* provided "as is" without express or implied warranty. *
**************************************************************************/
+/* $Id$ */
+
//_________________________________________________________________________
-// Geometry class for PHOS version SUBATECH
-//*-- Author : Y. Schutz SUBATECH
-//////////////////////////////////////////////////////////////////////////////
+// Geometry class for PHOS : singleton
+// PHOS consists of the electromagnetic calorimeter (EMCA)
+// and a charged particle veto either in the Subatech's version (PPSD)
+// or in the IHEP's one (CPV).
+// The EMCA/PPSD/CPV modules are parametrized so that any configuration
+// can be easily implemented
+// The title is used to identify the version of CPV used.
+//
+//*-- Author: Yves Schutz (SUBATECH) & Dmitri Peressounko (RRC "KI" & SUBATECH)
// --- ROOT system ---
#include "TVector3.h"
#include "TRotation.h"
+#include "TFolder.h"
+#include "TROOT.h"
// --- Standard library ---
#include <iostream.h>
-#include "assert.h"
+#include <stdlib.h>
// --- AliRoot header files ---
#include "AliPHOSGeometry.h"
-#include "AliPHOSPpsdRecPoint.h"
+#include "AliPHOSEMCAGeometry.h"
+#include "AliPHOSRecPoint.h"
#include "AliConst.h"
-ClassImp(AliPHOSGeometry)
+ClassImp(AliPHOSGeometry) ;
- AliPHOSGeometry * AliPHOSGeometry::fGeom = 0 ;
+// these initialisations are needed for a singleton
+AliPHOSGeometry * AliPHOSGeometry::fgGeom = 0 ;
+Bool_t AliPHOSGeometry::fgInit = kFALSE ;
//____________________________________________________________________________
AliPHOSGeometry::~AliPHOSGeometry(void)
{
- fRotMatrixArray->Delete() ;
- delete fRotMatrixArray ;
+ // dtor
+
+ if (fRotMatrixArray) fRotMatrixArray->Delete() ;
+ if (fRotMatrixArray) delete fRotMatrixArray ;
+ if (fPHOSAngle ) delete[] fPHOSAngle ;
+}
+//____________________________________________________________________________
+
+void AliPHOSGeometry::Init(void)
+{
+ // Initializes the PHOS parameters :
+ // IHEP is the Protvino CPV (cathode pad chambers)
+ // GPS2 is the Subatech Pre-Shower (two micromegas sandwiching a passive lead converter)
+ // MIXT 4 PHOS modules withe the IHEP CPV and one PHOS module with the Subatech Pre-Shower
+
+ TString test(GetName()) ;
+ if (test != "IHEP" && test != "GPS2" && test != "MIXT") {
+ cerr << "ERROR: " << ClassName() << "::Init -> " << test.Data()
+ << " is not a known geometry (choose among IHEP, GPS2 and MIXT)" << endl ;
+ abort() ;
+ }
+
+ fgInit = kTRUE ;
+
+ fNModules = 5;
+ fAngle = 20;
+
+ fGeometryEMCA = new AliPHOSEMCAGeometry();
+
+ fGeometryCPV = new AliPHOSCPVGeometry ();
+
+ fGeometrySUPP = new AliPHOSSupportGeometry();
+
+ fPHOSAngle = new Float_t[fNModules] ;
+
+ Float_t * emcParams = fGeometryEMCA->GetEMCParams() ;
+
+ fPHOSParams[0] = TMath::Max((Double_t)fGeometryCPV->GetCPVBoxSize(0)/2.,
+ (Double_t)(emcParams[0]*(fGeometryCPV->GetCPVBoxSize(1)+emcParams[3]) -
+ emcParams[1]* fGeometryCPV->GetCPVBoxSize(1))/emcParams[3] ) ;
+ fPHOSParams[1] = emcParams[1] ;
+ fPHOSParams[2] = TMath::Max((Double_t)emcParams[2], (Double_t)fGeometryCPV->GetCPVBoxSize(2)/2.);
+ fPHOSParams[3] = emcParams[3] + fGeometryCPV->GetCPVBoxSize(1)/2. ;
+
+ fIPtoUpperCPVsurface = fGeometryEMCA->GetIPtoOuterCoverDistance() - fGeometryCPV->GetCPVBoxSize(1) ;
+
+ Int_t index ;
+ for ( index = 0; index < fNModules; index++ )
+ fPHOSAngle[index] = 0.0 ; // Module position angles are set in CreateGeometry()
+
+ this->SetPHOSAngles() ;
+ fRotMatrixArray = new TObjArray(fNModules) ;
+
+}
+
+//____________________________________________________________________________
+AliPHOSGeometry * AliPHOSGeometry::GetInstance()
+{
+ // Returns the pointer of the unique instance; singleton specific
+
+ return static_cast<AliPHOSGeometry *>( fgGeom ) ;
}
//____________________________________________________________________________
-Bool_t AliPHOSGeometry::AbsToRelNumbering(const Int_t AbsId, Int_t * RelId)
+AliPHOSGeometry * AliPHOSGeometry::GetInstance(const Text_t* name, const Text_t* title)
{
- // 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
+ // Returns the pointer of the unique instance
+ // Creates it with the specified options (name, title) if it does not exist yet
+
+ AliPHOSGeometry * rv = 0 ;
+ if ( fgGeom == 0 ) {
+ if ( strcmp(name,"") == 0 )
+ rv = 0 ;
+ else {
+ fgGeom = new AliPHOSGeometry(name, title) ;
+ if ( fgInit )
+ rv = (AliPHOSGeometry * ) fgGeom ;
+ else {
+ rv = 0 ;
+ delete fgGeom ;
+ fgGeom = 0 ;
+ }
+ }
+ }
+ else {
+ if ( strcmp(fgGeom->GetName(), name) != 0 ) {
+ cout << "AliPHOSGeometry <E> : current geometry is " << fgGeom->GetName() << endl
+ << " you cannot call " << name << endl ;
+ }
+ else
+ rv = (AliPHOSGeometry *) fgGeom ;
+ }
+ return rv ;
+}
+
+//____________________________________________________________________________
+void AliPHOSGeometry::SetPHOSAngles()
+{
+ // Calculates the position of the PHOS modules in ALICE global coordinate system
+
+ Double_t const kRADDEG = 180.0 / kPI ;
+ Float_t pphi = 2 * TMath::ATan( GetOuterBoxSize(0) / ( 2.0 * GetIPtoUpperCPVsurface() ) ) ;
+ pphi *= kRADDEG ;
+ if (pphi > fAngle){
+ cout << "AliPHOSGeometry: PHOS modules overlap!\n";
+ cout << "pphi = " << pphi << " fAngle " << fAngle << endl ;
+
+ }
+ pphi = fAngle;
+
+ for( Int_t i = 1; i <= fNModules ; i++ ) {
+ Float_t angle = pphi * ( i - fNModules / 2.0 - 0.5 ) ;
+ fPHOSAngle[i-1] = - angle ;
+ }
+}
+
+//____________________________________________________________________________
+Bool_t AliPHOSGeometry::AbsToRelNumbering(const Int_t AbsId, Int_t * relid) const
+{
+ // Converts the absolute numbering into the following array/
+ // relid[0] = PHOS Module number 1:fNModules
+ // relid[1] = 0 if PbW04
+ // = -1 if CPV
+ // relid[2] = Row number inside a PHOS module
+ // relid[3] = Column number inside a PHOS module
Bool_t rv = kTRUE ;
- Float_t Id = AbsId ;
+ Float_t id = AbsId ;
- Int_t PHOSModuleNumber = (Int_t)TMath:: Ceil( Id / ( GetNPhi() * GetNZ() ) ) ;
+ Int_t phosmodulenumber = (Int_t)TMath:: Ceil( id / GetNCristalsInModule() ) ;
- 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() ) ;
+ if ( phosmodulenumber > GetNModules() ) { // it is a CPV pad
+
+ id -= GetNPhi() * GetNZ() * GetNModules() ;
+ Float_t nCPV = GetNumberOfCPVPadsPhi() * GetNumberOfCPVPadsZ() ;
+ relid[0] = (Int_t) TMath::Ceil( id / nCPV ) ;
+ relid[1] = -1 ;
+ id -= ( relid[0] - 1 ) * nCPV ;
+ relid[2] = (Int_t) TMath::Ceil( id / GetNumberOfCPVPadsZ() ) ;
+ relid[3] = (Int_t) ( id - ( relid[2] - 1 ) * GetNumberOfCPVPadsZ() ) ;
}
- else { // its a PW04 crystal
+ else { // it is 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() ) ;
+ relid[0] = phosmodulenumber ;
+ relid[1] = 0 ;
+ id -= ( phosmodulenumber - 1 ) * GetNPhi() * GetNZ() ;
+ relid[2] = (Int_t)TMath::Ceil( id / GetNZ() ) ;
+ relid[3] = (Int_t)( id - ( relid[2] - 1 ) * GetNZ() ) ;
}
return rv ;
}
-//____________________________________________________________________________
-void AliPHOSGeometry::GetGlobal(const AliRecPoint* RecPoint, TVector3 & gpos, TMatrix & gmat)
+//____________________________________________________________________________
+void AliPHOSGeometry::EmcModuleCoverage(const Int_t mod, Double_t & tm, Double_t & tM, Double_t & pm, Double_t & pM, Option_t * opt) const
+{
+ // calculates the angular coverage in theta and phi of one EMC (=PHOS) module
+
+ Double_t conv ;
+ if ( opt == Radian() )
+ conv = 1. ;
+ else if ( opt == Degre() )
+ conv = 180. / TMath::Pi() ;
+ else {
+ cout << "<I> AliPHOSGeometry::EmcXtalCoverage : " << opt << " unknown option; result in radian " << endl ;
+ conv = 1. ;
+ }
+
+ Float_t phi = GetPHOSAngle(mod) * (TMath::Pi() / 180.) ;
+ Float_t y0 = GetIPtoCrystalSurface() ;
+ Float_t * strip = fGeometryEMCA->GetStripHalfSize() ;
+ Float_t x0 = fGeometryEMCA->GetNStripX()*strip[0] ;
+ Float_t z0 = fGeometryEMCA->GetNStripZ()*strip[2] ;
+ Double_t angle = TMath::ATan( x0 / y0 ) ;
+ phi = phi + 1.5 * TMath::Pi() ; // to follow the convention of the particle generator(PHOS is between 220 and 320 deg.)
+ Double_t max = phi - angle ;
+ Double_t min = phi + angle ;
+ pM = TMath::Max(max, min) * conv ;
+ pm = TMath::Min(max, min) * conv ;
+
+ angle = TMath::ATan( z0 / y0 ) ;
+ max = TMath::Pi() / 2. + angle ; // to follow the convention of the particle generator(PHOS is at 90 deg.)
+ min = TMath::Pi() / 2. - angle ;
+ tM = TMath::Max(max, min) * conv ;
+ tm = TMath::Min(max, min) * conv ;
+
+}
+
+//____________________________________________________________________________
+void AliPHOSGeometry::EmcXtalCoverage(Double_t & theta, Double_t & phi, Option_t * opt) const
{
+ // calculates the angular coverage in theta and phi of a single crystal in a EMC(=PHOS) module
+
+ Double_t conv ;
+ if ( opt == Radian() )
+ conv = 1. ;
+ else if ( opt == Degre() )
+ conv = 180. / TMath::Pi() ;
+ else {
+ cout << "<I> AliPHOSGeometry::EmcXtalCoverage : " << opt << " unknown option; result in radian " << endl ;
+ conv = 1. ;
+ }
+
+ Float_t y0 = GetIPtoCrystalSurface() ;
+ theta = 2 * TMath::ATan( GetCrystalSize(2) / (2 * y0) ) * conv ;
+ phi = 2 * TMath::ATan( GetCrystalSize(0) / (2 * y0) ) * conv ;
+}
+
+//____________________________________________________________________________
+void AliPHOSGeometry::GetGlobal(const AliRecPoint* RecPoint, TVector3 & gpos, TMatrix & gmat) const
+{
+ // Calculates the coordinates of a RecPoint and the error matrix in the ALICE global coordinate system
+
AliPHOSRecPoint * tmpPHOS = (AliPHOSRecPoint *) RecPoint ;
- TVector3 LocalPosition ;
+ TVector3 localposition ;
tmpPHOS->GetLocalPosition(gpos) ;
if ( tmpPHOS->IsEmc() ) // it is a EMC crystal
- { gpos.SetY( -(GetIPtoOuterCoverDistance() + GetUpperPlateThickness() +
- GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness()) ) ;
+ { gpos.SetY( - GetIPtoCrystalSurface()) ;
}
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) ) ;
+ { // it is a CPV
+ gpos.SetY(- GetIPtoUpperCPVsurface() ) ;
}
- Float_t Phi = GetPHOSAngle( tmpPHOS->GetPHOSMod()) ;
- Double_t const RADDEG = 180.0 / kPI ;
- Float_t rPhi = Phi / RADDEG ;
+ Float_t phi = GetPHOSAngle( tmpPHOS->GetPHOSMod()) ;
+ Double_t const kRADDEG = 180.0 / kPI ;
+ Float_t rphi = phi / kRADDEG ;
- TRotation Rot ;
- Rot.RotateZ(-rPhi) ; // a rotation around Z by angle
+ 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
+ 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)
+void AliPHOSGeometry::GetGlobal(const AliRecPoint* RecPoint, TVector3 & gpos) const
{
+ // Calculates the coordinates of a RecPoint in the ALICE global coordinate system
+
AliPHOSRecPoint * tmpPHOS = (AliPHOSRecPoint *) RecPoint ;
- TVector3 LocalPosition ;
+ TVector3 localposition ;
tmpPHOS->GetLocalPosition(gpos) ;
if ( tmpPHOS->IsEmc() ) // it is a EMC crystal
- { gpos.SetY( -(GetIPtoOuterCoverDistance() + GetUpperPlateThickness() +
- GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness()) ) ;
+ { gpos.SetY( - GetIPtoCrystalSurface() ) ;
}
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) ) ;
+ { // it is a CPV
+ gpos.SetY(- GetIPtoUpperCPVsurface() ) ;
}
- Float_t Phi = GetPHOSAngle( tmpPHOS->GetPHOSMod()) ;
- Double_t const RADDEG = 180.0 / kPI ;
- Float_t rPhi = Phi / RADDEG ;
+ Float_t phi = GetPHOSAngle( tmpPHOS->GetPHOSMod()) ;
+ Double_t const kRADDEG = 180.0 / kPI ;
+ Float_t rphi = phi / kRADDEG ;
- TRotation Rot ;
- Rot.RotateZ(-rPhi) ; // a rotation around Z by angle
+ 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
+ TRotation dummy = rot.Invert() ; // to transform from original frame to rotate frame
+ gpos.Transform(rot) ; // rotate the baby
}
//____________________________________________________________________________
-void AliPHOSGeometry::Init(void)
+void AliPHOSGeometry::ImpactOnEmc(const Double_t theta, const Double_t phi, Int_t & ModuleNumber, Double_t & z, Double_t & x) const
{
- 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() ;
+ // calculates the impact coordinates on PHOS of a neutral particle
+ // emitted in the direction theta and phi in the ALICE global coordinate system
+
+ // searches for the PHOS EMC module
+ ModuleNumber = 0 ;
+ Double_t tm, tM, pm, pM ;
+ Int_t index = 1 ;
+ while ( ModuleNumber == 0 && index <= GetNModules() ) {
+ EmcModuleCoverage(index, tm, tM, pm, pM) ;
+ if ( (theta >= tm && theta <= tM) && (phi >= pm && phi <= pM ) )
+ ModuleNumber = index ;
+ index++ ;
+ }
+ if ( ModuleNumber != 0 ) {
+ Float_t phi0 = GetPHOSAngle(ModuleNumber) * (TMath::Pi() / 180.) + 1.5 * TMath::Pi() ;
+ Float_t y0 = GetIPtoCrystalSurface() ;
+ Double_t angle = phi - phi0;
+ x = y0 * TMath::Tan(angle) ;
+ angle = theta - TMath::Pi() / 2 ;
+ z = y0 * TMath::Tan(angle) ;
}
- else {
- fInit = kFALSE ;
- cout << "PHOS Geometry setup: option not defined " << fName << endl ;
- }
}
-//____________________________________________________________________________
-void AliPHOSGeometry::InitPHOS(void)
+Bool_t AliPHOSGeometry::Impact(const TParticle * particle) const
{
- // 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] ;
-
+ Bool_t In=kFALSE;
+ Int_t ModuleNumber=0;
+ Double_t z,x;
+ ImpactOnEmc(particle->Theta(),particle->Phi(),ModuleNumber,z,x);
+ if(ModuleNumber) In=kTRUE;
+ else In=kFALSE;
+ return In;
}
//____________________________________________________________________________
-void AliPHOSGeometry::InitPPSD(void)
+Bool_t AliPHOSGeometry::RelToAbsNumbering(const Int_t * relid, Int_t & AbsId) const
{
- // 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 ;
+ // Converts the relative numbering into the absolute numbering
+ // EMCA crystals:
+ // AbsId = from 1 to fNModules * fNPhi * fNZ
+ // CPV pad:
+ // AbsId = from N(total PHOS crystals) + 1
+ // to NCPVModules * fNumberOfCPVPadsPhi * fNumberOfCPVPadsZ
- fIPtoTopLidDistance = fIPtoOuterCoverDistance - fPPSDBoxSize[1] - 1. ;
+ Bool_t rv = kTRUE ;
-}
-
-//____________________________________________________________________________
-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 ;
+ if ( relid[1] == 0 ) { // it is a Phos crystal
+ AbsId =
+ ( relid[0] - 1 ) * GetNPhi() * GetNZ() // the offset of PHOS modules
+ + ( relid[2] - 1 ) * GetNZ() // the offset along phi
+ + relid[3] ; // the offset along z
}
- 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
- }
+ else { // it is a CPV pad
+ AbsId = GetNPhi() * GetNZ() * GetNModules() // the offset to separate EMCA crystals from CPV pads
+ + ( relid[0] - 1 ) * GetNumberOfCPVPadsPhi() * GetNumberOfCPVPadsZ() // the pads offset of PHOS modules
+ + ( relid[2] - 1 ) * GetNumberOfCPVPadsZ() // the pads offset of a CPV row
+ + relid[3] ; // the column number
}
-
+
return rv ;
}
//____________________________________________________________________________
-void AliPHOSGeometry::RelPosInAlice(const Int_t Id, TVector3 & pos )
+void AliPHOSGeometry::RelPosInAlice(const Int_t id, TVector3 & pos ) const
{
- if (Id > 0) {
-
- Int_t RelId[4] ;
-
- AbsToRelNumbering(Id , RelId) ;
-
- Int_t PHOSModule = RelId[0] ;
-
+ // Converts the absolute numbering into the global ALICE coordinate system
- 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 ;
+
+ Int_t relid[4] ;
+
+ AbsToRelNumbering(id , relid) ;
+
+ Int_t phosmodule = relid[0] ;
+
+ Float_t y0 = 0 ;
+
+ if ( relid[1] == 0 ) // it is a PbW04 crystal
+ y0 = - GetIPtoCrystalSurface() ;
+ else
+ y0 = - GetIPtoUpperCPVsurface() ;
- 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.);
- }
+ Float_t x, z ;
+ RelPosInModule(relid, x, z) ;
+
+ pos.SetX(x) ;
+ pos.SetZ(z) ;
+ pos.SetY(y0) ;
+
+ Float_t phi = GetPHOSAngle( phosmodule) ;
+ Double_t const kRADDEG = 180.0 / kPI ;
+ Float_t rphi = phi / kRADDEG ;
+
+ 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
}
//____________________________________________________________________________
-void AliPHOSGeometry::RelPosInModule(const Int_t * RelId, Float_t & x, Float_t & z)
+void AliPHOSGeometry::RelPosInModule(const Int_t * relid, Float_t & x, Float_t & z) const
{
- 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
- }
-}
+ // Converts the relative numbering into the local PHOS-module (x, z) coordinates
+ // Note: sign of z differs from that in the previous version (Yu.Kharlov, 12 Oct 2000)
+
+ Int_t row = relid[2] ; //offset along x axis
+ Int_t column = relid[3] ; //offset along z axis
-//____________________________________________________________________________
-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 ;
- }
+ if ( relid[1] == 0 ) { // its a PbW04 crystal
+ x = - ( GetNPhi()/2. - row + 0.5 ) * GetCellStep() ; // position of Xtal with respect
+ z = ( GetNZ() /2. - column + 0.5 ) * GetCellStep() ; // of center of PHOS module
+ }
+ else {
+ x = - ( GetNumberOfCPVPadsPhi()/2. - row - 0.5 ) * GetPadSizePhi() ; // position of pad with respect
+ z = ( GetNumberOfCPVPadsZ() /2. - column - 0.5 ) * GetPadSizeZ() ; // of center of PHOS module
+ }
}
-
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff