Dear FLUKA experts,
Question 1
I am aiming to calculate a dose equivalent of x-ray spectrum passing through a shield of a chosen material and measured by a detector behind the shield.
To achieve it, I am using USRBIN (and USRTRACK) cards (for calculating dose equivalent I am considering AUXSCORE card with AMB74 parameter in the future). Fluka manual for USRBIN:
specifies in Notes point 5. that the default unit of a dose original measurement result is GeV/g:
[please see att.1]
It also provides a constant to multiply by in order to obtain the result in Gy (regardless of mass). This kind of mass independence is what I would like to obtain in my dose equivalent result, too. However, in Notes point 9. the default unit is “per unit primary weight”, but it lacks this constant. Do you know the value of this constant or should I better transform my dose results in Gy to dose equivalent in Sv outside of Fluka?
My particles are photons (30-140 kVp) and my tissue in dose equivalent (different from material of my shield and of my detector) is human body.
Question 2
As a beam source I am using energy histogram: set of energy values with their intensities (see histogram_71kVp.txt attached). I would like to obtain a similar data (2 columns of data: each energy with its corresponding intensity) in “output” of the simulation = in detector area behind the shield.
Could you please advise if such data is visible somewhere in .out or .bnn result file? I would be grateful for indicating the exact place. I have found my “input” data (which has same values as my input source histogram):
[please see att.2]
but cannot find similar “output” data.
Question 3
I obtained (after merging results from particular Cycles with Process button) four files with results data:
[please see att.3]
Files sum.lis and tab.lis are accesible with Viewer button. What concerns me - in relation to question 2 - is that there are no physically meaningful results with E below 71 keV, but non-zero:
[please see att.4 to att.6]
Could you please provide a hint what may be wrong in my code (attached)? “Input” source data - as presented above - do get implemented correctly, but “output” results seem not to be calculated. Perhaps some parameters (“Unit”?) in scoring cards should be chosen differently:
[please see att.7]
I would be grateful for some advice and would like to excuse should some questions be obvious, since this is my first simulation in Fluka.
cat.flair (1.3 KB)
cat.inp (1.6 KB)
cat.out (1.9 KB)
source_newgen.f (20.8 KB)
histogram_71kVp.txt (890 Bytes)