Re: [fluka-discuss]: USRBIN units

From: Paola Sala <>
Date: Fri, 6 Sep 2019 17:50:04 +0200

what you get is, for each z, the AVERAGE value of the scored quantity
within the x and y limits you choose. This is valid for all usrbin types,
energy, fluence, activity etc.
The values in the projection fielsd depend on your setup. You can safely
average over regions where your "value" is uniform, but if you look for
peak values you'll have to limit the range. Try to make 2-D plots or
projections on the three axis to get an idea, and try to vary the range
and look at stability of results. There is no universal recipy.
Hope this helps
> Hello everyone!
> I am a bit confused with the USRBIN card. I am trying to calculate the
> ambient dose-eq for cyclotron shielding analysis. My question is what
> exactly I get to plot when I changing the projection limits, in the case
> of 1D and 2D plots? By changing the projection limits I mean to change
> the values of the limits of x and y axis if i want to see the change in z
> direction, as shown on the attached picture. Does it normalize it to the
> volume of bins or I get an integral quantity for a particular volume (the
> volume of a single bin)? Since the variation of the projection limits, of
> the axis leads to change of the results I get.
> I would also appreciate any guide for choosing correct values in the
> projection fields.
> Thank you in advance!
> Angel
> --

Paola Sala
INFN Milano
tel. Milano +39-0250317374
tel. CERN +41-227679148

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Received on Fri Sep 06 2019 - 19:09:02 CEST

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