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

The Channeled_guide component

Neutron guide with channels (bender section).

Identification

Description

Models a rectangular guide tube centered on the Z axis. The entrance lies
in the X-Y plane.
The guide may be tapered, and may have vertical subdivisions (used for
bender devices).

Example values: mx=4 my=2 Qcx=Qcy=0.02 W=1/300 alphax=alphay=6.49 R0=1

Input parameters

Parameters in boldface are required; the others are optional.
Name Unit Description Default
w1 m Width at the guide entry  
h1 m Height at the guide entry  
w2 m Width at the guide exit  
h2 m Height at the guide exit  
d m Thickness of subdividing walls  
k 1 Number of channels in the guide (>= 1)  
l m Length of guide  
R0 1 Low-angle reflectivity  
Qcx AA-1 Critical scattering vector for left and right vertical mirrors in each channel  
Qcy AA-1 Critical scattering vector for top and bottom mirrors  
alphax AA Slope of reflectivity for left and right vertical mirrors in each channel  
alphay AA Slope of reflectivity for top and bottom mirrors  
mx 1 m-value of material for left and right vertical mirrors in each channel. Zero means completely absorbing.  
my 1 m-value of material for top and bottom mirrors. Zero means completely absorbing.  
W AA-1 Width of supermirror cut-off for all mirrors  

Output parameters

Name Unit Description Default
w1c  
w2c  
ww  
hh  
whalf  
hhalf  
lwhalf  
lhhalf  

Links

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

Generated automatically by McDoc, Kristian Nielsen <kristian.nielsen@risoe.dk> / Jan 22 2001