A bunch distribution with a linear sweep in momentum in time. More...

#include <BDSBunchSlowExt.hh>

Inheritance diagram for BDSBunchSlowExt:

Collaboration diagram for BDSBunchSlowExt:

Public Member Functions
virtual void	SetOptions (const BDSParticleDefinition *beamParticle, const GMAD::Beam &beam, const BDSBunchType &distrType, G4Transform3D beamlineTransformIn=G4Transform3D::Identity, const G4double beamlineS=0)

virtual void	CheckParameters ()

virtual BDSParticleCoordsFull	GetNextParticleLocal ()

void	GetDeltas (G4double &dt, G4double &dE) const


BDSBunchSlowExt &	operator= (const BDSBunchSlowExt &)=delete
	Assignment and copy constructor not implemented nor used.

	BDSBunchSlowExt (BDSBunchSlowExt &)=delete
	Assignment and copy constructor not implemented nor used.

Public Member Functions inherited from BDSBunch
	BDSBunch (const G4String &nameIn)

virtual void	Initialise ()
	Any initialisation - to be used after SetOptions, then CheckParameters.

BDSParticleCoordsFullGlobal	GetNextParticle ()

virtual G4bool	ExpectChangingParticleType () const
	A hint of whether we expect to require and extended particle set (ie pions, kaons, muons).

virtual BDSParticleCoordsFullGlobal	GetNextParticleValid (G4int maxTries=100)

virtual void	BeginOfRunAction (G4int numberOfEvents, G4bool batchMode)

virtual const BDSParticleDefinition *	ParticleDefinition () const
	Access the beam particle definition.

virtual void	SetGeneratePrimariesOnly (G4bool generatePrimariesOnlyIn)

G4bool	UseCurvilinearTransform () const
	Access whether there's a finite S offset and therefore we're using a CL transform.

virtual void	RecreateAdvanceToEvent (G4int eventOffset)

G4bool	BeamParticleIsAnIon () const
	Access whether the beam particle is an ion or not.

virtual void	UpdateIonDefinition ()

G4bool	ParticleDefinitionHasBeenUpdated () const

G4String	Name () const
	Distribution name.

G4int	CurrentBunchIndex () const
	Get the current bunch index for writing to output.

void	CalculateBunchIndex (G4int eventIndex)
	Calculate which bunch index we should be at given an event index.

Protected Attributes
G4double	dTStart

G4double	dTStop

G4double	dPStart

G4double	dPStop

G4bool	applyGradient

G4double	dT

G4double	dEStart

G4double	dE

Protected Attributes inherited from BDSBunch
G4String	name
	Name of distribution.

G4bool	useCurvilinear
	Whether to ignore z and use s and transform for curvilinear coordinates.

BDSParticleDefinition *	particleDefinition
	Particle definition for bunch - this class owns it.

G4bool	particleDefinitionHasBeenUpdated

G4bool	finiteTilt

G4bool	generatePrimariesOnly

G4double	X0
	Centre of distributions.

G4double	Y0
	Centre of distributions.

G4double	Z0
	Centre of distributions.

G4double	S0
	Centre of distributions.

G4double	T0
	Centre of distributions.

G4double	Xp0
	Centre of distributions.

G4double	Yp0
	Centre of distributions.

G4double	Zp0
	Centre of distributions.

G4double	E0
	Centre of distributions.

G4double	P0
	central momentum

G4double	tilt
	Centre of distributions.

G4double	sigmaT
	Centre of distributions.

G4double	sigmaP
	Centre of distributions.

G4double	sigmaE
	Centre of distributions.

G4double	sigmaEk
	Centre of distributions.

bool	useBunchTiming
	Bunch offset in time parameters.

G4int	currentBunchIndex
	Bunch offset in time parameters.

G4int	eventsPerBunch
	Bunch offset in time parameters.

G4double	bunchPeriod
	Bunch offset in time parameters.

G4bool	finiteSigmaE
	Flags to ignore random number generator in case of no finite E or T.

G4bool	finiteSigmaT
	Flags to ignore random number generator in case of no finite E or T.

Additional Inherited Members
Static Public Member Functions inherited from BDSBunch
static G4double	CalculateZp (G4double xp, G4double yp, G4double Zp0)
	Calculate zp safely based on other components.

static void	SetEmittances (const BDSParticleDefinition *beamParticle, const GMAD::Beam &beam, G4double &emittGeometricX, G4double &emittGeometricY, G4double &emittNormalisedX, G4double &emittNormalisedY)

Protected Member Functions inherited from BDSBunch
BDSParticleCoordsFullGlobal	ApplyTransform (const BDSParticleCoordsFull &localIn) const

void	ApplyTilt (BDSParticleCoordsFull &localIn) const
	Apply a rotation about unitZ for the local coordinates according to member variable tilt.

void	ApplyBunchTiming (BDSParticleCoordsFullGlobal &localIn) const
	Add on the offset in T for the current bunch number (i*bunchPeriod).

BDSParticleCoordsFullGlobal	ApplyCurvilinearTransform (const BDSParticleCoordsFull &localIn) const
	Calculate the global coordinates from curvilinear coordinates of a beam line.

Detailed Description

A bunch distribution with a linear sweep in momentum in time.

Represents slow extraction beams.

Author: Laurie Nevay

Definition at line 32 of file BDSBunchSlowExt.hh.

Constructor & Destructor Documentation

◆ BDSBunchSlowExt()

BDSBunchSlowExt::BDSBunchSlowExt ( )

Definition at line 33 of file BDSBunchSlowExt.cc.

◆ ~BDSBunchSlowExt()

BDSBunchSlowExt::~BDSBunchSlowExt ( )

virtual

Definition at line 45 of file BDSBunchSlowExt.cc.

Member Function Documentation

◆ CheckParameters()

void BDSBunchSlowExt::CheckParameters ( )

virtual

Check the parameters for the given bunch distribution and exit if they're problematic or unphysical.

Reimplemented from BDSBunch.

Definition at line 80 of file BDSBunchSlowExt.cc.

References BDSBunch::CheckParameters().

Referenced by BDSBunchGaussSlowExtBase::CheckParameters().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ GetDeltas()

void BDSBunchSlowExt::GetDeltas	(	G4double &	dt,
		G4double &	dE
	)		const

Generate the random shift for this call. This function is const but it advances the static (global) random number generator.

Definition at line 100 of file BDSBunchSlowExt.cc.

Referenced by BDSBunchGaussSlowExtBase::GetNextParticleLocal(), and GetNextParticleLocal().

Here is the caller graph for this function:

◆ GetNextParticleLocal()

BDSParticleCoordsFull BDSBunchSlowExt::GetNextParticleLocal ( )

virtual

Each derived class can override this default method of reference position. If S0 > 0 or derived class changes member bool 'curvilinear' z0 will be treated as S and the global z0 be calculated.

Reimplemented from BDSBunch.

Definition at line 87 of file BDSBunchSlowExt.cc.

References BDSBunch::E0, GetDeltas(), BDSBunch::GetNextParticleLocal(), BDSBunch::S0, BDSBunch::T0, BDSBunch::X0, BDSBunch::Xp0, BDSBunch::Y0, BDSBunch::Yp0, BDSBunch::Z0, and BDSBunch::Zp0.

Here is the call graph for this function:

◆ SetOptions()

void BDSBunchSlowExt::SetOptions	(	const BDSParticleDefinition *	beamParticle,
		const GMAD::Beam &	beam,
		const BDSBunchType &	distrType,
		G4Transform3D	beamlineTransformIn = `G4Transform3D::Identity`,
		const G4double	beamlineS = `0`
	)

virtual

Extract and set the relevant options from the beam definition. The distribution type is explicitly required as this function may be used inside a nested bunch distribution. This argument is for the most part ignored, but there's no way to have a default for it. Also, some classes can cover multiple input distributions so need to know which one they're meant to be.

Reimplemented from BDSBunch.

Definition at line 48 of file BDSBunchSlowExt.cc.

References GMAD::BeamBase::dPStart, GMAD::BeamBase::dPStop, GMAD::BeamBase::dTStart, GMAD::BeamBase::dTStop, BDSBunch::E0, BDS::IsFinite(), BDSBunch::P0, BDSBunch::particleDefinition, and BDSBunch::SetOptions().

Referenced by BDSBunchGaussSlowExtBase::SetOptions().

Here is the call graph for this function:

Here is the caller graph for this function:

Field Documentation

◆ applyGradient

G4bool BDSBunchSlowExt::applyGradient

protected

Definition at line 58 of file BDSBunchSlowExt.hh.

◆ dE

G4double BDSBunchSlowExt::dE

protected

Definition at line 61 of file BDSBunchSlowExt.hh.

◆ dEStart

G4double BDSBunchSlowExt::dEStart

protected

Definition at line 60 of file BDSBunchSlowExt.hh.

◆ dPStart

G4double BDSBunchSlowExt::dPStart

protected

Definition at line 56 of file BDSBunchSlowExt.hh.

◆ dPStop

G4double BDSBunchSlowExt::dPStop

protected

Definition at line 57 of file BDSBunchSlowExt.hh.

◆ dT

G4double BDSBunchSlowExt::dT

protected

Definition at line 59 of file BDSBunchSlowExt.hh.

◆ dTStart

G4double BDSBunchSlowExt::dTStart

protected

Definition at line 54 of file BDSBunchSlowExt.hh.

◆ dTStop

G4double BDSBunchSlowExt::dTStop

protected

Definition at line 55 of file BDSBunchSlowExt.hh.

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

/__w/bdsim/bdsim/include/BDSBunchSlowExt.hh
/__w/bdsim/bdsim/src/BDSBunchSlowExt.cc

Public Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ BDSBunchSlowExt()

◆ ~BDSBunchSlowExt()

Member Function Documentation

◆ CheckParameters()

◆ GetDeltas()

◆ GetNextParticleLocal()

◆ SetOptions()

Field Documentation

◆ applyGradient

◆ dE

◆ dEStart

◆ dPStart

◆ dPStop

◆ dT

◆ dTStart

◆ dTStop