sim::FieldBuilder Class Reference

#include <FieldBuilder.h>

Public Member Functions
void	build (CMSFieldManager *fM, G4PropagatorInField *fP)
void	configureForVolume (const std::string &volName, edm::ParameterSet &volPSet, CMSFieldManager *fM, G4PropagatorInField *fP)
	FieldBuilder (const MagneticField *, const edm::ParameterSet &)
	~FieldBuilder ()

Private Attributes
double	theDelta
Field *	theField
G4Mag_UsualEqRhs *	theFieldEquation
edm::ParameterSet	thePSet
G4LogicalVolume *	theTopVolume

Detailed Description

Definition at line 15 of file FieldBuilder.h.

Constructor & Destructor Documentation

FieldBuilder()

FieldBuilder::FieldBuilder	(	const MagneticField *	f,
		const edm::ParameterSet &	p
	)

Definition at line 23 of file FieldBuilder.cc.

                                                                           : theTopVolume(nullptr), thePSet(p) {
  theDelta = p.getParameter<double>("delta") * CLHEP::mm;
  theField = new Field(f, theDelta);
  theFieldEquation = new G4Mag_UsualEqRhs(theField);
}

References f, AlCaHLTBitMon_ParallelJobs::p, theDelta, theField, and theFieldEquation.

~FieldBuilder()

FieldBuilder::~FieldBuilder

(

)

Definition at line 29 of file FieldBuilder.cc.

{}

Member Function Documentation

build()

void FieldBuilder::build	(	CMSFieldManager *	fM,
		G4PropagatorInField *	fP
	)

Definition at line 31 of file FieldBuilder.cc.

                                                                     {
  edm::ParameterSet thePSetForGMFM = thePSet.getParameter<edm::ParameterSet>("ConfGlobalMFM");
  std::string volName = thePSetForGMFM.getParameter<std::string>("Volume");
  edm::ParameterSet volPSet = thePSetForGMFM.getParameter<edm::ParameterSet>(volName);
 
  configureForVolume(volName, volPSet, fM, fP);
 
  edm::LogVerbatim("SimG4CoreMagneticField") << " FieldBuilder::build: Global magnetic field is used";
}

References configureForVolume(), edm::ParameterSet::getParameter(), AlCaHLTBitMon_QueryRunRegistry::string, and thePSet.

configureForVolume()

void FieldBuilder::configureForVolume	(	const std::string &	volName,
		edm::ParameterSet &	volPSet,
		CMSFieldManager *	fM,
		G4PropagatorInField *	fP
	)

Definition at line 41 of file FieldBuilder.cc.

                                                               {
  G4LogicalVolumeStore *theStore = G4LogicalVolumeStore::GetInstance();
  for (auto vol : *theStore) {
    if ((std::string)vol->GetName() == volName) {
      theTopVolume = vol;
      break;
    }
  }
 
  std::string fieldType = volPSet.getParameter<std::string>("Type");
  std::string stepper = volPSet.getParameter<std::string>("Stepper");
 
  edm::ParameterSet stpPSet = volPSet.getParameter<edm::ParameterSet>("StepperParam");
  double minStep = stpPSet.getParameter<double>("MinStep") * CLHEP::mm;
 
  FieldStepper *dStepper = new FieldStepper(theFieldEquation, theDelta, stepper);
  G4ChordFinder *cf = new G4ChordFinder(theField, minStep, dStepper);
 
  MonopoleEquation *monopoleEquation = new MonopoleEquation(theField);
  G4MagIntegratorStepper *mStepper = new G4ClassicalRK4(monopoleEquation, 8);
  G4ChordFinder *cfmon = new G4ChordFinder(theField, minStep, mStepper);
 
  fM->InitialiseForVolume(stpPSet, theField, cf, cfmon, volName, fieldType, stepper, theDelta, fP);
}

References edm::ParameterSet::getParameter(), CMSFieldManager::InitialiseForVolume(), AlCaHLTBitMon_QueryRunRegistry::string, theDelta, theField, theFieldEquation, and theTopVolume.

Referenced by build().

Member Data Documentation

theDelta

double sim::FieldBuilder::theDelta

private

Definition at line 33 of file FieldBuilder.h.

Referenced by configureForVolume(), and FieldBuilder().

theField

Field* sim::FieldBuilder::theField

private

Definition at line 29 of file FieldBuilder.h.

Referenced by configureForVolume(), and FieldBuilder().

theFieldEquation

G4Mag_UsualEqRhs* sim::FieldBuilder::theFieldEquation

private

Definition at line 30 of file FieldBuilder.h.

Referenced by configureForVolume(), and FieldBuilder().

thePSet

edm::ParameterSet sim::FieldBuilder::thePSet

private

Definition at line 32 of file FieldBuilder.h.

Referenced by build().

theTopVolume

G4LogicalVolume* sim::FieldBuilder::theTopVolume

private

Definition at line 31 of file FieldBuilder.h.

Referenced by configureForVolume().