Hello Francesco,
thanks a lot for your helpful and instructive answer. We wanted to make sure that we don't miss any specific physics card which would have allowed for this special kind of interaction treatment.
Have a nice evening
Chris
-----Original Message-----
From: Francesco Cerutti
Sent: 24 November 2015 17:53
To: Chris Theis <Christian.Theis_at_cern.ch>
Cc: fluka-discuss_at_fluka.org (fluka-discuss_at_fluka.org) <fluka-discuss_at_fluka.org>
Subject: Re: [fluka-discuss]: PEANUT for all energies & RELEASE NOTES 2011.2
Dear Chris,
I'd like to apologize for the pretty late answer.
Picking now up your two questions:
- The PEANUT model is indeed the recommended choice (successfully benchmarked for several cases), for the time being still *to be explicitly extended by the user* above its default energy limit (5 GeV) through the indicated PHYSICS card.
Concerning the remark about *individual model* validation/benchmarking publication, this is in general (beyond the specific PEANUT example) subject to prior written permission as stated in the license. But I do not see any contradiction between this publication right limitation and the PEANUT recommendation for production calculations application-oriented.
- Photonuclear reactions. For these unfortunately the PEANUT treatment at high energy is not an option (as you might have already realized), since PEANUT is not yet instructed to deal with the interaction of the virtual vector meson with the target nucleus. This means that, despite the above mentioned recommended PHYSICS/PEATHRES extension request, they are anyway treated by the old cascade model.
Cheers
Francesco
**************************************************
Francesco Cerutti
CERN-EN/STI
CH-1211 Geneva 23
Switzerland
tel. ++41 22 7678962
fax ++41 22 7668854
On Mon, 26 Oct 2015, Chris Theis wrote:
>
> Dear colleagues,
>
>
>
> in the slides of the hadron lecture given at the last FLUKA
> course(https://indico.cern.ch/event/365567/contribution/28/attachments
> /726813/997351/11_Hadron
> ic_Interactions_2015.pdf) it is mentioned that the PEANUT model has
> been extended to cover the whole energy range and that this extended
> model should be switched on if precise particle production
> calculations are of concern, even though the improved model is not yet default.
>
>
>
> At the same time the release notes contain the following paragraph:
>
>
>
> “Most of the physics improvements are brand new and still unpublished.
> This version should not be used to publish results about individual
> model validation/benchmarking (see the license), in particular but not only when the new features are concerned.”
>
>
>
> These two recommendations seem to be somewhat contradictory and we’re
> now wondering if the extended model has been benchmarked and should be switched on for “production”
> calculations as well as results that should be published. We would
> highly appreciate advice on how to proceed properly in this matter.
>
>
>
> Furthermore, the manual indicates how to activate PEANUT for all
> energies for hadrons but in my understanding it’s not clear how handle
> photonuclear interactions. The manual currently states:
>
> For SDUM = PEATHREShold:
>
> WHAT(1) : maximum PEANUT kinetic energy for nucleons (GeV)
>
> =< 0.0 : ignored
>
> WHAT(2) : maximum PEANUT kinetic energy for pions (GeV)
>
> =< 0.0 : ignored
>
> WHAT(3) : maximum PEANUT kinetic energy for kaons (GeV)
>
> =< 0.0 : ignored
>
> WHAT(4) : maximum PEANUT kinetic energy for kaonbars (GeV)
>
> =< 0.0 : ignored
>
> WHAT(5) : maximum PEANUT kinetic energy for antinucleons (GeV)
>
> =< 0.0 : ignored
>
> WHAT(6) : maximum PEANUT kinetic energy for (anti)hyperons (GeV)
>
> =< 0.0 : ignored
>
> Default (no PEATHREShold option): PEANUT is called up to 5 GeV
> kinetic
>
> energy for all hadrons
>
>
>
> The PHYSICS cards allows to switch on the new model (with some caveats
> about the quasielastic issue) eg with:
>
> PHYSICS 1000. 1000. 1000. 1000. 1000. 1000.
> PEATHRES
>
>
>
> Will photonuclear reactions profit automagically from the extended
> model if activated with the PHYSICS card parameters given above or
> does one have to add a specific card to have the benefit?
>
>
>
> Thanks for your help.
>
>
>
> Best regards
>
> Chris
>
> ----------------------------------------------------------------------
> ------------------
> -
> Chris Theis
> CERN/DGS-RP - European Organization for Nuclear Research
> 1211 Geneva 23, Switzerland
> e-mail: Christian.Theis_at_cern.ch www:
> http://www.cern.ch/theis
> ----------------------------------------------------------------------
> ------------------
> -
>
>
>
>
>
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Received on Tue Nov 24 2015 - 19:17:21 CET