{
  TGeoVolume *silvio = gGeoManager->MakeBox("Silvio",medium[18], 500., 500., 500.);  
  float sila_dim[3] = { 0.7, 2.5, 0.1 };
  float silb_dim[3] = { 4.0, 6.0, 0.1 };
  float sil_rot1[9] = {0., 0., 0., 0., 0., 0., 0., 90., 90.} ;
  float sil_rot2[9] = {0., 0., 0., 0., 0., 0., 0., 0., 0.} ;
  float sil_rot3[9] = {0., 0., 0., 0., 0., 0., 0., 0., 0.} ;
  float sil_pos1[9] = {0., -4., 0., 4.,-4., 0., 4., -5., 5.};
  float sil_pos2[9] = {0., 5., 5., 5., -5., -5., -5., 0., 0.} ;
  float sil_pos3[9] = {4., 15.4, 15.7, 16.0, 16.0, 15.7., 15.4., 14.9, 14.9.} ;
  int silvioa_medium = 10; 
  int silviob_medium = 10;
  int sbox_medium = 35;
  int sboxc_medium = 15;
  int sew_medium = 26;
  int fpcb_medium = 35;
  int pvcf_medium = 35;
  float sbox_layer_thickness = 0.19 ;
  float sbox_inner_radius = 13.5;
  float sbox_total_length = 13.5; 
  float sbox_front_frame_length = 0.5;
  float sbox_back_frame_length = 0.5;
  float sbox_front_frame_thickness = 1.4;
  float sbox_back_frame_thickness = 1.4;
  float sbox_copper_layer_thickness = 0.01 ;
  float pvc_pvcf_thickness = 0.2 ; 
  float pvc_pvcf_frame_thickness = 1. ; 
  float sbox_front_edge[3] = { sil_pos1[0] , sil_pos2[0] , sil_pos3[0]-pvc_pvcf_thickness-0.25 }   ;
  float pcb_back_pos[3] = { 0. , 0. , 12.8 } ;
  float pcb_back_dim[3] = { 6. , 10.0 , 0.164 } ; 
  float sil_sew_thickness = 0.1 ;
  float sil_fpcb_thickness = 0.1 ;
  float sil_fpcb_hole = 2.5 ;
  float sil_boxparameters[20] = { 0.    , 360. , 
				  sbox_total_length , sbox_inner_radius , sbox_inner_radius + sbox_front_frame_thickness ,
				  sbox_total_length - sbox_back_frame_length , sbox_inner_radius , sbox_inner_radius + sbox_front_frame_thickness ,
				  sbox_total_length - sbox_back_frame_length -0.00001 , sbox_inner_radius , sbox_inner_radius+sbox_layer_thickness ,
				  sbox_front_frame_length + 0.000001 , sbox_inner_radius , sbox_inner_radius+sbox_layer_thickness , 
				  sbox_front_frame_length   , sbox_inner_radius , sbox_inner_radius + sbox_back_frame_thickness ,
				  0., sbox_inner_radius , sbox_inner_radius + sbox_back_frame_thickness } ;
  float sbox_pos[3] = { sbox_front_edge[0] , sbox_front_edge[1], sbox_front_edge[2] };


  TGeoVolume *SIA = gGeoManager -> MakeTube("SIA",medium[silvioa_medium-1],sila_dim[0],sila_dim[1],sila_dim[2]/2);
  TGeoVolume *SIB = gGeoManager -> MakeBox("SIB",medium[silviob_medium-1],silb_dim[0]/2,silb_dim[1]/2,silb_dim[2]/2);     
  for(int i=0;i<9;i++)
    {
      if(i==0)
	{
	  silvio->AddNode(SIA,i,new TGeoCombiTrans(sil_pos1[i],sil_pos2[i],sil_pos3[i],new TGeoRotation("rot1",sil_rot1[i],sil_rot2[i],sil_rot3[i])));			 
	}
      else
	{
	  silvio->AddNode(SIB,i,new TGeoCombiTrans(sil_pos1[i],sil_pos2[i],sil_pos3[i],new TGeoRotation("rot1",sil_rot1[i],sil_rot2[i],sil_rot3[i])));
	}
    }  
  TGeoPcon *pgonsbox = new TGeoPgon(sil_boxparameters[0] , sil_boxparameters[1] , 8 ,6 );
  pgonsbox->DefineSection( 0 , sil_boxparameters[2] , sil_boxparameters[3] , sil_boxparameters[4] );
  pgonsbox->DefineSection( 1 , sil_boxparameters[5] , sil_boxparameters[6] , sil_boxparameters[7] );
  pgonsbox->DefineSection( 2 , sil_boxparameters[8] , sil_boxparameters[9] , sil_boxparameters[10] );
  pgonsbox->DefineSection( 3 , sil_boxparameters[11] , sil_boxparameters[12] , sil_boxparameters[13] );
  pgonsbox->DefineSection( 4 , sil_boxparameters[14] , sil_boxparameters[15] , sil_boxparameters[16] );
  pgonsbox->DefineSection( 5 , sil_boxparameters[17] , sil_boxparameters[18] , sil_boxparameters[19] );
  TGeoVolume *sbox = new TGeoVolume("SBOX", pgonsbox, medium[sbox_medium-1]);

  TGeoPcon *pgonsboxc = new TGeoPgon(sil_boxparameters[0] , sil_boxparameters[1] , 8 ,7 );
  pgonsboxc->DefineSection( 0 , sil_boxparameters[2]+sbox_copper_layer_thickness , sil_boxparameters[3] , sil_boxparameters[4] );
  pgonsboxc->DefineSection( 1 , sil_boxparameters[2] , sil_boxparameters[4] , sil_boxparameters[4]+sbox_copper_layer_thickness );
  pgonsboxc->DefineSection( 2 , sil_boxparameters[5]-sbox_copper_layer_thickness , sil_boxparameters[6] , sil_boxparameters[7]+sbox_copper_layer_thickness );
  pgonsboxc->DefineSection( 3 , sil_boxparameters[8]-sbox_copper_layer_thickness , sil_boxparameters[10] , sil_boxparameters[10]+sbox_copper_layer_thickness );
  pgonsboxc->DefineSection( 4 , sil_boxparameters[11]+sbox_copper_layer_thickness  , sil_boxparameters[13] , sil_boxparameters[13]+sbox_copper_layer_thickness );
  pgonsboxc->DefineSection( 5 , sil_boxparameters[14]+sbox_copper_layer_thickness  , sil_boxparameters[16] , sil_boxparameters[16]+sbox_copper_layer_thickness );
  pgonsboxc->DefineSection( 6 , sil_boxparameters[17] , sil_boxparameters[19] , sil_boxparameters[19]+sbox_copper_layer_thickness );
  TGeoVolume *sboxc = new TGeoVolume("SBOXc", pgonsboxc, medium[sboxc_medium-1]);

  // Aluminum Exit Window

  TGeoPcon *pgonsew = new TGeoPgon(sil_boxparameters[0] , sil_boxparameters[1] , 8 ,2 );
  pgonsew->DefineSection( 0 , sil_boxparameters[2] , 0. , sil_boxparameters[4] );
  pgonsew->DefineSection( 1 , sil_boxparameters[2]+sil_sew_thickness , 0. , sil_boxparameters[4] );
  TGeoVolume *sew = new TGeoVolume("SEW", pgonsew, medium[sew_medium-1]);

  // Aluminum front Window

  TGeoPcon *pgonsfw = new TGeoPgon(sil_boxparameters[0] , sil_boxparameters[1] , 8 ,2 );
  pgonsfw->DefineSection( 0 , sil_boxparameters[17]-sil_fpcb_thickness , 0. ,sil_fpcb_hole );
  pgonsfw->DefineSection( 1 , sil_boxparameters[17]-sil_fpcb_thickness-sil_sew_thickness , 0. , sil_fpcb_hole );
  TGeoVolume *sfw = new TGeoVolume("SFW", pgonsfw, medium[sew_medium-1]);
  
  // PVC Front Frame

  TGeoPcon *pgonpvcf = new TGeoPgon(sil_boxparameters[0] , sil_boxparameters[1] , 8 ,2 );
  pgonpvcf->DefineSection( 0 , sil_boxparameters[17]-sil_fpcb_thickness , sil_fpcb_hole-pvc_pvcf_frame_thickness/2  ,sil_fpcb_hole+pvc_pvcf_frame_thickness/2 );
  pgonpvcf->DefineSection( 1 , sil_boxparameters[17]-sil_fpcb_thickness-pvc_pvcf_frame_thickness , sil_fpcb_hole-pvc_pvcf_frame_thickness/2  ,sil_fpcb_hole+pvc_pvcf_frame_thickness/2 );
  TGeoVolume *spvcf = new TGeoVolume("SPVCF", pgonpvcf, medium[pvcf_medium-1]);

  // Aluminum Front Frame 
 
  // Front PCB

  TGeoPcon *pgonfpcb = new TGeoPgon(sil_boxparameters[0] , sil_boxparameters[1] , 8 ,2 );
  pgonfpcb->DefineSection( 0 , sil_boxparameters[17] , sil_fpcb_hole , sil_boxparameters[19] );
  pgonfpcb->DefineSection( 1 , sil_boxparameters[17]-sil_fpcb_thickness , sil_fpcb_hole , sil_boxparameters[19] );
  TGeoVolume *fpcb = new TGeoVolume("Fpcb", pgonfpcb, medium[fpcb_medium-1]);


  // Back PVB 
  TGeoPcon *pgonbpcb = new TGeoPgon(sil_boxparameters[0] , sil_boxparameters[1] , 8 ,2 );
  cout<<pcb_back_pos[2]<<endl;
  pgonbpcb->DefineSection( 0 , pcb_back_pos[2] , pcb_back_dim[0]  ,  pcb_back_dim[1] );
  pgonbpcb->DefineSection( 1 , pcb_back_pos[2]+pcb_back_dim[2] , pcb_back_dim[0]  ,  pcb_back_dim[1] );
  TGeoVolume *bpcb = new TGeoVolume("Bpcb", pgonbpcb, medium[fpcb_medium-1]);


  silvio->AddNode(sew,1.,new TGeoCombiTrans( sbox_pos[0] , sbox_pos[1] , sbox_pos[2] ,new TGeoRotation("rot1", 0. , 0. , 45./2. ))); 
  silvio->AddNode(sfw,1.,new TGeoCombiTrans( sbox_pos[0] , sbox_pos[1] , sbox_pos[2] ,new TGeoRotation("rot1", 0. , 0. , 45./2. ))); 
  silvio->AddNode(fpcb,1.,new TGeoCombiTrans(sbox_pos[0] , sbox_pos[1] , sbox_pos[2] ,new TGeoRotation("rot1", 0. , 0. , 45./2. )));
  silvio->AddNode(bpcb,1.,new TGeoCombiTrans(sbox_pos[0] , sbox_pos[1] , sbox_pos[2] ,new TGeoRotation("rot1", 0. , 0. , 45./2. ))); 
  silvio->AddNode(spvcf,1.,new TGeoCombiTrans(sbox_pos[0] , sbox_pos[1] , sbox_pos[2] ,new TGeoRotation("rot1", 0. , 0. , 45./2. )));
  silvio->AddNode(sbox,1.,new TGeoCombiTrans(sbox_pos[0] , sbox_pos[1] , sbox_pos[2] ,new TGeoRotation("rot1", 0. , 0. , 45./2. )));
  silvio->AddNode(sboxc,1.,new TGeoCombiTrans(sbox_pos[0] , sbox_pos[1] , sbox_pos[2] ,new TGeoRotation("rot1", 0. , 0. , 45./2. )));


}