RE: [fluka-discuss]: DPMJET link

From: Francesco Cerutti <Francesco.Cerutti_at_cern.ch>
Date: Mon, 23 Jan 2017 09:29:30 +0100

Hi

as printed in any output file produced by linking the RQMD and DPMJET
libraries, the BME-RQMD threshold is 125 MeV/n +- 25 MeV/n. This means
that the threshold is set at 125 MeV/n, but it's not sharp, i.e. BME and
RQMD are both used - with complementary frequencies (fifty-fifty at 125
MeV/n) - in the range between 100 and 150 MeV/n.
Therefore one should link RQMD and DPMJET libraries in case of
nucleus-nucleus interactions above 100 MeV/n

Cheers

Francesco

**************************************************
Francesco Cerutti
CERN-EN/STI
CH-1211 Geneva 23
Switzerland
tel. ++41 22 7678962
fax ++41 22 7668854

On Mon, 23 Jan 2017, Masoomeh Yarmohammadi Satri wrote:

> Many thanks. Could you please inform me about the threshold of energy for using BME and
> starting to use
> RQMD and DPMJET link?
>
> Best Regards,
> Masoomeh
>
> _______________________________________________________________________________________________
> From: Santana, Mario [msantana_at_slac.stanford.edu]
> Sent: 23 January 2017 08:10
> To: Masoomeh Yarmohammadi Satri; fluka-discuss_at_fluka.org
> Subject: Re: [fluka-discuss]: DPMJET link
>
> Hi Masoometh,
>
> †
>
> For 250 MeV/u I believe you canít use BME. The reply you may be referring at quotes 110 MeV/u,
> though, which then would be OK, but in your original message with subject DPMJET link you
> mentioned a higher value, so it will all depend which energy you actually need.
>
> †
>
> -Mario
>
> †
>
> From: Masoomeh Yarmohammadi Satri <masoomeh.yarmohammadi.satri_at_cern.ch>
> Date: Sunday, January 22, 2017 at 10:47 PM
> To: "Santana, Mario" <msantana_at_slac.stanford.edu>, fluka-discuss <fluka-discuss_at_fluka.org>
> Subject: RE: [fluka-discuss]: DPMJET link
>
> †
>
> Dear Mario,
>
> According to the reply, I received from the question in the Flukadiscuss with the title: Carbon
> beam-DPMJET link, I don't need to make the link and the run can be handled with BME that is
> already in the standard library.
>
>
> Best regards,
> Masoomeh
>
>
> _______________________________________________________________________________________________
>
>
> From: Santana, Mario [msantana_at_slac.stanford.edu]
> Sent: 23 January 2017 03:36
> To: Masoomeh Yarmohammadi Satri; fluka-discuss_at_fluka.org
> Subject: Re: [fluka-discuss]: DPMJET link
>
> Hi Masoometh,
>
> †
>
> Not sure if this comes too late.
>
> If you are using ion beams in excess of 150 MeV/u (and below 5 GeV/u), you want to use RQMD,
> thus you must run the executable that you obtain after typing the following in your terminal
>
> $FLUPRO/flutil/ldpmqmd
>
> You can also achieve the same with Flair, if you are more comfortable with that.
>
> †
>
> As for the necessary number of particles, in order to answer this, you want to run a short
> simulation and look at the variance of the results, then scale that variance down with the
> square root of the simulation size, i.e. 100 times more primaries will in average decrease your
> error bar by a factor 10. As a rule of thumb, at the end of the day you donít want to use
> results with relative errors>~30% (this number really depends on particular circumstances), so
> with that you can compute how many particles you need.
>
> †
>
> -Mario
>
> †
>
> From: <owner-fluka-discuss_at_mi.infn.it> on behalf of Masoomeh Yarmohammadi Satri
> <masoomeh.yarmohammadi.satri_at_cern.ch>
> Date: Sunday, January 8, 2017 at 1:01 AM
> To: fluka-discuss <fluka-discuss_at_fluka.org>
> Subject: [fluka-discuss]: DPMJET link
>
> †
>
> Dear All,
>
> I want to exposed a target made of Bone to a 250MeV/nmu (nuclear mass unit) CARBON beam. Then I
> want to look the DoseEQ data at three different distances.
>
> Could you please let me know how can I produce the data related to this simulation at the three
> position. If I need to do this run with DPMJET link? Could you please let me know how I make
> this link and how many particles is appropriate for doing this run? I can merge and plot data
> the same as before that I don't work with this link in proton of electron beams?
>
> The file is attached†
>
> Regards,
> Masoomeh
>
>
>

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Received on Mon Jan 23 2017 - 11:07:35 CET

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