[ Identification | Description | Input parameters | Links ]
Mirror_validation InstrumentComparison of Mirror component and a similar system made with Union components though with a key difference that a substrate is simulated which results in two effects: At large angles where no reflection occur, there will be some intensity from the scattering in the substrate. At very small angles, the reflectivity can exceed the R0 of the mirror coating, as the ray can be reflected by the Ni substrate. NCrystal is used to simulate the Ni substrate. The instrument includes a detector that ignores scattered rays, which should produce identical results for large angles, though there can still be a tiny discrepancy at small angles especially if R0 of the mirror coating is lowered. Example: mcrun Mirror_validation.instr angle=0.7
| Name | Unit | Description | Default |
| angle | deg | Rotation of sample | 0.4 |
| ref_component | 1 | 0 to use Union components, 1 for reference Mirror component | 0 |
| R0_value | 1 | Low-angle reflectivity | 0.99 |
| m_value | 1 | m-value of material | 3 |
| Qc_value | AA-1 | Critical scattering vector | 0.0219 |
| alpha_value | AA | Slope of reflectivity | 6.07 |
| W_value | AA-1 | Width of supermirror cut-off | 0.003 |
Mirror_validation.instr.
[ Identification | Description | Input parameters | Links ]
Generated for mcstas 3.6.1