[u/mrichter/AliRoot.git] / PHOS / AliPHOS.cxx

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

/* $Id$ */

//_________________________________________________________________________
// Base Class for PHOS description:
//   PHOS consists of a PbWO4 calorimeter (EMCA) and a gazeous charged 
//    particles detector (CPV or PPSD).
//   The only provided method here is CreateMaterials, 
//    which defines the materials common to all PHOS versions.   
// 
//*-- Author: Laurent Aphecetche & Yves Schutz (SUBATECH) 
//////////////////////////////////////////////////////////////////////////////

// --- ROOT system ---

// --- Standard library ---

// --- AliRoot header files ---

#include "AliPHOS.h"
#include "AliMC.h"
#include "AliRun.h"

ClassImp(AliPHOS)

//____________________________________________________________________________
AliPHOS::~AliPHOS()
{
  delete fHits ;
  delete fDigits ;
}

//____________________________________________________________________________
void AliPHOS::CreateMaterials()
{
  // Definitions of materials to build PHOS and associated tracking media.
  // media number in idtmed are 699 to 798.

  // --- The PbWO4 crystals ---
  Float_t aX[3] = {207.19, 183.85, 16.0} ;
  Float_t zX[3] = {82.0, 74.0, 8.0} ;
  Float_t wX[3] = {1.0, 1.0, 4.0} ;
  Float_t dX = 8.28 ;

  AliMixture(0, "PbWO4$", aX, zX, dX, -3, wX) ;


  // --- The polysterene scintillator (CH) ---
  Float_t aP[2] = {12.011, 1.00794} ;
  Float_t zP[2] = {6.0, 1.0} ;
  Float_t wP[2] = {1.0, 1.0} ;
  Float_t dP = 1.032 ;

  AliMixture(1, "Polystyrene$", aP, zP, dP, -2, wP) ;

  // --- Aluminium ---
  AliMaterial(2, "Al$", 26.98, 13., 2.7, 8.9, 999., 0, 0) ;
  // ---         Absorption length is ignored ^

 // --- Tyvek (CnH2n) ---
  Float_t aT[2] = {12.011, 1.00794} ;
  Float_t zT[2] = {6.0, 1.0} ;
  Float_t wT[2] = {1.0, 2.0} ;
  Float_t dT = 0.331 ;

  AliMixture(3, "Tyvek$", aT, zT, dT, -2, wT) ;

  // --- Polystyrene foam ---
  Float_t aF[2] = {12.011, 1.00794} ;
  Float_t zF[2] = {6.0, 1.0} ;
  Float_t wF[2] = {1.0, 1.0} ;
  Float_t dF = 0.12 ;

  AliMixture(4, "Foam$", aF, zF, dF, -2, wF) ;

 // --- Titanium ---
  Float_t aTIT[3] = {47.88, 26.98, 54.94} ;
  Float_t zTIT[3] = {22.0, 13.0, 25.0} ;
  Float_t wTIT[3] = {69.0, 6.0, 1.0} ;
  Float_t dTIT = 4.5 ;

  AliMixture(5, "Titanium$", aTIT, zTIT, dTIT, -3, wTIT);

 // --- Silicon ---
  AliMaterial(6, "Si$", 28.0855, 14., 2.33, 9.36, 42.3, 0, 0) ;


  // --- Foam thermo insulation ---
  Float_t aTI[2] = {12.011, 1.00794} ;
  Float_t zTI[2] = {6.0, 1.0} ;
  Float_t wTI[2] = {1.0, 1.0} ;
  Float_t dTI = 0.1 ;

  AliMixture(7, "Thermo Insul.$", aTI, zTI, dTI, -2, wTI) ;

  // --- Textolitn ---
  Float_t aTX[4] = {16.0, 28.09, 12.011, 1.00794} ;
  Float_t zTX[4] = {8.0, 14.0, 6.0, 1.0} ;
  Float_t wTX[4] = {292.0, 68.0, 462.0, 736.0} ;
  Float_t dTX    = 1.75 ;

  AliMixture(8, "Textolit$", aTX, zTX, dTX, -4, wTX) ;

  //--- FR4  ---
  Float_t aFR[3] = {28.0855, 15.9994, 17.749} ; 
  Float_t zFR[3] = {14., 8., 8.875} ; 
  Float_t wFR[3] = {.28, .32, .4} ;
  Float_t dFR = 1.8 ; 

  AliMixture(9, "FR4$", aFR, zFR, dFR, -3, wFR) ;

  // --- The Composite Material for  micromegas (so far polyetylene) ---                                       
  Float_t aCM[2] = {12.01, 1.} ; 
  Float_t zCM[2] = {6., 1.} ; 
  Float_t wCM[2] = {1., 2.} ; 
  Float_t dCM = 0.935 ; 

  AliMixture(10, "Compo Mat$", aCM, zCM, dCM, -2, wCM) ;

  // --- Copper ---                                                                    
  AliMaterial(11, "Cu$", 63.546, 29, 8.96, 1.43, 14.8, 0, 0) ;
 
  // --- G10 : Printed Circuit material ---                                                  
  Float_t aG10[4] = { 12., 1., 16., 28.} ;
  Float_t zG10[4] = { 6., 1., 8., 14.} ;
  Float_t wG10[4] = { .259, .288, .248, .205} ;
  Float_t dG10  = 1.7 ;
  
  AliMixture(12, "G10$", aG10, zG10, dG10, -4, wG10);

  // --- Lead ---                                                                     
  AliMaterial(13, "Pb$", 207.2, 82, 11.35, 0.56, 0., 0, 0) ;

 // --- The gas mixture ---                                                                
 // Co2
  Float_t aCO[2] = {12.0, 16.0} ; 
  Float_t zCO[2] = {6.0, 8.0} ; 
  Float_t wCO[2] = {1.0, 2.0} ; 
  Float_t dCO = 0.001977 ; 

  AliMixture(14, "CO2$", aCO, zCO, dCO, -2, wCO);

 // Ar
  Float_t dAr = 0.001782 ; 
  AliMaterial(15, "Ar$", 39.948, 18.0, dAr, 14.0, 0., 0, 0) ;   
 
 // ArCo2
  Char_t namate[21];
  Float_t aGM[2] ; 
  Float_t zGM[2] ; 
  Float_t wGM[2] ; 
  Float_t dGM ; 

  Float_t absL, radL, density ;
  Float_t buf[1] ;
  Int_t nbuf ;

  gMC->Gfmate((*fIdmate)[15], namate, aGM[0], zGM[0], density, radL, absL, buf, nbuf) ; // Get properties of Ar 
  gMC->Gfmate((*fIdmate)[14], namate, aGM[1], zGM[1], density, radL, absL, buf, nbuf) ; // Get properties of CO2 


  // Create gas mixture 

  Float_t arContent    = 0.80 ;  // Ar-content of the Ar/CO2-mixture (80% / 20%) 
 
  wGM[0] = arContent;
  wGM[1] = 1. - arContent ;
  dGM    = wGM[0] * dAr + wGM[1] * dCO;

  AliMixture(16, "ArCO2$", aGM, zGM, dGM,  2, wGM) ;

 
  // --- Air ---
  AliMaterial(99, "Air$", 14.61, 7.3, 0.001205, 30420., 67500., 0, 0) ;
  
 
  // DEFINITION OF THE TRACKING MEDIA

  // for PHOS: idtmed[699->798] equivalent to fIdtmed[0->100]
  Int_t * idtmed = fIdtmed->GetArray() - 699 ; 
  Int_t   isxfld = gAlice->Field()->Integ() ;
  Float_t sxmgmx = gAlice->Field()->Max() ;

  // The scintillator of the calorimeter made of PBW04                              -> idtmed[699]
  AliMedium(0, "PHOS Xtal    $", 0, 1,
	    isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;

  // The scintillator of the CPV made of Polystyrene scintillator                   -> idtmed[700]
  AliMedium(1, "CPV scint.   $", 1, 1,
	    isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;

  // Various Aluminium parts made of Al                                             -> idtmed[701]
  AliMedium(2, "Al parts     $", 2, 0,
	     isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.001, 0.001, 0, 0) ;

  // The Tywek which wraps the calorimeter crystals                                 -> idtmed[702]
  AliMedium(3, "Tyvek wrapper$", 3, 0,
	     isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.001, 0.001, 0, 0) ;

  // The Polystyrene foam around the calorimeter module                             -> idtmed[703]
  AliMedium(4, "Polyst. foam $", 4, 0,
	     isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;

  // The Titanium around the calorimeter crystal                                    -> idtmed[704]
  AliMedium(5, "Titan. cover $", 5, 0,
	     isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.0001, 0.0001, 0, 0) ;

  // The Silicon of the pin diode to read out the calorimeter crystal               -> idtmed[705] 
 AliMedium(6, "Si PIN       $", 6, 0,
	     isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.01, 0.01, 0, 0) ;

 // The thermo insulating material of the box which contains the calorimeter module -> idtmed[706]
  AliMedium(7, "Thermo Insul.$", 7, 0,
	     isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;

  // The Textolit which makes up the box which contains the calorimeter module      -> idtmed[707]
  AliMedium(8, "Textolit     $", 8, 0,
	     isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;

  // FR4: The Plastic which makes up the frame of micromegas                        -> idtmed[708]
  AliMedium(9, "FR4 $", 9, 0,
	     isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.0001, 0, 0) ; 


  // The Composite Material for  micromegas                                         -> idtmed[709]
  AliMedium(10, "CompoMat   $", 10, 0,
	     isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;

  // Copper                                                                         -> idtmed[710]
  AliMedium(11, "Copper     $", 11, 0,
	     isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.0001, 0, 0) ;

  // G10: Printed Circuit material                                                  -> idtmed[711]
 
  AliMedium(12, "G10        $", 12, 0,
	     isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.01, 0, 0) ;

  // The Lead                                                                       -> idtmed[712]
 
  AliMedium(13, "Lead      $", 13, 0,
	     isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;

  // The gas mixture: ArCo2                                                         -> idtmed[715]
 
  AliMedium(16, "ArCo2      $", 16, 1,
	     isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.01, 0, 0) ;
 
  // Air                                                                            -> idtmed[798] 
  AliMedium(99, "Air          $", 99, 0,
	     isxfld, sxmgmx, 10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;

  // --- Set decent energy thresholds for gamma and electron tracking

  // Tracking threshold for photons and electrons in the scintillator crystal 
  gMC->Gstpar(idtmed[699], "CUTGAM",0.5E-4) ; 
  gMC->Gstpar(idtmed[699], "CUTELE",1.0E-4) ;
 
  // --- Generate explicitly delta rays in the titan cover ---
  gMC->Gstpar(idtmed[704], "LOSS",3.) ;
  gMC->Gstpar(idtmed[704], "DRAY",1.) ;
  // --- and in aluminium parts ---
  gMC->Gstpar(idtmed[701], "LOSS",3.) ;
  gMC->Gstpar(idtmed[701], "DRAY",1.) ;
  // --- and in PIN diode
  gMC->Gstpar(idtmed[705], "LOSS",3) ;
  gMC->Gstpar(idtmed[705], "DRAY",1) ;
  // --- and in the passive convertor
  gMC->Gstpar(idtmed[712], "LOSS",3) ;
  gMC->Gstpar(idtmed[712], "DRAY",1) ;
  // Tracking threshold for photons and electrons in the gas ArC02 
  gMC->Gstpar(idtmed[715], "CUTGAM",1.E-5) ; 
  gMC->Gstpar(idtmed[715], "CUTELE",1.E-5) ;
  gMC->Gstpar(idtmed[715], "CUTNEU",1.E-5) ;
  gMC->Gstpar(idtmed[715], "CUTHAD",1.E-5) ;
  gMC->Gstpar(idtmed[715], "CUTMUO",1.E-5) ;
  gMC->Gstpar(idtmed[715], "BCUTE",1.E-5) ;
  gMC->Gstpar(idtmed[715], "BCUTM",1.E-5) ;
  gMC->Gstpar(idtmed[715], "DCUTE",1.E-5) ;
  gMC->Gstpar(idtmed[715], "DCUTM",1.E-5) ;
  gMC->Gstpar(idtmed[715], "PPCUTM",1.E-5) ;
  gMC->Gstpar(idtmed[715], "LOSS",2.) ;
  gMC->Gstpar(idtmed[715], "DRAY",0.) ;
  gMC->Gstpar(idtmed[715], "STRA",2.) ;

}

//____________________________________________________________________________
RecPointsList * AliPHOS::EmcRecPoints(Int_t evt) 
{
  // returns the pointer to the EMCA RecPoints list
  // if the list is empty, get it from TreeR on the disk file

  RecPointsList * rv = 0 ; 
  
  if ( fEmcRecPoints ) 
    rv = fEmcRecPoints ; 

  else {
    fEmcRecPoints = new TClonesArray("AliPHOSEmcRecPoint", 100) ; 
    gAlice->GetEvent(evt) ; 
    TTree * fReconstruct = gAlice->TreeR() ; 
    fReconstruct->SetBranchAddress( "PHOSEmcRP", &fEmcRecPoints) ;
    fReconstruct->GetEvent(0) ;
    fEmcRecPoints->Expand( fEmcRecPoints->GetEntries() ) ; 
    rv =  fEmcRecPoints ;
  }
    
  return rv ; 
  
}

//____________________________________________________________________________
RecParticlesList * AliPHOS::RecParticles(Int_t evt) 
{
  // returns the pointer to the RecParticles list
  // if the list is empty, get it from TreeR on the disk file

  RecParticlesList * rv = 0 ; 
  
  if ( fRecParticles ) 
    rv = fRecParticles ; 

  else {
    fRecParticles = new TClonesArray("AliPHOSRecParticle", 100) ; 
    gAlice->GetEvent(evt) ; 
    TTree * fReconstruct = gAlice->TreeR() ; 
    fReconstruct->SetBranchAddress( "PHOSRP", &fRecParticles) ;
    fReconstruct->GetEvent(0) ;
    fRecParticles->Expand( fRecParticles->GetEntries() ) ; 
    rv =  fRecParticles ;
  }
 
  return rv ; 
  
}

//____________________________________________________________________________
RecParticlesList * AliPHOS::TrackSegments(Int_t evt) 
{
  // returns the pointer to the TrackSegments list
  // if the list is empty, get it from TreeR on the disk file

  TrackSegmentsList * rv = 0 ; 
  
  if ( fTrackSegments ) 
    rv = fTrackSegments ; 

  else {
    fTrackSegments = new TClonesArray("AliPHOSTrackSegment", 100) ; 
    gAlice->GetEvent(evt) ; 
    TTree * fReconstruct = gAlice->TreeR() ; 
    fReconstruct->SetBranchAddress( "PHOSTS", &fTrackSegments) ;
    fReconstruct->GetEvent(0) ;
    fTrackSegments->Expand( fTrackSegments->GetEntries() ) ; 
    rv =  fTrackSegments ;
  }
 
  return rv ; 
  
}
Commit	Line	Data
	1	/**************************************************************************
	2	* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
	3	* *
	4	* Author: The ALICE Off-line Project. *
	5	* Contributors are mentioned in the code where appropriate. *
	6	* *
	7	* Permission to use, copy, modify and distribute this software and its *
	8	* documentation strictly for non-commercial purposes is hereby granted *
	9	* without fee, provided that the above copyright notice appears in all *
	10	* copies and that both the copyright notice and this permission notice *
	11	* appear in the supporting documentation. The authors make no claims *
	12	* about the suitability of this software for any purpose. It is *
	13	* provided "as is" without express or implied warranty. *
	14	**************************************************************************/
	15
	16	/* $Id$ */
	17
	18	//_________________________________________________________________________
	19	// Base Class for PHOS description:
	20	// PHOS consists of a PbWO4 calorimeter (EMCA) and a gazeous charged
	21	// particles detector (CPV or PPSD).
	22	// The only provided method here is CreateMaterials,
	23	// which defines the materials common to all PHOS versions.
	24	//
	25	//*-- Author: Laurent Aphecetche & Yves Schutz (SUBATECH)
	26	//////////////////////////////////////////////////////////////////////////////
	27
	28	// --- ROOT system ---
	29
	30	// --- Standard library ---
	31
	32	// --- AliRoot header files ---
	33
	34	#include "AliPHOS.h"
	35	#include "AliMC.h"
	36	#include "AliRun.h"
	37
	38	ClassImp(AliPHOS)
	39
	40	//____________________________________________________________________________
	41	AliPHOS::~AliPHOS()
	42	{
	43	delete fHits ;
	44	delete fDigits ;
	45	}
	46
	47	//____________________________________________________________________________
	48	void AliPHOS::CreateMaterials()
	49	{
	50	// Definitions of materials to build PHOS and associated tracking media.
	51	// media number in idtmed are 699 to 798.
	52
	53	// --- The PbWO4 crystals ---
	54	Float_t aX[3] = {207.19, 183.85, 16.0} ;
	55	Float_t zX[3] = {82.0, 74.0, 8.0} ;
	56	Float_t wX[3] = {1.0, 1.0, 4.0} ;
	57	Float_t dX = 8.28 ;
	58
	59	AliMixture(0, "PbWO4$", aX, zX, dX, -3, wX) ;
	60
	61
	62	// --- The polysterene scintillator (CH) ---
	63	Float_t aP[2] = {12.011, 1.00794} ;
	64	Float_t zP[2] = {6.0, 1.0} ;
	65	Float_t wP[2] = {1.0, 1.0} ;
	66	Float_t dP = 1.032 ;
	67
	68	AliMixture(1, "Polystyrene$", aP, zP, dP, -2, wP) ;
	69
	70	// --- Aluminium ---
	71	AliMaterial(2, "Al$", 26.98, 13., 2.7, 8.9, 999., 0, 0) ;
	72	// --- Absorption length is ignored ^
	73
	74	// --- Tyvek (CnH2n) ---
	75	Float_t aT[2] = {12.011, 1.00794} ;
	76	Float_t zT[2] = {6.0, 1.0} ;
	77	Float_t wT[2] = {1.0, 2.0} ;
	78	Float_t dT = 0.331 ;
	79
	80	AliMixture(3, "Tyvek$", aT, zT, dT, -2, wT) ;
	81
	82	// --- Polystyrene foam ---
	83	Float_t aF[2] = {12.011, 1.00794} ;
	84	Float_t zF[2] = {6.0, 1.0} ;
	85	Float_t wF[2] = {1.0, 1.0} ;
	86	Float_t dF = 0.12 ;
	87
	88	AliMixture(4, "Foam$", aF, zF, dF, -2, wF) ;
	89
	90	// --- Titanium ---
	91	Float_t aTIT[3] = {47.88, 26.98, 54.94} ;
	92	Float_t zTIT[3] = {22.0, 13.0, 25.0} ;
	93	Float_t wTIT[3] = {69.0, 6.0, 1.0} ;
	94	Float_t dTIT = 4.5 ;
	95
	96	AliMixture(5, "Titanium$", aTIT, zTIT, dTIT, -3, wTIT);
	97
	98	// --- Silicon ---
	99	AliMaterial(6, "Si$", 28.0855, 14., 2.33, 9.36, 42.3, 0, 0) ;
	100
	101
	102
	103	// --- Foam thermo insulation ---
	104	Float_t aTI[2] = {12.011, 1.00794} ;
	105	Float_t zTI[2] = {6.0, 1.0} ;
	106	Float_t wTI[2] = {1.0, 1.0} ;
	107	Float_t dTI = 0.1 ;
	108
	109	AliMixture(7, "Thermo Insul.$", aTI, zTI, dTI, -2, wTI) ;
	110
	111	// --- Textolitn ---
	112	Float_t aTX[4] = {16.0, 28.09, 12.011, 1.00794} ;
	113	Float_t zTX[4] = {8.0, 14.0, 6.0, 1.0} ;
	114	Float_t wTX[4] = {292.0, 68.0, 462.0, 736.0} ;
	115	Float_t dTX = 1.75 ;
	116
	117	AliMixture(8, "Textolit$", aTX, zTX, dTX, -4, wTX) ;
	118
	119	//--- FR4 ---
	120	Float_t aFR[3] = {28.0855, 15.9994, 17.749} ;
	121	Float_t zFR[3] = {14., 8., 8.875} ;
	122	Float_t wFR[3] = {.28, .32, .4} ;
	123	Float_t dFR = 1.8 ;
	124
	125	AliMixture(9, "FR4$", aFR, zFR, dFR, -3, wFR) ;
	126
	127	// --- The Composite Material for micromegas (so far polyetylene) ---
	128	Float_t aCM[2] = {12.01, 1.} ;
	129	Float_t zCM[2] = {6., 1.} ;
	130	Float_t wCM[2] = {1., 2.} ;
	131	Float_t dCM = 0.935 ;
	132
	133	AliMixture(10, "Compo Mat$", aCM, zCM, dCM, -2, wCM) ;
	134
	135	// --- Copper ---
	136	AliMaterial(11, "Cu$", 63.546, 29, 8.96, 1.43, 14.8, 0, 0) ;
	137
	138	// --- G10 : Printed Circuit material ---
	139	Float_t aG10[4] = { 12., 1., 16., 28.} ;
	140	Float_t zG10[4] = { 6., 1., 8., 14.} ;
	141	Float_t wG10[4] = { .259, .288, .248, .205} ;
	142	Float_t dG10 = 1.7 ;
	143
	144	AliMixture(12, "G10$", aG10, zG10, dG10, -4, wG10);
	145
	146	// --- Lead ---
	147	AliMaterial(13, "Pb$", 207.2, 82, 11.35, 0.56, 0., 0, 0) ;
	148
	149	// --- The gas mixture ---
	150	// Co2
	151	Float_t aCO[2] = {12.0, 16.0} ;
	152	Float_t zCO[2] = {6.0, 8.0} ;
	153	Float_t wCO[2] = {1.0, 2.0} ;
	154	Float_t dCO = 0.001977 ;
	155
	156	AliMixture(14, "CO2$", aCO, zCO, dCO, -2, wCO);
	157
	158	// Ar
	159	Float_t dAr = 0.001782 ;
	160	AliMaterial(15, "Ar$", 39.948, 18.0, dAr, 14.0, 0., 0, 0) ;
	161
	162	// ArCo2
	163	Char_t namate[21];
	164	Float_t aGM[2] ;
	165	Float_t zGM[2] ;
	166	Float_t wGM[2] ;
	167	Float_t dGM ;
	168
	169	Float_t absL, radL, density ;
	170	Float_t buf[1] ;
	171	Int_t nbuf ;
	172
	173	gMC->Gfmate((*fIdmate)[15], namate, aGM[0], zGM[0], density, radL, absL, buf, nbuf) ; // Get properties of Ar
	174	gMC->Gfmate((*fIdmate)[14], namate, aGM[1], zGM[1], density, radL, absL, buf, nbuf) ; // Get properties of CO2
	175
	176
	177	// Create gas mixture
	178
	179	Float_t arContent = 0.80 ; // Ar-content of the Ar/CO2-mixture (80% / 20%)
	180
	181	wGM[0] = arContent;
	182	wGM[1] = 1. - arContent ;
	183	dGM = wGM[0] * dAr + wGM[1] * dCO;
	184
	185	AliMixture(16, "ArCO2$", aGM, zGM, dGM, 2, wGM) ;
	186
	187
	188	// --- Air ---
	189	AliMaterial(99, "Air$", 14.61, 7.3, 0.001205, 30420., 67500., 0, 0) ;
	190
	191
	192	// DEFINITION OF THE TRACKING MEDIA
	193
	194	// for PHOS: idtmed[699->798] equivalent to fIdtmed[0->100]
	195	Int_t * idtmed = fIdtmed->GetArray() - 699 ;
	196	Int_t isxfld = gAlice->Field()->Integ() ;
	197	Float_t sxmgmx = gAlice->Field()->Max() ;
	198
	199	// The scintillator of the calorimeter made of PBW04 -> idtmed[699]
	200	AliMedium(0, "PHOS Xtal $", 0, 1,
	201	isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
	202
	203	// The scintillator of the CPV made of Polystyrene scintillator -> idtmed[700]
	204	AliMedium(1, "CPV scint. $", 1, 1,
	205	isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
	206
	207	// Various Aluminium parts made of Al -> idtmed[701]
	208	AliMedium(2, "Al parts $", 2, 0,
	209	isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.001, 0.001, 0, 0) ;
	210
	211	// The Tywek which wraps the calorimeter crystals -> idtmed[702]
	212	AliMedium(3, "Tyvek wrapper$", 3, 0,
	213	isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.001, 0.001, 0, 0) ;
	214
	215	// The Polystyrene foam around the calorimeter module -> idtmed[703]
	216	AliMedium(4, "Polyst. foam $", 4, 0,
	217	isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
	218
	219	// The Titanium around the calorimeter crystal -> idtmed[704]
	220	AliMedium(5, "Titan. cover $", 5, 0,
	221	isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.0001, 0.0001, 0, 0) ;
	222
	223	// The Silicon of the pin diode to read out the calorimeter crystal -> idtmed[705]
	224	AliMedium(6, "Si PIN $", 6, 0,
	225	isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.01, 0.01, 0, 0) ;
	226
	227	// The thermo insulating material of the box which contains the calorimeter module -> idtmed[706]
	228	AliMedium(7, "Thermo Insul.$", 7, 0,
	229	isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
	230
	231	// The Textolit which makes up the box which contains the calorimeter module -> idtmed[707]
	232	AliMedium(8, "Textolit $", 8, 0,
	233	isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
	234
	235	// FR4: The Plastic which makes up the frame of micromegas -> idtmed[708]
	236	AliMedium(9, "FR4 $", 9, 0,
	237	isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.0001, 0, 0) ;
	238
	239
	240	// The Composite Material for micromegas -> idtmed[709]
	241	AliMedium(10, "CompoMat $", 10, 0,
	242	isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
	243
	244	// Copper -> idtmed[710]
	245	AliMedium(11, "Copper $", 11, 0,
	246	isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.0001, 0, 0) ;
	247
	248	// G10: Printed Circuit material -> idtmed[711]
	249
	250	AliMedium(12, "G10 $", 12, 0,
	251	isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.01, 0, 0) ;
	252
	253	// The Lead -> idtmed[712]
	254
	255	AliMedium(13, "Lead $", 13, 0,
	256	isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
	257
	258	// The gas mixture: ArCo2 -> idtmed[715]
	259
	260	AliMedium(16, "ArCo2 $", 16, 1,
	261	isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.01, 0, 0) ;
	262
	263	// Air -> idtmed[798]
	264	AliMedium(99, "Air $", 99, 0,
	265	isxfld, sxmgmx, 10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
	266
	267	// --- Set decent energy thresholds for gamma and electron tracking
	268
	269	// Tracking threshold for photons and electrons in the scintillator crystal
	270	gMC->Gstpar(idtmed[699], "CUTGAM",0.5E-4) ;
	271	gMC->Gstpar(idtmed[699], "CUTELE",1.0E-4) ;
	272
	273	// --- Generate explicitly delta rays in the titan cover ---
	274	gMC->Gstpar(idtmed[704], "LOSS",3.) ;
	275	gMC->Gstpar(idtmed[704], "DRAY",1.) ;
	276	// --- and in aluminium parts ---
	277	gMC->Gstpar(idtmed[701], "LOSS",3.) ;
	278	gMC->Gstpar(idtmed[701], "DRAY",1.) ;
	279	// --- and in PIN diode
	280	gMC->Gstpar(idtmed[705], "LOSS",3) ;
	281	gMC->Gstpar(idtmed[705], "DRAY",1) ;
	282	// --- and in the passive convertor
	283	gMC->Gstpar(idtmed[712], "LOSS",3) ;
	284	gMC->Gstpar(idtmed[712], "DRAY",1) ;
	285	// Tracking threshold for photons and electrons in the gas ArC02
	286	gMC->Gstpar(idtmed[715], "CUTGAM",1.E-5) ;
	287	gMC->Gstpar(idtmed[715], "CUTELE",1.E-5) ;
	288	gMC->Gstpar(idtmed[715], "CUTNEU",1.E-5) ;
	289	gMC->Gstpar(idtmed[715], "CUTHAD",1.E-5) ;
	290	gMC->Gstpar(idtmed[715], "CUTMUO",1.E-5) ;
	291	gMC->Gstpar(idtmed[715], "BCUTE",1.E-5) ;
	292	gMC->Gstpar(idtmed[715], "BCUTM",1.E-5) ;
	293	gMC->Gstpar(idtmed[715], "DCUTE",1.E-5) ;
	294	gMC->Gstpar(idtmed[715], "DCUTM",1.E-5) ;
	295	gMC->Gstpar(idtmed[715], "PPCUTM",1.E-5) ;
	296	gMC->Gstpar(idtmed[715], "LOSS",2.) ;
	297	gMC->Gstpar(idtmed[715], "DRAY",0.) ;
	298	gMC->Gstpar(idtmed[715], "STRA",2.) ;
	299
	300	}
	301
	302	//____________________________________________________________________________
	303	RecPointsList * AliPHOS::EmcRecPoints(Int_t evt)
	304	{
	305	// returns the pointer to the EMCA RecPoints list
	306	// if the list is empty, get it from TreeR on the disk file
	307
	308	RecPointsList * rv = 0 ;
	309
	310	if ( fEmcRecPoints )
	311	rv = fEmcRecPoints ;
	312
	313	else {
	314	fEmcRecPoints = new TClonesArray("AliPHOSEmcRecPoint", 100) ;
	315	gAlice->GetEvent(evt) ;
	316	TTree * fReconstruct = gAlice->TreeR() ;
	317	fReconstruct->SetBranchAddress( "PHOSEmcRP", &fEmcRecPoints) ;
	318	fReconstruct->GetEvent(0) ;
	319	fEmcRecPoints->Expand( fEmcRecPoints->GetEntries() ) ;
	320	rv = fEmcRecPoints ;
	321	}
	322
	323	return rv ;
	324
	325	}
	326
	327	//____________________________________________________________________________
	328	RecParticlesList * AliPHOS::RecParticles(Int_t evt)
	329	{
	330	// returns the pointer to the RecParticles list
	331	// if the list is empty, get it from TreeR on the disk file
	332
	333	RecParticlesList * rv = 0 ;
	334
	335	if ( fRecParticles )
	336	rv = fRecParticles ;
	337
	338	else {
	339	fRecParticles = new TClonesArray("AliPHOSRecParticle", 100) ;
	340	gAlice->GetEvent(evt) ;
	341	TTree * fReconstruct = gAlice->TreeR() ;
	342	fReconstruct->SetBranchAddress( "PHOSRP", &fRecParticles) ;
	343	fReconstruct->GetEvent(0) ;
	344	fRecParticles->Expand( fRecParticles->GetEntries() ) ;
	345	rv = fRecParticles ;
	346	}
	347
	348	return rv ;
	349
	350	}
	351
	352	//____________________________________________________________________________
	353	RecParticlesList * AliPHOS::TrackSegments(Int_t evt)
	354	{
	355	// returns the pointer to the TrackSegments list
	356	// if the list is empty, get it from TreeR on the disk file
	357
	358	TrackSegmentsList * rv = 0 ;
	359
	360	if ( fTrackSegments )
	361	rv = fTrackSegments ;
	362
	363	else {
	364	fTrackSegments = new TClonesArray("AliPHOSTrackSegment", 100) ;
	365	gAlice->GetEvent(evt) ;
	366	TTree * fReconstruct = gAlice->TreeR() ;
	367	fReconstruct->SetBranchAddress( "PHOSTS", &fTrackSegments) ;
	368	fReconstruct->GetEvent(0) ;
	369	fTrackSegments->Expand( fTrackSegments->GetEntries() ) ;
	370	rv = fTrackSegments ;
	371	}
	372
	373	return rv ;
	374
	375	}