McXtrace - An X-ray ray-trace simulation package

[ Identification | Description | Input parameters | Links ]

The Filter Component

Block of an attenuating material

Identification

• Site:
• Author: Erik Knudsen
• Origin: DTU Physics
• Date: Jan 24, 2011

Description

A chunk of attenuating material. Attenuation is computed through
the effective length travelled within the material.
No scattering is modelled at present.

Filter shape may be a cylinder, a sphere, a box or any other shape.
box/plate:       xwidth x yheight x zdepth
cylinder:        radius x yheight (along Y axis)
sphere:          radius
any shape:       geometry=OFF/PLY_file

Example: Filter(material_datafile="Ge.txt",
geometry="wire.ply",xwidth=0.02,yheight=0,zdepth=0)

Input parameters

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
refraction		If nonzero, refraction is enabled. (0/1)	1
fixed_delta		Use a fixed delta to compute refraction - useful for debugging. ( )	0
material_datafile		File where the material parameters for the filter may be found. Format is similar to what may be found off the NIST website. [Be.txt]	"Be.txt"
geometry		File containing the polygon definition of a general shape object. When xwidth is also given, the object is rescaled accordingly (OFF/PLY)	0
xwidth		Width of block. (m)	0
yheight		Height of block. (m)	0
zdepth		Thickness of block. (m)	0
radius		Radius of cylinder or sphere. (m)	0

AT (	,	,		) RELATIVE		Generate
ROTATED (	,	,		) RELATIVE

Links

• Source code for Filter.comp.
• Meshlab https://www.meshlab.net/
• Geomview and Object File Format (OFF)
• Java version of Geomview (display only) jroff.jar
• qhull
• Powercrust https://www.cs.ucdavis.edu/~amenta/powercrust.html
• material datafile obtained from http://physics.nist.gov/cgi-bin/ffast/ffast.pl

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[ Identification | Description | Input parameters | Links ]

Generated on 2023-12-19 19:49:14

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Last Modified: Tuesday, 17-Sep-2024 05:33:15 CEST