PolyFit2DParametrizedMagneticField Class Reference

#include <PolyFit2DParametrizedMagneticField.h>

Inheritance diagram for PolyFit2DParametrizedMagneticField:

Public Member Functions
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...
	PolyFit2DParametrizedMagneticField (double bVal=3.8114)
	PolyFit2DParametrizedMagneticField (const edm::ParameterSet &parameters)
	Constructor. Parameters taken from a PSet. More...
virtual	~PolyFit2DParametrizedMagneticField ()
	Destructor. 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
magfieldparam::BFit *	theParam

Detailed Description

Magnetic Field engine wrapper for V. Maroussov's 2D parametrization of the MT data.

Author

N. Amapane

Definition at line 18 of file PolyFit2DParametrizedMagneticField.h.

Constructor & Destructor Documentation

PolyFit2DParametrizedMagneticField::PolyFit2DParametrizedMagneticField

(

double

bVal = 3.8114

)

Constructor. Fitted bVal for the nominal currents are: 2.0216; 3.5162; 3.8114; 4.01242188708911

Definition at line 16 of file PolyFit2DParametrizedMagneticField.cc.

References magfieldparam::BFit::SetField(), and theParam.

                                                                                  : 
  theParam(new BFit())
{
  theParam->SetField(bVal);
}

PolyFit2DParametrizedMagneticField::PolyFit2DParametrizedMagneticField

(

const edm::ParameterSet &

parameters

)

Constructor. Parameters taken from a PSet.

Definition at line 23 of file PolyFit2DParametrizedMagneticField.cc.

References edm::ParameterSet::getParameter(), magfieldparam::BFit::SetField(), and theParam.

                                                                                                        : theParam(new BFit()) {
  theParam->SetField(parameters.getParameter<double>("BValue"));
}

PolyFit2DParametrizedMagneticField::~PolyFit2DParametrizedMagneticField ( )

virtual

Destructor.

Definition at line 28 of file PolyFit2DParametrizedMagneticField.cc.

References theParam.

                                                                        {
  delete theParam;
}

Member Function Documentation

GlobalVector PolyFit2DParametrizedMagneticField::inTesla ( const GlobalPoint &  gp ) const

virtual

Field value ad specified global point, in Tesla.

Implements MagneticField.

Definition at line 34 of file PolyFit2DParametrizedMagneticField.cc.

References inTeslaUnchecked(), and isDefined().

                                                                       {

  if (isDefined(gp)) {
    return inTeslaUnchecked(gp);
  } else {
    edm::LogWarning("MagneticField|FieldOutsideValidity") << " Point " << gp << " is outside the validity region of PolyFit2DParametrizedMagneticField";
    return GlobalVector();
  }
}

GlobalVector PolyFit2DParametrizedMagneticField::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 45 of file PolyFit2DParametrizedMagneticField.cc.

References funct::cos(), magfieldparam::BFit::GetField(), PV3DBase< T, PVType, FrameType >::perp(), PV3DBase< T, PVType, FrameType >::phi(), funct::sin(), theParam, and PV3DBase< T, PVType, FrameType >::z().

Referenced by inTesla().

                                                                                {
  double Br, Bz, Bphi;
  theParam->GetField(gp.perp()/100., gp.z()/100., gp.phi(),
             Br, Bz, Bphi);

  double cosphi = cos(gp.phi());
  double sinphi = sin(gp.phi());

  return GlobalVector(Br*cosphi - Bphi*sinphi,
              Br*sinphi + Bphi*cosphi, 
              Bz);  
}

bool PolyFit2DParametrizedMagneticField::isDefined ( const GlobalPoint &  ) const

virtual

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

Reimplemented from MagneticField.

Definition at line 59 of file PolyFit2DParametrizedMagneticField.cc.

References PV3DBase< T, PVType, FrameType >::perp(), alignCSCRings::r, z, and PV3DBase< T, PVType, FrameType >::z().

Referenced by inTesla().

                                                                         {
  double z = fabs(gp.z());
  double r = gp.perp();
  //"rectangle" |z|<3.5, r<1.9 _except_ the "corners" |z|+2.5*r>6.7, everything in meters
  if (z>350. || r>190 || z+2.5*r>670.) return false;
  return true;
}

Member Data Documentation

magfieldparam::BFit* PolyFit2DParametrizedMagneticField::theParam

private

Definition at line 37 of file PolyFit2DParametrizedMagneticField.h.

Referenced by inTeslaUnchecked(), PolyFit2DParametrizedMagneticField(), and ~PolyFit2DParametrizedMagneticField().