[ Identification | Description | Input parameters | Output parameters | Links ]
Guide Component
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.
The reflectivity profile may either use an analytical mode (see Component
Manual) or a 2-columns reflectivity free text file with format
[q(Angs-1) R(0-1)].
Example: Guide(w1=0.1, h1=0.1, w2=0.1, h2=0.1, l=2.0,
R0=0.99, Qc=0.021, alpha=6.07, m=2, W=0.003
%VALIDATION
May 2005: extensive internal test, no bugs found
Validated by: K. Lieutenant
%BUGS
This component does not work with gravitation on. Use component Guide_gravity then.
Example values: m=4 Qc=0.0219 W=1/300 alpha=6.49 R0=1
| Name | Unit | Description | Default |
|---|---|---|---|
| reflect | str | Reflectivity file name. Format [q(Angs-1) R(0-1)] | 0 |
| 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 | 0.99 |
| Qc | AA-1 | Critical scattering vector | 0.0219 |
| alpha | AA | Slope of reflectivity | 6.07 |
| m | 1 | m-value of material. Zero means completely absorbing. | 2 |
| W | AA-1 | Width of supermirror cut-off | 0.003 |
| Name | Unit | Description | Default |
|---|---|---|---|
| pTable |
Guide.comp.
[ Identification | Description | Input parameters | Output parameters | Links ]
Generated automatically by McDoc, Peter Willendrup <peter.willendrup@risoe.dk> / Fri May 11 08:41:08 2012