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

# The `Risoe_sans` Instrument

Test instrument for the Sans_spheres component. No guide / velocity selector etc. Will be developed further at at later time.

## Identification

- Site: tests
- Author: Kim Lefmann
- Origin: Risoe
- Date: 19th Dec 2003.
- Version: 1.4

## Description

    Very simple test instrument for the Sans_spheres component

    Example: mcrun SANS.instr r=100, PHI=1e-3, Delta_Rho=0.6, Sigma_a=50, Qmax=0.3

## Input parameters

Parameters in boldface are required; the others are optional.

Name | Unit | Description | Default
--- | --- | --- | ---
Lambda | AA | Mean wavelength of neutrons | 6
D_lambda | AA | Wavelength spread of neutrons | 0.05
r | AA | Radius of scattering hard spheres | 100
PHI | 1 | Particle volume fraction | 1e-3
Delta_Rho | fm/AA^3 | Excess scattering length density | 0.6
Sigma_a | m^-1 | Absorption cross section density at 2200 m/s | 50
Qmax | AA^-1 | Maximum momentum transfer | 0.3

## Links

- Source code for `Risoe_sans.instr`.
- *

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