Geometries

From: Flemming Videbaek (videbaek@sgs1.hirg.bnl.goV)
Date: Thu Aug 16 2001 - 22:38:30 EDT

  • Next message: Christian Holm Christensen: "Re: BRAT-2-0-27"

    Let me add my  5 cents (44 oere) worth on geometry.
    There seem to be an obcession both by Rene and now by Christian to use a
    geant like geometry description - with
    geant like mother/daugther volumes, materials etc.
    This has very little to do with the geometry that is needed to do particle
    tracking, hit matching and even event displays.
    Speaking from a long experience with geant except for very simple and
    unrealistic detectors
    that description is way to convoluted for the first and primary purpose.
    This is the main reason for a much simpler dependence of the active areas of
    detectors being described relative to just a or two-level one-level up
    description of most of the brahms detectors, that Kris has implemented very
    recently, and which I trust will do the task for us.
    
    Flemming
    
    ------------------------------------------------------
    Flemming Videbaek
    Physics Department
    Brookhaven National Laboratory
    
    tlf: 631-344-4106
    fax 631-344-1334
    e-mail: videbaek@bnl.gov
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