Vacuum stopping error message with Alpha's

From: Reddell, Brandon D (brandon.d.reddell@boeing.com)
Date: Wed Jul 26 2006 - 19:53:00 CEST

  • Next message: Reddell, Brandon D: "RE: Vacuum stopping error message with Alpha's"

    Dear FLUKA Forum,

    I am trying to run a spectrum of alpha particles on an aluminum/silicon
    target. The job quickly aborts with the following error message in both
    my .err and .out files:

    1NUMBER OF BEAM NUMBER OF BEAM APPROXIMATE NUMBER
    AVERAGE TIME USED TIME LEFT (RESERVED NUMBER OF STARS
     PARTICLES HANDLED PARTICLES LEFT OF BEAM PARTICLES BY A
    BEAM PARTICLE 80.0 SECONDS CREATED
                                                THAT CAN STILL BE
    FOR PRINTOUT)
                                                HANDLED

     NEXT SEEDS: 0 0 0 0 0 0 12110
    C 0 0
      *** Vacuum stopping: Ij, Pla, Ekin -6 0. 0.

    In the past, this file worked fine with FLUKA2003. The only difference
    now is that I changed the source a little bit, which I don't think is
    the problem. If you change the source type to any other heavy ion the
    job appears to run fine. Below is my input file for reference. Any help
    would be appreciated.

    Sincerely,

    Brandon Reddell

    --------------input file below this line------------
    TITLE
    Alpha particle test run
    DEFAULTS
    PRECISIO
    *23456789 123456789 123456789 123456789 123456789 123456789 123456789
    123456789
    BEAM -100.0
    HEAVYION
    HI-PROPE 2.0 4.0
    BEAMPOS 0.0000 0.0000 -0.0100
    EVENTYPE 2.0
    DPMJET
    DPMJET 0.0
    GEOBEGIN 0.01
    COMBINAT
    *23456789 123456789 123456789 123456789 123456789 123456789 123456789
    123456789
                             standard aluminum slab
      SPH 1 0.0 0.0 0.0 +20000.0
      RPP 2 -5000.0 +5000.0 -5000.0 +5000.0 -5000.0 +5000.0
      XYP 3 0.0
      XYP 4 0.037037
      XYP 5 0.047037
      END
    * Black Hole
        1 6 1 -2
    * Vacuum
        2 6 2 +3
    * Aluminum
        3 6 2 +4 -3
    * Silicon
        4 6 2 +5 -4
    * Vacuum
        5 6 2 -5
      END
    GEOEND
    *23456789 123456789 123456789 123456789 123456789 123456789 123456789
    123456789
    * External Black Hole
    ASSIGNMAT 1.0 1.0
    * Vacuum
    ASSIGNMAT 2.0 2.0
    * Aluminum
    ASSIGNMAT 10.0 3.0
    * Silicon
    ASSIGNMAT 14.0 4.0
    * Vacuum
    ASSIGNMAT 2.0 5.0
    *
    LOW-NEUT 0.0
    EMF
    EMFCUT -1.00E-06 1.0E-07 0.0 10.0 10.0
    PROD-CUT
    EMFCUT -1.00E-06 1.0E-07 0.0 14.0 14.0
    PROD-CUT
    *23456789 123456789 123456789 123456789 123456789 123456789 123456789
    123456789
    SCORE 208.0 201.0 211.0
    * **** Scoring ****
    *23456789 123456789 123456789 123456789 123456789 123456789 123456789
    123456789
    USRBIN 10.0 208.0 -50.0 1000.0 1000.0 0.047037
    thinSi
    USRBIN -1000.0 -1000.0 0.037037 100.0 100.0 20.0 &
    *
    RANDOMIZE 1. 0.1274E+07
    *23456789 123456789 123456789 123456789 123456789 123456789 123456789
    123456789
    SOURCE
    START 0.2700E+07
    STOP

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