Dear Christopher
The issue you found is occurring when one of the 238U-W interactions
results in a number of fragments (mostly light ones, d, alphas etc)
larger than the presently set maximum in Fluka. The related dimension
has been increased to avoid future occurrences of the same problem, and
fix will appear soon in a new respin. As soon as the announcement will
appear, please download it and you should no longer experience this
issue.
Ciao
Alfredo
On 2024-04-29 12:16, Schroeck Christopher wrote:
> Dear FLUKA development team,
>
> dear FLUKA users,
>
> we encoutered an undocumented error, when running a simulation based
> on a simplified model of our heavy ion irradiation experiments, here
> at GSI Helmholtz Center in Darmstadt. Our simulations are based on
> FLUKA 2023 version 3.3, which is the most recently installed version
> on our cluster. We would be very grateful if you could have a look at
> the problem and help us figuring out the solution.
>
> Please find attached two input files as minimal examples that describe
> our problem. In both cases, there is a heavy ion beam collimated by a
> block of solid metal. In one case the material is titanium (Ti), in
> the other case tungsten carbide (WC). While we are not facing any
> issues in case of Ti, many simulation runs are aborted in case of WC.
> Exemplarily, we have provided the corresponding .err and .out file of
> such an aborted simulation. The error says:
> "Abort called from EVEVAP reason MXHEAV TOO SMALL!! Run stopped! STOP
> MXHEAV TOO SMALL!! "
>
> We also observed, that the more primaries are set, the more simulation
> runs are aborted. In this case, 90 jobs out of 200 were aborted.
> Similar issues were observed in other cases, where other heavy target
> materials like gold were used.
>
> Is there something we have overlooked? We are grateful for any advice.
>
> With best regards
>
> Leon and Christopher
>
> --
> Christopher Schröck
> Doktorand / PhD Researcher
> Materialforschung / Materials Research Group
>
> Phone / Telefon: +49 6159 71 1896
> Email: c.schroeck_at_gsi.de
>
> Room: C27.2.018
>
> GSI Helmholtzzentrum für Schwerionenforschung GmbH
> Planckstraße 1
> 64291 Darmstadt
> Germany
> www.gsi.de [1]
>
> Commercial Register / Handelsregister:
> Amtsgericht Darmstadt, HRB 1528
> Managing Directors / Geschäftsführung:
> Professor Dr. Paolo Giubellino, Jörg Blaurock
> Chairman of the GSI Supervisory Board / Vorsitzender des
> GSI-Aufsichtsrats:
> Ministerialdirigent Dr. Volkmar Dietz
>
> -------------------------
>
> Von: Schroeck Christopher
> Gesendet: Montag, 22. April 2024 17:41
> An: fluka-discuss_at_fluka.org; Kirsch, Leon; Kozlova, Ekaterina Dr.
> Betreff: error: mheav too small - heavy ions on heavy target
>
> Dear FLUKA development team,
>
> we are two PhD researchers at GSI Helmholtz Center in Darmstadt, that
> are using your code to optimize our experimental setups.
> Unfortunately, we are encountering an undocumented error. These were
> tested using FLUKA 2023 version 3.3, which is the most recently
> installed version on our cluster.
>
> We would be very grateful if you could have a look at the problem and
> help us figuring out the solution.
>
> Please find attached two input files as minimal examples that describe
> our problem. In both cases, there is a heavy ion beam collimated by a
> block solid metal. In one case the material is titanium (Ti), in the
> other case tungsten carbide (WC). While we are not facing any issues
> in case of Ti, many simulation runs are aborted in case of WC.
> Exemplarily, we have provided the corresponding .err and .out file of
> such an aborted simulation. The error says:
> "Abort called from EVEVAP reason MXHEAV TOO SMALL!! Run stopped! STOP
> MXHEAV TOO SMALL!! "
>
> We also observed, that the more primaries are set, the more simulation
> runs are aborted. In this case, 90 jobs out of 200 were aborted.
> Similar issues were observed in other cases, where heavy target
> materials like gold were used.
>
> Is there something we have overlooked? We are grateful for any advice.
>
> With best regards
>
> Leon and Christopher
>
> --
> Christopher Schröck
> PhD Researcher / Doktorand
> Materials Research / Materialforschung
>
> Phone: +49 6159 71 1896
> Room: C27.2.018
> c.schroeck_at_gsi.de
>
> GSI Helmholtzzentrum für Schwerionenforschung GmbH
> Planckstraße 1, 64291 Darmstadt, Germany, www.gsi.de
>
> Commercial Register / Handelsregister: Amtsgericht Darmstadt, HRB 1528
> Managing Directors / Geschäftsführung:
> Professor Dr. Paolo Giubellino, Jörg Blaurock
> Chairman of the GSI Supervisory Board / Vorsitzender des
> GSI-Aufsichtsrats:
> Ministerialdirigent Dr. Volkmar Dietz
>
>
>
> Links:
> ------
> [1] http://www.gsi.de
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Received on Fri May 03 2024 - 13:51:46 CEST