Re: PLA Interpreted body echo

Dear Lauri,

It is not a flaw. There are two "body echoes" in .out: one before FLUKA
interpretation, and another after FLUKA interpretation. Whereas the former
prints the numbers as given by the user in the input file, the latter
doesn't necessarily do so.

Your -47.02500 comes from 0.5*0.94050000E+02.
This is more obvious in a simpler example shown below, where 1, -2, , 1,
-3, 1, -4 are the respective distance from the unit vector after
rearrangement of equation.

.inp
====
PLA B1 1. 0. 0. -1. 0. 0.
PLA B2 1. 0. 0. 2. 0. 0.
PLA B3 0. 1. 0. 0. -1. 0.
PLA B4 0. 2. 0. 0. 3. 0.
PLA B5 0. 0. 1. 0. 1. -1.
PLA B6 0. 0. 3. 0. 1. 4.

ECHO BEFORE INTERPRETATION
==========================
    PLA B1 3 0.10000000E+01 0.00000000E+00 0.00000000E+00 -0.10000000E+01 0.00000000E+00 0.00000000E+00 25
    PLA B2 4 0.10000000E+01 0.00000000E+00 0.00000000E+00 0.20000000E+01 0.00000000E+00 0.00000000E+00 35
    PLA B3 5 0.00000000E+00 0.10000000E+01 0.00000000E+00 0.00000000E+00 -0.10000000E+01 0.00000000E+00 45
    PLA B4 6 0.00000000E+00 0.20000000E+01 0.00000000E+00 0.00000000E+00 0.30000000E+01 0.00000000E+00 55
    PLA B5 7 0.00000000E+00 0.00000000E+00 0.10000000E+01 0.00000000E+00 0.10000000E+01 -0.10000000E+01 65
    PLA B6 8 0.00000000E+00 0.00000000E+00 0.30000000E+01 0.00000000E+00 0.10000000E+01 0.40000000E+01 75
    END 9 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 85

ECHO AFTER INTERPRETATION
=========================
   Body n. 3 PLA B1 Rot. 0 1.000000 0.000000 0.000000 1.000000
   0.000000 0.000000
   Body n. 4 PLA B2 Rot. 0 1.000000 0.000000 0.000000 -2.000000
    0.000000 0.000000
   Body n. 5 PLA B3 Rot. 0 0.000000 1.000000 0.000000 1.000000
   0.000000 0.000000
   Body n. 6 PLA B4 Rot. 0 0.000000 1.000000 0.000000 -3.000000
   0.000000 0.000000
   Body n. 7 PLA B5 Rot. 0 0.000000 0.000000 1.000000 1.000000
   0.000000 0.000000
   Body n. 8 PLA B6 Rot. 0 0.000000 0.000000 1.000000 -4.000000
   0.000000 0.000000

:) mary

On Wed, 16 May 2012, Rintala Lauri wrote:

> Hi,
>
> I'm struggling with geometry problems and ran into a flaw in fluka
> geometry output. The interpreted body echo in the .out-file is
> inconsistent with input, at least with PLA-bodies, but this is probably
> only output problem since flair draws geometry right and results are
> reasonable. Below is one example from my case:
>
> PLA r1 68 -0.86602540E+00 0.50000000E+00 0.00000000E+00
> 0.00000000E+00 0.94050000E+02 0.00000000E+00 675
>
> Interpreted body echo
> Body n. 68 PLA r1 Rot. 0
> -0.8660254 0.5000000 0.000000
> -47.02500 0.000000 0.000000
>
>
> The intersection with x-axis happens actually at 54.29979, now it is just
> half of the y-value of input line.
>
> Sincerely,
> -Lauri Rintala
>
>
Received on Wed May 16 2012 - 22:10:12 CEST