Hello everyone,
I've been trying to track an error in my input file and have been able
to pin point it.
There seems to be a material that FLUKA is seeing with a density of 0.00
assigned to it.
Now, I have neither intentionally set a density of 0.000 to any
material, nor have been able to find a material in my input file with a
typo in the density causing such an error.
All I see in the error file is the following message, without any more
info. on where FLUKA is seeing an 'invalid material density'.
*Invalid density 0.000 for material **
**Abort called from PRCHCK reason INVALID MATERIAL DENSITY Run stopped!**
**STOP INVALID MATERIAL DENSITY*
So I am wondering how to go about tracking and fixing this bug?
Any insights would be appreciated.
Thank you,
Mina
On 2017-07-18 07:11 AM, Eleftherios Skordis wrote:
> Hi Vadim,
>
> without the relevant files (fluka input, routines, etc) I cannot say for certain what it is you are looking at.
> However, the appearance of an ID of -29, as suggested by the manual, hints to a heavy ion.
>
> You can try to extract the Ion information (i.e. Z and A) by looking at the (PAPPROP) common variables, ICHRGE(JTRACK) and IBARCH(JTRACK).
> The JTRACK a variable found in the (TRACKR) common.
>
> If your hypothesis is correct then you should get the details of a carbon recoil.
>
> Kind regards
>
> Lefteris
>
> -----------------------
>
> Eleftherios Skordis
> Dep. EN/STI, CERN
> CH-1211 GENEVA 23
> SWITZERLAND
>
> OFFICE: +41-22-7679541
>
> ________________________________________
> From: owner-fluka-discuss_at_mi.infn.it [owner-fluka-discuss_at_mi.infn.it] on behalf of Talanov Vadim [vadim.talanov_at_psi.ch]
> Sent: 18 July 2017 12:00
> To: FLUKA discussion list
> Subject: [fluka-discuss]: New particle in FLUKA (re)discovered
>
> Dear FLUKA Experts,
>
> While simulating protons onto a CARBON slab and dumping the products
> exiting the slab, it has been found that FLUKA produces the particle
> with the ID of -29 (actually this observation has been already reported
> in fluka-discuss on 29.08.2016 but no light seems to be shed on since then).
>
> The total energy of the particle -29 which is slightly above 11.17 GeV
> allows for guessing that it is simply a carbon recoil.
>
> Does this mean that the recoils are now a) transportable and b) visible
> in mgdraw (seems that they are but it has been always thought that they
> are not)?
>
> Shall the recoils with other negative IDs (below -6 or -12) be expected
> in other cases?
>
> Kind regards,
> Vadim
>
> PS: (TRACKR) comments that for recoils the ID can be outside the allowed
> range but does not give an idea what exactly a user shall be prepared to
> meet in a "regular" dump...
>
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Received on Tue Jul 18 2017 - 22:34:18 CEST