Re: [fluka-discuss]: track averaged LET in a volume

From: Vittorio Boccone <dr.vittorio.boccone_at_ieee.org>
Date: Wed, 3 Dec 2014 15:24:53 +0100

I'm afraid yes.
V.

On Wed, Dec 3, 2014 at 3:02 PM, REDDELL, BRANDON D. (JSC-EV511) <
brandon.d.reddell_at_nasa.gov> wrote:

> Yes, that is what I am trying to get. After writing my last response, I
> was thinking this may be very complicated if I use something like mgdraw.
>
> Is this the user routine you are referring to or is there a more
> efficient one?
>
> Thanks for your help!
>
>
> On Dec 3, 2014, at 6:30 AM, Vittorio Boccone <dr.vittorio.boccone_at_ieee.org>
> wrote:
>
> Hi Brandon,
> them I misunderstood what you want to obtain. You want actually to obtain
> the LET averaged on all the primary and secondary tracks for all the
> particles of the shower generated by the primary event. Am I correct?
>
> Using DOSEQLET you will get back the Q(LET) relation which we use
> (ICRP60) where LET= LET(inf) in water.
> What you request can be done of course with an user routine.
>
> Vittorio
>
>
>
> On Wed, Dec 3, 2014 at 4:01 AM, REDDELL, BRANDON D. (JSC-EV511) <
> brandon.d.reddell_at_nasa.gov> wrote:
>
>> Thanks for the reply Vittorio. Yes, I have obtained the stopping power
>> tables as you describe, but I don't think that helps me for a volume where
>> I have a shower of charged particles passing through a volume, each
>> particle having different initial energies and path lengths through the
>> volume.
>>
>> Shouldn't this calculation be available somewhere since FLUKA can
>> provide DOSEQLET in a volume? If so, how can I get this LET? Could I score
>> both DOSE and DOSEQLET in the same volume, and use these values to get
>> average IRCP60 quality factor, then determine track-averaged LET from the
>> Q(LET) equations?
>>
>> Brandon
>>
>>
>> Sent from my iPhone
>>
>> On Dec 2, 2014, at 3:11 PM, Vittorio Boccone <
>> dr.vittorio.boccone_at_ieee.org> wrote:
>>
>> Dear Brandon,
>> the track averaged LET is in principle the stopping power.
>>
>> You can get the stopping power calculated by FLUKA for each
>> material using the DELTARAY. (See Manual 7.1.3.7 of the pdf,
>> or 7.12 of the ASCII + references therein)
>>
>> Best,
>> Vittorio
>>
>> On Tue, Dec 2, 2014 at 4:30 PM, REDDELL, BRANDON D. (JSC-EV511) <
>> brandon.d.reddell_at_nasa.gov> wrote:
>>
>>> Hello,
>>>
>>>
>>>
>>> I know how to use USRYIELD to get LET across a surface, is there a way
>>> to get track averaged LET over a volume (i.e. Delta-E/pathlength) in FLUKA?
>>>
>>>
>>>
>>> Brandon
>>>
>>
>>
>
Received on Wed Dec 03 2014 - 16:50:38 CET