Jug::BField::DD4hepBField Class Reference

#include <DD4hepBField.h>

Inheritance diagram for Jug::BField::DD4hepBField:

Classes
struct	Cache

Public Member Functions
Acts::MagneticFieldProvider::Cache	makeCache (const Acts::MagneticFieldContext &mctx) const override
	DD4hepBField (dd4hep::Detector *det)
Acts::Result< Acts::Vector3 >	getField (const Acts::Vector3 &position, Acts::MagneticFieldProvider::Cache &cache) const override
Acts::Result< Acts::Vector3 >	getFieldGradient (const Acts::Vector3 &position, Acts::ActsMatrix< 3, 3 > &, Acts::MagneticFieldProvider::Cache &cache) const override
	retrieve magnetic field value & its gradient More...

Public Attributes
std::shared_ptr< dd4hep::Detector >	m_det

Detailed Description

Use the dd4hep magnetic field in acts.

Constructor & Destructor Documentation

DD4hepBField()

Jug::BField::DD4hepBField::DD4hepBField ( dd4hep::Detector *  det )

inlineexplicit

construct constant magnetic field from field vector.

Parameters

[in]

DD4hep

detector instance

Member Function Documentation

getField()

Acts::Result< Acts::Vector3 > Jug::BField::DD4hepBField::getField ( const Acts::Vector3 &  position, Acts::MagneticFieldProvider::Cache &  cache  ) const

override

retrieve magnetic field value.

Parameters

[in]	position	global position
[in]	cache	Cache object (is ignored)

Returns

magnetic field vector

Note

The position is ignored and only kept as argument to provide a consistent interface with other magnetic field services.

getFieldGradient()

Acts::Result< Acts::Vector3 > Jug::BField::DD4hepBField::getFieldGradient ( const Acts::Vector3 &  position, Acts::ActsMatrix< 3, 3 > &  , Acts::MagneticFieldProvider::Cache &  cache  ) const

override

retrieve magnetic field value & its gradient

Parameters

[in]	position	global position
[out]	derivative	gradient of magnetic field vector as (3x3) matrix
[in]	cache	Cache object (is ignored)

Returns

magnetic field vector

Note

The position is ignored and only kept as argument to provide a consistent interface with other magnetic field services.

currently the derivative is not calculated

Todo:

return derivative

makeCache()

Acts::MagneticFieldProvider::Cache Jug::BField::DD4hepBField::makeCache ( const Acts::MagneticFieldContext &  mctx ) const

inlineoverride

Member Data Documentation

m_det

std::shared_ptr<dd4hep::Detector> Jug::BField::DD4hepBField::m_det

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

• /builds/eic/juggler/JugBase/JugBase/BField/DD4hepBField.h
• /builds/eic/juggler/JugBase/src/Plugins/DD4hepBField.cpp