impactx::diagnostics::NonlinearLensInvariants Struct Reference

#include <NonlinearLensInvariants.H>

Classes
struct	Data

Public Types
using	PType = ImpactXParticleContainer::ParticleType

Public Member Functions
	NonlinearLensInvariants (amrex::ParticleReal const alpha, amrex::ParticleReal const beta, amrex::ParticleReal const tn, amrex::ParticleReal const cn)
AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE Data	operator() (amrex::ParticleReal const x, amrex::ParticleReal const y, amrex::ParticleReal const px, amrex::ParticleReal const py) const

Private Attributes
amrex::ParticleReal	m_alpha
amrex::ParticleReal	m_beta
	Twiss alpha.
amrex::ParticleReal	m_tn
	Twiss beta (m)
amrex::ParticleReal	m_cn
	dimensionless strength of the nonlinear insert

Detailed Description

Compute invariants within the nonlinear magnetic insert element

Invariants associated with a single short segment of the nonlinear magnetic insert described by V. Danilov and S. Nagaitsev, PRSTAB 13, 084002 (2010), Sect. V.A.

Member Typedef Documentation

PType

using impactx::diagnostics::NonlinearLensInvariants::PType = ImpactXParticleContainer::ParticleType

Constructor & Destructor Documentation

NonlinearLensInvariants()

impactx::diagnostics::NonlinearLensInvariants::NonlinearLensInvariants ( amrex::ParticleReal const alpha, amrex::ParticleReal const beta, amrex::ParticleReal const tn, amrex::ParticleReal const cn )

inline

Initialize the parameters for the invariants based on the beam distribution and parameters of the nonlinear insert element

Parameters

alpha	- Twiss alpha for the bare lattice
beta	- Twiss beta for the bare lattice (m)
tn	- dimensionless strength of the nonlinear insert
cn	- scale parameter of the nonlinear insert (m^[1/2])

Member Function Documentation

operator()()

AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE Data impactx::diagnostics::NonlinearLensInvariants::operator() ( amrex::ParticleReal const x, amrex::ParticleReal const y, amrex::ParticleReal const px, amrex::ParticleReal const py ) const

inline

This is a nonlinear invariant functor, so that a variable of this type can be used like a nonlinear invariant function.

Parameters

x	particle position in x
y	particle position in y
px	particle momentum in x
py	particle momentum in y

Member Data Documentation

m_alpha

amrex::ParticleReal impactx::diagnostics::NonlinearLensInvariants::m_alpha

private

m_beta

amrex::ParticleReal impactx::diagnostics::NonlinearLensInvariants::m_beta

private

Twiss alpha.

m_cn

amrex::ParticleReal impactx::diagnostics::NonlinearLensInvariants::m_cn

private

dimensionless strength of the nonlinear insert

m_tn

amrex::ParticleReal impactx::diagnostics::NonlinearLensInvariants::m_tn

private

Twiss beta (m)

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

• /home/docs/checkouts/readthedocs.org/user_builds/impactx/checkouts/1182/src/diagnostics/NonlinearLensInvariants.H