-#ifndef ALIMAGFCHEB_H
-#define ALIMAGFCHEB_H
-/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
- * See cxx source for full Copyright notice */
-
-/* $Id$ */
-
// Author: ruben.shahoyan@cern.ch 20/03/2007
-//
+
///////////////////////////////////////////////////////////////////////////////////
// //
// Wrapper for the set of mag.field parameterizations by Chebyshev polinomials //
// For cylindrical coordinates/components: //
// FieldCyl(float* rphiz, float* brphiz) //
// //
-// For the moment only the solenoid part is parameterized in the volume defined //
-// by R<500, -550<Z<550 cm //
+// The solenoid part is parameterized in the volume R<500, -550<Z<550 cm //
// //
// The region R<423 cm, -343.3<Z<481.3 for 30kA and -343.3<Z<481.3 for 12kA //
// is parameterized using measured data while outside the Tosca calculation //
// If the querried point is outside the validity region no the return values //
// for the field components are set to 0. //
// //
+// To obtain the field integral in the TPC region from given point to nearest //
+// cathod plane (+- 250 cm) use: //
+// GetTPCInt(float* xyz, float* bxyz); for Cartesian frame //
+// or //
+// GetTPCIntCyl(Float_t *rphiz, Float_t *b); for Cylindrical frame //
+// //
+// //
+// The units are kiloGauss and cm. //
+// //
///////////////////////////////////////////////////////////////////////////////////
+#ifndef _ALIMAGFCHEB_
+#define _ALIMAGFCHEB_
-
-#include <TSystem.h>
#include <TNamed.h>
+#include <TSystem.h>
#include "AliCheb3D.h"
-#include "AliCheb3DCalc.h"
class AliMagFCheb: public TNamed
{
public:
- AliMagFCheb();
- AliMagFCheb(const char* inputFile);
- AliMagFCheb(const AliMagFCheb &src);
- AliMagFCheb& operator= (const AliMagFCheb &rhs);
-
- ~AliMagFCheb();
+ AliMagFCheb();
+ AliMagFCheb(const AliMagFCheb& src);
+ ~AliMagFCheb() {Clear();}
//
- void AddParamSol(AliCheb3D* param);
- void AddParamDip(AliCheb3D* param);
- void BuildTableSol();
+ void CopyFrom(const AliMagFCheb& src);
+ AliMagFCheb& operator=(const AliMagFCheb& rhs);
+ virtual void Clear(Option_t * = "");
//
Int_t GetNParamsSol() const {return fNParamsSol;}
Int_t GetNSegZSol() const {return fNSegZSol;}
- Int_t GetNSegRSol(int iz) const {return iz<fNParamsSol ? fNSegRSol[iz]:0;}
- Int_t GetSegIDSol(int iz,int ir) const {return iz<fNParamsSol&&ir<fNSegRSol[iz] ? fSegZIdSol[iz]+ir:-1;}
+ //
+ Int_t GetNParamsTPCInt() const {return fNParamsTPCInt;}
+ Int_t GetNSegZTPCInt() const {return fNSegZTPCInt;}
+ //
+ Int_t GetNParamsDip() const {return fNParamsDip;}
+ Int_t GetNSegZDip() const {return fNZSegDip;}
+ //
//
Float_t GetMinZSol() const {return fMinZSol;}
Float_t GetMaxZSol() const {return fMaxZSol;}
Float_t GetMaxRSol() const {return fMaxRSol;}
+ //
+ Float_t GetMinZDip() const {return fMinZDip;}
+ Float_t GetMaxZDip() const {return fMaxZDip;}
+ //
+ Float_t GetMinZTPCInt() const {return fMinZTPCInt;}
+ Float_t GetMaxZTPCInt() const {return fMaxZTPCInt;}
+ Float_t GetMaxRTPCInt() const {return fMaxRTPCInt;}
+ //
+ Int_t FindDipSegment(float *xyz) const;
AliCheb3D* GetParamSol(Int_t ipar) const {return (AliCheb3D*)fParamsSol->UncheckedAt(ipar);}
+ AliCheb3D* GetParamTPCInt(Int_t ipar) const {return (AliCheb3D*)fParamsTPCInt->UncheckedAt(ipar);}
AliCheb3D* GetParamDip(Int_t ipar) const {return (AliCheb3D*)fParamsDip->UncheckedAt(ipar);}
//
void LoadData(const char* inpfile);
//
virtual void Field(Float_t *xyz, Float_t *b) const;
virtual void FieldCyl(Float_t *rphiz, Float_t *b) const;
- virtual void GetTPCInt(Float_t */*xyz*/, Float_t */*b*/) const {;}
- virtual void GetTPCIntCyl(Float_t */*rphiz*/, Float_t */*b*/) const {;}
//
+ virtual void GetTPCInt(Float_t *xyz, Float_t *b) const;
+ virtual void GetTPCIntCyl(Float_t *rphiz, Float_t *b) const;
//
+ static void CylToCartCylB(float *rphiz, float *brphiz,float *bxyz);
+ static void CylToCartCartB(float *xyz, float *brphiz,float *bxyz);
+ static void CartToCylCartB(float *xyz, float *bxyz, float *brphiz);
+ static void CartToCylCylB(float *rphiz, float *bxyz, float *brphiz);
+ static void CartToCyl(float *xyz, float *rphiz);
+ static void CylToCart(float *rphiz,float *xyz);
//
#ifdef _INC_CREATION_ALICHEB3D_ // see AliCheb3D.h for explanation
- void SaveData(const char* outfile) const;
+ AliMagFCheb(const char* inputFile);
+ void SaveData(const char* outfile) const;
+ Int_t SegmentDipDimension(float** seg,const TObjArray* par,int npar, int dim,
+ float xmn,float xmx,float ymn,float ymx,float zmn,float zmx);
+ //
+ void AddParamSol(AliCheb3D* param);
+ void AddParamTPCInt(AliCheb3D* param);
+ void AddParamDip(AliCheb3D* param);
+ void BuildTableDip();
+ void BuildTableSol();
+ void BuildTableTPCInt();
+ void ResetTPCInt();
+
#endif
//
protected:
- void Init0();
virtual void FieldCylSol(Float_t *rphiz, Float_t *b) const;
//
protected:
//
Int_t fNParamsSol; // Total number of parameterization pieces for Sol
- Int_t fNSegZSol; // Number of segments is Z
+ Int_t fNSegZSol; // Number of segments in Z for Solenoid field
+ //
+ Int_t fNParamsTPCInt; // Total number of parameterization pieces for TPC field integral
+ Int_t fNSegZTPCInt; // Number of segments in Z for TPC field integral
//
Int_t fNParamsDip; // Total number of parameterization pieces for dipole
+ Int_t fNZSegDip; // number of distinct Z segments in Dipole
+ Int_t fNYSegDip; // number of distinct Y segments in Dipole
+ Int_t fNXSegDip; // number of distinct X segments in Dipole
+ //
+ Float_t* fSegZSol; //[fNSegZSol] upper boundaries of Z segments
+ Float_t* fSegRSol; //[fNParamsSol] upper boundaries of R segments
+ //
+ Float_t* fSegZTPCInt; //[fNSegZTPCInt] upper boundaries of Z segments
+ Float_t* fSegRTPCInt; //[fNParamsTPCInt] upper boundaries of R segments
//
- Float_t* fSegZSol; //[fNSegZSol] upper boundaries of Z segments
- Float_t* fSegRSol; //[fNParamsSol] upper boundaries of R segments
+ Float_t* fSegZDip; //[fNZSegDip] coordinates of distinct Z segments in Dipole
+ Float_t* fSegYDip; //[fNYSegDip] coordinated of Y segments for each Zsegment in Dipole
+ Float_t* fSegXDip; //[fNXSegDip] coordinated of X segments for each Ysegment in Dipole
//
- Int_t* fNSegRSol; //[fNSegZSol] number of R segments for each Z segment
- Int_t* fSegZIdSol; //[fNSegZSol] Id of the first R segment of each Z segment in the fSegRSol...
+ Int_t* fNSegRSol; //[fNSegZSol] number of R segments for each Z segment
+ Int_t* fSegZIdSol; //[fNSegZSol] Id of the first R segment of each Z segment in the fSegRSol...
+ //
+ Int_t* fNSegRTPCInt; //[fNSegZTPCInt] number of R segments for each Z segment
+ Int_t* fSegZIdTPCInt; //[fNSegZTPCInt] Id of the first R segment of each Z segment in the fSegRTPCInt...
+ //
+ Int_t* fBegSegYDip; //[fNZSegDip] beginning of Y segments array for each Z segment
+ Int_t* fNSegYDip; //[fNZSegDip] number of Y segments for each Z segment
+ Int_t* fBegSegXDip; //[fNYSegDip] beginning of X segments array for each Y segment
+ Int_t* fNSegXDip; //[fNYSegDip] number of X segments for each Y segment
+ Int_t* fSegIDDip; //[fNXSegDip] ID of the dipole parameterization for given XYZ segment
//
Float_t fMinZSol; // Min Z of Sol parameterization (in CYL. coordinates)
Float_t fMaxZSol; // Max Z of Sol parameterization (in CYL. coordinates)
Float_t fMaxRSol; // Max R of Sol parameterization (in CYL. coordinates)
//
+ Float_t fMinZDip; // Min Z of Dipole parameterization
+ Float_t fMaxZDip; // Max Z of Dipole parameterization
+ //
+ Float_t fMinZTPCInt; // Min Z of TPCInt parameterization (in CYL. coordinates)
+ Float_t fMaxZTPCInt; // Max Z of TPCInt parameterization (in CYL. coordinates)
+ Float_t fMaxRTPCInt; // Max R of TPCInt parameterization (in CYL. coordinates)
+ //
TObjArray* fParamsSol; // Parameterization pieces for Solenoid field
TObjArray* fParamsDip; // Parameterization pieces for Dipole field
+ TObjArray* fParamsTPCInt; // Parameterization pieces for Solenoid field integrals in TPC region
//
- ClassDef(AliMagFCheb,1) // Wrapper class for the set of Chebishev parameterizations of Alice mag.field
+ ClassDef(AliMagFCheb,3) // Wrapper class for the set of Chebishev parameterizations of Alice mag.field
//
};
inline void AliMagFCheb::FieldCyl(Float_t *rphiz, Float_t *b) const
{
// compute field in Cylindircal coordinates
- if (rphiz[2]<GetMinZSol() || rphiz[2]>GetMaxZSol() || rphiz[0]>GetMaxRSol()) {for (int i=3;i--;) b[i]=0; return;}
+ // if (rphiz[2]<GetMinZSol() || rphiz[2]>GetMaxZSol() || rphiz[0]>GetMaxRSol()) {for (int i=3;i--;) b[i]=0; return;}
FieldCylSol(rphiz,b);
}
+//__________________________________________________________________________________________________
+inline void AliMagFCheb::CylToCartCylB(float *rphiz, float *brphiz,float *bxyz)
+{
+ // convert field in cylindrical coordinates to cartesian system, point is in cyl.system
+ float btr = TMath::Sqrt(brphiz[0]*brphiz[0]+brphiz[1]*brphiz[1]);
+ float psiPLUSphi = TMath::ATan2(brphiz[1],brphiz[0]) + rphiz[1];
+ bxyz[0] = btr*TMath::Cos(psiPLUSphi);
+ bxyz[1] = btr*TMath::Sin(psiPLUSphi);
+ bxyz[2] = brphiz[2];
+ //
+}
+
+//__________________________________________________________________________________________________
+inline void AliMagFCheb::CylToCartCartB(float *xyz, float *brphiz,float *bxyz)
+{
+ // convert field in cylindrical coordinates to cartesian system, point is in cart.system
+ float btr = TMath::Sqrt(brphiz[0]*brphiz[0]+brphiz[1]*brphiz[1]);
+ float phiPLUSpsi = TMath::ATan2(xyz[1],xyz[0]) + TMath::ATan2(brphiz[1],brphiz[0]);
+ bxyz[0] = btr*TMath::Cos(phiPLUSpsi);
+ bxyz[1] = btr*TMath::Sin(phiPLUSpsi);
+ bxyz[2] = brphiz[2];
+ //
+}
+
+//__________________________________________________________________________________________________
+inline void AliMagFCheb::CartToCylCartB(float *xyz ,float *bxyz, float *brphiz)
+{
+ // convert field in cylindrical coordinates to cartesian system, poin is in cart.system
+ float btr = TMath::Sqrt(bxyz[0]*bxyz[0]+bxyz[1]*bxyz[1]);
+ float psiMINphi = TMath::ATan2(bxyz[1],bxyz[0]) - TMath::ATan2(xyz[1],xyz[0]);
+ //
+ brphiz[0] = btr*TMath::Cos(psiMINphi);
+ brphiz[1] = btr*TMath::Sin(psiMINphi);
+ brphiz[2] = bxyz[2];
+ //
+}
+
+//__________________________________________________________________________________________________
+inline void AliMagFCheb::CartToCylCylB(float *rphiz,float *bxyz, float *brphiz)
+{
+ // convert field in cylindrical coordinates to cartesian system, point is in cyl.system
+ float btr = TMath::Sqrt(bxyz[0]*bxyz[0]+bxyz[1]*bxyz[1]);
+ float psiMINphi = TMath::ATan2(bxyz[1],bxyz[0]) - rphiz[1];
+ brphiz[0] = btr*TMath::Cos(psiMINphi);
+ brphiz[1] = btr*TMath::Sin(psiMINphi);
+ brphiz[2] = bxyz[2];
+ //
+}
+
+//__________________________________________________________________________________________________
+inline void AliMagFCheb::CartToCyl(float *xyz,float *rphiz)
+{
+ rphiz[0] = TMath::Sqrt(xyz[0]*xyz[0]+xyz[1]*xyz[1]);
+ rphiz[1] = TMath::ATan2(xyz[1],xyz[0]);
+ rphiz[2] = xyz[2];
+}
+
+//__________________________________________________________________________________________________
+inline void AliMagFCheb::CylToCart(float *rphiz,float *xyz)
+{
+ xyz[0] = rphiz[0]*TMath::Cos(rphiz[1]);
+ xyz[1] = rphiz[0]*TMath::Sin(rphiz[1]);
+ xyz[2] = rphiz[2];
+}
+
#endif
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff