[1702], "ONLY", ptubs, 5);
  gMC->Gsposp("YCR0", 8, "YCS2", 0., 0., dz, idrotm[1704], "ONLY", ptubs, 5);
  dz+=ptubs[2];
  dz+=1.5;


  
  cpar[0]=(zch21-zvac4)/2.;
  cpar[1]=R21;
  cpar[2]=zvac4*TMath::Tan(accMin);
  cpar[3]=R21;
  cpar[4]=(zvac4+2.*cpar[0])*TMath::Tan(accMin);
  gMC->Gsvolu("YCS4", "CONE", idtmed[kNiCuW], cpar, 5);
  dz=zvac4+cpar[0];
  gMC->Gspos("YCS4", 1, "ALIC", 0., 0., dz, 0, "ONLY");

  cpar[0]=(zvac6-zch22)/2.;
  cpar[1]=R21;
  cpar[2]=zch22*TMath::Tan(accMin);
  cpar[3]=R21;
  cpar[4]=(zch22+2.*cpar[0])*TMath::Tan(accMin);
  gMC->Gsvolu("YCS6", "CONE", idtmed[kNiCuW], cpar, 5);
  dz=zvac6-cpar[0];
  gMC->Gspos("YCS6", 1, "ALIC", 0., 0., dz, 0, "ONLY");
  
// Recess station 2
 
  cpar[0]=(zch22-zch21)/2.;
  cpar[1]=R21;
  cpar[2]=23.;
  cpar[3]=R21;
  cpar[4]=23.;
  gMC->Gsvolu("YCS5", "CONE", idtmed[kAir], cpar, 5);
  dz=zch21+cpar[0];
  gMC->Gspos("YCS5", 1, "ALIC", 0., 0., dz, 0, "ONLY");

  ptubs[0] = R21;
  ptubs[1] = 23;
  ptubs[2] =   0.;
  ptubs[3] =   0.;
  ptubs[4] =  90.;  
  gMC->Gsvolu("YCR1", "TUBS", idtmed[kNiCuW], ptubs, 0);

  dz=-cpar[0];
// 1.
  ptubs[2]=7.5/2.;
  dz+=ptubs[2];
  gMC->Gsposp("YCR1", 1, "YCS5", 0., 0., dz, idrotm[1701], "ONLY", ptubs, 5);
  gMC->Gsposp("YCR1", 2, "YCS5", 0., 0., dz, idrotm[1703], "ONLY", ptubs, 5);
  dz+=ptubs[2];
  dz+=1.5;
// 2.
  ptubs[2]=6.0/2.;
  dz+=ptubs[2];
  gMC->Gsposp("YCR1", 3, "YCS5", 0., 0., dz, idrotm[1702], "ONLY", ptubs, 5);
  gMC->Gsposp("YCR1", 4, "YCS5", 0., 0., dz, idrotm[1704], "ONLY", ptubs, 5);
  dz+=ptubs[2];
  dz+=1.5;
// 3. 
  ptubs[2]=6.0/2.;
  dz+=ptubs[2];
  gMC->Gsposp("YCR1", 5, "YCS5", 0., 0., dz, idrotm[1701], "ONLY", ptubs, 5);
  gMC->Gsposp("YCR1", 6, "YCS5", 0., 0., dz, idrotm[1703], "ONLY", ptubs, 5);
  dz+=ptubs[2];
  dz+=1.5;
// 4. 
  ptubs[2]=7.5/2.;
  dz+=ptubs[2];
  gMC->Gsposp("YCR1", 7, "YCS5", 0., 0., dz, idrotm[1702], "ONLY", ptubs, 5);
  gMC->Gsposp("YCR1", 8, "YCS5", 0., 0., dz, idrotm[1704], "ONLY", ptubs, 5);
  dz+=ptubs[2];
  dz+=1.5;


//
// begin Fluka
  flukaGeom->Cone(R11, R11, -1.,  -1., 
		  zRear, zch11, posfluka,"NIW", "MF", "$SHS");

  flukaGeom->Cone(R11, R11, -1.,  -1., 
		  zch11, zch12, posfluka,"AIR", "MF", "$SHS");

  flukaGeom->Cone(R11, R11, -1.,  -1., 
		  zch12, zvac4, posfluka,"NIW", "MF", "$SHS");

  flukaGeom->Cone(R21, R21, -1.,  -1., 
	          zvac4, zch21, posfluka,"NIW", "MF", "$SHS");
  flukaGeom->Cone(R21, R21, -1.,  -1., 
	          zch21, zch22, posfluka,"AIR", "MF", "$SHS");
  flukaGeom->Cone(R21, R21, -1.,  -1., 
	          zch22, zvac6, posfluka,"NIW", "MF", "$SHS");


  flukaGeom->Finish();

// 
// end Fluka
//
// Outer Pb Cone

  if (fPbCone) {

      par0[0]  = 0.;
      par0[1]  = 360.;
      par0[2]  = 10.;
/*
//    start of cone
      par0[3]  = zConeE;
      par0[4]  = 30.;
      par0[5]  = 30.01;
//    3rd station
      par0[6]  = zch31;
      par0[7]  = 30.;
      par0[8]  = 30.+(zch31-zConeE)*TMath::Tan(thetaOpenPbO);

      par0[9]   = zch31;
      par0[10]  = 30.0;
      par0[11]  = par0[8]-1.;
      

      par0[12]  = zch32;
      par0[13]  = 30.0;
      par0[14]  = par0[11];
*/
      par0[ 3]  = zch32;
      par0[ 4]  = 30.;
      par0[ 5]  = 30.+(zch32-zConeE)*TMath::Tan(thetaOpenPbO);

//    4th station
      par0[ 6]  = zch41;
      par0[ 7]  = 30.;
      par0[ 8]  = 30.+(zch41-zConeE)*TMath::Tan(thetaOpenPbO);

      par0[ 9]   = zch41;
      par0[10]  = 30.;
      par0[11]  = 37.5;  
                                          // recess erice2000
      par0[12]  = zch42;
      par0[13]  = 30.;
      par0[14]  = par0[11];

      par0[15]  = zch42;
      par0[16]  = 30.;
      par0[17]  = 30.+(zch42-zConeE)*TMath::Tan(thetaOpenPbO);

//    5th station
      par0[18]  = zch51;
      par0[19]  = 30.;
      par0[20]  = 30.+(zch51-zConeE)*TMath::Tan(thetaOpenPbO);

      par0[21]  = zch51;
      par0[22]  = 30.;
      par0[23]  = 37.5;                                            // recess erice2000

      par0[24]  = zch52;
      par0[25]  = 30.;
      par0[26]  = par0[23];

      par0[27]  = zch52;
      par0[28]  = 30.;
      par0[29]  = 30.+(zch52-zConeE)*TMath::Tan(thetaOpenPbO);
// end of cone
      par0[30]  = zFilterIn;
      par0[31]  = 30.;
      par0[32]  = par0[29];
//
      gMC->Gsvolu("YOPB", "PCON", idtmed[kPb], par0, 33);
      dz=0.;
      gMC->Gspos("YOPB", 1, "ALIC", 0., 0., dz, 0, "ONLY");
  }
}

void AliSHILvF::Init()
{
  //
  // Initialise the muon shield after it has been built
  //
  Int_t i;
  //
  if(fDebug) {
    printf("\n%s: ",ClassName());
    for(i=0;i<35;i++) printf("*");
    printf(" SHILvF_INIT ");
    for(i=0;i<35;i++) printf("*");
    printf("\n%s: ",ClassName());
    //
    // Here the SHIL initialisation code (if any!)
    for(i=0;i<80;i++) printf("*");
    printf("\n");
  }
}