USRBDX does provide fluence/current for each angular bin in the *sum.lis
*tab.lis files; you only have to edit the format a bit such that you can
plot it with your favorite plotting program (not possible through Flair as
it takes the *tab.lis files as they are).
USRYIELD: the normalization depends on the double differential quantity
that you plot. Note that angular spectra refer to the beam direction for
this card and not the normal of the scoring surface (as for USRBDX)
If beam direction coincides with the surface normal I suggest that you use
both scoring possibilities with the same binning and convince yourself
that they give identical results by looking at the numerical data for a
few bins.
cheers
stefan
On Wed, 22 Jun 2016, mjm_at_jlab.org wrote:
> Grad student here - I think I've got a pretty good handle on using USRBDX
> to find an energy spectrum, but now I'd like to plot an angular spectrum -
> essentially, multiple angular bins, with one energy bin. I tried doing
> that with USRBDX, but it didn't give me any data. How can I plot USRBDX
> data with angle on the x-axis with multiple angular bins?
>
> It looks like this is easier to do with USRYIELD - I can just swap the
> places of energy and angle in quantities 1 and 2, and just score from 0 to
> pi. However, I've also noticed that in order to match up x-axis energy
> data from USRYIELD to USRBDX data, I need to multiply it by the solid
> angle covered (I'm looking for particle count per primary, rather than
> current per primary, so I leave the "area" field on USRBDX blank). So I'm
> wondering, what would the normalization factor be if I plot USRYIELD data
> with angle on the x-axis? Would I still multiply by the solid angle
> covered, or would it be by the energy covered instead? I ask because
> since I don't yet know how to plot vs. angle in USRBDX, I have nothing
> really to compare the results to.
>
> Thanks in advance.
>
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Received on Mon Jul 04 2016 - 20:26:09 CEST