Dear Fluka users
a new respin of Fluka2020.0, fluka2020.0.7, is available on the web site
at
http://www.fluka.org.
This respin fixes the following issues:
- a problem with very high energy (> LHC cms energy) Electro Magnetic
Dissociation events which could have resulted in (almost) infinite loops
- a rare problem for neutrons around 21 MeV in carbon
- an issue wiht 6-Li/nat-Li groupwise cross sections which are
systematically ill-processed by all versions of Njoy, 2016 included
The respin contains also several enhancements/additions in the neutron
cross section library:
- Phosphorus, Vanadium, Manganese, Cobalt, Nickel, Copper, Zirconium
(including all individual Zr isotopes present in the library),
230-Th, and 232-Th are now all processed out of the latest Endf/b-viiir0
evaluation. In all cases the latest version of Njoy2016 has been used.
- Neon, Molybdenum (including all individual Mo isotopes present in the
library), Tungsten are now processed out of Tendl-19, again using
Njoy2016 (previous versions of Njoy are uncapable of processing new
formats for the resonance region, present in many recent evaluation,
eg 63-Cu and 65-Cu).
- All Iron isotopes, which were already from Endf/b-viiir0, have been
reprocessed with Njoy2016
- 56-Fe infinitely diluted and self-shielded is available, besides
natural Iron.
- Manganese, Cobalt, and Nickel are available also self-shielded.
- 232-Th and 239-Pu are available also fully self-shielded.
- Iron and Nickel are also available from the older Endf/b-viir1
evaluation. Endf/b-viiir0 and Endf/b-viir1 differ quite a bit above
5-10 MeV which will likely impact some calculations. Given that
the Endf/b-viiir0 Fe and Ni evaluations are now model-driven
and thoroughly cross-checked mostly at reactor energies it is
unclear how much the significant differences seen in the neutron
transmission through thick Iron/Nickel slabs above 5-10 MeV are
fully justified.
- 6-Li processing, which is buggy at low energies versus partial
channels with all versions of Njoy, has been fixed by hand.
As usual assistance will be provided only for the latest respin.
Have fun and stay safe!
The FLUKA developers
Paola Sala
INFN Milano
tel. Milano +39-0250317374
tel. CERN +41-227679148
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Received on Mon Mar 01 2021 - 12:02:35 CET