// 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"
// --- Standard library ---
-#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() :
+ fNModules(0),
+ fAngle(0.f),
+ fPHOSAngle(0),
+ fIPtoUpperCPVsurface(0),
+ fRotMatrixArray(0),
+ fGeometryEMCA(0),
+ fGeometryCPV(0),
+ fGeometrySUPP(0)
+{
+ // default ctor
+ // must be kept public for root persistency purposes, but should never be called by the outside world
+ fgGeom = 0 ;
+}
//____________________________________________________________________________
-AliPHOSGeometry::AliPHOSGeometry(void)
+AliPHOSGeometry::AliPHOSGeometry(const AliPHOSGeometry & rhs)
+ : AliGeometry(rhs),
+ fNModules(rhs.fNModules),
+ fAngle(rhs.fAngle),
+ fPHOSAngle(0),
+ fIPtoUpperCPVsurface(rhs.fIPtoUpperCPVsurface),
+ fRotMatrixArray(0),
+ fGeometryEMCA(0),
+ fGeometryCPV(0),
+ fGeometrySUPP(0)
{
- // 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;
+ Fatal("cpy ctor", "not implemented") ;
}
+
+AliPHOSGeometry::AliPHOSGeometry(const Text_t* name, const Text_t* title)
+ : AliGeometry(name, title),
+ fNModules(0),
+ fAngle(0.f),
+ fPHOSAngle(0),
+ fIPtoUpperCPVsurface(0),
+ fRotMatrixArray(0),
+ fGeometryEMCA(0),
+ fGeometryCPV(0),
+ fGeometrySUPP(0)
+{
+ // ctor only for internal usage (singleton)
+ Init() ;
+}
+
+
//____________________________________________________________________________
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 and one PHOS module with the Subatech Pre-Shower
TString test(GetName()) ;
- if (test != "IHEP" && test != "GPS2" && test != "MIXT") {
- Fatal("Init", "%s is not a known geometry (choose among IHEP, GPS2 and MIXT)", test.Data() ) ;
+ if (test != "IHEP" ) {
+ AliFatal(Form("%s is not a known geometry (choose among IHEP)",
+ test.Data() )) ;
}
fgInit = kTRUE ;
-
+
fNModules = 5;
fAngle = 20;
-
+
fGeometryEMCA = new AliPHOSEMCAGeometry();
fGeometryCPV = new AliPHOSCPVGeometry ();
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. ;
for ( index = 0; index < fNModules; index++ )
fPHOSAngle[index] = 0.0 ; // Module position angles are set in CreateGeometry()
- this->SetPHOSAngles() ;
fRotMatrixArray = new TObjArray(fNModules) ;
-
+
+ // 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];
+ }
+
}
//____________________________________________________________________________
}
else {
if ( strcmp(fgGeom->GetName(), name) != 0 )
- ::Error("GetInstance", "Current geometry is %s. You cannot call %s", fgGeom->GetName(), name) ;
+ ::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){
- Error("SetPHOSAngles", "PHOS modules overlap!\n pphi = %f fAngle = %f", pphi, fAngle);
+ AliError(Form("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 {
- Warning("EmcModuleCoverage", "%s unknown option; result in radian", opt) ;
+ AliWarning(Form("%s unknown option; result in radian", opt)) ;
conv = 1. ;
}
Float_t phi = GetPHOSAngle(mod) * (TMath::Pi() / 180.) ;
Float_t y0 = GetIPtoCrystalSurface() ;
- Float_t x0 = GetCellStep()*GetNPhi() ;
- Float_t z0 = GetCellStep()*GetNZ();
- Double_t angle = TMath::ATan( x0 / y0 / 2 ) ;
+ 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 / 2 ) ;
+ 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 ;
else if ( opt == Degre() )
conv = 180. / TMath::Pi() ;
else {
- Warning("EmcXtalCoverage", "%s unknown option; result in radian", opt) ;
+ AliWarning(Form("%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, TMatrixF & /*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
- //Convert phi to range 0-2pi if nesassary
- Double_t phiin2pi = phi ;
- while(phiin2pi<0)
- phiin2pi+=6.2831853072 ;
-
// 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) && (phiin2pi >= pm && phiin2pi <= pM ) )
- ModuleNumber = index ;
+ 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() ;
+ if ( moduleNumber != 0 ) {
+ Float_t phi0 = GetPHOSAngle(moduleNumber) * (TMath::Pi() / 180.) + 1.5 * TMath::Pi() ;
Float_t y0 = GetIPtoCrystalSurface() ;
- Double_t angle = phiin2pi - phi0;
+ Double_t angle = phi - phi0;
x = y0 * TMath::Tan(angle) ;
angle = theta - TMath::Pi() / 2 ;
z = y0 * TMath::Tan(angle) ;
}
//____________________________________________________________________________
-Bool_t AliPHOSGeometry::Impact(const TParticle * particle) const
+void AliPHOSGeometry::ImpactOnEmc(const TVector3& vec, Int_t & moduleNumber, Double_t & z, Double_t & x) const
{
- // Check if a particle being propagates from IP along the straight line impacts EMC
+ // 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 = vec.Theta() ;
+ Double_t phi = vec.Phi() ;
+
+ ImpactOnEmc(theta, phi, moduleNumber, z, x) ;
+}
+
+//____________________________________________________________________________
+void AliPHOSGeometry::ImpactOnEmc(const 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;
+ if(moduleNumber)
+ in=kTRUE;
+ else
+ in=kFALSE;
return in;
}
}
//____________________________________________________________________________
-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
-
- if(!module){
- AbsId = 0 ;
- return ;
- }
-
- Int_t relid[4] ;
- relid[0] = module ;
- relid[1] = 0 ;
- relid[2] = static_cast<Int_t>(TMath::Ceil(GetNPhi()/2.+ x/GetCellStep()));
- relid[3] = static_cast<Int_t>(TMath::Ceil(GetNZ()/2. - z/GetCellStep())) ;
-
- RelToAbsNumbering(relid,AbsId) ;
-}
-//____________________________________________________________________________
-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(Int_t module, Double_t x, 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
{
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
+ 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
}
}
+
+//____________________________________________________________________________
+
+void AliPHOSGeometry::GetModuleCenter(TVector3& center,
+ const 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
+ 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.);
+}
+
+//____________________________________________________________________________
+
+void AliPHOSGeometry::Global2Local(TVector3& localPosition,
+ const 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.;
+ localPosition = globalPosition;
+ localPosition.RotateZ(-angle);
+}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff