#include <Gaussian.H>

Public Member Functions
	Gaussian (amrex::ParticleReal lambdax, amrex::ParticleReal lambday, amrex::ParticleReal lambdat, amrex::ParticleReal lambdapx, amrex::ParticleReal lambdapy, amrex::ParticleReal lambdapt, amrex::ParticleReal muxpx=0.0, amrex::ParticleReal muypy=0.0, amrex::ParticleReal mutpt=0.0, amrex::ParticleReal meanx=0.0, amrex::ParticleReal meany=0.0, amrex::ParticleReal meant=0.0, amrex::ParticleReal meanpx=0.0, amrex::ParticleReal meanpy=0.0, amrex::ParticleReal meanpt=0.0, amrex::ParticleReal dispx=0.0, amrex::ParticleReal disppx=0.0, amrex::ParticleReal dispy=0.0, amrex::ParticleReal disppy=0.0, amrex::ParticleReal cutx=0.0, amrex::ParticleReal cuty=0.0, amrex::ParticleReal cutt=0.0)
void	initialize (amrex::ParticleReal bunch_charge, RefPart const &ref)
void	finalize ()
AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE void	operator() (amrex::ParticleReal &AMREX_RESTRICT x, amrex::ParticleReal &AMREX_RESTRICT y, amrex::ParticleReal &AMREX_RESTRICT t, amrex::ParticleReal &AMREX_RESTRICT px, amrex::ParticleReal &AMREX_RESTRICT py, amrex::ParticleReal &AMREX_RESTRICT pt, amrex::RandomEngine const &engine) const

Public Attributes
amrex::ParticleReal	m_lambdaX
amrex::ParticleReal	m_lambdaY
amrex::ParticleReal	m_lambdaT
amrex::ParticleReal	m_lambdaPx
	related position axis intercepts (length) of the phase space ellipse
amrex::ParticleReal	m_lambdaPy
amrex::ParticleReal	m_lambdaPt
amrex::ParticleReal	m_muxpx
	related momentum axis intercepts of the phase space ellipse
amrex::ParticleReal	m_muypy
amrex::ParticleReal	m_mutpt
amrex::ParticleReal	m_meanx
	correlation length-momentum
amrex::ParticleReal	m_meany
amrex::ParticleReal	m_meant
amrex::ParticleReal	m_meanpx
	spatial coordinates of centroid offset
amrex::ParticleReal	m_meanpy
amrex::ParticleReal	m_meanpt
amrex::ParticleReal	m_dispx
	momentum coordinates of centroid offset
amrex::ParticleReal	m_disppx
amrex::ParticleReal	m_dispy
amrex::ParticleReal	m_disppy
amrex::ParticleReal	m_cutX
	dispersion and its derivative
amrex::ParticleReal	m_cutY
amrex::ParticleReal	m_cutT

Constructor & Destructor Documentation

◆ Gaussian()

impactx::distribution::Gaussian::Gaussian	(	amrex::ParticleReal	lambdax,
		amrex::ParticleReal	lambday,
		amrex::ParticleReal	lambdat,
		amrex::ParticleReal	lambdapx,
		amrex::ParticleReal	lambdapy,
		amrex::ParticleReal	lambdapt,
		amrex::ParticleReal	muxpx = 0.0,
		amrex::ParticleReal	muypy = 0.0,
		amrex::ParticleReal	mutpt = 0.0,
		amrex::ParticleReal	meanx = 0.0,
		amrex::ParticleReal	meany = 0.0,
		amrex::ParticleReal	meant = 0.0,
		amrex::ParticleReal	meanpx = 0.0,
		amrex::ParticleReal	meanpy = 0.0,
		amrex::ParticleReal	meanpt = 0.0,
		amrex::ParticleReal	dispx = 0.0,
		amrex::ParticleReal	disppx = 0.0,
		amrex::ParticleReal	dispy = 0.0,
		amrex::ParticleReal	disppy = 0.0,
		amrex::ParticleReal	cutx = 0.0,
		amrex::ParticleReal	cuty = 0.0,
		amrex::ParticleReal	cutt = 0.0 )

inline

A Gaussian distribution

Return sampling from a 6D Gaussian distribution, optionally with truncation in each phase plane.

Parameters

lambdax,lambday,lambdat	phase space axis intercepts (position); for zero correlation, these are the related RMS sizes (in meters)
lambdapx,lambdapy,lambdapt	phase space axis intercepts (momentum)
muxpx,muypy,mutpt	correlation length-momentum
meanx,meany,meant	offsets of the mean (centroid) positions from those of the reference particle
meanpx,meanpy,meanpt	offsets of the mean (centroid) momenta from those of the reference particle
dispx,disppx,dispy,disppy	dispersion and its derivative in horizontal and vertical directions
cutx,cuty,cutt	dimensionless cut parameter (number of sigma) in each phase plane; a value of 0 means no truncation (default)

Member Function Documentation

◆ finalize()

void impactx::distribution::Gaussian::finalize ( )

inline

Close and deallocate all data and handles.

Nothing to do here.

◆ initialize()

void impactx::distribution::Gaussian::initialize	(	amrex::ParticleReal	bunch_charge,
		RefPart const &	ref )

inline

Initialize the distribution.

Nothing to do here.

Parameters

bunch_charge	charge of the beam in C
ref	the reference particle

◆ operator()()

AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE void impactx::distribution::Gaussian::operator()	(	amrex::ParticleReal &AMREX_RESTRICT	x,
		amrex::ParticleReal &AMREX_RESTRICT	y,
		amrex::ParticleReal &AMREX_RESTRICT	t,
		amrex::ParticleReal &AMREX_RESTRICT	px,
		amrex::ParticleReal &AMREX_RESTRICT	py,
		amrex::ParticleReal &AMREX_RESTRICT	pt,
		amrex::RandomEngine const &	engine ) const

inline

Return 1 6D particle coordinate

Parameters

x	particle position in x
y	particle position in y
t	particle position in t
px	particle momentum in x
py	particle momentum in y
pt	particle momentum in t
engine	a random number engine (with associated state)

Member Data Documentation

◆ m_cutT

amrex::ParticleReal impactx::distribution::Gaussian::m_cutT

◆ m_cutX

amrex::ParticleReal impactx::distribution::Gaussian::m_cutX

dispersion and its derivative

◆ m_cutY

amrex::ParticleReal impactx::distribution::Gaussian::m_cutY

◆ m_disppx

amrex::ParticleReal impactx::distribution::Gaussian::m_disppx

◆ m_disppy

amrex::ParticleReal impactx::distribution::Gaussian::m_disppy

◆ m_dispx

amrex::ParticleReal impactx::distribution::Gaussian::m_dispx

momentum coordinates of centroid offset

◆ m_dispy

amrex::ParticleReal impactx::distribution::Gaussian::m_dispy

◆ m_lambdaPt

amrex::ParticleReal impactx::distribution::Gaussian::m_lambdaPt

◆ m_lambdaPx

amrex::ParticleReal impactx::distribution::Gaussian::m_lambdaPx

related position axis intercepts (length) of the phase space ellipse

◆ m_lambdaPy

amrex::ParticleReal impactx::distribution::Gaussian::m_lambdaPy

◆ m_lambdaT

amrex::ParticleReal impactx::distribution::Gaussian::m_lambdaT

◆ m_lambdaX

amrex::ParticleReal impactx::distribution::Gaussian::m_lambdaX

◆ m_lambdaY

amrex::ParticleReal impactx::distribution::Gaussian::m_lambdaY

◆ m_meanpt

amrex::ParticleReal impactx::distribution::Gaussian::m_meanpt

◆ m_meanpx

amrex::ParticleReal impactx::distribution::Gaussian::m_meanpx

spatial coordinates of centroid offset

◆ m_meanpy

amrex::ParticleReal impactx::distribution::Gaussian::m_meanpy

◆ m_meant

amrex::ParticleReal impactx::distribution::Gaussian::m_meant

◆ m_meanx

amrex::ParticleReal impactx::distribution::Gaussian::m_meanx

correlation length-momentum

◆ m_meany

amrex::ParticleReal impactx::distribution::Gaussian::m_meany

◆ m_mutpt

amrex::ParticleReal impactx::distribution::Gaussian::m_mutpt

◆ m_muxpx

amrex::ParticleReal impactx::distribution::Gaussian::m_muxpx

related momentum axis intercepts of the phase space ellipse

◆ m_muypy

amrex::ParticleReal impactx::distribution::Gaussian::m_muypy

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

/home/docs/checkouts/readthedocs.org/user_builds/impactx/checkouts/latest/src/particles/distribution/Gaussian.H

Public Member Functions

Public Attributes

Constructor & Destructor Documentation

◆ Gaussian()

Member Function Documentation

◆ finalize()

◆ initialize()

◆ operator()()

Member Data Documentation

◆ m_cutT

◆ m_cutX

◆ m_cutY

◆ m_disppx

◆ m_disppy

◆ m_dispx

◆ m_dispy

◆ m_lambdaPt

◆ m_lambdaPx

◆ m_lambdaPy

◆ m_lambdaT

◆ m_lambdaX

◆ m_lambdaY

◆ m_meanpt

◆ m_meanpx

◆ m_meanpy

◆ m_meant

◆ m_meanx

◆ m_meany

◆ m_mutpt

◆ m_muxpx

◆ m_muypy