Help on a simulation: deuteron beam on a beryllium target (14 MeV) and He-3 on a beryllium target (36 MeV)

From: Josselin Morand (lisarius2@yahoo.fr)
Date: Tue Jun 21 2005 - 16:09:24 CEST

  • Next message: Gabriel Sawakuchi: "EVENTYPE - DPMJET"

    Dear fluka users

    I want to simulate a deuterons beam on a beryllium
    target and a He-3 on a beryllium target. I created a
    .inp file and a .pemf file but the results are the
    same: nothing but ionization (although we know we have
    in practice many neutrons from deuterons break-up).
    Moreover, I successfully managed to simulate a protons
    beam on the
    same beryllium target.
    My questions are:

    1-can FLUKA simulate a deuteron and a He-3 beam?
    2-Why do I have no neutron? Did I forget anything in
    my
    input file? Is there a special cross section database
    for this case?
    3-Why don't we have any photons on the output file?

    Best regards
    Josselin Morand

    My input file for the He-3 (I use the same for
    deuteron, with a different energy):

    TITLE
                           Simulation cylindre Be fini
    *234567890123456789X123456789X123456789X123456789012345678901234567890123456789
    DEFAULTS
                   HADROTHE
    EVENTYPE 2.0
                   DPMJET
    BEAM -0.036 0.0 0.0 0.0
    0.0 1.0 3-HELIUM
    BEAMPOS 0.0 0.0 -0.1
    SCORE 201.0 0.0 0.0 0.0
    GEOBEGIN
                   COMBINAT
    *23456789X123456789X
    3 0 Cylindre de Be
    *23456789X123456789X123456789X123456789X123456789X123456789X123456789X12345
    * RPP
    1-5000000.0+5000000.0-5000000.0+5000000.0-5000000.0+5000000.0
    * RPP 2-1000000.0+1000000.0-1000000.0+1000000.0
    -100.0+1000000.0
    * RPP 3 -10.0 +10.0 -10.0 +10.0
       0.0 +0.1
      SPH 1 0.0 0.0 0.0 10.0
    0.0 0.0
      SPH 2 0.0 0.0 0.0 5.0
    0.0 0.0
      RCC 3 0.0 0.0 0.0 0.0
    0.0 0.5
                1.75
      END
    *23456789X123456789X123456789X
    *
    * black hole
        1 5 1 -2
    * vacuum
        2 5 2 -3
    * target
        3 5 3
      END
    4188.79 523.60 4.81
    GEOEND
    *
    *PLOTGEOM 0. 1.0 0. 0.
    0. 0.
    *Cylindre
    *-10. 0. 10. 10. 0.
    10.
    * 0. 1. 0. 1. 0.
    0.
    *1.0 1.0
    *........1.........2.........3.........4.........5.........6.........7.........
    ASSIGNMA 5.0 3.0
    ASSIGNMA 1.0 1.
    ASSIGNMA 2.0 2.
    *USRBIN 0.0 208.0 71.0 5.0
    1.0 2.0 toto
    *USRCOLL 1.0 201. 11. 3.0
       1.0 10.
    *USERDUMP 101.0 49.0 6.0 0.
                    cyl3
    *USRBDX 1.0 201.0 11.0 3.0
    2.0 1.0
    *USRBDX 0.03601 0.0 10.0
                       &
    *........1.........2.........3.........4.........5.........6.........7.........
    USRBDX 1. 8. 3.0 2.0
           1. NEUTRON
    USRBDX 0.04 0.0001 100.
                     &
    RESNUCLEI 3.0 11.0 10.0
    2.0 1.0 SIGT
    START 5000.
    STOP

            

            
                    
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