The `Capillary` Component

A capillary tube

Identification

Site:
Author: Erik B Knudsen
Origin: DTU Physics
Date: July 2015

Description

A Capillary tube allowing for reflections along the tube. A material coating can be applied. Multilayer
coatings may be handled by generating a reflectivity file (e.g. by IMD) and setting rtable=1.
Waviness is implemented using the model described in
Wang et.al., J. Appl. Phys., 1996
where the grazing incidence angle $\theta$ is altered as
$\theta' = \theta + \delta \theta \in [-min(theta,\Delta\theta,\Delta\theta]$
This ensures that reflected rays will never be scattered into the capillary.
\Delta\theta is the value specified by the parameter waviness.

Example: Capillary(
radius=1e-4,length=0.1, R0=0, coating="Rh.txt")

Input parameters

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
coating	str	Name of file containing the material data (i.e. f1 and f2) for the coating	"Be.txt"
longw	0/1	If non-zero, waviness is purely longitudinal in its nature.	1
radius	m	Radius of curvature.	1
length	m	Length of the unbent mirror.	0.2
R0	0-1	Fixed constant reflectivity	0
rtable	0/1	If nonzero, the coating file contains an E,theta parameterized matrix of raw reflectivities.	0
waviness	rad	The momentaneous waviness is uniformly distributed in the range [-waviness,waviness].	0

AT (	,	,		) RELATIVE
ROTATED (	,	,		) RELATIVE

McXtrace - An X-ray ray-trace simulation package

The Capillary Component

Identification

Description

Input parameters

Links

The `Capillary` Component