[ Identification | Description | Input parameters | Links ]

# The `Reflectometer` Instrument

Simple reflectometer with two slits, a sample (either none, mirror or multilayer), and a detector. For use in the OMIC summer school 2012.

## Identification

- Site: e
- Author: Pia Jensen (bozack@bozack.dk)
- Origin: Niels Bohr Instute, University of Copenhagen
- Date: 13.08.2012

## Description

    This simple reflectometer consists of a source (using the standard PSI parameters
    for three Maxwellian distributions), on which the user can control the bandwidth
    by simply choosing a minumum and maximum value. Two slits handle the divergence
    distribution on the sample. The sample itself can either be an empty spot, a simple
    mirror, or a multilayer. A simple PSD detector is used for detecting the scattered
    beam. The scattering is in the horizontal plane.

    Example: mcrun reflectometer.instr <parameters=values>

## Input parameters

Parameters in boldface are required; the others are optional.

Name | Unit | Description | Default
lambda_min | AA | Minimum wavelength from source | 5.3
lambda_max | AA | Maximum wavelength from source | 5.45
slittranslation | m | Translation of slit (horizontal) | 0
sampletranslation | m | Sample translation (horizontal) | 0
slitwidth | m | Width of slit pinholes | 0.001
slitheight | m | Height of slit pinholes | 0.002
dist_source2slit | m | Distance between source and first slit | 1
dist_slit2slit | m | Distance between slits | 3.2
dist_slit2sample | m | Distance between second slit and sample | 0.18
dist_sample2detector | m | Distance between sample and detector | 2
sampletype | 1 | Sample type: 0 none, 1 mirror, 2+ multilayer | 1
samplesize | m | Side-length of the (quadratic) sample plate | 0.15
substratethickness | m | Thickness of the substrate | 0.003
MR_Qc | AA | Critical Q-vector length of mirror sample | 0.15
sampleangle | deg | Rotation angle of sample (theta) | 2.5
detectorangle | deg | Rotation angle of detector (2 theta) | 5

## Links

- Source code for `Reflectometer.instr`.

[ Identification | Description | Input parameters | Links ]