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[ Identification | Description | Input parameters | Links ]
The Conics_PH Component
Release: McStas 2.7
Date: September 2021
Parabolid-Hyperbolic shells for Wolter optic
Identification
- Site:
- Author: Peter Wilendrup and Erik Knudsen
(derived from Giacomo Resta skeleton-component) - Origin: DTU
- Date: September 2021
Description
Implements a set of nshells Wolter I Paraboloid/Hyperboloid pairs using conics.h from ConicTracer. The component has two distinct modes of specifying the geometry: a) Via the radii vector, parametrized from largest to smallest radius with a length of 'nshells' b) By specifying radii rmax and rmin, between which a quadratic law distributes 'nshells' surfaces. The mirrors are assumed to be touching at the mid-optic plane, i.e. there is no gap between primary and secondary mirror.* By definition the ratio between primary and secondary mirror glancing angles is 1/3. At present a single m-value is used for all mirrors.
Input parameters
Parameters in boldface are required; the others are optional.| Name | Unit | Description | Default | |
| rmin | m | Midoptic plane radius of innermost mirror pair. | 0.325 | |
| rmax | m | Midoptic plane radius of outermost mirror pair. | 0.615 | |
| focal_length | m | Focal length of the mirror pairs. | 10.070 | |
| lp | m | Paraboloid mirror length. | 0.84 | |
| lh | m | Hyperboloid mirror length. | 0.84 | |
| nshells | 1 | Number of nested shells to expect | 4 | |
| m | 1 | Critical angle of mirrors as multiples of Ni. | 1 | |
| mirr_thick | m | Thickness of mirror shell surfaces - NOT YET IMPLEMENTED | 0 | |
| disk | Flag. If nonzero, insert a disk to block the central area within the innermost mirror. | 1 | ||
| radii | m | Optional vector of radii (length should match nshells) | NULL | |
| R0 | 1 | Reflectivity at Low angles for reflectivity curve approximation | 0.99 | |
| Qc | AA-1 | Critical scattering vector | 0.021 | |
| W | AA-1 | Width of supermirror cut-off | 0.003 | |
| alpha | AA | Slope of reflectivity for reflectivity curve approximation | 6.07 | |
| transmit | 1 | Fraction of statistics to assign to transmitted beam - NOT YET IMPLEMENTED | 0 |
| AT ( | , | , | ) RELATIVE | |||
|---|---|---|---|---|---|---|
| ROTATED ( | , | , | ) RELATIVE |
Links
- Source code for
Conics_PH.comp.
[ Identification | Description | Input parameters | Links ]
Generated on mcstas 3.6.1
