// can be easily implemented
// The title is used to identify the version of CPV used.
//
-//*-- Author: Yves Schutz (SUBATECH) & Dmitri Peressounko (RRC "KI" & SUBATECH)
+// -- Author: Yves Schutz (SUBATECH) & Dmitri Peressounko (RRC "KI" & SUBATECH)
// --- ROOT system ---
#include "TVector3.h"
#include "TRotation.h"
-#include "TFolder.h"
-#include "TROOT.h"
+#include "TParticle.h"
+#include <TGeoManager.h>
+#include <TGeoMatrix.h>
// --- Standard library ---
-#include <iostream.h>
-#include <stdlib.h>
-
// --- AliRoot header files ---
-
+#include "AliLog.h"
#include "AliPHOSGeometry.h"
#include "AliPHOSEMCAGeometry.h"
#include "AliPHOSRecPoint.h"
-#include "AliConst.h"
-ClassImp(AliPHOSGeometry) ;
+ClassImp(AliPHOSGeometry)
// these initialisations are needed for a singleton
-AliPHOSGeometry * AliPHOSGeometry::fgGeom = 0 ;
-Bool_t AliPHOSGeometry::fgInit = kFALSE ;
+AliPHOSGeometry * AliPHOSGeometry::fgGeom = 0 ;
+Bool_t AliPHOSGeometry::fgInit = kFALSE ;
+
+//____________________________________________________________________________
+AliPHOSGeometry::AliPHOSGeometry() :
+ AliPHOSGeoUtils(),
+ fAngle(0.f),
+ fPHOSAngle(0),
+ fIPtoUpperCPVsurface(0),
+ fCrystalShift(0),
+ fCryCellShift(0),
+ fRotMatrixArray(0)
+{
+ // default ctor
+ // must be kept public for root persistency purposes, but should never be called by the outside world
+ fgGeom = 0 ;
+
+ fPHOSParams[0] = 0.;
+ fPHOSParams[1] = 0.;
+ fPHOSParams[2] = 0.;
+ fPHOSParams[3] = 0.;
+}
+
+//____________________________________________________________________________
+AliPHOSGeometry::AliPHOSGeometry(const AliPHOSGeometry & rhs)
+ : AliPHOSGeoUtils(rhs),
+ fAngle(rhs.fAngle),
+ fPHOSAngle(0),
+ fIPtoUpperCPVsurface(rhs.fIPtoUpperCPVsurface),
+ fCrystalShift(rhs.fCrystalShift),
+ fCryCellShift(rhs.fCryCellShift),
+ fRotMatrixArray(0)
+{
+ Fatal("cpy ctor", "not implemented") ;
+}
+
+//____________________________________________________________________________
+AliPHOSGeometry::AliPHOSGeometry(const Text_t* name, const Text_t* title)
+ : AliPHOSGeoUtils(name, title),
+ fAngle(0.f),
+ fPHOSAngle(0),
+ fIPtoUpperCPVsurface(0),
+ fCrystalShift(0),
+ fCryCellShift(0),
+ fRotMatrixArray(0)
+{
+ // ctor only for internal usage (singleton)
+ Init() ;
+ fgGeom = this;
+}
//____________________________________________________________________________
AliPHOSGeometry::~AliPHOSGeometry(void)
if (fRotMatrixArray) fRotMatrixArray->Delete() ;
if (fRotMatrixArray) delete fRotMatrixArray ;
- if (fPHOSAngle ) delete fPHOSAngle ;
+ 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 qnd one PHOS module with the Subatche Pre-Shower
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() ;
+ const 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] ) ;
+ (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) ;
-
+
+ //calculate offset to crystal surface
+ const Float_t * inthermo = fGeometryEMCA->GetInnerThermoHalfSize() ;
+ const Float_t * strip = fGeometryEMCA->GetStripHalfSize() ;
+ const Float_t * splate = fGeometryEMCA->GetSupportPlateHalfSize();
+ const Float_t * crystal = fGeometryEMCA->GetCrystalHalfSize() ;
+ const Float_t * pin = fGeometryEMCA->GetAPDHalfSize() ;
+ const Float_t * preamp = fGeometryEMCA->GetPreampHalfSize() ;
+ fCrystalShift=-inthermo[1]+strip[1]+splate[1]+crystal[1]-fGeometryEMCA->GetAirGapLed()/2.+pin[1]+preamp[1] ;
+ fCryCellShift=crystal[1]-(fGeometryEMCA->GetAirGapLed()-2*pin[1]-2*preamp[1])/2;
+
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) ;
-
- // post the geometry into the appropriate folder
- TFolder * folder = (TFolder*)gROOT->FindObjectAny("YSAlice/WhiteBoard/Geometry/PHOS");
- if ( !folder ) {
- cerr << "ERROR: AliPHOSGeometry::Init -> No WhiteBoard/Geometry/PHOS found !" << endl ;
- abort();
- } else {
- folder->SetOwner() ;
- folder->Add(this) ;
+
+ // Geometry parameters are calculated
+
+ SetPHOSAngles();
+ Double_t const kRADDEG = 180.0 / TMath::Pi() ;
+ Float_t r = GetIPtoOuterCoverDistance() + fPHOSParams[3] - GetCPVBoxSize(1) ;
+ for (Int_t iModule=0; iModule<fNModules; iModule++) {
+ fModuleCenter[iModule][0] = r * TMath::Sin(fPHOSAngle[iModule] / kRADDEG );
+ fModuleCenter[iModule][1] =-r * TMath::Cos(fPHOSAngle[iModule] / kRADDEG );
+ fModuleCenter[iModule][2] = 0.;
+
+ fModuleAngle[iModule][0][0] = 90;
+ fModuleAngle[iModule][0][1] = fPHOSAngle[iModule];
+ fModuleAngle[iModule][1][0] = 0;
+ fModuleAngle[iModule][1][1] = 0;
+ fModuleAngle[iModule][2][0] = 90;
+ fModuleAngle[iModule][2][1] = 270 + fPHOSAngle[iModule];
}
-
-}
+}
//____________________________________________________________________________
AliPHOSGeometry * AliPHOSGeometry::GetInstance()
{
// Returns the pointer of the unique instance; singleton specific
- return (AliPHOSGeometry *) fgGeom ;
+ return static_cast<AliPHOSGeometry *>( fgGeom ) ;
}
//____________________________________________________________________________
}
}
else {
- if ( strcmp(fgGeom->GetName(), name) != 0 ) {
- cout << "AliPHOSGeometry <E> : current geometry is " << fgGeom->GetName() << endl
- << " you cannot call " << name << endl ;
- }
+ if ( strcmp(fgGeom->GetName(), name) != 0 )
+ ::Error("GetInstance", "Current geometry is %s. You cannot call %s",
+ fgGeom->GetName(), name) ;
else
rv = (AliPHOSGeometry *) fgGeom ;
}
void AliPHOSGeometry::SetPHOSAngles()
{
// Calculates the position of the PHOS modules in ALICE global coordinate system
+ // in ideal geometry
- Double_t const kRADDEG = 180.0 / kPI ;
+ Double_t const kRADDEG = 180.0 / TMath::Pi() ;
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 ;
+ AliError(Form("PHOS modules overlap!\n pphi = %f fAngle = %f",
+ pphi, fAngle));
}
pphi = fAngle;
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 ;
-
- Int_t phosmodulenumber = (Int_t)TMath:: Ceil( id / GetNCristalsInModule() ) ;
-
- 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 { // it is a PW04 crystal
-
- 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::EmcModuleCoverage(const Int_t mod, Double_t & tm, Double_t & tM, Double_t & pm, Double_t & pM, Option_t * opt) const
+void AliPHOSGeometry::GetGlobal(const AliRecPoint* , TVector3 & ) 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 ;
-
+ AliFatal(Form("Please use GetGlobalPHOS(recPoint,gpos) instead of GetGlobal!"));
}
-//____________________________________________________________________________
-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
+void AliPHOSGeometry::GetGlobalPHOS(const AliPHOSRecPoint* recPoint, TVector3 & gpos) const
{
// Calculates the coordinates of a RecPoint and the error matrix in the ALICE global coordinate system
- AliPHOSRecPoint * tmpPHOS = (AliPHOSRecPoint *) RecPoint ;
+ const AliPHOSRecPoint * tmpPHOS = recPoint ;
TVector3 localposition ;
tmpPHOS->GetLocalPosition(gpos) ;
-
- if ( tmpPHOS->IsEmc() ) // it is a EMC crystal
- { gpos.SetY( - GetIPtoCrystalSurface()) ;
-
- }
- else
- { // it is a CPV
- gpos.SetY(- GetIPtoUpperCPVsurface() ) ;
- }
-
- 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 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) const
-{
- // Calculates the coordinates of a RecPoint in the ALICE global coordinate system
-
- AliPHOSRecPoint * tmpPHOS = (AliPHOSRecPoint *) RecPoint ;
- TVector3 localposition ;
- tmpPHOS->GetLocalPosition(gpos) ;
-
-
- if ( tmpPHOS->IsEmc() ) // it is a EMC crystal
- { gpos.SetY( - GetIPtoCrystalSurface() ) ;
- }
- else
- { // it is a CPV
- gpos.SetY(- GetIPtoUpperCPVsurface() ) ;
- }
-
- 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 dummy = rot.Invert() ; // to transform from original frame to rotate frame
- gpos.Transform(rot) ; // rotate the baby
-}
-
-//____________________________________________________________________________
-void AliPHOSGeometry::ImpactOnEmc(const Double_t theta, const Double_t phi, Int_t & ModuleNumber, Double_t & z, Double_t & x) const
-{
- // 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 (!gGeoManager){
+ AliFatal("Geo manager not initialized\n");
}
- 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) ;
+ //construct module name
+ char path[100] ;
+ Double_t dy ;
+ if(tmpPHOS->IsEmc()){
+ TString spath="/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1";
+ snprintf(path,spath.Length(),spath.Data(),tmpPHOS->GetPHOSMod()) ;
+// sprintf(path,"/ALIC_1/PHOS_%d",tmpPHOS->GetPHOSMod()) ;
+ dy=fCrystalShift ;
}
-}
-
-//____________________________________________________________________________
-Bool_t AliPHOSGeometry::RelToAbsNumbering(const Int_t * relid, Int_t & AbsId) const
-{
- // 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
-
- Bool_t rv = kTRUE ;
-
- 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{
+ TString spath="/ALIC_1/PHOS_%d/PCPV_1";
+ snprintf(path,spath.Length(),spath.Data(),tmpPHOS->GetPHOSMod()) ;
+ dy= GetCPVBoxSize(1)/2. ; //center of CPV module
}
- 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
+ Double_t pos[3]={gpos.X(),gpos.Y()-dy,gpos.Z()} ;
+ if(tmpPHOS->IsEmc())
+ pos[2]=-pos[2] ; //Opposite z directions in EMC matrix and local frame!!!
+ Double_t posC[3] = {};
+ //now apply possible shifts and rotations
+ if (!gGeoManager->cd(path)){
+ AliFatal("Geo manager can not find path \n");
}
-
- return rv ;
-}
+ TGeoHMatrix *m = gGeoManager->GetCurrentMatrix();
+ if (m){
+ m->LocalToMaster(pos,posC);
+ }
+ else{
+ AliFatal("Geo matrixes are not loaded \n") ;
+ }
+ gpos.SetXYZ(posC[0],posC[1],posC[2]) ;
+}
//____________________________________________________________________________
-void AliPHOSGeometry::RelPosInAlice(const Int_t id, TVector3 & pos ) const
-{
- // Converts the absolute numbering into the global ALICE coordinate system
-
-
- 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() ;
-
- 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) const
+void AliPHOSGeometry::GetModuleCenter(TVector3& center,
+ const char *det,
+ Int_t module) 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 row = relid[2] ; //offset along x axiz
- Int_t column = relid[3] ; //offset along z axiz
-
-
- 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 {
- x = - ( GetNumberOfCPVPadsPhi()/2. - row - 0.5 ) * GetPadSizePhi() ; // position of pad with respect
- z = ( GetNumberOfCPVPadsZ() /2. - column - 0.5 ) * GetPadSizeZ() ; // of center of PHOS module
- }
+ // Returns a position of the center of the CPV or EMC module
+ // in ideal (not misaligned) geometry
+ Float_t rDet = 0.;
+ if (strcmp(det,"CPV") == 0) rDet = GetIPtoCPVDistance ();
+ else if (strcmp(det,"EMC") == 0) rDet = GetIPtoCrystalSurface();
+ else
+ AliFatal(Form("Wrong detector name %s",det));
+
+ Float_t angle = GetPHOSAngle(module); // (40,20,0,-20,-40) degrees
+ angle *= TMath::Pi()/180;
+ angle += 3*TMath::Pi()/2.;
+ center.SetXYZ(rDet*TMath::Cos(angle), rDet*TMath::Sin(angle), 0.);
}
+
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