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

The Tomography Instrument

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

Identification

Description

Instrument to study tomographic imaging by means of the new V_sample 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 string Detector Monitor_nD options "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 Sep 5 11:20:18 2018