genfit::BellField Class Reference

Bell Field for SHiP. More...

#include <BellField.h>

Inheritance diagram for genfit::BellField:

Collaboration diagram for genfit::BellField:

Public Member Functions
	BellField ()
	BellField (double Peak, double Middle, int orientation, double Btube)
TVector3	get (const TVector3 &pos) const
	return value at position
void	get (const double &posX, const double &posY, const double &posZ, double &Bx, double &By, double &Bz) const
	Get the magneticField [kGauss] at position.
	BellField ()
	BellField (double Peak, double Middle)
TVector3	get (const TVector3 &pos) const
	return value at position
void	get (const double &posX, const double &posY, const double &posZ, double &Bx, double &By, double &Bz) const
	Get the magneticField [kGauss] at position.
Public Member Functions inherited from genfit::AbsBField
	AbsBField ()
virtual	~AbsBField ()

Private Attributes
double	fMiddle
double	fPeak
int	fOrient
double	fBtube

Detailed Description

Bell Field for SHiP.

Author

Thomas Ruf CERN

Definition at line 35 of file BellField.h.

Constructor & Destructor Documentation

BellField() [1/4]

genfit::BellField::BellField

(

)

Default constructor

Definition at line 33 of file BellField.cc.

    : AbsBField(),
      fMiddle(0),fPeak(0)
  { ; }

BellField() [2/4]

genfit::BellField::BellField	(	double	Peak,
		double	Middle,
		int	orientation,
		double	Btube
	)

Standard constructor

Definition at line 37 of file BellField.cc.

    : AbsBField(),
      fMiddle(Middle),fPeak(Peak),fOrient(orientation),fBtube(Btube)
  { ; }

BellField() [3/4]

genfit::BellField::BellField

(

)

Default constructor

BellField() [4/4]

genfit::BellField::BellField	(	double	Peak,
		double	Middle
	)

Standard constructor

Member Function Documentation

get() [1/4]

void genfit::BellField::get ( const double &  posX, const double &  posY, const double &  posZ, double &  Bx, double &  By, double &  Bz  ) const

virtual

Get the magneticField [kGauss] at position.

Override this in your concrete implementation.

Reimplemented from genfit::AbsBField.

Definition at line 49 of file BellField.cc.

                                                                                                               {
  Double_t zlocal=fabs((z-fMiddle)/100.);
  Bz = 0.;
  By = 0.;
  Bx = 0.;
  if (fOrient==1){ By = fPeak/(1.+pow(fabs(zlocal)/2.1,6.));}
  if (fOrient==2){
   //new field based on simulation of Davide Tommasini (22/1/2015)
 
    //field in box 20 cm larger than inner tube.
    if ( (fabs(x)<2.7*meter) && (fabs(y)<fBtube+0.2*meter) )  {
      if (zlocal<3.8) {
        Bx=0.14361*exp( -0.5 * pow((zlocal-0.45479E-01)/2.5046,2.));
      }else if (zlocal<11.9) {
        Bx=0.19532-0.61512E-01*zlocal+0.68447E-02*pow(zlocal,2.)-0.25672E-03*pow(zlocal,3.);
      }
      Bx=((fPeak/tesla)/0.14361)*Bx*tesla;
    }
  // cout << "genfit Bell " << x << ", " << y << ", " << z << ", Bx= " << Bx << endl;
  }
}

get() [2/4]

void genfit::BellField::get ( const double &  posX, const double &  posY, const double &  posZ, double &  Bx, double &  By, double &  Bz  ) const

virtual

Get the magneticField [kGauss] at position.

Override this in your concrete implementation.

Reimplemented from genfit::AbsBField.

get() [3/4]

TVector3 genfit::BellField::get ( const TVector3 &  pos ) const

virtual

return value at position

Implements genfit::AbsBField.

Definition at line 42 of file BellField.cc.

                                                 {
  Double_t bx,by,bz; 
  get(pos.X(),pos.Y(),pos.Z(),bx,by,bz);
  TVector3 field_(bx,by,bz);
  return field_;
}

get() [4/4]

TVector3 genfit::BellField::get ( const TVector3 &  pos ) const

virtual

return value at position

Implements genfit::AbsBField.

Member Data Documentation

fBtube

double genfit::BellField::fBtube

private

Definition at line 53 of file BellField.h.

fMiddle

double genfit::BellField::fMiddle

private

Definition at line 50 of file BellField.h.

fOrient

int genfit::BellField::fOrient

private

Definition at line 52 of file BellField.h.

fPeak

double genfit::BellField::fPeak

private

Definition at line 51 of file BellField.h.

---

The documentation for this class was generated from the following files:

• genfit/fields/include/BellField.h
• genfit/include/genfit/BellField.h
• genfit/fields/src/BellField.cc