About Induced Radioactivity in electron linear accelerator

From: wuzhen (wu_zhen01@mails.tsinghua.edu.cn)
Date: Wed Jun 11 2003 - 05:18:09 CEST

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    Dear fluka user,
        Recently, I'm researching the induced radioactivity in the electron linear accelerators which energy is about 10~20MeV.
    I want to use FLUKA to do some caculation about induced radioactivity. I have found some results caculated by FLUKA from some paper got from Internet. But I found these results are in very high energy(several hundred MeV or GeV). And It seems I can't get the accurate result in my example. My result using the RESNUCLE is always zero. Would you mind provide some examples or some papers in this aspect? By the way, can you help me check my input file? Thanks a lot!


    Zhen Wu,
    Jun 10, 2003

    TITLE
     Electron beam hit tungsten target
    DEFAULTS NEW-DEFA
    *---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----*
    BEAM -15.0E-3 0.0 0.0 0.0 0.0 1.0ELECTRON
    BEAMPOS 0.0 0.0 -1.0
    *---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----*
    GEOBEGIN 0.0 COMBINAT
                        tungsten target/vacuum sphere/Blackhole Box
      RPP 1 -10.0 10.0 -10.0 10.0 0.0 0.5
      SPH 2 0.0 0.0 0.0 15.0
      SPH 3 0.0 0.0 0.0 16.0
      END
    *-reg-----or-----or-----or-----or-----or-----or-----or-----or-----or-----
      BL1 5 +3 -2
      VA2 5 +2 -1
      TU3 5 +1
      END
    *---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----*
    GEOEND
    *---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----*
    MATERIAL 74.0 184.0 19.3 23.0 0.0 0.0TUNGSTEN
    *---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----*
    ASSIGNMA 1.0 1.0
    ASSIGNMA 2.0 2.0
    ASSIGNMA 23.0 3.0
    *---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----*
    PHOTONUC 1111. 23.0
    *---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----*
    OUTLEVEL 1.0 7.0
    *---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----*
    PHYSICS 2.0 EVAPORATION
    *---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----*
    RESNUCLE 3.0 48.0 74.0 45.0 3.0 1.0TUNGSTEN
    USRBDX 1.0 8.0 49.0 2.0 1.0 1.0Neutrons
    USRBDX 2.0E-2 0.0 100.0 &
    *---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----*
    RANDOMIZ 1.0
    START 1.0E+5 9999999.
    STOP

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