[ Identification | Description | Input parameters | Links ]

# The `Filter_graphite` Component

Pyrolytic graphite filter (analytical model)

## Identification

- Site:
- Author: Thomas C Hansen
- Origin: ILL
- Date: 07 March 2000

## Description

    ESCRIPTION

    This rectangular pyrolytic graphite filter uses an analytical model
    with linear interpolation on the neutron wavelength
    This type of filter is e.g. used to supress higher harmonics, such as
    the 1.2 AA contribution to the 2.4 AA obtained by a highly oriented
    pyrolytic graphite (HOPG) monochromator.

    Example: Filter_graphite(xmin=-.05, xmax=.05, ymin=-.05, ymax=.05, length=1.0)

## Input parameters

Parameters in boldface are required; the others are optional.

Name | Unit | Description | Default |
xmin | m | Lower x bound | -0.16 |
xmax | m | Upper x bound | 0.16 |
ymin | m | Lower y bound | -0.16 |
ymax | m | Upper y bound | 0.16 |
length | m | Thickness of graphite plate | 0.05 |
xwidth | m | Width of filter. Overrides xmin,xmax. | 0 |
yheight | m | Height of filter. Overrides ymin,ymax. | 0 |

AT ( | , | , |  | ) RELATIVE |  |
ROTATED ( | , | , |  | ) RELATIVE |

## Links

- Source code for `Filter_graphite.comp`.

[ Identification | Description | Input parameters | Links ]