[u/mrichter/AliRoot.git] / PHOS / AliPHOSGeometry.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.                  *
 **************************************************************************/

//_________________________________________________________________________
// Geometry class for PHOS version SUBATECH
//*-- Author : Y. Schutz SUBATECH 
//////////////////////////////////////////////////////////////////////////////

// --- ROOT system ---

#include "TVector3.h"
#include "TRotation.h" 

// --- Standard library ---

#include <iostream.h>
#include "assert.h"

// --- AliRoot header files ---

#include "AliPHOSGeometry.h"
#include "AliPHOSPpsdRecPoint.h"
#include "AliConst.h"

ClassImp(AliPHOSGeometry)

  AliPHOSGeometry * AliPHOSGeometry::fGeom = 0 ;

//____________________________________________________________________________
AliPHOSGeometry::~AliPHOSGeometry(void)
{
  fRotMatrixArray->Delete() ; 
  delete fRotMatrixArray ; 
}

//____________________________________________________________________________
Bool_t AliPHOSGeometry::AbsToRelNumbering(const Int_t AbsId, Int_t * RelId)
{
  // RelId[0] = PHOS Module number 1:fNModules 
  // RelId[1] = 0 if PbW04
  //          = PPSD Module number 1:fNumberOfModulesPhi*fNumberOfModulesZ*2 (2->up and bottom level)
  // RelId[2] = Row number inside a PHOS or PPSD module
  // RelId[3] = Column number inside a PHOS or PPSD module

  Bool_t rv  = kTRUE ; 
  Float_t Id = AbsId ;

  Int_t PHOSModuleNumber = (Int_t)TMath:: Ceil( Id / ( GetNPhi() * GetNZ() ) ) ; 
  
  if ( PHOSModuleNumber >  GetNModules() ) { // its a PPSD pad

    Id -=  GetNPhi() * GetNZ() *  GetNModules() ; 
    Float_t tempo = 2 *  GetNumberOfModulesPhi() * GetNumberOfModulesZ() *  GetNumberOfPadsPhi() * GetNumberOfPadsZ() ; 
    RelId[0] = (Int_t)TMath::Ceil( Id / tempo ) ; 
    Id -= ( RelId[0] - 1 ) * tempo ;
    RelId[1] = (Int_t)TMath::Ceil( Id / ( GetNumberOfPadsPhi() * GetNumberOfPadsZ() ) ) ; 
    Id -= ( RelId[1] - 1 ) * GetNumberOfPadsPhi() * GetNumberOfPadsZ() ;
    RelId[2] = (Int_t)TMath::Ceil( Id / GetNumberOfPadsPhi() ) ;
    RelId[3] = (Int_t) ( Id - ( RelId[2] - 1 )  * GetNumberOfPadsPhi() ) ; 
  } 
  else { // its a PW04 crystal

    RelId[0] = PHOSModuleNumber ;
    RelId[1] = 0 ;
    Id -= ( PHOSModuleNumber - 1 ) *  GetNPhi() * GetNZ() ; 
    RelId[2] = (Int_t)TMath::Ceil( Id / GetNPhi() ) ;
    RelId[3] = (Int_t)( Id - ( RelId[2] - 1 ) * GetNPhi() ) ; 
  } 
  return rv ; 
}

//____________________________________________________________________________
void AliPHOSGeometry::GetGlobal(const AliRecPoint* RecPoint, TVector3 & gpos, TMatrix & gmat)
{

  AliPHOSRecPoint * tmpPHOS = (AliPHOSRecPoint *) RecPoint ;  
  TVector3 LocalPosition ;

  tmpPHOS->GetLocalPosition(gpos) ;


  if ( tmpPHOS->IsEmc() ) // it is a EMC crystal 
    {  gpos.SetY( -(GetIPtoOuterCoverDistance() + GetUpperPlateThickness() +
		    GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness()) ) ;  

    }
  else
    { // it is a PPSD pad
      AliPHOSPpsdRecPoint * tmpPpsd = (AliPHOSPpsdRecPoint *) RecPoint ;
      if (tmpPpsd->GetUp() ) // it is an upper module
	{
	  gpos.SetY(-( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() - 
		       GetLeadToMicro2Gap() - GetLeadConverterThickness() -  
		       GetMicro1ToLeadGap() - GetMicromegas1Thickness() / 2.0 )  ) ; 
	} 
      else // it is a lower module
	gpos.SetY(-( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() / 2.0) ) ; 
    }  

  Float_t Phi           = GetPHOSAngle( tmpPHOS->GetPHOSMod()) ; 
  Double_t const RADDEG = 180.0 / kPI ;
  Float_t rPhi          = Phi / RADDEG ; 
  
  TRotation Rot ;
  Rot.RotateZ(-rPhi) ; // a rotation around Z by angle  
  
  TRotation dummy = Rot.Invert() ;  // to transform from original frame to rotate frame
  gpos.Transform(Rot) ; // rotate the baby 
}

//____________________________________________________________________________
void AliPHOSGeometry::GetGlobal(const AliRecPoint* RecPoint, TVector3 & gpos)
{
  AliPHOSRecPoint * tmpPHOS = (AliPHOSRecPoint *) RecPoint ;  
  TVector3 LocalPosition ;
  tmpPHOS->GetLocalPosition(gpos) ;


  if ( tmpPHOS->IsEmc() ) // it is a EMC crystal 
    {  gpos.SetY( -(GetIPtoOuterCoverDistance() + GetUpperPlateThickness() +
		    GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness()) ) ;  
    }
  else
    { // it is a PPSD pad
      AliPHOSPpsdRecPoint * tmpPpsd = (AliPHOSPpsdRecPoint *) RecPoint ;
      if (tmpPpsd->GetUp() ) // it is an upper module
	{
	  gpos.SetY(-( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() - 
		       GetLeadToMicro2Gap() - GetLeadConverterThickness() -  
		       GetMicro1ToLeadGap() - GetMicromegas1Thickness() / 2.0 )  ) ; 
	} 
      else // it is a lower module
	gpos.SetY(-( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() / 2.0) ) ; 
    }  

  Float_t Phi           = GetPHOSAngle( tmpPHOS->GetPHOSMod()) ; 
  Double_t const RADDEG = 180.0 / kPI ;
  Float_t rPhi          = Phi / RADDEG ; 
  
  TRotation Rot ;
  Rot.RotateZ(-rPhi) ; // a rotation around Z by angle  
  
  TRotation dummy = Rot.Invert() ;  // to transform from original frame to rotate frame
  gpos.Transform(Rot) ; // rotate the baby 
}

//____________________________________________________________________________
void AliPHOSGeometry::Init(void)
{
  fRotMatrixArray = new TObjArray(fNModules) ; 

  cout << "PHOS geometry setup: parameters for option " << fName << " " << fTitle << endl ;
  if ( ((strcmp( fName, "default" )) == 0)  || ((strcmp( fName, "GPS2" )) == 0) ) {
    fInit     = kTRUE ; 
    this->InitPHOS() ; 
    this->InitPPSD() ;
    this->SetPHOSAngles() ; 
  }
 else {
   fInit = kFALSE ; 
   cout << "PHOS Geometry setup: option not defined " << fName << endl ; 
 }
}

//____________________________________________________________________________
void AliPHOSGeometry::InitPHOS(void)
{
     // PHOS 

  fNPhi     = 64 ; 
  fNZ       = 64 ; 
  fNModules =  5 ; 
  
  fPHOSAngle[0] = 0.0 ; // Module position angles are set in CreateGeometry()
  fPHOSAngle[1] = 0.0 ;
  fPHOSAngle[2] = 0.0 ;
  fPHOSAngle[3] = 0.0 ;
 
  fXtlSize[0] =  2.2 ;
  fXtlSize[1] = 18.0 ;
  fXtlSize[2] =  2.2 ;

  // all these numbers coming next are subject to changes

  fOuterBoxThickness[0] = 2.8 ;
  fOuterBoxThickness[1] = 5.0 ;      
  fOuterBoxThickness[2] = 5.0 ;
  
  fUpperPlateThickness  = 4.0 ;
  
  fSecondUpperPlateThickness = 5.0 ; 
  
  fCrystalSupportHeight   = 6.95 ; 
  fCrystalWrapThickness   = 0.01 ;
  fCrystalHolderThickness = 0.005 ;
  fModuleBoxThickness     = 2.0 ; 
  fIPtoOuterCoverDistance = 447.0 ;      
  fIPtoCrystalSurface     = 460.0 ;  
  
  fPinDiodeSize[0] = 1.0 ;    
  fPinDiodeSize[1] = 0.1 ;    
  fPinDiodeSize[2] = 1.0 ;    
  
  fUpperCoolingPlateThickness   = 0.06 ; 
  fSupportPlateThickness        = 10.0 ;
  fLowerThermoPlateThickness    =  3.0 ; 
  fLowerTextolitPlateThickness  =  1.0 ;
  fGapBetweenCrystals           = 0.03 ;
  
  fTextolitBoxThickness[0] = 1.5 ;  
  fTextolitBoxThickness[1] = 0.0 ;   
  fTextolitBoxThickness[2] = 3.0 ; 
  
  fAirThickness[0] =  1.56   ;
  fAirThickness[1] = 20.5175 ;  
  fAirThickness[2] =  2.48   ;  
  
  Float_t XtalModulePhiSize =  fNPhi * ( fXtlSize[0] + 2 * fGapBetweenCrystals ) ; 
  Float_t XtalModuleZSize   =  fNZ * ( fXtlSize[2] + 2 * fGapBetweenCrystals ) ;
  
  // The next dimensions are calculated from the above parameters
  
  fOuterBoxSize[0] =  XtalModulePhiSize + 2 * ( fAirThickness[0] + fModuleBoxThickness
						+ fTextolitBoxThickness[0] + fOuterBoxThickness[0] ) ; 
  fOuterBoxSize[1] = ( fXtlSize[1] + fCrystalSupportHeight + fCrystalWrapThickness + fCrystalHolderThickness )
    + 2 * (fAirThickness[1] +  fModuleBoxThickness + fTextolitBoxThickness[1] + fOuterBoxThickness[1] ) ;
  fOuterBoxSize[2] =  XtalModuleZSize +  2 * ( fAirThickness[2] + fModuleBoxThickness 
					       + fTextolitBoxThickness[2] + fOuterBoxThickness[2] ) ; 
  
  fTextolitBoxSize[0]  = fOuterBoxSize[0] - 2 * fOuterBoxThickness[0] ;
  fTextolitBoxSize[1]  = fOuterBoxSize[1] -  fOuterBoxThickness[1] - fUpperPlateThickness ;
  fTextolitBoxSize[2]  = fOuterBoxSize[2] - 2 * fOuterBoxThickness[2] ;
  
  fAirFilledBoxSize[0] =  fTextolitBoxSize[0] - 2 * fTextolitBoxThickness[0] ; 
  fAirFilledBoxSize[1] =  fTextolitBoxSize[1] - fSecondUpperPlateThickness ; 
  fAirFilledBoxSize[2] =  fTextolitBoxSize[2] - 2 * fTextolitBoxThickness[2] ; 
  
}

//____________________________________________________________________________
void AliPHOSGeometry::InitPPSD(void)
{
    // PPSD
    
  fAnodeThickness           = 0.0009 ; 
  fAvalancheGap             = 0.01 ; 
  fCathodeThickness         = 0.0009 ;
  fCompositeThickness       = 0.3 ; 
  fConversionGap            = 0.3 ; 
  fLeadConverterThickness   = 0.56 ; 
  fLeadToMicro2Gap          = 0.1 ; 
  fLidThickness             = 0.2 ; 
  fMicro1ToLeadGap          = 0.1 ; 
  fMicromegasWallThickness  = 0.6 ; 
  fNumberOfModulesPhi       = 4 ; 
  fNumberOfModulesZ         = 4 ; 
  fNumberOfPadsPhi          = 24 ; 
  fNumberOfPadsZ            = 24 ;   
  fPCThickness              = 0.1 ; 
  fPhiDisplacement          = 0.8 ;  
  fZDisplacement            = 0.8 ;  

  fMicromegas1Thickness   = fLidThickness + 2 * fCompositeThickness + fCathodeThickness + fPCThickness 
                              + fAnodeThickness + fConversionGap + fAvalancheGap ; 
  fMicromegas2Thickness   = fMicromegas1Thickness ; 


  fPPSDModuleSize[0] = 38.0 ; 
  fPPSDModuleSize[1] = fMicromegas1Thickness ; 
  fPPSDModuleSize[2] = 38.0 ; 
 
  fPPSDBoxSize[0] = fNumberOfModulesPhi * fPPSDModuleSize[0] + 2 * fPhiDisplacement ;  
  fPPSDBoxSize[1] = fMicromegas2Thickness + fMicromegas2Thickness + fLeadConverterThickness + fMicro1ToLeadGap + fLeadToMicro2Gap ;    
  fPPSDBoxSize[2] = fNumberOfModulesZ *  fPPSDModuleSize[2] + 2 * fZDisplacement ;

  fIPtoTopLidDistance     = fIPtoOuterCoverDistance -  fPPSDBoxSize[1] - 1. ;  
  
}

//____________________________________________________________________________
AliPHOSGeometry *  AliPHOSGeometry::GetInstance() 
{ 
  assert(fGeom!=0) ; 
  return (AliPHOSGeometry *) fGeom ; 
}

//____________________________________________________________________________
AliPHOSGeometry *  AliPHOSGeometry::GetInstance(const Text_t* name, const Text_t* title) 
{
  AliPHOSGeometry * rv = 0  ; 
  if ( fGeom == 0 ) {
    fGeom = new AliPHOSGeometry(name, title) ; 
    rv = (AliPHOSGeometry * ) fGeom ; 
  }
  else {
    if ( strcmp(fGeom->GetName(), name) != 0 ) {
      cout << "AliPHOSGeometry <E> : current geometry is " << fGeom->GetName() << endl
	   << "                      you cannot call     " << name << endl ; 
    }
    else
      rv = (AliPHOSGeometry *) fGeom ; 
  } 
  return rv ; 
}

//____________________________________________________________________________
Bool_t AliPHOSGeometry::RelToAbsNumbering(const Int_t * RelId, Int_t &  AbsId)
{

  // AbsId = 1:fNModules * fNPhi * fNZ  -> PbWO4
  // AbsId = 1:fNModules * 2 * (fNumberOfModulesPhi * fNumberOfModulesZ) * fNumberOfPadsPhi * fNumberOfPadsZ -> PPSD

  Bool_t rv = kTRUE ; 
 
  if ( RelId[1] > 0 ) { // its a PPSD pad

    AbsId =    GetNPhi() * GetNZ() *  GetNModules()                          // the offset to separate emcal crystals from PPSD pads
      + ( RelId[0] - 1 ) * GetNumberOfModulesPhi() * GetNumberOfModulesZ()   // the pads offset of PHOS modules 
                         * GetNumberOfPadsPhi() * GetNumberOfPadsZ() * 2
      + ( RelId[1] - 1 ) * GetNumberOfPadsPhi() * GetNumberOfPadsZ()         // the pads offset of PPSD modules 
      + ( RelId[2] - 1 ) * GetNumberOfPadsPhi()                              // the pads offset of a PPSD row
      + RelId[3] ;                                                           // the column number
  } 
  else {
    if ( RelId[1] == 0 ) { // its a Phos crystal
      AbsId =  ( RelId[0] - 1 ) *  GetNPhi() * GetNZ() // the offset of PHOS modules
        + ( RelId[2] - 1 ) * GetNPhi()                 // the offset of a xtal row
        + RelId[3] ;                                   // the column number
    }
  }

  return rv ; 
}

//____________________________________________________________________________

void AliPHOSGeometry::RelPosInAlice(const Int_t Id, TVector3 & pos ) 
{
   if (Id > 0) { 

  Int_t RelId[4] ;
 
  AbsToRelNumbering(Id , RelId) ;

  Int_t PHOSModule = RelId[0] ; 

  
  if ( RelId[1] == 0 ) // it is a PbW04 crystal 
  {  pos.SetY( -(GetIPtoOuterCoverDistance() + GetUpperPlateThickness()
      + GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness()) ) ;  
  }
  if ( RelId[1] > 0 ) { // its a PPSD pad
    if ( RelId[1] >  GetNumberOfModulesPhi() *  GetNumberOfModulesZ() ) // its an bottom module
     {
       pos.SetY(-( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() / 2.0) ) ;
     } 
    else // its an upper module
      pos.SetY(-( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() - GetLeadToMicro2Gap()
	-  GetLeadConverterThickness() -  GetMicro1ToLeadGap() - GetMicromegas1Thickness() / 2.0) ) ; 
  }

  Float_t x, z ; 
  RelPosInModule(RelId, x, z) ; 

  pos.SetX(x);
  pos.SetZ(z);


   Float_t Phi           = GetPHOSAngle( PHOSModule) ; 
   Double_t const RADDEG = 180.0 / kPI ;
   Float_t rPhi          = Phi / RADDEG ; 

   TRotation Rot ;
   Rot.RotateZ(-rPhi) ; // a rotation around Z by angle  
  
   TRotation dummy = Rot.Invert() ;  // to transform from original frame to rotate frame
  
   pos.Transform(Rot) ; // rotate the baby 
  }
  else {
 pos.SetX(0.);
 pos.SetY(0.);
 pos.SetZ(0.);
       }
} 

//____________________________________________________________________________
void AliPHOSGeometry::RelPosInModule(const Int_t * RelId, Float_t & x, Float_t & z) 
{
  Int_t PPSDModule  ; 
  Int_t Row        = RelId[2] ; //offset along z axiz
  Int_t Column     = RelId[3] ; //offset along x axiz

  Float_t PadSizeZ = GetPPSDModuleSize(2)/ GetNumberOfPadsZ();
  Float_t PadSizeX = GetPPSDModuleSize(0)/ GetNumberOfPadsPhi();

  if ( RelId[1] == 0 ) { // its a PbW04 crystal 
    x = -( GetNPhi()/2. - Row   + 0.5 ) *  GetCrystalSize(0) ; // position ox Xtal with respect
    z = -( GetNZ() /2. - Column + 0.5 ) *  GetCrystalSize(2) ; // of center of PHOS module  
   }  
   else  {    
    if ( RelId[1] >  GetNumberOfModulesPhi() *  GetNumberOfModulesZ() )
       PPSDModule =  RelId[1]-GetNumberOfModulesPhi() *  GetNumberOfModulesZ(); 
    else PPSDModule =  RelId[1] ;
    Int_t ModRow = 1+(Int_t)TMath::Ceil( (Float_t)PPSDModule / GetNumberOfModulesPhi()-1. ) ; 
    Int_t ModCol = PPSDModule -  ( ModRow-1 ) * GetNumberOfModulesPhi() ;     
    Float_t x0 = (  GetNumberOfModulesPhi() / 2.  - ModRow  + 0.5 ) * GetPPSDModuleSize(0) ;
    Float_t z0 = (  GetNumberOfModulesZ() / 2.  - ModCol  + 0.5 ) * GetPPSDModuleSize(2)  ;     
    x = - ( GetNumberOfPadsPhi()/2. - Row - 0.5 ) * PadSizeX + x0 ; // position of pad  with respect
    z = - ( GetNumberOfPadsZ()/2.   - Column - 0.5 ) * PadSizeZ + z0 ; // of center of PHOS module  
         }
}

//____________________________________________________________________________
void AliPHOSGeometry:: SetPHOSAngles() 
{ 
  Double_t const RADDEG = 180.0 / kPI ;
  Float_t PPHI =  TMath::ATan( fOuterBoxSize[0]  / ( 2.0 * fIPtoOuterCoverDistance ) ) ;
  PPHI *= RADDEG ;
  
  for( Int_t i = 1; i <= fNModules ; i++ ) {
    Float_t angle = PPHI * 2 * ( i - fNModules / 2.0 - 0.5 ) ;
    fPHOSAngle[i-1] = -  angle ;
 } 
}
Commit	Line	Data
d15a28e7	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	//_________________________________________________________________________
	17	// Geometry class for PHOS version SUBATECH
	18	//*-- Author : Y. Schutz SUBATECH
	19	//////////////////////////////////////////////////////////////////////////////
	20
	21	// --- ROOT system ---
	22
	23	#include "TVector3.h"
	24	#include "TRotation.h"
	25
	26	// --- Standard library ---
	27
	28	#include <iostream.h>
	29	#include "assert.h"
	30
	31	// --- AliRoot header files ---
	32
	33	#include "AliPHOSGeometry.h"
	34	#include "AliPHOSPpsdRecPoint.h"
	35	#include "AliConst.h"
	36
	37	ClassImp(AliPHOSGeometry)
	38
	39	AliPHOSGeometry * AliPHOSGeometry::fGeom = 0 ;
	40
	41	//____________________________________________________________________________
	42	AliPHOSGeometry::~AliPHOSGeometry(void)
	43	{
	44	fRotMatrixArray->Delete() ;
	45	delete fRotMatrixArray ;
	46	}
	47
	48	//____________________________________________________________________________
	49	Bool_t AliPHOSGeometry::AbsToRelNumbering(const Int_t AbsId, Int_t * RelId)
	50	{
	51	// RelId[0] = PHOS Module number 1:fNModules
	52	// RelId[1] = 0 if PbW04
	53	// = PPSD Module number 1:fNumberOfModulesPhifNumberOfModulesZ2 (2->up and bottom level)
	54	// RelId[2] = Row number inside a PHOS or PPSD module
	55	// RelId[3] = Column number inside a PHOS or PPSD module
	56
	57	Bool_t rv = kTRUE ;
	58	Float_t Id = AbsId ;
	59
	60	Int_t PHOSModuleNumber = (Int_t)TMath:: Ceil( Id / ( GetNPhi() * GetNZ() ) ) ;
	61
	62	if ( PHOSModuleNumber > GetNModules() ) { // its a PPSD pad
	63
	64	Id -= GetNPhi() * GetNZ() * GetNModules() ;
65	Float_t tempo = 2 * GetNumberOfModulesPhi() * GetNumberOfModulesZ() * GetNumberOfPadsPhi() * GetNumberOfPadsZ() ;
66	RelId[0] = (Int_t)TMath::Ceil( Id / tempo ) ;
67	Id -= ( RelId[0] - 1 ) * tempo ;
68	RelId[1] = (Int_t)TMath::Ceil( Id / ( GetNumberOfPadsPhi() * GetNumberOfPadsZ() ) ) ;
69	Id -= ( RelId[1] - 1 ) * GetNumberOfPadsPhi() * GetNumberOfPadsZ() ;
70	RelId[2] = (Int_t)TMath::Ceil( Id / GetNumberOfPadsPhi() ) ;
71	RelId[3] = (Int_t) ( Id - ( RelId[2] - 1 ) * GetNumberOfPadsPhi() ) ;
72	}
73	else { // its a PW04 crystal
74
75	RelId[0] = PHOSModuleNumber ;
76	RelId[1] = 0 ;
77	Id -= ( PHOSModuleNumber - 1 ) * GetNPhi() * GetNZ() ;
78	RelId[2] = (Int_t)TMath::Ceil( Id / GetNPhi() ) ;
79	RelId[3] = (Int_t)( Id - ( RelId[2] - 1 ) * GetNPhi() ) ;
80	}
81	return rv ;
82	}
83
84	//____________________________________________________________________________
85	void AliPHOSGeometry::GetGlobal(const AliRecPoint* RecPoint, TVector3 & gpos, TMatrix & gmat)
86	{
87
88	AliPHOSRecPoint * tmpPHOS = (AliPHOSRecPoint *) RecPoint ;
89	TVector3 LocalPosition ;
90
91	tmpPHOS->GetLocalPosition(gpos) ;
92
93
94	if ( tmpPHOS->IsEmc() ) // it is a EMC crystal
95	{ gpos.SetY( -(GetIPtoOuterCoverDistance() + GetUpperPlateThickness() +
96	GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness()) ) ;
97
98	}
99	else
100	{ // it is a PPSD pad
101	AliPHOSPpsdRecPoint * tmpPpsd = (AliPHOSPpsdRecPoint *) RecPoint ;
102	if (tmpPpsd->GetUp() ) // it is an upper module
103	{
104	gpos.SetY(-( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() -
105	GetLeadToMicro2Gap() - GetLeadConverterThickness() -
106	GetMicro1ToLeadGap() - GetMicromegas1Thickness() / 2.0 ) ) ;
107	}
108	else // it is a lower module
109	gpos.SetY(-( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() / 2.0) ) ;
110	}
111
112	Float_t Phi = GetPHOSAngle( tmpPHOS->GetPHOSMod()) ;
113	Double_t const RADDEG = 180.0 / kPI ;
114	Float_t rPhi = Phi / RADDEG ;
115
116	TRotation Rot ;
117	Rot.RotateZ(-rPhi) ; // a rotation around Z by angle
118
119	TRotation dummy = Rot.Invert() ; // to transform from original frame to rotate frame
120	gpos.Transform(Rot) ; // rotate the baby
121	}
122
123	//____________________________________________________________________________
124	void AliPHOSGeometry::GetGlobal(const AliRecPoint* RecPoint, TVector3 & gpos)
125	{
126	AliPHOSRecPoint * tmpPHOS = (AliPHOSRecPoint *) RecPoint ;
127	TVector3 LocalPosition ;
128	tmpPHOS->GetLocalPosition(gpos) ;
129
130
131	if ( tmpPHOS->IsEmc() ) // it is a EMC crystal
132	{ gpos.SetY( -(GetIPtoOuterCoverDistance() + GetUpperPlateThickness() +
133	GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness()) ) ;
134	}
135	else
136	{ // it is a PPSD pad
137	AliPHOSPpsdRecPoint * tmpPpsd = (AliPHOSPpsdRecPoint *) RecPoint ;
138	if (tmpPpsd->GetUp() ) // it is an upper module
139	{
140	gpos.SetY(-( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() -
141	GetLeadToMicro2Gap() - GetLeadConverterThickness() -
142	GetMicro1ToLeadGap() - GetMicromegas1Thickness() / 2.0 ) ) ;
143	}
144	else // it is a lower module
145	gpos.SetY(-( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() / 2.0) ) ;
146	}
147
148	Float_t Phi = GetPHOSAngle( tmpPHOS->GetPHOSMod()) ;
149	Double_t const RADDEG = 180.0 / kPI ;
150	Float_t rPhi = Phi / RADDEG ;
151
152	TRotation Rot ;
153	Rot.RotateZ(-rPhi) ; // a rotation around Z by angle
154
155	TRotation dummy = Rot.Invert() ; // to transform from original frame to rotate frame
156	gpos.Transform(Rot) ; // rotate the baby
157	}
158
159	//____________________________________________________________________________
160	void AliPHOSGeometry::Init(void)
161	{
162	fRotMatrixArray = new TObjArray(fNModules) ;
163
164	cout << "PHOS geometry setup: parameters for option " << fName << " " << fTitle << endl ;
165	if ( ((strcmp( fName, "default" )) == 0) \|\| ((strcmp( fName, "GPS2" )) == 0) ) {
166	fInit = kTRUE ;
167	this->InitPHOS() ;
168	this->InitPPSD() ;
169	this->SetPHOSAngles() ;
170	}
171	else {
172	fInit = kFALSE ;
173	cout << "PHOS Geometry setup: option not defined " << fName << endl ;
174	}
175	}
176
177	//____________________________________________________________________________
178	void AliPHOSGeometry::InitPHOS(void)
179	{
180	// PHOS
181
182	fNPhi = 64 ;
183	fNZ = 64 ;
184	fNModules = 5 ;
185
186	fPHOSAngle[0] = 0.0 ; // Module position angles are set in CreateGeometry()
187	fPHOSAngle[1] = 0.0 ;
188	fPHOSAngle[2] = 0.0 ;
189	fPHOSAngle[3] = 0.0 ;
190
191	fXtlSize[0] = 2.2 ;
192	fXtlSize[1] = 18.0 ;
193	fXtlSize[2] = 2.2 ;
194
195	// all these numbers coming next are subject to changes
196
197	fOuterBoxThickness[0] = 2.8 ;
198	fOuterBoxThickness[1] = 5.0 ;
199	fOuterBoxThickness[2] = 5.0 ;
200
201	fUpperPlateThickness = 4.0 ;
202
203	fSecondUpperPlateThickness = 5.0 ;
204
205	fCrystalSupportHeight = 6.95 ;
206	fCrystalWrapThickness = 0.01 ;
207	fCrystalHolderThickness = 0.005 ;
208	fModuleBoxThickness = 2.0 ;
209	fIPtoOuterCoverDistance = 447.0 ;
210	fIPtoCrystalSurface = 460.0 ;
211
212	fPinDiodeSize[0] = 1.0 ;
213	fPinDiodeSize[1] = 0.1 ;
214	fPinDiodeSize[2] = 1.0 ;
215
216	fUpperCoolingPlateThickness = 0.06 ;
217	fSupportPlateThickness = 10.0 ;
218	fLowerThermoPlateThickness = 3.0 ;
219	fLowerTextolitPlateThickness = 1.0 ;
220	fGapBetweenCrystals = 0.03 ;
221
222	fTextolitBoxThickness[0] = 1.5 ;
223	fTextolitBoxThickness[1] = 0.0 ;
224	fTextolitBoxThickness[2] = 3.0 ;
225
226	fAirThickness[0] = 1.56 ;
227	fAirThickness[1] = 20.5175 ;
228	fAirThickness[2] = 2.48 ;
229
230	Float_t XtalModulePhiSize = fNPhi * ( fXtlSize[0] + 2 * fGapBetweenCrystals ) ;
231	Float_t XtalModuleZSize = fNZ * ( fXtlSize[2] + 2 * fGapBetweenCrystals ) ;
232
233	// The next dimensions are calculated from the above parameters
234
235	fOuterBoxSize[0] = XtalModulePhiSize + 2 * ( fAirThickness[0] + fModuleBoxThickness
236	+ fTextolitBoxThickness[0] + fOuterBoxThickness[0] ) ;
237	fOuterBoxSize[1] = ( fXtlSize[1] + fCrystalSupportHeight + fCrystalWrapThickness + fCrystalHolderThickness )
238	+ 2 * (fAirThickness[1] + fModuleBoxThickness + fTextolitBoxThickness[1] + fOuterBoxThickness[1] ) ;
239	fOuterBoxSize[2] = XtalModuleZSize + 2 * ( fAirThickness[2] + fModuleBoxThickness
240	+ fTextolitBoxThickness[2] + fOuterBoxThickness[2] ) ;
241
242	fTextolitBoxSize[0] = fOuterBoxSize[0] - 2 * fOuterBoxThickness[0] ;
243	fTextolitBoxSize[1] = fOuterBoxSize[1] - fOuterBoxThickness[1] - fUpperPlateThickness ;
244	fTextolitBoxSize[2] = fOuterBoxSize[2] - 2 * fOuterBoxThickness[2] ;
245
246	fAirFilledBoxSize[0] = fTextolitBoxSize[0] - 2 * fTextolitBoxThickness[0] ;
247	fAirFilledBoxSize[1] = fTextolitBoxSize[1] - fSecondUpperPlateThickness ;
248	fAirFilledBoxSize[2] = fTextolitBoxSize[2] - 2 * fTextolitBoxThickness[2] ;
249
250	}
251
252	//____________________________________________________________________________
253	void AliPHOSGeometry::InitPPSD(void)
254	{
255	// PPSD
256
257	fAnodeThickness = 0.0009 ;
258	fAvalancheGap = 0.01 ;
259	fCathodeThickness = 0.0009 ;
260	fCompositeThickness = 0.3 ;
261	fConversionGap = 0.3 ;
262	fLeadConverterThickness = 0.56 ;
263	fLeadToMicro2Gap = 0.1 ;
264	fLidThickness = 0.2 ;
265	fMicro1ToLeadGap = 0.1 ;
266	fMicromegasWallThickness = 0.6 ;
267	fNumberOfModulesPhi = 4 ;
268	fNumberOfModulesZ = 4 ;
269	fNumberOfPadsPhi = 24 ;
270	fNumberOfPadsZ = 24 ;
271	fPCThickness = 0.1 ;
272	fPhiDisplacement = 0.8 ;
273	fZDisplacement = 0.8 ;
274
275	fMicromegas1Thickness = fLidThickness + 2 * fCompositeThickness + fCathodeThickness + fPCThickness
276	+ fAnodeThickness + fConversionGap + fAvalancheGap ;
277	fMicromegas2Thickness = fMicromegas1Thickness ;
278
279
280	fPPSDModuleSize[0] = 38.0 ;
281	fPPSDModuleSize[1] = fMicromegas1Thickness ;
282	fPPSDModuleSize[2] = 38.0 ;
283
284	fPPSDBoxSize[0] = fNumberOfModulesPhi * fPPSDModuleSize[0] + 2 * fPhiDisplacement ;
285	fPPSDBoxSize[1] = fMicromegas2Thickness + fMicromegas2Thickness + fLeadConverterThickness + fMicro1ToLeadGap + fLeadToMicro2Gap ;
286	fPPSDBoxSize[2] = fNumberOfModulesZ * fPPSDModuleSize[2] + 2 * fZDisplacement ;
287
288	fIPtoTopLidDistance = fIPtoOuterCoverDistance - fPPSDBoxSize[1] - 1. ;
289
290	}
291
292	//____________________________________________________________________________
293	AliPHOSGeometry * AliPHOSGeometry::GetInstance()
294	{
295	assert(fGeom!=0) ;
296	return (AliPHOSGeometry *) fGeom ;
297	}
298
299	//____________________________________________________________________________
300	AliPHOSGeometry * AliPHOSGeometry::GetInstance(const Text_t* name, const Text_t* title)
301	{
302	AliPHOSGeometry * rv = 0 ;
303	if ( fGeom == 0 ) {
304	fGeom = new AliPHOSGeometry(name, title) ;
305	rv = (AliPHOSGeometry * ) fGeom ;
306	}
307	else {
308	if ( strcmp(fGeom->GetName(), name) != 0 ) {
309	cout << "AliPHOSGeometry <E> : current geometry is " << fGeom->GetName() << endl
310	<< " you cannot call " << name << endl ;
311	}
312	else
313	rv = (AliPHOSGeometry *) fGeom ;
314	}
315	return rv ;
316	}
317
318	//____________________________________________________________________________
319	Bool_t AliPHOSGeometry::RelToAbsNumbering(const Int_t * RelId, Int_t & AbsId)
320	{
321
322	// AbsId = 1:fNModules * fNPhi * fNZ -> PbWO4
323	// AbsId = 1:fNModules * 2 * (fNumberOfModulesPhi * fNumberOfModulesZ) * fNumberOfPadsPhi * fNumberOfPadsZ -> PPSD
324
325	Bool_t rv = kTRUE ;
326
327	if ( RelId[1] > 0 ) { // its a PPSD pad
328
329	AbsId = GetNPhi() * GetNZ() * GetNModules() // the offset to separate emcal crystals from PPSD pads
330	+ ( RelId[0] - 1 ) * GetNumberOfModulesPhi() * GetNumberOfModulesZ() // the pads offset of PHOS modules
331	* GetNumberOfPadsPhi() * GetNumberOfPadsZ() * 2
332	+ ( RelId[1] - 1 ) * GetNumberOfPadsPhi() * GetNumberOfPadsZ() // the pads offset of PPSD modules
333	+ ( RelId[2] - 1 ) * GetNumberOfPadsPhi() // the pads offset of a PPSD row
334	+ RelId[3] ; // the column number
335	}
336	else {
337	if ( RelId[1] == 0 ) { // its a Phos crystal
338	AbsId = ( RelId[0] - 1 ) * GetNPhi() * GetNZ() // the offset of PHOS modules
339	+ ( RelId[2] - 1 ) * GetNPhi() // the offset of a xtal row
340	+ RelId[3] ; // the column number
341	}
342	}
343
344	return rv ;
345	}
346
347	//____________________________________________________________________________
348
349	void AliPHOSGeometry::RelPosInAlice(const Int_t Id, TVector3 & pos )
350	{
351	if (Id > 0) {
352
353	Int_t RelId[4] ;
354
355	AbsToRelNumbering(Id , RelId) ;
356
357	Int_t PHOSModule = RelId[0] ;
358
359
360	if ( RelId[1] == 0 ) // it is a PbW04 crystal
361	{ pos.SetY( -(GetIPtoOuterCoverDistance() + GetUpperPlateThickness()
362	+ GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness()) ) ;
363	}
364	if ( RelId[1] > 0 ) { // its a PPSD pad
365	if ( RelId[1] > GetNumberOfModulesPhi() * GetNumberOfModulesZ() ) // its an bottom module
366	{
367	pos.SetY(-( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() / 2.0) ) ;
368	}
369	else // its an upper module
370	pos.SetY(-( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() - GetLeadToMicro2Gap()
371	- GetLeadConverterThickness() - GetMicro1ToLeadGap() - GetMicromegas1Thickness() / 2.0) ) ;
372	}
373
374	Float_t x, z ;
375	RelPosInModule(RelId, x, z) ;
376
377	pos.SetX(x);
378	pos.SetZ(z);
379
380
381	Float_t Phi = GetPHOSAngle( PHOSModule) ;
382	Double_t const RADDEG = 180.0 / kPI ;
383	Float_t rPhi = Phi / RADDEG ;
384
385	TRotation Rot ;
386	Rot.RotateZ(-rPhi) ; // a rotation around Z by angle
387
388	TRotation dummy = Rot.Invert() ; // to transform from original frame to rotate frame
389
390	pos.Transform(Rot) ; // rotate the baby
391	}
392	else {
393	pos.SetX(0.);
394	pos.SetY(0.);
395	pos.SetZ(0.);
396	}
397	}
398
399	//____________________________________________________________________________
400	void AliPHOSGeometry::RelPosInModule(const Int_t * RelId, Float_t & x, Float_t & z)
401	{
402	Int_t PPSDModule ;
403	Int_t Row = RelId[2] ; //offset along z axiz
404	Int_t Column = RelId[3] ; //offset along x axiz
405
406	Float_t PadSizeZ = GetPPSDModuleSize(2)/ GetNumberOfPadsZ();
407	Float_t PadSizeX = GetPPSDModuleSize(0)/ GetNumberOfPadsPhi();
408
409	if ( RelId[1] == 0 ) { // its a PbW04 crystal
410	x = -( GetNPhi()/2. - Row + 0.5 ) * GetCrystalSize(0) ; // position ox Xtal with respect
411	z = -( GetNZ() /2. - Column + 0.5 ) * GetCrystalSize(2) ; // of center of PHOS module
412	}
413	else {
414	if ( RelId[1] > GetNumberOfModulesPhi() * GetNumberOfModulesZ() )
415	PPSDModule = RelId[1]-GetNumberOfModulesPhi() * GetNumberOfModulesZ();
416	else PPSDModule = RelId[1] ;
417	Int_t ModRow = 1+(Int_t)TMath::Ceil( (Float_t)PPSDModule / GetNumberOfModulesPhi()-1. ) ;
418	Int_t ModCol = PPSDModule - ( ModRow-1 ) * GetNumberOfModulesPhi() ;
419	Float_t x0 = ( GetNumberOfModulesPhi() / 2. - ModRow + 0.5 ) * GetPPSDModuleSize(0) ;
420	Float_t z0 = ( GetNumberOfModulesZ() / 2. - ModCol + 0.5 ) * GetPPSDModuleSize(2) ;
421	x = - ( GetNumberOfPadsPhi()/2. - Row - 0.5 ) * PadSizeX + x0 ; // position of pad with respect
422	z = - ( GetNumberOfPadsZ()/2. - Column - 0.5 ) * PadSizeZ + z0 ; // of center of PHOS module
423	}
424	}
425
426	//____________________________________________________________________________
427	void AliPHOSGeometry:: SetPHOSAngles()
428	{
429	Double_t const RADDEG = 180.0 / kPI ;
430	Float_t PPHI = TMath::ATan( fOuterBoxSize[0] / ( 2.0 * fIPtoOuterCoverDistance ) ) ;
431	PPHI *= RADDEG ;
432
433	for( Int_t i = 1; i <= fNModules ; i++ ) {
434	Float_t angle = PPHI * 2 * ( i - fNModules / 2.0 - 0.5 ) ;
435	fPHOSAngle[i-1] = - angle ;
436	}
437	}
438