#include "TVector3.h"
#include "TRotation.h"
-#include "TFolder.h"
-#include "TROOT.h"
+#include "TParticle.h"
// --- Standard library ---
-#include <iostream.h>
-#include <stdlib.h>
-
// --- AliRoot header files ---
#include "AliPHOSGeometry.h"
#include "AliPHOSEMCAGeometry.h"
#include "AliPHOSRecPoint.h"
-#include "AliConst.h"
ClassImp(AliPHOSGeometry) ;
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)
{
{
// 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
+ TString test(GetName()) ;
+ if (test != "IHEP" ) {
+ Fatal("Init", "%s is not a known geometry (choose among IHEP)", test.Data() ) ;
+ }
+
fgInit = kTRUE ;
fNModules = 5;
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. ;
}
-
//____________________________________________________________________________
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 ;
}
{
// Calculates the position of the PHOS modules in ALICE global coordinate system
- 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 ;
+ Error("SetPHOSAngles", "PHOS modules overlap!\n pphi = %f fAngle = %f", pphi, fAngle);
}
pphi = fAngle;
}
//____________________________________________________________________________
-Bool_t AliPHOSGeometry::AbsToRelNumbering(const Int_t AbsId, Int_t * relid) const
+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
}
//____________________________________________________________________________
-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::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 one EMC (=PHOS) module
else if ( opt == Degre() )
conv = 180. / TMath::Pi() ;
else {
- cout << "<I> AliPHOSGeometry::EmcXtalCoverage : " << opt << " unknown option; result in radian " << endl ;
+ Warning("EmcModuleCoverage", "%s unknown option; result in radian", opt) ;
conv = 1. ;
}
else if ( opt == Degre() )
conv = 180. / TMath::Pi() ;
else {
- cout << "<I> AliPHOSGeometry::EmcXtalCoverage : " << opt << " unknown option; result in radian " << endl ;
+ Warning("EmcXtalCoverage", "%s unknown option; result in radian", opt) ;
conv = 1. ;
}
//____________________________________________________________________________
-void AliPHOSGeometry::GetGlobal(const AliRecPoint* RecPoint, TVector3 & gpos, TMatrix & gmat) const
+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
}
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 ;
}
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 ;
}
//____________________________________________________________________________
-void AliPHOSGeometry::ImpactOnEmc(const Double_t theta, const Double_t phi, Int_t & ModuleNumber, Double_t & z, Double_t & x) const
+void AliPHOSGeometry::ImpactOnEmc(Double_t theta, 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 ;
+
+ moduleNumber = 0 ;
Double_t tm, tM, pm, pM ;
Int_t index = 1 ;
- while ( ModuleNumber == 0 && index <= GetNModules() ) {
+ while ( moduleNumber == 0 && index <= GetNModules() ) {
EmcModuleCoverage(index, tm, tM, pm, pM) ;
if ( (theta >= tm && theta <= tM) && (phi >= pm && phi <= pM ) )
- ModuleNumber = index ;
+ moduleNumber = index ;
index++ ;
}
- if ( ModuleNumber != 0 ) {
- Float_t phi0 = GetPHOSAngle(ModuleNumber) * (TMath::Pi() / 180.) + 1.5 * TMath::Pi() ;
+ 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) ;
}
}
+//____________________________________________________________________________
+void AliPHOSGeometry::ImpactOnEmc(TVector3 vec, 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
+
+ TParticle p ;
+ p.SetMomentum(vec.X(), vec.Y(), vec.Z(), 0.) ;
+
+ ImpactOnEmc(p, moduleNumber, z, x) ;
+}
+
+//____________________________________________________________________________
+void AliPHOSGeometry::ImpactOnEmc(TParticle p, 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
+ Double_t theta = p.Theta() ;
+ Double_t phi = p.Phi() ;
+
+ ImpactOnEmc(theta, phi, moduleNumber, z, x) ;
+}
+
+//____________________________________________________________________________
+Bool_t AliPHOSGeometry::Impact(const TParticle * particle) const
+{
+ // 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) const
{
//____________________________________________________________________________
-void AliPHOSGeometry::RelPosInAlice(const Int_t id, TVector3 & pos ) const
+void AliPHOSGeometry::RelPosInAlice(Int_t id, TVector3 & pos ) const
{
// Converts the absolute numbering into the global ALICE coordinate system
pos.SetY(y0) ;
Float_t phi = GetPHOSAngle( phosmodule) ;
- Double_t const kRADDEG = 180.0 / kPI ;
+ Double_t const kRADDEG = 180.0 / TMath::Pi() ;
Float_t rphi = phi / kRADDEG ;
TRotation rot ;
pos.Transform(rot) ; // rotate the baby
}
+//____________________________________________________________________________
+void AliPHOSGeometry::RelPosToAbsId(const Int_t module, const Double_t x, const Double_t z, Int_t & AbsId) const
+{
+ // converts local PHOS-module (x, z) coordinates to absId
+ Int_t relid[4] ;
+ relid[0] = module ;
+ relid[1] = 0 ;
+ relid[2] = static_cast<Int_t>(TMath::Ceil( x/ GetCellStep() + GetNPhi() / 2.) );
+ relid[3] = static_cast<Int_t>(TMath::Ceil(-z/ GetCellStep() + GetNZ() / 2.) ) ;
+
+ RelToAbsNumbering(relid,AbsId) ;
+}
+
//____________________________________________________________________________
void AliPHOSGeometry::RelPosInModule(const Int_t * relid, Float_t & x, Float_t & z) const
{
Int_t column = relid[3] ; //offset along z axis
- if ( relid[1] == 0 ) { // its a PbW04 crystal
- x = - ( GetNPhi()/2. - row + 0.5 ) * GetCrystalSize(0) ; // position of Xtal with respect
- z = ( GetNZ() /2. - column + 0.5 ) * GetCrystalSize(2) ; // of center of PHOS module
+ 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
+ z = - ( GetNumberOfCPVPadsZ() /2. - column - 0.5 ) * GetPadSizeZ() ; // of center of PHOS module
}
}
+
+//____________________________________________________________________________
+
+TVector3 AliPHOSGeometry::GetModuleCenter(char *det, Int_t module) const
+{
+ // Returns a position of the center of the CPV or EMC module
+ Float_t rDet = 0.;
+ if (strcmp(det,"CPV") == 0) rDet = GetIPtoCPVDistance ();
+ else if (strcmp(det,"EMC") == 0) rDet = GetIPtoCrystalSurface();
+ else Fatal("GetModuleCenter","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.;
+ return TVector3(rDet*TMath::Cos(angle), rDet*TMath::Sin(angle), 0.);
+}
+
+//____________________________________________________________________________
+
+TVector3 AliPHOSGeometry::Global2Local(TVector3 globalPosition, Int_t module) const
+{
+ // Transforms a global position of the rec.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());
+}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff