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

# The `FZJ_KWS2_Lens` Instrument

FZ Juelich KWS2 SANS, serving as test instrument for the Lens_simple component.

## Identification

- Site: FZ_Juelich
- Author: Henrich Frielinghaus
- Origin: FZ Juelich
- Date: June 2010
- Version:(Unknown)

## Description

    This instrument is a test instrument for the Lens_simple component.

    Notice effect of gravitation on the final beam.

    Example: mcrun FZJ_KWS2_Lens.instr lambda=3.4

## Input parameters

Parameters in boldface are required; the others are optional.

Name | Unit | Description | Default
--- | --- | --- | ---
lam | AA | Mean wavelength of neutrons | 20.15
dlam | AA | Wavelength spread of neutrons (fwhm) | 2.015
FLUX | 1 | Source flux normalization constant | 1e8
NGblen | 1 | Defining source radius (is \sqrt(2)*NGblen) | 0.03
Cblen | m | Dimension of rectangular guide | 0.005
Clen | m | Distance source-guide | 20.0
Dlen | m | Placement of final detector | 20.0
Rlense | m | Radius of lense | 0.025

## Links

- Source code for `FZJ_KWS2_Lens.instr`.
- The Lens_simple component

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