Dear Tom,
the problem is due to the presence of the word "compound" in your LOW-MAT
card. It's a character string totally unexpected and meaningless.
By the way, why are you asking for the obsolete 72-group neutron library,
which had a single thermal group and acutally is no longer distributed?
Just remove your LOW-NEUT card (this way you will automatically use the
current 260-group library).
Remove also the material index (WHAT(4)) from all MATERIAL cards, it's
useless and potentially dangerous.
Remove the AUXSCORE card that is pointless (in USRTRACK you are scoring
neutron fluence, so further filtering on NEUTRON makes no sense).
Then, have you any reason to select 16O only instead of natural oxygen
composition? It's what you are doing with the 16. in the respective
MATERIAL card.
Best wishes
Francesco
**************************************************
Francesco Cerutti
CERN-EN/STI
CH-1211 Geneva 23
Switzerland
tel. ++41 22 7678962
fax ++41 22 7668854
On Sun, 14 May 2017, Tom Jonas Janzen (tom.jonas.janzen_at_hs-furtwangen.de) wrote:
> Hello the Fluka community!
>
> My name is Tom Janzen and i'm currently working with FLUKA for my Master
> Thesis at the Hochschule Furtwangen.
>
> My work experience with Fluka is scaled on an intermediate leval but i have
> a problem where i need some help of the community.
> For my master Thesis im need to score the Neutron Fluence of a isotropic
> beam in ten bodys of PMMA with the USRTRCK Card. Also i need to track the
> neutron fluence in the energy spectrum from 3E-12 GeV to 1E-2 GeV.
>
> The aim of this analysis should be results of the USRTRCK, which i can
> transform in a diagram, where i can visualize the Neutron Fluence in every
> PMMA Body at the Energy Range of 3E-12 GeV to 1E-2 GeV. This means, that i
> am trying to track thermal neutrons and visualize the moderation of neutrons
> in the PMMA (moderator material).
>
> Right know i have a Input file which is looking fine to me. I am working
> with the Cards which should track the low energy neutrons and the thermal
> Neutrons as well. Also i took care of the Material cards and implemented in
> my Input file the LOW-MAT card in the way the manual refers to. But when i
> am trying to run the simulation, i get an Error with the following text:
> *** The 5th field compound of the following input card ***
> LOW-MAT HYDROGEN 1. 31. 293. compound
> HYDROG-1
> *** does not contain a valid formatted fortran real number ***
> *** when one is expected ***
> I tryed to fix it by my own beut i have no clue...
>
> I Hope the FLUKA users and experts can help me with this little problem.
> Thank you very much for your help and your time effort. The used Input file
> is written down below.
>
> Best regards,
> Tom Janzen
>
> My Input File:
> 04_Testsimulation_PMMA
> * Set the defaults for precision simulations
> DEFAULTS
> NEUTRONS
> * Define the beam characteristics
> BEAM -0.003 10000.0
> 1.0NEUTRON
> BEAMPOS 0.0 0.0 -5.0
> GEOBEGIN
> COMBNAME
> 3 0
> RCC blkbody 0.0 0.0 -100.0 0.0 0.0 200. 150.
> RCC void 0.0 0.0 -75.0 0.0 0.0 150.0 100.0
> RCC air 0.0 0.0 -10.0 0.0 0.0 20.0 15.0
> RCC PMMA 0.0 0.0 -5.0 0.0 0.0 1.0 10.0
> RCC PMMA2 0.0 0.0 -4.0 0.0 0.0 1.0 10.0
> RCC PMMA3 0.0 0.0 -3.0 0.0 0.0 1.0 10.0
> RCC PMMA4 0.0 0.0 -2.0 0.0 0.0 1.0 10.0
> RCC PMMA5 0.0 0.0 -1.0 0.0 0.0 1.0 10.0
> RCC PMMA6 0.0 0.0 0.0 0.0 0.0 1.0 10.0
> RCC PMMA7 0.0 0.0 1.0 0.0 0.0 1.0 10.0
> RCC PMMA8 0.0 0.0 2.0 0.0 0.0 1.0 10.0
> RCC PMMA9 0.0 0.0 3.0 0.0 0.0 1.0 10.0
> RCC PMMA10 0.0 0.0 4.0 0.0 0.0 1.0 10.0
> END
> * Black hole
> BLKBODY 5 +blkbody -void
> * Void around
> VOID 5 +void-air
> AIR 5 +air -PMMA -PMMA2 -PMMA3 -PMMA4 -PMMA5 -PMMA6 -PMMA7-PMMA8
> -PMMA9 -PMMA10
> PMMA 5 +PMMA
> PMMA2 5 +PMMA2
> PMMA3 5 +PMMA3
> PMMA4 5 +PMMA4
> PMMA5 5 +PMMA5
> PMMA6 5 +PMMA6
> PMMA7 5 +PMMA7
> PMMA8 5 +PMMA8
> PMMA9 5 +PMMA9
> PMMA10 5 +PMMA10
> END
> 9424777.964712388.9813823.0076314.159265314.159265314.159265314.159265
> 314.159265314.159265314.159265314.159265314.159265314.159265
> GEOEND
> * Polymethyl Methacrylate PMMA Photoresist
> * H
> * Chemical H H-C-H
> * Formula | |
> * Polymethyl ----- C - C -----
> * Methacrylate | | H
> * H C - O - C-H
> * C H O || H
> * 5 8 2 O
> *
> * atomic density calculated:
> * H-1
> * H-2
> * C
> * O-16
> MATERIAL 1.19 PMMA
> COMPOUND 0.5332533 HYDROGEN 0.3333333 CARBON 0.1333333 OXYGENPMMA
> MATERIAL 1. 8.99E-05 3.
> 0.0HYDROGEN
> LOW-MAT HYDROGEN 1. 31. 293. compound
> HYDROG-1
> MATERIAL 6. 2.26 6. 0.0CARBON
> LOW-MAT CARBON 6. -2. 293. compound CARBON
> MATERIAL 8. 0.001333 8. 16.OXYGEN
> LOW-MAT OXYGEN 8. 16. 293. OXYGEN
> LOW-NEUT 72. 22. 0.0196 1. 1.
> *LOW-BIAS 20. 73. 0.95 PMMA PMMA 1.
> *SCORE NEUTRON THNEU-EQ
> * ..+....1....+....2....+....3....+....4....+....5....+....6....+....7..
> ASSIGNMA BLCKHOLE BLKBODY
> ASSIGNMA VACUUM VOID
> ASSIGNMA AIR AIR
> ASSIGNMA PMMA PMMA
> ASSIGNMA PMMA PMMA2
> ASSIGNMA PMMA PMMA3
> ASSIGNMA PMMA PMMA4
> ASSIGNMA PMMA PMMA5
> ASSIGNMA PMMA PMMA6
> ASSIGNMA PMMA PMMA7
> ASSIGNMA PMMA PMMA8
> ASSIGNMA PMMA PMMA9
> ASSIGNMA PMMA PMMA10
> AUXSCORE USRTRACK NEUTRON detect1 detect20 AMB74
> USRTRACK 1. NEUTRON -50. PMMA314.159265
> 10.detect1
> USRTRACK 1E-11 3E-12 &
> USRTRACK 1. NEUTRON -50. PMMA314.159265
> 10.detect2
> USRTRACK 3E-11 1E-11 &
> USRTRACK 1. NEUTRON -50. PMMA314.159265
> 10.detect3
> USRTRACK 1E-10 3E-11 &
> USRTRACK 1. NEUTRON -50. PMMA314.159265
> 10.detect4
> USRTRACK 3E-10 1E-10 &
> USRTRACK 1. NEUTRON -50. PMMA314.159265
> 10.detect5
> USRTRACK 1E-9 3E-10 &
> USRTRACK 1. NEUTRON -50. PMMA314.159265
> 10.detect6
> USRTRACK 3E-9 1E-9 &
> USRTRACK 1. NEUTRON -50. PMMA314.159265
> 10.detect7
> USRTRACK 1E-8 3E-9 &
> USRTRACK 1. NEUTRON -50. PMMA314.159265
> 10.detect8
> USRTRACK 3E-8 1E-8 &
> USRTRACK 1. NEUTRON -50. PMMA314.159265
> 10.detect9
> USRTRACK 1E-7 3E-8 &
> USRTRACK 1. NEUTRON -50. PMMA314.159265
> 10.detect10
> USRTRACK 3E-7 1E-7 &
> USRTRACK 1. NEUTRON -50. PMMA314.159265
> 10.detect11
> USRTRACK 1E-6 3E-7 &
> USRTRACK 1. NEUTRON -50. PMMA314.159265
> 10.detect12
> USRTRACK 3E-6 1E-6 &
> USRTRACK 1. NEUTRON -50. PMMA314.159265
> 10.detect13
> USRTRACK 1E-5 3E-6 &
> USRTRACK 1. NEUTRON -50. PMMA314.159265
> 10.detect14
> USRTRACK 3E-5 1E-5 &
> USRTRACK 1. NEUTRON -50. PMMA314.159265
> 10.detect15
> USRTRACK 1E-4 3E-5 &
> USRTRACK 1. NEUTRON -50. PMMA314.159265
> 10.detect16
> USRTRACK 3E-4 1E-4 &
> USRTRACK 1. NEUTRON -50. PMMA314.159265
> 10.detect17
> USRTRACK 1E-3 3E-4 &
> USRTRACK 1. NEUTRON -50. PMMA314.159265
> 10.detect18
> USRTRACK 3E-3 1E-3 &
> USRTRACK 1. NEUTRON -50. PMMA314.159265
> 10.detect19
> USRTRACK 1E-2 3E-3 &
> USRTRACK 1. NEUTRON -50. PMMA314.159265
> 10.detect20
> USRTRACK 1E-2 1E-11 &
> * Neutron fluence scoring
> AUXSCORE USRTRACK NEUTRON detect1 detect20 AMB74
> USRBIN 10. NEUTRON -70. 100. 100.
> 100.Neu-Flu
> USRBIN -100. -100. -100. 200. 200. 240. &
> * Set the random number seed
> RANDOMIZ 1.0
> * Set the number of primary histories to be simulated in the run
> START 1000000.
> STOP
>
>
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Received on Sun May 14 2017 - 19:53:39 CEST