Modelling kerma with FLUKA

From: Burge, F \(Frances\) (frances.burge@diamond.ac.uk)
Date: Mon Sep 05 2005 - 16:53:22 CEST

  • Next message: Alberto Fasso': "Re: Modelling kerma with FLUKA"

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    Dear FLUKA users,
    =20
      I am a relatively new user of FLUKA and am attempting to reproduce the
    results obtained in a paper. The authors used EGS4 to model doses in an
    ICRU4 detector, from a 6GeV electron beam which strikes a copper
    absorber, behind which the detector is located. The paper is
    'Calculation of electron-photon doses behind beam absorbers at high
    energy electron accelerators' by Dinter, Pang and Tesch, published in
    Rad. Prot. Dosim. Vol 28 No.3 (1989).
    The authors calculate both dose and a quantity referred to as 'photon
    kerma' in the report. Whilst I have been able to obtain good results for
    dose using FLUKA's SCORE command with generalised particle type 211
    (e+,e- and photons), I am not sure how I would calculate the photon
    kerma (in terms of what estimators to use, how to identify only the
    particles from primary interactions, etc). Can anyone suggest how this
    might be done?
    =20
    Many thanks,
    =20
    Frances Burge
    =20
    Health Physicist
    01235 778269
    Diamond Light Source Ltd.
    Rutherford Appleton Laboratory
    Chilton
    Didcot
    OX11 0QX
    =20

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    <DIV><FONT face=3DArial size=3D2><SPAN class=3D544483112-05092005>Dear =
    FLUKA=20
    users,</SPAN></FONT></DIV>
    <DIV><FONT face=3DArial size=3D2><SPAN=20
    class=3D544483112-05092005></SPAN></FONT>&nbsp;</DIV>
    <DIV><FONT face=3DArial size=3D2><SPAN class=3D544483112-05092005>&nbsp; =
    I am a=20
    relatively new user of FLUKA and am attempting to reproduce the results =
    obtained=20
    in a paper. The authors&nbsp;used EGS4 to model doses in an ICRU4 =
    detector, from=20
    a 6GeV electron beam which strikes a copper absorber, behind which the =
    detector=20
    is located. The paper is 'Calculation of electron-photon doses behind =
    beam=20
    absorbers at high energy electron accelerators' by Dinter, Pang and =
    Tesch,=20
    published in Rad. Prot. Dosim. Vol 28 No.3 (1989).</SPAN></FONT></DIV>
    <DIV><FONT face=3DArial size=3D2><SPAN class=3D544483112-05092005>The =
    authors=20
    calculate both dose and a quantity referred to as 'photon kerma' in the =
    report.=20
    Whilst I have been able to obtain good results for dose using FLUKA's =
    SCORE=20
    command with generalised particle type 211 (e+,e- and photons), I am not =
    sure=20
    how I would calculate the photon kerma (in terms of what estimators to =
    use, how=20
    to identify only the particles from primary interactions,&nbsp;etc). Can =
    anyone=20
    suggest how this&nbsp;might be done?</SPAN></FONT></DIV>
    <DIV><FONT face=3DArial size=3D2><SPAN=20
    class=3D544483112-05092005></SPAN></FONT>&nbsp;</DIV>
    <DIV><FONT face=3DArial size=3D2><SPAN class=3D544483112-05092005>Many=20
    thanks,</SPAN></FONT></DIV>
    <DIV><FONT face=3DArial size=3D2><SPAN=20
    class=3D544483112-05092005></SPAN></FONT>&nbsp;</DIV>
    <DIV><FONT face=3DArial size=3D2><SPAN class=3D544483112-05092005>
    <DIV align=3Dleft><FONT face=3DArial size=3D2>Frances Burge</FONT></DIV>
    <DIV align=3Dleft>&nbsp;</DIV>
    <DIV align=3Dleft><FONT face=3DArial size=3D2>Health =
    Physicist</FONT></DIV>
    <DIV align=3Dleft><FONT face=3DArial size=3D2>01235 778269</FONT></DIV>
    <DIV align=3Dleft><FONT face=3DArial size=3D2>Diamond Light Source =
    Ltd.</FONT></DIV>
    <DIV align=3Dleft><FONT face=3DArial size=3D2>Rutherford Appleton=20
    Laboratory</FONT></DIV>
    <DIV align=3Dleft><FONT face=3DArial size=3D2>Chilton</FONT></DIV>
    <DIV align=3Dleft><FONT face=3DArial size=3D2>Didcot</FONT></DIV>
    <DIV align=3Dleft><FONT face=3DArial size=3D2>OX11 0QX</FONT></DIV>
    <DIV align=3Dleft><FONT face=3DArial=20
    size=3D2></FONT>&nbsp;</DIV></SPAN></FONT></DIV></BODY></HTML>

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