Re: [fluka-discuss]: beam position

From: Andrea Cowley <acowley_at_jlab.org>
Date: Mon, 3 Aug 2015 14:01:07 -0400 (EDT)

Roxana,

I opened up your input file in flair and noticed that it has some geometry
errors at x-layer 30 around the thin walls on the right, interior side.
Also, if you are having trouble with positioning the beam, it can be
helpful to do a single run with a small number of particles with your
USRBIN card set to detect BEAMPART. That should allow you to visualize the
changes to your BEAMPOS card.

Best of luck,

Andrea
acowley_at_jlab.org

> Dear FLUKA experts,
>
> I have to calculate the neutron dose coming up from an Al beam tube. I
> placed the beam tube in the right side of the room, as the proton beam is
> coming from the right. I've set the beam parameters using the BEAMPOS
> card, but I am not sure if is working or not, because my final results
> showed that the highest dose occurs in the left side of the room and not
> in the right. In the left side should be only air and nothing else.
> Could someone check my geometry and see that I am doing wrong? Maybe I
> didn't place the beam tube correctly?
> I attached my input and one of the plots with the dose.
> Should be better to use a source file to set the beam parameters? If yes,
> could someone help me with this as I didn't use a source file before?
>
> Thank you!
>
> Regards,
>
> Roxana
> University of Huddersfield inspiring tomorrow's professionals.
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Received on Mon Aug 03 2015 - 21:26:33 CEST

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