X-Git-Url: http://git.uio.no/git/?a=blobdiff_plain;f=PHOS%2FAliPHOSGeometry.cxx;h=24c9d9c5fbb8b8f972dc5fe6acb4bbf02744ac99;hb=395f4eea11e7890cd18810575e8224eb17e8bed2;hp=d30528d30d216b24f189c9da2128edbaeac16002;hpb=cf0c2bc12100f90704f8620c8d9e973374cff3bb;p=u%2Fmrichter%2FAliRoot.git diff --git a/PHOS/AliPHOSGeometry.cxx b/PHOS/AliPHOSGeometry.cxx index d30528d30d2..24c9d9c5fbb 100644 --- a/PHOS/AliPHOSGeometry.cxx +++ b/PHOS/AliPHOSGeometry.cxx @@ -17,81 +17,199 @@ //_________________________________________________________________________ // Geometry class for PHOS : singleton -// The EMC modules are parametrized so that any configuration can be easily implemented -// The title is used to identify the type of CPV used. So far only PPSD implemented +// 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) +//*-- Author: Yves Schutz (SUBATECH) & Dmitri Peressounko (RRC "KI" & SUBATECH) // --- ROOT system --- #include "TVector3.h" #include "TRotation.h" +#include "TParticle.h" // --- Standard library --- -#include - // --- AliRoot header files --- #include "AliPHOSGeometry.h" -#include "AliPHOSPpsdRecPoint.h" -#include "AliConst.h" +#include "AliPHOSEMCAGeometry.h" +#include "AliPHOSRecPoint.h" ClassImp(AliPHOSGeometry) ; +// these initialisations are needed for a singleton AliPHOSGeometry * AliPHOSGeometry::fgGeom = 0 ; +Bool_t AliPHOSGeometry::fgInit = kFALSE ; + +//____________________________________________________________________________ +AliPHOSGeometry::AliPHOSGeometry() { + // default ctor + // must be kept public for root persistency purposes, but should never be called by the outside world + fPHOSAngle = 0 ; + fGeometryEMCA = 0 ; + fGeometrySUPP = 0 ; + fGeometryCPV = 0 ; + fgGeom = 0 ; + fRotMatrixArray = 0 ; +} //____________________________________________________________________________ AliPHOSGeometry::~AliPHOSGeometry(void) { // dtor - fRotMatrixArray->Delete() ; - delete fRotMatrixArray ; + 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) + + TString test(GetName()) ; + if (test != "IHEP" ) { + Fatal("Init", "%s is not a known geometry (choose among IHEP)", test.Data() ) ; + } + + 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] - (emcParams[1]-emcParams[0])* + fGeometryCPV->GetCPVBoxSize(1)/2/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( fgGeom ) ; +} + +//____________________________________________________________________________ +AliPHOSGeometry * AliPHOSGeometry::GetInstance(const Text_t* name, const Text_t* title) +{ + // 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 ) + ::Error("GetInstance", "Current geometry is %s. You cannot call %s", fgGeom->GetName(), name) ; + 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 / TMath::Pi() ; + Float_t pphi = 2 * TMath::ATan( GetOuterBoxSize(0) / ( 2.0 * GetIPtoUpperCPVsurface() ) ) ; + pphi *= kRADDEG ; + if (pphi > fAngle){ + Error("SetPHOSAngles", "PHOS modules overlap!\n pphi = %f fAngle = %f", pphi, fAngle); - delete fPHOSAngle ; + } + 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) +Bool_t AliPHOSGeometry::AbsToRelNumbering(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 - // = 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 + // = -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 ; - 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 - + if ( phosmodulenumber > GetNModules() ) { // it is a CPV 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() ) ; + 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[2] = (Int_t)TMath::Ceil( id / GetNZ() ) ; + relid[3] = (Int_t)( id - ( relid[2] - 1 ) * GetNZ() ) ; } return rv ; } + //____________________________________________________________________________ -void AliPHOSGeometry::EmcModuleCoverage(const Int_t mod, Double_t & tm, Double_t & tM, Double_t & pm, Double_t & pM, Option_t * opt) +void AliPHOSGeometry::EmcModuleCoverage(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 a EMC module + // calculates the angular coverage in theta and phi of one EMC (=PHOS) module Double_t conv ; if ( opt == Radian() ) @@ -99,22 +217,23 @@ void AliPHOSGeometry::EmcModuleCoverage(const Int_t mod, Double_t & tm, Double_t else if ( opt == Degre() ) conv = 180. / TMath::Pi() ; else { - cout << " AliPHOSGeometry::EmcXtalCoverage : " << opt << " unknown option; result in radian " << endl ; + Warning("EmcModuleCoverage", "%s unknown option; result in radian", opt) ; conv = 1. ; } - Float_t phi = GetPHOSAngle(mod) * (TMath::Pi() / 180.) ; - Float_t y0 = GetIPtoOuterCoverDistance() + GetUpperPlateThickness() - + GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness() ; - - Double_t angle = TMath::ATan( GetCrystalSize(0)*GetNPhi() / (2 * y0) ) ; - phi = phi + 1.5 * TMath::Pi() ; // to follow the convention of the particle generator(PHOS is between 230 and 310 deg.) + 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( GetCrystalSize(2)*GetNZ() / (2 * y0) ) ; + 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 ; @@ -123,9 +242,9 @@ void AliPHOSGeometry::EmcModuleCoverage(const Int_t mod, Double_t & tm, Double_t } //____________________________________________________________________________ -void AliPHOSGeometry::EmcXtalCoverage(Double_t & theta, Double_t & phi, Option_t * opt) +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 module + // calculates the angular coverage in theta and phi of a single crystal in a EMC(=PHOS) module Double_t conv ; if ( opt == Radian() ) @@ -133,48 +252,20 @@ void AliPHOSGeometry::EmcXtalCoverage(Double_t & theta, Double_t & phi, Option_t else if ( opt == Degre() ) conv = 180. / TMath::Pi() ; else { - cout << " AliPHOSGeometry::EmcXtalCoverage : " << opt << " unknown option; result in radian " << endl ; + Warning("EmcXtalCoverage", "%s unknown option; result in radian", opt) ; conv = 1. ; } - Float_t y0 = GetIPtoOuterCoverDistance() + GetUpperPlateThickness() - + GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness() ; + Float_t y0 = GetIPtoCrystalSurface() ; theta = 2 * TMath::ATan( GetCrystalSize(2) / (2 * y0) ) * conv ; phi = 2 * TMath::ATan( GetCrystalSize(0) / (2 * y0) ) * conv ; } //____________________________________________________________________________ -void AliPHOSGeometry::ImpactOnEmc(const Double_t theta, const Double_t phi, Int_t & ModuleNumber, Double_t & z, Double_t & x) -{ - // calculates the impact coordinates of a neutral particle - // emitted in direction theta and phi in ALICE - - // 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 = GetIPtoOuterCoverDistance() + GetUpperPlateThickness() - + GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness() ; - Double_t angle = phi - phi0; - x = y0 * TMath::Tan(angle) ; - angle = theta - TMath::Pi() / 2 ; - z = y0 * TMath::Tan(angle) ; - } -} - -//____________________________________________________________________________ -void AliPHOSGeometry::GetGlobal(const AliRecPoint* RecPoint, TVector3 & gpos, TMatrix & gmat) +void AliPHOSGeometry::GetGlobal(const AliRecPoint* RecPoint, TVector3 & gpos, TMatrix & /*gmat*/) const { - // Calculates the ALICE global coordinates of a RecPoint and the error matrix + // Calculates the coordinates of a RecPoint and the error matrix in the ALICE global coordinate system AliPHOSRecPoint * tmpPHOS = (AliPHOSRecPoint *) RecPoint ; TVector3 localposition ; @@ -183,25 +274,16 @@ void AliPHOSGeometry::GetGlobal(const AliRecPoint* RecPoint, TVector3 & gpos, TM 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 kRADDEG = 180.0 / kPI ; + Double_t const kRADDEG = 180.0 / TMath::Pi() ; Float_t rphi = phi / kRADDEG ; TRotation rot ; @@ -213,9 +295,9 @@ void AliPHOSGeometry::GetGlobal(const AliRecPoint* RecPoint, TVector3 & gpos, TM } //____________________________________________________________________________ -void AliPHOSGeometry::GetGlobal(const AliRecPoint* RecPoint, TVector3 & gpos) +void AliPHOSGeometry::GetGlobal(const AliRecPoint* RecPoint, TVector3 & gpos) const { - // Calculates the ALICE global coordinates of a RecPoint + // Calculates the coordinates of a RecPoint in the ALICE global coordinate system AliPHOSRecPoint * tmpPHOS = (AliPHOSRecPoint *) RecPoint ; TVector3 localposition ; @@ -223,24 +305,15 @@ void AliPHOSGeometry::GetGlobal(const AliRecPoint* RecPoint, TVector3 & 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 kRADDEG = 180.0 / kPI ; + Double_t const kRADDEG = 180.0 / TMath::Pi() ; Float_t rphi = phi / kRADDEG ; TRotation rot ; @@ -251,306 +324,180 @@ void AliPHOSGeometry::GetGlobal(const AliRecPoint* RecPoint, TVector3 & gpos) } //____________________________________________________________________________ -void AliPHOSGeometry::Init(void) +void AliPHOSGeometry::ImpactOnEmc(Double_t theta, Double_t phi, Int_t & moduleNumber, Double_t & z, Double_t & x) const { - // Initializes the PHOS parameters - - fRotMatrixArray = new TObjArray(fNModules) ; + // 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 - 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() ; + 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) +void AliPHOSGeometry::ImpactOnEmc(TVector3 vec, Int_t & moduleNumber, Double_t & z, Double_t & x) const { - // Initializes the EMC parameters - - fNPhi = 64 ; - fNZ = 64 ; - fNModules = 5 ; - - fPHOSAngle = new Float_t[fNModules] ; - Int_t index ; - for ( index = 0; index < fNModules; index++ ) - fPHOSAngle[index] = 0.0 ; // Module position angles are set in CreateGeometry() - - fXtlSize[0] = 2.2 ; - fXtlSize[1] = 18.0 ; - fXtlSize[2] = 2.2 ; - - // all these numbers coming next are subject to changes + // 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 - 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] = 1.71 ; //Values given by Odd Harald feb 2000 - fPinDiodeSize[1] = 0.0280 ; // 0.0280 is the depth of active layer in the silicon - fPinDiodeSize[2] = 1.61 ; - - 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] ; + TParticle p ; + p.SetMomentum(vec.X(), vec.Y(), vec.Z(), 0.) ; + ImpactOnEmc(p, moduleNumber, z, x) ; } //____________________________________________________________________________ -void AliPHOSGeometry::InitPPSD(void) +void AliPHOSGeometry::ImpactOnEmc(TParticle p, Int_t & moduleNumber, Double_t & z, Double_t & x) const { - // Initializes the PPSD parameters - - fAnodeThickness = 0.0009 ; - fAvalancheGap = 0.01 ; - fCathodeThickness = 0.0009 ; - fCompositeThickness = 0.3 ; - fConversionGap = 0.6 ; - 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 ; + // calculates the impact coordinates on PHOS of a neutral particle + // emitted in the direction theta and phi in the ALICE global coordinate system - fIPtoTopLidDistance = fIPtoOuterCoverDistance - fPPSDBoxSize[1] - 1. ; - -} + // searches for the PHOS EMC module + Double_t theta = p.Theta() ; + Double_t phi = p.Phi() ; -//____________________________________________________________________________ -AliPHOSGeometry * AliPHOSGeometry::GetInstance() -{ - // Returns the pointer of the unique instance - - return (AliPHOSGeometry *) fgGeom ; + ImpactOnEmc(theta, phi, moduleNumber, z, x) ; } //____________________________________________________________________________ -AliPHOSGeometry * AliPHOSGeometry::GetInstance(const Text_t* name, const Text_t* title) +Bool_t AliPHOSGeometry::Impact(const TParticle * particle) const { - // Returns the pointer of the unique instance - - AliPHOSGeometry * rv = 0 ; - if ( fgGeom == 0 ) { - fgGeom = new AliPHOSGeometry(name, title) ; - rv = (AliPHOSGeometry * ) fgGeom ; - } - else { - if ( strcmp(fgGeom->GetName(), name) != 0 ) { - cout << "AliPHOSGeometry : current geometry is " << fgGeom->GetName() << endl - << " you cannot call " << name << endl ; - } - else - rv = (AliPHOSGeometry *) fgGeom ; - } - return rv ; + // Tells if a particle enters PHOS + 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; } //____________________________________________________________________________ -Bool_t AliPHOSGeometry::RelToAbsNumbering(const Int_t * relid, Int_t & AbsId) +Bool_t AliPHOSGeometry::RelToAbsNumbering(const Int_t * relid, Int_t & AbsId) const { // Converts the relative numbering into the absolute numbering - // AbsId = 1:fNModules * fNPhi * fNZ -> PbWO4 - // AbsId = 1:fNModules * 2 * (fNumberOfModulesPhi * fNumberOfModulesZ) * fNumberOfPadsPhi * fNumberOfPadsZ -> PPSD + // EMCA crystals: + // AbsId = from 1 to fNModules * fNPhi * fNZ + // CPV pad: + // AbsId = from N(total PHOS crystals) + 1 + // to NCPVModules * fNumberOfCPVPadsPhi * fNumberOfCPVPadsZ 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 - } + + 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 { // 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(Int_t id, TVector3 & pos ) const { - // Converts the absolute numbering into the global ALICE coordinates + // Converts the absolute numbering into the global ALICE coordinate system - if (id > 0) { - - 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 = -(GetIPtoOuterCoverDistance() + GetUpperPlateThickness() - + GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness()) ; - } - if ( relid[1] > 0 ) { // its a PPSD pad - if ( relid[1] > GetNumberOfModulesPhi() * GetNumberOfModulesZ() ) // its an bottom module - { - y0 = -( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() / 2.0) ; - } - else // its an upper module - y0 = -( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() - GetLeadToMicro2Gap() - - GetLeadConverterThickness() - GetMicro1ToLeadGap() - GetMicromegas1Thickness() / 2.0) ; - } - - Float_t x, z ; - RelPosInModule(relid, x, z) ; - - pos.SetX(x) ; - pos.SetZ(z) ; - pos.SetY( TMath::Sqrt(x*x + z*z + y0*y0) ) ; - - - - Float_t phi = GetPHOSAngle( phosmodule) ; - Double_t const kRADDEG = 180.0 / kPI ; - Float_t rphi = phi / kRADDEG ; + + 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 / TMath::Pi() ; + 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 { // 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 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 - } -} + Int_t row = relid[2] ; //offset along x axis + Int_t column = relid[3] ; //offset along z axis -//____________________________________________________________________________ -void AliPHOSGeometry::SetPHOSAngles() -{ - // Calculates the position in ALICE of the PHOS modules - Double_t const kRADDEG = 180.0 / kPI ; - Float_t pphi = TMath::ATan( fOuterBoxSize[0] / ( 2.0 * fIPtoOuterCoverDistance ) ) ; - pphi *= kRADDEG ; - - 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 + } } //____________________________________________________________________________ -void AliPHOSGeometry::SetLeadConverterThickness(Float_t e) + +TVector3 AliPHOSGeometry::GetCpvModuleCenter(Int_t module) const { - // should ultimately disappear - - cout << " AliPHOSGeometry WARNING : You have changed LeadConverterThickness from " - << fLeadConverterThickness << " to " << e << endl ; + // Returns a position of the center of the CPV module + Float_t rCPV = GetIPtoCPVDistance(); + Float_t angle = GetPHOSAngle(module); // (40,20,0,-20,-40) degrees + angle *= TMath::Pi()/180; + angle += 3*TMath::Pi()/2.; + return TVector3(rCPV*TMath::Cos(angle), rCPV*TMath::Sin(angle), 0.); +} - fLeadConverterThickness = e ; +//____________________________________________________________________________ + +TVector3 AliPHOSGeometry::Global2LocalCpv(TVector3 globalPosition, Int_t module) const +{ + // Transforms a global position of the CPV point to the local coordinate system + Float_t angle = GetPHOSAngle(module); // (40,20,0,-20,-40) degrees + angle *= TMath::Pi()/180; + angle += 3*TMath::Pi()/2.; + globalPosition.RotateZ(-angle); + return TVector3(globalPosition.Y(),globalPosition.X(),globalPosition.Z()); }