Re: [fluka-discuss]: USRBIN central axis dose not smooth

From: Ryan Brosch <rbrosch_at_asu.edu>
Date: Mon, 27 Nov 2017 02:05:27 -0700

Andrea,

Thank you for your reply. Here is input file. I have also attached a
screenshot with more accurate formatting.

*...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
TITLE
Secondary proton energy deposition in a water phantom
*...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
BEAM -0.2288 PROTON
BEAMPOS 0.0 0.0 0.0
*
GEOBEGIN
COMBNAME
  0 0 Water target inside vacuum
RPP body1 -500000.0 +5000000.0 -500000.0 +500000.0 -500000.0 +500000.0
RPP body2 -100000.0 +1000000.0 -100000.0 +100000.0 -100.0 +100000.0
RPP body3 -200.0 +200.0 -200.0 +200.0 0.0 +200.0
END
* black hole
regBH1 5 +body1 -body2
* vacuum around
regVA2 5 +body2 -body3
* Water target
regWA 5 +body3
END
GEOEND
*...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
*MATERIAL
WATER
*...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
* Water target
ASSIGNMAT WATER regWA
* External Black Hole
ASSIGNMAT BLCKHOLE regBH1
* Vacuum
ASSIGNMAT VACUUM regVA2
*...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
* e+e- and gamma production threshold set at 10 KeV
EMFCUT -0.000010 0.000010 1.0 WATER
PROD-CUT
*MCSTHRESh -1.0 -1.0
IONFLUCT -1.0 -1.0 WATER WATER
*MULSOPT 10001.0
 GLOBHAD
*PHYSICS 0.00000001
PEATHRES
*PHYSICS 0.0 -1.0
 RQMDFLAG
*PHYSICS 0.0
 EVAPORAT
*DISCARD 7 8
*THRESHOLd 1.0 1.0
USRBIN 11.0 228.0 +62.0 10.0 0.0 50.
hadrons
USRBIN 0.0 100.0 0 500.0 &
*...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
RANDOMIZE 1.0
*...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
START 1000000
STOP

On Mon, Nov 27, 2017 at 1:34 AM, Andrea Fontana <andrea.fontana_at_pv.infn.it>
wrote:

> Hello Ryan,
> could you please send your input file, so that we can check it?
>
> Andrea
>
>
> Il 27/11/2017 06:29, Ryan Brosch ha scritto:
>
>> Dear FLUKA experts,
>>
>> I am scoring a monoenergetic, 228.8 MeV proton beam incident on a water
>> tank. I am scoring dose deposited with USRBIN with bin size 1mmx1mm, radial
>> symmetry, thusly
>>
>> USRBIN 11.0 228.0 +62.0 10.0 0.0 50. hadrons
>> USRBIN 0.0 100.0 0 500.0 &
>> *...+....1....+....2....+....3....+....4....+....5....+....6
>> ....+....7....+....8
>>
>> The central axis dose versus depth should be smooth. However, there are
>> discontinuities.
>>
>> Any idea what the problem might be? I don't think these discontinuities
>> are physical.
>>
>> Thanks very much,
>>
>
> --
> ========================================================================
> Dr. Andrea Fontana tel: +39 0382 987991
> Istituto Nazionale fax: +39 0382 423241
> di Fisica Nucleare
> Sezione di Pavia e-mail: andrea.fontana_at_pv.infn.it
> Via Bassi 6 web : www.pv.infn.it/~fontana
> 27100 PAVIA, Italy
> ========================================================================
>
>


-- 
Ryan Brosch
Ph.D Candidate
Department of Physics
Arizona State University



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Proton.PNG
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Received on Mon Nov 27 2017 - 11:17:46 CET

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