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

/* $Id$ */

/////////////////////////////////////////////////////////////////////
//                                                                 //
// T0 ( T-zero) detector  version 0                        //
//
//Begin Html       
/*
<img src="gif/AliT0v0Class.gif">
*/
//End Html
//                                                                  //
//                                                                  //
//////////////////////////////////////////////////////////////////////

#include <Riostream.h>
#include <stdlib.h>

#include <TGeoGlobalMagField.h>
#include <TLorentzVector.h>
#include <TMath.h>
#include <TVirtualMC.h>

#include "AliLog.h"
#include "AliMagF.h"
#include "AliRun.h"
#include "AliT0hit.h"
#include "AliT0v0.h"
#include "AliLog.h"

ClassImp(AliT0v0)

//--------------------------------------------------------------------
AliT0v0::AliT0v0(const char *name, const char *title):
  AliT0(name,title),
  fIdSens1(0)
{
  //
  // Standart constructor for T0 Detector version 0
  //
  //  fIdSens1=0;
//  setBufferSize(128000);
}
//-------------------------------------------------------------------------
void AliT0v0::CreateGeometry()
{
  //
  // Create the geometry of T0 Detector version 0
  // Full geometry with support structure according T0 prototype
  //
  // begin Html
  /*
   <img src="gif/AliT0v0.gif">
  */
  //



  Int_t *idtmed = fIdtmed->GetArray();
  
  Int_t is;
  Int_t idrotm[999];
  Float_t x,y,z;
 Float_t pstartR[18]={0., 360., 5., 
		       -76.5+0.00+69.7, 4.25, 10.,
		       -76.5+6.05+69.7, 4.5, 10., 
		       -76.5+8.05+69.7, 4.5, 10.,
		       -76.5+8.05+69.7, 5.1, 10.,
		       -62.9+0.00+69.7, 5.1, 10.};
  
  Float_t pstart[3]={4.3, 12.,6.8};
  Float_t pinstart[3]={0.,1.6,6.5};
  Float_t ppmt[3]={0.,1.5,3.5};

  Float_t preg[3]={0.,0.875,0.005}; //dobavil bogdanov

  Float_t pdivider[3]={0.,1.2,1.75};
  Float_t pdiv2[3]={0.,1.2,1.25};
  Float_t pdiv1[3]={0.6,1.2,0.5};
  //  Float_t ptop[3]={0.,1.3,1.5};
  Float_t ptop[3]={0.,1.0,1.5};
  Float_t pbot[3]={0.6,1.2,0.1};
  Float_t pglass[3]={1.2,1.3,2.};
  Float_t pcer[3]={0.9,1.1,0.09};
  Float_t psteel[3]={0.9,1.1,0.01};
  Float_t ppins[3]={0.6,1.2,0.014};
  Float_t phole[3]={0.6,1.2,0.015};
  Float_t pknob[3]={0.5,0.6,0.4};
  Float_t pknob_vac[3]={0.,0.5,0.4};
  Float_t pknob_bot[3]={0.,0.6,0.05};
  Float_t pribber[3] = {0.,1.2,2.413/2.};
  Float_t presist[3] = {0.,1.2,0.087/2.};
  Float_t psupport1[3] = {4.51,4.6,4.0};//C kozhuh vnutri
  Float_t psupport2[3] = {9.4,9.5,4.0};// snaruzhi  C
  Float_t psupport3[3] = {4.51,9.5,0.05};//kryshki  C
   Float_t psupport5[3] = {1.44,1.5,6.5}; // stakanchik dlai feu  C
  Float_t psupport6[3] = {0,1.5,0.05}; //kryshechka stakanchika  Al
  Float_t psupport7[3] = {1.5,1.6,0.6}; //kolechko snaruzhu stakanchika Al
  // Mother Volume katushka dlia krepezha vokrug truby k Absorbru
    AliMatrix(idrotm[901], 90., 0., 90., 90., 180., 0.);
  Float_t ppcon[70]; 
    ppcon[0]  =   0;
    ppcon[1]  = 360;
    ppcon[2]  =  13;
//  1: 
    ppcon[3]  =  14.1/2;
    ppcon[4]  =   4.4;
    ppcon[5]  =   4.5;
//  2
    ppcon[6]  = ppcon[3]+1.;
    ppcon[7]  =   4.4;
    ppcon[8]  =   4.5;
//  3
    ppcon[9]  = ppcon[6];
    ppcon[10] =   4.4;
    ppcon[11] =   5.1;

//  4

    ppcon[12]  = ppcon[9]+0.1;
    ppcon[13] =   4.4;
    ppcon[14] =   5.1;
//  5

    ppcon[15]  = ppcon[12];
    ppcon[16] =   4.9;
    ppcon[17] =   5.1;
    
//  6
    ppcon[18]  = ppcon[15]+7.05;
    ppcon[19] =   4.9;
    ppcon[20] =   5.1;
    
//  7
    ppcon[21]  = ppcon[18];
    ppcon[22] =   4.9;
    ppcon[23] =   5.1;

/// 8
    ppcon[24]  = ppcon[21]+0.01;
    ppcon[25] =   3.15;
    ppcon[26] =   3.25;
    
/// 9
    ppcon[27]  = ppcon[24];
    ppcon[28] =   3.15;
    ppcon[29] =   3.25;
    
//  10
    ppcon[30]  = ppcon[27]+4.5;
    ppcon[31] =   3.15;
    ppcon[32] =   3.25;

//  11
    ppcon[33] = ppcon[30];
    ppcon[34] =   3.15;
    ppcon[35] =   3.25;

//  12
    ppcon[36]  = ppcon[33];
    ppcon[37] =   3.15;
    ppcon[38] =   7.6;

//  13
    ppcon[39]  = ppcon[33]+0.4;
    ppcon[40] =   3.15;
    ppcon[41] =   7.6;

//  14
//    ppcon[39]  = ppcon[36];
//    ppcon[40] =   3.15;
//    ppcon[41] =   7.6;

    TVirtualMC::GetMC()->Gsvolu("0SUP", "PCON", idtmed[kAir], ppcon,42);
    z=-69.7;//-14.1/2;
    TVirtualMC::GetMC()->Gspos("0SUP",1,"ALIC",0.,0.,z,idrotm[901],"ONLY");


   Float_t zdetRight=69.7,zdetLeft=350;
 //-------------------------------------------------------------------
 //  T0 volume 
 //-------------------------------------------------------------------
  
    
    TVirtualMC::GetMC()->Gsvolu("0STR","PCON",idtmed[kAir],pstartR,18);
    TVirtualMC::GetMC()->Gsvolu("0STL","TUBE",idtmed[kAir],pstart,3);
    TVirtualMC::GetMC()->Gspos("0STR",1,"ALIC",0.,0.,-zdetRight-pstart[2],idrotm[901],"ONLY");
    TVirtualMC::GetMC()->Gspos("0STL",1,"ALIC",0.,0.,zdetLeft+pstart[2],0,"ONLY");

//T0 interior
    TVirtualMC::GetMC()->Gsvolu("0INS","TUBE",idtmed[kAir],pinstart,3);
    TVirtualMC::GetMC()->Gsvolu("0PMT","TUBE",idtmed[kOpAir],ppmt,3);     
    TVirtualMC::GetMC()->Gsvolu("0DIV","TUBE",idtmed[kVac],pdivider,3);     
    TVirtualMC::GetMC()->Gsvolu("0SU1","TUBE",idtmed[kC],psupport1,3);//C kozhuh vnutri
    TVirtualMC::GetMC()->Gsvolu("0SU2","TUBE",idtmed[kC],psupport2,3);// snaruzhi  C
    TVirtualMC::GetMC()->Gsvolu("0SU3","TUBE",idtmed[kC],psupport3,3);//kryshka perednaiai  C
    TVirtualMC::GetMC()->Gsvolu("0SU4","TUBE",idtmed[kC],psupport3,3);//kryshka zadnaiai  C
    //    TVirtualMC::GetMC()->Gsvolu("0SU5","TUBE",idtmed[kAir],psupport4,3);// dyrki dlia feu v zadnej kryshke Air
    TVirtualMC::GetMC()->Gsvolu("0SU6","TUBE",idtmed[kC],psupport5,3);// stakanchik dlai feu  C
    TVirtualMC::GetMC()->Gsvolu("0SU7","TUBE",idtmed[kAl],psupport6,3);//kryshechka stakanchika  Al
    TVirtualMC::GetMC()->Gsvolu("0SU8","TUBE",idtmed[kAl],psupport7,3);//kolechko snaruzhu stakanchika Al
       
// first ring: 12 units of Scintillator+PMT+divider
  Float_t  theta  = (180 / TMath::Pi()) * TMath::ATan(6.5 / zdetRight);
  Float_t angle  = 2 * TMath::Pi() / 12;
  Float_t phi[3];
    
   for (is=0; is<12; is++)
      {  

	x = 6.5 * TMath::Sin(is * angle);
	y = 6.5 * TMath::Cos(is * angle);
	
	phi[0] = -30 * is;
	phi[1] = 90 - is * 30;
	phi[2] = 90 - is * 30;
	for (Int_t j = 0; j < 3; j++)
	  if (phi[j] < 0)  phi[j] += 360;
	
	AliMatrix (idrotm[902 + is], 90.,         phi[0],
		   90. + theta, phi[1],
		   theta,       phi[2]);  
	z=-pstart[2]+pinstart[2]+0.2;
	TVirtualMC::GetMC()->Gspos ("0INS", is + 1, "0STR", x, y, z, idrotm[902 + is], "ONLY");
	TVirtualMC::GetMC()->Gspos ("0INS", is + 13, "0STL", x, y, z, 0, "ONLY");
	
	x = 9 * TMath::Sin(angle/2+is * angle);
	y = 9 * TMath::Cos(angle/2+is * angle);

	TVirtualMC::GetMC()->Gspos ("0INS", is + 25, "0STL", x, y, z, 0, "ONLY");
		
      }	
   
      
   x=0;
   y=0;
   z=-pinstart[2]+ppmt[2]+2.*psupport6[2]+0.1;
   TVirtualMC::GetMC()->Gspos("0PMT",1,"0INS",x,y,z,0,"ONLY");
   z=z+pdivider[2]+ppmt[2];
   TVirtualMC::GetMC()->Gspos("0DIV",1,"0INS",x,y,z,0,"ONLY");
   
   // PMT
   
   // Entry window (glass)
   TVirtualMC::GetMC()->Gsvolu("0TOP","TUBE",idtmed[kOpGlass],ptop,3); //glass
   //   TVirtualMC::GetMC()->Gsvolu("0TOP","TUBE",idtmed[12],ptop,3); //lucite
   z=-ppmt[2]+ptop[2];
   TVirtualMC::GetMC()->Gspos("0TOP",1,"0PMT",0,0,z,0,"ONLY");
   
   //Fotokatod
   
   TVirtualMC::GetMC()->Gsvolu ("0REG", "TUBE", idtmed[kOpGlass], preg, 3); //photocathode dobavil bogdanov(AliT0v2)
   z = -ppmt[2] + 2 * ptop[2] + preg[2]; //photocathode dobavil bogdanov 
   TVirtualMC::GetMC()->Gspos ("0REG", 1, "0PMT", 0, 0, z, 0, "ONLY"); //photocathode dobavil bogdanov(AliT0v2)
   
   // Bottom glass
   TVirtualMC::GetMC()->Gsvolu("0BOT","TUBE",idtmed[kGlass],pbot,3);
   z=ppmt[2]-pbot[2];
   AliDebugClass(1,Form(" Z bottom %f\n",z));
   TVirtualMC::GetMC()->Gspos("0BOT",1,"0PMT",0,0,z,0,"ONLY");
   // Side cylinder glass
   TVirtualMC::GetMC()->Gsvolu("0OUT","TUBE",idtmed[kGlass],pglass,3);
   z=ppmt[2]-pglass[2];
   TVirtualMC::GetMC()->Gspos("0OUT",1,"0PMT",0,0,z,0,"ONLY");
   //PMT electrodes support structure
   TVirtualMC::GetMC()->Gsvolu("0CER","TUBE",idtmed[kCer],pcer,3);
   TVirtualMC::GetMC()->Gsvolu("0STE","TUBE",idtmed[kSteel],psteel,3);
   z=-ppmt[2]+2*ptop[2]+0.3;;
   for (is=1; is<=15; is++)
     {
       z=z+psteel[2]+pcer[2];
       TVirtualMC::GetMC()->Gspos("0CER",is,"0PMT",0,0,z,0,"ONLY");
       z=z+psteel[2]+pcer[2];
       TVirtualMC::GetMC()->Gspos("0STE",is,"0PMT",0,0,z,0,"ONLY");
     }
   
   // Divider
   // Knob at the bottom of PMT baloon
   
   TVirtualMC::GetMC()->Gsvolu("0NB","TUBE",idtmed[6],pknob,3);
   z=-pdivider[2]+pknob[2];
   TVirtualMC::GetMC()->Gspos("0NB",1,"0DIV",0,0,z,0,"ONLY");
   TVirtualMC::GetMC()->Gsvolu("0KB","TUBE",idtmed[kGlass],pknob_bot,3);
   z=-pdivider[2]+2*pknob[2]+pknob_bot[2];
   TVirtualMC::GetMC()->Gspos("0KB",1,"0DIV ",0,0,z,0,"ONLY");
   TVirtualMC::GetMC()->Gsvolu("0VAC","TUBE",idtmed[kVac],pknob_vac,3);
   z=-pdivider[2]+pknob_vac[2];
   TVirtualMC::GetMC()->Gspos("0VAC",1,"0DIV",0,0,z,0,"ONLY");
   //Steel pins + pin holes
   TVirtualMC::GetMC()->Gsvolu("0PIN","TUBE",idtmed[kSteel],ppins,3);
   z=-pdivider[2]+ppins[2];
   TVirtualMC::GetMC()->Gspos("0PIN",1,"0DIV",0,0,z,0,"ONLY");
   TVirtualMC::GetMC()->Gsvolu("0HOL","TUBE",idtmed[kBrass],phole,3);
   z=-pdivider[2]+2*ppins[2]+phole[2];
   TVirtualMC::GetMC()->Gspos("0HOL",1,"0DIV",0,0,z,0,"ONLY");
   
   //Socket
   TVirtualMC::GetMC()->Gsvolu("0V1","TUBE",idtmed[kCer],pdiv1,3);
   z=-pdivider[2]+pdiv1[2];
   TVirtualMC::GetMC()->Gspos("0V1",1,"0DIV",0,0,z,0,"ONLY");
   //Resistors
   TVirtualMC::GetMC()->Gsvolu("0V2","TUBE",idtmed[kAir],pdiv2,3);
   z=pdivider[2]-pdiv2[2];
   TVirtualMC::GetMC()->Gspos("0V2",1,"0DIV",0,0,z,0,"ONLY");
   TVirtualMC::GetMC()->Gsvolu("0RS","TUBE",idtmed[kCer],presist,3);
   z=-pdiv2[2]+presist[2];
   TVirtualMC::GetMC()->Gspos("0RS",1,"0V2",0,0,z,0,"ONLY");
   TVirtualMC::GetMC()->Gsvolu("0RB","TUBE",idtmed[kRibber],pribber,3);
   z=pdiv2[2]-pribber[2];
   TVirtualMC::GetMC()->Gspos("0RB",1,"0V2",0,0,z,0,"ONLY");
   
   
   //Support  left side
   /*   
   z=-pstart[2]+psupport1[2];
   TVirtualMC::GetMC()->Gspos("0SU1",2,"0STL",0,0,z,0,"ONLY"); //C kozhuh snaruzhi
   TVirtualMC::GetMC()->Gspos("0SU2",2,"0STL",0,0,z,0,"ONLY"); //C kozhuh vnutri
   z=-pstart[2]+psupport3[2];
   TVirtualMC::GetMC()->Gspos("0SU3",2,"0STL",0,0,z,0,"ONLY"); //peredniaia kryshka
   z=-pstart[2]+2.*psupport1[2];
   TVirtualMC::GetMC()->Gspos("0SU4",2,"0STL",0,0,z,0,"MANY"); //zadnaiai kryshka
   */
   z=-pstart[2]+psupport1[2]+0.1;
   TVirtualMC::GetMC()->Gspos("0SU1",1,"0STR",0,0,z,0,"ONLY"); //C kozhuh snaruzhi
   TVirtualMC::GetMC()->Gspos("0SU2",1,"0STR",0,0,z,0,"ONLY"); //C kozhuh vnutri
   z=-pstart[2]+psupport3[2]+0.1;
   TVirtualMC::GetMC()->Gspos("0SU3",1,"0STR",0,0,z,0,"ONLY"); //peredniaia kryshka
   z=-pstart[2]+2.*psupport1[2]+0.1;
   TVirtualMC::GetMC()->Gspos("0SU4",1,"0STR",0,0,z,0,"MANY"); //zadnaiai kryshka
   TVirtualMC::GetMC()->Gspos("0SU6",1,"0INS",0,0,0,0,"ONLY");//C stakanchik dlia feu 
   z=-pinstart[2]+psupport6[2];
   TVirtualMC::GetMC()->Gspos("0SU7",1,"0INS",0,0,z,0,"ONLY"); //Al kryshechka 
   
   z=pinstart[2]-psupport7[2];
   TVirtualMC::GetMC()->Gspos("0SU8",1,"0INS",0,0,z,0,"ONLY"); //Al kolechko
   
   
   Float_t par[3];
   par[0]=4.4;
   par[1]=4.5;
   par[2]=0.5;
   TVirtualMC::GetMC()->Gsvolu("0SC0","TUBE",idtmed[kC],par,3);
   z=ppcon[3]+par[2];
   TVirtualMC::GetMC()->Gspos("0SC0",1,"0SUP",0,0,z,0,"ONLY"); 
   z += par[2];
   par[0]=4.4;
   par[1]=5.1;
   par[2]=0.05;
   TVirtualMC::GetMC()->Gsvolu("0SC1","TUBE",idtmed[kC],par,3);
   z += par[2];
   TVirtualMC::GetMC()->Gspos("0SC1",1,"0SUP",0,0,z,0,"ONLY"); 
   z=z+par[2];
   par[0]=4.9;
   par[1]=5.0;
   par[2]=6.9/2;
    TVirtualMC::GetMC()->Gsvolu("0SC2","TUBE",idtmed[kC],par,3);
    z += par[2];
    TVirtualMC::GetMC()->Gspos("0SC2",1,"0SUP",0,0,z,0,"ONLY"); 
    z += par[2];
    /*
    Float_t parC[5];
    parC[0]=0.25;
    parC[1]=5.1;
    parC[2]=5.2;
    parC[3]=5.5;
    parC[4]=5.6;
    TVirtualMC::GetMC()->Gsvolu("0SC3","CONE",idtmed[kC],parC,5);
    z += parC[0];
    TVirtualMC::GetMC()->Gspos("0SC3",1,"0SUP",0,0,z,0,"ONLY"); 
    z += parC[0];
    par[0]=5.5;
    par[1]=5.6;
    par[2]=1.2/2;
    TVirtualMC::GetMC()->Gsvolu("0SC4","TUBE",idtmed[kC],par,3);
    z += par[2];
    TVirtualMC::GetMC()->Gspos("0SC4",1,"0SUP",0,0,z,0,"ONLY"); 
    par[0]=5.1;
    par[1]=5.5;
    par[2]=1.2/2;
    TVirtualMC::GetMC()->Gsvolu("0SA0","TUBE",idtmed[kAl],par,3);
    TVirtualMC::GetMC()->Gspos("0SA0",1,"0SUP",0,0,z,0,"ONLY"); 
    //gvozdi dlia skruchivaniia Al i C parts
    par[0]=5.75; 
    par[1]=5.78;
    TVirtualMC::GetMC()->Gsvolu("0SN1","TUBE",idtmed[kSteel],par,3);
    TVirtualMC::GetMC()->Gspos("0SN1",1,"0SUP",0,0,z,0,"ONLY"); 
    z += par[2];
    */
    par[0]=3.15;
    par[1]=4.9;
    par[2]=0.1/2;
    TVirtualMC::GetMC()->Gsvolu("0SA1","TUBE",idtmed[kAl],par,3);
    
    z += par[2];
    TVirtualMC::GetMC()->Gspos("0SA1",1,"0SUP",0,0,z,0,"ONLY"); 
    z=z+par[2];
    par[0]=3.15;
    par[1]=3.16;
    par[2]=4.5/2;
    TVirtualMC::GetMC()->Gsvolu("0SA2","TUBE",idtmed[kAl],par,3);
    z += par[2];
    TVirtualMC::GetMC()->Gspos("0SA2",1,"0SUP",0,0,z,0,"ONLY"); 
    z=z+par[2];
    par[0]=3.16; // eta chast' prikruchena k absorberu
    par[1]=7.5;
    par[2]=0.2;
    TVirtualMC::GetMC()->Gsvolu("0SA3","TUBE",idtmed[kAl],par,3);
    z += par[2];
    TVirtualMC::GetMC()->Gspos("0SA3",1,"0SUP",0,0,z,0,"ONLY"); 
    par[0]=3.16; // gvozdi eta chast' prikruchena k absorberu
    par[1]=7.5;
    par[2]=0.01;
    TVirtualMC::GetMC()->Gsvolu("0SN2","TUBE",idtmed[kSteel],par,3);
    TVirtualMC::GetMC()->Gspos("0SN2",1,"0SUP",0,0,z,0,"ONLY"); 
    
 
}    

//------------------------------------------------------------------------
void AliT0v0::CreateMaterials()
{
   Int_t isxfld   = ((AliMagF*)TGeoGlobalMagField::Instance()->GetField())->Integ();
   Float_t sxmgmx = ((AliMagF*)TGeoGlobalMagField::Instance()->GetField())->Max();
   Double_t a,z,d,radl,absl;
   TArrayD par;

// Scintillator CH
   Float_t ascin[2]={1.01,12.01};
   Float_t zscin[2]={1,6};
   Float_t wscin[2]={1,1};
   Float_t denscin=1.03;
//Lucite C(CH3)CO2CH3
   Float_t alucite[3]={1.01,12.01,15.999};
   Float_t zlucite[3]={1,6,8};
   Float_t wlucite[3]={8,5,2};
   Float_t denlucite=1.16;
 // PMT glass SiO2
   Float_t aglass[2]={28.0855,15.9994};
   Float_t zglass[2]={14.,8.};
   Float_t wglass[2]={1.,2.};
   Float_t dglass=2.65;
// Ceramic   97.2% Al2O3 , 2.8% SiO2
   Float_t acer[2],zcer[2],wcer[2]={0.972,0.028};
   Float_t aal2o3[2]  = { 26.981539,15.9994 };
   Float_t zal2o3[2]  = { 13.,8. };
   Float_t wal2o3[2]  = { 2.,3. };
   Float_t denscer  = 3.6;

// Brass 80% Cu, 20% Zn
   Float_t abrass[2] = {63.546,65.39};
   Float_t zbrass[2] = {29,30};
   Float_t wbrass[2] = {0.8,0.2};
   Float_t denbrass=8.96;

//Ribber C6H12S
   Float_t aribber[3] = {12.,1.,32.};
   Float_t zribber[3] = {6.,1.,16.};
   Float_t wribber[3] = {6.,12.,1.};
   Float_t denribber=0.8;
// Support inside 
   Float_t asupport[2] = {12.,1.};
   Float_t zsupport[2] = {6.,1.};
   Float_t wsupport[2] = {1.,1.};
   Float_t densupport=0.1;
// AIR
   Float_t aAir[4]={12.0107,14.0067,15.9994,39.948};
   Float_t zAir[4]={6.,7.,8.,18.};
   Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
   Float_t dAir = 1.20479E-3;
     
//*** Definition Of avaible T0 materials ***
   AliMaterial(0, "T0 Steel$", 55.850,26.,7.87,1.76,999);
   AliMaterial(1, "T0 Vacuum$", 1.e-16,1.e-16,1.e-16,1.e16,999);
   AliMixture(2, "T0 Air$", aAir, zAir, dAir,4,wAir);

   AliMaterial(10, "CarbonPlastic$", 12.01, 6.0, 2.26, 18.8,999); 
   AliMaterial(11, "Aliminium$", 26.98, 13.0, 2.7, 8.9,999); 

   AliMixture( 3, "Al2O3   $", aal2o3, zal2o3, denscer, -2, wal2o3);
   AliMixture( 4, "PMT glass   $",aglass,zglass,dglass,-2,wglass);
   TString namate;
   TVirtualMC::GetMC()->GetMaterial((*fIdmate)[3], namate, a, z, d, radl, absl, par);
   acer[0]=a;
   zcer[0]=z;
   TVirtualMC::GetMC()->GetMaterial((*fIdmate)[4], namate, a, z, d, radl, absl, par);
   acer[1]=a;
   zcer[1]=z;
   
   AliMixture( 9, "Ceramic    $", acer, zcer, denscer, 2, wcer);
   AliMixture( 5, "Scintillator$",ascin,zscin,denscin,-2,wscin);
   AliMixture( 6, "Brass    $", abrass, zbrass, denbrass, 2, wbrass);
   
   AliMixture( 7, "Ribber $",aribber,zribber,denribber,-3,wribber);
   AliMixture( 8, "Lucite$",alucite,zlucite,denlucite,-3,wlucite);
   AliMixture( 9, "Penoplast$",asupport,zsupport,densupport,-2,wsupport);
 
   
   AliMedium(1, "T0 Air$", 2, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
   AliMedium(2, "Scintillator$", 5, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);
   AliMedium(3, "Vacuum$", 1, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
   AliMedium(4, "Ceramic$", 9, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
   AliMedium(6, "Glass$", 4, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
   AliMedium(8, "Steel$", 0, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
   AliMedium(9, "Ribber  $", 7, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
   AliMedium(11, "Brass  $", 6, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
   AliMedium(12, "Lucite$", 8, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);  
   AliMedium(13, "CarbonPlastic$", 10, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);  
   AliMedium(14, "PenoPlast$", 9, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);  
   AliMedium(15, "Aluminium$", 11, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);  

   AliDebugClass(1,": ++++++++++++++Medium set++++++++++");

}

//-------------------------------------------------------------------
void AliT0v0::Init()
{
// Initialises version 0 of the Forward Multiplicity Detector
//
//Int_t *idtmed  = gAlice->Idtmed();
  AliT0::Init();
  fIdSens1=TVirtualMC::GetMC()->VolId("0TOP");
  AliDebug(1,Form("%s: *** T0 version 0 initialized ***\n",ClassName()));
  
}

//-------------------------------------------------------------------

void AliT0v0::StepManager()
{
  //
  // Called for every step in the T0 Detector
  // See AliT0v1

}
//---------------------------------------------------------------------