GFGeant4Field Class Reference

Interface of the Belle II B-field with GenFit. More...

#include <GFGeant4Field.h>

Inheritance diagram for GFGeant4Field:

Public Member Functions
	GFGeant4Field ()
	Constructor.
TVector3	get (const TVector3 &position) const override
	Getter for the magnetic field.

Detailed Description

Interface of the Belle II B-field with GenFit.

Definition at line 16 of file GFGeant4Field.h.

Constructor & Destructor Documentation

GFGeant4Field()

GFGeant4Field ( )

inline

Constructor.

The same B field as in the simulation is used. If you want to use a different field in reconstruction, please run two jobs and change the used B field in the geometry data (Belle2.xml file).

Definition at line 24 of file GFGeant4Field.h.

: genfit::AbsBField() {}

Member Function Documentation

get()

TVector3 get ( const TVector3 &  position ) const

inlineoverride

Getter for the magnetic field.

As Genfit uses kGauss, but we use T in basf2, we need to apply a factor 10 in the calculation.

Parameters

position

Position at which the magnetic field should be evaluated.

Definition at line 31 of file GFGeant4Field.h.

  {
    static double conversion{1. / Belle2::Unit::kGauss};
    return Belle2::B2Vector3D(Belle2::BFieldManager::getField(ROOT::Math::XYZVector(position)) * conversion);
  }

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

• tracking/gfbfield/include/GFGeant4Field.h