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The Wiggler Component

Model of a wiggler source

Identification

• Author: Erik B. Knudsen
• Origin: DTU Physics
• Date: May, 2013.

Description

A source model based on the derivation from B.D. Patterson, Am. J. Phys. 79, 1046 (2011); doi: 10.1119/1.3614033

Example: Wiggler(
E0 = 14, dE = 12,
Ee = 2.75, Ie = 0.5, B = 2.1, K=10, Nper=41, sigey=9.3e-6, sigex=215.7e-6)

Input parameters

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
E0	keV	Center of emitted energy spectrum (overrides lambda0)	0
dE	keV	Half-width of emitted energy spectrum	0
lambda0	AA	Center of emitted wavelength spectrum	0
dlambda	AA	Half-width of emitted wavelength spectrum	0
phase	rad	Initial phase of radiation.	0
randomphase	0/1	If !=0 phase will be random (I.e. the emitted radiation is completely incoherent)	1
Ee	GeV	Storage ring electron energy (typically a few GeV)	2.4
Ie	A	Ring current	0.4
B	T	Peak magnet field strength	1.6
K	1	Dimensionless undulator parameter, e.g. K >> 1. overrides B.	3
Nper	int	Number of magnetic periods in the wiggler	1
length	m	Length of the Wiggler.	1
sigey	m	Electron ring beam size in vertical plane (rms)	0
sigex	m	Electron ring beam size in horizontal plane (rms)	0
focus_xw	m	Width of target window	0
focus_yh	m	Height of target window	0
dist	m	Distance from source plane to target window along the optical axis	1
gauss_t	0/1	If 0 the target window will be sampled uniformly and the weight adjusted accordingly, otherwise we will use a gaussian sampling scheme.	0
verbose	0/1	If nonzero, output extra information	0
Br	T	Remanent field of the permanent magnet material	1.35

AT (	,	,		) RELATIVE		Generate to clipboard
ROTATED (	,	,		) RELATIVE

Links

• Source code for Wiggler.comp.

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[ Identification | Description | Examples | Input parameters | Links ]

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Last Modified: Monday, 02-Nov-2026 22:21:08 CET