#include <FieldBuilder.h>

Public Member Functions
void	build (G4FieldManager fM=0, G4PropagatorInField fP=0)

void	configureForVolume (const std::string &volName, edm::ParameterSet &volPSet, G4FieldManager fM=0, G4PropagatorInField fP=0)

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

G4LogicalVolume *	fieldTopVolume ()

void	setStepperAndChordFinder (G4FieldManager *fM, int val)

Private Member Functions
void	configureFieldManager (G4FieldManager *fM)

void	configurePropagatorInField (G4PropagatorInField *fP)

Private Attributes
double	dChord

double	delta

double	dIntersection

double	dIntersectionAndOneStep

double	dOneStep

G4ChordFinder *	fChordFinder

G4ChordFinder *	fChordFinderMonopole

std::string	fieldType

double	fieldValue

std::string	keywordField

double	maxEpsilonStep

double	maxLoopCount

double	minEpsilonStep

double	minStep

std::string	stepper

std::auto_ptr< Field >	theField

G4Mag_UsualEqRhs *	theFieldEquation

edm::ParameterSet	thePSet

G4LogicalVolume *	theTopVolume

Detailed Description

Definition at line 19 of file FieldBuilder.h.

Constructor & Destructor Documentation

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

Definition at line 33 of file FieldBuilder.cc.

References delta, edm::ParameterSet::getParameter(), theField, and theFieldEquation.

   : theField(new Field(f, p.getParameter<double>("delta"))),
     theFieldEquation(new G4Mag_UsualEqRhs(theField.get())),
     theTopVolume(0), fChordFinder(0), fChordFinderMonopole(0),
     fieldValue(0.), minStep(0.), dChord(0.), dOneStep(0.),
     dIntersection(0.), dIntersectionAndOneStep(0.), 
     maxLoopCount(0), minEpsilonStep(0.), maxEpsilonStep(0.), 
     thePSet(p) 
 {
   delta = p.getParameter<double>("delta");
   theField->fieldEquation(theFieldEquation);
 }

Member Function Documentation

void FieldBuilder::build	(	G4FieldManager *	fM = `0`,
		G4PropagatorInField *	fP = `0`
	)

Definition at line 47 of file FieldBuilder.cc.

References configureForVolume(), gather_cfg::cout, edm::ParameterSet::getParameter(), edm::ParameterSet::getUntrackedParameter(), i, reco::return(), sim::LocalFieldManager::SetVerbosity(), AlCaHLTBitMon_QueryRunRegistry::string, theField, thePSet, and theTopVolume.

Referenced by RunManager::initG4(), and RunManagerMT::initG4().

 {    
   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 );
     
   // configure( "MagneticFieldType", fM, fP ) ;
 
   if ( thePSet.getParameter<bool>("UseLocalMagFieldManager") )  {
 
     edm::LogInfo("SimG4CoreApplication") 
       << " FieldBuilder: Local magnetic field is used";
 
     edm::ParameterSet defpset ;
     edm::ParameterSet thePSetForLMFM = 
       thePSet.getUntrackedParameter<edm::ParameterSet>("ConfLocalMFM", defpset);
     //
     // Patology !!! LocalFM requested but configuration not given ! 
     // In principal, need to throw an exception
     //
     if ( thePSetForLMFM == defpset )  {
       std::cout << " Patology ! Local Mag.Field Manager requested but config not given !\n";
       return ;
     }
        
     std::vector<std::string> ListOfVolumes = 
       thePSetForLMFM.getParameter< std::vector<std::string> >("ListOfVolumes");
       
     // creating Local Mag.Field Manager
     for (unsigned int i = 0; i < ListOfVolumes.size(); ++ i )   {
       volPSet = thePSetForLMFM.getParameter< edm::ParameterSet >(ListOfVolumes[i]);
       G4FieldManager* fAltM = new G4FieldManager() ;
       configureForVolume( ListOfVolumes[i], volPSet, fAltM ) ;
       //configureLocalFM( ListOfVolumes[i], fAltM ) ;
       LocalFieldManager* fLM = new LocalFieldManager( theField.get(), fM, fAltM ) ;
       fLM->SetVerbosity(thePSet.getUntrackedParameter<bool>("Verbosity",false));
       theTopVolume->SetFieldManager( fLM, true ) ;
     }
   } else {
     edm::LogInfo("SimG4CoreApplication") 
       << " FieldBuilder: Global magnetic field is used";
   }
 }

void FieldBuilder::configureFieldManager ( G4FieldManager * fM )

private

Definition at line 149 of file FieldBuilder.cc.

References dChord, delta, dIntersection, dIntersectionAndOneStep, dOneStep, fChordFinderMonopole, minStep, sim::FieldStepper::select(), stepper, and theField.

Referenced by configureForVolume().

                                                             {
 
   if (fM!=0) {
     fM->SetDetectorField(theField.get());
     FieldStepper * theStepper = 
       new FieldStepper(theField->fieldEquation(), delta);
     theStepper->select(stepper);
     G4ChordFinder * CF = new G4ChordFinder(theField.get(),minStep,theStepper);
     CF->SetDeltaChord(dChord);
     fM->SetChordFinder(CF);
     fM->SetDeltaOneStep(dOneStep);
     fM->SetDeltaIntersection(dIntersection);
     if (dIntersectionAndOneStep != -1.) 
       fM->SetAccuraciesWithDeltaOneStep(dIntersectionAndOneStep);
   }
   if (fChordFinderMonopole == 0) {
     G4MonopoleEquation* fMonopoleEquation = 
       new G4MonopoleEquation(theField.get());
     G4MagIntegratorStepper* theStepper = 
       new G4ClassicalRK4(fMonopoleEquation,8);
     fChordFinderMonopole = 
       new G4ChordFinder(theField.get(),minStep,theStepper);
     fChordFinderMonopole->SetDeltaChord(dChord);
   }
 }

void FieldBuilder::configureForVolume	(	const std::string &	volName,
		edm::ParameterSet &	volPSet,
		G4FieldManager *	fM = `0`,
		G4PropagatorInField *	fP = `0`
	)

Definition at line 97 of file FieldBuilder.cc.

References configureFieldManager(), configurePropagatorInField(), dChord, delta, dIntersection, dIntersectionAndOneStep, dOneStep, fieldType, edm::ParameterSet::getParameter(), i, maxEpsilonStep, maxLoopCount, minEpsilonStep, minStep, stepper, AlCaHLTBitMon_QueryRunRegistry::string, and theTopVolume.

Referenced by build().

 {
   G4LogicalVolumeStore* theStore = G4LogicalVolumeStore::GetInstance();
   for (unsigned int i=0; i<(*theStore).size(); ++i ) {
     std::string curVolName = ((*theStore)[i])->GetName();
     if ( curVolName == volName ) {
       theTopVolume = (*theStore)[i] ;
     }
   }
 
   fieldType     = volPSet.getParameter<std::string>("Type") ;
   stepper       = volPSet.getParameter<std::string>("Stepper") ;
   edm::ParameterSet stpPSet = 
     volPSet.getParameter<edm::ParameterSet>("StepperParam") ;
   minStep       = stpPSet.getParameter<double>("MinStep") ;
   dChord        = stpPSet.getParameter<double>("DeltaChord") ;
   dOneStep      = stpPSet.getParameter<double>("DeltaOneStep") ;
   dIntersection = stpPSet.getParameter<double>("DeltaIntersection") ;
   dIntersectionAndOneStep = 
     stpPSet.getUntrackedParameter<double>("DeltaIntersectionAndOneStep",-1.);
   maxLoopCount = 
     stpPSet.getUntrackedParameter<double>("MaximumLoopCounts",1000);
   minEpsilonStep = 
     stpPSet.getUntrackedParameter<double>("MinimumEpsilonStep",0.00001);
   maxEpsilonStep = 
     stpPSet.getUntrackedParameter<double>("MaximumEpsilonStep",0.01);
    
   if (fM!=0) configureFieldManager(fM);
   if (fP!=0) configurePropagatorInField(fP);    
 
   edm::LogInfo("SimG4CoreApplication") 
     << " FieldBuilder: Selected stepper: <" << stepper 
     << ">  const field delta(mm)= " << delta;
 }

void FieldBuilder::configurePropagatorInField ( G4PropagatorInField * fP )

private

Definition at line 175 of file FieldBuilder.cc.

References maxEpsilonStep, maxLoopCount, and minEpsilonStep.

Referenced by configureForVolume().

                                                                       {
   if(fP!=0) {
     fP->SetMaxLoopCount(int(maxLoopCount));
     fP->SetMinimumEpsilonStep(minEpsilonStep);
     fP->SetMaximumEpsilonStep(maxEpsilonStep);
     fP->SetVerboseLevel(0);
   }
 }

G4LogicalVolume * FieldBuilder::fieldTopVolume ( )

Definition at line 135 of file FieldBuilder.cc.

References theTopVolume.

135 { return theTopVolume; }

sim::FieldBuilder::theTopVolume

G4LogicalVolume * theTopVolume

Definition: FieldBuilder.h:49

void FieldBuilder::setStepperAndChordFinder	(	G4FieldManager *	fM,
		int	val
	)

Definition at line 137 of file FieldBuilder.cc.

References fChordFinder, and fChordFinderMonopole.

                                                                         {
 
   if (fM != 0) {
     if (val == 0) {
       if (fChordFinder != 0) fM->SetChordFinder(fChordFinder);
     } else {
       fChordFinder = fM->GetChordFinder();
       if (fChordFinderMonopole != 0) fM->SetChordFinder(fChordFinderMonopole);
     }
   }
 }