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  * provided "as is" without express or implied warranty.                  *
  **************************************************************************/
 
-/*
-$Log$
-Revision 1.14  2001/10/26 08:36:19  morsch
-Geometry update.
-
-Revision 1.13  2001/04/23 23:12:41  morsch
-Overlap in closing cone corrected (thanks to Ivana Hrivnacova)
-
-Revision 1.12  2001/03/16 16:26:05  morsch
-Put vacuum in beam-pipe not air.
-
-Revision 1.11  2000/10/27 15:21:24  morsch
-Shield composition after muon project leader meeting: 24/10/2000
-- 1 cm recess in steel for station 3
-- no heavy shielding between chambers for stations 1 and 2
-
-Revision 1.10  2000/10/02 21:28:15  fca
-Removal of useless dependecies via forward declarations
-
-Revision 1.9  2000/09/12 17:00:45  morsch
-Overlaps in YMO3 and YMO4 (side-effect from last update only) corrected.
-
-Revision 1.8  2000/09/12 16:11:43  morsch
-- Bug in volume YGO2 corrected: PCON started with twice the same z-value.
-- Recesses for chambers added to outer Pb cone.
-
-Revision 1.7  2000/06/15 09:40:31  morsch
-Obsolete typedef keyword removed
-
-Revision 1.6  2000/06/13 15:01:38  morsch
-Make kind of heavy shielding material (Pb, NiCuW) dependent on presence of outer cone.
-
-Revision 1.5  2000/06/12 19:40:00  morsch
-New structure of beam pipe and heating jacket.
-Optional outer Pb cone added. Not yet compatible with chamber inner radii.
-
-Revision 1.4  2000/04/03 08:13:40  fca
-Introduce extra scope for non ANSI compliant C++ compilers
-
-Revision 1.3  2000/01/17 10:29:30  morsch
-Overlap between Shield and Absorber due to limited numerical precision removed
-by displacing the Shield by epsilon = 0.01 cm.
-
-Revision 1.2  2000/01/13 11:27:51  morsch
-Overlaps corrected: YCS3, YCS4; Inner radius YS21 corrected
-
-Revision 1.1  2000/01/12 15:44:03  morsch
-Standard version of SHIL
-
-*/
+/* $Id$ */
 
 ///////////////////////////////////////////////////////////////////////////////
 //                                                                           //
@@ -78,10 +29,11 @@ Standard version of SHIL
 //                                                                           //
 ///////////////////////////////////////////////////////////////////////////////
 
-#include "AliSHILv0.h"
-#include "AliRun.h"
-#include "AliMC.h"
+#include <TVirtualMC.h>
+
 #include "AliConst.h"
+#include "AliRun.h"
+#include "AliSHILv0.h"
 
 ClassImp(AliSHILv0)
  
@@ -126,8 +78,8 @@ void AliSHILv0::CreateGeometry()
   */
   //End_Html
 
-    Float_t cpar[5], cpar0[5], tpar[3], par1[39], pars1[100], par2[27], par3[27], 
-       par4[21], par0[45];
+    Float_t cpar[5], cpar0[5], tpar[3], par1[39], pars1[100], par2[36], par3[27], 
+       par4[24], par0[87];
     Float_t dz, dZ;
   
     Int_t *idtmed = fIdtmed->GetArray()-1699;
@@ -145,137 +97,140 @@ enum {kC=1705, kAl=1708, kFe=1709, kCu=1710, kW=1711, kPb=1712,
 //
 // Mother volume
 //
-  Float_t dRear1=dRear;
+  Float_t dRear1=kDRear;
   
-  Float_t zstart=zRear-dRear1;
+  Float_t zstart=kZRear-dRear1;
   
   par0[0]  = 0.;
   par0[1]  = 360.;
   par0[2]  = 28.;
 
-  Float_t dl=(zvac12-zstart)/2.;
+  Float_t dl=(kZvac12-zstart)/2.;
   dz=zstart+dl;
 //
 // start
   par0[3]  = -dl;
   par0[4]  = 0.;
-  par0[5]  = zstart * TMath::Tan(accMin);
+  par0[5]  = zstart * TMath::Tan(kAccMin);
 // recess station 1
-  par0[6]  = -dz+zch11;
+  par0[6]  = -dz+kZch11;
   par0[7]  = 0.;
-  par0[8]  = zch11 * TMath::Tan(accMin);
+  par0[8]  = kZch11 * TMath::Tan(kAccMin);
 
   par0[9]   = par0[6];
   par0[10]  = 0.;
   par0[11]  = 17.9;
 
-  par0[12]  = -dz+zch12;
+  par0[12]  = -dz+kZch12;
   par0[13]  = 0.;
   par0[14]  = 17.9;
 
   par0[15]  = par0[12];
   par0[16]  = 0.;
-  par0[17]  = zch12 * TMath::Tan(accMin);
+  par0[17]  = kZch12 * TMath::Tan(kAccMin);
 // recess station 2
-  par0[18]  = -dz+zch21;
+  par0[18]  = -dz+kZch21;
   par0[19]  = 0.;
-  par0[20]  = zch21 * TMath::Tan(accMin);
+  par0[20]  = kZch21 * TMath::Tan(kAccMin);
 
-  par0[21]  = -dz+zch21;
+  par0[21]  = -dz+kZch21;
   par0[22] = 0.;
   par0[23] = 23.;
 
-  par0[24]  = -dz+zch22;
+  par0[24]  = -dz+kZch22;
   par0[25] = 0.;
   par0[26] = 23.;
 
-  par0[27]  = -dz+zch22;
+  par0[27]  = -dz+kZch22;
   par0[28]  = 0.;
-  par0[29]  = zch22 * TMath::Tan(accMin);
+  par0[29]  = kZch22 * TMath::Tan(kAccMin);
 //
-  par0[30] = -dz+zvac6;
+  par0[30] = -dz+kZvac6;
   par0[31] = 0.;
-  par0[32] = zvac6 * TMath::Tan(accMin);
+  par0[32] = kZvac6 * TMath::Tan(kAccMin);
 // end of 2 deg cone
-  par0[33] = -dz+zConeE;
+  par0[33] = -dz+kZConeE;
   par0[34] = 0.;
   par0[35] = 30.;
 
-  par0[36] = -dz+zch31;
+  par0[36] = -dz+kZch31;
   par0[37] = 0.;
   par0[38] = 30.;
 
-  par0[39] = -dz+zch31;
+  par0[39] = -dz+kZch31;
   par0[40] = 0.;
   par0[41] = 29.;
 
-  par0[42] = -dz+zch32;
+  par0[42] = -dz+kZch32;
   par0[43] = 0.;
   par0[44] = 29.;
 // start of 1.6 deg cone
-  par0[45] = -dz+zch32;
+  par0[45] = -dz+kZch32;
   par0[46] = 0.;
-  par0[47] = 30.+(zch32-zConeE)*TMath::Tan(thetaOpenPbO);
+  par0[47] = 30.+(kZch32-kZConeE)*TMath::Tan(kThetaOpenPbO);
 // recess station 4
-  par0[48] = -dz+zch41;
+  par0[48] = -dz+kZch41;
   par0[49] = 0.;
-  par0[50] = 30.+(zch41-zConeE)*TMath::Tan(thetaOpenPbO);
+  par0[50] = 30.+(kZch41-kZConeE)*TMath::Tan(kThetaOpenPbO);
 
-  par0[51] = -dz+zch41;
+  par0[51] = -dz+kZch41;
   par0[52] = 0.;
   par0[53] = 37.5;
 
-  par0[54] = -dz+zch42;
+  par0[54] = -dz+kZch42;
   par0[55] = 0.;
   par0[56] = 37.5;
 
-  par0[57] = -dz+zch42;
+  par0[57] = -dz+kZch42;
   par0[58] = 0.;
-  par0[59] = 30.+(zch42-zConeE)*TMath::Tan(thetaOpenPbO);
+  par0[59] = 30.+(kZch42-kZConeE)*TMath::Tan(kThetaOpenPbO);
 
 // recess station 5
 
-  par0[60] = -dz+zch51;
+  par0[60] = -dz+kZch51;
   par0[61] = 0.;
-  par0[62] = 30.+(zch51-zConeE)*TMath::Tan(thetaOpenPbO);
+  par0[62] = 30.+(kZch51-kZConeE)*TMath::Tan(kThetaOpenPbO);
 
-  par0[63] = -dz+zch51;
+  par0[63] = -dz+kZch51;
   par0[64] = 0.;
   par0[65] = 37.5;
 
-  par0[66] = -dz+zch52;
+  par0[66] = -dz+kZch52;
   par0[67] = 0.;
   par0[68] = 37.5;
 
-  par0[69] = -dz+zch52;
+  par0[69] = -dz+kZch52;
   par0[70] = 0.;
-  par0[71] = 30.+(zch52-zConeE)*TMath::Tan(thetaOpenPbO);
+  par0[71] = 30.+(kZch52-kZConeE)*TMath::Tan(kThetaOpenPbO);
 
 // end of cone
 
-  par0[72] = -dz+zvac10;
+  par0[72] = -dz+kZvac10;
   par0[73] = 0.;
-  par0[74] = 30.+(zvac10-zConeE)*TMath::Tan(thetaOpenPbO);
+  par0[74] = 30.+(kZvac10-kZConeE)*TMath::Tan(kThetaOpenPbO);
 
-  par0[75] = -dz+zvac10;
+  par0[75] = -dz+kZvac10;
   par0[76] = 0.;
-  par0[77] = R42;
+  par0[77] = kR42;
 
-  par0[78] = -dz+zvac11;
+  par0[78] = -dz+kZvac11;
   par0[79] = 0.;
-  par0[80] = R42;
+  par0[80] = kR42;
 
-  par0[81] = -dz+zvac11;
+  par0[81] = -dz+kZvac11;
   par0[82] = 0.;
-  par0[83] = R43;
+  par0[83] = kR43;
 
-  par0[84] = -dz+zvac12;
+  par0[84] = -dz+kZvac12;
   par0[85] = 0.;
-  par0[86] = R43;
+  par0[86] = kR43;
 
   gMC->Gsvolu("YMOT", "PCON", idtmed[kVacuum], par0, 87);
   dz=zstart+dl;
   gMC->Gspos("YMOT", 1, "ALIC", 0., 0., dz, 0, "ONLY");  
+  gMC->Gsbool("YMOT","L3DO");
+  gMC->Gsbool("YMOT","L3O1");
+  gMC->Gsbool("YMOT","L3O2");
 //
 
   dZ=-dl;
@@ -287,59 +242,58 @@ enum {kC=1705, kAl=1708, kFe=1709, kCu=1710, kW=1711, kPb=1712,
   par1[0]  = 0.;
   par1[1]  = 360.;
   par1[2]  = 12.;
-  dl=(zvac4-zstart)/2.;
+  dl=(kZvac4-zstart)/2.;
   
   par1[3]  = -dl;
-  par1[4]  = rAbs+(zstart-zOpen) * TMath::Tan(thetaOpen1);
-  par1[5]  = zstart * TMath::Tan(accMin);
+  par1[4]  = kRAbs+(zstart-kZOpen) * TMath::Tan(kThetaOpen1);
+  par1[5]  = zstart * TMath::Tan(kAccMin);
 
-  par1[6]  = -dl+zvac1-zstart;
-  par1[7]  = rAbs+ (zvac1-zOpen) * TMath::Tan(thetaOpen1);
-  par1[8]  = zvac1 * TMath::Tan(accMin);
+  par1[6]  = -dl+kZvac1-zstart;
+  par1[7]  = kRAbs+ (kZvac1-kZOpen) * TMath::Tan(kThetaOpen1);
+  par1[8]  = kZvac1 * TMath::Tan(kAccMin);
 
-  par1[9]  = par1[6]+dr11/2.;
-  par1[10] = par1[7]+dr11;
-  par1[11] = (zvac1+dr11/2.) * TMath::Tan(accMin);
+  par1[9]  = par1[6]+kDr11/2.;
+  par1[10] = par1[7]+kDr11;
+  par1[11] = (kZvac1+kDr11/2.) * TMath::Tan(kAccMin);
 
   par1[12] = -dl+dRear1;
   par1[13] = par1[10];
-  par1[14] = zRear * TMath::Tan(accMin);
+  par1[14] = kZRear * TMath::Tan(kAccMin);
 
   par1[15] = -dl+dRear1;
   par1[16] = par1[10];
-  par1[17] = R11;
+  par1[17] = kR11;
 
-  par1[18] = -dl+(zvac1+dr11+dB1-zstart);
+  par1[18] = -dl+(kZvac1+kDr11+kDB1-zstart);
   par1[19] = par1[16];
-  par1[20] = R11;
+  par1[20] = kR11;
 
-  par1[21] = par1[18]+dr12;
-  par1[22] = par1[19]+dr12;
-  par1[23] = R11;
+  par1[21] = par1[18]+kDr12;
+  par1[22] = par1[19]+kDr12;
+  par1[23] = kR11;
 
-  par1[24] = par1[21]+dF1;
+  par1[24] = par1[21]+kDF1;
   par1[25] = par1[22];
-  par1[26] = R11;
+  par1[26] = kR11;
 
-  par1[27] = par1[24]+dr12;
-  par1[28] = par1[25]-dr12; 
-  par1[29] = R11;
+  par1[27] = par1[24]+kDr12;
+  par1[28] = par1[25]-kDr12; 
+  par1[29] = kR11;
 
-  par1[30] = par1[27]+dB1;
+  par1[30] = par1[27]+kDB1;
   par1[31] = par1[28];
-  par1[32] = R11;
+  par1[32] = kR11;
 
-  par1[33] = par1[30]+dr13;
-  par1[34] = par1[31]-dr13;
-  par1[35] = R11;
+  par1[33] = par1[30]+kDr13;
+  par1[34] = par1[31]-kDr13;
+  par1[35] = kR11;
 
-  par1[36] = -dl+zvac4-zstart;
+  par1[36] = -dl+kZvac4-zstart;
   par1[37] = par1[34];
-  par1[38] = R11;
+  par1[38] = kR11;
 
   Float_t r2  = par1[37];
   Float_t rBox= par1[31]-0.1;
-  Float_t rc1 = par1[7];
 
   gMC->Gsvolu("YGO1", "PCON", idtmed[kNiCuW], par1, 39);
   Int_t i;
@@ -355,9 +309,9 @@ enum {kC=1705, kAl=1708, kFe=1709, kCu=1710, kW=1711, kPb=1712,
 
 //
 // Steel envelope
-  tpar[0]=R11-dRSteel2;
-  tpar[1]=R11;
-  tpar[2]=(zvac4-zvac3)/2.;
+  tpar[0]=kR11-kDRSteel2;
+  tpar[1]=kR11;
+  tpar[2]=(kZvac4-kZvac3)/2.;
   gMC->Gsvolu("YSE1", "TUBE", idtmed[kNiCuW], tpar, 3);
   dz=dl-tpar[2];
   gMC->Gspos("YSE1", 1, "YGO1", 0., 0., dz, 0, "ONLY");
@@ -368,31 +322,35 @@ enum {kC=1705, kAl=1708, kFe=1709, kCu=1710, kW=1711, kPb=1712,
 //
 // Bellow 1
 //
-  tpar[0]=rB1;
-  tpar[1]=rB1+hB1;
-  tpar[2]=eB1/2.;
+
+//
+// Bellow 1
+//
+  tpar[0]=kRB1;
+  tpar[1]=kRB1+kHB1;
+  tpar[2]=kEB1/2.;
   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.;
+  tpar[0]=kRB1+kHB1-kEB1;
+  tpar[1]=kRB1+kHB1;
+  tpar[2]=(kLB1/2.-2.*kEB1)/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.;
+  tpar[0]=kRB1-kEB1;
+  tpar[1]=kRB1;
+  tpar[2]=kLB1/8.;
   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.;
+  tpar[1]=kRB1+kHB1;
+  tpar[2]=-kLB1/2.;
   gMC->Gsvolu("YBU1", "TUBE", idtmed[kVacuum+40], tpar, 3);
 
-  dz=-tpar[2]+dl3;
+  dz=-kLB1/2.+dl3;
   gMC->Gspos("YB13", 1, "YBU1", 0., 0., dz, 0, "ONLY"); 
   dz+=dl3;
   dz+=dl1;  
@@ -409,71 +367,66 @@ enum {kC=1705, kAl=1708, kFe=1709, kCu=1710, kW=1711, kPb=1712,
   
 
   tpar[0]=0;
-  tpar[1]=rB1+hB1+0.5;
-  tpar[2]=10.*lB1/2.;
+  tpar[1]=kRB1+kHB1+0.5;
+  tpar[2]=12.*kLB1/2.;
   gMC->Gsvolu("YBM1", "TUBE", idtmed[kVacuum+40], tpar, 3);
+  gMC->Gsdvn("YB1S", "YBM1", 12 , 3);
+
   Float_t bsize = tpar[2];
-  tpar[0]=rB1+hB1;
+  tpar[0]=kRB1+kHB1;
+  tpar[2]=-kLB1/2.;
   gMC->Gsvolu("YBI1", "TUBE", idtmed[kInsulation+40], tpar, 3);
-  gMC->Gspos("YBI1", 2, "YBM1", 0., 0., 0., 0, "ONLY"); 
 
-  dz=-bsize+lB1/2.;
-
-  for (i=0; i<10; i++) {
-    gMC->Gspos("YBU1", i+1 , "YBM1", 0., 0., dz, 0, "ONLY"); 
-    dz+=lB1;
-  }
+  gMC->Gspos("YBI1", 1, "YB1S", 0., 0., 0., 0, "ONLY"); 
+  gMC->Gspos("YBU1", 1, "YB1S", 0., 0., 0., 0, "ONLY"); 
 
-  dz=-dl+(zvac1-zstart)+dr11+bsize;
+  dz=-dl+(kZvac1-zstart)+kDr11/2.+bsize;
   gMC->Gspos("YBM1", 1, "YMO1", 0., 0., dz, 0, "ONLY"); 
 
-  dz=dl-dr13-(zvac4-zvac3)-bsize;
-  gMC->Gspos("YBM1", 2, "YMO1", 0., 0., dz, 0, "ONLY"); 
-
-
 //
 // Flange
 
   tpar[0]=0;
-  tpar[1]=rF1+0.6;
-  tpar[2]=dF1/2.;
+  tpar[1]=kRF1+0.6;
+  tpar[2]=kDF1/2.;
   gMC->Gsvolu("YFM1", "TUBE", idtmed[kVacuum+40], tpar, 3);
 // Steel
-  tpar[0]=rB1;
-  tpar[1]=rF1+0.6;
-  tpar[2]=dF1/2.;
+  tpar[0]=kRB1;
+  tpar[1]=kRF1+0.6;
+  tpar[2]=kDF1/2.;
   gMC->Gsvolu("YF11", "TUBE", idtmed[kSteel+40], tpar, 3);
 // Insulation
-  tpar[0]=rF1;
-  tpar[1]=rF1+0.5;
-  tpar[2]=dF1/2.;
+  tpar[0]=kRF1;
+  tpar[1]=kRF1+0.5;
+  tpar[2]=kDF1/2.;
   gMC->Gsvolu("YF12", "TUBE", idtmed[kInsulation+40], tpar, 3);
 
 
   gMC->Gspos("YF11", 1, "YFM1", 0., 0., 0., 0, "ONLY"); 
   gMC->Gspos("YF12", 1, "YFM1", 0., 0., 0., 0, "ONLY"); 
 
-  dz=-dl+(zvac2-zstart);
+  dz=-dl+(kZvac1-zstart)+kDr11/2.+2.*bsize+kDF1/2.+3.;
   gMC->Gspos("YFM1", 2, "YMO1", 0., 0., dz, 0, "ONLY"); 
 
 //
 // pipe between flange and bellows
 //
 // Steel 
-  tpar[0]=rB1-dTubeS;
-  tpar[1]=rB1+0.6;
-  tpar[2]=2.*(dB1+dr12-10.*lB1)/4.;
+  tpar[0]=kRB1-dTubeS;
+  tpar[1]=kRB1+0.6;
+  tpar[2]=1.5;
   gMC->Gsvolu("YPF1", "TUBE", idtmed[kSteel+40], tpar, 3);
 // Insulation
-  tpar[0]=rB1;
-  tpar[1]=rB1+0.5;
+  tpar[0]=kRB1;
+  tpar[1]=kRB1+0.5;
   gMC->Gsvolu("YPS1", "TUBE", idtmed[kInsulation+40], tpar, 3);
   gMC->Gspos("YPS1", 1, "YPF1", 0., 0., 0., 0, "ONLY"); 
 
-  dz=-dl+(zvac2-zstart)-dF1/2.-tpar[2];
+  dz=dz-1.5-kDF1/2.;
   gMC->Gspos("YPF1", 1, "YMO1", 0., 0., dz, 0, "ONLY"); 
-  dz=-dl+(zvac2-zstart)+dF1/2.+tpar[2];
+  dz=dz+3.0+kDF1;
   gMC->Gspos("YPF1", 2, "YMO1", 0., 0., dz, 0, "ONLY"); 
+//
 
 // Pipe+Heating     1.5 mm 
 // Heating Jacket   5.0 mm
@@ -483,11 +436,11 @@ enum {kC=1705, kAl=1708, kFe=1709, kCu=1710, kW=1711, kPb=1712,
 // pipe and heating jackets outside bellows
 //
 // left side
-  cpar0[0]=(zvac1+dr11-zstart)/2;
-  cpar0[1]=rVacu-0.05  +(zstart-zOpen)*TMath::Tan(thetaOpen1);
-  cpar0[2]=rVacu+0.7   +(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);
+  cpar0[0]=(kZvac1+kDr11/2.-zstart)/2;
+  cpar0[1]=kRVacu-0.05  +(zstart-kZOpen)*TMath::Tan(kThetaOpen1);
+  cpar0[2]=kRVacu+0.7   +(zstart-kZOpen)*TMath::Tan(kThetaOpen1);
+  cpar0[3]=cpar0[1]+2.*cpar0[0]*TMath::Tan(kThetaOpen1);
+  cpar0[4]=cpar0[2]+2.*cpar0[0]*TMath::Tan(kThetaOpen1);
   gMC->Gsvolu("YV11", "CONE", idtmed[kSteel+40], cpar0, 5);
 //
 // insulation
@@ -506,25 +459,26 @@ enum {kC=1705, kAl=1708, kFe=1709, kCu=1710, kW=1711, kPb=1712,
   dTubeS  = 0.35;
   dVacuS += 0.25;
   
-  cpar0[0] = (zvac4-zvac3)/2;
-  cpar0[1] = rB1;
+  cpar0[0] = (kZvac4-kZvac3)/2;
+  cpar0[1] = kRB1;
   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);
+  cpar0[3] = cpar0[1]+2.*cpar0[0]*TMath::Tan(kThetaOpenB);
+  cpar0[4] = cpar0[2]+2.*cpar0[0]*TMath::Tan(kThetaOpenB);
   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[2] = cpar0[1]+dTubeS+kDInsuS;
   cpar[3] = cpar0[3]+dTubeS;
-  cpar[4] = cpar0[3]+dTubeS+dInsuS;
+  cpar[4] = cpar0[3]+dTubeS+kDInsuS;
   gMC->Gsvolu("YI12", "CONE", idtmed[kInsulation], cpar, 5);
   gMC->Gspos("YI12", 1, "YV12", 0., 0., 0., 0, "ONLY"); 
 
   dz=dl-cpar0[0];
   gMC->Gspos("YV12", 1, "YMO1", 0., 0., dz, 0, "ONLY"); 
+
 //
 // Second Section
 // Between first and second bellow section
@@ -533,52 +487,52 @@ enum {kC=1705, kAl=1708, kFe=1709, kCu=1710, kW=1711, kPb=1712,
   par2[0]  = 0.;
   par2[1]  = 360.;
   par2[2]  = 11.;
-  dl=(zvac7-zvac4)/2.;
+  dl=(kZvac7-kZvac4)/2.;
 // recess station 2
   par2[3]  = -dl;
   par2[4]  = r2;
-  par2[5]  = R21;
+  par2[5]  = kR21;
 
   par2[6]  = -dl+.1;
   par2[7]  = r2;
-  par2[8]  = R21;
+  par2[8]  = kR21;
 
-  par2[9]   = -dl+(zvac6-zvac4);
-  par2[10]  = r2+(zvac6-zvac4-10.) * TMath::Tan(thetaOpen2);
-  par2[11]  = R21;
+  par2[9]   = -dl+(kZvac6-kZvac4);
+  par2[10]  = r2+(kZvac6-kZvac4-10.) * TMath::Tan(kThetaOpen2);
+  par2[11]  = kR21;
 
-  par2[12] = -dl+(zvac6-zvac4);
+  par2[12] = -dl+(kZvac6-kZvac4);
   par2[13] = par2[10];
-  par2[14] = zvac6*TMath::Tan(accMin);
+  par2[14] = kZvac6*TMath::Tan(kAccMin);
 
 // Start of Pb section
-  par2[15] = -dl+(zPb-zvac4);
-  par2[16] = r2+(zPb-zvac4-10.) * TMath::Tan(thetaOpen2);
-  par2[17] = zPb*TMath::Tan(accMin);
+  par2[15] = -dl+(kZPb-kZvac4);
+  par2[16] = r2+(kZPb-kZvac4-10.) * TMath::Tan(kThetaOpen2);
+  par2[17] = kZPb*TMath::Tan(kAccMin);
 //
 // end of cone following 2 deg line
-  par2[18] = -dl+(zConeE-zvac4);
-  par2[19] = r2+(zConeE-zvac4-10.) * TMath::Tan(thetaOpen2);
+  par2[18] = -dl+(kZConeE-kZvac4);
+  par2[19] = r2+(kZConeE-kZvac4-10.) * TMath::Tan(kThetaOpen2);
   par2[20] = 30.;
 // recess station 3
-  par2[21] = -dl+(zch31-zvac4);
-  par2[22] = r2+(zch31-zvac4-10.) * TMath::Tan(thetaOpen2);
+  par2[21] = -dl+(kZch31-kZvac4);
+  par2[22] = r2+(kZch31-kZvac4-10.) * TMath::Tan(kThetaOpen2);
   par2[23] = 30.;
 
-  par2[24] = -dl+(zch31-zvac4);
-  par2[25] = r2+(zch31-zvac4-10.) * TMath::Tan(thetaOpen2);
+  par2[24] = -dl+(kZch31-kZvac4);
+  par2[25] = r2+(kZch31-kZvac4-10.) * TMath::Tan(kThetaOpen2);
   par2[26] = 29.;
 
-  par2[27] = -dl+(zch32-zvac4);
-  par2[28] = r2+(zch32-zvac4-10.) * TMath::Tan(thetaOpen2);
+  par2[27] = -dl+(kZch32-kZvac4);
+  par2[28] = r2+(kZch32-kZvac4-10.) * TMath::Tan(kThetaOpen2);
   par2[29] = 29.;
 
-  par2[30] = -dl+(zch32-zvac4);
-  par2[31] = r2+(zch32-zvac4-10.) * TMath::Tan(thetaOpen2);
+  par2[30] = -dl+(kZch32-kZvac4);
+  par2[31] = r2+(kZch32-kZvac4-10.) * TMath::Tan(kThetaOpen2);
   par2[32] = 30.;
 
-  par2[33] = -dl+(zvac7-zvac4);
-  par2[34] = r2+(zvac7-zvac4-10.) * TMath::Tan(thetaOpen2);
+  par2[33] = -dl+(kZvac7-kZvac4);
+  par2[34] = r2+(kZvac7-kZvac4-10.) * TMath::Tan(kThetaOpen2);
   par2[35] = 30.;
 
   gMC->Gsvolu("YGO2", "PCON", idtmed[kSteel+40], par2, 36);
@@ -590,22 +544,22 @@ enum {kC=1705, kAl=1708, kFe=1709, kCu=1710, kW=1711, kPb=1712,
   parPb[0]  = 0.;
   parPb[1]  = 360.;
   parPb[2]  = 3.;
-  Float_t dlPb=(zvac7-zPb)/2.;
+  Float_t dlPb=(kZvac7-kZPb)/2.;
   
   parPb[3]  = -dlPb;
-  parPb[4]  =  r2+(zPb-zvac4-10.) * TMath::Tan(thetaOpen2);
-  parPb[5]  =  zPb*TMath::Tan(accMin)-dRSteel2;
+  parPb[4]  =  r2+(kZPb-kZvac4-10.) * TMath::Tan(kThetaOpen2);
+  parPb[5]  =  kZPb*TMath::Tan(kAccMin)-kDRSteel2;
   
-  parPb[6]  = -dlPb+(zConeE-zPb);
-  parPb[7]  =  r2+(zConeE-zvac4-10.) * TMath::Tan(thetaOpen2);
+  parPb[6]  = -dlPb+(kZConeE-kZPb);
+  parPb[7]  =  r2+(kZConeE-kZvac4-10.) * TMath::Tan(kThetaOpen2);
   parPb[8]  = 26.;
   
   parPb[9]   = dlPb;
-  parPb[10]  =  r2+(zvac7-zvac4-10.) * TMath::Tan(thetaOpen2);
+  parPb[10]  =  r2+(kZvac7-kZvac4-10.) * TMath::Tan(kThetaOpen2);
   parPb[11]  = 26.;
 
   gMC->Gsvolu("YXO2", "PCON", idtmed[kPb], parPb, 12);   
-  gMC->Gspos("YXO2", 1, "YGO2", 0., 0., (zPb-zvac4)/2., 0, "ONLY");  
+  gMC->Gspos("YXO2", 1, "YGO2", 0., 0., (kZPb-kZvac4)/2., 0, "ONLY");  
 
 //
 // W cone 
@@ -614,26 +568,26 @@ enum {kC=1705, kAl=1708, kFe=1709, kCu=1710, kW=1711, kPb=1712,
   parW[0]  = 0.;
   parW[1]  = 360.;
   parW[2]  = 4.;
-  Float_t dlW=(zPb-zvac4)/2.;
+  Float_t dlW=(kZPb-kZvac4)/2.;
   
   parW[3]   = -dlW;
   parW[4]   =  r2;
-  parW[5]   =  R21-dRSteel2;
+  parW[5]   =  kR21-kDRSteel2;
   
-  parW[6]   = -dlW+(zvac6-zvac4)+dRSteel2;
-  parW[7]   =  r2+(zvac6-zvac4+dRSteel2) * TMath::Tan(thetaOpen2);
-  parW[8]   =  R21-dRSteel2;
+  parW[6]   = -dlW+(kZvac6-kZvac4)+kDRSteel2;
+  parW[7]   =  r2+(kZvac6-kZvac4+kDRSteel2) * TMath::Tan(kThetaOpen2);
+  parW[8]   =  kR21-kDRSteel2;
  
-  parW[9]   = -dlW+(zvac6-zvac4)+dRSteel2;
-  parW[10]  =  r2+(zvac6-zvac4+dRSteel2) * TMath::Tan(thetaOpen2);
-  parW[11]  =  (zvac6+dRSteel2)*TMath::Tan(accMin)-dRSteel2;
+  parW[9]   = -dlW+(kZvac6-kZvac4)+kDRSteel2;
+  parW[10]  =  r2+(kZvac6-kZvac4+kDRSteel2) * TMath::Tan(kThetaOpen2);
+  parW[11]  =  (kZvac6+kDRSteel2)*TMath::Tan(kAccMin)-kDRSteel2;
  
-  parW[12]   = dlW;
-  parW[13]  =  r2+(zPb-zvac4) * TMath::Tan(thetaOpen2);
-  parW[14]  = zPb*TMath::Tan(accMin)-dRSteel2;
+  parW[12]  = dlW;
+  parW[13]  =  r2+(kZPb-kZvac4) * TMath::Tan(kThetaOpen2);
+  parW[14]  = kZPb*TMath::Tan(kAccMin)-kDRSteel2;
 
   gMC->Gsvolu("YYO2", "PCON", idtmed[kNiCuW], parW, 15);         
-  gMC->Gspos("YYO2", 1, "YGO2", 0., 0., -(zvac7-zPb)/2., 0, "ONLY");  
+  gMC->Gspos("YYO2", 1, "YGO2", 0., 0., -(kZvac7-kZPb)/2., 0, "ONLY");  
 
   for (i=4; i<35; i+=3) par2[i]  = 0;
           
@@ -646,19 +600,19 @@ enum {kC=1705, kAl=1708, kFe=1709, kCu=1710, kW=1711, kPb=1712,
 //
 // 2nd section: vacuum system 
 //
-  cpar0[0]=(zvac7-zvac4)/2;
+  cpar0[0]=(kZvac7-kZvac4)/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);
+  cpar0[3]=cpar0[1]+2.*cpar0[0]*TMath::Tan(kThetaOpenB);
+  cpar0[4]=cpar0[2]+2.*cpar0[0]*TMath::Tan(kThetaOpenB);
   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[2]=cpar0[1]+dTubeS+kDInsuS;
   cpar[3]=cpar0[3]+dTubeS;
-  cpar[4]=cpar0[3]+dTubeS+dInsuS;
+  cpar[4]=cpar0[3]+dTubeS+kDInsuS;
   gMC->Gsvolu("YI21", "CONE", idtmed[kInsulation+40], cpar, 5);
   gMC->Gspos("YI21", 1, "YV21", 0., 0., 0., 0, "ONLY"); 
   gMC->Gspos("YV21", 1, "YMO2", 0., 0., 0., 0, "ONLY"); 
@@ -669,37 +623,37 @@ enum {kC=1705, kAl=1708, kFe=1709, kCu=1710, kW=1711, kPb=1712,
   par3[0]  = 0.;
   par3[1]  = 360.;
   par3[2]  = 8.;
-  dl=(zvac9-zvac7)/2.;
+  dl=(kZvac9-kZvac7)/2.;
   
   par3[3]  = -dl;
-  par3[4]  = r2+(zvac7-zvac3) * TMath::Tan(thetaOpen2);
+  par3[4]  = r2+(kZvac7-kZvac3) * TMath::Tan(kThetaOpen2);
   par3[5]  = 30.;
 
-  par3[6]  = -dl+dr21;
-  par3[7]  = par3[4]+dr21;
+  par3[6]  = -dl+kDr21;
+  par3[7]  = par3[4]+kDr21;
   par3[8]  = 30.;
 
-  par3[9]  = par3[6]+dB2;
+  par3[9]  = par3[6]+kDB2;
   par3[10] = par3[7];
   par3[11] = 30.;
 
-  par3[12] = par3[9]+dr22;
-  par3[13] = par3[10]+dr22;
+  par3[12] = par3[9]+kDr22;
+  par3[13] = par3[10]+kDr22;
   par3[14] = 30.;
 
-  par3[15] = par3[12]+dF2;
+  par3[15] = par3[12]+kDF2;
   par3[16] = par3[13];
   par3[17] = 30.;
 
-  par3[18] = par3[15]+dr22;
-  par3[19] = par3[16]-dr22;
+  par3[18] = par3[15]+kDr22;
+  par3[19] = par3[16]-kDr22;
   par3[20] = 30.;
 
-  par3[21] = par3[18]+dB2;
+  par3[21] = par3[18]+kDB2;
   par3[22] = par3[19];
   par3[23] = 30.;
 
-  par3[24] = par3[21]+dr23;
+  par3[24] = par3[21]+kDr23;
   par3[25] = par3[22];
   par3[26] = 30.;
 //
@@ -730,28 +684,28 @@ enum {kC=1705, kAl=1708, kFe=1709, kCu=1710, kW=1711, kPb=1712,
 //
 // Bellow2
 //
-  tpar[0]=rB2;
-  tpar[1]=rB2+hB2;
-  tpar[2]=eB2/2.;
+  tpar[0]=kRB2;
+  tpar[1]=kRB2+kHB2;
+  tpar[2]=kEB2/2.;
   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.;
+  tpar[0]=kRB2+kHB2-kEB2;
+  tpar[1]=kRB2+kHB2;
+  tpar[2]=(kLB2/2.-2.*kEB2)/2.;
   gMC->Gsvolu("YB22", "TUBE", idtmed[kSteel+40], tpar, 3);
   dl2=tpar[2];
 
-  tpar[0]=rB2-eB2;
-  tpar[1]=rB2;
-  tpar[2]=lB2/8.;
+  tpar[0]=kRB2-kEB2;
+  tpar[1]=kRB2;
+  tpar[2]=kLB2/8.;
   gMC->Gsvolu("YB23", "TUBE", idtmed[kSteel+40], tpar, 3);
   dl3=tpar[2];
 
 
   tpar[0]=0;
-  tpar[1]=rB2+hB2;
-  tpar[2]=lB2/2.;
+  tpar[1]=kRB2+kHB2;
+  tpar[2]=kLB2/2.;
   gMC->Gsvolu("YBU2", "TUBE", idtmed[kVacuum+40], tpar, 3);
 
   dz=-tpar[2]+dl3;
@@ -771,58 +725,58 @@ enum {kC=1705, kAl=1708, kFe=1709, kCu=1710, kW=1711, kPb=1712,
   
 
   tpar[0]=0;
-  tpar[1]=rB2+hB2;
-  tpar[2]=7.*lB2/2.;
+  tpar[1]=kRB2+kHB2;
+  tpar[2]=7.*kLB2/2.;
   gMC->Gsvolu("YBM2", "TUBE", idtmed[kVacuum+40], tpar, 3);
-  dz=-tpar[2]+lB2/2.;
+  dz=-tpar[2]+kLB2/2.;
 
   for (i=0; i<7; i++) {
     gMC->Gspos("YBU2", i+1 , "YBM2", 0., 0.,dz , 0, "ONLY"); 
-    dz+=lB2;
+    dz+=kLB2;
   }
 
-  dz=-dl+dr21+tpar[2];
+  dz=-dl+kDr21+tpar[2];
   gMC->Gspos("YBM2", 1, "YMO3", 0., 0., dz, 0, "ONLY"); 
 
-  dz=dl-dr23-tpar[2];
+  dz=dl-kDr23-tpar[2];
   gMC->Gspos("YBM2", 2, "YMO3", 0., 0., dz, 0, "ONLY"); 
 
 //
 // Flange
 
   tpar[0]=0;
-  tpar[1]=rF2;
-  tpar[2]=dF2/2.;
+  tpar[1]=kRF2;
+  tpar[2]=kDF2/2.;
   gMC->Gsvolu("YFM2", "TUBE", idtmed[kVacuum+40], tpar, 3);
 
-  tpar[0]=rF2-2.;
-  tpar[1]=rF2;
-  tpar[2]=dF2/2.;
+  tpar[0]=kRF2-2.;
+  tpar[1]=kRF2;
+  tpar[2]=kDF2/2.;
   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.;
+  tpar[0]=kRB2;
+  tpar[1]=kRF2-2.;
+  tpar[2]=kDFlange/2.;
   gMC->Gsvolu("YF22", "TUBE", idtmed[kSteel+40], tpar, 3);
-  dz=-dF2/2.+tpar[2];
+  dz=-kDF2/2.+tpar[2];
   gMC->Gspos("YF22", 1, "YFM2", 0., 0., dz, 0, "ONLY"); 
-  dz= dF2/2.-tpar[2];
+  dz= kDF2/2.-tpar[2];
   gMC->Gspos("YF22", 2, "YFM2", 0., 0., dz, 0, "ONLY"); 
 
-  dz=dr21/2.-dr23/2.;
+  dz=kDr21/2.-kDr23/2.;
   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.;
+  tpar[0]=kRB2-dTubeS;
+  tpar[1]=kRB2;
+  tpar[2]=2.*(kDB2+kDr22-7.*kLB2)/4.;
   gMC->Gsvolu("YPF2", "TUBE", idtmed[kSteel+40], tpar, 3);
-  dz=dr21/2.-dr23/2.-dF2/2.-tpar[2];
+  dz=kDr21/2.-kDr23/2.-kDF2/2.-tpar[2];
   gMC->Gspos("YPF2", 1, "YMO3", 0., 0., dz, 0, "ONLY"); 
-  dz=dr21/2.-dr23/2.+dF2/2.+tpar[2];
+  dz=kDr21/2.-kDr23/2.+kDF2/2.+tpar[2];
   gMC->Gspos("YPF2", 2, "YMO3", 0., 0., dz, 0, "ONLY"); 
 
   Float_t dHorZ=20.;
@@ -833,7 +787,7 @@ enum {kC=1705, kAl=1708, kFe=1709, kCu=1710, kW=1711, kPb=1712,
   par4[0]  = 0.;
   par4[1]  = 360.;
   par4[2]  = 7.;
-  dl=(zvac12-zvac9)/2.;
+  dl=(kZvac12-kZvac9)/2.;
   
   par4[3]  = -dl;
   par4[4]  = r3;
@@ -843,35 +797,35 @@ enum {kC=1705, kAl=1708, kFe=1709, kCu=1710, kW=1711, kPb=1712,
   par4[7]  = r3;
   par4[8]  = 30.;
 
-  par4[9]  = -dl+(zvac10-zvac9);
-  par4[10]  = r3+(zvac10-zvac9-dHorZ) * TMath::Tan(thetaOpen3);
+  par4[9]  = -dl+(kZvac10-kZvac9);
+  par4[10]  = r3+(kZvac10-kZvac9-dHorZ) * TMath::Tan(kThetaOpen3);
   par4[11]  = 30.;
 
   par4[12]  = par4[9];
   par4[13] = par4[10];
-  par4[14] = R42;
+  par4[14] = kR42;
 
-  par4[15] = -dl+(zvac11-zvac9);
-  par4[16] = r3+(zvac11-zvac9-dHorZ) * TMath::Tan(thetaOpen3);
-  par4[17] = R42;
+  par4[15] = -dl+(kZvac11-kZvac9);
+  par4[16] = r3+(kZvac11-kZvac9-dHorZ) * TMath::Tan(kThetaOpen3);
+  par4[17] = kR42;
 
   par4[18] = par4[15];
   par4[19] = par4[16];
-  par4[20] = R43;
+  par4[20] = kR43;
 
-  par4[21] = -dl+(zvac12-zvac9);
-  par4[22] = rVacu+dVacuS;
-  par4[23] = R43;
+  par4[21] = -dl+(kZvac12-kZvac9);
+  par4[22] = kRVacu+dVacuS;
+  par4[23] = kR43;
 
   gMC->Gsvolu("YGO4", "PCON", idtmed[iHeavy+40], par4, 24);
 
-  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");  
+//  parPb[0]  = (kZvac12-kZvac10)/2.;
+//  parPb[1]  = parPb[3];
+//  parPb[2]  = 31.;
+//  parPb[3]  = parPb[1]+2.*parPb[0]*TMath::Tan(kThetaOpenPb);
+//  parPb[4]  = 31.;
+//  gMC->Gsvolu("YXO5", "CONE", idtmed[kPb], parPb, 5);
+//  gMC->Gspos("YXO5", 1, "YGO4", 0., 0., -dl+(kZvac10-kZvac9)+parPb[0], 0, "ONLY");  
 
   for (i=4; i<23; i+=3) par4[i]  = 0;
 
@@ -886,10 +840,10 @@ enum {kC=1705, kAl=1708, kFe=1709, kCu=1710, kW=1711, kPb=1712,
 //
 // Closing concrete cone 
 //
-  cpar[0]=(zvac12-zvac11)/2.;
-  cpar[1] = r3+(zvac11-zvac9-dHorZ) * TMath::Tan(thetaOpen3);
+  cpar[0]=(kZvac12-kZvac11)/2.;
+  cpar[1] = r3+(kZvac11-kZvac9-dHorZ) * TMath::Tan(kThetaOpen3);
   cpar[2] = cpar[1]+0.001;
-  cpar[3] = rVacu+dVacuS;
+  cpar[3] = kRVacu+dVacuS;
   cpar[4] = cpar[2];
   gMC->Gsvolu("YCC4", "CONE", idtmed[kConcrete+40], cpar, 5);
   dz=dl-cpar[0];
@@ -900,31 +854,31 @@ enum {kC=1705, kAl=1708, kFe=1709, kCu=1710, kW=1711, kPb=1712,
   dz=-dl;
   tpar[0]=26.;
   tpar[1]=30.;
-  tpar[2]=(zvac10-zvac9)/2.;
+  tpar[2]=(kZvac10-kZvac9)/2.;
   gMC->Gsvolu("YS41", "TUBE", idtmed[kSteel], tpar, 3);
   dz+=tpar[2];
   gMC->Gspos("YS41", 1, "YGO4", 0., 0., dz, 0, "ONLY");  
   dz+=tpar[2];
 
-  tpar[0]=R41-dRSteel2;
-  tpar[1]=R41;
-  tpar[2]=(zvac11-zvac10)/2.;
+  tpar[0]=kR41-kDRSteel2;
+  tpar[1]=kR41;
+  tpar[2]=(kZvac11-kZvac10)/2.;
   gMC->Gsvolu("YS43", "TUBE", idtmed[kPb], 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.;
+  tpar[0]=kR41;
+  tpar[1]=kR42;
+  tpar[2]=(kZvac11-kZvac10)/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.;
+  tpar[0]=kR42-5;
+  tpar[1]=kR42;
+  tpar[2]=(kZvac11-kZvac10)/2.;
   gMC->Gsvolu("YPBO", "TUBE", idtmed[kPb], tpar, 3);
   gMC->Gspos("YPBO", 1, "YPBI", 0., 0., 0., 0, "ONLY"); 
   
@@ -933,27 +887,27 @@ enum {kC=1705, kAl=1708, kFe=1709, kCu=1710, kW=1711, kPb=1712,
 //
 
   tpar[0]=31.;
-  tpar[1]=R43;
-  tpar[2]=(zvac12-zvac11)/2.;
+  tpar[1]=kR43;
+  tpar[2]=(kZvac12-kZvac11)/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[1]=kR43;
   tpar[2]=2.5;
   gMC->Gsvolu("YFEO", "TUBE", idtmed[kFe], tpar, 3);
-  dz=-(zvac12-zvac11)/2.+tpar[2];
+  dz=-(kZvac12-kZvac11)/2.+tpar[2];
   gMC->Gspos("YFEO", 1, "YFEI", 0., 0., dz, 0, "ONLY"); 
 //
 // Magnet element 
 //
   tpar[0]=0.;
-  tpar[1]=R43;
+  tpar[1]=kR43;
   tpar[2]=60.;
   gMC->Gsvolu("YAEM", "TUBE", idtmed[kAir], tpar, 3);
-  tpar[0]=rAbs;
-  tpar[1]=R43;
+  tpar[0]=kRAbs;
+  tpar[1]=kR43;
   tpar[2]=60.;
   gMC->Gsvolu("YFEM", "TUBE", idtmed[kFe], tpar, 3);
   gMC->Gspos("YFEM", 1, "YAEM", 0., 0., 0., 0, "ONLY"); 
@@ -963,7 +917,7 @@ enum {kC=1705, kAl=1708, kFe=1709, kCu=1710, kW=1711, kPb=1712,
   if (gMC->VolId("HUP2")) {
       gMC->Gspos("YAEM", 1, "HUP2", 0., 0., 0., 0, "ONLY");
   } else {
-      dz=zvac12+60.;
+      dz=kZvac12+60.;
       gMC->Gspos("YAEM", 1, "ALIC", 0., 0., dz, 0, "ONLY"); 
   }
 
@@ -973,50 +927,50 @@ enum {kC=1705, kAl=1708, kFe=1709, kCu=1710, kW=1711, kPb=1712,
 //
 // up to closing cone
   
-  Float_t r3V=r3-dr23+dVacuS-1.6;
+  Float_t r3V=r3-kDr23+dVacuS-1.6;
 
-  cpar0[0]=(zvac11-zvac9)/2;
+  cpar0[0]=(kZvac11-kZvac9)/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);
+  cpar0[3]=cpar0[1]+2.*cpar0[0]*TMath::Tan(kThetaOpen3);
+  cpar0[4]=cpar0[2]+2.*cpar0[0]*TMath::Tan(kThetaOpen3);
   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[2]=cpar0[1]+dTubeS+kDInsuS;
   cpar[3]=cpar0[3]+dTubeS;
-  cpar[4]=cpar0[3]+dTubeS+dInsuS;
+  cpar[4]=cpar0[3]+dTubeS+kDInsuS;
   gMC->Gsvolu("YI31", "CONE", idtmed[kInsulation+40], cpar, 5);
   gMC->Gspos("YI31", 1, "YV31", 0., 0., 0., 0, "ONLY"); 
   dz=-dl+cpar[0];
   gMC->Gspos("YV31", 1, "YMO4", 0., 0., dz, 0, "ONLY"); 
 //
 // 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;
+  cpar0[0]=(kZvac12-kZvac11)/2;
+  cpar0[1]=r3V-dVacuS+(kZvac11-kZvac9)*TMath::Tan(kThetaOpen3);
+  cpar0[2]=r3V       +(kZvac11-kZvac9)*TMath::Tan(kThetaOpen3);
+  cpar0[3]=kRVacu;
+  cpar0[4]=kRVacu+dTubeS+kDInsuS+kDProtS+kDFreeS;
   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[2]=cpar0[1]+dTubeS+kDInsuS;
   cpar[3]=cpar0[3]+dTubeS;
-  cpar[4]=cpar0[3]+dTubeS+dInsuS;
+  cpar[4]=cpar0[3]+dTubeS+kDInsuS;
   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"); 
+//  cpar[1]=cpar0[2]-kDProtS-kDFreeS;
+//  cpar[2]=cpar0[2]-kDProtS;
+//  cpar[3]=cpar0[4]-kDProtS-kDFreeS;
+//  cpar[4]=cpar0[4]-kDProtS;
+//  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"); 
@@ -1026,9 +980,9 @@ enum {kC=1705, kAl=1708, kFe=1709, kCu=1710, kW=1711, kPb=1712,
 //  
   tpar[0] = 50.;
   tpar[1] = 310.;
-  tpar[2] = (zFilterOut - zFilterIn) / 2.;
+  tpar[2] = (kZFilterOut - kZFilterIn) / 2.;
   gMC->Gsvolu("YFIM", "TUBE", idtmed[kFe+40], tpar, 3);
-  dz = (zFilterIn + zFilterOut) / 2.;
+  dz = (kZFilterIn + kZFilterOut) / 2.;
   tpar[2] -= 10.;
   gMC->Gsvolu("YFII","TUBE", idtmed[kFe], tpar, 3);
   gMC->Gspos("YFII", 1, "YFIM", 0., 0., 0., 0, "ONLY");
@@ -1037,38 +991,38 @@ enum {kC=1705, kAl=1708, kFe=1709, kCu=1710, kW=1711, kPb=1712,
 // 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);
+  cpar[0]=(kZch11-kZRear)/2.;
+  cpar[1]=kR11;
+  cpar[2]=kZRear*TMath::Tan(kAccMin);
+  cpar[3]=kR11;
+  cpar[4]=(kZRear+2.*cpar[0])*TMath::Tan(kAccMin);
   gMC->Gsvolu("YCS1", "CONE", idtmed[kNiCuW], cpar, 5);
-  dz=-(zvac12-zstart)/2.+(zRear-zstart)+cpar[0];
+  dz=-(kZvac12-zstart)/2.+(kZRear-zstart)+cpar[0];
   gMC->Gspos("YCS1", 1, "YMOT", 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);
+  cpar[0]=(kZvac4-kZch12)/2.;
+  cpar[1]=kR11;
+  cpar[2]=kZch12*TMath::Tan(kAccMin);
+  cpar[3]=kR11;
+  cpar[4]=(kZch12+2.*cpar[0])*TMath::Tan(kAccMin);
   gMC->Gsvolu("YCS3", "CONE", idtmed[kNiCuW], cpar, 5);
-  dz=-(zvac12-zstart)/2.+(zch12-zstart)+cpar[0];
+  dz=-(kZvac12-zstart)/2.+(kZch12-zstart)+cpar[0];
   gMC->Gspos("YCS3", 1, "YMOT", 0., 0., dz, 0, "ONLY");
 
 
 // Recess station 1
 
-  cpar[0]=(zch12-zch11)/2.;
-  cpar[1]=R11;
+  cpar[0]=(kZch12-kZch11)/2.;
+  cpar[1]=kR11;
   cpar[2]=18.;
-  cpar[3]=R11;
+  cpar[3]=kR11;
   cpar[4]=17.9;
   gMC->Gsvolu("YCS2", "CONE", idtmed[kAir], cpar, 5);
-  dz=-(zvac12-zstart)/2.+(zch11-zstart)+cpar[0];
+  dz=-(kZvac12-zstart)/2.+(kZch11-zstart)+cpar[0];
   gMC->Gspos("YCS2", 1, "YMOT", 0., 0., dz, 0, "ONLY");
 
   Float_t ptubs[5];
-  ptubs[0] = R11;
+  ptubs[0] = kR11;
   ptubs[1] = 17.9;
   ptubs[2] =   0.;
 // phi_min, phi_max
@@ -1115,36 +1069,36 @@ enum {kC=1705, kAl=1708, kFe=1709, kCu=1710, kW=1711, kPb=1712,
 
 
   
-  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);
+  cpar[0]=(kZch21-kZvac4)/2.;
+  cpar[1]=kR21;
+  cpar[2]=kZvac4*TMath::Tan(kAccMin);
+  cpar[3]=kR21;
+  cpar[4]=(kZvac4+2.*cpar[0])*TMath::Tan(kAccMin);
   gMC->Gsvolu("YCS4", "CONE", idtmed[kNiCuW], cpar, 5);
-  dz=-(zvac12-zstart)/2.+(zvac4-zstart)+cpar[0];
+  dz=-(kZvac12-zstart)/2.+(kZvac4-zstart)+cpar[0];
   gMC->Gspos("YCS4", 1, "YMOT", 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);
+  cpar[0]=(kZvac6-kZch22)/2.;
+  cpar[1]=kR21;
+  cpar[2]=kZch22*TMath::Tan(kAccMin);
+  cpar[3]=kR21;
+  cpar[4]=(kZch22+2.*cpar[0])*TMath::Tan(kAccMin);
   gMC->Gsvolu("YCS6", "CONE", idtmed[kNiCuW], cpar, 5);
-  dz=-(zvac12-zstart)/2.+(zch22-zstart)+cpar[0];
+  dz=-(kZvac12-zstart)/2.+(kZch22-zstart)+cpar[0];
   gMC->Gspos("YCS6", 1, "YMOT", 0., 0., dz, 0, "ONLY");
   
 // Recess station 2
  
-  cpar[0]=(zch22-zch21)/2.;
-  cpar[1]=R21;
+  cpar[0]=(kZch22-kZch21)/2.;
+  cpar[1]=kR21;
   cpar[2]=23.;
-  cpar[3]=R21;
+  cpar[3]=kR21;
   cpar[4]=23.;
   gMC->Gsvolu("YCS5", "CONE", idtmed[kAir], cpar, 5);
-  dz=-(zvac12-zstart)/2.+(zch21-zstart)+cpar[0];
+  dz=-(kZvac12-zstart)/2.+(kZch21-zstart)+cpar[0];
   gMC->Gspos("YCS5", 1, "YMOT", 0., 0., dz, 0, "ONLY");
 
-  ptubs[0] = R21;
+  ptubs[0] = kR21;
   ptubs[1] = 23;
   ptubs[2] =   0.;
   ptubs[3] =   0.;
@@ -1185,8 +1139,8 @@ enum {kC=1705, kAl=1708, kFe=1709, kCu=1710, kW=1711, kPb=1712,
 // Outer Pb Cone
 
   if (fPbCone) {
-      dl = (zvac10-zch32)/2.;
-      dz = dl+zch32;
+      dl = (kZvac10-kZch32)/2.;
+      dz = dl+kZch32;
       
       par0[0]  = 0.;
       par0[1]  = 360.;
@@ -1194,48 +1148,48 @@ enum {kC=1705, kAl=1708, kFe=1709, kCu=1710, kW=1711, kPb=1712,
 
       par0[ 3]  = -dl;
       par0[ 4]  = 30.;
-      par0[ 5]  = 30.+(zch32-zConeE)*TMath::Tan(thetaOpenPbO);
+      par0[ 5]  = 30.+(kZch32-kZConeE)*TMath::Tan(kThetaOpenPbO);
 
 //    4th station
-      par0[ 6]  = -dz + zch41;
+      par0[ 6]  = -dz + kZch41;
       par0[ 7]  = 30.;
-      par0[ 8]  = 30.+(zch41-zConeE)*TMath::Tan(thetaOpenPbO);
+      par0[ 8]  = 30.+(kZch41-kZConeE)*TMath::Tan(kThetaOpenPbO);
 
-      par0[ 9]  = -dz + zch41;
+      par0[ 9]  = -dz + kZch41;
       par0[10]  = 30.;
       par0[11]  = 37.5;  
                                           // recess erice2000
-      par0[12]  = -dz + zch42;
+      par0[12]  = -dz + kZch42;
       par0[13]  = 30.;
       par0[14]  = par0[11];
 
-      par0[15]  = -dz + zch42;
+      par0[15]  = -dz + kZch42;
       par0[16]  = 30.;
-      par0[17]  = 30.+(zch42-zConeE)*TMath::Tan(thetaOpenPbO);
+      par0[17]  = 30.+(kZch42-kZConeE)*TMath::Tan(kThetaOpenPbO);
 
 //    5th station
-      par0[18]  = -dz + zch51;
+      par0[18]  = -dz + kZch51;
       par0[19]  = 30.;
-      par0[20]  = 30.+(zch51-zConeE)*TMath::Tan(thetaOpenPbO);
+      par0[20]  = 30.+(kZch51-kZConeE)*TMath::Tan(kThetaOpenPbO);
 
-      par0[21]  = -dz + zch51;
+      par0[21]  = -dz + kZch51;
       par0[22]  = 30.;
       par0[23]  = 37.5;  // recess erice2000
 
-      par0[24]  = -dz + zch52;
+      par0[24]  = -dz + kZch52;
       par0[25]  = 30.;
       par0[26]  = par0[23];
 
-      par0[27]  = -dz + zch52;
+      par0[27]  = -dz + kZch52;
       par0[28]  = 30.;
-      par0[29]  = 30.+(zch52-zConeE)*TMath::Tan(thetaOpenPbO);
+      par0[29]  = 30.+(kZch52-kZConeE)*TMath::Tan(kThetaOpenPbO);
 // end of cone
       par0[30]  = +dl;
       par0[31]  = 30.;
       par0[32]  = par0[29];
 //
       gMC->Gsvolu("YOPB", "PCON", idtmed[kPb], par0, 33);
-      dz = -(zvac12-zstart)/2. + (zch32-zstart) + dl;
+      dz = -(kZvac12-zstart)/2. + (kZch32-zstart) + dl;
       gMC->Gspos("YOPB", 1, "YMOT", 0., 0., dz, 0, "ONLY");
   }
 }