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Forum: Physics List
Re: Question High energy ion projectiles in cosmic ray simulation (Nicola Mori)
Date: 16 Oct, 2013
From: Nicola Mori <Nicola Mori>

Thank you very much Vladimir, I'll give it a shot.


On 16/10/2013 21:47, Vladimir IVANTCHENKO wrote:
> Hello,
> I would suggest to try out Geant4 10.0beta - for this version a full FTF
> model for ion/ion was released. Physics List would be, for example,
> FTFP_BERT. It is the best what we can propose for today for high energy
> ions.
> VI
> On Wed, 16 Oct 2013, Nicola Mori wrote:
>> *** Discussion title: Physics List
>> Hello, for my experiment I must simulate high-energy cosmic-ray ion
>> projectiles impinging on my detector, let's say up to Fe. The energy
>> range I need to cover goes up to some hundred of GeV/n, and I'm
>> wondering whether Geant4 physics is reliable or not for such kind of
>> use-case. I see that using QGSP_FTFP_BERT physics list in version 9.6,
>> for example, ion physics is available up to 100 TeV:
>> Hadronic Processes for <GenericIon> -----------------------------------
>> ionInelastic Models: Binary Light Ion Cascade: Emin(GeV)= 0 Emax(GeV)= 4
>> FTFP: Emin(GeV)= 2 Emax(GeV)= 100000 ionInelastic Crs sctns:
>> Glauber-Gribov nucleus nucleus: Emin(GeV)= 0 Emax(GeV)= 100000
>> GheishaInelastic: Emin(GeV)= 0 Emax(GeV)= 100000
>> My question is: can I really trust this model up to 100 TeV? I know this
>> is a pretty dumb question but I would need some rule-of-thumb to decide
>> how much I can go up in energy without falling into a regime where
>> things are known to be broken. I'll also be grateful to anyone pointing
>> me to any validation studies done at such high energies for ion
>> projectiles (even against other simulation codes like Fluka), if there
>> are any. Thanks.
>> -------------------------------------------------------------
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