Re: Clarification of DOSE-EQ units in a USRBIN estimator

Minor correction to what I wrote below:

For region-dependent USRBIN scoring the region volume is *never* taken
into account by FLUKA, even if entered explicitely in the geometry
section. Thus, scoring results for region-dependent scoring are always,
e.g., total energy, total track-length, dose equivalent times cm3, etc.

Cheers
Stefan

On Sun, 15 Apr 2012, Stefan Roesler wrote:

> Dear Mina
>
> USRBIN scoring of fluence is in units of particles/cm2 per unit primary
> weight. Here, region-dependent scoring needs either volume input or off-line
> division by the volume by the user. Note, that FLUKA internally scores
> track-length (cm/primary) and only the division by the scoring volume
> (automatically for region-independent meshes, by the user in case of
> region-dependent scoring) gives fluence (=track-length density).
>
> Scoring of DOSE-EQ means (on-line) folding of fluence with conversion
> coefficients that carry the unit pSv*cm2. Thus, the output of USRBIN/DOSE-EQ
> is in units of pSv per unit primary weight (/cm2/primary * pSv*cm2)
>
> As you correctly mention, if USRBIN scoring refers to residual radiation
> (irradiation profile defined and scoring assocciated with a cooling time) all
> quantities are rates, i.e. fluence rate (particles/cm2/s) or dose equivalent
> rate (pSv/s).
>
> Cheers
> Stefan
>
>
> On Thu, 12 Apr 2012, Mina Nozar wrote:
>
>> Dear FLUKA users, can someone confirm whether the following statements are
>> correct?
>>
>> - USRBIN scoring (spacial binning)
>> pSv/cm^3*prim - with no IRRPROF card
>> pSv/cm^3*sec - with an IRRPROF card
>>
>>
>> - USRBIN scoring (region binning)
>> pSv/prim - with no IRRPROF card and with no volume input for the given in
>> the geometry section)
>> pSv/sec - with an IRRPROF card and with no volume input for the given in
>> the geometry section)
>>
>>
>> pSv/prim - with no IRRPROF card and with the region volume given in the
>> geometry section)
>> pSv/sec - with an IRRPROF card and with the region volume given in the
>> geometry section)
>>
>>
>> So regardless of whether region volumes are given in the geometry section,
>> units are pSv/prim or pSv/sec in the region
>> binning? This is how I interpret the manual under USRBIN:
>>
>>
>> 13) The results from USRBIN are normalised per unit volume and per unit
>> primary weight, except for region binnings and special user-defined
>> binnings, which are normalised per unit primary weight only, for
>> DPA, which are given as number of displacements per atom per unit
>> primary weight, averaged over the bin volume, and for dose
>> <==============
>> equivalent, expressed as pSv per unit primary weight.
>> <==============
>> In case symmetries are requested, proper rescaled volumes are taken
>> into account for normalisation (that is, an extra factor 2 is
>> applied to the volume if symmetry around one plane is required, 8 if
>> the symmetry is around the origin)
>>
>>
>> Thank you for the clarification,
>> Mina
>>
>>
>
Received on Mon Apr 23 2012 - 09:23:04 CEST