[ 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		Generate
ROTATED (	,	,		) RELATIVE

Links

• Source code for Filter_graphite.comp.

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[ Identification | Description | Input parameters | Links ]

Generated on 2025-05-08 13:31:31

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Last Modified: Monday, 30-Jun-2025 11:05:11 CEST