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

The Guide component

Neutron guide.

Identification

Description

Models a rectangular guide tube centered on the Z axis. The entrance lies
in the X-Y plane.
For details on the geometry calculation see the description in the McStas
reference manual.

Example values: m=4 Qc=0.02 W=1/300 alpha=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  
l m length of guide  
R0 1 Low-angle reflectivity  
Qc AA-1 Critical scattering vector  
alpha AA Slope of reflectivity  
m 1 m-value of material. Zero means completely absorbing.  
W AA-1 Width of supermirror cut-off  

Output parameters

None.

Links

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

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