[fluka-discuss]: problem with the annular beam spot

From: ±ΟΤΆ½ά <biyuanjie_at_tsinghua.org.cn>
Date: Wed, 21 Jan 2015 13:00:00 +0800 (CST)

Dear Fluka experts,

I wrote a circular surface source with R of 11.29, using the BEAM and BEAMPOS cards:

BEAM -0.00125 11.29 0.0 -1.0PHOTON
BEAMPOS 200. 0.0 0.0 -1. 0.0 NEGATIVE

But the result is not the same as I expected. When I use USRBIN to record the source distribution,
it gives a strange map as attached in the file. Does anyone know what is the problem?



USRBIN 10. PHOTON -40. 111. 20. 20.tet
USRBIN 110. -20. -20. 1. 50. 50. &

Many thanks
Best wishes
Yuanjie BI





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albedo_40_plot.png
(image/png attachment: albedo_40_plot.png)

Received on Wed Jan 21 2015 - 09:04:53 CET

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