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

The Tomography Instrument

Instrument to study tomographic imaging by means of the feature of OFF shape samples.

Identification

Description

Instrument to study tomographic imaging by means of the feature of OFF shape samples.

Example: mcrun Tomography.instr offfile=bunny.off -n1e4 -N18 omega=0,340 -d TomoScan
(Note that to achieve proper statistics for tomographic reconstruction, MUCH higher ncounts
 are needed)

Use the provided Matlab tomo_recon.m function (requires imaging toolbox, PGPLOT output data
and a Unix/Mac) in the tools/matlab folder to reconstruct a 3D volume of the object. Use e.g. 
isosurface to do thresholding for extraction of the object surface.


Input parameters

Parameters in boldface are required; the others are optional.
Name Unit Description Default
geometry string Name of the OFF file describing the sample shape "socket.off"
omega deg Sample rotation around y 0
sigma_abs barn Sample absorption xs 100
frac_scatt 1 Fraction of neutrons to scatter in the sample 0
div_v angular height [deg] Source vertical divergence 1e-4
div_h angular width [deg] Source horisontal divergence 1e-4
source_w m Source width 0.4
source_h m Source height 0.2
det_w m Detector width 0.4
det_h m Detector height 0.2
opts "x bins=80 y bins=40"

Links


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

Generated automatically by McDoc, Peter Willendrup <peter.willendrup@risoe.dk> / Wed Nov 23 21:27:14 2022