/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
* See cxx source for full Copyright notice */
-/* $Id$ */
-
-#include "TNamed.h"
-
-enum Field_t {kUndef=1, kConst=1, kConMesh=2, kDipoMap=3};
-
-class AliMagF : public TNamed {
+//
+// Interface between the TVirtualMagField and AliMagWrapCheb: wrapper to
+// the set of magnetic field data + Tosca parameterization by
+// Chebyshev polynomials
+//
+// Author: ruben.shahoyan@cern.ch
+//
-public:
- AliMagF(){}
- AliMagF(const char *name, const char *title, const Int_t integ,
- const Float_t factor = 1., const Float_t fmax = 10.);
- virtual ~AliMagF() {}
- virtual void Field(Float_t *x, Float_t *b);
- virtual Int_t Type() const {return fType;}
- virtual Float_t Max() const {return fMax;}
- virtual Int_t Map() const {return fMap;}
- virtual Int_t Integ() const {return fInteg;}
- virtual Float_t Factor() const {return fFactor;}
- virtual void ReadField() {}
-
-protected:
- Int_t fMap; // Field Map identifier
- Int_t fType; // Mag Field type
- Int_t fInteg; // Integration method as indicated in Geant
- Float_t fFactor; // Multiplicative factor
- Float_t fMax; // Max Field as indicated in Geant
+//#include <TGeoGlobalMagField.h>
+#include <TVirtualMagField.h>
+class AliMagWrapCheb;
- ClassDef(AliMagF,1) //Base class for all Alice MagField
+class AliMagF : public TVirtualMagField
+{
+ public:
+ enum BMap_t {k2kG, k5kG, k5kGUniform};
+ enum BeamType_t {kNoBeamField, kBeamTypepp, kBeamTypeAA};
+ enum PolarityConvention_t {kConvLHC,kConvDCS2008,kConvMap2005};
+ enum {kOverrideGRP=BIT(14)}; // don't recreate from GRP if set
+ //
+ AliMagF();
+ AliMagF(const char *name, const char* title,Double_t factorSol=1., Double_t factorDip=1.,
+ BMap_t maptype = k5kG, BeamType_t btype=kBeamTypepp, Double_t benergy=-1,
+ Int_t integ=2, Double_t fmax=15,const char* path="$(ALICE_ROOT)/data/maps/mfchebKGI_sym.root");
+ AliMagF(const AliMagF& src);
+ AliMagF& operator=(const AliMagF& src);
+ virtual ~AliMagF();
+ //
+ virtual void Field(const Double_t *x, Double_t *b);
+ void GetTPCInt(const Double_t *xyz, Double_t *b) const;
+ void GetTPCRatInt(const Double_t *xyz, Double_t *b) const;
+ void GetTPCIntCyl(const Double_t *rphiz, Double_t *b) const;
+ void GetTPCRatIntCyl(const Double_t *rphiz, Double_t *b) const;
+ Double_t GetBz(const Double_t *xyz) const;
+ //
+ AliMagWrapCheb* GetMeasuredMap() const {return fMeasuredMap;}
+ //
+ // former AliMagF methods or their aliases
+ void SetFactorSol(Float_t fc=1.);
+ void SetFactorDip(Float_t fc=1.);
+ Double_t GetFactorSol() const;
+ Double_t GetFactorDip() const;
+ Double_t Factor() const {return GetFactorSol();}
+ Double_t GetCurrentSol() const {return GetFactorSol()*(fMapType==k2kG ? 12000:30000);}
+ Double_t GetCurrentDip() const {return GetFactorDip()*6000;}
+ Bool_t IsUniform() const {return fMapType == k5kGUniform;}
+ //
+ void MachineField(const Double_t *x, Double_t *b) const;
+ BMap_t GetMapType() const {return fMapType;}
+ BeamType_t GetBeamType() const {return fBeamType;}
+ const char* GetBeamTypeText() const;
+ Double_t GetBeamEnergy() const {return fBeamEnergy;}
+ Double_t Max() const {return fMax;}
+ Int_t Integ() const {return fInteg;}
+ Int_t PrecInteg() const {return fPrecInteg;}
+ Double_t SolenoidField() const {return fFactorSol*fSolenoid;}
+ //
+ Char_t* GetDataFileName() const {return (Char_t*)fParNames.GetName();}
+ Char_t* GetParamName() const {return (Char_t*)fParNames.GetTitle();}
+ void SetDataFileName(const Char_t* nm) {fParNames.SetName(nm);}
+ void SetParamName(const Char_t* nm) {fParNames.SetTitle(nm);}
+ virtual void Print(Option_t *opt) const;
+ //
+ Bool_t LoadParameterization();
+ static Int_t GetPolarityConvention() {return Int_t(fgkPolarityConvention);}
+ static AliMagF* CreateFieldMap(Float_t l3Current=-30000., Float_t diCurrent=-6000.,
+ Int_t convention=0, Bool_t uniform = kFALSE,
+ Float_t beamenergy=7000, const Char_t* btype="pp",
+ const Char_t* path="$(ALICE_ROOT)/data/maps/mfchebKGI_sym.root");
+ //
+ protected:
+ // not supposed to be changed during the run, set only at the initialization via constructor
+ void InitMachineField(BeamType_t btype, Double_t benergy);
+ void SetBeamType(BeamType_t type) {fBeamType = type;}
+ void SetBeamEnergy(Float_t energy) {fBeamEnergy = energy;}
+ //
+ protected:
+ AliMagWrapCheb* fMeasuredMap; //! Measured part of the field map
+ BMap_t fMapType; // field map type
+ Double_t fSolenoid; // Solenoid field setting
+ BeamType_t fBeamType; // Beam type: A-A (fBeamType=0) or p-p (fBeamType=1)
+ Double_t fBeamEnergy; // Beam energy in GeV
+ //
+ Int_t fInteg; // Default integration method as indicated in Geant
+ Int_t fPrecInteg; // Alternative integration method, e.g. for higher precision
+ Double_t fFactorSol; // Multiplicative factor for solenoid
+ Double_t fFactorDip; // Multiplicative factor for dipole
+ Double_t fMax; // Max Field as indicated in Geant
+ Bool_t fDipoleOFF; // Dipole ON/OFF flag
+ //
+ Double_t fQuadGradient; // Gradient field for inner triplet quadrupoles
+ Double_t fDipoleField; // Field value for D1 and D2 dipoles
+ Double_t fCCorrField; // Side C 2nd compensator field
+ Double_t fACorr1Field; // Side A 1st compensator field
+ Double_t fACorr2Field; // Side A 2nd compensator field
+ //
+ TNamed fParNames; // file and parameterization loadad
+ //
+ static const Double_t fgkSol2DipZ; // conventional Z of transition from L3 to Dipole field
+ static const UShort_t fgkPolarityConvention; // convention for the mapping of the curr.sign on main component sign
+ //
+ ClassDef(AliMagF, 2) // Class for all Alice MagField wrapper for measured data + Tosca parameterization
};
-//ZDC part -------------------------------------------------------------------
-
- static const Float_t kG1=20.03;
- static const Float_t kFDIP=-37.34;
- static const Float_t kFDIMU=6.;
- static const Float_t kFCORN2=-9.4;
-//
-// ZBEG Beginning of the inner triplet
-// D1BEG Beginning of separator dipole 1
-// D2BEG Beginning of separator dipole 2
-// CORBEG Corrector dipole beginning (because of dimuon arm)
-//
- static const Float_t kCORBEG2=19216,kCOREND2=kCORBEG2+170, kCOR2RA2=4.5*4.5;
-//
- static const Float_t kZBEG=2300;
- static const Float_t kZ1BEG=kZBEG+ 0,kZ1END=kZ1BEG+630,kZ1RA2=3.5*3.5;
- static const Float_t kZ2BEG=kZBEG+ 880,kZ2END=kZ2BEG+550,kZ2RA2=3.5*3.5;
- static const Float_t kZ3BEG=kZBEG+1530,kZ3END=kZ3BEG+550,kZ3RA2=3.5*3.5;
- static const Float_t kZ4BEG=kZBEG+2430,kZ4END=kZ4BEG+630,kZ4RA2=3.5*3.5;
- static const Float_t kD1BEG=5838.3 ,kD1END=kD1BEG+945,kD1RA2=4.5*4.5;
- static const Float_t kD2BEG=12147.6 ,kD2END=kD2BEG+945,kD2RA2=4.5*4.5;
-//
- static const Float_t kXCEN1D2=-9.7 ,kYCEN1D2=0.;
- static const Float_t kXCEN2D2=9.7 ,kYCEN2D2=0.;
-
-//ZDC part -------------------------------------------------------------------
#endif
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff