ParabolicParametrizedMagneticField Class Reference

#include <ParabolicParametrizedMagneticField.h>

Inheritance diagram for ParabolicParametrizedMagneticField:

Public Member Functions
float	B0Z (const float a) const
GlobalVector	inTesla (const GlobalPoint &gp) const
	Field value ad specified global point, in Tesla. More...
GlobalVector	inTeslaUnchecked (const GlobalPoint &gp) const
bool	isDefined (const GlobalPoint &gp) const
	True if the point is within the region where the concrete field. More...
float	Kr (const float R2) const
	ParabolicParametrizedMagneticField ()
	Constructor. More...
virtual	~ParabolicParametrizedMagneticField ()
	Constructor. Parameters taken from a PSet. More...
Public Member Functions inherited from MagneticField
virtual MagneticField *	clone () const
GlobalVector	inInverseGeV (const GlobalPoint &gp) const
	Field value ad specified global point, in 1/Gev. More...
GlobalVector	inKGauss (const GlobalPoint &gp) const
	Field value ad specified global point, in KGauss. More...
	MagneticField ()
	MagneticField (const MagneticField &orig)
int	nominalValue () const
	The nominal field value for this map in kGauss. More...
virtual	~MagneticField ()

Private Attributes
const float	a = 2.43878e-11
const float	b0 = -3.94991e-06
const float	b1 = 7.53701e-06
const float	c1 = 3.8114

Detailed Description

A simple parametrization of the Bz component in the tracker region using the product of two parabolas

Author

G. Ortona - Torino

Definition at line 17 of file ParabolicParametrizedMagneticField.h.

Constructor & Destructor Documentation

ParabolicParametrizedMagneticField::ParabolicParametrizedMagneticField ( )

explicit

Constructor.

Definition at line 13 of file ParabolicParametrizedMagneticField.cc.

{}

ParabolicParametrizedMagneticField::~ParabolicParametrizedMagneticField ( )

virtual

Constructor. Parameters taken from a PSet.

Destructor

Definition at line 20 of file ParabolicParametrizedMagneticField.cc.

{}

Member Function Documentation

float ParabolicParametrizedMagneticField::B0Z ( const float  a ) const

inline

Definition at line 38 of file ParabolicParametrizedMagneticField.cc.

References alignmentValidation::c1.

                                                                        {
  return b0*z*z + b1*z + c1;
}

GlobalVector ParabolicParametrizedMagneticField::inTesla ( const GlobalPoint &  gp ) const

virtual

Field value ad specified global point, in Tesla.

Implements MagneticField.

Definition at line 24 of file ParabolicParametrizedMagneticField.cc.

References LogDebug.

                                                                       {
  if (isDefined(gp)) {
    return inTeslaUnchecked(gp);
  } else {
    LogDebug("MagneticField|FieldOutsideValidity") << " Point " << gp << " is outside the validity region of ParabolicParametrizedMagneticField";
    return GlobalVector();
  }
}

GlobalVector ParabolicParametrizedMagneticField::inTeslaUnchecked ( const GlobalPoint &  gp ) const

virtual

Optional implementation that derived classes can implement to provide faster query by skipping the check to isDefined.

Reimplemented from MagneticField.

Definition at line 33 of file ParabolicParametrizedMagneticField.cc.

References PV3DBase< T, PVType, FrameType >::perp2(), and PV3DBase< T, PVType, FrameType >::z().

                                                                                             {
  float B=B0Z(gp.z())*Kr(gp.perp2());
  return GlobalVector(0, 0, B);
}

bool ParabolicParametrizedMagneticField::isDefined ( const GlobalPoint &  gp ) const

inlinevirtual

True if the point is within the region where the concrete field.

Reimplemented from MagneticField.

Definition at line 46 of file ParabolicParametrizedMagneticField.cc.

References f, PV3DBase< T, PVType, FrameType >::perp2(), and PV3DBase< T, PVType, FrameType >::z().

                                                                                     {
  return (gp.perp2()<(13225.f) && fabs(gp.z())<280.f);
}

float ParabolicParametrizedMagneticField::Kr ( const float  R2 ) const

inline

Definition at line 42 of file ParabolicParametrizedMagneticField.cc.

References a.

                                                                        {
  return a*R2 +1.;
}

Member Data Documentation

const float ParabolicParametrizedMagneticField::a = 2.43878e-11

private

Definition at line 42 of file ParabolicParametrizedMagneticField.h.

const float ParabolicParametrizedMagneticField::b0 = -3.94991e-06

private

Definition at line 39 of file ParabolicParametrizedMagneticField.h.

const float ParabolicParametrizedMagneticField::b1 = 7.53701e-06

private

Definition at line 40 of file ParabolicParametrizedMagneticField.h.

const float ParabolicParametrizedMagneticField::c1 = 3.8114

private

Definition at line 41 of file ParabolicParametrizedMagneticField.h.