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McXtrace - An X-ray ray-trace simulation package

ESRF; SAXSLAB Niels Bohr Institute DTU Physics

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McXtrace: Multilayer_elliptic Component

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

The Multilayer_elliptic Component

Elliptic multilayer mirror

Identification

  • Author: Jana Baltser, Peter Willendrup, Anette Vickery, Andrea Prodi, Erik Knudsen
  • Origin: NBI
  • Date: February 2011
  • Version: 1.0

Description

Reads reflectivity values from a data input file (Ref.dat) for a Si/W multilayer.
The multilayer code reflects ray in an ideal geometry, does not include surface imperfections

The mirror is positioned such that the long axis of the mirror elliptical surface coincides with
z-axis

The algorithm:
 Incoming photon's coordinates and direction (k-vector) are transformed into an elliptical reference frame 
(elliptical parameters are calculated according to the mirror's position and its focusing distances and the  * incident angle), the intersection point is then defined. A new, reflected photon is then starting at the  
point of intersection.


Input parameters

Parameters in boldface are required; the others are optional.
Name Unit Description Default
reflectivity_datafile "reflectivity.txt"
theta degrees - incident angle 1.2
s1 m - distance from the source to the multilayer  
s2 m - focusing distance of the multilayer  
length m - length of the mirrors 0.5
width m - width of the mirror along x-axis 0.2
R0 1

Output parameters

Name Unit Description Default
prms_m  
a  
b  
c  
M  
Z0  
Y0  
xi  
cost0  

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

Generated automatically by McDoc, Peter Willendrup <peter.willendrup@risoe.dk> / Wed Aug 16 00:25:17 2017


Last Modified: Wednesday, 16-Aug-2017 02:25:17 CEST
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