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

//************************************************************************
//                 Inner Traking System geometry v11
//
//  Based on ROOT geometrical modeler
//  Set #define WITHROOT in TGeant3.h
//
// B. Nilsen, L. Gaudichet
//************************************************************************


//#include <Riostream.h>
#include <TClonesArray.h>
#include <TLorentzVector.h>

#include "AliITS.h"
#include "AliITSDetType.h"
#include "AliITSGeant3Geometry.h"
#include "AliITSgeom.h"
#include "AliITSgeomSDD.h"
#include "AliITSgeomSPD.h"
#include "AliITSgeomSSD.h"
#include "AliITShit.h"
#include "AliITSresponseSDD.h"
#include "AliITSresponseSPD.h"
#include "AliITSresponseSSD.h"
#include "AliITSsegmentationSDD.h"
#include "AliITSsegmentationSPD.h"
#include "AliITSsegmentationSSD.h"
#include "AliITSv11.h"
#include "AliMagF.h"
#include "AliRun.h"
#include "AliTrackReference.h"
#include "AliMC.h"

#include <TGeoManager.h>
#include <TGeoVolume.h>
#include <TGeoPcon.h>
//#include "AliITSv11GeometrySPD.h"
#include "AliITSv11GeometrySDD.h"
//#include "AliITSv11GeometrySupport.h"



ClassImp(AliITSv11)
 


AliITSv11::AliITSv11() : AliITS()
{
  //    Standard default constructor for the ITS version 11.
  fGeomDetOut=kFALSE;
  fGeomDetIn=kFALSE;
  fMajorVersion=11;
  fMinorVersion=0;
  Int_t i;
  for(i=0;i<60;i++) fRead[i] = '\0';
  for(i=0;i<60;i++) fWrite[i] = '\0';
  for(i=0;i<60;i++) fEuclidGeomDet[i] = '\0';
  strncpy(fRead,"$ALICE_ROOT/ITS/ITSgeometry_vPPRasymmFMD.det",60);
  SetEUCLID(kFALSE);

//   fSPDgeom = new AliITSv11GeometrySPD();
  fSDDgeom = new AliITSv11GeometrySDD();
//   fSupgeom = new AliITSv11GeometrySupport();

  fIdN = 1;         
  fIdName    = new TString[fIdN];
  fIdName[0] = fSDDgeom->GetSenstiveVolumeMame();
  fIdSens    = new Int_t[fIdN];
  for(Int_t i=0; i<fIdN; i++) fIdSens[i] = 0;
}


//______________________________________________________________________
AliITSv11::AliITSv11(const char *name, const char *title)
  : AliITS("ITS", title)
{
  //    Standard constructor for the ITS version 11.

  fGeomDetOut = kFALSE;
  fGeomDetIn = kFALSE;
  fMajorVersion = 11;
  fMinorVersion = 0;
  printf("%s\n constructor",name);

  Int_t i;
  for(i=0;i<60;i++) fRead[i] = '\0';
  for(i=0;i<60;i++) fWrite[i] = '\0';
  for(i=0;i<60;i++) fEuclidGeomDet[i] = '\0';
  strncpy(fRead,"$ALICE_ROOT/ITS/ITSgeometry_vPPRasymmFMD.det",60);
  SetEUCLID(kFALSE);

//   fSPDgeom = new AliITSv11GeometrySPD();
  fSDDgeom = new AliITSv11GeometrySDD();
//   fSupgeom = new AliITSv11GeometrySupport();

  fIdN = 1;         
  fIdName    = new TString[fIdN];
  fIdName[0] = fSDDgeom->GetSenstiveVolumeMame();
  fIdSens    = new Int_t[fIdN];
  for(Int_t i=0; i<fIdN; i++) fIdSens[i] = 0;
}



//______________________________________________________________________
AliITSv11::AliITSv11(Int_t debugITS,Int_t debugSPD,Int_t debugSDD,
		   Int_t debugSSD,Int_t debugSUP) :
  AliITS("ITS","ITS geometry v11"),
  fGeomDetOut(kFALSE),
  fGeomDetIn(kFALSE),
  fMajorVersion(11),
  fMinorVersion(0) {
  // Standard default constructor for the ITS version 11.
  // Inputs:
  //   Int_t    debugITS  Debug flag for ITS code (required).
  //   Int_t    debugSPD  Debug flag for SPD geometry (default = 0).
  //   Int_t    debugSDD  Debug flag for SDD geometry (default = 0).
  //   Int_t    debugSSD  Debug flag for SSD geometry (default = 0).
  //   Int_t    debugSUP  Debug flag for SUPort geometry (default = 0).
  // Outputs:
  //   none.
  // Return

  SetDensityServicesByThickness();

  SetEUCLID(kFALSE);
  fEuclidGeometry="$ALICE_ROOT/ITS/ITSgeometry_vPPRasymm2.euc";
  strncpy(fEuclidGeomDet,"$ALICE_ROOT/ITS/ITSgeometry_vPPRasymm2.det",60);
  strncpy(fRead,fEuclidGeomDet,60);
  strncpy(fWrite,fEuclidGeomDet,60);
  strncpy(fRead,"$ALICE_ROOT/ITS/ITSgeometry_vPPRasymmFMD.det",60);

//   fSPDgeom = new AliITSv11GeometrySPD(debugSPD);
  fSDDgeom = new AliITSv11GeometrySDD(debugSDD);
//   fSupgeom = new AliITSv11GeometrySupport(debugSUP);

  fIdN = 1;         
  fIdName    = new TString[fIdN];
  fIdName[0] = fSDDgeom->GetSenstiveVolumeMame();
  fIdSens    = new Int_t[fIdN];
  for(Int_t i=0; i<fIdN; i++) fIdSens[i] = 0;

  debugITS = (debugSPD && debugSSD && debugSUP && debugSDD); //remove temp. warnings
}


//______________________________________________________________________
AliITSv11::AliITSv11(const AliITSv11 &source) :
 AliITS(source){
    //     Copy Constructor for ITS version 11. This function is not to be
    // used. If any other instance of this function, other than "this" is
    // passed, an error message is returned.
    // Inputs:
    //   const AliITSv11 &source This class

    if(&source == this) return;
    Warning("Copy Constructor","Not allowed to copy AliITSv11");
    return;
}


//______________________________________________________________________
AliITSv11& AliITSv11::operator=(const AliITSv11 
						  &source){
    //     Assignment operator for the ITS version 11. This function is not 
    // to be used. If any other instance of this function, other than "this" 
    // is passed, an error message is returned.
    // Inputs:
    //   const AliITSv11 &source This class

    if(&source == this) return *this;
    Warning("= operator","Not allowed to copy AliITSv11");
    return *this;
}


//______________________________________________________________________
AliITSv11::~AliITSv11() {
  delete fSDDgeom;
}


//______________________________________________________________________
void AliITSv11::BuildGeometry(){

}


//______________________________________________________________________
void AliITSv11::CreateGeometry(){
  //
  // Create ROOT geometry
  //

  TGeoManager *geoManager = gGeoManager;
  TGeoVolume *vALIC = geoManager->GetTopVolume();

  TGeoPcon *sITS = new TGeoPcon("ITS Top Volume",0.0,360.0,2);

  // DefineSection(section number, Z, Rmin, Rmax).
  const Double_t kcm = 1.0;
  sITS->DefineSection(0,-300.0*kcm,0.01*kcm,50.0*kcm);
  sITS->DefineSection(1,+300.0*kcm,0.01*kcm,50.0*kcm);

  TGeoMedium *air = gGeoManager->GetMedium("ITSair");
  TGeoVolume *vITS = new TGeoVolume("vITS",sITS,air);
  vITS->SetVisibility(kFALSE);
  vALIC->AddNode(vITS,1,0);

//   fSPDgeom->CenteralSPD(vITS);

//   fSDDgeom->AddOnlyLay3Ladder(0,1);
//   fSDDgeom->AddOnlyLay4Ladder(0,1);
  fSDDgeom->Layer3(vITS);
  fSDDgeom->Layer4(vITS);

//     fSupgeom->SPDCone(vITS);
//     fSupgeom->SPDThermalSheald(vITS);
//     fSupgeom->SDDCone(vITS);
//     fSupgeom->SSDCone(vITS);
//     fSupgeom->ServicesCableSupport(vITS);

}


//______________________________________________________________________
void AliITSv11::CreateMaterials(){
  //
  // Create ITS materials
  // Defined media here should correspond to the one defined in galice.cuts
  // File which is red in (AliMC*) fMCApp::Init() { ReadTransPar(); }
  //

    Int_t   ifield = gAlice->Field()->Integ();
    Float_t fieldm = gAlice->Field()->Max();

    Float_t tmaxfd = 0.1; // 1.0; // Degree
    Float_t stemax = 1.0; // cm
    Float_t deemax = 0.1; // 30.0; // Fraction of particle's energy 0<deemax<=1
    Float_t epsil  = 1.0E-4; // 1.0; // cm
    Float_t stmin  = 0.0; // cm "Default value used"

    Float_t tmaxfdSi = 0.1; // .10000E+01; // Degree
    Float_t stemaxSi = 0.0075; //  .10000E+01; // cm
    Float_t deemaxSi = 0.1; // 0.30000E-02; // Fraction of particle's energy 0<deemax<=1
    Float_t epsilSi  = 1.0E-4;// .10000E+01;
    Float_t stminSi  = 0.0; // cm "Default value used"

    Float_t tmaxfdAir = 0.1; // .10000E+01; // Degree
    Float_t stemaxAir = .10000E+01; // cm
    Float_t deemaxAir = 0.1; // 0.30000E-02; // Fraction of particle's energy 0<deemax<=1
    Float_t epsilAir  = 1.0E-4;// .10000E+01;
    Float_t stminAir  = 0.0; // cm "Default value used"

    Float_t tmaxfdServ = 1.0; // 10.0; // Degree
    Float_t stemaxServ = 1.0; // 0.01; // cm
    Float_t deemaxServ = 0.5; // 0.1; // Fraction of particle's energy 0<deemax<=1
    Float_t epsilServ  = 1.0E-3; // 0.003; // cm
    Float_t stminServ  = 0.0; //0.003; // cm "Default value used"

    // Freon PerFluorobuthane C4F10 see 
    // http://st-support-cooling-electronics.web.cern.ch/
    //        st-support-cooling-electronics/default.htm
    Float_t afre[2]  = { 12.011,18.9984032 };
    Float_t zfre[2]  = { 6., 9. };
    Float_t wfre[2]  = { 4.,10. };
    Float_t densfre  = 1.52;


    //CM55J
    Float_t aCM55J[4]={12.0107,14.0067,15.9994,1.00794};
    Float_t zCM55J[4]={6.,7.,8.,1.};
    Float_t wCM55J[4]={0.908508078,0.010387573,0.055957585,0.025146765};
    Float_t dCM55J = 1.63;

    //ALCM55J
    Float_t aALCM55J[5]={12.0107,14.0067,15.9994,1.00794,26.981538};
    Float_t zALCM55J[5]={6.,7.,8.,1.,13.};
    Float_t wALCM55J[5]={0.817657902,0.0093488157,0.0503618265,0.0226320885,0.1};
    Float_t dALCM55J = 1.9866;

    //Si Chips
    Float_t aSICHIP[6]={12.0107,14.0067,15.9994,1.00794,28.0855,107.8682};
    Float_t zSICHIP[6]={6.,7.,8.,1.,14., 47.};
    Float_t wSICHIP[6]={0.039730642,0.001396798,0.01169634,
			0.004367771,0.844665,0.09814344903};
    Float_t dSICHIP = 2.36436;

    //Inox
    Float_t aINOX[9]={12.0107,54.9380, 28.0855,30.9738,32.066,
		      58.6928,55.9961,95.94,55.845};
    Float_t zINOX[9]={6.,25.,14.,15.,16., 28.,24.,42.,26.};
    Float_t wINOX[9]={0.0003,0.02,0.01,0.00045,0.0003,0.12,0.17,0.025,0.654};
    Float_t dINOX = 8.03;

    //SDD HV microcable
    Float_t aHVm[5]={12.0107,1.00794,14.0067,15.9994,26.981538};
    Float_t zHVm[5]={6.,1.,7.,8.,13.};
    Float_t wHVm[5]={0.520088819984,0.01983871336,0.0551367996,0.157399667056, 0.247536};
    Float_t dHVm = 1.6087;

    //SDD LV+signal cable
    Float_t aLVm[5]={12.0107,1.00794,14.0067,15.9994,26.981538};
    Float_t zLVm[5]={6.,1.,7.,8.,13.};
    Float_t wLVm[5]={0.21722436468,0.0082859922,0.023028867,0.06574077612, 0.68572};
    Float_t dLVm = 2.1035;

    //SDD hybrid microcab
    Float_t aHLVm[5]={12.0107,1.00794,14.0067,15.9994,26.981538};
    Float_t zHLVm[5]={6.,1.,7.,8.,13.};
    Float_t wHLVm[5]={0.24281879711,0.00926228815,0.02574224025,0.07348667449, 0.64869};
    Float_t dHLVm = 2.0502;

    //SDD anode microcab
    Float_t aALVm[5]={12.0107,1.00794,14.0067,15.9994,26.981538};
    Float_t zALVm[5]={6.,1.,7.,8.,13.};
    Float_t wALVm[5]={0.392653705471,0.0128595919215,
		      0.041626868025,0.118832707289, 0.431909};
    Float_t dALVm = 2.0502;

    //X7R capacitors
    Float_t aX7R[7]={137.327,47.867,15.9994,58.6928,63.5460,118.710,207.2};
    Float_t zX7R[7]={56.,22.,8.,28.,29.,50.,82.};
    Float_t wX7R[7]={0.251639432,0.084755042,0.085975822,
		     0.038244751,0.009471271,0.321736471,0.2081768};
    Float_t dX7R = 7.14567;

    // 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;

    // Water
    Float_t aWater[2]={1.00794,15.9994};
    Float_t zWater[2]={1.,8.};
    Float_t wWater[2]={0.111894,0.888106};
    Float_t dWater   = 1.0;

    // CERAMICS
  //     94.4% Al2O3 , 2.8% SiO2 , 2.3% MnO , 0.5% Cr2O3
    Float_t acer[5]  = { 26.981539,15.9994,28.0855,54.93805,51.9961 };
    Float_t zcer[5]  = {       13.,     8.,    14.,     25.,    24. };
    Float_t wcer[5]  = {.4443408,.5213375,.0130872,.0178135,.003421};
    Float_t denscer  = 3.6;

    //G10FR4
    Float_t zG10FR4[14] = {14.00,	20.00,	13.00,	12.00,	5.00,
			   22.00,	11.00,	19.00,	26.00,	9.00,
			   8.00,	6.00,	7.00,	1.00};
    Float_t aG10FR4[14] = {28.0855000,40.0780000,26.9815380,24.3050000,
			   10.8110000,47.8670000,22.9897700,39.0983000,
			   55.8450000,18.9984000,15.9994000,12.0107000,
			   14.0067000,1.0079400};
    Float_t wG10FR4[14] = {0.15144894,0.08147477,0.04128158,0.00904554,
			   0.01397570,0.00287685,0.00445114,0.00498089,
			   0.00209828,0.00420000,0.36043788,0.27529426,
			   0.01415852,0.03427566};
    Float_t densG10FR4= 1.8;
    
     //--- EPOXY  --- C18 H19 O3
      Float_t aEpoxy[3] = {15.9994, 1.00794, 12.0107} ; 
      Float_t zEpoxy[3] = {     8.,      1.,      6.} ; 
      Float_t wEpoxy[3] = {     3.,     19.,     18.} ; 
      Float_t dEpoxy = 1.8 ;

      // rohacell: C9 H13 N1 O2
    Float_t arohac[4] = {12.01,  1.01, 14.010, 16.};
    Float_t zrohac[4] = { 6.,    1.,    7.,     8.};
    Float_t wrohac[4] = { 9.,   13.,    1.,     2.};
    Float_t drohac    = 0.05;

    // If he/she means stainless steel (inox) + Aluminium and Zeff=15.3383 then
//
// %Al=81.6164 %inox=100-%Al

    Float_t aInAl[5] = {27., 55.847,51.9961,58.6934,28.0855 };
    Float_t zInAl[5] = {13., 26.,24.,28.,14. };
    Float_t wInAl[5] = {.816164, .131443,.0330906,.0183836,.000919182};
    Float_t dInAl    = 3.075;

    // Kapton
    Float_t aKapton[4]={1.00794,12.0107, 14.010,15.9994};
    Float_t zKapton[4]={1.,6.,7.,8.};
    Float_t wKapton[4]={0.026362,0.69113,0.07327,0.209235};
    Float_t dKapton   = 1.42;

    //SDD ruby sph.
    Float_t aAlOxide[2]  = { 26.981539,15.9994};
    Float_t zAlOxide[2]  = {       13.,     8.};
    Float_t wAlOxide[2]  = {0.4707, 0.5293};
    Float_t dAlOxide     = 3.97;

    //---------
    AliMaterial(1,"ITSsddSi",0.28086E+02,0.14000E+02,0.23300E+01,0.93600E+01,0.99900E+03);
    AliMedium(1,"ITSsddSi",1,0,ifield,fieldm,tmaxfdSi,stemaxSi,deemaxSi,epsilSi,stminSi);
    
    AliMixture(5,"ITSair",aAir,zAir,dAir,4,wAir);
    AliMedium(5,"ITSair",5,0,ifield,fieldm,tmaxfdAir,stemaxAir,deemaxAir,epsilAir,stminAir);
    
    AliMixture(7,"ITSsddSiChip",aSICHIP,zSICHIP,dSICHIP,6,wSICHIP);
    AliMedium(7,"ITSsddSiChip",7,0,ifield,fieldm,tmaxfdSi,stemaxSi,deemaxSi,epsilSi,stminSi);

    AliMaterial(79,"SDD SI insensitive$",0.28086E+02,0.14000E+02,0.23300E+01,0.93600E+01,0.99900E+03);
    AliMedium(79,"SDD SI insensitive$",79,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);

    AliMaterial(11,"ITSal",0.26982E+02,0.13000E+02,0.26989E+01,0.89000E+01,0.99900E+03);
    AliMedium(11,"ITSal",11,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);

    AliMixture(9,"ITSsddCarbonM55J",aCM55J,zCM55J,dCM55J,4,wCM55J);
    AliMedium(9,"ITSsddCarbonM55J",9,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);

    AliMixture(10,"SDD AIR$",aAir,zAir,dAir,4,wAir);
    AliMedium(10,"SDD AIR$",10,0,ifield,fieldm,tmaxfdAir,stemaxAir,deemaxAir,epsilAir,stminAir);

    AliMixture(12, "WATER",aWater,zWater,dWater,2,wWater);
    AliMedium(12,"WATER",12,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);

     AliMixture(69,"ITSsddCAlM55J",aALCM55J,zALCM55J,dALCM55J,5,wALCM55J);
    AliMedium(69,"ITSsddCAlM55J",69,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);
  
    AliMixture(70, "ITSsddKAPTON_POLYCH2", aKapton, zKapton, dKapton, 4, wKapton);
    AliMedium(70,"ITSsddKAPTON_POLYCH2",70,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);

    AliMixture(77,"SDDX7Rcapacitors",aX7R,zX7R,dX7R,7,wX7R);
    AliMedium(77,"SDDX7Rcapacitors",77,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);

    AliMixture(78,"SDD ruby sph. Al2O3$",aAlOxide,zAlOxide,dAlOxide,2,wAlOxide);
    AliMedium(78,"SDD ruby sph. Al2O3$",78,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);


    AliMaterial(64,"ALUMINUM$",0.26982E+02,0.13000E+02,0.26989E+01,0.89000E+01,0.99900E+03);
    AliMedium(64,"ALUMINUM$",64,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);

    AliMaterial(14,"COPPER",0.63546E+02,0.29000E+02,0.89600E+01,0.14300E+01,0.99900E+03);
    AliMedium(14,"COPPER",14,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);

    AliMaterial(2,"SPD SI CHIP$",0.28086E+02,0.14000E+02,0.23300E+01,0.93600E+01,0.99900E+03);
    AliMedium(2,"SPD SI CHIP$",2,0,ifield,fieldm,tmaxfdSi,stemaxSi,deemaxSi,epsilSi,stminSi);

    AliMaterial(3,"SPD SI BUS$",0.28086E+02,0.14000E+02,0.23300E+01,0.93600E+01,0.99900E+03);
    AliMedium(3,"SPD SI BUS$",3,0,ifield,fieldm,tmaxfdSi,stemaxSi,deemaxSi,epsilSi,stminSi);

    AliMixture(4,"C (M55J)$",aCM55J,zCM55J,dCM55J,4,wCM55J);
    AliMedium(4,"C (M55J)$",4,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);

 
    AliMixture(6,"GEN AIR$",aAir,zAir,dAir,4,wAir);
    AliMedium(6,"GEN AIR$",6,0,ifield,fieldm,tmaxfdAir,stemaxAir,deemaxAir,epsilAir,stminAir);

    AliMixture(13,"Freon$",afre,zfre,densfre,-2,wfre);
    AliMedium(13,"Freon$",13,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);


    AliMixture(15,"CERAMICS$",acer,zcer,denscer,5,wcer);
    AliMedium(15,"CERAMICS$",15,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);

    AliMixture(20,"SSD C (M55J)$",aCM55J,zCM55J,dCM55J,4,wCM55J);
    AliMedium(20,"SSD C (M55J)$",20,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);

    AliMixture(21,"SSD AIR$",aAir,zAir,dAir,4,wAir);
    AliMedium(21,"SSD AIR$",21,0,ifield,fieldm,tmaxfdAir,stemaxAir,deemaxAir,epsilAir,stminAir);

    AliMixture(25,"G10FR4$",aG10FR4,zG10FR4,densG10FR4,14,wG10FR4);
    AliMedium(25,"G10FR4$",25,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);

     AliMixture(26,"GEN C (M55J)$",aCM55J,zCM55J,dCM55J,4,wCM55J);
    AliMedium(26,"GEN C (M55J)$",26,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);

    AliMixture(27,"GEN Air$",aAir,zAir,dAir,4,wAir);
    AliMedium(27,"GEN Air$",27,0,ifield,fieldm,tmaxfdAir,stemaxAir,deemaxAir,epsilAir,stminAir);

    AliMaterial(51,"SPD SI$",0.28086E+02,0.14000E+02,0.23300E+01,0.93600E+01,0.99900E+03);
    AliMedium(51,"SPD SI$",51,0,ifield,fieldm,tmaxfdSi,stemaxSi,deemaxSi,epsilSi,stminSi);

    AliMaterial(52,"SPD SI CHIP$",0.28086E+02,0.14000E+02,0.23300E+01,0.93600E+01,0.99900E+03);
    AliMedium(52,"SPD SI CHIP$",52,0,ifield,fieldm,tmaxfdSi,stemaxSi,deemaxSi,epsilSi,stminSi);

    AliMaterial(53,"SPD SI BUS$",0.28086E+02,0.14000E+02,0.23300E+01,0.93600E+01,0.99900E+03);
    AliMedium(53,"SPD SI BUS$",53,0,ifield,fieldm,tmaxfdSi,stemaxSi,deemaxSi,epsilSi,stminSi);

    AliMixture(54,"SPD C (M55J)$",aCM55J,zCM55J,dCM55J,4,wCM55J);
    AliMedium(54,"SPD C (M55J)$",54,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);

    AliMixture(55,"SPD AIR$",aAir,zAir,dAir,4,wAir);
    AliMedium(55,"SPD AIR$",55,0,ifield,fieldm,tmaxfdAir,stemaxAir,deemaxAir,epsilAir,stminAir);

    AliMixture(56, "SPD KAPTON(POLYCH2)", aKapton, zKapton, dKapton, 4, wKapton);
    AliMedium(56,"SPD KAPTON(POLYCH2)$",56,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);

    AliMixture(61,"EPOXY$",aEpoxy,zEpoxy,dEpoxy,-3,wEpoxy);
    AliMedium(61,"EPOXY$",61,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);

    AliMaterial(62,"SILICON$",0.28086E+02,0.14000E+02,0.23300E+01,0.93600E+01,0.99900E+03);
    AliMedium(62,"SILICON$",62,0,ifield,fieldm,tmaxfdSi,stemaxSi,deemaxSi,epsilSi,stminSi);

    AliMixture(63, "KAPTONH(POLYCH2)", aKapton, zKapton, dKapton, 4, wKapton);
    AliMedium(63,"KAPTONH(POLYCH2)$",63,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);


    AliMixture(65,"INOX$",aINOX,zINOX,dINOX,9,wINOX);
    AliMedium(65,"INOX$",65,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);

    AliMixture(68,"ROHACELL$",arohac,zrohac,drohac,-4,wrohac);
    AliMedium(68,"ROHACELL$",68,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);


     AliMaterial(71,"ITS SANDW A$",0.12011E+02,0.60000E+01,0.2115E+00,0.17479E+03,0.99900E+03);
    AliMedium(71,"ITS SANDW A$",71,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);

    AliMaterial(72,"ITS SANDW B$",0.12011E+02,0.60000E+01,0.27000E+00,0.18956E+03,0.99900E+03);
    AliMedium(72,"ITS SANDW B$",72,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);

    AliMaterial(73,"ITS SANDW C$",0.12011E+02,0.60000E+01,0.41000E+00,0.90868E+02,0.99900E+03);
    AliMedium(73,"ITS SANDW C$",73,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);

    AliMaterial(74,"HEAT COND GLUE$",0.12011E+02,0.60000E+01,0.1930E+01,0.22100E+02,0.99900E+03);
    AliMedium(74,"HEAT COND GLUE$",74,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);

    AliMaterial(75,"ELASTO SIL$",0.28086E+02,0.14000E+02,0.23300E+01,0.93600E+01,0.99900E+03);
    AliMedium(75,"ELASTO SIL$",75,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);

    AliMaterial(76,"SPDBUS(AL+KPT+EPOX)$",0.19509E+02,0.96502E+01,0.19060E+01,0.15413E+02,0.99900E+03);
    AliMedium(76,"SPDBUS(AL+KPT+EPOX)$",76,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);
               

    AliMixture(80,"SDD HV microcable$",aHVm,zHVm,dHVm,5,wHVm);
    AliMedium(80,"SDD HV microcable$",80,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);

    AliMixture(81,"SDD LV+signal cable$",aLVm,zLVm,dLVm,5,wLVm);
    AliMedium(81,"SDD LV+signal cable$",81,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);

    AliMixture(82,"SDD hybrid microcab$",aHLVm, zHLVm,dHLVm,5,wHLVm);
    AliMedium(82,"SDD hybrid microcab$",82,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);

    AliMixture(83,"SDD anode microcab$",aALVm,zALVm,dALVm,5,wALVm);
    AliMedium(83,"SDD anode microcab$",83,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);

    AliMaterial(84,"SDD/SSD rings$",0.123565E+02,0.64561E+01,0.18097E+01,0.229570E+02,0.99900E+03);
    AliMedium(84,"SDD/SSD rings$",84,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);

    AliMixture(85,"inox/alum$",aInAl,zInAl,dInAl,5,wInAl);
    AliMedium(85,"inox/alum$",85,0,ifield,fieldm,tmaxfd,stemax,deemax,epsil,stmin);


    // special media to take into account services in the SDD and SSD 
    // cones for the FMD

       Float_t aA[13],zZ[13],wW[13],den;
    // From Pierluigi Barberis calculations of 2SPD+1SDD October 2 2002.
    zZ[0] = 1.0; aA[0] = 1.00794; // Hydrogen
    zZ[1] = 6.0; aA[1] = 12.011; // Carbon
    zZ[2] = 7.0; aA[2] = 14.00674; // Nitrogen
    zZ[3] = 8.0; aA[3] = 15.9994; // Oxigen
    zZ[4] = 14.0; aA[4] = 28.0855; // Silicon
    zZ[5] = 24.0; aA[5] = 51.9961; //Cromium
    zZ[6] = 25.0; aA[6] = 54.938049; // Manganese
    zZ[7] = 26.0; aA[7] = 55.845; // Iron
    zZ[8] = 28.0; aA[8] = 58.6934; // Nickle
    zZ[9] = 29.0; aA[9] = 63.546; // Copper
    zZ[10] = 13.0; aA[10] = 26.981539; // Alulminum
    zZ[11] = 47.0; aA[11] = 107.8682; // Silver
    zZ[12] = 27.0; aA[12] = 58.9332; // Cobolt
    wW[0] = 0.019965;
    wW[1] = 0.340961;
    wW[2] = 0.041225;
    wW[3] = 0.200352;
    wW[4] = 0.000386;
    wW[5] = 0.001467;
    wW[6] = 0.000155;
    wW[7] = 0.005113;
    wW[8] = 0.000993;
    wW[9] = 0.381262;
    wW[10] = 0.008121;
    wW[11] = 0.000000;
    wW[12] = 0.000000;
    if(fByThick){// New values seeITS_MatBudget_4B.xls
	den = 1.5253276; // g/cm^3  Cell O370
    }else{
	den = 2.58423412; // g/cm^3 Cell L370
    } // end if fByThick
    //den = 6161.7/(3671.58978);//g/cm^3 Volume does not exclude holes
    AliMixture(86,"AIRFMDSDD$",aA,zZ,den,+11,wW);
    AliMedium(86,"AIRFMDSDD$",86,0,ifield,fieldm,tmaxfdAir,stemaxAir,
	      deemaxAir,epsilAir,stminAir);


    wW[0] = 0.019777;
    wW[1] = 0.325901;
    wW[2] = 0.031848;
    wW[3] = 0.147668;
    wW[4] = 0.030609;
    wW[5] = 0.013993;
    wW[6] = 0.001479;
    wW[7] = 0.048792;
    wW[8] = 0.009477;
    wW[9] = 0.350697;
    wW[10] = 0.014546;
    wW[11] = 0.005213;
    wW[12] = 0.000000;
    if(fByThick){// New values seeITS_MatBudget_4B.xls
	den = 1.2464275; // g/cm^3   Cell O403
    }else{
	den = 1.28134409; // g/cm^3  Cell L403
    } // end if fByThick
    //den = 7666.3/(9753.553259); // volume does not exclude holes
    AliMixture(87,"AIRFMDSSD$",aA,zZ,den,+12,wW); 
    AliMedium(87,"AIRFMDSSD$",87,0,ifield,fieldm,tmaxfdAir,stemaxAir,
	      deemaxAir,epsilAir,stminAir);

    wW[0] = 0.016302;
    wW[1] = 0.461870;
    wW[2] = 0.033662;
    wW[3] = 0.163595;
    wW[4] = 0.000315;
    wW[5] = 0.001197;
    wW[6] = 0.000127;
    wW[7] = 0.004175;
    wW[8] = 0.000811;
    wW[9] = 0.311315;
    wW[10] = 0.006631;
    wW[11] = 0.000000;
    wW[12] = 0.000000;
    if(fByThick){// New values seeITS_MatBudget_4B.xls
	den = 1.9353276; // g/cm^3  Cell N370
    }else{
	den = 3.2788626; // g/cm^3 Cell F370
    } // end if fByThick
    //den = 7667.1/(3671.58978); // Volume does not excludeholes
    AliMixture(88,"ITS SANDW CFMDSDD$",aA,zZ,den,+11,wW); 
    AliMedium(88,"ITS SANDW CFMDSDD$",88,0,ifield,fieldm,tmaxfd,stemax,
	      deemax,epsil,stmin);

    wW[0] = 0.014065;
    wW[1] = 0.520598;
    wW[2] = 0.022650;
    wW[3] = 0.105018;
    wW[4] = 0.021768;
    wW[5] = 0.009952;
    wW[6] = 0.001051;
    wW[7] = 0.034700;
    wW[8] = 0.006740;
    wW[9] = 0.249406;
    wW[10] = 0.010345;
    wW[11] = 0.0003707;
    wW[12] = 0.000000;
    if(fByThick){// New values seeITS_MatBudget_4B.xls
	den = 1.6564275; // g/cm^3  Cell N304
    }else{
	den = 1.7028296; // g/cm^3  Cell F304
    } // end if fByThick
    //den = 1166.5/(3671.58978); // Volume does not exclude holes
    AliMixture(89,"ITS SANDW CFMDSSD$",aA,zZ,den,+12,wW); 
    AliMedium(89,"ITS SANDW CFMDSSD$",89,0,ifield,fieldm,tmaxfd,stemax,
	      deemax,epsil,stmin);

    wW[0] = 0.005970;
    wW[1] = 0.304704;
    wW[2] = 0.042510;
    wW[3] = 0.121715;
    wW[4] = 0.001118;
    wW[5] = 0.030948;
    wW[6] = 0.003270;
    wW[7] = 0.107910;
    wW[8] = 0.020960;
    wW[9] = 0.360895;
    wW[10] = 0.000000;
    wW[11] = 0.000000;
    wW[12] = 0.000000;
    if(fByThick){// New values seeITS_MatBudget_4B.xls
	den = 80.31136576; // g/cm^3 Cell H329
    }else{
	den = 87.13062; // g/cm^3  Cell G329
    } // end if fByThick
    //den = 1251.3/(0.05*2.0*TMath::Pi()*(7.75*7.75 - 3.7*3.7)); // g/cm^3
    AliMixture(97,"SPD SERVICES$",aA,zZ,den,+10,wW); 
    AliMedium(97,"SPD SERVICES$",97,0,ifield,fieldm,tmaxfd,stemax,
	      deemax,epsil,stmin);

    // Special media

    AliMaterial(90,"SPD shield$", 12.011, 6., 1.93/10. , 22.1*10., 999);
    AliMedium(90,"SPD shield$",90,0,ifield,fieldm,tmaxfdServ,stemaxServ,
	      deemaxServ,epsilServ,stminServ);

    AliMaterial(91, "SPD End ladder$", 47.0447, 21.7963, 3.6374, 4.4711, 999); 
    AliMedium(91,"SPD End ladder$",91,0,ifield,fieldm,tmaxfdServ,stemaxServ,
	      deemaxServ,epsilServ,stminServ);

    AliMaterial(92, "SPD cone$",28.0855, 14., 2.33, 9.36, 999);    
    AliMedium(92,"SPD cone$",92,0,ifield,fieldm,tmaxfdServ,stemaxServ,
	      deemaxServ,epsilServ,stminServ);

//     Material with fractional Z not actually used
//     AliMaterial(93, "SDD End ladder$", 69.9298, 29.8246, 0.3824, 36.5103, 999);
//     AliMedium(93,"SDD End ladder$",93,0,ifield,fieldm,tmaxfdServ,stemaxServ,
//               deemaxServ,epsilServ,stminServ);

    AliMaterial(94, "SDD cone$",63.546, 29., 1.15, 1.265, 999);
    AliMedium(94,"SDD cone$",94,0,ifield,fieldm,tmaxfdServ,stemaxServ,
	      deemaxServ,epsilServ,stminServ);

//     Material with fractional Z not actually used
//     AliMaterial(95, "SSD End ladder$", 32.0988, 15.4021, 0.68, 35.3238, 999); 
//     AliMedium(95,"SSD End ladder$",95,0,ifield,fieldm,tmaxfdServ,stemaxServ,
//     deemaxServ,epsilServ,stminServ);

    AliMaterial(96, "SSD cone$",63.546, 29., 1.15, 1.265, 999);
    AliMedium(96,"SSD cone$",96,0,ifield,fieldm,tmaxfdServ,stemaxServ,
	      deemaxServ,epsilServ,stminServ);

}


//______________________________________________________________________
void AliITSv11::InitAliITSgeom(){
  //
  // Fill fITSgeom with the 3 sub-detector geometries
  //

  const Int_t knlayers = 6;
  Int_t nlad[knlayers],ndet[knlayers];
  nlad[0]= 0; ndet[0]=0;
  nlad[1]= 0; ndet[1]=0;
  nlad[2]= fSDDgeom->GetLay3NLadders(); ndet[2]=6;
  nlad[3]= fSDDgeom->GetLay4NLadders(); ndet[3]=8;
  nlad[4]= 0; ndet[4]=0;
  nlad[5]= 0; ndet[5]=0;
  Int_t nSPD = nlad[0]*ndet[0]+nlad[1]*ndet[1];
  Int_t nSDD = nlad[2]*ndet[2]+nlad[3]*ndet[3];
  Int_t nSSD = nlad[4]*ndet[4]+nlad[5]*ndet[5];
  Int_t nModTot = nSPD + nSDD + nSSD;
  if (fITSgeom) delete fITSgeom;
  fITSgeom = new AliITSgeom(0,knlayers,nlad,ndet,nModTot);


  //***************************************************
  //               Set default shapes 
  // (These default shapes won't exist anymore when all
  //  layers are coded)

  const Float_t kDxyzSPD[] = {0.6400, 0.015,   3.480};  
  if(!(fITSgeom->IsShapeDefined(kSPD)))
    fITSgeom->ReSetShape(kSPD,
			 new AliITSgeomSPD425Short(3,(Float_t *)kDxyzSPD));

  const Float_t kDxyzSSD[] = {3.6500, 0.0150,  2.000};
  if(!(fITSgeom->IsShapeDefined(kSSD)))
    fITSgeom->ReSetShape(kSSD,
			 new AliITSgeomSSD75and275(3,(Float_t *)kDxyzSSD));

  //*****************************************
  fSDDgeom->ExportSensorGeometry(fITSgeom, +3, 0);  //SDD

  return;
}


//______________________________________________________________________
void AliITSv11::Init(){
  //
  //     Initialise the ITS after it has been created.
  //

    Int_t i;
    for(i=0;i<20;i++) printf("*");
    printf( " ITSv%i.%i_Init ", fMajorVersion,fMinorVersion );
    for(i=0;i<20;i++) printf("*"); printf("\n");

    // Create geometry
    if(fRead[0]=='\0') strncpy(fRead,fEuclidGeomDet,60);
    if(fWrite[0]=='\0') strncpy(fWrite,fEuclidGeomDet,60);
    if(fITSgeom!=0) delete fITSgeom;
    fITSgeom = new AliITSgeom();
    if(fGeomDetIn) fITSgeom->ReadNewFile(fRead);
    else this->InitAliITSgeom();
    if(fGeomDetOut) fITSgeom->WriteNewFile(fWrite);

    // Initialize AliITS
    AliITS::Init();
    for(i=0;i<40+16;i++) printf("*"); printf("\n");
}


//______________________________________________________________________
void AliITSv11::SetDefaults(){
  //
  // Set response ans segmentation models for SPD, SDD and SSD
  //

  printf("AliITSv11::SetDefaults :\n");
  const Float_t kconv = 1.0e+04; // convert cm to microns

  AliITSDetType *iDetType;
  AliITSgeomSPD  *s0;
  AliITSgeomSDD  *s1;
  AliITSgeomSSD  *s2;
  Int_t i;
  Float_t bx[256],bz[280];

  //================================================ SPD
  iDetType=DetType(kSPD);
  s0 = (AliITSgeomSPD*) fITSgeom->GetShape(kSPD);// Get shape info. Do it this way for now.
  // If some SPD detectors have been inserted in t
  if (s0) {
    AliITSresponse *resp0=new AliITSresponseSPD();
    SetResponseModel(kSPD,resp0);
    AliITSsegmentationSPD *seg0=new AliITSsegmentationSPD(fITSgeom);
    seg0->SetDetSize(s0->GetDx()*2.*kconv, // base this on AliITSgeomSPD
		     s0->GetDz()*2.*kconv, // for now.
		     s0->GetDy()*2.*kconv); // x,z,y full width in microns.
    seg0->SetNPads(256,160);// Number of Bins in x and z
    for(i=000;i<256;i++) bx[i] =  50.0; // in x all are 50 microns.
    for(i=000;i<160;i++) bz[i] = 425.0; // most are 425 microns except below
    for(i=160;i<280;i++) bz[i] =   0.0; // Outside of detector.
    bz[ 31] = bz[ 32] = 625.0; // first chip boundry
    bz[ 63] = bz[ 64] = 625.0; // first chip boundry
    bz[ 95] = bz[ 96] = 625.0; // first chip boundry
    bz[127] = bz[128] = 625.0; // first chip boundry
    bz[160] = 425.0; // Set so that there is no zero pixel size for fNz.
    seg0->SetBinSize(bx,bz); // Based on AliITSgeomSPD for now.
    SetSegmentationModel(kSPD,seg0);
    // set digit and raw cluster classes to be used
    const char *kData0=(iDetType->GetResponseModel())->DataType();
    if (strstr(kData0,"real")) iDetType->ClassNames("AliITSdigit",
						    "AliITSRawClusterSPD");
    else iDetType->ClassNames("AliITSdigitSPD","AliITSRawClusterSPD");
  };
  
  //================================================ SDD
  iDetType=DetType(kSDD);
  s1 = (AliITSgeomSDD*) fITSgeom->GetShape(kSDD);
  if (s1) {
    AliITSresponseSDD     *resp1 = new AliITSresponseSDD("simulated");
    AliITSsegmentationSDD  *seg1 = new AliITSsegmentationSDD(fITSgeom,resp1);
    seg1->SetDetSize(s1->GetDx()*kconv,
		     s1->GetDz()*4*kconv,  // z in 2th and y in 3th position in
		     s1->GetDy()*4*kconv); // AliITSsegmentation::SetDetSize()...
    seg1->SetNPads(256, 256);
    SetResponseModel(kSDD, resp1);
    SetSegmentationModel(kSDD, seg1);
    const char *kData1 = (iDetType->GetResponseModel())->DataType();
    const char *kopt   = iDetType->GetResponseModel()->ZeroSuppOption();
    if((!strstr(kopt,"2D")) && (!strstr(kopt,"1D")) || strstr(kData1,"real") ){
      iDetType->ClassNames("AliITSdigit","AliITSRawClusterSDD");
    } else iDetType->ClassNames("AliITSdigitSDD","AliITSRawClusterSDD");
  };
  
  //================================================ SSD  Layer 5
  iDetType=DetType(kSSD);
  s2 = (AliITSgeomSSD*) fITSgeom->GetShape(kSSD);// Get shape info. Do it this way for now.
  if (s2) {
    AliITSresponse *resp2=new AliITSresponseSSD("simulated");
    SetResponseModel(kSSD,resp2);
    AliITSsegmentationSSD *seg2=new AliITSsegmentationSSD(fITSgeom);
    seg2->SetDetSize(s2->GetDx()*2.*kconv, // base this on AliITSgeomSSD
		     s2->GetDz()*2.*kconv, // for now.
		     s2->GetDy()*2.*kconv); // x,z,y full width in microns.
    seg2->SetPadSize(95.,0.); // strip x pitch in microns
    seg2->SetNPads(768,0); // number of strips on each side.
    seg2->SetAngles(0.0075,0.0275); // strip angels rad P and N side.
    seg2->SetAnglesLay5(0.0075,0.0275); // strip angels rad P and N side.
    seg2->SetAnglesLay6(0.0275,0.0075); // strip angels rad P and N side.
    SetSegmentationModel(kSSD,seg2); 
    const char *kData2=(iDetType->GetResponseModel())->DataType();
    if(strstr(kData2,"real") ) iDetType->ClassNames("AliITSdigit",
						    "AliITSRawClusterSSD");
    else iDetType->ClassNames("AliITSdigitSSD","AliITSRawClusterSSD");
  };
  
  if(kNTYPES>3){
    Warning("SetDefaults",
	    "Only the four basic detector types are initialised!");
  }// end if
  return;
};


//______________________________________________________________________
void AliITSv11::DrawModule() const{

}

//______________________________________________________________________
void AliITSv11::StepManager(){
  //
  //    Called for every step in the ITS, then calles the AliITShit class
  // creator with the information to be recoreded about that hit.
  //

  Int_t         copy, id;
  TLorentzVector position, momentum;
  static TLorentzVector position0;
  static Int_t stat0=0;
    
  if(!(this->IsActive())){
    return;
  } // end if !Active volume.

  if(!(gMC->TrackCharge())) return;
  
  id=gMC->CurrentVolID(copy);

  Bool_t sensvol = kFALSE;
  for(Int_t kk = 0; kk < fIdN; kk++)
    if(id == fIdSens[kk]) sensvol = kTRUE;

  if (sensvol && (gMC->IsTrackExiting())) {
    copy = fTrackReferences->GetEntriesFast();
    TClonesArray &lTR = *fTrackReferences;
    // Fill TrackReference structure with this new TrackReference.
    new(lTR[copy]) AliTrackReference(gAlice->GetMCApp()->GetCurrentTrackNumber());
  } // if Outer ITS mother Volume
  
  Int_t   vol[5];
  TClonesArray &lhits = *fHits;
  //
  // Track status
  vol[3] = 0;
  vol[4] = 0;
  // Fill hit structure.
  if(gMC->IsTrackInside())      vol[3] +=  1;
  if(gMC->IsTrackEntering())    vol[3] +=  2;
  if(gMC->IsTrackExiting())     vol[3] +=  4;
  if(gMC->IsTrackOut())         vol[3] +=  8;
  if(gMC->IsTrackDisappeared()) vol[3] += 16;
  if(gMC->IsTrackStop())        vol[3] += 32;
  if(gMC->IsTrackAlive())       vol[3] += 64;

  // Only entering charged tracks
  if(!(gMC->TrackCharge())) return;
 
  if((id = gMC->CurrentVolID(copy)) == fIdSens[0]) {
    fSDDgeom->GetCurrentLayLaddDet(vol[0], vol[2], vol[1]);
    // vol[2], vol[1]) : in this order because the ladder
    // index and the det. index are exchanged in the constructor
    // of AliITShit ...                     ???

  } else {
    return; // not an ITS volume?
  };

  gMC->TrackPosition(position);
  gMC->TrackMomentum(momentum);
  vol[4] = stat0;
  if(gMC->IsTrackEntering()){
    position0 = position;
    stat0 = vol[3];
    return;
  } // end if IsEntering
    // Fill hit structure with this new hit.
  new(lhits[fNhits++]) AliITShit(fIshunt,gAlice->GetMCApp()->GetCurrentTrackNumber(),
				 vol, gMC->Edep(),gMC->TrackTime(),position,
				 position0,momentum);
  //
  position0 = position;
  stat0 = vol[3];
 
  return;
};