Re: FLUKA: Energy deposition per region

[Alberto Fasso' <fasso@slac.stanford.edu>]

On Fri, 15 Dec 2000, Laurent APHECETCHE wrote:

> I want to have energy deposition on a region basis, and I would have
> used USRBIN card for that. But now I realize that in the .out file of
> the run, there is indeed some information about exactly that : 
[...]
> Is this the very same information I would get from USRBIN with
> (WHAT(1)=2) ? So can I safely ignore USRBIN card for that very purpose ?

The information is similar, but there are small differences.
If you use USRBIN with WHAT(1)=2. and WHAT(2)=208 or 211 you will
get the energy deposited in SELECTED regions, NOT NORMALIZED by volume,
and the results are printed on a selected output unit (as GeV per
region), in ASCII or binary format.
If you use SCORE with any of the WHAT(1-4)= 208 or 211, you will
get energy deposited in ALL regions, NORMALIZED by volume, and the
results are printed only in ASCII format on the main output (as
GeV per cm2).
The volumes used for normalization are those optionally input by the
user at the end of the geometry input, when IVOPT has been set =3
on the Geometry input card. If IVOPT=0 and no volumes have been input,
all volumes are assumed to be = 1.0, and the results are the same
as one would get with USRBIN,WHAT(1)=2.. 
Similar considerations apply for star density scoring. Note that
there is practically no limit to the number of requested USRBIN,
while SCORE allows you to score only up to a maximum  of 4 
quantities per run. 

> Any clue on how to get Displacement Per Atoms in FLUKA ? (see one of my
> previous e-mails) ?

I guess that the simplest, and maybe the only way, would be to score
spectral fluence (e.g. tracklength density) and to fold it with an
evaluated response function (I think that RSICC and the NEA Data Bank can
provide some). You can do the folding off-line, or on-line using
the user function FLUSCW.

  Alberto

-- 
Alberto Fasso'
Stanford Linear Accelerator Center
Radiation Physics Dept. ms 48, 2575 Sand Hill Road, Menlo Park, CA 94025
Tel. +1 650 926 4062        Fax: +1 650 926 3569
fasso@slac.stanford.edu